Lint and update
This commit is contained in:
118
src/constants.ts
118
src/constants.ts
@@ -1,59 +1,73 @@
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// SKINNY-128/384+ block cipher constants.
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export const MEMBER_MASK = 32
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export const NB_ROUNDS = 40
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export const TWEAK_LENGTH = 48
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export const PT = [9, 15, 8, 13, 10, 14, 12, 11, 0, 1, 2, 3, 4, 5, 6, 7]
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export const MEMBER_MASK = 32;
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export const NB_ROUNDS = 40;
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export const TWEAK_LENGTH = 48;
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export const PT = [9, 15, 8, 13, 10, 14, 12, 11, 0, 1, 2, 3, 4, 5, 6, 7];
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export const LFSR_8_TK2 = [
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0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56,
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58, 60, 62, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, 99, 101, 103, 105, 107, 109,
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111, 113, 115, 117, 119, 121, 123, 125, 127, 128, 130, 132, 134, 136, 138, 140, 142, 144, 146, 148, 150, 152,
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154, 156, 158, 160, 162, 164, 166, 168, 170, 172, 174, 176, 178, 180, 182, 184, 186, 188, 190, 193, 195, 197,
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199, 201, 203, 205, 207, 209, 211, 213, 215, 217, 219, 221, 223, 225, 227, 229, 231, 233, 235, 237, 239, 241,
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243, 245, 247, 249, 251, 253, 255, 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39,
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41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 61, 63, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92,
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94, 96, 98, 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 129, 131, 133, 135, 137,
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139, 141, 143, 145, 147, 149, 151, 153, 155, 157, 159, 161, 163, 165, 167, 169, 171, 173, 175, 177, 179, 181,
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183, 185, 187, 189, 191, 192, 194, 196, 198, 200, 202, 204, 206, 208, 210, 212, 214, 216, 218, 220, 222, 224,
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226, 228, 230, 232, 234, 236, 238, 240, 242, 244, 246, 248, 250, 252, 254
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]
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0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40,
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42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 65, 67, 69, 71, 73, 75, 77, 79,
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81, 83, 85, 87, 89, 91, 93, 95, 97, 99, 101, 103, 105, 107, 109, 111, 113,
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115, 117, 119, 121, 123, 125, 127, 128, 130, 132, 134, 136, 138, 140, 142,
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144, 146, 148, 150, 152, 154, 156, 158, 160, 162, 164, 166, 168, 170, 172,
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174, 176, 178, 180, 182, 184, 186, 188, 190, 193, 195, 197, 199, 201, 203,
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205, 207, 209, 211, 213, 215, 217, 219, 221, 223, 225, 227, 229, 231, 233,
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235, 237, 239, 241, 243, 245, 247, 249, 251, 253, 255, 1, 3, 5, 7, 9, 11, 13,
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15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51,
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53, 55, 57, 59, 61, 63, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88,
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90, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120,
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122, 124, 126, 129, 131, 133, 135, 137, 139, 141, 143, 145, 147, 149, 151,
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153, 155, 157, 159, 161, 163, 165, 167, 169, 171, 173, 175, 177, 179, 181,
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183, 185, 187, 189, 191, 192, 194, 196, 198, 200, 202, 204, 206, 208, 210,
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212, 214, 216, 218, 220, 222, 224, 226, 228, 230, 232, 234, 236, 238, 240,
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242, 244, 246, 248, 250, 252, 254,
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];
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export const LFSR_8_TK3 = [
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0, 128, 1, 129, 2, 130, 3, 131, 4, 132, 5, 133, 6, 134, 7, 135, 8, 136, 9, 137, 10, 138, 11, 139, 12, 140,
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13, 141, 14, 142, 15, 143, 16, 144, 17, 145, 18, 146, 19, 147, 20, 148, 21, 149, 22, 150, 23, 151, 24, 152,
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25, 153, 26, 154, 27, 155, 28, 156, 29, 157, 30, 158, 31, 159, 160, 32, 161, 33, 162, 34, 163, 35, 164, 36,
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165, 37, 166, 38, 167, 39, 168, 40, 169, 41, 170, 42, 171, 43, 172, 44, 173, 45, 174, 46, 175, 47, 176, 48,
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177, 49, 178, 50, 179, 51, 180, 52, 181, 53, 182, 54, 183, 55, 184, 56, 185, 57, 186, 58, 187, 59, 188, 60,
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189, 61, 190, 62, 191, 63, 64, 192, 65, 193, 66, 194, 67, 195, 68, 196, 69, 197, 70, 198, 71, 199, 72, 200,
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73, 201, 74, 202, 75, 203, 76, 204, 77, 205, 78, 206, 79, 207, 80, 208, 81, 209, 82, 210, 83, 211, 84, 212,
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85, 213, 86, 214, 87, 215, 88, 216, 89, 217, 90, 218, 91, 219, 92, 220, 93, 221, 94, 222, 95, 223, 224, 96,
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225, 97, 226, 98, 227, 99, 228, 100, 229, 101, 230, 102, 231, 103, 232, 104, 233, 105, 234, 106, 235, 107,
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236, 108, 237, 109, 238, 110, 239, 111, 240, 112, 241, 113, 242, 114, 243, 115, 244, 116, 245, 117, 246,
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118, 247, 119, 248, 120, 249, 121, 250, 122, 251, 123, 252, 124, 253, 125, 254, 126, 255, 127
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]
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0, 128, 1, 129, 2, 130, 3, 131, 4, 132, 5, 133, 6, 134, 7, 135, 8, 136, 9,
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137, 10, 138, 11, 139, 12, 140, 13, 141, 14, 142, 15, 143, 16, 144, 17, 145,
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18, 146, 19, 147, 20, 148, 21, 149, 22, 150, 23, 151, 24, 152, 25, 153, 26,
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154, 27, 155, 28, 156, 29, 157, 30, 158, 31, 159, 160, 32, 161, 33, 162, 34,
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163, 35, 164, 36, 165, 37, 166, 38, 167, 39, 168, 40, 169, 41, 170, 42, 171,
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43, 172, 44, 173, 45, 174, 46, 175, 47, 176, 48, 177, 49, 178, 50, 179, 51,
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180, 52, 181, 53, 182, 54, 183, 55, 184, 56, 185, 57, 186, 58, 187, 59, 188,
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60, 189, 61, 190, 62, 191, 63, 64, 192, 65, 193, 66, 194, 67, 195, 68, 196,
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69, 197, 70, 198, 71, 199, 72, 200, 73, 201, 74, 202, 75, 203, 76, 204, 77,
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205, 78, 206, 79, 207, 80, 208, 81, 209, 82, 210, 83, 211, 84, 212, 85, 213,
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86, 214, 87, 215, 88, 216, 89, 217, 90, 218, 91, 219, 92, 220, 93, 221, 94,
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222, 95, 223, 224, 96, 225, 97, 226, 98, 227, 99, 228, 100, 229, 101, 230,
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102, 231, 103, 232, 104, 233, 105, 234, 106, 235, 107, 236, 108, 237, 109,
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238, 110, 239, 111, 240, 112, 241, 113, 242, 114, 243, 115, 244, 116, 245,
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117, 246, 118, 247, 119, 248, 120, 249, 121, 250, 122, 251, 123, 252, 124,
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253, 125, 254, 126, 255, 127,
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];
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export const S8 = [
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0x65, 0x4c, 0x6a, 0x42, 0x4b, 0x63, 0x43, 0x6b, 0x55, 0x75, 0x5a, 0x7a, 0x53, 0x73, 0x5b, 0x7b,
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0x35, 0x8c, 0x3a, 0x81, 0x89, 0x33, 0x80, 0x3b, 0x95, 0x25, 0x98, 0x2a, 0x90, 0x23, 0x99, 0x2b,
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0xe5, 0xcc, 0xe8, 0xc1, 0xc9, 0xe0, 0xc0, 0xe9, 0xd5, 0xf5, 0xd8, 0xf8, 0xd0, 0xf0, 0xd9, 0xf9,
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0xa5, 0x1c, 0xa8, 0x12, 0x1b, 0xa0, 0x13, 0xa9, 0x05, 0xb5, 0x0a, 0xb8, 0x03, 0xb0, 0x0b, 0xb9,
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0x32, 0x88, 0x3c, 0x85, 0x8d, 0x34, 0x84, 0x3d, 0x91, 0x22, 0x9c, 0x2c, 0x94, 0x24, 0x9d, 0x2d,
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0x62, 0x4a, 0x6c, 0x45, 0x4d, 0x64, 0x44, 0x6d, 0x52, 0x72, 0x5c, 0x7c, 0x54, 0x74, 0x5d, 0x7d,
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0xa1, 0x1a, 0xac, 0x15, 0x1d, 0xa4, 0x14, 0xad, 0x02, 0xb1, 0x0c, 0xbc, 0x04, 0xb4, 0x0d, 0xbd,
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0xe1, 0xc8, 0xec, 0xc5, 0xcd, 0xe4, 0xc4, 0xed, 0xd1, 0xf1, 0xdc, 0xfc, 0xd4, 0xf4, 0xdd, 0xfd,
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0x36, 0x8e, 0x38, 0x82, 0x8b, 0x30, 0x83, 0x39, 0x96, 0x26, 0x9a, 0x28, 0x93, 0x20, 0x9b, 0x29,
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0x66, 0x4e, 0x68, 0x41, 0x49, 0x60, 0x40, 0x69, 0x56, 0x76, 0x58, 0x78, 0x50, 0x70, 0x59, 0x79,
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0xa6, 0x1e, 0xaa, 0x11, 0x19, 0xa3, 0x10, 0xab, 0x06, 0xb6, 0x08, 0xba, 0x00, 0xb3, 0x09, 0xbb,
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0xe6, 0xce, 0xea, 0xc2, 0xcb, 0xe3, 0xc3, 0xeb, 0xd6, 0xf6, 0xda, 0xfa, 0xd3, 0xf3, 0xdb, 0xfb,
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0x31, 0x8a, 0x3e, 0x86, 0x8f, 0x37, 0x87, 0x3f, 0x92, 0x21, 0x9e, 0x2e, 0x97, 0x27, 0x9f, 0x2f,
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0x61, 0x48, 0x6e, 0x46, 0x4f, 0x67, 0x47, 0x6f, 0x51, 0x71, 0x5e, 0x7e, 0x57, 0x77, 0x5f, 0x7f,
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0xa2, 0x18, 0xae, 0x16, 0x1f, 0xa7, 0x17, 0xaf, 0x01, 0xb2, 0x0e, 0xbe, 0x07, 0xb7, 0x0f, 0xbf,
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0xe2, 0xca, 0xee, 0xc6, 0xcf, 0xe7, 0xc7, 0xef, 0xd2, 0xf2, 0xde, 0xfe, 0xd7, 0xf7, 0xdf, 0xff
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]
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0x65, 0x4c, 0x6a, 0x42, 0x4b, 0x63, 0x43, 0x6b, 0x55, 0x75, 0x5a, 0x7a, 0x53,
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0x73, 0x5b, 0x7b, 0x35, 0x8c, 0x3a, 0x81, 0x89, 0x33, 0x80, 0x3b, 0x95, 0x25,
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0x98, 0x2a, 0x90, 0x23, 0x99, 0x2b, 0xe5, 0xcc, 0xe8, 0xc1, 0xc9, 0xe0, 0xc0,
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0xe9, 0xd5, 0xf5, 0xd8, 0xf8, 0xd0, 0xf0, 0xd9, 0xf9, 0xa5, 0x1c, 0xa8, 0x12,
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0x1b, 0xa0, 0x13, 0xa9, 0x05, 0xb5, 0x0a, 0xb8, 0x03, 0xb0, 0x0b, 0xb9, 0x32,
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0x88, 0x3c, 0x85, 0x8d, 0x34, 0x84, 0x3d, 0x91, 0x22, 0x9c, 0x2c, 0x94, 0x24,
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0x9d, 0x2d, 0x62, 0x4a, 0x6c, 0x45, 0x4d, 0x64, 0x44, 0x6d, 0x52, 0x72, 0x5c,
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0x7c, 0x54, 0x74, 0x5d, 0x7d, 0xa1, 0x1a, 0xac, 0x15, 0x1d, 0xa4, 0x14, 0xad,
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0x02, 0xb1, 0x0c, 0xbc, 0x04, 0xb4, 0x0d, 0xbd, 0xe1, 0xc8, 0xec, 0xc5, 0xcd,
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0xe4, 0xc4, 0xed, 0xd1, 0xf1, 0xdc, 0xfc, 0xd4, 0xf4, 0xdd, 0xfd, 0x36, 0x8e,
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0x38, 0x82, 0x8b, 0x30, 0x83, 0x39, 0x96, 0x26, 0x9a, 0x28, 0x93, 0x20, 0x9b,
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0x29, 0x66, 0x4e, 0x68, 0x41, 0x49, 0x60, 0x40, 0x69, 0x56, 0x76, 0x58, 0x78,
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0x50, 0x70, 0x59, 0x79, 0xa6, 0x1e, 0xaa, 0x11, 0x19, 0xa3, 0x10, 0xab, 0x06,
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0xb6, 0x08, 0xba, 0x00, 0xb3, 0x09, 0xbb, 0xe6, 0xce, 0xea, 0xc2, 0xcb, 0xe3,
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0xc3, 0xeb, 0xd6, 0xf6, 0xda, 0xfa, 0xd3, 0xf3, 0xdb, 0xfb, 0x31, 0x8a, 0x3e,
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0x86, 0x8f, 0x37, 0x87, 0x3f, 0x92, 0x21, 0x9e, 0x2e, 0x97, 0x27, 0x9f, 0x2f,
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0x61, 0x48, 0x6e, 0x46, 0x4f, 0x67, 0x47, 0x6f, 0x51, 0x71, 0x5e, 0x7e, 0x57,
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0x77, 0x5f, 0x7f, 0xa2, 0x18, 0xae, 0x16, 0x1f, 0xa7, 0x17, 0xaf, 0x01, 0xb2,
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0x0e, 0xbe, 0x07, 0xb7, 0x0f, 0xbf, 0xe2, 0xca, 0xee, 0xc6, 0xcf, 0xe7, 0xc7,
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0xef, 0xd2, 0xf2, 0xde, 0xfe, 0xd7, 0xf7, 0xdf, 0xff,
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];
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export const C = [
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0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3E, 0x3D, 0x3B, 0x37, 0x2F,
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0x1E, 0x3C, 0x39, 0x33, 0x27, 0x0E, 0x1D, 0x3A, 0x35, 0x2B,
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0x16, 0x2C, 0x18, 0x30, 0x21, 0x02, 0x05, 0x0B, 0x17, 0x2E,
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0x1C, 0x38, 0x31, 0x23, 0x06, 0x0D, 0x1B, 0x36, 0x2D, 0x1A
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]
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0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3e, 0x3d, 0x3b, 0x37, 0x2f, 0x1e, 0x3c, 0x39,
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0x33, 0x27, 0x0e, 0x1d, 0x3a, 0x35, 0x2b, 0x16, 0x2c, 0x18, 0x30, 0x21, 0x02,
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0x05, 0x0b, 0x17, 0x2e, 0x1c, 0x38, 0x31, 0x23, 0x06, 0x0d, 0x1b, 0x36, 0x2d,
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0x1a,
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];
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// Romulus-M cryptography specification constants.
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export const T_LENGTH = 16
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export const COUNTER_LENGTH = 7
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export const T_LENGTH = 16;
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export const COUNTER_LENGTH = 7;
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@@ -1,8 +1,8 @@
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import { cryptoAeadDecrypt } from './romulus-m'
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import { cryptoAeadDecrypt } from "./romulus-m";
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interface DecryptResult {
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success: boolean
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plaintext: Uint8Array
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success: boolean;
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plaintext: Uint8Array;
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}
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/**
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@@ -13,17 +13,26 @@ interface DecryptResult {
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* @param key The encryption key.
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* @returns A decrypted DecryptResult object.
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*/
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export function decrypt (buffer: Uint8Array, associatedData: Uint8Array, key: Uint8Array): DecryptResult {
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export function decrypt(
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buffer: Uint8Array,
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associatedData: Uint8Array,
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key: Uint8Array,
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): DecryptResult {
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// Split nonce from ciphertext.
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const nonce = Array.from(buffer.slice(0, 16))
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const ciphertext = Array.from(buffer.slice(16))
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const nonce = Array.from(buffer.slice(0, 16));
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const ciphertext = Array.from(buffer.slice(16));
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// Decrypt ciphertext using the associated data, nonce and encryption key.
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const result = cryptoAeadDecrypt(ciphertext, Array.from(associatedData), nonce, Array.from(key))
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const result = cryptoAeadDecrypt(
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ciphertext,
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Array.from(associatedData),
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nonce,
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Array.from(key),
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);
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// Return the ciphertext and decryption status.
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return {
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success: result.success,
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plaintext: Uint8Array.from(result.plaintext)
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}
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plaintext: Uint8Array.from(result.plaintext),
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};
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}
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@@ -1,5 +1,5 @@
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import { cryptoAeadEncrypt } from './romulus-m'
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import { v4 as uuidv4 } from 'uuid'
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import { cryptoAeadEncrypt } from "./romulus-m";
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import { v4 as uuidv4 } from "uuid";
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/**
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* Encrypt a message using the Romulus-M encryption algorithm.
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@@ -9,14 +9,25 @@ import { v4 as uuidv4 } from 'uuid'
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* @param key The encryption key.
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* @returns The nonce-prepended ciphertext.
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*/
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export function encrypt (message: Uint8Array, associatedData: Uint8Array, key: Uint8Array): Uint8Array {
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export function encrypt(
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message: Uint8Array,
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associatedData: Uint8Array,
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key: Uint8Array,
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): Uint8Array {
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// Generate a nonce.
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const nonce = new Uint8Array(16)
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uuidv4({}, nonce)
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const nonce = new Uint8Array(16);
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uuidv4({}, nonce);
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// Encrypt the data using the associated data, newly generated nonce and encryption key.
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const ciphertext = Uint8Array.from(cryptoAeadEncrypt(Array.from(message), Array.from(associatedData), Array.from(nonce), Array.from(key)))
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const ciphertext = Uint8Array.from(
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cryptoAeadEncrypt(
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Array.from(message),
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Array.from(associatedData),
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Array.from(nonce),
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Array.from(key),
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),
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);
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// Return the nonce-prepended ciphertext.
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return new Uint8Array([...nonce, ...ciphertext])
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return new Uint8Array([...nonce, ...ciphertext]);
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}
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@@ -1,2 +1,2 @@
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export { encrypt } from './encrypt'
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export { decrypt } from './decrypt'
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export { encrypt } from "./encrypt";
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export { decrypt } from "./decrypt";
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357
src/romulus-m.ts
357
src/romulus-m.ts
@@ -1,5 +1,5 @@
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import { COUNTER_LENGTH } from './constants'
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import { tweakeyEncode, skinnyEncrypt } from './skinny-128-384-plus'
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import { COUNTER_LENGTH } from "./constants";
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import { tweakeyEncode, skinnyEncrypt } from "./skinny-128-384-plus";
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/**
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* Parse message into blocks.
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@@ -7,30 +7,30 @@ import { tweakeyEncode, skinnyEncrypt } from './skinny-128-384-plus'
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* @param blockLength The block length.
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* @returns An array of blocks.
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*/
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function parse (message: number[], blockLength: number): number[][] {
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function parse(message: number[], blockLength: number): number[][] {
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// Keep track of position in message currently parsed into blocks.
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let cursor = 0
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let cursor = 0;
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// Slice message into blocks.
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let ret: number[][] = []
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let ret: number[][] = [];
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while (message.length - cursor >= blockLength) {
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ret.push(message.slice(cursor, cursor + blockLength))
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cursor = cursor + blockLength
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ret.push(message.slice(cursor, cursor + blockLength));
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cursor = cursor + blockLength;
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}
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// Append any remaining blocks regardless of block length. These will be padded later.
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if (message.length - cursor > 0) {
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ret.push(message.slice(cursor))
|
||||
ret.push(message.slice(cursor));
|
||||
}
|
||||
|
||||
// If no message, return a single block.
|
||||
if (message.length === 0) {
|
||||
ret = [[]]
|
||||
ret = [[]];
|
||||
}
|
||||
|
||||
// Insert empty array at position 0.
|
||||
ret.splice(0, 0, [])
|
||||
return ret
|
||||
ret.splice(0, 0, []);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/**
|
||||
@@ -39,26 +39,26 @@ function parse (message: number[], blockLength: number): number[][] {
|
||||
* @param padLength The length to pad the message to.
|
||||
* @returns A padded block.
|
||||
*/
|
||||
function pad (message: number[], padLength: number): number[] {
|
||||
function pad(message: number[], padLength: number): number[] {
|
||||
// If there is no message, return a fully padded block.
|
||||
if (message.length === 0) {
|
||||
return Array(16)
|
||||
return Array(16);
|
||||
}
|
||||
|
||||
// Return a copy of the message if no padding is required.
|
||||
if (message.length === padLength) {
|
||||
return Array.from(message)
|
||||
return Array.from(message);
|
||||
}
|
||||
|
||||
// Pad a copy of the message to padLength.
|
||||
const ret = Array.from(message)
|
||||
const requiredPadding = padLength - message.length - 1
|
||||
ret.push(...Array(requiredPadding))
|
||||
const ret = Array.from(message);
|
||||
const requiredPadding = padLength - message.length - 1;
|
||||
ret.push(...Array(requiredPadding));
|
||||
|
||||
// Set the final byte of the padded blocked to the length of the original message.
|
||||
ret[padLength - 1] = message.length
|
||||
ret[padLength - 1] = message.length;
|
||||
|
||||
return ret
|
||||
return ret;
|
||||
}
|
||||
|
||||
/**
|
||||
@@ -66,10 +66,10 @@ function pad (message: number[], padLength: number): number[] {
|
||||
* @param state The state from which the key stream will be generated.
|
||||
* @returns The key stream.
|
||||
*/
|
||||
function g (state: number[]): number[] {
|
||||
return state.map(x => {
|
||||
return (x >> 1) ^ (x & 0x80) ^ ((x & 0x01) << 7)
|
||||
})
|
||||
function g(state: number[]): number[] {
|
||||
return state.map((x) => {
|
||||
return (x >> 1) ^ (x & 0x80) ^ ((x & 0x01) << 7);
|
||||
});
|
||||
}
|
||||
|
||||
/**
|
||||
@@ -78,17 +78,19 @@ function g (state: number[]): number[] {
|
||||
* @param mBlock An M block.
|
||||
* @returns [S', C] where S' = M ⊕ S and C = M ⊕ G(S)
|
||||
*/
|
||||
function rho (state: number[], mBlock: number[]): [number[], number[]] {
|
||||
function rho(state: number[], mBlock: number[]): [number[], number[]] {
|
||||
// G(S)
|
||||
const gOfS = g(state)
|
||||
const gOfS = g(state);
|
||||
|
||||
// C = M ⊕ G(S)
|
||||
const cBlock = Array.from(Array(16).keys()).map(i => mBlock[i] ^ gOfS[i])
|
||||
const cBlock = Array.from(Array(16).keys()).map((i) => mBlock[i] ^ gOfS[i]);
|
||||
|
||||
// S' = M ⊕ S
|
||||
const nextState = Array.from(Array(16).keys()).map(i => state[i] ^ mBlock[i])
|
||||
const nextState = Array.from(Array(16).keys()).map(
|
||||
(i) => state[i] ^ mBlock[i],
|
||||
);
|
||||
|
||||
return [nextState, cBlock]
|
||||
return [nextState, cBlock];
|
||||
}
|
||||
|
||||
/**
|
||||
@@ -97,16 +99,18 @@ function rho (state: number[], mBlock: number[]): [number[], number[]] {
|
||||
* @param cBlock A C block.
|
||||
* @returns [S', M] where M = C ⊕ G(S) and S' = C ⊕ M.
|
||||
*/
|
||||
function inverseRoh (state: number[], cBlock: number[]): [number[], number[]] {
|
||||
function inverseRoh(state: number[], cBlock: number[]): [number[], number[]] {
|
||||
// G(S)
|
||||
const gOfS = g(state)
|
||||
const gOfS = g(state);
|
||||
|
||||
// M = C ⊕ G(S)
|
||||
const mBlock = Array.from(Array(16).keys()).map(i => cBlock[i] ^ gOfS[i])
|
||||
const mBlock = Array.from(Array(16).keys()).map((i) => cBlock[i] ^ gOfS[i]);
|
||||
|
||||
// S' = S ⊕ M
|
||||
const nextState = Array.from(Array(16).keys()).map(i => state[i] ^ mBlock[i])
|
||||
return [nextState, mBlock]
|
||||
const nextState = Array.from(Array(16).keys()).map(
|
||||
(i) => state[i] ^ mBlock[i],
|
||||
);
|
||||
return [nextState, mBlock];
|
||||
}
|
||||
|
||||
/**
|
||||
@@ -114,33 +118,33 @@ function inverseRoh (state: number[], cBlock: number[]): [number[], number[]] {
|
||||
* @param counter The old counter.
|
||||
* @returns An incremented counter.
|
||||
*/
|
||||
function increaseCounter (counter: number[]): number[] {
|
||||
const fb0 = counter[6] >> 7
|
||||
function increaseCounter(counter: number[]): number[] {
|
||||
const fb0 = counter[6] >> 7;
|
||||
|
||||
counter[6] = (counter[6] << 1) | (counter[5] >> 7)
|
||||
counter[5] = (counter[5] << 1) | (counter[4] >> 7)
|
||||
counter[4] = (counter[4] << 1) | (counter[3] >> 7)
|
||||
counter[3] = (counter[3] << 1) | (counter[2] >> 7)
|
||||
counter[2] = (counter[2] << 1) | (counter[1] >> 7)
|
||||
counter[1] = (counter[1] << 1) | (counter[0] >> 7)
|
||||
counter[6] = (counter[6] << 1) | (counter[5] >> 7);
|
||||
counter[5] = (counter[5] << 1) | (counter[4] >> 7);
|
||||
counter[4] = (counter[4] << 1) | (counter[3] >> 7);
|
||||
counter[3] = (counter[3] << 1) | (counter[2] >> 7);
|
||||
counter[2] = (counter[2] << 1) | (counter[1] >> 7);
|
||||
counter[1] = (counter[1] << 1) | (counter[0] >> 7);
|
||||
|
||||
if (fb0 === 1) {
|
||||
counter[0] = (counter[0] << 1) ^ 0x95
|
||||
counter[0] = (counter[0] << 1) ^ 0x95;
|
||||
} else {
|
||||
counter[0] = (counter[0] << 1)
|
||||
counter[0] = counter[0] << 1;
|
||||
}
|
||||
|
||||
return counter
|
||||
return counter;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns a reset counter.
|
||||
* @returns A reset counter.
|
||||
*/
|
||||
function resetCounter (): number[] {
|
||||
const counter = Array(COUNTER_LENGTH)
|
||||
counter[0] = 1
|
||||
return counter
|
||||
function resetCounter(): number[] {
|
||||
const counter = Array(COUNTER_LENGTH);
|
||||
counter[0] = 1;
|
||||
return counter;
|
||||
}
|
||||
|
||||
/**
|
||||
@@ -149,26 +153,32 @@ function resetCounter (): number[] {
|
||||
* @param parsedMessageLength The length of the parsed message.
|
||||
* @param parsedAssociatedDataLength The length of the parsed associated data.
|
||||
*/
|
||||
function calculateDomainSeparation (combinedData: number[][], parsedMessageLength: number, parsedAssociatedDataLength: number): number {
|
||||
let domainSeparation = 16
|
||||
function calculateDomainSeparation(
|
||||
combinedData: number[][],
|
||||
parsedMessageLength: number,
|
||||
parsedAssociatedDataLength: number,
|
||||
): number {
|
||||
let domainSeparation = 16;
|
||||
|
||||
if (combinedData[parsedAssociatedDataLength].length < 16) {
|
||||
domainSeparation = domainSeparation ^ 2
|
||||
domainSeparation = domainSeparation ^ 2;
|
||||
}
|
||||
|
||||
if (combinedData[parsedAssociatedDataLength + parsedMessageLength].length < 16) {
|
||||
domainSeparation = domainSeparation ^ 1
|
||||
if (
|
||||
combinedData[parsedAssociatedDataLength + parsedMessageLength].length < 16
|
||||
) {
|
||||
domainSeparation = domainSeparation ^ 1;
|
||||
}
|
||||
|
||||
if (parsedAssociatedDataLength % 2 === 0) {
|
||||
domainSeparation = domainSeparation ^ 8
|
||||
domainSeparation = domainSeparation ^ 8;
|
||||
}
|
||||
|
||||
if (parsedMessageLength % 2 === 0) {
|
||||
domainSeparation = domainSeparation ^ 4
|
||||
domainSeparation = domainSeparation ^ 4;
|
||||
}
|
||||
|
||||
return domainSeparation
|
||||
return domainSeparation;
|
||||
}
|
||||
|
||||
/**
|
||||
@@ -180,93 +190,124 @@ function calculateDomainSeparation (combinedData: number[][], parsedMessageLengt
|
||||
* @param key A 128 bit encryption key.
|
||||
* @returns The encrypted ciphertext.
|
||||
*/
|
||||
export function cryptoAeadEncrypt (message: number[], associatedData: number[], nonce: number[], key: number[]): number[] {
|
||||
export function cryptoAeadEncrypt(
|
||||
message: number[],
|
||||
associatedData: number[],
|
||||
nonce: number[],
|
||||
key: number[],
|
||||
): number[] {
|
||||
// Buffer for ciphertext.
|
||||
const ciphertext = []
|
||||
const ciphertext = [];
|
||||
|
||||
// Reset state and counter.
|
||||
let state = Array(16)
|
||||
let counter = resetCounter()
|
||||
let state = Array(16);
|
||||
let counter = resetCounter();
|
||||
|
||||
// Carve message and associated data into blocks.
|
||||
const messageBlocks = parse(message, 16)
|
||||
const messageBlockCount = messageBlocks.length - 1
|
||||
const messageBlocks = parse(message, 16);
|
||||
const messageBlockCount = messageBlocks.length - 1;
|
||||
|
||||
const associatedDataBlocks = parse(associatedData, 16)
|
||||
const associatedDataBlockCount = associatedDataBlocks.length - 1
|
||||
const associatedDataBlocks = parse(associatedData, 16);
|
||||
const associatedDataBlockCount = associatedDataBlocks.length - 1;
|
||||
|
||||
// Concatenate the message and associated data blocks, excluding each array's first element.
|
||||
const combinedDataBlocks = associatedDataBlocks.slice(1).concat(messageBlocks.slice(1))
|
||||
const combinedDataBlocks = associatedDataBlocks
|
||||
.slice(1)
|
||||
.concat(messageBlocks.slice(1));
|
||||
|
||||
// Insert empty array at position 0.
|
||||
combinedDataBlocks.splice(0, 0, [])
|
||||
combinedDataBlocks.splice(0, 0, []);
|
||||
|
||||
// Calculate domain separation for final encryption stage.
|
||||
const domainSeparation = calculateDomainSeparation(combinedDataBlocks, messageBlockCount, associatedDataBlockCount)
|
||||
const domainSeparation = calculateDomainSeparation(
|
||||
combinedDataBlocks,
|
||||
messageBlockCount,
|
||||
associatedDataBlockCount,
|
||||
);
|
||||
|
||||
// Pad combined data.
|
||||
combinedDataBlocks[associatedDataBlockCount] = pad(combinedDataBlocks[associatedDataBlockCount], 16)
|
||||
combinedDataBlocks[associatedDataBlockCount + messageBlockCount] = pad(combinedDataBlocks[associatedDataBlockCount + messageBlockCount], 16)
|
||||
combinedDataBlocks[associatedDataBlockCount] = pad(
|
||||
combinedDataBlocks[associatedDataBlockCount],
|
||||
16,
|
||||
);
|
||||
combinedDataBlocks[associatedDataBlockCount + messageBlockCount] = pad(
|
||||
combinedDataBlocks[associatedDataBlockCount + messageBlockCount],
|
||||
16,
|
||||
);
|
||||
|
||||
// Process the associated data.
|
||||
let x = 8
|
||||
for (let i = 1; i < Math.floor((associatedDataBlockCount + messageBlockCount) / 2) + 1; i++) {
|
||||
[state] = rho(state, combinedDataBlocks[2 * i - 1])
|
||||
counter = increaseCounter(counter)
|
||||
let x = 8;
|
||||
for (
|
||||
let i = 1;
|
||||
i < Math.floor((associatedDataBlockCount + messageBlockCount) / 2) + 1;
|
||||
i++
|
||||
) {
|
||||
[state] = rho(state, combinedDataBlocks[2 * i - 1]);
|
||||
counter = increaseCounter(counter);
|
||||
if (i === Math.floor(associatedDataBlockCount / 2) + 1) {
|
||||
x = x ^ 4
|
||||
x = x ^ 4;
|
||||
}
|
||||
state = skinnyEncrypt(state, tweakeyEncode(counter, x, combinedDataBlocks[2 * i], key))
|
||||
counter = increaseCounter(counter)
|
||||
state = skinnyEncrypt(
|
||||
state,
|
||||
tweakeyEncode(counter, x, combinedDataBlocks[2 * i], key),
|
||||
);
|
||||
counter = increaseCounter(counter);
|
||||
}
|
||||
|
||||
if (associatedDataBlockCount % 2 === messageBlockCount % 2) {
|
||||
[state] = rho(state, Array(16))
|
||||
[state] = rho(state, Array(16));
|
||||
} else {
|
||||
[state] = rho(state, combinedDataBlocks[associatedDataBlockCount + messageBlockCount])
|
||||
counter = increaseCounter(counter)
|
||||
[state] = rho(
|
||||
state,
|
||||
combinedDataBlocks[associatedDataBlockCount + messageBlockCount],
|
||||
);
|
||||
counter = increaseCounter(counter);
|
||||
}
|
||||
|
||||
// Generate authentication tag.
|
||||
const [,authenticationTag] = rho(skinnyEncrypt(state, tweakeyEncode(counter, domainSeparation, nonce, key)), Array(16))
|
||||
const [, authenticationTag] = rho(
|
||||
skinnyEncrypt(state, tweakeyEncode(counter, domainSeparation, nonce, key)),
|
||||
Array(16),
|
||||
);
|
||||
|
||||
if (message.length === 0) {
|
||||
return authenticationTag
|
||||
return authenticationTag;
|
||||
}
|
||||
|
||||
state = Array.from(authenticationTag)
|
||||
counter = resetCounter()
|
||||
state = Array.from(authenticationTag);
|
||||
counter = resetCounter();
|
||||
|
||||
// Encrypt the message.
|
||||
const originalFinalMessageBlockLength = messageBlocks[messageBlockCount].length
|
||||
messageBlocks[messageBlockCount] = pad(messageBlocks[messageBlockCount], 16)
|
||||
const originalFinalMessageBlockLength =
|
||||
messageBlocks[messageBlockCount].length;
|
||||
messageBlocks[messageBlockCount] = pad(messageBlocks[messageBlockCount], 16);
|
||||
|
||||
for (let i = 1; i < messageBlockCount + 1; i++) {
|
||||
state = skinnyEncrypt(state, tweakeyEncode(counter, 4, nonce, key))
|
||||
state = skinnyEncrypt(state, tweakeyEncode(counter, 4, nonce, key));
|
||||
|
||||
let cBlock
|
||||
[state, cBlock] = rho(state, messageBlocks[i])
|
||||
counter = increaseCounter(counter)
|
||||
let cBlock;
|
||||
[state, cBlock] = rho(state, messageBlocks[i]);
|
||||
counter = increaseCounter(counter);
|
||||
|
||||
if (i < messageBlockCount) {
|
||||
ciphertext.push(...cBlock)
|
||||
ciphertext.push(...cBlock);
|
||||
} else {
|
||||
ciphertext.push(...cBlock.slice(0, originalFinalMessageBlockLength))
|
||||
ciphertext.push(...cBlock.slice(0, originalFinalMessageBlockLength));
|
||||
}
|
||||
}
|
||||
|
||||
// Store the authentication tag in the final 16 bytes of the ciphertext.
|
||||
ciphertext.push(...authenticationTag)
|
||||
ciphertext.push(...authenticationTag);
|
||||
|
||||
return ciphertext
|
||||
return ciphertext;
|
||||
}
|
||||
|
||||
/**
|
||||
* Return interface for decrypting a message.
|
||||
*/
|
||||
export interface DecryptResult {
|
||||
success: boolean
|
||||
plaintext: number[]
|
||||
success: boolean;
|
||||
plaintext: number[];
|
||||
}
|
||||
|
||||
/**
|
||||
@@ -278,106 +319,140 @@ export interface DecryptResult {
|
||||
* @param key The key.
|
||||
* @returns The decrypted plaintext.
|
||||
*/
|
||||
export function cryptoAeadDecrypt (ciphertext: number[], associatedData: number[], nonce: number[], key: number[]): DecryptResult {
|
||||
export function cryptoAeadDecrypt(
|
||||
ciphertext: number[],
|
||||
associatedData: number[],
|
||||
nonce: number[],
|
||||
key: number[],
|
||||
): DecryptResult {
|
||||
// Buffer for decrypted message.
|
||||
const cleartext = []
|
||||
const cleartext = [];
|
||||
|
||||
// The authentication tag is represented by the final 16 bytes of the ciphertext.
|
||||
const authenticationTag = ciphertext.slice(-16)
|
||||
ciphertext.length -= 16
|
||||
const authenticationTag = ciphertext.slice(-16);
|
||||
ciphertext.length -= 16;
|
||||
|
||||
// Reset state and counter.
|
||||
let state = Array(16)
|
||||
let counter = resetCounter()
|
||||
let state = Array(16);
|
||||
let counter = resetCounter();
|
||||
|
||||
if (ciphertext.length !== 0) {
|
||||
// Combine the ciphertext.
|
||||
state = Array.from(authenticationTag)
|
||||
const ciphertextBlocks = parse(ciphertext, 16)
|
||||
const ciphertextBlockCount = ciphertextBlocks.length - 1
|
||||
const finalCiphertextBlockLength = ciphertextBlocks[ciphertextBlockCount].length
|
||||
ciphertextBlocks[ciphertextBlockCount] = pad(ciphertextBlocks[ciphertextBlockCount], 16)
|
||||
state = Array.from(authenticationTag);
|
||||
const ciphertextBlocks = parse(ciphertext, 16);
|
||||
const ciphertextBlockCount = ciphertextBlocks.length - 1;
|
||||
const finalCiphertextBlockLength =
|
||||
ciphertextBlocks[ciphertextBlockCount].length;
|
||||
ciphertextBlocks[ciphertextBlockCount] = pad(
|
||||
ciphertextBlocks[ciphertextBlockCount],
|
||||
16,
|
||||
);
|
||||
|
||||
for (let i = 1; i < ciphertextBlockCount + 1; i++) {
|
||||
state = skinnyEncrypt(state, tweakeyEncode(counter, 4, nonce, key))
|
||||
state = skinnyEncrypt(state, tweakeyEncode(counter, 4, nonce, key));
|
||||
|
||||
let mBlock
|
||||
[state, mBlock] = inverseRoh(state, ciphertextBlocks[i])
|
||||
counter = increaseCounter(counter)
|
||||
let mBlock;
|
||||
[state, mBlock] = inverseRoh(state, ciphertextBlocks[i]);
|
||||
counter = increaseCounter(counter);
|
||||
|
||||
if (i < ciphertextBlockCount) {
|
||||
cleartext.push(...mBlock)
|
||||
cleartext.push(...mBlock);
|
||||
} else {
|
||||
cleartext.push(...mBlock.slice(0, finalCiphertextBlockLength))
|
||||
cleartext.push(...mBlock.slice(0, finalCiphertextBlockLength));
|
||||
}
|
||||
}
|
||||
} else {
|
||||
state = []
|
||||
state = [];
|
||||
}
|
||||
|
||||
// Reset state and counter.
|
||||
state = Array(16)
|
||||
counter = resetCounter()
|
||||
state = Array(16);
|
||||
counter = resetCounter();
|
||||
|
||||
// Carve the message and associated data into blocks.
|
||||
const messageBlocks = parse(cleartext, 16)
|
||||
const messageBlockLength = messageBlocks.length - 1
|
||||
const messageBlocks = parse(cleartext, 16);
|
||||
const messageBlockLength = messageBlocks.length - 1;
|
||||
|
||||
const associatedDataBlocks = parse(associatedData, 16)
|
||||
const associatedDataBlockCount = associatedDataBlocks.length - 1
|
||||
const associatedDataBlocks = parse(associatedData, 16);
|
||||
const associatedDataBlockCount = associatedDataBlocks.length - 1;
|
||||
|
||||
// Concatenate the message and associated data blocks, excluding each array's first element.
|
||||
const combinedData = associatedDataBlocks.slice(1).concat(messageBlocks.slice(1))
|
||||
const combinedData = associatedDataBlocks
|
||||
.slice(1)
|
||||
.concat(messageBlocks.slice(1));
|
||||
|
||||
// Insert empty array at position 0.
|
||||
combinedData.splice(0, 0, [])
|
||||
combinedData.splice(0, 0, []);
|
||||
|
||||
// Calculate domain separation for final decryption stage.
|
||||
const domainSeparation = calculateDomainSeparation(combinedData, messageBlockLength, associatedDataBlockCount)
|
||||
const domainSeparation = calculateDomainSeparation(
|
||||
combinedData,
|
||||
messageBlockLength,
|
||||
associatedDataBlockCount,
|
||||
);
|
||||
|
||||
// Pad combined data.
|
||||
combinedData[associatedDataBlockCount] = pad(combinedData[associatedDataBlockCount], 16)
|
||||
combinedData[associatedDataBlockCount + messageBlockLength] = pad(combinedData[associatedDataBlockCount + messageBlockLength], 16)
|
||||
combinedData[associatedDataBlockCount] = pad(
|
||||
combinedData[associatedDataBlockCount],
|
||||
16,
|
||||
);
|
||||
combinedData[associatedDataBlockCount + messageBlockLength] = pad(
|
||||
combinedData[associatedDataBlockCount + messageBlockLength],
|
||||
16,
|
||||
);
|
||||
|
||||
// Verifiy associated data.
|
||||
let x = 8
|
||||
for (let i = 1; i < Math.floor((associatedDataBlockCount + messageBlockLength) / 2) + 1; i++) {
|
||||
[state] = rho(state, combinedData[2 * i - 1])
|
||||
counter = increaseCounter(counter)
|
||||
let x = 8;
|
||||
for (
|
||||
let i = 1;
|
||||
i < Math.floor((associatedDataBlockCount + messageBlockLength) / 2) + 1;
|
||||
i++
|
||||
) {
|
||||
[state] = rho(state, combinedData[2 * i - 1]);
|
||||
counter = increaseCounter(counter);
|
||||
if (i === Math.floor(associatedDataBlockCount / 2) + 1) {
|
||||
x = x ^ 4
|
||||
x = x ^ 4;
|
||||
}
|
||||
state = skinnyEncrypt(state, tweakeyEncode(counter, x, combinedData[2 * i], key))
|
||||
counter = increaseCounter(counter)
|
||||
state = skinnyEncrypt(
|
||||
state,
|
||||
tweakeyEncode(counter, x, combinedData[2 * i], key),
|
||||
);
|
||||
counter = increaseCounter(counter);
|
||||
}
|
||||
|
||||
if (associatedDataBlockCount % 2 === messageBlockLength % 2) {
|
||||
[state] = rho(state, Array(16))
|
||||
[state] = rho(state, Array(16));
|
||||
} else {
|
||||
[state] = rho(state, combinedData[associatedDataBlockCount + messageBlockLength])
|
||||
counter = increaseCounter(counter)
|
||||
[state] = rho(
|
||||
state,
|
||||
combinedData[associatedDataBlockCount + messageBlockLength],
|
||||
);
|
||||
counter = increaseCounter(counter);
|
||||
}
|
||||
|
||||
// Calculate authentication tag.
|
||||
const [,computedTag] = rho(skinnyEncrypt(state, tweakeyEncode(counter, domainSeparation, nonce, key)), Array(16))
|
||||
const [, computedTag] = rho(
|
||||
skinnyEncrypt(state, tweakeyEncode(counter, domainSeparation, nonce, key)),
|
||||
Array(16),
|
||||
);
|
||||
|
||||
// Validate authentication tag.
|
||||
let compare = 0
|
||||
let compare = 0;
|
||||
for (let i = 0; i < 16; i++) {
|
||||
compare |= (authenticationTag[i] ^ computedTag[i])
|
||||
compare |= authenticationTag[i] ^ computedTag[i];
|
||||
}
|
||||
|
||||
if (compare !== 0) {
|
||||
// Authentication failed.
|
||||
return {
|
||||
success: false,
|
||||
plaintext: []
|
||||
}
|
||||
plaintext: [],
|
||||
};
|
||||
} else {
|
||||
// Decrypted successfully.
|
||||
return {
|
||||
success: true,
|
||||
plaintext: cleartext
|
||||
}
|
||||
plaintext: cleartext,
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
@@ -1,4 +1,13 @@
|
||||
import { MEMBER_MASK, NB_ROUNDS, TWEAK_LENGTH, PT, LFSR_8_TK2, LFSR_8_TK3, S8, C } from './constants'
|
||||
import {
|
||||
MEMBER_MASK,
|
||||
NB_ROUNDS,
|
||||
TWEAK_LENGTH,
|
||||
PT,
|
||||
LFSR_8_TK2,
|
||||
LFSR_8_TK3,
|
||||
S8,
|
||||
C,
|
||||
} from "./constants";
|
||||
|
||||
/**
|
||||
* Create a tweakey based on the specified domain separation, nonce, key and current counter state.
|
||||
@@ -8,8 +17,13 @@ import { MEMBER_MASK, NB_ROUNDS, TWEAK_LENGTH, PT, LFSR_8_TK2, LFSR_8_TK3, S8, C
|
||||
* @param key The encryption key.
|
||||
* @returns The tweakey.
|
||||
*/
|
||||
export function tweakeyEncode (counter: number[], domainSeparation: number, nonce: number[], key: number[]): number[] {
|
||||
return counter.concat([domainSeparation ^ MEMBER_MASK], Array(8), nonce, key)
|
||||
export function tweakeyEncode(
|
||||
counter: number[],
|
||||
domainSeparation: number,
|
||||
nonce: number[],
|
||||
key: number[],
|
||||
): number[] {
|
||||
return counter.concat([domainSeparation ^ MEMBER_MASK], Array(8), nonce, key);
|
||||
}
|
||||
|
||||
/**
|
||||
@@ -18,48 +32,68 @@ export function tweakeyEncode (counter: number[], domainSeparation: number, nonc
|
||||
* @param tweakey The tweakey to use for encryption.
|
||||
* @returns The ciphertext.
|
||||
*/
|
||||
export function skinnyEncrypt (plaintext: number[], tweakey: number[]): number[] {
|
||||
const tk = Array(NB_ROUNDS + 1).fill(Array(TWEAK_LENGTH).fill(0))
|
||||
export function skinnyEncrypt(
|
||||
plaintext: number[],
|
||||
tweakey: number[],
|
||||
): number[] {
|
||||
const tk = Array(NB_ROUNDS + 1).fill(Array(TWEAK_LENGTH).fill(0));
|
||||
|
||||
tk[0] = Array.from(Array(TWEAK_LENGTH).keys()).map(i => tweakey[i])
|
||||
tk[0] = Array.from(Array(TWEAK_LENGTH).keys()).map((i) => tweakey[i]);
|
||||
|
||||
for (let i = 0; i < NB_ROUNDS - 1; i++) {
|
||||
tk[i + 1] = Array.from(tk[i])
|
||||
tk[i + 1] = Array.from(tk[i]);
|
||||
|
||||
for (let j = 0; j < TWEAK_LENGTH; j++) {
|
||||
tk[i + 1][j] = tk[i][j - j % 16 + PT[j % 16]]
|
||||
tk[i + 1][j] = tk[i][j - (j % 16) + PT[j % 16]];
|
||||
}
|
||||
|
||||
for (let j = 0; j < 8; j++) {
|
||||
tk[i + 1][j + 16] = LFSR_8_TK2[tk[i + 1][j + 16]]
|
||||
tk[i + 1][j + 32] = LFSR_8_TK3[tk[i + 1][j + 32]]
|
||||
tk[i + 1][j + 16] = LFSR_8_TK2[tk[i + 1][j + 16]];
|
||||
tk[i + 1][j + 32] = LFSR_8_TK3[tk[i + 1][j + 32]];
|
||||
}
|
||||
}
|
||||
|
||||
let s = Array.from(Array(16).keys()).map(i => plaintext[i])
|
||||
let s = Array.from(Array(16).keys()).map((i) => plaintext[i]);
|
||||
for (let i = 0; i < NB_ROUNDS; i++) {
|
||||
for (let j = 0; j < 16; j++) {
|
||||
s[j] = S8[s[j]]
|
||||
s[j] = S8[s[j]];
|
||||
}
|
||||
|
||||
s[0] ^= (C[i] & 0xf)
|
||||
s[4] ^= (C[i] >> 4) & 0xf
|
||||
s[8] ^= 0x2
|
||||
s[0] ^= C[i] & 0xf;
|
||||
s[4] ^= (C[i] >> 4) & 0xf;
|
||||
s[8] ^= 0x2;
|
||||
|
||||
for (let j = 0; j < 8; j++) {
|
||||
s[j] ^= tk[i][j] ^ tk[i][j + 16] ^ tk[i][j + 32]
|
||||
s[j] ^= tk[i][j] ^ tk[i][j + 16] ^ tk[i][j + 32];
|
||||
}
|
||||
|
||||
s = [s[0], s[1], s[2], s[3], s[7], s[4], s[5], s[6], s[10], s[11], s[8], s[9], s[13], s[14], s[15], s[12]]
|
||||
s = [
|
||||
s[0],
|
||||
s[1],
|
||||
s[2],
|
||||
s[3],
|
||||
s[7],
|
||||
s[4],
|
||||
s[5],
|
||||
s[6],
|
||||
s[10],
|
||||
s[11],
|
||||
s[8],
|
||||
s[9],
|
||||
s[13],
|
||||
s[14],
|
||||
s[15],
|
||||
s[12],
|
||||
];
|
||||
|
||||
for (let j = 0; j < 4; j++) {
|
||||
const tmp = Array.from(s)
|
||||
s[j] = tmp[j] ^ tmp[8 + j] ^ tmp[12 + j]
|
||||
s[4 + j] = tmp[j]
|
||||
s[8 + j] = tmp[4 + j] ^ tmp[8 + j]
|
||||
s[12 + j] = tmp[0 + j] ^ tmp[8 + j]
|
||||
const tmp = Array.from(s);
|
||||
s[j] = tmp[j] ^ tmp[8 + j] ^ tmp[12 + j];
|
||||
s[4 + j] = tmp[j];
|
||||
s[8 + j] = tmp[4 + j] ^ tmp[8 + j];
|
||||
s[12 + j] = tmp[0 + j] ^ tmp[8 + j];
|
||||
}
|
||||
}
|
||||
|
||||
return Array.from(Array(16).keys()).map(i => s[i])
|
||||
return Array.from(Array(16).keys()).map((i) => s[i]);
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user