Adds most of the toolsHEADmaster

1 files changed, 226 insertions, 0 deletions

diff --git a/v_windows/v/vlib/crypto/sha256/sha256.v b/v_windows/v/vlib/crypto/sha256/sha256.v
new file mode 100644
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--- /dev/null
+++ b/v_windows/v/vlib/crypto/sha256/sha256.v
@@ -0,0 +1,226 @@
+// 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 sha256 implements the SHA224 and SHA256 hash algorithms as defined
+// in FIPS 180-4.
+// Based off:   https://github.com/golang/go/tree/master/src/crypto/sha256
+// Last commit: https://github.com/golang/go/commit/3ce865d7a0b88714cc433454ae2370a105210c01
+module sha256
+
+import encoding.binary
+
+pub const (
+	// The size of a SHA256 checksum in bytes.
+	size       = 32
+	// The size of a SHA224 checksum in bytes.
+	size224    = 28
+	// The blocksize of SHA256 and SHA224 in bytes.
+	block_size = 64
+)
+
+const (
+	chunk     = 64
+	init0     = 0x6A09E667
+	init1     = 0xBB67AE85
+	init2     = 0x3C6EF372
+	init3     = 0xA54FF53A
+	init4     = 0x510E527F
+	init5     = 0x9B05688C
+	init6     = 0x1F83D9AB
+	init7     = 0x5BE0CD19
+	init0_224 = 0xC1059ED8
+	init1_224 = 0x367CD507
+	init2_224 = 0x3070DD17
+	init3_224 = 0xF70E5939
+	init4_224 = 0xFFC00B31
+	init5_224 = 0x68581511
+	init6_224 = 0x64F98FA7
+	init7_224 = 0xBEFA4FA4
+)
+
+// digest represents the partial evaluation of a checksum.
+struct Digest {
+mut:
+	h     []u32
+	x     []byte
+	nx    int
+	len   u64
+	is224 bool // mark if this digest is SHA-224
+}
+
+fn (mut d Digest) reset() {
+	d.h = []u32{len: (8)}
+	d.x = []byte{len: sha256.chunk}
+	if !d.is224 {
+		d.h[0] = u32(sha256.init0)
+		d.h[1] = u32(sha256.init1)
+		d.h[2] = u32(sha256.init2)
+		d.h[3] = u32(sha256.init3)
+		d.h[4] = u32(sha256.init4)
+		d.h[5] = u32(sha256.init5)
+		d.h[6] = u32(sha256.init6)
+		d.h[7] = u32(sha256.init7)
+	} else {
+		d.h[0] = u32(sha256.init0_224)
+		d.h[1] = u32(sha256.init1_224)
+		d.h[2] = u32(sha256.init2_224)
+		d.h[3] = u32(sha256.init3_224)
+		d.h[4] = u32(sha256.init4_224)
+		d.h[5] = u32(sha256.init5_224)
+		d.h[6] = u32(sha256.init6_224)
+		d.h[7] = u32(sha256.init7_224)
+	}
+	d.nx = 0
+	d.len = 0
+}
+
+// new returns a new Digest (implementing hash.Hash) computing the SHA256 checksum.
+pub fn new() &Digest {
+	mut d := &Digest{}
+	d.reset()
+	return d
+}
+
+// new224 returns a new Digest (implementing hash.Hash) computing the SHA224 checksum.
+pub fn new224() &Digest {
+	mut d := &Digest{}
+	d.is224 = true
+	d.reset()
+	return d
+}
+
+// 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 == sha256.chunk {
+				block(mut d, d.x)
+				d.nx = 0
+			}
+			if n >= p.len {
+				p = []
+			} else {
+				p = p[n..]
+			}
+		}
+		if p.len >= sha256.chunk {
+			n := p.len & ~(sha256.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
+	}
+}
+
+pub 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()
+	if d0.is224 {
+		for b in hash[..sha256.size224] {
+			b_out << b
+		}
+	} else {
+		for b in hash {
+			b_out << b
+		}
+	}
+	return b_out
+}
+
+fn (mut d Digest) checksum() []byte {
+	mut len := d.len
+	// Padding. Add a 1 bit and 0 bits until 56 bytes mod 64.
+	mut tmp := []byte{len: (64)}
+	tmp[0] = 0x80
+	if int(len) % 64 < 56 {
+		d.write(tmp[..56 - int(len) % 64]) or { panic(err) }
+	} else {
+		d.write(tmp[..64 + 56 - int(len) % 64]) or { panic(err) }
+	}
+	// Length in bits.
+	len <<= u64(3)
+	binary.big_endian_put_u64(mut tmp, len)
+	d.write(tmp[..8]) or { panic(err) }
+	if d.nx != 0 {
+		panic('d.nx != 0')
+	}
+	mut digest := []byte{len: sha256.size}
+	binary.big_endian_put_u32(mut digest, d.h[0])
+	binary.big_endian_put_u32(mut digest[4..], d.h[1])
+	binary.big_endian_put_u32(mut digest[8..], d.h[2])
+	binary.big_endian_put_u32(mut digest[12..], d.h[3])
+	binary.big_endian_put_u32(mut digest[16..], d.h[4])
+	binary.big_endian_put_u32(mut digest[20..], d.h[5])
+	binary.big_endian_put_u32(mut digest[24..], d.h[6])
+	if !d.is224 {
+		binary.big_endian_put_u32(mut digest[28..], d.h[7])
+	}
+	return digest
+}
+
+// sum returns the SHA256 checksum of the bytes in `data`.
+// Example: assert sha256.sum('V'.bytes()).len > 0 == true
+pub fn sum(data []byte) []byte {
+	return sum256(data)
+}
+
+// sum256 returns the SHA256 checksum of the data.
+pub fn sum256(data []byte) []byte {
+	mut d := new()
+	d.write(data) or { panic(err) }
+	return d.checksum()
+}
+
+// sum224 returns the SHA224 checksum of the data.
+pub fn sum224(data []byte) []byte {
+	mut d := new224()
+	d.write(data) or { panic(err) }
+	sum := d.checksum()
+	sum224 := []byte{len: sha256.size224}
+	copy(sum224, sum[..sha256.size224])
+	return sum224
+}
+
+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 {
+	if !d.is224 {
+		return sha256.size
+	}
+	return sha256.size224
+}
+
+// block_size returns the block size of the checksum in bytes.
+pub fn (d &Digest) block_size() int {
+	return sha256.block_size
+}
+
+// hexhash returns a hexadecimal SHA256 hash sum `string` of `s`.
+// Example: assert sha256.hexhash('V') == 'de5a6f78116eca62d7fc5ce159d23ae6b889b365a1739ad2cf36f925a140d0cc'
+pub fn hexhash(s string) string {
+	return sum256(s.bytes()).hex()
+}
+
+// hexhash_224 returns a hexadecimal SHA224 hash sum `string` of `s`.
+pub fn hexhash_224(s string) string {
+	return sum224(s.bytes()).hex()
+}