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凯发k8娱乐app下载:用VB实现DES加解密算法

05月07日作者:黑曼巴


(一)--定义

'DES加解密算法实现 vb版 v1.0

'

'作者: agamem

'日期: 2003年08月27日

'

'

'

Option Explicit

Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (Dest凯发k8娱乐app下载ination As Any, Source As Any, ByVal Length As Long)

'置换表

Private IP(63)As Byte'IP置换码

Private IP_1(63)As Byte'IP-1置换码

Private E(47)As Byte'E膨胀码

Private P(31)As Byte'P变换码

Private S1(3, 15)As Byte'S盒1

Private S2(3, 15)As Byte'S盒2

Private S3(3, 15)As Byte'S盒3

Private S4(3, 15)As Byte'S盒4

Private S5(3, 15)As Byte'S盒5

Private S6(3, 15)As Byte'S盒6

Private S7(3, 15)As Byte'S盒7

Private S8(3, 15)As Byte'S盒8

Private PC_1(55)As Byte

Private PC_2(47)As Byte

Private Lsi(16)As Byte'轮回左移位

Private Sub Class_Initialize()

Dim i As Integer

IP(0) = 57' 58

IP(1) = 49' 50

IP(2) = 41' 42

IP(3) = 33' 34

IP(4) = 25' 26

IP(5) = 17' 18

IP(6) = 9' 10

IP(7) = 1' 2

IP(8) = 59' 60

IP(9) = 51' 52

IP(10) = 43' 44

IP(11) = 35' 36

IP(12) = 27' 28

IP(13) = 19' 20

IP(14) = 11' 12

IP(15) = 3' 4

IP(16) = 61' 62

IP(17) = 53' 54

IP(18) = 45' 46

IP(19) = 37' 38

IP(20) = 29' 30

IP(21) = 21' 22

IP(22) = 13' 14

IP(23) = 5' 6

IP(24) = 63' 64

IP(25) = 55' 56

IP(26) = 47' 48

IP(27) = 39' 40

IP(28) = 31' 32

IP(29) = 23' 24

IP(30) = 15' 16

IP(31) = 7' 8

IP(32) = 56' 57

IP(33) = 48' 49

IP(34) = 40' 41

IP(35) = 32' 33

IP(36) = 24' 25

IP(37) = 16' 17

IP(38) = 8' 9

IP(39) = 0' 1

IP(40) = 58' 59

IP(41) = 50' 51

IP(42) = 42' 43

IP(43) = 34' 35

IP(44) = 26' 27

IP(45) = 18' 19

IP(46) = 10' 11

IP(47) = 2' 3

IP(48) = 60' 61

IP(49) = 52' 53

IP(50) = 44' 45

IP(51) = 36' 37

IP(52) = 28' 29

IP(53) = 20' 21

IP(54) = 12' 13

IP(55) = 4' 5

IP(56) = 62' 63

IP(57) = 54' 55

IP(58) = 46' 47

IP(59) = 38' 39

IP(60) = 30' 31

IP(61) = 22' 23

IP(62) = 14' 15

IP(63) = 6' 7

IP_1(0) = 39' 40

IP_1(1) = 7' 8

IP_1(2) = 47' 48

IP_1(3) = 15' 16

IP_1(4) = 55' 56

IP_1(5) = 23' 24

IP_1(6) = 63' 64

IP_1(7) = 31' 32

IP_1(8) = 38' 39

IP_1(9) = 6' 7

IP_1(10) = 46' 47

IP_1(11) = 14' 15

IP_1(12) = 54' 55

IP_1(13) = 22' 23

IP_1(14) = 62' 63

IP_1(15) = 30' 31

IP_1(16) = 37' 38

IP_1(17) = 5' 6

IP_1(18) = 45' 46

IP_1(19) = 13' 14

IP_1(20) = 53' 54

IP_1(21) = 21' 22

IP_1(22) = 61' 62

IP_1(23) = 29' 30

IP_1(24) = 36' 37

IP_1(25) = 4' 5

IP_1(26) = 44' 45

IP_1(27) = 12' 13

IP_1(28) = 52' 53

IP_1(29) = 20' 21

IP_1(30) = 60' 61

IP_1(31) = 28' 29

IP_1(32) = 35' 36

IP_1(33) = 3' 4

IP_1(34) = 43' 44

IP_1(35) = 11' 12

IP_1(36) = 51' 52

IP_1(37) = 19' 20

IP_1(38) = 59' 60

IP_1(39) = 27' 28

IP_1(40) = 34' 35

IP_1(41) = 2' 3

IP_1(42) = 42' 43

IP_1(43) = 10' 11

IP_1(44) = 50' 51

IP_1(45) = 18' 19

IP_1(46) = 58' 59

IP_1(47) = 26' 27

IP_1(48) = 33' 34

IP_1(49) = 1' 2

IP_1(50) = 41' 42

IP_1(51) = 9' 10

IP_1(52) = 49' 50

IP_1(53) = 17' 18

IP_1(54) = 57' 58

IP_1(55) = 25' 26

IP_1(56) = 32' 33

IP_1(57) = 0' 1

IP_1(58) = 40' 41

IP_1(59) = 8' 9

IP_1(60) = 48' 49

IP_1(61) = 16' 17

IP_1(62) = 56' 57

IP_1(63) = 24' 25

E(0) = 31

For i = 1 To 5

E(i) = i - 1

Next

For i = 6 To 11

E(i) = i - 3

Next

For i = 12 To 17

E(i) = i - 5

Next

For i = 18 To 23

E(i) = i - 7

Next

For i = 24 To 29

E(i) = i - 9

Next

For i = 30 To 35

E(i) = i - 11

Next

For i = 36 To 41

E(i) = i - 13

Next

For i = 42 To 46

E(i) = i - 15

Next

E(47) = 30

P(0) = 15' 16

P(1) = 6' 7

P(2) = 19' 20

P(3) = 20' 21

P(4) = 28' 29

P(5) = 11' 12

P(6) = 27' 28

P(7) = 16' 17

P(8) = 0' 1

P(9) = 14' 15

P(10) = 22' 23

P(11) = 25' 26

P(12) = 4' 5

P(13) = 17' 18

P(14) = 30' 31

P(15) = 9' 10

P(16) = 1' 2

P(17) = 7' 8

P(18) = 23' 24

P(19) = 13' 14

P(20) = 31' 32

P(21) = 26' 27

P(22) = 2' 3

P(23) = 8' 9

P(24) = 18' 19

P(25) = 12' 13

P(26) = 29' 30

P(27) = 5' 6

P(28) = 21' 22

P(29) = 10' 11

P(30) = 3' 4

P(31) = 24' 25

S1(0, 0) = 14

S1(0, 1) = 4

S1(0, 2) = 13

S1(0, 3) = 1

S1(0, 4) = 2

S1(0, 5) = 15

S1(0, 6) = 11

S1(0, 7) = 8

S1(0, 8) = 3

S1(0, 9) = 10

S1(0, 10) = 6

S1(0, 11) = 12

S1(0, 12) = 5

S1(0, 13) = 9

S1(0, 14) = 0

S1(0, 15) = 7

S1(1, 0) = 0

S1(1, 1) = 15

S1(1, 2) = 7

S1(1, 3) = 4

S1(1, 4) = 14

S1(1, 5) = 2

S1(1, 6) = 13

S1(1, 7) = 1

S1(1, 8) = 10

S1(1, 9) = 6

S1(1, 10) = 12

S1(1, 11) = 11

S1(1, 12) = 9

S1(1, 13) = 5

S1(1, 14) = 3

S1(1, 15) = 8

S1(2, 0) = 4

S1(2, 1) = 1

S1(2, 2) = 14

S1(2, 3) = 8

S1(2, 4) = 13

S1(2, 5) = 6

S1(2, 6) = 2

S1(2, 7) = 11

S1(2, 8) = 15

S1(2, 9) = 12

S1(2, 10) = 9

S1(2, 11) = 7

S1(2, 12) = 3

S1(2, 13) = 10

S1(2, 14) = 5

S1(2, 15) = 0

S1(3, 0) = 15

S1(3, 1) = 12

S1(3, 2) = 8

S1(3, 3) = 2

S1(3, 4) = 4

S1(3, 5) = 9

S1(3, 6) = 1

S1(3, 7) = 7

S1(3, 8) = 5

S1(3, 9) = 11

S1(3, 10) = 3

S1(3, 11) = 14

S1(3, 12) = 10

S1(3, 13) = 0

S1(3, 14) = 6

S1(3, 15) = 13

S2(0, 0) = 15

S2(0, 1) = 1

S2(0, 2) = 8

S2(0, 3) = 14

S2(0, 4) = 6

S2(0, 5) = 11

S2(0, 6) = 3

S2(0, 7) = 4

S2(0, 8) = 9

S2(0, 9) = 7

S2(0, 10) = 2

S2(0, 11) = 13

S2(0, 12) = 12

S2(0, 13) = 0

S2(0, 14) = 5

S2(0, 15) = 10

S2(1, 0) = 3

S2(1, 1) = 13

S2(1, 2) = 4

S2(1, 3) = 7

S2(1, 4) = 15

S2(1, 5) = 2

S2(1, 6) = 8

S2(1, 7) = 14

S2(1, 8) = 12

S2(1, 9) = 0

S2(1, 10) = 1

S2(1, 11) = 10

S2(1, 12) = 6

S2(1, 13) = 9

S2(1, 14) = 11

S2(1, 15) = 5

S2(2, 0) = 0

S2(2, 1) = 14

S2(2, 2) = 7

S2(2, 3) = 11

S2(2, 4) = 10

S2(2, 5) = 4

S2(2, 6) = 13

S2(2, 7) = 1

S2(2, 8) = 5

S2(2, 9) = 8

S2(2, 10) = 12

S2(2, 11) = 6

S2(2, 12) = 9

S2(2, 13) = 3

S2(2, 14) = 2

S2(2, 15) = 15

S2(3, 0) = 13

S2(3, 1) = 8

S2(3, 2) = 10

S2(3, 3) = 1

S2(3, 4) = 3

S2(3, 5) = 15

S2(3, 6) = 4

S2(3, 7) = 2

S2(3, 8) = 11

S2(3, 9) = 6

S2(3, 10) = 7

S2(3, 11) = 12

S2(3, 12) = 0

S2(3, 13) = 5

S2(3, 14) = 14

S2(3, 15) = 9

S3(0, 0) = 10

S3(0, 1) = 0

S3(0, 2) = 9

S3(0, 3) = 14

S3(0, 4) = 6

S3(0, 5) = 3

S3(0, 6) = 15

S3(0, 7) = 5

S3(0, 8) = 1

S3(0, 9) = 13

S3(0, 10) = 12

S3(0, 11) = 7

S3(0, 12) = 11

S3(0, 13) = 4

S3(0, 14) = 2

S3(0, 15) = 8

S3(1, 0) = 13

S3(1, 1) = 7

S3(1, 2) = 0

S3(1, 3) = 9

S3(1, 4) = 3

S3(1, 5) = 4

S3(1, 6) = 6

S3(1, 7) = 10

S3(1, 8) = 2

S3(1, 9) = 8

S3(1, 10) = 5

S3(1, 11) = 14

S3(1, 12) = 12

S3(1, 13) = 11

S3(1, 14) = 15

S3(1, 15) = 1

S3(2, 0) = 13

S3(2, 1) = 6

S3(2, 2) = 4

S3(2, 3) = 9

S3(2, 4) = 8

S3(2, 5) = 15

S3(2, 6) = 3

S3(2, 7) = 0

S3(2, 8) = 11

S3(2, 9) = 1

S3(2, 10) = 2

S3(2, 11) = 12

S3(2, 12) = 5

S3(2, 13) = 10

S3(2, 14) = 14

S3(2, 15) = 7

S3(3, 0) = 1

S3(3, 1) = 10

S3(3, 2) = 13

S3(3, 3) = 0

S3(3, 4) = 6

S3(3, 5) = 9

S3(3, 6) = 8

S3(3, 7) = 7

S3(3, 8) = 4

S3(3, 9) = 15

S3(3, 10) = 14

S3(3, 11) = 3

S3(3, 12) = 11

S3(3, 13) = 5

S3(3, 14) = 2

S3(3, 15) = 12

S4(0, 0) = 7

S4(0, 1) = 13

S4(0, 2) = 14

S4(0, 3) = 3

S4(0, 4) = 0

S4(0, 5) = 6

S4(0, 6) = 9

S4(0, 7) = 10

S4(0, 8) = 1

S4(0, 9) = 2

S4(0, 10) = 8

S4(0, 11) = 5

S4(0, 12) = 11

S4(0, 13) = 12

S4(0, 14) = 4

S4(0, 15) = 15

S4(1, 0) = 13

S4(1, 1) = 8

S4(1, 2) = 11

S4(1, 3) = 5

S4(1, 4) = 6

S4(1, 5) = 15

S4(1, 6) = 0

S4(1, 7) = 3

S4(1, 8) = 4

S4(1, 9) = 7

S4(1, 10) = 2

S4(1, 11) = 12

S4(1, 12) = 1

S4(1, 13) = 10

S4(1, 14) = 14

S4(1, 15) = 9

S4(2, 0) = 10

S4(2, 1) = 6

S4(2, 2) = 9

S4(2, 3) = 0

S4(2, 4) = 12

S4(2, 5) = 11

S4(2, 6) = 7

S4(2, 7) = 13

S4(2, 8) = 15

S4(2, 9) = 1

S4(2, 10) = 3

S4(2, 11) = 14

S4(2, 12) = 5

S4(2, 13) = 2

S4(2, 14) = 8

S4(2, 15) = 4

S4(3, 0) = 3

S4(3, 1) = 15

S4(3, 2) = 0

S4(3, 3) = 6

S4(3, 4) = 10

S4(3, 5) = 1

S4(3, 6) = 13

S4(3, 7) = 8

S4(3, 8) = 9

S4(3, 9) = 4

S4(3, 10) = 5

S4(3, 11) = 11

S4(3, 12) = 12

S4(3, 13) = 7

S4(3, 14) = 2

S4(3, 15) = 14

S5(0, 0) = 2

S5(0, 1) = 12

S5(0, 2) = 4

S5(0, 3) = 1

S5(0, 4) = 7

S5(0, 5) = 10

S5(0, 6) = 11

S5(0, 7) = 6

S5(0, 8) = 8

S5(0, 9) = 5

S5(0, 10) = 3

S5(0, 11) = 15

S5(0, 12) = 13

S5(0, 13) = 0

S5(0, 14) = 14

S5(0, 15) = 9

S5(1, 0) = 14

S5(1, 1) = 11

S5(1, 2) = 2

S5(1, 3) = 12

S5(1, 4) = 4

S5(1, 5) = 7

S5(1, 6) = 13

S5(1, 7) = 1

S5(1, 8) = 5

S5(1, 9) = 0

S5(1, 10) = 15

S5(1, 11) = 10

S5(1, 12) = 3

S5(1, 13) = 9

S5(1, 14) = 8

S5(1, 15) = 6

S5(2, 0) = 4

S5(2, 1) = 2

S5(2, 2) = 1

S5(2, 3) = 11

S5(2, 4) = 10

S5(2, 5) = 13

S5(2, 6) = 7

S5(2, 7) = 8

S5(2, 8) = 15

S5(2, 9) = 9

S5(2, 10) = 12

S5(2, 11) = 5

S5(2, 12) = 6

S5(2, 13) = 3

S5(2, 14) = 0

S5(2, 15) = 14

S5(3, 0) = 11

S5(3, 1) = 8

S5(3, 2) = 12

S5(3, 3) = 7

S5(3, 4) = 1

S5(3, 5) = 14

S5(3, 6) = 2

S5(3, 7) = 13

S5(3, 8) = 6

S5(3, 9) = 15

S5(3, 10) = 0

S5(3, 11) = 9

S5(3, 12) = 10

S5(3, 13) = 4

S5(3, 14) = 5

S5(3, 15) = 3

S6(0, 0) = 12

S6(0, 1) = 1

S6(0, 2) = 10

S6(0, 3) = 15

S6(0, 4) = 9

S6(0, 5) = 2

S6(0, 6) = 6

S6(0, 7) = 8

S6(0, 8) = 0

S6(0, 9) = 13

S6(0, 10) = 3

S6(0, 11) = 4

S6(0, 12) = 14

S6(0, 13) = 7

S6(0, 14) = 5

S6(0, 15) = 11

S6(1, 0) = 10

S6(1, 1) = 15

S6(1, 2) = 4

S6(1, 3) = 2

S6(1, 4) = 7

S6(1, 5) = 12

S6(1, 6) = 9

S6(1, 7) = 5

S6(1, 8) = 6

S6(1, 9) = 1

S6(1, 10) = 13

S6(1, 11) = 14

S6(1, 12) = 0

S6(1, 13) = 11

S6(1, 14) = 3

S6(1, 15) = 8

S6(2, 0) = 9

S6(2, 1) = 14

S6(2, 2) = 15

S6(2, 3) = 5

S6(2, 4) = 2

S6(2, 5) = 8

S6(2, 6) = 12

S6(2, 7) = 3

S6(2, 8) = 7

S6(2, 9) = 0

S6(2, 10) = 4

S6(2, 11) = 10

S6(2, 12) = 1

S6(2, 13) = 13

S6(2, 14) = 11

S6(2, 15) = 6

S6(3, 0) = 4

S6(3, 1) = 3

S6(3, 2) = 2

S6(3, 3) = 12

S6(3, 4) = 9

S6(3, 5) = 5

S6(3, 6) = 15

S6(3, 7) = 10

S6(3, 8) = 11

S6(3, 9) = 14

S6(3, 10) = 1

S6(3, 11) = 7

S6(3, 12) = 6

S6(3, 13) = 0

S6(3, 14) = 8

S6(3, 15) = 13

S7(0, 0) = 4

S7(0, 1) = 11

S7(0, 2) = 2

S7(0, 3) = 14

S7(0, 4) = 15

S7(0, 5) = 0

S7(0, 6) = 8

S7(0, 7) = 13

S7(0, 8) = 3

S7(0, 9) = 12

S7(0, 10) = 9

S7(0, 11) = 7

S7(0, 12) = 5

S7(0, 13) = 10

S7(0, 14) = 6

S7(0, 15) = 1

S7(1, 0) = 13

S7(1, 1) = 0

S7(1, 2) = 11

S7(1, 3) = 7

S7(1, 4) = 4

S7(1, 5) = 9

S7(1, 6) = 1

S7(1, 7) = 10

S7(1, 8) = 14

S7(1, 9) = 3

S7(1, 10) = 5

S7(1, 11) = 12

S7(1, 12) = 2

S7(1, 13) = 15

S7(1, 14) = 8

S7(1, 15) = 6

S7(2, 0) = 1

S7(2, 1) = 4

S7(2, 2) = 11

S7(2, 3) = 13

S7(2, 4) = 12

S7(2, 5) = 3

S7(2, 6) = 7

S7(2, 7) = 14

S7(2, 8) = 10

S7(2, 9) = 15

S7(2, 10) = 6

S7(2, 11) = 8

S7(2, 12) = 0

S7(2, 13) = 5

S7(2, 14) = 9

S7(2, 15) = 2

S7(3, 0) = 6

S7(3, 1) = 11

S7(3, 2) = 13

S7(3, 3) = 8

S7(3, 4) = 1

S7(3, 5) = 4

S7(3, 6) = 10

S7(3, 7) = 7

S7(3, 8) = 9

S7(3, 9) = 5

S7(3, 10) = 0

S7(3, 11) = 15

S7(3, 12) = 14

S7(3, 13) = 2

S7(3, 14) = 3

S7(3, 15) = 12

S8(0, 0) = 13

S8(0, 1) = 2

S8(0, 2) = 8

S8(0, 3) = 4

S8(0, 4) = 6

S8(0, 5) = 15

S8(0, 6) = 11

S8(0, 7) = 1

S8(0, 8) = 10

S8(0, 9) = 9

S8(0, 10) = 3

S8(0, 11) = 14

S8(0, 12) = 5

S8(0, 13) = 0

S8(0, 14) = 12

S8(0, 15) = 7

S8(1, 0) = 1

S8(1, 1) = 15

S8(1, 2) = 13

S8(1, 3) = 8

S8(1, 4) = 10

S8(1, 5) = 3

S8(1, 6) = 7

S8(1, 7) = 4

S8(1, 8) = 12

S8(1, 9) = 5

S8(1, 10) = 6

S8(1, 11) = 11

S8(1, 12) = 0

S8(1, 13) = 14

S8(1, 14) = 9

S8(1, 15) = 2

S8(2, 0) = 7

S8(2, 1) = 11

S8(2, 2) = 4

S8(2, 3) = 1

S8(2, 4) = 9

S8(2, 5) = 12

S8(2, 6) = 14

S8(2, 7) = 2

S8(2, 8) = 0

S8(2, 9) = 6

S8(2, 10) = 10

S8(2, 11) = 13

S8(2, 12) = 15

S8(2, 13) = 3

S8(2, 14) = 5

S8(2, 15) = 8

S8(3, 0) = 2

S8(3, 1) = 1

S8(3, 2) = 14

S8(3, 3) = 7

S8(3, 4) = 4

S8(3, 5) = 10

S8(3, 6) = 8

S8(3, 7) = 13

S8(3, 8) = 15

S8(3, 9) = 12

S8(3, 10) = 9

S8(3, 11) = 0

S8(3, 12) = 3

S8(3, 13) = 5

S8(3, 14) = 6

S8(3, 15) = 11

PC_1(0) = 56' 57

PC_1(1) = 48' 49

PC_1(2) = 40' 41

PC_1(3) = 32' 33

PC_1(4) = 24' 25

PC_1(5) = 16' 17

PC_1(6) = 8' 9

PC_1(7) = 0' 1

PC_1(8) = 57' 58

PC_1(9) = 49' 50

PC_1(10) = 41' 42

PC_1(11) = 33' 34

PC_1(12) = 25' 26

PC_1(13) = 17' 18

PC_1(14) = 9' 10

PC_1(15) = 1' 2

PC_1(16) = 58' 59

PC_1(17) = 50' 51

PC_1(18) = 42' 43

PC_1(19) = 34' 35

PC_1(20) = 26' 27

PC_1(21) = 18' 19

PC_1(22) = 10' 11

PC_1(23) = 2' 3

PC_1(24) = 59' 60

PC_1(25) = 51' 52

PC_1(26) = 43' 44

PC_1(27) = 35' 36

PC_1(28) = 62' 63

PC_1(29) = 54' 55

PC_1(30) = 46' 47

PC_1(31) = 38' 39

PC_1(32) = 30' 31

PC_1(33) = 22' 23

PC_1(34) = 14' 15

PC_1(35) = 6' 7

PC_1(36) = 61' 62

PC_1(37) = 53' 54

PC_1(38) = 45' 46

PC_1(39) = 37' 38

PC_1(40) = 29' 30

PC_1(41) = 21' 22

PC_1(42) = 13' 14

PC_1(43) = 5'凯发k8娱乐app下载 6

PC_1(44) = 60' 61

PC_1(45) = 52' 53

PC_1(46) = 44' 45

PC_1(47) = 36' 37

PC_1(48) = 28' 29

PC_1(49) = 20' 21

PC_1(50) = 12' 13

PC_1(51) = 4' 5

PC_1(52) = 27' 28

PC_1(53) = 19' 20

PC_1(54) = 11' 12

PC_1(55) = 3' 4

PC_2(0) = 13' 14

PC_2(1) = 16' 17

PC_2(2) = 10' 11

PC_2(3) = 23' 24

PC_2(4) = 0' 1

PC_2(5) = 4' 5

PC_2(6) = 2' 3

PC_2(7) = 27' 28

PC_2(8) = 14' 15

PC_2(9) = 5' 6

PC_2(10) = 20' 21

PC_2(11) = 9' 10

PC_2(12) = 22' 23

PC_2(13) = 18' 19

PC_2(14) = 11' 12

PC_2(15) = 3' 4

PC_2(16) = 25' 26

PC_2(17) = 7' 8

PC_2(18) = 15' 16

PC_2(19) = 6' 7

PC_2(20) = 26' 27

PC_2(21) = 19' 20

PC_2(22) = 12' 13

PC_2(23) = 1' 2

PC_2(24) = 40' 41

PC_2(25) = 51' 52

PC_2(26) = 30' 31

PC_2(27) = 36' 37

PC_2(28) = 46' 47

PC_2(29) = 54' 55

PC_2(30) = 29' 30

PC_2(31) = 39' 40

PC_2(32) = 50' 51

PC_2(33) = 44' 45

PC_2(34) = 32' 33

PC_2(35) = 47' 48

PC_2(36) = 43' 44

PC_2(37) = 48' 49

PC_2(38) = 38' 39

PC_2(39) = 55' 56

PC_2(40) = 33' 34

PC_2(41) = 52' 53

PC_2(42) = 45' 46

PC_2(43) = 41' 42

PC_2(44) = 49' 50

PC_2(45) = 35' 36

PC_2(46) = 28' 29

PC_2(47) = 31' 32

Lsi(1) = 1

Lsi(2) = 1

Lsi(3) = 2

Lsi(4) = 2

Lsi(5) = 2

Lsi(6) = 2

Lsi(7) = 2

Lsi(8) = 2

Lsi(9) = 1

Lsi(10) = 2

Lsi(11) = 2

Lsi(12) = 2

Lsi(13) = 2

Lsi(14) = 2

Lsi(15) = 2

Lsi(16) = 1

End Sub

(二)--加密

'sCode待加密字串

'sKey密钥字串(前8位有效)

Public Sub DES_Encode(ByRef sCode() As Byte, ByVal sKey As String, ByRef bReturn() As Byte)

Attribute DES_Encode.VB_Description = "加密 sCode:明文16进制串sKey:密钥文本,前8位有效bReturn:密文16进制串"

Dim tempKey() As Byte'寄放密钥

Dim BinKey(63) As Byte'64位二进制原始密钥

Dim KeyPC_1(55) As Byte'寄放56位密钥

Dim tempCode(7) As Byte'寄放8位原始明文

Dim tempReturn(7) As Byte'寄放8位密文

Dim BinCode(63) As Byte'寄放64位明文

Dim CodeIP(63) As Byte'寄放IP置换结果

Dim CodeE(47) As Byte'E膨胀结果

Dim CodeP(31)As Byte'P变换结果

Dim RetS(47)As Byte'S盒运算32位结果

Dim S(7) As Byte'S盒运算8个结果

Dim CodeS1(5) As Byte: Dim CodeS2(5) As Byte: Dim CodeS3(5) As Byte: Dim CodeS4(5) As Byte

Dim CodeS5(5) As Byte: Dim CodeS6(5) As Byte: Dim CodeS7(5) As Byte: Dim CodeS8(5) As Byte

Dim L0(31) As Byte: Dim R0(31) As Byte

Dim L1(31) As Byte: Dim R1(31) As Byte

Dim L2(31) As Byte: Dim R2(31) As Byte

Dim L3(31) As Byte: Dim R3(31) As Byte

Dim L4(31) As Byte: Dim R4(31) As Byte

Dim L5(31) As Byte: Dim R5(31) As Byte

Dim L6(31) As Byte: Dim R6(31) As Byte

Dim L7(31) As Byte: Dim R7(31) As Byte

Dim L8(31) As Byte: Dim R8(31) As Byte

Dim L9(31) As Byte: Dim R9(31) As Byte

Dim L10(31) As Byte: Dim R10(31) As Byte

Dim L11(31) As Byte: Dim R11(31) As Byte

Dim L12(31) As Byte: Dim R12(31) As Byte

Dim L13(31) As Byte: Dim R13(31) As Byte

Dim L14(31) As Byte: Dim R14(31) As Byte

Dim L15(31) As Byte: Dim R15(31) As Byte

Dim L16(31) As Byte: Dim R16(31) As Byte

Dim C0(27) As Byte: Dim D0(27) As Byte'16个密钥

Dim C1(27) As Byte: Dim D1(27) As Byte

Dim C2(27) As Byte: Dim D2(27) As Byte:

Dim C3(27) As Byte: Dim D3(27) As Byte:

Dim C4(27) As Byte: Dim D4(27) As Byte:

Dim C5(27) As Byte: Dim D5(27) As Byte:

Dim C6(27) As Byte: Dim D6(27) As Byte:

Dim C7(27) As Byte: Dim D7(27) As Byte:

Dim C8(27) As Byte: Dim D8(27) As Byte:

Dim C9(27) As Byte: Dim D9(27) As Byte:

Dim C10(27) As Byte: Dim D10(27) As Byte:

Dim C11(27) As Byte: Dim D11(27) As Byte:

Dim C12(27) As Byte: Dim D12(27) As Byte:

Dim C13(27) As Byte: Dim D13(27) As Byte:

Dim C14(27) As Byte: Dim D14(27) As Byte:

Dim C15(27) As Byte: Dim D15(27) As Byte:

Dim C16(27) As Byte: Dim D16(27) As Byte:

Dim C_D(55) As Byte'Cn,Dn合并后的寄放处

Dim K1(47) As Byte: Dim K2(47) As Byte: Dim K3(47) As Byte: Dim K4(47) As Byte:

Dim K5(47) As Byte: Dim K6(47) As Byte: Dim K7(47) As Byte: Dim K8(47) As Byte:

Dim K9(47) As Byte: Dim K10(47) As Byte: Dim K11(47) As Byte: Dim K12(47) As Byte:

Dim K13(47) As Byte: Dim K14(47) As Byte: Dim K15(47) As Byte: Dim K16(47) As Byte:

Dim i As Integer

Dim j As Integer

'取密钥的前8字节

tempKey = StrConv(sKey, vbFromUnicode)

ReDim Preserve tempKey(7)

For i = 0 To 7

BinKey(i * 8 + 0) = (tempKey(i) And &H80) \ &H80

BinKey(i * 8 + 1) = (tempKey(i) And &H40) \ &H40

BinKey(i * 8 + 2) = (tempKey(i) And &H20) \ &H20

BinKey(i * 8 + 3) = (tempKey(i) And &H10) \ &H10

BinKey(i * 8 + 4) = (tempKey(i) And &H8) \ &H8

BinKey(i * 8 + 5) = (tempKey(i) And &H4) \ &H4

BinKey(i * 8 + 6) = (tempKey(i) And &H2) \ &H2

BinKey(i * 8 + 7) = (tempKey(i) And &H1) \ &H1

Next

'PC_1转换

For i = 0 To 55

KeyPC_1(i) = BinKey(PC_1(i))

Next

'天生C0,D0

For i = 0 To 27

C0(i) = KeyPC_1(i)

D0(i) = KeyPC_1(i + 28)

Next

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'天生C1,D1

For i = 0 To 26

C1(i) = C0(i + Lsi(1))

D1(i) = D0(i + Lsi(1))

Next

C1(27) = C0(0)

D1(27) = D0(0)

'组合C1,D1成C_D

For i = 0 To 27

C_D(i) = C1(i)

C_D(i + 28) = D1(i)

Next

'PC_2转换,天生K1

For i = 0 To 47

K1(i) = C_D(PC_2(i))

Next

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'天生C2,D2

For i = 0 To 26

C2(i) = C1(i + Lsi(2))

D2(i) = D1(i + Lsi(2))

Next

C2(27) = C1(0)

D2(27) = D1(0)

'组合C2,D2成C_D

For i = 0 To 27

C_D(i) = C2(i)

C_D(i + 28) = D2(i)

Next

'PC_2转换,天生K2

For i = 0 To 47

K2(i) = C_D(PC_2(i))

Next

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'天生C3,D3

For i = 0 To 25

C3(i) = C2(i + Lsi(3))

D3(i) = D2(i + Lsi(3))

Next

C3(26) = C2(0)

D3(26) = D2(0)

C3(27) = C2(1)

D3(27) = D2(1)

'组合C3,D3成C_D

For i = 0 To 27

C_D(i) = C3(i)

C_D(i + 28) = D3(i)

Next

'PC_2转换,天生K3

For i = 0 To 47

K3(i) = C_D(PC_2(i))

Next

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'天生C4,D4

For i = 0 To 25

C4(i) = C3(i + Lsi(4))

D4(i) = D3(i + Lsi(4))

Next

C4(26) = C3(0)

D4(26) = D3(0)

C4(27) = C3(1)

D4(27) = D3(1)

'组合C4,D4成C_D

For i = 0 To 27

C_D(i) = C4(i)

C_D(i + 28) = D4(i)

Next

'PC_2转换,天生K4

For i = 0 To 47

K4(i) = C_D(PC_2(i))

Next

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'天生C5,D5

For i = 0 To 25

C5(i) = C4(i + Lsi(5))

D5(i) = D4(i + Lsi(5))

Next

C5(26) = C4(0)

D5(26) = D4(0)

C5(27) = C4(1)

D5(27) = D4(1)

'组合C5,D5成C_D

For i = 0 To 27

C_D(i) = C5(i)

C_D(i + 28) = D5(i)

Next

'PC_2转换,天生K5

For i = 0 To 47

K5(i) = C_D(PC_2(i))

Next

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'天生C6,D6

For i = 0 To 25

C6(i) = C5(i + Lsi(6))

D6(i) = D5(i + Lsi(6))

Next

C6(26) = C5(0)

D6(26) = D5(0)

C6(27) = C5(1)

D6(27) = D5(1)

'组合C6,D6成C_D

For i = 0 To 27

C_D(i) = C6(i)

C_D(i + 28) = D6(i)

Next

'PC_2转换,天生K6

For i = 0 To 47

K6(i) = C_D(PC_2(i))

Next

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'天生C7,D7

For i = 0 To 25

C7(i) = C6(i + Lsi(7))

D7(i) = D6(i + Lsi(7))

Next

C7(26) = C6(0)

D7(26) = D6(0)

C7(27) = C6(1)

D7(27) = D6(1)

'组合C7,D7成C_D

For i = 0 To 27

C_D(i) = C7(i)

C_D(i + 28) = D7(i)

Next

'PC_2转换,天生K7

For i = 0 To 47

K7(i) = C_D(PC_2(i))

Next

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'天生C8,D8

For i = 0 To 25

C8(i) = C7(i + Lsi(8))

D8(i) = D7(i + Lsi(8))

Next

C8(26) = C7(0)

D8(26) = D7(0)

C8(27) = C7(1)

D8(27) = D7(1)

'组合C8,D8成C_D

For i = 0 To 27

C_D(i) = C8(i)

C_D(i + 28) = D8(i)

Next

'PC_2转换,天生K8

For i = 0 To 47

K8(i) = C_D(PC_2(i))

Next

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'天生C9,D9

For i = 0 To 26

C9(i) = C8(i + Lsi(9))

D9(i) = D8(i + Lsi(9))

Next

C9(27) = C8(0)

D9(27) = D8(0)

'组合C9,D9成C_D

For i = 0 To 27

C_D(i) = C9(i)

C_D(i + 28) = D9(i)

Next

'PC_2转换,天生K9

For i = 0 To 47

K9(i) = C_D(PC_2(i))

Next

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'天生C10,D10

For i = 0 To 25

C10(i) = C9(i + Lsi(10))

D10(i) = D9(i + Lsi(10))

Next

C10(26) = C9(0)

D10(26) = D9(0)

C10(27) = C9(1)

D10(27) = D9(1)

'组合C10,D10成C_D

For i = 0 To 27

C_D(i) = C10(i)

C_D(i + 28) = D10(i)

Next

'PC_2转换,天生K10

For i = 0 To 47

K10(i) = C_D(PC_2(i))

Next

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'天生C11,D11

For i = 0 To 25

C11(i) = C10(i + Lsi(11))

D11(i) = D10(i + Lsi(11))

Next

C11(26) = C10(0)

D11(26) = D10(0)

C11(27) = C10(1)

D11(27) = D10(1)

'组合C11,D11成C_D

For i = 0 To 27

C_D(i) = C11(i)

C_D(i + 28) = D11(i)

Next

'PC_2转换,天生K11

For i = 0 To 47

K11(i) = C_D(PC_2(i))

Next

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'天生C12,D12

For i = 0 To 25

C12(i) = C11(i + Lsi(12))

D12(i) = D11(i + Lsi(12))

Next

C12(26) = C11(0)

D12(26) = D11(0)

C12(27) = C11(1)

D12(27) = D11(1)

'组合C12,D12成C_D

For i = 0 To 27

C_D(i) = C12(i)

C_D(i + 28) = D12(i)

Next

'PC_2转换,天生K12

For i = 0 To 47

K12(i) = C_D(PC_2(i))

Next

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'天生C13,D13

For i = 0 To 25

C13(i) = C12(i + Lsi(13))

D13(i) = D12(i + Lsi(13))

Next

C13(26) = C12(0)

D13(26) = D12(0)

C13(27) = C12(1)

D13(27) = D12(1)

'组合C13,D13成C_D

For i = 0 To 27

C_D(i) = C13(i)

C_D(i + 28) = D13(i)

Next

'PC_2转换,天生K13

For i = 0 To 47

K13(i) = C_D(PC_2(i))

Next

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'天生C14,D14

For i = 0 To 25

C14(i) = C13(i + Lsi(14))

D14(i) = D13(i + Lsi(14))

Next

C14(26) = C13(0)

D14(26) = D13(0)

C14(27) = C13(1)

D14(27) = D13(1)

'组合C14,D14成C_D

For i = 0 To 27

C_D(i) = C14(i)

C_D(i + 28) = D14(i)

Next

'PC_2转换,天生K14

For i = 0 To 47

K14(i) = C_D(PC_2(i))

Next

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'天生C15,D15

For i = 0 To 25

C15(i) = C14(i + Lsi(15))

D15(i) = D14(i + Lsi(15))

Next

C15(26) = C14(0)

D15(26) = D14(0)

C15(27) = C14(1)

D15(27) = D14(1)

'组合C15,D15成C_D

For i = 0 To 27

C_D(i) = C15(i)

C_D(i + 28) = D15(i)

Next

'PC_2转换,天生K15

For i = 0 To 47

K15(i) = C_D(PC_2(i))

Next

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'天生C16,D16

For i = 0 To 26

C16(i) = C15(i + Lsi(16))

D16(i) = D15(i + Lsi(16))

Next

C16(27) = C15(0)

D16(27) = D15(0)

'组合C16,D16成C_D

For i = 0 To 27

C_D(i) = C16(i)

C_D(i + 28) = D16(i)

Next

'PC_2转换,天生K16

For i = 0 To 47

K16(i) = C_D(PC_2(i))

Next

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'将明文位数扩展为8的倍数

If (UBound(sCode) + 1) Mod 8 > 0 Then ReDim Preserve sCode(((UBound(sCode) + 1) \ 8 + 1) * 8 - 1)

'定义返回密文长度

ReDim bReturn(UBound(sCode))

For j = 0 To UBound(sCode) Step 8

'加密历程

'依次取8位加密

CopyMemory tempCode(0), sCode(j), 8

For i = 0 To 7

BinCode(i * 8 + 0) = (tempCode(i) And &H80) \ &H80

BinCode(i * 8 + 1) = (tempCode(i) And &H40) \ &H40

BinCode(i * 8 + 2) = (tempCode(i) And &H20) \ &H20

BinCode(i * 8 + 3) = (tempCode(i) And &H10) \ &H10

BinCode(i * 8 + 4) = (tempCode(i) And &H8) \ &H8

BinCode(i * 8 + 5) = (tempCode(i) And &H4) \ &H4

BinCode(i * 8 + 6) = (tempCode(i) And &H2) \ &H2

BinCode(i * 8 + 7) = (tempCode(i) And &H1) \ &H1

Next

'IP置换

For i = 0 To 63

CodeIP(i) = BinCode(IP(i))

Next

'分段

For i = 0 To 31

L0(i) = CodeIP(i)

R0(i) = CodeIP(i + 32)

Next

'进行第一次迭代

For i = 0 To 47

CodeE(i) = R0(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K1(i)'与K1按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L1,R1

R1(i) = L0(i) Xor CodeP(i)

L1(i) = R0(i)

Next

'进行第二次迭代

For i = 0 To 47

CodeE(i) = R1(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K2(i)'与K2按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L2,R2

R2(i) = L1(i) Xor CodeP(i)

L2(i) = R1(i)

Next

'进行第三次迭代

For i = 0 To 47

CodeE(i) = R2(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K3(i)'与K3按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1)凯发k8娱乐app下载 * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L3,R3

R3(i) = L2(i) Xor CodeP(i)

L3(i) = R2(i)

Next

'进行第四次迭代

For i = 0 To 47

CodeE(i) = R3(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K4(i)'与K4按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L4,R4

R4(i) = L3(i) Xor CodeP(i)

L4(i) = R3(i)

Next

'进行第五次迭代

For i = 0 To 47

CodeE(i) = R4(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K5(i)'与K5按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L5,R5

R5(i) = L4(i) Xor CodeP(i)

L5(i) = R4(i)

Next

'进行第六次迭代

For i = 0 To 47

CodeE(i) = R5(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K6(i)'与K6按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0)凯发k8娱乐app下载 * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L6,R6

R6(i) = L5(i) Xor CodeP(i)

L6(i) = R5(i)

Next

'进行第7次迭代

For i = 0 To 47

CodeE(i) = R6(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K7(i)'与K7按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L7,R7

R7(i) = L6(i) Xor CodeP(i)

L7(i) = R6(i)

Next

'进行第8次迭代

For i = 0 To 47

CodeE(i) = R7(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K8(i)'与K8按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L8,R8

R8(i) = L7(i) Xor CodeP(i)

L8(i) = R7(i)

Next

'进行第9次迭代

For i = 0 To 47

CodeE(i) = R8(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K9(i)'与K9按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L9,R9

R9(i) = L8(i) Xor CodeP(i)

L9(i) = R8(i)

Next

'进行第10次迭代

For i = 0 To 47

CodeE(i) = R9(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K10(i)'与K10按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L10,R10

R10(i) = L9(i) Xor CodeP(i)

L10(i) = R9(i)

Next

'进行第11次迭代

For i = 0 To 47

CodeE(i) = R10(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K11(i)'与K11按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L11,R11

R11(i) = L10(i) Xor CodeP(i)

L11(i) = R10(i)

Next

'进行第12次迭代

For i = 0 To 47

CodeE(i) = R11(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K12(i)'与K12按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L12,R12

R12(i) = L11(i) Xor CodeP(i)

L12(i) = R11(i)

Next

'进行第13次迭代

For i = 0 To 47

CodeE(i) = R12(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K13(i)'与K13按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L13,R13

R13(i) = L12(i) Xor CodeP(i)

L13(i) = R12(i)

Next

'进行第14次迭代

For i = 0 To 47

CodeE(i) = R13(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K14(i)'与K14按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L14,R14

R14(i) = L13(i) Xor CodeP(i)

L14(i) = R13(i)

Next

'进行第15次迭代

For i = 0 To 47

CodeE(i) = R14(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K15(i)'与K15按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L15,R15

R15(i) = L14(i) Xor CodeP(i)

L15(i) = R14(i)

Next

'进行第16次迭代

For i = 0 To 47

CodeE(i) = R15(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K16(i)'与K16按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L11,R11

R16(i) = L15(i) Xor CodeP(i)

L16(i) = R15(i)

Next

For i = 0 To 31

BinCode(i) = L16(i)

BinCode(i + 32) = R16(i)

Next

For i = 0 To 63

CodeIP(i) = BinCode(IP_1(i))

Next

For i = 0 To 7

tempReturn(i) = CodeIP(i * 8 + 0) * &H80

tempReturn(i) = tempReturn(i) + CodeIP(i * 8 + 1) * &H40

tempReturn(i) = tempReturn(i) + CodeIP(i * 8 + 2) * &H20

tempReturn(i) = tempReturn(i) + CodeIP(i * 8 + 3) * &H10

tempReturn(i) = tempReturn(i) + CodeIP(i * 8 + 4) * &H8

tempReturn(i) = tempReturn(i) + CodeIP(i * 8 + 5) * &H4

tempReturn(i) = tempReturn(i) + CodeIP(i * 8 + 6) * &H2

tempReturn(i) = tempReturn(i) + CodeIP(i * 8 + 7) * &H1

Next

CopyMemory bReturn(j), tempReturn(0), 8

Next

End Sub

(三)--解密

'sCode待解密字串

'sKey密钥字串

Public Sub DES_Decode(ByRef sCode() As Byte, ByVal sKey As String, ByRef bReturn() As Byte)

Attribute DES_Decode.VB_Description = "解密sCode:密文16进制串sKey:密钥文本,前8位有效bReturn:明文16进制串"

Dim LenTimes As Integer'明文

Dim tempKey() As Byte'寄放密钥

Dim BinKey(63) As Byte'64位二进制原始密钥

Dim KeyPC_1(55) As Byte'寄放56位密钥

Dim tempCode(7) As Byte'寄放8位原始密文

Dim tempReturn(7) As Byte'寄放8位明文

Dim BinCode(63) As Byte'寄放64位明文

Dim CodeIP(63) As Byte'寄放IP置换结果

Dim CodeE(47) As Byte'E膨胀结果

Dim CodeP(31)As Byte'P变换结果

Dim RetS(47)As Byte'S盒运算32位结果

Dim S(7) As Byte'S盒运算8个结果

Dim CodeS1(5) As Byte: Dim CodeS2(5) As Byte: Dim CodeS3(5) As Byte: Dim CodeS4(5) As Byte

Dim CodeS5(5) As Byte: Dim CodeS6(5) As Byte: Dim CodeS7(5) As Byte: Dim CodeS8(5) As Byte

Dim L0(31) As Byte: Dim R0(31) As Byte

Dim L1(31) As Byte: Dim R1(31) As Byte

Dim L2(31) As Byte: Dim R2(31) As Byte

Dim L3(31) As Byte: Dim R3(31) As Byte

Dim L4(31) As Byte: Dim R4(31) As Byte

Dim L5(31) As Byte: Dim R5(31) As Byte

Dim L6(31) As Byte: Dim R6(31) As Byte

Dim L7(31) As Byte: Dim R7(31) As Byte

Dim L8(31) As Byte: Dim R8(31) As Byte

Dim L9(31) As Byte: Dim R9(31) As Byte

Dim L10(31) As Byte: Dim R10(31) As Byte

Dim L11(31) As Byte: Dim R11(31) As Byte

Dim L12(31) As Byte: Dim R12(31) As Byte

Dim L13(31) As Byte: Dim R13(31) As Byte

Dim L14(31) As Byte: Dim R14(31) As Byte

Dim L15(31) As Byte: Dim R15(31) As Byte

Dim L16(31) As Byte: Dim R16(31) As Byte

Dim C0(27) As Byte: Dim D0(27) As Byte'16个密钥

Dim C1(27) As Byte: Dim D1(27) As Byte

Dim C2(27) As Byte: Dim D2(27) As Byte:

Dim C3(27) As Byte: Dim D3(27) As Byte:

Dim C4(27) As Byte: Dim D4(27) As Byte:

Dim C5(27) As Byte: Dim D5(27) As Byte:

Dim C6(27) As Byte: Dim D6(27) As Byte:

Dim C7(27) As Byte: Dim D7(27) As Byte:

Dim C8(27) As Byte: Dim D8(27) As Byte:

Dim C9(27) As Byte: Dim D9(27) As Byte:

Dim C10(27) As Byte: Dim D10(27) As Byte:

Dim C11(27) As Byte: Dim D11(27) As Byte:

Dim C12(27) As Byte: Dim D12(27) As Byte:

Dim C13(27) As Byte: Dim D13(27) As Byte:

Dim C14(27) As Byte: Dim D14(27) As Byte:

Dim C15(27) As Byte: Dim D15(27) As Byte:

Dim C16(27) As Byte: Dim D16(27) As Byte:

Dim C_D(55) As Byte'Cn,Dn合并后的寄放处

Dim K1(47) As Byte: Dim K2(47) As Byte: Dim K3(47) As Byte: Dim K4(47) As Byte:

Dim K5(47) As Byte: Dim K6(47) As Byte: Dim K7(47) As Byte: Dim K8(47) As Byte:

Dim K9(47) As Byte: Dim K10(47) As Byte: Dim K11(47) As Byte: Dim K12(47) As Byte:

Dim K13(47) As Byte: Dim K14(47) As Byte: Dim K15(47) As Byte: Dim K16(47) As Byte:

Dim i As Integer

Dim j As Integer

'取密钥的前8字节

tempKey = StrConv(sKey, vbFromUnicode)

ReDim Preserve tempKey(7)

For i = 0 To 7

BinKey(i * 8 + 0) = (tempKey(i) And &H80) \ &H80

BinKey(i * 8 + 1) = (tempKey(i) And &H40) \ &H40

BinKey(i * 8 + 2) = (tempKey(i) And &H20) \ &H20

BinKey(i * 8 + 3) = (tempKey(i) And &H10) \ &H10

BinKey(i * 8 + 4) = (tempKey(i) And &H8) \ &H8

BinKey(i * 8 + 5) = (tempKey(i) And &H4) \ &H4

BinKey(i * 8 + 6) = (tempKey(i) And &H2) \ &H2

BinKey(i * 8 + 7) = (tempKey(i) And &H1) \ &H1

Next

'PC_1转换

For i = 0 To 55

KeyPC_1(i) = BinKey(PC_1(i))

Next

'天生C0,D0

For i = 0 To 27

C0(i) = KeyPC_1(i)

D0(i) = KeyPC_1(i + 28)

Next

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'天生C1,D1

For i = 0 To 26

C1(i) = C0(i + Lsi(1))

D1(i) = D0(i + Lsi(1))

Next

C1(27) = C0(0)

D1(27) = D0(0)

'组合C1,D1成C_D

For i = 0 To 27

C_D(i) = C1(i)

C_D(i + 28) = D1(i)

Next

'PC_2转换,天生K1

For i = 0 To 47

K1(i) = C_D(PC_2(i))

Next

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'天生C2,D2

For i = 0 To 26

C2(i) = C1(i + Lsi(2))

D2(i) = D1(i + Lsi(2))

Next

C2(27) = C1(0)

D2(27) = D1(0)

'组合C2,D2成C_D

For i = 0 To 27

C_D(i) = C2(i)

C_D(i + 28) = D2(i)

Next

'PC_2转换,天生K2

For i = 0 To 47

K2(i) = C_D(PC_2(i))

Next

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'天生C3,D3

For i = 0 To 25

C3(i) = C2(i + Lsi(3))

D3(i) = D2(i + Lsi(3))

Next

C3(26) = C2(0)

D3(26) = D2(0)

C3(27) = C2(1)

D3(27) = D2(1)

'组合C3,D3成C_D

For i = 0 To 27

C_D(i) = C3(i)

C_D(i + 28) = D3(i)

Next

'PC_2转换,天生K3

For i = 0 To 47

K3(i) = C_D(PC_2(i))

Next

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'天生C4,D4

For i = 0 To 25

C4(i) = C3(i + Lsi(4))

D4(i) = D3(i + Lsi(4))

Next

C4(26) = C3(0)

D4(26) = D3(0)

C4(27) = C3(1)

D4(27) = D3(1)

'组合C4,D4成C_D

For i = 0 To 27

C_D(i) = C4(i)

C_D(i + 28) = D4(i)

Next

'PC_2转换,天生K4

For i = 0 To 47

K4(i) = C_D(PC_2(i))

Next

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'天生C5,D5

For i = 0 To 25

C5(i) = C4(i + Lsi(5))

D5(i) = D4(i + Lsi(5))

Next

C5(26) = C4(0)

D5(26) = D4(0)

C5(27) = C4(1)

D5(27) = D4(1)

'组合C5,D5成C_D

For i = 0 To 27

C_D(i) = C5(i)

C_D(i + 28) = D5(i)

Next

'PC_2转换,天生K5

For i = 0 To 47

K5(i) = C_D(PC_2(i))

Next

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'天生C6,D6

For i = 0 To 25

C6(i) = C5(i + Lsi(6))

D6(i) = D5(i + Lsi(6))

Next

C6(26) = C5(0)

D6(26) = D5(0)

C6(27) = C5(1)

D6(27) = D5(1)

'组合C6,D6成C_D

For i = 0 To 27

C_D(i) = C6(i)

C_D(i + 28) = D6(i)

Next

'PC_2转换,天生K6

For i = 0 To 47

K6(i) = C_D(PC_2(i))

Next

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'天生C7,D7

For i = 0 To 25

C7(i) = C6(i + Lsi(7))

D7(i) = D6(i + Lsi(7))

Next

C7(26) = C6(0)

D7(26) = D6(0)

C7(27) = C6(1)

D7(27) = D6(1)

'组合C7,D7成C_D

For i = 0 To 27

C_D(i) = C7(i)

C_D(i + 28) = D7(i)

Next

'PC_2转换,天生K7

For i = 0 To 47

K7(i) = C_D(PC_2(i))

Next

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'天生C8,D8

For i = 0 To 25

C8(i) = C7(i + Lsi(8))

D8(i) = D7(i + Lsi(8))

Next

C8(26) = C7(0)

D8(26) = D7(0)

C8(27) = C7(1)

D8(27) = D7(1)

'组合C8,D8成C_D

For i = 0 To 27

C_D(i) = C8(i)

C_D(i + 28) = D8(i)

Next

'PC_2转换,天生K8

For i = 0 To 47

K8(i) = C_D(PC_2(i))

Next

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'天生C9,D9

For i = 0 To 26

C9(i) = C8(i + Lsi(9))

D9(i) = D8(i + Lsi(9))

Next

C9(27) = C8(0)

D9(27) = D8(0)

'组合C9,D9成C_D

For i = 0 To 27

C_D(i) = C9(i)

C_D(i + 28) = D9(i)

Next

'PC_2转换,天生K9

For i = 0 To 47

K9(i) = C_D(PC_2(i))

Next

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'天生C10,D10

For i = 0 To 25

C10(i) = C9(i + Lsi(10))

D10(i) = D9(i + Lsi(10))

Next

C10(26) = C9(0)

D10(26) = D9(0)

C10(27) = C9(1)

D10(27) = D9(1)

'组合C10,D10成C_D

For i = 0 To 27

C_D(i) = C10(i)

C_D(i + 28) = D10(i)

Next

'PC_2转换,天生K10

For i = 0 To 47

K10(i) = C_D(PC_2(i))

Next

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'天生C11,D11

For i = 0 To 25

C11(i) = C10(i + Lsi(11))

D11(i) = D10(i + Lsi(11))

Next

C11(26) = C10(0)

D11(26) = D10(0)

C11(27) = C10(1)

D11(27) = D10(1)

'组合C11,D11成C_D

For i = 0 To 27

C_D(i) = C11(i)

C_D(i + 28) = D11(i)

Next

'PC_2转换,天生K11

For i = 0 To 47

K11(i) = C_D(PC_2(i))

Next

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'天生C12,D12

For i = 0 To 25

C12(i) = C11(i + Lsi(12))

D12(i) = D11(i + Lsi(12))

Next

C12(26) = C11(0)

D12(26) = D11(0)

C12(27) = C11(1)

D12(27) = D11(1)

'组合C12,D12成C_D

For i = 0 To 27

C_D(i) = C12(i)

C_D(i + 28) = D12(i)

Next

'PC_2转换,天生K12

For i = 0 To 47

K12(i) = C_D(PC_2(i))

Next

'奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫K13

'天生C13,D13

For i = 0 To 25

C13(i) = C12(i + Lsi(13))

D13(i) = D12(i + Lsi(13))

Next

C13(26) = C12(0)

D13(26) = D12(0)

C13(27) = C12(1)

D13(27) = D12(1)

'组合C13,D13成C_D

For i = 0 To 27

C_D(i) = C13(i)

C_D(i + 28) = D13(i)

Next

'PC_2转换,天生K13

For i = 0 To 47

K13(i) = C_D(PC_2(i))

Next

'奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫K14

'天生C14,D14

For i = 0 To 25

C14(i) = C13(i + Lsi(14))

D14(i) = D13(i + Lsi(14))

Next

C14(26) = C13(0)

D14(26) = D13(0)

C14(27) = C13(1)

D14(27) = D13(1)

'组合C14,D14成C_D

For i = 0 To 27

C_D(i) = C14(i)

C_D(i + 28) = D14(i)

Next

'PC_2转换,天生K14

For i = 0 To 47

K14(i) = C_D(PC_2(i))

Next

'奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫K15

'天生C15,D15

For i = 0 To 25

C15(i) = C14(i + Lsi(15))

D15(i) = D14(i + Lsi(15))

Next

C15(26) = C14(0)

D15(26) = D14(0)

C15(27) = C14(1)

D15(27) = D14(1)

'组合C15,D15成C_D

For i = 0 To 27

C_D(i) = C15(i)

C_D(i + 28) = D15(i)

Next

'PC_2转换,天生K15

For i = 0 To 47

K15(i) = C_D(PC_2(i))

Next

'奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫奸淫K16

'天生C16,D16

For i = 0 To 26

C16(i) = C15(i + Lsi(16))

D16(i) = D15(i + Lsi(16))

Next

C16(27) = C15(0)

D16(27) = D15(0)

'组合C16,D16成C_D

For i = 0 To 27

C_D(i) = C16(i)

C_D(i + 28) = D16(i)

Next

'PC_2转换,天生K16

For i = 0 To 47

K16(i) = C_D(PC_2(i))

Next

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'加密历程

'将明文位数扩展为8的倍数

If (UBound(sCode) + 1) Mod 8 > 0 Then ReDim Preserve sCode(((UBound(sCode) + 1) \ 8 + 1) * 8 - 1)

'定义返回密文长度

ReDim bReturn(UBound(sCode))

For j = 0 To UBound(sCode) Step 8

CopyMemory tempCode(0), sCode(j), 8

For i = 0 To 7

BinCode(i * 8 + 0) = (tempCode(i) And &H80) \ &H80

BinCode(i * 8 + 1) = (tempCode(i) And &H40) \ &H40

BinCode(i * 8 + 2) = (tempCode(i) And &H20) \ &H20

BinCode(i * 8 + 3) = (tempCode(i) And &H10) \ &H10

BinCode(i * 8 + 4) = (tempCode(i) And &H8) \ &H8

BinCode(i * 8 + 5) = (tempCode(i) And &H4) \ &H4

BinCode(i * 8 + 6) = (tempCode(i) And &H2) \ &H2

BinCode(i * 8 + 7) = (tempCode(i) And &H1) \ &H1

Next

'IP置换

For i = 0 To 63

CodeIP(i) = BinCode(IP(i))

Next

'分段

For i = 0 To 31

R0(i) = CodeIP(i)

L0(i) = CodeIP(i + 32)

Next

'进行第一次迭代

For i = 0 To 47

CodeE(i) = R0(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K16(i)'与K16按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L1,R1

R1(i) = L0(i) Xor CodeP(i)

L1(i) = R0(i)

Next

'进行第二次迭代

For i = 0 To 47

CodeE(i) = R1(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K15(i)'与K15按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L2,R2

R2(i) = L1(i) Xor CodeP(i)

L2(i) = R1(i)

Next

'进行第三次迭代

For i = 0 To 47

CodeE(i) = R2(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K14(i)'与K14按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)凯发k8娱乐app下载

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L3,R3

R3(i) = L2(i) Xor CodeP(i)

L3(i) = R2(i)

Next

'进行第四次迭代

For i = 0 To 47

CodeE(i) = R3(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K13(i)'与K13按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L4,R4

R4(i) = L3(i) Xor CodeP(i)

L4(i) = R3(i)

Next

'进行第五次迭代

For i = 0 To 47

CodeE(i) = R4(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K12(i)'与K12按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L5,R5

R5(i) = L4(i) Xor CodeP(i)

L5(i) = R4(i)

Next

'进行第六次迭代

For i = 0 To 47

CodeE(i) = R5(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K11(i)'与K11按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L6,R6

R6(i) = L5(i) Xor CodeP(i)

L6(i) = R5(i)

Next

'进行第7次迭代

For i = 0 To 47

CodeE(i) = R6(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K10(i)'与K10按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L7,R7

R7(i) = L6(i) Xor CodeP(i)

L7(i) = R6(i)

Next

'进行第8次迭代

For i = 0 To 47

CodeE(i) = R7(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K9(i)'与K9按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L8,R8

R8(i) = L7(i) Xor CodeP(i)

L8(i) = R7(i)

Next

'进行第9次迭代

For i = 0 To 47

CodeE(i) = R8(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K8(i)'与K8按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L9,R9

R9(i) = L8(i) Xor CodeP(i)

L9(i) = R8(i)

Next

'进行第10次迭代

For i = 0 To 47

CodeE(i) = R9(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K7(i)'与K7按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L10,R10

R10(i) = L9(i) Xor CodeP(i)

L10(i) = R9(i)

Next

'进行第11次迭代

For i = 0 To 47

CodeE(i) = R10(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K6(i)'与K6按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L11,R11

R11(i) = L10(i) Xor CodeP(i)

L11(i) = R10(i)

Next

'进行第12次迭代

For i = 0 To 47

CodeE(i) = R11(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K5(i)'与K5按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L12,R12

R12(i) = L11(i) Xor CodeP(i)

L12(i) = R11(i)

Next

'进行第13次迭代

For i = 0 To 47

CodeE(i) = R12(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K4(i)'与K4按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L13,R13

R13(i) = L12(i) Xor CodeP(i)

L13(i) = R12(i)

Next

'进行第14次迭代

For i = 0 To 47

CodeE(i) = R13(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K3(i)'与K3按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L14,R14

R14(i) = L13(i) Xor CodeP(i)

L14(i) = R13(i)

Next

'进行第15次迭代

For i = 0 To 47

CodeE(i) = R14(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K2(i)'与K2按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L15,R15

R15(i) = L14(i) Xor CodeP(i)

L15(i) = R14(i)

Next

'进行第16次迭代

For i = 0 To 47

CodeE(i) = R15(E(i))'颠末E变换扩充,由32位变为48位

CodeE(i) = CodeE(i) Xor K1(i)'与K1按位作不进位加法运算

Next

'分8组

For i = 0 To 5

CodeS1(i) = CodeE(i)

CodeS2(i) = CodeE(i + 6)

CodeS3(i) = CodeE(i + 12)

CodeS4(i) = CodeE(i + 18)

CodeS5(i) = CodeE(i + 24)

CodeS6(i) = CodeE(i + 30)

CodeS7(i) = CodeE(i + 36)

CodeS8(i) = CodeE(i + 42)

Next

'S盒运算,获得8个数

S(0) = S1(CodeS1(5) + CodeS1(0) * 2, CodeS1(4) + CodeS1(3) * 2 + CodeS1(2) * 4 + CodeS1(1) * 8)

S(1) = S2(CodeS2(5) + CodeS2(0) * 2, CodeS2(4) + CodeS2(3) * 2 + CodeS2(2) * 4 + CodeS2(1) * 8)

S(2) = S3(CodeS3(5) + CodeS3(0) * 2, CodeS3(4) + CodeS3(3) * 2 + CodeS3(2) * 4 + CodeS3(1) * 8)

S(3) = S4(CodeS4(5) + CodeS4(0) * 2, CodeS4(4) + CodeS4(3) * 2 + CodeS4(2) * 4 + CodeS4(1) * 8)

S(4) = S5(CodeS5(5) + CodeS5(0) * 2, CodeS5(4) + CodeS5(3) * 2 + CodeS5(2) * 4 + CodeS5(1) * 8)

S(5) = S6(CodeS6(5) + CodeS6(0) * 2, CodeS6(4) + CodeS6(3) * 2 + CodeS6(2) * 4 + CodeS6(1) * 8)

S(6) = S7(CodeS7(5) + CodeS7(0) * 2, CodeS7(4) + CodeS7(3) * 2 + CodeS7(2) * 4 + CodeS7(1) * 8)

S(7) = S8(CodeS8(5) + CodeS8(0) * 2, CodeS8(4) + CodeS8(3) * 2 + CodeS8(2) * 4 + CodeS8(1) * 8)

'S盒运算32位结果

For i = 0 To 7

RetS(i * 4 + 0) = (S(i) And &H8) \ &H8

RetS(i * 4 + 1) = (S(i) And &H4) \ &H4

RetS(i * 4 + 2) = (S(i) And &H2) \ &H2

RetS(i * 4 + 3) = (S(i) And &H1) \ &H1

Next

For i = 0 To 31

'P变换

CodeP(i) = RetS(P(i))

'孕育发生L11,R11

R16(i) = L15(i) Xor CodeP(i)

L16(i) = R15(i)

Next

For i = 0 To 31

BinCode(i) = R16(i)

BinCode(i + 32) = L16(i)

Next

For i = 0 To 63

CodeIP(i) = BinCode(IP_1(i))

Next

For i = 0 To 7

tempReturn(i) = CodeIP(i * 8 + 0) * &H80

tempReturn(i) = tempReturn(i) + CodeIP(i * 8 + 1) * &H40

tempReturn(i) = tempReturn(i) + CodeIP(i * 8 + 2) * &H20

tempReturn(i) = tempReturn(i) + CodeIP(i * 8 + 3) * &H10

tempReturn(i) = tempReturn(i) + CodeIP(i * 8 + 4) * &H8

tempReturn(i) = tempReturn(i) + CodeIP(i * 8 + 5) * &H4

tempReturn(i) = tempReturn(i) + CodeIP(i * 8 + 6) * &H2

tempReturn(i) = tempReturn(i) + CodeIP(i * 8 + 7) * &H1

Next

CopyMemory bReturn(j), tempReturn(0), 8

Next

End Sub

谨已这篇文章送给和我一样在VB中苦苦挣扎的兄弟们!!

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