diff options
Diffstat (limited to 'v_windows/v/old/vlib/crypto/sha512/sha512.v')
| -rw-r--r-- | v_windows/v/old/vlib/crypto/sha512/sha512.v | 324 |
1 files changed, 324 insertions, 0 deletions
diff --git a/v_windows/v/old/vlib/crypto/sha512/sha512.v b/v_windows/v/old/vlib/crypto/sha512/sha512.v new file mode 100644 index 0000000..dd5d3a9 --- /dev/null +++ b/v_windows/v/old/vlib/crypto/sha512/sha512.v @@ -0,0 +1,324 @@ +// 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. +// Package sha512 implements the SHA-384, SHA-512, SHA-512/224, and SHA-512/256 +// hash algorithms as defined in FIPS 180-4. +// Based off: https://github.com/golang/go/tree/master/src/crypto/sha512 +// Last commit: https://github.com/golang/go/commit/3ce865d7a0b88714cc433454ae2370a105210c01 +module sha512 + +import crypto +import encoding.binary + +pub const ( + // size is the size, in bytes, of a SHA-512 checksum. + size = 64 + // size224 is the size, in bytes, of a SHA-512/224 checksum. + size224 = 28 + // size256 is the size, in bytes, of a SHA-512/256 checksum. + size256 = 32 + // size384 is the size, in bytes, of a SHA-384 checksum. + size384 = 48 + // block_size is the block size, in bytes, of the SHA-512/224, + // SHA-512/256, SHA-384 and SHA-512 hash functions. + block_size = 128 +) + +const ( + chunk = 128 + init0 = u64(0x6a09e667f3bcc908) + init1 = u64(0xbb67ae8584caa73b) + init2 = u64(0x3c6ef372fe94f82b) + init3 = u64(0xa54ff53a5f1d36f1) + init4 = u64(0x510e527fade682d1) + init5 = u64(0x9b05688c2b3e6c1f) + init6 = u64(0x1f83d9abfb41bd6b) + init7 = u64(0x5be0cd19137e2179) + init0_224 = u64(0x8c3d37c819544da2) + init1_224 = u64(0x73e1996689dcd4d6) + init2_224 = u64(0x1dfab7ae32ff9c82) + init3_224 = u64(0x679dd514582f9fcf) + init4_224 = u64(0x0f6d2b697bd44da8) + init5_224 = u64(0x77e36f7304c48942) + init6_224 = u64(0x3f9d85a86a1d36c8) + init7_224 = u64(0x1112e6ad91d692a1) + init0_256 = u64(0x22312194fc2bf72c) + init1_256 = u64(0x9f555fa3c84c64c2) + init2_256 = u64(0x2393b86b6f53b151) + init3_256 = u64(0x963877195940eabd) + init4_256 = u64(0x96283ee2a88effe3) + init5_256 = u64(0xbe5e1e2553863992) + init6_256 = u64(0x2b0199fc2c85b8aa) + init7_256 = u64(0x0eb72ddc81c52ca2) + init0_384 = u64(0xcbbb9d5dc1059ed8) + init1_384 = u64(0x629a292a367cd507) + init2_384 = u64(0x9159015a3070dd17) + init3_384 = u64(0x152fecd8f70e5939) + init4_384 = u64(0x67332667ffc00b31) + init5_384 = u64(0x8eb44a8768581511) + init6_384 = u64(0xdb0c2e0d64f98fa7) + init7_384 = u64(0x47b5481dbefa4fa4) +) + +// Digest represents the partial evaluation of a checksum. +struct Digest { +mut: + h []u64 + x []byte + nx int + len u64 + function crypto.Hash +} + +fn (mut d Digest) reset() { + d.h = []u64{len: (8)} + d.x = []byte{len: sha512.chunk} + match d.function { + .sha384 { + d.h[0] = sha512.init0_384 + d.h[1] = sha512.init1_384 + d.h[2] = sha512.init2_384 + d.h[3] = sha512.init3_384 + d.h[4] = sha512.init4_384 + d.h[5] = sha512.init5_384 + d.h[6] = sha512.init6_384 + d.h[7] = sha512.init7_384 + } + .sha512_224 { + d.h[0] = sha512.init0_224 + d.h[1] = sha512.init1_224 + d.h[2] = sha512.init2_224 + d.h[3] = sha512.init3_224 + d.h[4] = sha512.init4_224 + d.h[5] = sha512.init5_224 + d.h[6] = sha512.init6_224 + d.h[7] = sha512.init7_224 + } + .sha512_256 { + d.h[0] = sha512.init0_256 + d.h[1] = sha512.init1_256 + d.h[2] = sha512.init2_256 + d.h[3] = sha512.init3_256 + d.h[4] = sha512.init4_256 + d.h[5] = sha512.init5_256 + d.h[6] = sha512.init6_256 + d.h[7] = sha512.init7_256 + } + else { + d.h[0] = sha512.init0 + d.h[1] = sha512.init1 + d.h[2] = sha512.init2 + d.h[3] = sha512.init3 + d.h[4] = sha512.init4 + d.h[5] = sha512.init5 + d.h[6] = sha512.init6 + d.h[7] = sha512.init7 + } + } + d.nx = 0 + d.len = 0 +} + +// internal +fn new_digest(hash crypto.Hash) &Digest { + mut d := &Digest{ + function: hash + } + d.reset() + return d +} + +// new returns a new Digest (implementing hash.Hash) computing the SHA-512 checksum. +pub fn new() &Digest { + return new_digest(.sha512) +} + +// new512_224 returns a new Digest (implementing hash.Hash) computing the SHA-512/224 checksum. +fn new512_224() &Digest { + return new_digest(.sha512_224) +} + +// new512_256 returns a new Digest (implementing hash.Hash) computing the SHA-512/256 checksum. +fn new512_256() &Digest { + return new_digest(.sha512_256) +} + +// new384 returns a new Digest (implementing hash.Hash) computing the SHA-384 checksum. +fn new384() &Digest { + return new_digest(.sha384) +} + +// write writes the contents of `p_` to the internal hash representation. +fn (mut d Digest) write(p_ []byte) ?int { + unsafe { + mut p := p_ + nn := p.len + d.len += u64(nn) + if d.nx > 0 { + n := copy(d.x[d.nx..], p) + d.nx += n + if d.nx == sha512.chunk { + block(mut d, d.x) + d.nx = 0 + } + if n >= p.len { + p = [] + } else { + p = p[n..] + } + } + if p.len >= sha512.chunk { + n := p.len & ~(sha512.chunk - 1) + block(mut d, p[..n]) + if n >= p.len { + p = [] + } else { + p = p[n..] + } + } + if p.len > 0 { + d.nx = copy(d.x, p) + } + return nn + } +} + +fn (d &Digest) sum(b_in []byte) []byte { + // Make a copy of d so that caller can keep writing and summing. + mut d0 := *d + hash := d0.checksum() + mut b_out := b_in.clone() + match d0.function { + .sha384 { + for b in hash[..sha512.size384] { + b_out << b + } + } + .sha512_224 { + for b in hash[..sha512.size224] { + b_out << b + } + } + .sha512_256 { + for b in hash[..sha512.size256] { + b_out << b + } + } + else { + for b in hash { + b_out << b + } + } + } + return b_out +} + +fn (mut d Digest) checksum() []byte { + // Padding. Add a 1 bit and 0 bits until 112 bytes mod 128. + mut len := d.len + mut tmp := []byte{len: (128)} + tmp[0] = 0x80 + if int(len) % 128 < 112 { + d.write(tmp[..112 - int(len) % 128]) or { panic(err) } + } else { + d.write(tmp[..128 + 112 - int(len) % 128]) or { panic(err) } + } + // Length in bits. + len <<= u64(3) + binary.big_endian_put_u64(mut tmp, u64(0)) // upper 64 bits are always zero, because len variable has type u64 + binary.big_endian_put_u64(mut tmp[8..], len) + d.write(tmp[..16]) or { panic(err) } + if d.nx != 0 { + panic('d.nx != 0') + } + mut digest := []byte{len: sha512.size} + binary.big_endian_put_u64(mut digest, d.h[0]) + binary.big_endian_put_u64(mut digest[8..], d.h[1]) + binary.big_endian_put_u64(mut digest[16..], d.h[2]) + binary.big_endian_put_u64(mut digest[24..], d.h[3]) + binary.big_endian_put_u64(mut digest[32..], d.h[4]) + binary.big_endian_put_u64(mut digest[40..], d.h[5]) + if d.function != .sha384 { + binary.big_endian_put_u64(mut digest[48..], d.h[6]) + binary.big_endian_put_u64(mut digest[56..], d.h[7]) + } + return digest +} + +// sum512 returns the SHA512 checksum of the data. +pub fn sum512(data []byte) []byte { + mut d := new_digest(.sha512) + d.write(data) or { panic(err) } + return d.checksum() +} + +// sum384 returns the SHA384 checksum of the data. +pub fn sum384(data []byte) []byte { + mut d := new_digest(.sha384) + d.write(data) or { panic(err) } + sum := d.checksum() + sum384 := []byte{len: sha512.size384} + copy(sum384, sum[..sha512.size384]) + return sum384 +} + +// sum512_224 returns the Sum512/224 checksum of the data. +pub fn sum512_224(data []byte) []byte { + mut d := new_digest(.sha512_224) + d.write(data) or { panic(err) } + sum := d.checksum() + sum224 := []byte{len: sha512.size224} + copy(sum224, sum[..sha512.size224]) + return sum224 +} + +// sum512_256 returns the Sum512/256 checksum of the data. +pub fn sum512_256(data []byte) []byte { + mut d := new_digest(.sha512_256) + d.write(data) or { panic(err) } + sum := d.checksum() + sum256 := []byte{len: sha512.size256} + copy(sum256, sum[..sha512.size256]) + return sum256 +} + +fn block(mut dig Digest, p []byte) { + // For now just use block_generic until we have specific + // architecture optimized versions + block_generic(mut dig, p) +} + +// size returns the size of the checksum in bytes. +pub fn (d &Digest) size() int { + match d.function { + .sha512_224 { return sha512.size224 } + .sha512_256 { return sha512.size256 } + .sha384 { return sha512.size384 } + else { return sha512.size } + } +} + +// block_size returns the block size of the checksum in bytes. +pub fn (d &Digest) block_size() int { + return sha512.block_size +} + +// hexhash returns a hexadecimal SHA512 hash sum `string` of `s`. +pub fn hexhash(s string) string { + return sum512(s.bytes()).hex() +} + +// hexhash_384 returns a hexadecimal SHA384 hash sum `string` of `s`. +pub fn hexhash_384(s string) string { + return sum384(s.bytes()).hex() +} + +// hexhash_512_224 returns a hexadecimal SHA512/224 hash sum `string` of `s`. +pub fn hexhash_512_224(s string) string { + return sum512_224(s.bytes()).hex() +} + +// hexhash_512_256 returns a hexadecimal 512/256 hash sum `string` of `s`. +pub fn hexhash_512_256(s string) string { + return sum512_256(s.bytes()).hex() +} |