constants.jl

"""SHA initial hash values and constants

Reference:
- SHA-1, SHA2: FIPS 180-4: https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.180-4.pdf
"""

# Hash constant words K for SHA1
const K1 = UInt32[
    0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xca62c1d6
]

# Initial hash value H for SHA1
const SHA1_initial_hash_value = UInt32[
    0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0
]



# Hash constant words K for SHA-256:
const K256 = (
    0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
    0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
    0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
    0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
    0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
    0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
    0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
    0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
    0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
    0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
    0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
    0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
    0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
    0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
    0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
    0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
)

# Initial hash value H for SHA-224:
const SHA2_224_initial_hash_value = UInt32[
    0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939,
    0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4
]


const SHA2_256_initial_hash_value = UInt32[
    0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
    0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19
]

# Hash constant words K for SHA-384 and SHA-512:
const K512 = (
    0x428a2f98d728ae22, 0x7137449123ef65cd,
    0xb5c0fbcfec4d3b2f, 0xe9b5dba58189dbbc,
    0x3956c25bf348b538, 0x59f111f1b605d019,
    0x923f82a4af194f9b, 0xab1c5ed5da6d8118,
    0xd807aa98a3030242, 0x12835b0145706fbe,
    0x243185be4ee4b28c, 0x550c7dc3d5ffb4e2,
    0x72be5d74f27b896f, 0x80deb1fe3b1696b1,
    0x9bdc06a725c71235, 0xc19bf174cf692694,
    0xe49b69c19ef14ad2, 0xefbe4786384f25e3,
    0x0fc19dc68b8cd5b5, 0x240ca1cc77ac9c65,
    0x2de92c6f592b0275, 0x4a7484aa6ea6e483,
    0x5cb0a9dcbd41fbd4, 0x76f988da831153b5,
    0x983e5152ee66dfab, 0xa831c66d2db43210,
    0xb00327c898fb213f, 0xbf597fc7beef0ee4,
    0xc6e00bf33da88fc2, 0xd5a79147930aa725,
    0x06ca6351e003826f, 0x142929670a0e6e70,
    0x27b70a8546d22ffc, 0x2e1b21385c26c926,
    0x4d2c6dfc5ac42aed, 0x53380d139d95b3df,
    0x650a73548baf63de, 0x766a0abb3c77b2a8,
    0x81c2c92e47edaee6, 0x92722c851482353b,
    0xa2bfe8a14cf10364, 0xa81a664bbc423001,
    0xc24b8b70d0f89791, 0xc76c51a30654be30,
    0xd192e819d6ef5218, 0xd69906245565a910,
    0xf40e35855771202a, 0x106aa07032bbd1b8,
    0x19a4c116b8d2d0c8, 0x1e376c085141ab53,
    0x2748774cdf8eeb99, 0x34b0bcb5e19b48a8,
    0x391c0cb3c5c95a63, 0x4ed8aa4ae3418acb,
    0x5b9cca4f7763e373, 0x682e6ff3d6b2b8a3,
    0x748f82ee5defb2fc, 0x78a5636f43172f60,
    0x84c87814a1f0ab72, 0x8cc702081a6439ec,
    0x90befffa23631e28, 0xa4506cebde82bde9,
    0xbef9a3f7b2c67915, 0xc67178f2e372532b,
    0xca273eceea26619c, 0xd186b8c721c0c207,
    0xeada7dd6cde0eb1e, 0xf57d4f7fee6ed178,
    0x06f067aa72176fba, 0x0a637dc5a2c898a6,
    0x113f9804bef90dae, 0x1b710b35131c471b,
    0x28db77f523047d84, 0x32caab7b40c72493,
    0x3c9ebe0a15c9bebc, 0x431d67c49c100d4c,
    0x4cc5d4becb3e42b6, 0x597f299cfc657e2a,
    0x5fcb6fab3ad6faec, 0x6c44198c4a475817
)

# Initial hash value H for SHA-384
const SHA2_384_initial_hash_value = UInt64[
    0xcbbb9d5dc1059ed8, 0x629a292a367cd507,
    0x9159015a3070dd17, 0x152fecd8f70e5939,
    0x67332667ffc00b31, 0x8eb44a8768581511,
    0xdb0c2e0d64f98fa7, 0x47b5481dbefa4fa4
]

# Initial hash value H for SHA-512
const SHA2_512_initial_hash_value = UInt64[
    0x6a09e667f3bcc908, 0xbb67ae8584caa73b,
    0x3c6ef372fe94f82b, 0xa54ff53a5f1d36f1,
    0x510e527fade682d1, 0x9b05688c2b3e6c1f,
    0x1f83d9abfb41bd6b, 0x5be0cd19137e2179
]

# Initial hash value H for SHA-512/224
const SHA2_512_224_initial_hash_value = UInt64[
    0x8C3D37C819544DA2, 0x73E1996689DCD4D6,
    0x1DFAB7AE32FF9C82, 0x679DD514582F9FCF,
    0x0F6D2B697BD44DA8, 0x77E36F7304C48942,
    0x3F9D85A86A1D36C8, 0x1112E6AD91D692A1
]

# Initial hash value H for SHA-512/256
const SHA2_512_256_initial_hash_value = UInt64[
    0x22312194FC2BF72C, 0x9F555FA3C84C64C2,
    0x2393B86B6F53B151, 0x963877195940EABD,
    0x96283EE2A88EFFE3, 0xBE5E1E2553863992,
    0x2B0199FC2C85B8AA, 0x0EB72DDC81C52CA2
]


# Round constants for SHA3 rounds
const SHA3_ROUND_CONSTS = UInt64[
    0x0000000000000001, 0x0000000000008082, 0x800000000000808a,
    0x8000000080008000, 0x000000000000808b, 0x0000000080000001,
    0x8000000080008081, 0x8000000000008009, 0x000000000000008a,
    0x0000000000000088, 0x0000000080008009, 0x000000008000000a,
    0x000000008000808b, 0x800000000000008b, 0x8000000000008089,
    0x8000000000008003, 0x8000000000008002, 0x8000000000000080,
    0x000000000000800a, 0x800000008000000a, 0x8000000080008081,
    0x8000000000008080, 0x0000000080000001, 0x8000000080008008
]

# Rotation constants for SHA3 rounds
const SHA3_ROTC = UInt64[
    1,  3,  6,  10, 15, 21, 28, 36, 45, 55, 2,  14,
    27, 41, 56, 8,  25, 43, 62, 18, 39, 61, 20, 44
]

# Permutation indices for SHA3 rounds (+1'ed so as to work with julia's 1-based indexing)
const SHA3_PILN = Int[
    11, 8,  12, 18, 19, 4, 6,  17, 9,  22, 25, 5,
    16, 24, 20, 14, 13, 3, 21, 15, 23, 10,  7,  2
]