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/*-----------------------------------------------------------------
AES package for ReconfigureIO implementation
Methods for encrypting/decrypting single AES blocks of 16bytes
------------------------------------------------------------------*/
package aes
// BlkState is a block of 16 bytes
type BlkState [16]uint8
/*--------------------------------------------
Galois field multiplication functions
---------------------------------------------*/
// gfMult2 is galois field multiply by 2
func gfMult2(n uint8) uint8 {
rot := (n<<1 | n>>7)
mask0 := rot & 0x01
return (rot ^ ((mask0 << 1) | (mask0 << 3) | (mask0 << 4)))
}
// gfMult3 is galois field multiply by 3
func gfMult3(n uint8) uint8 {
rot := (n<<1 | n>>7)
mask0 := (rot & 0x01)
return ((rot ^ ((mask0 << 1) | (mask0 << 3) | (mask0 << 4))) ^ n)
}
// galois field multiply by 4
func gfMult4(n uint8) uint8 {
return gfMult2(gfMult2(n))
}
// galois field multiply by 8
func gfMult8(n uint8) uint8 {
return gfMult2(gfMult4(n))
}
// galois field multiply by 9
func gfMult9(n uint8) uint8 {
return gfMult8(n) ^ n
}
// galois field multiply by 11
func gfMult11(n uint8) uint8 {
return gfMult8(n) ^ gfMult2(n) ^ n
}
// galois field multiply by 13
func gfMult13(n uint8) uint8 {
return gfMult8(n) ^ gfMult4(n) ^ n
}
// galois field multiply by 14
func gfMult14(n uint8) uint8 {
return gfMult8(n) ^ gfMult4(n) ^ gfMult2(n)
}
/*--------------------------------------------
Base functions
---------------------------------------------*/
// encSubBytes is byte substitution for ECB encryption using SBOX
func encSubBytes(blk BlkState) BlkState {
var blkOut BlkState
sbox := [256]uint8{
0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16}
blkOut[0] = sbox[blk[0]]
blkOut[1] = sbox[blk[1]]
blkOut[2] = sbox[blk[2]]
blkOut[3] = sbox[blk[3]]
blkOut[4] = sbox[blk[4]]
blkOut[5] = sbox[blk[5]]
blkOut[6] = sbox[blk[6]]
blkOut[7] = sbox[blk[7]]
blkOut[8] = sbox[blk[8]]
blkOut[9] = sbox[blk[9]]
blkOut[10] = sbox[blk[10]]
blkOut[11] = sbox[blk[11]]
blkOut[12] = sbox[blk[12]]
blkOut[13] = sbox[blk[13]]
blkOut[14] = sbox[blk[14]]
blkOut[15] = sbox[blk[15]]
return blkOut
}
// decSubBytes is byte substitution for ECB decryption using SBOX
func decSubBytes(blk BlkState) BlkState {
var blkOut BlkState
sbox := [256]uint8{
0x52, 0x09, 0x6A, 0xD5, 0x30, 0x36, 0xA5, 0x38, 0xBF, 0x40, 0xA3, 0x9E, 0x81, 0xF3, 0xD7, 0xFB,
0x7C, 0xE3, 0x39, 0x82, 0x9B, 0x2F, 0xFF, 0x87, 0x34, 0x8E, 0x43, 0x44, 0xC4, 0xDE, 0xE9, 0xCB,
0x54, 0x7B, 0x94, 0x32, 0xA6, 0xC2, 0x23, 0x3D, 0xEE, 0x4C, 0x95, 0x0B, 0x42, 0xFA, 0xC3, 0x4E,
0x08, 0x2E, 0xA1, 0x66, 0x28, 0xD9, 0x24, 0xB2, 0x76, 0x5B, 0xA2, 0x49, 0x6D, 0x8B, 0xD1, 0x25,
0x72, 0xF8, 0xF6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xD4, 0xA4, 0x5C, 0xCC, 0x5D, 0x65, 0xB6, 0x92,
0x6C, 0x70, 0x48, 0x50, 0xFD, 0xED, 0xB9, 0xDA, 0x5E, 0x15, 0x46, 0x57, 0xA7, 0x8D, 0x9D, 0x84,
0x90, 0xD8, 0xAB, 0x00, 0x8C, 0xBC, 0xD3, 0x0A, 0xF7, 0xE4, 0x58, 0x05, 0xB8, 0xB3, 0x45, 0x06,
0xD0, 0x2C, 0x1E, 0x8F, 0xCA, 0x3F, 0x0F, 0x02, 0xC1, 0xAF, 0xBD, 0x03, 0x01, 0x13, 0x8A, 0x6B,
0x3A, 0x91, 0x11, 0x41, 0x4F, 0x67, 0xDC, 0xEA, 0x97, 0xF2, 0xCF, 0xCE, 0xF0, 0xB4, 0xE6, 0x73,
0x96, 0xAC, 0x74, 0x22, 0xE7, 0xAD, 0x35, 0x85, 0xE2, 0xF9, 0x37, 0xE8, 0x1C, 0x75, 0xDF, 0x6E,
0x47, 0xF1, 0x1A, 0x71, 0x1D, 0x29, 0xC5, 0x89, 0x6F, 0xB7, 0x62, 0x0E, 0xAA, 0x18, 0xBE, 0x1B,
0xFC, 0x56, 0x3E, 0x4B, 0xC6, 0xD2, 0x79, 0x20, 0x9A, 0xDB, 0xC0, 0xFE, 0x78, 0xCD, 0x5A, 0xF4,
0x1F, 0xDD, 0xA8, 0x33, 0x88, 0x07, 0xC7, 0x31, 0xB1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xEC, 0x5F,
0x60, 0x51, 0x7F, 0xA9, 0x19, 0xB5, 0x4A, 0x0D, 0x2D, 0xE5, 0x7A, 0x9F, 0x93, 0xC9, 0x9C, 0xEF,
0xA0, 0xE0, 0x3B, 0x4D, 0xAE, 0x2A, 0xF5, 0xB0, 0xC8, 0xEB, 0xBB, 0x3C, 0x83, 0x53, 0x99, 0x61,
0x17, 0x2B, 0x04, 0x7E, 0xBA, 0x77, 0xD6, 0x26, 0xE1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0C, 0x7D}
blkOut[0] = sbox[blk[0]]
blkOut[1] = sbox[blk[1]]
blkOut[2] = sbox[blk[2]]
blkOut[3] = sbox[blk[3]]
blkOut[4] = sbox[blk[4]]
blkOut[5] = sbox[blk[5]]
blkOut[6] = sbox[blk[6]]
blkOut[7] = sbox[blk[7]]
blkOut[8] = sbox[blk[8]]
blkOut[9] = sbox[blk[9]]
blkOut[10] = sbox[blk[10]]
blkOut[11] = sbox[blk[11]]
blkOut[12] = sbox[blk[12]]
blkOut[13] = sbox[blk[13]]
blkOut[14] = sbox[blk[14]]
blkOut[15] = sbox[blk[15]]
return blkOut
}
// encShiftRow is a circular shift of the state vector
func encShiftRow(blk BlkState) BlkState {
var blkOut BlkState
// row 0
blkOut[0] = blk[0]
blkOut[4] = blk[4]
blkOut[8] = blk[8]
blkOut[12] = blk[12]
// row 1
blkOut[1] = blk[5]
blkOut[5] = blk[9]
blkOut[9] = blk[13]
blkOut[13] = blk[1]
// row 2
blkOut[2] = blk[10]
blkOut[6] = blk[14]
blkOut[10] = blk[2]
blkOut[14] = blk[6]
// row 3
blkOut[3] = blk[15]
blkOut[7] = blk[3]
blkOut[11] = blk[7]
blkOut[15] = blk[11]
return blkOut
}
// decShiftRow is a circular shift of the state vector
func decShiftRow(blk BlkState) BlkState {
var blkOut BlkState
// row 0
blkOut[0] = blk[0]
blkOut[4] = blk[4]
blkOut[8] = blk[8]
blkOut[12] = blk[12]
// row 1
blkOut[1] = blk[13]
blkOut[5] = blk[1]
blkOut[9] = blk[5]
blkOut[13] = blk[9]
// row 2
blkOut[2] = blk[10]
blkOut[6] = blk[14]
blkOut[10] = blk[2]
blkOut[14] = blk[6]
// row 3
blkOut[3] = blk[7]
blkOut[7] = blk[11]
blkOut[11] = blk[15]
blkOut[15] = blk[3]
return blkOut
}
// EncMixCols is mix columns for encryption and includes the Galois field multiplication
func EncMixCols(blk BlkState) BlkState {
var blkOut BlkState
blkOut[0] = gfMult2(blk[0]) ^ gfMult3(blk[1]) ^ blk[2] ^ blk[3]
blkOut[1] = blk[0] ^ gfMult2(blk[1]) ^ gfMult3(blk[2]) ^ blk[3]
blkOut[2] = blk[0] ^ blk[1] ^ gfMult2(blk[2]) ^ gfMult3(blk[3])
blkOut[3] = gfMult3(blk[0]) ^ blk[1] ^ blk[2] ^ gfMult2(blk[3])
blkOut[4] = gfMult2(blk[4]) ^ gfMult3(blk[5]) ^ blk[6] ^ blk[7]
blkOut[5] = blk[4] ^ gfMult2(blk[5]) ^ gfMult3(blk[6]) ^ blk[7]
blkOut[6] = blk[4] ^ blk[5] ^ gfMult2(blk[6]) ^ gfMult3(blk[7])
blkOut[7] = gfMult3(blk[4]) ^ blk[5] ^ blk[6] ^ gfMult2(blk[7])
blkOut[8] = gfMult2(blk[8]) ^ gfMult3(blk[9]) ^ blk[10] ^ blk[11]
blkOut[9] = blk[8] ^ gfMult2(blk[9]) ^ gfMult3(blk[10]) ^ blk[11]
blkOut[10] = blk[8] ^ blk[9] ^ gfMult2(blk[10]) ^ gfMult3(blk[11])
blkOut[11] = gfMult3(blk[8]) ^ blk[9] ^ blk[10] ^ gfMult2(blk[11])
blkOut[12] = gfMult2(blk[12]) ^ gfMult3(blk[13]) ^ blk[14] ^ blk[15]
blkOut[13] = blk[12] ^ gfMult2(blk[13]) ^ gfMult3(blk[14]) ^ blk[15]
blkOut[14] = blk[12] ^ blk[13] ^ gfMult2(blk[14]) ^ gfMult3(blk[15])
blkOut[15] = gfMult3(blk[12]) ^ blk[13] ^ blk[14] ^ gfMult2(blk[15])
return blkOut
}
// decMixCols is decrypt MixCols, includes the Galois field multiplication
func decMixCols(blk BlkState) BlkState {
var blkOut BlkState
blkOut[0] = gfMult14(blk[0]) ^ gfMult11(blk[1]) ^ gfMult13(blk[2]) ^ gfMult9(blk[3])
blkOut[1] = gfMult9(blk[0]) ^ gfMult14(blk[1]) ^ gfMult11(blk[2]) ^ gfMult13(blk[3])
blkOut[2] = gfMult13(blk[0]) ^ gfMult9(blk[1]) ^ gfMult14(blk[2]) ^ gfMult11(blk[3])
blkOut[3] = gfMult11(blk[0]) ^ gfMult13(blk[1]) ^ gfMult9(blk[2]) ^ gfMult14(blk[3])
blkOut[4] = gfMult14(blk[4]) ^ gfMult11(blk[5]) ^ gfMult13(blk[6]) ^ gfMult9(blk[7])
blkOut[5] = gfMult9(blk[4]) ^ gfMult14(blk[5]) ^ gfMult11(blk[6]) ^ gfMult13(blk[7])
blkOut[6] = gfMult13(blk[4]) ^ gfMult9(blk[5]) ^ gfMult14(blk[6]) ^ gfMult11(blk[7])
blkOut[7] = gfMult11(blk[4]) ^ gfMult13(blk[5]) ^ gfMult9(blk[6]) ^ gfMult14(blk[7])
blkOut[8] = gfMult14(blk[8]) ^ gfMult11(blk[9]) ^ gfMult13(blk[10]) ^ gfMult9(blk[11])
blkOut[9] = gfMult9(blk[8]) ^ gfMult14(blk[9]) ^ gfMult11(blk[10]) ^ gfMult13(blk[11])
blkOut[10] = gfMult13(blk[8]) ^ gfMult9(blk[9]) ^ gfMult14(blk[10]) ^ gfMult11(blk[11])
blkOut[11] = gfMult11(blk[8]) ^ gfMult13(blk[9]) ^ gfMult9(blk[10]) ^ gfMult14(blk[11])
blkOut[12] = gfMult14(blk[12]) ^ gfMult11(blk[13]) ^ gfMult13(blk[14]) ^ gfMult9(blk[15])
blkOut[13] = gfMult9(blk[12]) ^ gfMult14(blk[13]) ^ gfMult11(blk[14]) ^ gfMult13(blk[15])
blkOut[14] = gfMult13(blk[12]) ^ gfMult9(blk[13]) ^ gfMult14(blk[14]) ^ gfMult11(blk[15])
blkOut[15] = gfMult11(blk[12]) ^ gfMult13(blk[13]) ^ gfMult9(blk[14]) ^ gfMult14(blk[15])
return blkOut
}
/*--------------------------------------------
128bit Key Expansion
---------------------------------------------*/
// RndKeyGen generates a new round Key
func RndKeyGen(rndKeyIn BlkState, rConAddr uint8) BlkState {
var rndKey BlkState
sbox := [256]uint8{
0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16}
rConTable := BlkState{0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80,
0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x01}
// bytes 0:3
rndKey[0] = sbox[rndKeyIn[13]] ^ rndKeyIn[0] ^ rConTable[rConAddr]
rndKey[1] = sbox[rndKeyIn[14]] ^ rndKeyIn[1]
rndKey[2] = sbox[rndKeyIn[15]] ^ rndKeyIn[2]
rndKey[3] = sbox[rndKeyIn[12]] ^ rndKeyIn[3]
// bytes 4:7
rndKey[4] = rndKey[0] ^ rndKeyIn[4]
rndKey[5] = rndKey[1] ^ rndKeyIn[5]
rndKey[6] = rndKey[2] ^ rndKeyIn[6]
rndKey[7] = rndKey[3] ^ rndKeyIn[7]
// bytes 8:11
rndKey[8] = rndKey[4] ^ rndKeyIn[8]
rndKey[9] = rndKey[5] ^ rndKeyIn[9]
rndKey[10] = rndKey[6] ^ rndKeyIn[10]
rndKey[11] = rndKey[7] ^ rndKeyIn[11]
// bytes 12:15
rndKey[12] = rndKey[8] ^ rndKeyIn[12]
rndKey[13] = rndKey[9] ^ rndKeyIn[13]
rndKey[14] = rndKey[10] ^ rndKeyIn[14]
rndKey[15] = rndKey[11] ^ rndKeyIn[15]
return rndKey
}
// full 128bit key expansion
func ExpKey128(key [16]uint8) [11]BlkState {
var expandedKey [11]BlkState
expandedKey[0] = key
for i := 1; i < 11; i++ {
expandedKey[i] = RndKeyGen(expandedKey[i-1], uint8(i-1))
}
return expandedKey
}
/*--------------------------------------------
Rounds
---------------------------------------------*/
// addRound is an XOR of current block with current round key
// used in both encrypt & decrypt
func addRound(blk, rndKey BlkState) BlkState {
var blkOut BlkState
blkOut[0] = rndKey[0] ^ blk[0]
blkOut[1] = rndKey[1] ^ blk[1]
blkOut[2] = rndKey[2] ^ blk[2]
blkOut[3] = rndKey[3] ^ blk[3]
blkOut[4] = rndKey[4] ^ blk[4]
blkOut[5] = rndKey[5] ^ blk[5]
blkOut[6] = rndKey[6] ^ blk[6]
blkOut[7] = rndKey[7] ^ blk[7]
blkOut[8] = rndKey[8] ^ blk[8]
blkOut[9] = rndKey[9] ^ blk[9]
blkOut[10] = rndKey[10] ^ blk[10]
blkOut[11] = rndKey[11] ^ blk[11]
blkOut[12] = rndKey[12] ^ blk[12]
blkOut[13] = rndKey[13] ^ blk[13]
blkOut[14] = rndKey[14] ^ blk[14]
blkOut[15] = rndKey[15] ^ blk[15]
return blkOut
}
// encInterRnd is intermediate round of ECB encryption
func encInterRnd(blk, rndKey BlkState) BlkState {
// encryption
blk0 := encSubBytes(blk)
blk1 := encShiftRow(blk0)
blk2 := EncMixCols(blk1)
blk3 := addRound(blk2, rndKey)
return blk3
}
// decInterRnd is intermediate round of ECB decryption
func decInterRnd(blk, rndKey BlkState) BlkState {
blk0 := decShiftRow(blk)
blk1 := decSubBytes(blk0)
blk2 := addRound(blk1, rndKey)
blk3 := decMixCols(blk2)
return blk3
}
// encLastRnd is last round of ECB encryption
func encLastRnd(blk, rndKey BlkState) BlkState {
blk0 := encSubBytes(blk)
blk1 := encShiftRow(blk0)
blk2 := addRound(blk1, rndKey)
return blk2
}
// decLastRnd is last round of ECB decryption
func decLastRnd(blk, rndKey BlkState) BlkState {
blk0 := decShiftRow(blk)
blk1 := decSubBytes(blk0)
blk2 := addRound(blk1, rndKey)
return blk2
}
/*--------------------------------------------
AES128 ECB Encryption method
---------------------------------------------*/
// Aes128EncEcb decrypts one 16byte block using the ECB mode
// Also performs 128bit key expansion
func (blk BlkState) Aes128EncEcb(expandedKey [11]BlkState) BlkState {
// round 0
blk = addRound(blk, expandedKey[0])
for i := uint8(1); i < 10; i++ {
blk = encInterRnd(blk, expandedKey[i])
}
// round 10
blk = encLastRnd(blk, expandedKey[10])
return blk
}
/*--------------------------------------------
AES128 ECB Decryption method
---------------------------------------------*/
// Aes128DecEcb decrypts one 16byte block using the ECB mode and
// a previously expanded 128bit key.
func (blk BlkState) Aes128DecEcb(expandedKey [11]BlkState) BlkState {
// round 0
blk = addRound(blk, expandedKey[10])
for i := uint8(9); i > 0; i-- {
blk = decInterRnd(blk, expandedKey[i])
}
// round 10
blk = decLastRnd(blk, expandedKey[0])
return blk
}
/*--------------------------------------------
AES256 ECB Encryption method
---------------------------------------------*/
/*--------------------------------------------
AES256 ECB Decryption method
---------------------------------------------*/
/*--------------------------------------------
AES128 CBC Encryption method
---------------------------------------------*/
/*--------------------------------------------
AES128 CBC Decryption method
---------------------------------------------*/
/*--------------------------------------------
AES256 CBC Encryption method
---------------------------------------------*/
/*--------------------------------------------
AES256 CBC Decryption method
---------------------------------------------*/
/*--------------------------------------------
AES128 CTR Encryption method
---------------------------------------------*/
/*--------------------------------------------
AES128 CTR Decryption method
---------------------------------------------*/
/*--------------------------------------------
AES256 CTR Encryption method
---------------------------------------------*/
/*--------------------------------------------
AES256 CTR Decryption method
---------------------------------------------*/