diff options
Diffstat (limited to 'v_windows/v/vlib/crypto/md5/md5block_generic.v')
| -rw-r--r-- | v_windows/v/vlib/crypto/md5/md5block_generic.v | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/v_windows/v/vlib/crypto/md5/md5block_generic.v b/v_windows/v/vlib/crypto/md5/md5block_generic.v new file mode 100644 index 0000000..ebc4a8d --- /dev/null +++ b/v_windows/v/vlib/crypto/md5/md5block_generic.v @@ -0,0 +1,132 @@ +// Copyright (c) 2019-2021 Alexander Medvednikov. All rights reserved. +// Use of this source code is governed by an MIT license +// that can be found in the LICENSE file. + +// This is the generic version with no architecture optimizations. +// In its own file so that an architecture +// optimized verision can be substituted + +module md5 + +import math.bits +import encoding.binary + +fn block_generic(mut dig Digest, p []byte) { + // load state + mut a := dig.s[0] + mut b := dig.s[1] + mut c := dig.s[2] + mut d := dig.s[3] + + for i := 0; i <= p.len - block_size; i += block_size { + mut q := p[i..] + q = q[..block_size] + // save current state + aa := a + bb := b + cc := c + dd := d + + // load input block + x0 := binary.little_endian_u32(q[4 * 0x0..]) + x1 := binary.little_endian_u32(q[4 * 0x1..]) + x2 := binary.little_endian_u32(q[4 * 0x2..]) + x3 := binary.little_endian_u32(q[4 * 0x3..]) + x4 := binary.little_endian_u32(q[4 * 0x4..]) + x5 := binary.little_endian_u32(q[4 * 0x5..]) + x6 := binary.little_endian_u32(q[4 * 0x6..]) + x7 := binary.little_endian_u32(q[4 * 0x7..]) + x8 := binary.little_endian_u32(q[4 * 0x8..]) + x9 := binary.little_endian_u32(q[4 * 0x9..]) + xa := binary.little_endian_u32(q[4 * 0xa..]) + xb := binary.little_endian_u32(q[4 * 0xb..]) + xc := binary.little_endian_u32(q[4 * 0xc..]) + xd := binary.little_endian_u32(q[4 * 0xd..]) + xe := binary.little_endian_u32(q[4 * 0xe..]) + xf := binary.little_endian_u32(q[4 * 0xf..]) + + // round 1 + a = b + bits.rotate_left_32((((c ^ d) & b) ^ d) + a + x0 + u32(0xd76aa478), 7) + d = a + bits.rotate_left_32((((b ^ c) & a) ^ c) + d + x1 + u32(0xe8c7b756), 12) + c = d + bits.rotate_left_32((((a ^ b) & d) ^ b) + c + x2 + u32(0x242070db), 17) + b = c + bits.rotate_left_32((((d ^ a) & c) ^ a) + b + x3 + u32(0xc1bdceee), 22) + a = b + bits.rotate_left_32((((c ^ d) & b) ^ d) + a + x4 + u32(0xf57c0faf), 7) + d = a + bits.rotate_left_32((((b ^ c) & a) ^ c) + d + x5 + u32(0x4787c62a), 12) + c = d + bits.rotate_left_32((((a ^ b) & d) ^ b) + c + x6 + u32(0xa8304613), 17) + b = c + bits.rotate_left_32((((d ^ a) & c) ^ a) + b + x7 + u32(0xfd469501), 22) + a = b + bits.rotate_left_32((((c ^ d) & b) ^ d) + a + x8 + u32(0x698098d8), 7) + d = a + bits.rotate_left_32((((b ^ c) & a) ^ c) + d + x9 + u32(0x8b44f7af), 12) + c = d + bits.rotate_left_32((((a ^ b) & d) ^ b) + c + xa + u32(0xffff5bb1), 17) + b = c + bits.rotate_left_32((((d ^ a) & c) ^ a) + b + xb + u32(0x895cd7be), 22) + a = b + bits.rotate_left_32((((c ^ d) & b) ^ d) + a + xc + u32(0x6b901122), 7) + d = a + bits.rotate_left_32((((b ^ c) & a) ^ c) + d + xd + u32(0xfd987193), 12) + c = d + bits.rotate_left_32((((a ^ b) & d) ^ b) + c + xe + u32(0xa679438e), 17) + b = c + bits.rotate_left_32((((d ^ a) & c) ^ a) + b + xf + u32(0x49b40821), 22) + + // round 2 + a = b + bits.rotate_left_32((((b ^ c) & d) ^ c) + a + x1 + u32(0xf61e2562), 5) + d = a + bits.rotate_left_32((((a ^ b) & c) ^ b) + d + x6 + u32(0xc040b340), 9) + c = d + bits.rotate_left_32((((d ^ a) & b) ^ a) + c + xb + u32(0x265e5a51), 14) + b = c + bits.rotate_left_32((((c ^ d) & a) ^ d) + b + x0 + u32(0xe9b6c7aa), 20) + a = b + bits.rotate_left_32((((b ^ c) & d) ^ c) + a + x5 + u32(0xd62f105d), 5) + d = a + bits.rotate_left_32((((a ^ b) & c) ^ b) + d + xa + u32(0x02441453), 9) + c = d + bits.rotate_left_32((((d ^ a) & b) ^ a) + c + xf + u32(0xd8a1e681), 14) + b = c + bits.rotate_left_32((((c ^ d) & a) ^ d) + b + x4 + u32(0xe7d3fbc8), 20) + a = b + bits.rotate_left_32((((b ^ c) & d) ^ c) + a + x9 + u32(0x21e1cde6), 5) + d = a + bits.rotate_left_32((((a ^ b) & c) ^ b) + d + xe + u32(0xc33707d6), 9) + c = d + bits.rotate_left_32((((d ^ a) & b) ^ a) + c + x3 + u32(0xf4d50d87), 14) + b = c + bits.rotate_left_32((((c ^ d) & a) ^ d) + b + x8 + u32(0x455a14ed), 20) + a = b + bits.rotate_left_32((((b ^ c) & d) ^ c) + a + xd + u32(0xa9e3e905), 5) + d = a + bits.rotate_left_32((((a ^ b) & c) ^ b) + d + x2 + u32(0xfcefa3f8), 9) + c = d + bits.rotate_left_32((((d ^ a) & b) ^ a) + c + x7 + u32(0x676f02d9), 14) + b = c + bits.rotate_left_32((((c ^ d) & a) ^ d) + b + xc + u32(0x8d2a4c8a), 20) + + // round 3 + a = b + bits.rotate_left_32((b ^ c ^ d) + a + x5 + u32(0xfffa3942), 4) + d = a + bits.rotate_left_32((a ^ b ^ c) + d + x8 + u32(0x8771f681), 11) + c = d + bits.rotate_left_32((d ^ a ^ b) + c + xb + u32(0x6d9d6122), 16) + b = c + bits.rotate_left_32((c ^ d ^ a) + b + xe + u32(0xfde5380c), 23) + a = b + bits.rotate_left_32((b ^ c ^ d) + a + x1 + u32(0xa4beea44), 4) + d = a + bits.rotate_left_32((a ^ b ^ c) + d + x4 + u32(0x4bdecfa9), 11) + c = d + bits.rotate_left_32((d ^ a ^ b) + c + x7 + u32(0xf6bb4b60), 16) + b = c + bits.rotate_left_32((c ^ d ^ a) + b + xa + u32(0xbebfbc70), 23) + a = b + bits.rotate_left_32((b ^ c ^ d) + a + xd + u32(0x289b7ec6), 4) + d = a + bits.rotate_left_32((a ^ b ^ c) + d + x0 + u32(0xeaa127fa), 11) + c = d + bits.rotate_left_32((d ^ a ^ b) + c + x3 + u32(0xd4ef3085), 16) + b = c + bits.rotate_left_32((c ^ d ^ a) + b + x6 + u32(0x04881d05), 23) + a = b + bits.rotate_left_32((b ^ c ^ d) + a + x9 + u32(0xd9d4d039), 4) + d = a + bits.rotate_left_32((a ^ b ^ c) + d + xc + u32(0xe6db99e5), 11) + c = d + bits.rotate_left_32((d ^ a ^ b) + c + xf + u32(0x1fa27cf8), 16) + b = c + bits.rotate_left_32((c ^ d ^ a) + b + x2 + u32(0xc4ac5665), 23) + + // round 4 + a = b + bits.rotate_left_32((c ^ (b | ~d)) + a + x0 + u32(0xf4292244), 6) + d = a + bits.rotate_left_32((b ^ (a | ~c)) + d + x7 + u32(0x432aff97), 10) + c = d + bits.rotate_left_32((a ^ (d | ~b)) + c + xe + u32(0xab9423a7), 15) + b = c + bits.rotate_left_32((d ^ (c | ~a)) + b + x5 + u32(0xfc93a039), 21) + a = b + bits.rotate_left_32((c ^ (b | ~d)) + a + xc + u32(0x655b59c3), 6) + d = a + bits.rotate_left_32((b ^ (a | ~c)) + d + x3 + u32(0x8f0ccc92), 10) + c = d + bits.rotate_left_32((a ^ (d | ~b)) + c + xa + u32(0xffeff47d), 15) + b = c + bits.rotate_left_32((d ^ (c | ~a)) + b + x1 + u32(0x85845dd1), 21) + a = b + bits.rotate_left_32((c ^ (b | ~d)) + a + x8 + u32(0x6fa87e4f), 6) + d = a + bits.rotate_left_32((b ^ (a | ~c)) + d + xf + u32(0xfe2ce6e0), 10) + c = d + bits.rotate_left_32((a ^ (d | ~b)) + c + x6 + u32(0xa3014314), 15) + b = c + bits.rotate_left_32((d ^ (c | ~a)) + b + xd + u32(0x4e0811a1), 21) + a = b + bits.rotate_left_32((c ^ (b | ~d)) + a + x4 + u32(0xf7537e82), 6) + d = a + bits.rotate_left_32((b ^ (a | ~c)) + d + xb + u32(0xbd3af235), 10) + c = d + bits.rotate_left_32((a ^ (d | ~b)) + c + x2 + u32(0x2ad7d2bb), 15) + b = c + bits.rotate_left_32((d ^ (c | ~a)) + b + x9 + u32(0xeb86d391), 21) + + // add saved state + a += aa + b += bb + c += cc + d += dd + } + + // save state + dig.s[0] = a + dig.s[1] = b + dig.s[2] = c + dig.s[3] = d +} |