289b30715d
This commit converts the dependency management from Godeps to the vendor folder, also switching the tool from godep to trash. Since the upstream tool lacks a few features proposed via a few PRs, until those PRs are merged in (if), use github.com/karalabe/trash. You can update dependencies via trash --update. All dependencies have been updated to their latest version. Parts of the build system are reworked to drop old notions of Godeps and invocation of the go vet command so that it doesn't run against the vendor folder, as that will just blow up during vetting. The conversion drops OpenCL (and hence GPU mining support) from ethash and our codebase. The short reasoning is that there's noone to maintain and having opencl libs in our deps messes up builds as go install ./... tries to build them, failing with unsatisfied link errors for the C OpenCL deps. golang.org/x/net/context is not vendored in. We expect it to be fetched by the user (i.e. using go get). To keep ci.go builds reproducible the package is "vendored" in build/_vendor.
121 lines
2.4 KiB
Go
121 lines
2.4 KiB
Go
// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package ripemd160 implements the RIPEMD-160 hash algorithm.
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package ripemd160 // import "golang.org/x/crypto/ripemd160"
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// RIPEMD-160 is designed by by Hans Dobbertin, Antoon Bosselaers, and Bart
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// Preneel with specifications available at:
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// http://homes.esat.kuleuven.be/~cosicart/pdf/AB-9601/AB-9601.pdf.
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import (
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"crypto"
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"hash"
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)
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func init() {
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crypto.RegisterHash(crypto.RIPEMD160, New)
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}
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// The size of the checksum in bytes.
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const Size = 20
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// The block size of the hash algorithm in bytes.
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const BlockSize = 64
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const (
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_s0 = 0x67452301
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_s1 = 0xefcdab89
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_s2 = 0x98badcfe
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_s3 = 0x10325476
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_s4 = 0xc3d2e1f0
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)
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// digest represents the partial evaluation of a checksum.
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type digest struct {
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s [5]uint32 // running context
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x [BlockSize]byte // temporary buffer
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nx int // index into x
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tc uint64 // total count of bytes processed
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}
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func (d *digest) Reset() {
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d.s[0], d.s[1], d.s[2], d.s[3], d.s[4] = _s0, _s1, _s2, _s3, _s4
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d.nx = 0
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d.tc = 0
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}
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// New returns a new hash.Hash computing the checksum.
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func New() hash.Hash {
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result := new(digest)
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result.Reset()
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return result
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}
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func (d *digest) Size() int { return Size }
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func (d *digest) BlockSize() int { return BlockSize }
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func (d *digest) Write(p []byte) (nn int, err error) {
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nn = len(p)
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d.tc += uint64(nn)
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if d.nx > 0 {
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n := len(p)
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if n > BlockSize-d.nx {
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n = BlockSize - d.nx
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}
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for i := 0; i < n; i++ {
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d.x[d.nx+i] = p[i]
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}
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d.nx += n
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if d.nx == BlockSize {
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_Block(d, d.x[0:])
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d.nx = 0
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}
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p = p[n:]
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}
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n := _Block(d, p)
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p = p[n:]
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if len(p) > 0 {
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d.nx = copy(d.x[:], p)
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}
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return
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}
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func (d0 *digest) Sum(in []byte) []byte {
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// Make a copy of d0 so that caller can keep writing and summing.
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d := *d0
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// Padding. Add a 1 bit and 0 bits until 56 bytes mod 64.
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tc := d.tc
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var tmp [64]byte
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tmp[0] = 0x80
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if tc%64 < 56 {
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d.Write(tmp[0 : 56-tc%64])
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} else {
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d.Write(tmp[0 : 64+56-tc%64])
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}
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// Length in bits.
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tc <<= 3
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for i := uint(0); i < 8; i++ {
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tmp[i] = byte(tc >> (8 * i))
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}
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d.Write(tmp[0:8])
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if d.nx != 0 {
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panic("d.nx != 0")
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}
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var digest [Size]byte
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for i, s := range d.s {
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digest[i*4] = byte(s)
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digest[i*4+1] = byte(s >> 8)
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digest[i*4+2] = byte(s >> 16)
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digest[i*4+3] = byte(s >> 24)
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}
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return append(in, digest[:]...)
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}
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