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Code Editor : sha256block_386.s
// Copyright 2013 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. // SHA256 block routine. See sha256block.go for Go equivalent. // // The algorithm is detailed in FIPS 180-4: // // https://csrc.nist.gov/publications/fips/fips180-4/fips-180-4.pdf // // Wt = Mt; for 0 <= t <= 15 // Wt = SIGMA1(Wt-2) + SIGMA0(Wt-15) + Wt-16; for 16 <= t <= 63 // // a = H0 // b = H1 // c = H2 // d = H3 // e = H4 // f = H5 // g = H6 // h = H7 // // for t = 0 to 63 { // T1 = h + BIGSIGMA1(e) + Ch(e,f,g) + Kt + Wt // T2 = BIGSIGMA0(a) + Maj(a,b,c) // h = g // g = f // f = e // e = d + T1 // d = c // c = b // b = a // a = T1 + T2 // } // // H0 = a + H0 // H1 = b + H1 // H2 = c + H2 // H3 = d + H3 // H4 = e + H4 // H5 = f + H5 // H6 = g + H6 // H7 = h + H7 // Wt = Mt; for 0 <= t <= 15 #define MSGSCHEDULE0(index) \ MOVL (index*4)(SI), AX; \ BSWAPL AX; \ MOVL AX, (index*4)(BP) // Wt = SIGMA1(Wt-2) + Wt-7 + SIGMA0(Wt-15) + Wt-16; for 16 <= t <= 63 // SIGMA0(x) = ROTR(7,x) XOR ROTR(18,x) XOR SHR(3,x) // SIGMA1(x) = ROTR(17,x) XOR ROTR(19,x) XOR SHR(10,x) #define MSGSCHEDULE1(index) \ MOVL ((index-2)*4)(BP), AX; \ MOVL AX, CX; \ RORL $17, AX; \ MOVL CX, DX; \ RORL $19, CX; \ SHRL $10, DX; \ MOVL ((index-15)*4)(BP), BX; \ XORL CX, AX; \ MOVL BX, CX; \ XORL DX, AX; \ RORL $7, BX; \ MOVL CX, DX; \ SHRL $3, DX; \ RORL $18, CX; \ ADDL ((index-7)*4)(BP), AX; \ XORL CX, BX; \ XORL DX, BX; \ ADDL ((index-16)*4)(BP), BX; \ ADDL BX, AX; \ MOVL AX, ((index)*4)(BP) // Calculate T1 in AX - uses AX, BX, CX and DX registers. // Wt is passed in AX. // T1 = h + BIGSIGMA1(e) + Ch(e, f, g) + Kt + Wt // BIGSIGMA1(x) = ROTR(6,x) XOR ROTR(11,x) XOR ROTR(25,x) // Ch(x, y, z) = (x AND y) XOR (NOT x AND z) #define SHA256T1(const, e, f, g, h) \ MOVL (h*4)(DI), BX; \ ADDL AX, BX; \ MOVL (e*4)(DI), AX; \ ADDL $const, BX; \ MOVL (e*4)(DI), CX; \ RORL $6, AX; \ MOVL (e*4)(DI), DX; \ RORL $11, CX; \ XORL CX, AX; \ MOVL (e*4)(DI), CX; \ RORL $25, DX; \ ANDL (f*4)(DI), CX; \ XORL AX, DX; \ MOVL (e*4)(DI), AX; \ NOTL AX; \ ADDL DX, BX; \ ANDL (g*4)(DI), AX; \ XORL CX, AX; \ ADDL BX, AX // Calculate T2 in BX - uses AX, BX, CX and DX registers. // T2 = BIGSIGMA0(a) + Maj(a, b, c) // BIGSIGMA0(x) = ROTR(2,x) XOR ROTR(13,x) XOR ROTR(22,x) // Maj(x, y, z) = (x AND y) XOR (x AND z) XOR (y AND z) #define SHA256T2(a, b, c) \ MOVL (a*4)(DI), AX; \ MOVL (c*4)(DI), BX; \ RORL $2, AX; \ MOVL (a*4)(DI), DX; \ ANDL (b*4)(DI), BX; \ RORL $13, DX; \ MOVL (a*4)(DI), CX; \ ANDL (c*4)(DI), CX; \ XORL DX, AX; \ XORL CX, BX; \ MOVL (a*4)(DI), DX; \ MOVL (b*4)(DI), CX; \ RORL $22, DX; \ ANDL (a*4)(DI), CX; \ XORL CX, BX; \ XORL DX, AX; \ ADDL AX, BX // Calculate T1 and T2, then e = d + T1 and a = T1 + T2. // The values for e and a are stored in d and h, ready for rotation. #define SHA256ROUND(index, const, a, b, c, d, e, f, g, h) \ SHA256T1(const, e, f, g, h); \ MOVL AX, 292(SP); \ SHA256T2(a, b, c); \ MOVL 292(SP), AX; \ ADDL AX, BX; \ ADDL AX, (d*4)(DI); \ MOVL BX, (h*4)(DI) #define SHA256ROUND0(index, const, a, b, c, d, e, f, g, h) \ MSGSCHEDULE0(index); \ SHA256ROUND(index, const, a, b, c, d, e, f, g, h) #define SHA256ROUND1(index, const, a, b, c, d, e, f, g, h) \ MSGSCHEDULE1(index); \ SHA256ROUND(index, const, a, b, c, d, e, f, g, h) TEXT ·block(SB),0,$296-16 MOVL p_base+4(FP), SI MOVL p_len+8(FP), DX SHRL $6, DX SHLL $6, DX LEAL (SI)(DX*1), DI MOVL DI, 288(SP) CMPL SI, DI JEQ end LEAL 256(SP), DI // variables MOVL dig+0(FP), BP MOVL (0*4)(BP), AX // a = H0 MOVL AX, (0*4)(DI) MOVL (1*4)(BP), BX // b = H1 MOVL BX, (1*4)(DI) MOVL (2*4)(BP), CX // c = H2 MOVL CX, (2*4)(DI) MOVL (3*4)(BP), DX // d = H3 MOVL DX, (3*4)(DI) MOVL (4*4)(BP), AX // e = H4 MOVL AX, (4*4)(DI) MOVL (5*4)(BP), BX // f = H5 MOVL BX, (5*4)(DI) MOVL (6*4)(BP), CX // g = H6 MOVL CX, (6*4)(DI) MOVL (7*4)(BP), DX // h = H7 MOVL DX, (7*4)(DI) loop: MOVL SP, BP // message schedule SHA256ROUND0(0, 0x428a2f98, 0, 1, 2, 3, 4, 5, 6, 7) SHA256ROUND0(1, 0x71374491, 7, 0, 1, 2, 3, 4, 5, 6) SHA256ROUND0(2, 0xb5c0fbcf, 6, 7, 0, 1, 2, 3, 4, 5) SHA256ROUND0(3, 0xe9b5dba5, 5, 6, 7, 0, 1, 2, 3, 4) SHA256ROUND0(4, 0x3956c25b, 4, 5, 6, 7, 0, 1, 2, 3) SHA256ROUND0(5, 0x59f111f1, 3, 4, 5, 6, 7, 0, 1, 2) SHA256ROUND0(6, 0x923f82a4, 2, 3, 4, 5, 6, 7, 0, 1) SHA256ROUND0(7, 0xab1c5ed5, 1, 2, 3, 4, 5, 6, 7, 0) SHA256ROUND0(8, 0xd807aa98, 0, 1, 2, 3, 4, 5, 6, 7) SHA256ROUND0(9, 0x12835b01, 7, 0, 1, 2, 3, 4, 5, 6) SHA256ROUND0(10, 0x243185be, 6, 7, 0, 1, 2, 3, 4, 5) SHA256ROUND0(11, 0x550c7dc3, 5, 6, 7, 0, 1, 2, 3, 4) SHA256ROUND0(12, 0x72be5d74, 4, 5, 6, 7, 0, 1, 2, 3) SHA256ROUND0(13, 0x80deb1fe, 3, 4, 5, 6, 7, 0, 1, 2) SHA256ROUND0(14, 0x9bdc06a7, 2, 3, 4, 5, 6, 7, 0, 1) SHA256ROUND0(15, 0xc19bf174, 1, 2, 3, 4, 5, 6, 7, 0) SHA256ROUND1(16, 0xe49b69c1, 0, 1, 2, 3, 4, 5, 6, 7) SHA256ROUND1(17, 0xefbe4786, 7, 0, 1, 2, 3, 4, 5, 6) SHA256ROUND1(18, 0x0fc19dc6, 6, 7, 0, 1, 2, 3, 4, 5) SHA256ROUND1(19, 0x240ca1cc, 5, 6, 7, 0, 1, 2, 3, 4) SHA256ROUND1(20, 0x2de92c6f, 4, 5, 6, 7, 0, 1, 2, 3) SHA256ROUND1(21, 0x4a7484aa, 3, 4, 5, 6, 7, 0, 1, 2) SHA256ROUND1(22, 0x5cb0a9dc, 2, 3, 4, 5, 6, 7, 0, 1) SHA256ROUND1(23, 0x76f988da, 1, 2, 3, 4, 5, 6, 7, 0) SHA256ROUND1(24, 0x983e5152, 0, 1, 2, 3, 4, 5, 6, 7) SHA256ROUND1(25, 0xa831c66d, 7, 0, 1, 2, 3, 4, 5, 6) SHA256ROUND1(26, 0xb00327c8, 6, 7, 0, 1, 2, 3, 4, 5) SHA256ROUND1(27, 0xbf597fc7, 5, 6, 7, 0, 1, 2, 3, 4) SHA256ROUND1(28, 0xc6e00bf3, 4, 5, 6, 7, 0, 1, 2, 3) SHA256ROUND1(29, 0xd5a79147, 3, 4, 5, 6, 7, 0, 1, 2) SHA256ROUND1(30, 0x06ca6351, 2, 3, 4, 5, 6, 7, 0, 1) SHA256ROUND1(31, 0x14292967, 1, 2, 3, 4, 5, 6, 7, 0) SHA256ROUND1(32, 0x27b70a85, 0, 1, 2, 3, 4, 5, 6, 7) SHA256ROUND1(33, 0x2e1b2138, 7, 0, 1, 2, 3, 4, 5, 6) SHA256ROUND1(34, 0x4d2c6dfc, 6, 7, 0, 1, 2, 3, 4, 5) SHA256ROUND1(35, 0x53380d13, 5, 6, 7, 0, 1, 2, 3, 4) SHA256ROUND1(36, 0x650a7354, 4, 5, 6, 7, 0, 1, 2, 3) SHA256ROUND1(37, 0x766a0abb, 3, 4, 5, 6, 7, 0, 1, 2) SHA256ROUND1(38, 0x81c2c92e, 2, 3, 4, 5, 6, 7, 0, 1) SHA256ROUND1(39, 0x92722c85, 1, 2, 3, 4, 5, 6, 7, 0) SHA256ROUND1(40, 0xa2bfe8a1, 0, 1, 2, 3, 4, 5, 6, 7) SHA256ROUND1(41, 0xa81a664b, 7, 0, 1, 2, 3, 4, 5, 6) SHA256ROUND1(42, 0xc24b8b70, 6, 7, 0, 1, 2, 3, 4, 5) SHA256ROUND1(43, 0xc76c51a3, 5, 6, 7, 0, 1, 2, 3, 4) SHA256ROUND1(44, 0xd192e819, 4, 5, 6, 7, 0, 1, 2, 3) SHA256ROUND1(45, 0xd6990624, 3, 4, 5, 6, 7, 0, 1, 2) SHA256ROUND1(46, 0xf40e3585, 2, 3, 4, 5, 6, 7, 0, 1) SHA256ROUND1(47, 0x106aa070, 1, 2, 3, 4, 5, 6, 7, 0) SHA256ROUND1(48, 0x19a4c116, 0, 1, 2, 3, 4, 5, 6, 7) SHA256ROUND1(49, 0x1e376c08, 7, 0, 1, 2, 3, 4, 5, 6) SHA256ROUND1(50, 0x2748774c, 6, 7, 0, 1, 2, 3, 4, 5) SHA256ROUND1(51, 0x34b0bcb5, 5, 6, 7, 0, 1, 2, 3, 4) SHA256ROUND1(52, 0x391c0cb3, 4, 5, 6, 7, 0, 1, 2, 3) SHA256ROUND1(53, 0x4ed8aa4a, 3, 4, 5, 6, 7, 0, 1, 2) SHA256ROUND1(54, 0x5b9cca4f, 2, 3, 4, 5, 6, 7, 0, 1) SHA256ROUND1(55, 0x682e6ff3, 1, 2, 3, 4, 5, 6, 7, 0) SHA256ROUND1(56, 0x748f82ee, 0, 1, 2, 3, 4, 5, 6, 7) SHA256ROUND1(57, 0x78a5636f, 7, 0, 1, 2, 3, 4, 5, 6) SHA256ROUND1(58, 0x84c87814, 6, 7, 0, 1, 2, 3, 4, 5) SHA256ROUND1(59, 0x8cc70208, 5, 6, 7, 0, 1, 2, 3, 4) SHA256ROUND1(60, 0x90befffa, 4, 5, 6, 7, 0, 1, 2, 3) SHA256ROUND1(61, 0xa4506ceb, 3, 4, 5, 6, 7, 0, 1, 2) SHA256ROUND1(62, 0xbef9a3f7, 2, 3, 4, 5, 6, 7, 0, 1) SHA256ROUND1(63, 0xc67178f2, 1, 2, 3, 4, 5, 6, 7, 0) MOVL dig+0(FP), BP MOVL (0*4)(BP), AX // H0 = a + H0 ADDL (0*4)(DI), AX MOVL AX, (0*4)(DI) MOVL AX, (0*4)(BP) MOVL (1*4)(BP), BX // H1 = b + H1 ADDL (1*4)(DI), BX MOVL BX, (1*4)(DI) MOVL BX, (1*4)(BP) MOVL (2*4)(BP), CX // H2 = c + H2 ADDL (2*4)(DI), CX MOVL CX, (2*4)(DI) MOVL CX, (2*4)(BP) MOVL (3*4)(BP), DX // H3 = d + H3 ADDL (3*4)(DI), DX MOVL DX, (3*4)(DI) MOVL DX, (3*4)(BP) MOVL (4*4)(BP), AX // H4 = e + H4 ADDL (4*4)(DI), AX MOVL AX, (4*4)(DI) MOVL AX, (4*4)(BP) MOVL (5*4)(BP), BX // H5 = f + H5 ADDL (5*4)(DI), BX MOVL BX, (5*4)(DI) MOVL BX, (5*4)(BP) MOVL (6*4)(BP), CX // H6 = g + H6 ADDL (6*4)(DI), CX MOVL CX, (6*4)(DI) MOVL CX, (6*4)(BP) MOVL (7*4)(BP), DX // H7 = h + H7 ADDL (7*4)(DI), DX MOVL DX, (7*4)(DI) MOVL DX, (7*4)(BP) ADDL $64, SI CMPL SI, 288(SP) JB loop end: RET
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