mirror of
https://github.com/ZxwyWebSite/lx-source.git
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260 lines
7.1 KiB
Go
260 lines
7.1 KiB
Go
// KuwoDES加密，从隔壁Python版移植
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// 由 BingChat/GPT-4 提供代码翻译
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// (因为位运算优先级的问题搞了半天)
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// 另一个Go版本(未测试)：https://github.com/cnsilvan/UnblockNeteaseMusic/tree/master/provider/kuwo
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package kw
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import (
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"encoding/base64"
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"github.com/ZxwyWebSite/ztool/x/bytesconv"
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"github.com/ZxwyWebSite/ztool/zcypt"
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)
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// 常量和数组
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const (
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DES_MODE_DECRYPT = 1
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)
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var (
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arrayE = []int64{
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31, 0, DES_MODE_DECRYPT, 2, 3, 4, -1, -1, 3, 4, 5, 6, 7, 8, -1, -1, 7, 8, 9, 10, 11, 12, -1, -1, 11, 12, 13, 14, 15, 16, -1, -1,
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15, 16, 17, 18, 19, 20, -1, -1, 19, 20, 21, 22, 23, 24, -1, -1,
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23, 24, 25, 26, 27, 28, -1, -1, 27, 28, 29, 30, 31, 30, -1, -1,
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}
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arrayIP = []int64{
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57, 49, 41, 33, 25, 17, 9, DES_MODE_DECRYPT, 59, 51, 43, 35, 27, 19, 11, 3, 61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7, 56, 48, 40, 32, 24, 16, 8, 0, 58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36, 28, 20, 12, 4, 62, 54, 46, 38, 30, 22, 14, 6,
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}
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arrayIP_1 = []int64{
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39, 7, 47, 15, 55, 23, 63, 31, 38, 6, 46, 14, 54, 22, 62, 30, 37, 5, 45, 13, 53, 21, 61, 29, 36, 4, 44, 12, 52, 20, 60, 28, 35, 3, 43, 11, 51, 19, 59, 27, 34, 2, 42, 10, 50, 18, 58, 26, 33, DES_MODE_DECRYPT, 41, 9, 49, 17, 57, 25, 32, 0, 40, 8, 48, 16, 56, 24,
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}
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arrayLs = []int64{1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1}
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arrayLsMask = []int64{0, 0x100001, 0x300003}
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arrayMask = make([]int64, 64)
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arrayP = []int64{
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15, 6, 19, 20, 28, 11, 27, 16,
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0, 14, 22, 25, 4, 17, 30, 9,
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1, 7, 23, 13, 31, 26, 2, 8,
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18, 12, 29, 5, 21, 10, 3, 24,
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}
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arrayPC_1 = []int64{
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56, 48, 40, 32, 24, 16, 8, 0,
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57, 49, 41, 33, 25, 17, 9, 1,
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58, 50, 42, 34, 26, 18, 10, 2,
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59, 51, 43, 35, 62, 54, 46, 38,
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30, 22, 14, 6, 61, 53, 45, 37,
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29, 21, 13, 5, 60, 52, 44, 36,
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28, 20, 12, 4, 27, 19, 11, 3,
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}
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arrayPC_2 = []int64{
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13, 16, 10, 23, 0, 4, -1, -1,
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2, 27, 14, 5, 20, 9, -1, -1,
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22, 18, 11, 3, 25, 7, -1, -1,
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15, 6, 26, 19, 12, 1, -1, -1,
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40, 51, 30, 36, 46, 54, -1, -1,
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29, 39, 50, 44, 32, 47, -1, -1,
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43, 48, 38, 55, 33, 52, -1, -1,
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45, 41, 49, 35, 28, 31, -1, -1,
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}
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matrixNSBox = [...][]int64{{
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14, 4, 3, 15, 2, 13, 5, 3,
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13, 14, 6, 9, 11, 2, 0, 5,
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4, 1, 10, 12, 15, 6, 9, 10,
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1, 8, 12, 7, 8, 11, 7, 0,
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0, 15, 10, 5, 14, 4, 9, 10,
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7, 8, 12, 3, 13, 1, 3, 6,
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15, 12, 6, 11, 2, 9, 5, 0,
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4, 2, 11, 14, 1, 7, 8, 13}, {
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15, 0, 9, 5, 6, 10, 12, 9,
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8, 7, 2, 12, 3, 13, 5, 2,
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1, 14, 7, 8, 11, 4, 0, 3,
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14, 11, 13, 6, 4, 1, 10, 15,
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3, 13, 12, 11, 15, 3, 6, 0,
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4, 10, 1, 7, 8, 4, 11, 14,
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13, 8, 0, 6, 2, 15, 9, 5,
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7, 1, 10, 12, 14, 2, 5, 9}, {
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10, 13, 1, 11, 6, 8, 11, 5,
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9, 4, 12, 2, 15, 3, 2, 14,
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0, 6, 13, 1, 3, 15, 4, 10,
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14, 9, 7, 12, 5, 0, 8, 7,
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13, 1, 2, 4, 3, 6, 12, 11,
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0, 13, 5, 14, 6, 8, 15, 2,
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7, 10, 8, 15, 4, 9, 11, 5,
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9, 0, 14, 3, 10, 7, 1, 12}, {
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7, 10, 1, 15, 0, 12, 11, 5,
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14, 9, 8, 3, 9, 7, 4, 8,
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13, 6, 2, 1, 6, 11, 12, 2,
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3, 0, 5, 14, 10, 13, 15, 4,
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13, 3, 4, 9, 6, 10, 1, 12,
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11, 0, 2, 5, 0, 13, 14, 2,
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8, 15, 7, 4, 15, 1, 10, 7,
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5, 6, 12, 11, 3, 8, 9, 14}, {
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2, 4, 8, 15, 7, 10, 13, 6,
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4, 1, 3, 12, 11, 7, 14, 0,
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12, 2, 5, 9, 10, 13, 0, 3,
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1, 11, 15, 5, 6, 8, 9, 14,
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14, 11, 5, 6, 4, 1, 3, 10,
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2, 12, 15, 0, 13, 2, 8, 5,
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11, 8, 0, 15, 7, 14, 9, 4,
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12, 7, 10, 9, 1, 13, 6, 3}, {
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12, 9, 0, 7, 9, 2, 14, 1,
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10, 15, 3, 4, 6, 12, 5, 11,
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1, 14, 13, 0, 2, 8, 7, 13,
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15, 5, 4, 10, 8, 3, 11, 6,
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10, 4, 6, 11, 7, 9, 0, 6,
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4, 2, 13, 1, 9, 15, 3, 8,
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15, 3, 1, 14, 12, 5, 11, 0,
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2, 12, 14, 7, 5, 10, 8, 13}, {
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4, 1, 3, 10, 15, 12, 5, 0,
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2, 11, 9, 6, 8, 7, 6, 9,
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11, 4, 12, 15, 0, 3, 10, 5,
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14, 13, 7, 8, 13, 14, 1, 2,
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13, 6, 14, 9, 4, 1, 2, 14,
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11, 13, 5, 0, 1, 10, 8, 3,
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0, 11, 3, 5, 9, 4, 15, 2,
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7, 8, 12, 15, 10, 7, 6, 12}, {
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13, 7, 10, 0, 6, 9, 5, 15,
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8, 4, 3, 10, 11, 14, 12, 5,
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2, 11, 9, 6, 15, 12, 0, 3,
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4, 1, 14, 13, 1, 2, 7, 8,
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1, 2, 12, 15, 10, 4, 0, 3,
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13, 14, 6, 9, 7, 8, 9, 6,
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15, 1, 5, 12, 3, 10, 14, 5,
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8, 7, 11, 0, 4, 13, 2, 11},
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}
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SECRET_KEY = []byte{0x79, 0x6c, 0x7a, 0x73, 0x78, 0x6b, 0x77, 0x6d} //bytesconv.StringToBytes(`ylzsxkwm`)
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)
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// 初始化arrayMask
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func init() {
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for i := range arrayMask {
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arrayMask[i] = 1 << i
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}
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arrayMask[63] *= -1
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}
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// 位变换函数
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func bit_transform(arr_int []int64, n int, l int64) (l2 int64) {
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// l2 := 0
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for i := 0; i < n; i++ {
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if arr_int[i] < 0 || (l&arrayMask[arr_int[i]]) == 0 {
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continue
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}
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l2 |= arrayMask[i]
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}
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return //l2
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}
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// DES加密函数
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func _DES64(longs []int64, l int64) (out int64) {
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// out := 0
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// SOut := 0
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pR := make([]int64, 8)
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pSource := make([]int64, 2) //[]int64{0, 0}
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// sbi := 0
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// t := 0
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// L := 0
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// R := 0
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out = bit_transform(arrayIP, 64, l)
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pSource[0] = 0xFFFFFFFF & out
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pSource[1] = (-4294967296 & out) >> 32
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for i := 0; i < 16; i++ {
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R := pSource[1]
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R = bit_transform(arrayE, 64, R)
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R ^= longs[i]
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for j := 0; j < 8; j++ {
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pR[j] = 255 & (R >> (j * 8))
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}
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var SOut int64
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for sbi := 7; sbi >= 0; sbi-- {
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SOut <<= 4
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SOut |= matrixNSBox[sbi][pR[sbi]]
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}
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R = bit_transform(arrayP, 32, SOut)
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L := pSource[0]
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pSource[0] = pSource[1]
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pSource[1] = L ^ R
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}
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pSource = []int64{pSource[1], pSource[0]}
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out = (-4294967296 & (pSource[1] << 32)) | (0xFFFFFFFF & pSource[0])
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out = bit_transform(arrayIP_1, 64, out)
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return //out
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}
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// 生成子密钥函数
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func sub_keys(l int64, longs []int64, n int) {
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l2 := bit_transform(arrayPC_1, 56, l)
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for i := 0; i < 16; i++ {
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l2 = ((l2 & arrayLsMask[arrayLs[i]]) << (28 - arrayLs[i])) | ((l2 & ^arrayLsMask[arrayLs[i]]) >> arrayLs[i])
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longs[i] = bit_transform(arrayPC_2, 64, l2)
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}
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j := 0
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for n == 1 && j < 8 {
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// l3 := longs[j]
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longs[j], longs[15-j] = longs[15-j], longs[j]
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j++
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}
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}
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// 加密函数
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func encrypt(msg []byte, key []byte) []byte {
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// if len(key) != 8 {
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// panic("key length must be 8 bytes")
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// }
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// 处理密钥块
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var l int64
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for i := 0; i < 8; i++ {
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l = l | int64(key[i])<<(i*8)
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}
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j := len(msg) / 8
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// arrLong1 存放的是转换后的密钥块, 在解密时只需要把这个密钥块反转就行了
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arrLong1 := make([]int64, 16)
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sub_keys(l, arrLong1, 0)
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// arrLong2 存放的是前部分的明文
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arrLong2 := make([]int64, j)
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for m := 0; m < j; m++ {
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for n := 0; n < 8; n++ {
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arrLong2[m] |= int64(msg[n+m*8]) << (n * 8)
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}
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}
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// 用于存放密文
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arrLong3 := make([]int64, (1+8*(j+1))/8)
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// 计算前部的数据块(除了最后一部分)
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for i1 := 0; i1 < j; i1++ {
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arrLong3[i1] = _DES64(arrLong1, arrLong2[i1])
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}
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// 保存多出来的字节
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arrByte1 := msg[j*8:]
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var l2 int64
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for i1 := 0; i1 < len(msg)%8; i1++ {
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l2 |= int64(arrByte1[i1]) << (i1 * 8)
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}
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// 计算多出的那一位(最后一位)
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arrLong3[j] = _DES64(arrLong1, l2)
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// 将密文转为字节型
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arrByte2 := make([]byte, 8*len(arrLong3))
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i4 := 0
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for _, l3 := range arrLong3 {
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for i6 := 0; i6 < 8; i6++ {
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arrByte2[i4] = byte(255 & (l3 >> (i6 * 8)))
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i4++
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}
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}
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return arrByte2
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}
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// base64编码函数
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func base64_encrypt(msg string) string {
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b1 := encrypt(bytesconv.StringToBytes(msg), SECRET_KEY)
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return zcypt.Base64ToString(base64.StdEncoding, b1)
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// s := base64.StdEncoding.EncodeToString(b1)
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// return s //strings.ReplaceAll(s, "\n", ``)
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}
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