| // 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. |
| |
| // Code generated by go run gen.go -output md5block.go; DO NOT EDIT. |
| |
| package md5 |
| |
| import ( |
| "encoding/binary" |
| "math/bits" |
| ) |
| |
| func blockGeneric(dig *digest, p []byte) { |
| // load state |
| a, b, c, d := dig.s[0], dig.s[1], dig.s[2], dig.s[3] |
| |
| for i := 0; i <= len(p)-BlockSize; i += BlockSize { |
| // eliminate bounds checks on p |
| q := p[i:] |
| q = q[:BlockSize:BlockSize] |
| |
| // save current state |
| aa, bb, cc, dd := a, b, c, d |
| |
| // load input block |
| x0 := binary.LittleEndian.Uint32(q[4*0x0:]) |
| x1 := binary.LittleEndian.Uint32(q[4*0x1:]) |
| x2 := binary.LittleEndian.Uint32(q[4*0x2:]) |
| x3 := binary.LittleEndian.Uint32(q[4*0x3:]) |
| x4 := binary.LittleEndian.Uint32(q[4*0x4:]) |
| x5 := binary.LittleEndian.Uint32(q[4*0x5:]) |
| x6 := binary.LittleEndian.Uint32(q[4*0x6:]) |
| x7 := binary.LittleEndian.Uint32(q[4*0x7:]) |
| x8 := binary.LittleEndian.Uint32(q[4*0x8:]) |
| x9 := binary.LittleEndian.Uint32(q[4*0x9:]) |
| xa := binary.LittleEndian.Uint32(q[4*0xa:]) |
| xb := binary.LittleEndian.Uint32(q[4*0xb:]) |
| xc := binary.LittleEndian.Uint32(q[4*0xc:]) |
| xd := binary.LittleEndian.Uint32(q[4*0xd:]) |
| xe := binary.LittleEndian.Uint32(q[4*0xe:]) |
| xf := binary.LittleEndian.Uint32(q[4*0xf:]) |
| |
| // round 1 |
| a = b + bits.RotateLeft32((((c^d)&b)^d)+a+x0+0xd76aa478, 7) |
| d = a + bits.RotateLeft32((((b^c)&a)^c)+d+x1+0xe8c7b756, 12) |
| c = d + bits.RotateLeft32((((a^b)&d)^b)+c+x2+0x242070db, 17) |
| b = c + bits.RotateLeft32((((d^a)&c)^a)+b+x3+0xc1bdceee, 22) |
| a = b + bits.RotateLeft32((((c^d)&b)^d)+a+x4+0xf57c0faf, 7) |
| d = a + bits.RotateLeft32((((b^c)&a)^c)+d+x5+0x4787c62a, 12) |
| c = d + bits.RotateLeft32((((a^b)&d)^b)+c+x6+0xa8304613, 17) |
| b = c + bits.RotateLeft32((((d^a)&c)^a)+b+x7+0xfd469501, 22) |
| a = b + bits.RotateLeft32((((c^d)&b)^d)+a+x8+0x698098d8, 7) |
| d = a + bits.RotateLeft32((((b^c)&a)^c)+d+x9+0x8b44f7af, 12) |
| c = d + bits.RotateLeft32((((a^b)&d)^b)+c+xa+0xffff5bb1, 17) |
| b = c + bits.RotateLeft32((((d^a)&c)^a)+b+xb+0x895cd7be, 22) |
| a = b + bits.RotateLeft32((((c^d)&b)^d)+a+xc+0x6b901122, 7) |
| d = a + bits.RotateLeft32((((b^c)&a)^c)+d+xd+0xfd987193, 12) |
| c = d + bits.RotateLeft32((((a^b)&d)^b)+c+xe+0xa679438e, 17) |
| b = c + bits.RotateLeft32((((d^a)&c)^a)+b+xf+0x49b40821, 22) |
| |
| // round 2 |
| a = b + bits.RotateLeft32((((b^c)&d)^c)+a+x1+0xf61e2562, 5) |
| d = a + bits.RotateLeft32((((a^b)&c)^b)+d+x6+0xc040b340, 9) |
| c = d + bits.RotateLeft32((((d^a)&b)^a)+c+xb+0x265e5a51, 14) |
| b = c + bits.RotateLeft32((((c^d)&a)^d)+b+x0+0xe9b6c7aa, 20) |
| a = b + bits.RotateLeft32((((b^c)&d)^c)+a+x5+0xd62f105d, 5) |
| d = a + bits.RotateLeft32((((a^b)&c)^b)+d+xa+0x02441453, 9) |
| c = d + bits.RotateLeft32((((d^a)&b)^a)+c+xf+0xd8a1e681, 14) |
| b = c + bits.RotateLeft32((((c^d)&a)^d)+b+x4+0xe7d3fbc8, 20) |
| a = b + bits.RotateLeft32((((b^c)&d)^c)+a+x9+0x21e1cde6, 5) |
| d = a + bits.RotateLeft32((((a^b)&c)^b)+d+xe+0xc33707d6, 9) |
| c = d + bits.RotateLeft32((((d^a)&b)^a)+c+x3+0xf4d50d87, 14) |
| b = c + bits.RotateLeft32((((c^d)&a)^d)+b+x8+0x455a14ed, 20) |
| a = b + bits.RotateLeft32((((b^c)&d)^c)+a+xd+0xa9e3e905, 5) |
| d = a + bits.RotateLeft32((((a^b)&c)^b)+d+x2+0xfcefa3f8, 9) |
| c = d + bits.RotateLeft32((((d^a)&b)^a)+c+x7+0x676f02d9, 14) |
| b = c + bits.RotateLeft32((((c^d)&a)^d)+b+xc+0x8d2a4c8a, 20) |
| |
| // round 3 |
| a = b + bits.RotateLeft32((b^c^d)+a+x5+0xfffa3942, 4) |
| d = a + bits.RotateLeft32((a^b^c)+d+x8+0x8771f681, 11) |
| c = d + bits.RotateLeft32((d^a^b)+c+xb+0x6d9d6122, 16) |
| b = c + bits.RotateLeft32((c^d^a)+b+xe+0xfde5380c, 23) |
| a = b + bits.RotateLeft32((b^c^d)+a+x1+0xa4beea44, 4) |
| d = a + bits.RotateLeft32((a^b^c)+d+x4+0x4bdecfa9, 11) |
| c = d + bits.RotateLeft32((d^a^b)+c+x7+0xf6bb4b60, 16) |
| b = c + bits.RotateLeft32((c^d^a)+b+xa+0xbebfbc70, 23) |
| a = b + bits.RotateLeft32((b^c^d)+a+xd+0x289b7ec6, 4) |
| d = a + bits.RotateLeft32((a^b^c)+d+x0+0xeaa127fa, 11) |
| c = d + bits.RotateLeft32((d^a^b)+c+x3+0xd4ef3085, 16) |
| b = c + bits.RotateLeft32((c^d^a)+b+x6+0x04881d05, 23) |
| a = b + bits.RotateLeft32((b^c^d)+a+x9+0xd9d4d039, 4) |
| d = a + bits.RotateLeft32((a^b^c)+d+xc+0xe6db99e5, 11) |
| c = d + bits.RotateLeft32((d^a^b)+c+xf+0x1fa27cf8, 16) |
| b = c + bits.RotateLeft32((c^d^a)+b+x2+0xc4ac5665, 23) |
| |
| // round 4 |
| a = b + bits.RotateLeft32((c^(b|^d))+a+x0+0xf4292244, 6) |
| d = a + bits.RotateLeft32((b^(a|^c))+d+x7+0x432aff97, 10) |
| c = d + bits.RotateLeft32((a^(d|^b))+c+xe+0xab9423a7, 15) |
| b = c + bits.RotateLeft32((d^(c|^a))+b+x5+0xfc93a039, 21) |
| a = b + bits.RotateLeft32((c^(b|^d))+a+xc+0x655b59c3, 6) |
| d = a + bits.RotateLeft32((b^(a|^c))+d+x3+0x8f0ccc92, 10) |
| c = d + bits.RotateLeft32((a^(d|^b))+c+xa+0xffeff47d, 15) |
| b = c + bits.RotateLeft32((d^(c|^a))+b+x1+0x85845dd1, 21) |
| a = b + bits.RotateLeft32((c^(b|^d))+a+x8+0x6fa87e4f, 6) |
| d = a + bits.RotateLeft32((b^(a|^c))+d+xf+0xfe2ce6e0, 10) |
| c = d + bits.RotateLeft32((a^(d|^b))+c+x6+0xa3014314, 15) |
| b = c + bits.RotateLeft32((d^(c|^a))+b+xd+0x4e0811a1, 21) |
| a = b + bits.RotateLeft32((c^(b|^d))+a+x4+0xf7537e82, 6) |
| d = a + bits.RotateLeft32((b^(a|^c))+d+xb+0xbd3af235, 10) |
| c = d + bits.RotateLeft32((a^(d|^b))+c+x2+0x2ad7d2bb, 15) |
| b = c + bits.RotateLeft32((d^(c|^a))+b+x9+0xeb86d391, 21) |
| |
| // add saved state |
| a += aa |
| b += bb |
| c += cc |
| d += dd |
| } |
| |
| // save state |
| dig.s[0], dig.s[1], dig.s[2], dig.s[3] = a, b, c, d |
| } |
