Edit File: _sha512.py
""" This code was Ported from CPython's sha512module.c """ import struct SHA_BLOCKSIZE = 128 SHA_DIGESTSIZE = 64 def new_shaobject(): return { 'digest': [0]*8, 'count_lo': 0, 'count_hi': 0, 'data': [0]* SHA_BLOCKSIZE, 'local': 0, 'digestsize': 0 } ROR64 = lambda x, y: (((x & 0xffffffffffffffff) >> (y & 63)) | (x << (64 - (y & 63)))) & 0xffffffffffffffff Ch = lambda x, y, z: (z ^ (x & (y ^ z))) Maj = lambda x, y, z: (((x | y) & z) | (x & y)) S = lambda x, n: ROR64(x, n) R = lambda x, n: (x & 0xffffffffffffffff) >> n Sigma0 = lambda x: (S(x, 28) ^ S(x, 34) ^ S(x, 39)) Sigma1 = lambda x: (S(x, 14) ^ S(x, 18) ^ S(x, 41)) Gamma0 = lambda x: (S(x, 1) ^ S(x, 8) ^ R(x, 7)) Gamma1 = lambda x: (S(x, 19) ^ S(x, 61) ^ R(x, 6)) def sha_transform(sha_info): W = [] d = sha_info['data'] for i in xrange(0,16): W.append( (d[8*i]<<56) + (d[8*i+1]<<48) + (d[8*i+2]<<40) + (d[8*i+3]<<32) + (d[8*i+4]<<24) + (d[8*i+5]<<16) + (d[8*i+6]<<8) + d[8*i+7]) for i in xrange(16,80): W.append( (Gamma1(W[i - 2]) + W[i - 7] + Gamma0(W[i - 15]) + W[i - 16]) & 0xffffffffffffffff ) ss = sha_info['digest'][:] def RND(a,b,c,d,e,f,g,h,i,ki): t0 = (h + Sigma1(e) + Ch(e, f, g) + ki + W[i]) & 0xffffffffffffffff t1 = (Sigma0(a) + Maj(a, b, c)) & 0xffffffffffffffff d = (d + t0) & 0xffffffffffffffff h = (t0 + t1) & 0xffffffffffffffff return d & 0xffffffffffffffff, h & 0xffffffffffffffff ss[3], ss[7] = RND(ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],0,0x428a2f98d728ae22) ss[2], ss[6] = RND(ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],1,0x7137449123ef65cd) ss[1], ss[5] = RND(ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],2,0xb5c0fbcfec4d3b2f) ss[0], ss[4] = RND(ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],3,0xe9b5dba58189dbbc) ss[7], ss[3] = RND(ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],4,0x3956c25bf348b538) ss[6], ss[2] = RND(ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],5,0x59f111f1b605d019) ss[5], ss[1] = RND(ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],6,0x923f82a4af194f9b) ss[4], ss[0] = RND(ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],7,0xab1c5ed5da6d8118) ss[3], ss[7] = RND(ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],8,0xd807aa98a3030242) ss[2], ss[6] = RND(ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],9,0x12835b0145706fbe) ss[1], ss[5] = RND(ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],10,0x243185be4ee4b28c) ss[0], ss[4] = RND(ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],11,0x550c7dc3d5ffb4e2) ss[7], ss[3] = RND(ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],12,0x72be5d74f27b896f) ss[6], ss[2] = RND(ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],13,0x80deb1fe3b1696b1) ss[5], ss[1] = RND(ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],14,0x9bdc06a725c71235) ss[4], ss[0] = RND(ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],15,0xc19bf174cf692694) ss[3], ss[7] = RND(ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],16,0xe49b69c19ef14ad2) ss[2], ss[6] = RND(ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],17,0xefbe4786384f25e3) ss[1], ss[5] = RND(ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],18,0x0fc19dc68b8cd5b5) ss[0], ss[4] = RND(ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],19,0x240ca1cc77ac9c65) ss[7], ss[3] = RND(ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],20,0x2de92c6f592b0275) ss[6], ss[2] = RND(ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],21,0x4a7484aa6ea6e483) ss[5], ss[1] = RND(ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],22,0x5cb0a9dcbd41fbd4) ss[4], ss[0] = RND(ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],23,0x76f988da831153b5) ss[3], ss[7] = RND(ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],24,0x983e5152ee66dfab) ss[2], ss[6] = RND(ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],25,0xa831c66d2db43210) ss[1], ss[5] = RND(ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],26,0xb00327c898fb213f) ss[0], ss[4] = RND(ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],27,0xbf597fc7beef0ee4) ss[7], ss[3] = RND(ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],28,0xc6e00bf33da88fc2) ss[6], ss[2] = RND(ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],29,0xd5a79147930aa725) ss[5], ss[1] = RND(ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],30,0x06ca6351e003826f) ss[4], ss[0] = RND(ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],31,0x142929670a0e6e70) ss[3], ss[7] = RND(ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],32,0x27b70a8546d22ffc) ss[2], ss[6] = RND(ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],33,0x2e1b21385c26c926) ss[1], ss[5] = RND(ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],34,0x4d2c6dfc5ac42aed) ss[0], ss[4] = RND(ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],35,0x53380d139d95b3df) ss[7], ss[3] = RND(ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],36,0x650a73548baf63de) ss[6], ss[2] = RND(ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],37,0x766a0abb3c77b2a8) ss[5], ss[1] = RND(ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],38,0x81c2c92e47edaee6) ss[4], ss[0] = RND(ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],39,0x92722c851482353b) ss[3], ss[7] = RND(ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],40,0xa2bfe8a14cf10364) ss[2], ss[6] = RND(ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],41,0xa81a664bbc423001) ss[1], ss[5] = RND(ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],42,0xc24b8b70d0f89791) ss[0], ss[4] = RND(ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],43,0xc76c51a30654be30) ss[7], ss[3] = RND(ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],44,0xd192e819d6ef5218) ss[6], ss[2] = RND(ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],45,0xd69906245565a910) ss[5], ss[1] = RND(ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],46,0xf40e35855771202a) ss[4], ss[0] = RND(ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],47,0x106aa07032bbd1b8) ss[3], ss[7] = RND(ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],48,0x19a4c116b8d2d0c8) ss[2], ss[6] = RND(ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],49,0x1e376c085141ab53) ss[1], ss[5] = RND(ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],50,0x2748774cdf8eeb99) ss[0], ss[4] = RND(ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],51,0x34b0bcb5e19b48a8) ss[7], ss[3] = RND(ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],52,0x391c0cb3c5c95a63) ss[6], ss[2] = RND(ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],53,0x4ed8aa4ae3418acb) ss[5], ss[1] = RND(ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],54,0x5b9cca4f7763e373) ss[4], ss[0] = RND(ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],55,0x682e6ff3d6b2b8a3) ss[3], ss[7] = RND(ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],56,0x748f82ee5defb2fc) ss[2], ss[6] = RND(ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],57,0x78a5636f43172f60) ss[1], ss[5] = RND(ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],58,0x84c87814a1f0ab72) ss[0], ss[4] = RND(ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],59,0x8cc702081a6439ec) ss[7], ss[3] = RND(ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],60,0x90befffa23631e28) ss[6], ss[2] = RND(ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],61,0xa4506cebde82bde9) ss[5], ss[1] = RND(ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],62,0xbef9a3f7b2c67915) ss[4], ss[0] = RND(ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],63,0xc67178f2e372532b) ss[3], ss[7] = RND(ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],64,0xca273eceea26619c) ss[2], ss[6] = RND(ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],65,0xd186b8c721c0c207) ss[1], ss[5] = RND(ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],66,0xeada7dd6cde0eb1e) ss[0], ss[4] = RND(ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],67,0xf57d4f7fee6ed178) ss[7], ss[3] = RND(ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],68,0x06f067aa72176fba) ss[6], ss[2] = RND(ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],69,0x0a637dc5a2c898a6) ss[5], ss[1] = RND(ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],70,0x113f9804bef90dae) ss[4], ss[0] = RND(ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],71,0x1b710b35131c471b) ss[3], ss[7] = RND(ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],72,0x28db77f523047d84) ss[2], ss[6] = RND(ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],73,0x32caab7b40c72493) ss[1], ss[5] = RND(ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],ss[5],74,0x3c9ebe0a15c9bebc) ss[0], ss[4] = RND(ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],ss[4],75,0x431d67c49c100d4c) ss[7], ss[3] = RND(ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],ss[3],76,0x4cc5d4becb3e42b6) ss[6], ss[2] = RND(ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],ss[2],77,0x597f299cfc657e2a) ss[5], ss[1] = RND(ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],ss[1],78,0x5fcb6fab3ad6faec) ss[4], ss[0] = RND(ss[1],ss[2],ss[3],ss[4],ss[5],ss[6],ss[7],ss[0],79,0x6c44198c4a475817) dig = [] for i, x in enumerate(sha_info['digest']): dig.append( (x + ss[i]) & 0xffffffffffffffff ) sha_info['digest'] = dig def sha_init(): sha_info = new_shaobject() sha_info['digest'] = [ 0x6a09e667f3bcc908, 0xbb67ae8584caa73b, 0x3c6ef372fe94f82b, 0xa54ff53a5f1d36f1, 0x510e527fade682d1, 0x9b05688c2b3e6c1f, 0x1f83d9abfb41bd6b, 0x5be0cd19137e2179] sha_info['count_lo'] = 0 sha_info['count_hi'] = 0 sha_info['local'] = 0 sha_info['digestsize'] = 64 return sha_info def sha384_init(): sha_info = new_shaobject() sha_info['digest'] = [ 0xcbbb9d5dc1059ed8, 0x629a292a367cd507, 0x9159015a3070dd17, 0x152fecd8f70e5939, 0x67332667ffc00b31, 0x8eb44a8768581511, 0xdb0c2e0d64f98fa7, 0x47b5481dbefa4fa4] sha_info['count_lo'] = 0 sha_info['count_hi'] = 0 sha_info['local'] = 0 sha_info['digestsize'] = 48 return sha_info def getbuf(s): if isinstance(s, str): return s elif isinstance(s, unicode): return str(s) else: return buffer(s) def sha_update(sha_info, buffer): count = len(buffer) buffer_idx = 0 clo = (sha_info['count_lo'] + (count << 3)) & 0xffffffff if clo < sha_info['count_lo']: sha_info['count_hi'] += 1 sha_info['count_lo'] = clo sha_info['count_hi'] += (count >> 29) if sha_info['local']: i = SHA_BLOCKSIZE - sha_info['local'] if i > count: i = count # copy buffer for x in enumerate(buffer[buffer_idx:buffer_idx+i]): sha_info['data'][sha_info['local']+x[0]] = struct.unpack('B', x[1])[0] count -= i buffer_idx += i sha_info['local'] += i if sha_info['local'] == SHA_BLOCKSIZE: sha_transform(sha_info) sha_info['local'] = 0 else: return while count >= SHA_BLOCKSIZE: # copy buffer sha_info['data'] = [struct.unpack('B',c)[0] for c in buffer[buffer_idx:buffer_idx + SHA_BLOCKSIZE]] count -= SHA_BLOCKSIZE buffer_idx += SHA_BLOCKSIZE sha_transform(sha_info) # copy buffer pos = sha_info['local'] sha_info['data'][pos:pos+count] = [struct.unpack('B',c)[0] for c in buffer[buffer_idx:buffer_idx + count]] sha_info['local'] = count def sha_final(sha_info): lo_bit_count = sha_info['count_lo'] hi_bit_count = sha_info['count_hi'] count = (lo_bit_count >> 3) & 0x7f sha_info['data'][count] = 0x80; count += 1 if count > SHA_BLOCKSIZE - 16: # zero the bytes in data after the count sha_info['data'] = sha_info['data'][:count] + ([0] * (SHA_BLOCKSIZE - count)) sha_transform(sha_info) # zero bytes in data sha_info['data'] = [0] * SHA_BLOCKSIZE else: sha_info['data'] = sha_info['data'][:count] + ([0] * (SHA_BLOCKSIZE - count)) sha_info['data'][112] = 0; sha_info['data'][113] = 0; sha_info['data'][114] = 0; sha_info['data'][115] = 0; sha_info['data'][116] = 0; sha_info['data'][117] = 0; sha_info['data'][118] = 0; sha_info['data'][119] = 0; sha_info['data'][120] = (hi_bit_count >> 24) & 0xff sha_info['data'][121] = (hi_bit_count >> 16) & 0xff sha_info['data'][122] = (hi_bit_count >> 8) & 0xff sha_info['data'][123] = (hi_bit_count >> 0) & 0xff sha_info['data'][124] = (lo_bit_count >> 24) & 0xff sha_info['data'][125] = (lo_bit_count >> 16) & 0xff sha_info['data'][126] = (lo_bit_count >> 8) & 0xff sha_info['data'][127] = (lo_bit_count >> 0) & 0xff sha_transform(sha_info) dig = [] for i in sha_info['digest']: dig.extend([ ((i>>56) & 0xff), ((i>>48) & 0xff), ((i>>40) & 0xff), ((i>>32) & 0xff), ((i>>24) & 0xff), ((i>>16) & 0xff), ((i>>8) & 0xff), (i & 0xff) ]) return ''.join([chr(i) for i in dig]) class sha512(object): digest_size = digestsize = SHA_DIGESTSIZE block_size = SHA_BLOCKSIZE def __init__(self, s=None): self._sha = sha_init() if s: sha_update(self._sha, getbuf(s)) def update(self, s): sha_update(self._sha, getbuf(s)) def digest(self): return sha_final(self._sha.copy())[:self._sha['digestsize']] def hexdigest(self): return ''.join(['%.2x' % ord(i) for i in self.digest()]) def copy(self): new = sha512.__new__(sha512) new._sha = self._sha.copy() return new class sha384(sha512): digest_size = digestsize = 48 def __init__(self, s=None): self._sha = sha384_init() if s: sha_update(self._sha, getbuf(s)) def copy(self): new = sha384.__new__(sha384) new._sha = self._sha.copy() return new if __name__ == "__main__": a_str = "just a test string" assert sha512().hexdigest() == "cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e" assert sha512(a_str).hexdigest() == "68be4c6664af867dd1d01c8d77e963d87d77b702400c8fabae355a41b8927a5a5533a7f1c28509bbd65c5f3ac716f33be271fbda0ca018b71a84708c9fae8a53" assert sha512(a_str*7).hexdigest() == "3233acdbfcfff9bff9fc72401d31dbffa62bd24e9ec846f0578d647da73258d9f0879f7fde01fe2cc6516af3f343807fdef79e23d696c923d79931db46bf1819" s = sha512(a_str) s.update(a_str) assert s.hexdigest() == "341aeb668730bbb48127d5531115f3c39d12cb9586a6ca770898398aff2411087cfe0b570689adf328cddeb1f00803acce6737a19f310b53bbdb0320828f75bb"