mirror of
https://github.com/XTLS/REALITY.git
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crypto/internal/fips/tls13: implement TLS 1.3 KDF
The new implementation encodes the key schedule into the type system, which is actually nicer than what we had before. For #69536 Change-Id: Iddab62c2aae40bc2425a155443576bb9b7aafe03 Reviewed-on: https://go-review.googlesource.com/c/go/+/626836 Reviewed-by: Russ Cox <rsc@golang.org> Reviewed-by: Roland Shoemaker <roland@golang.org> Commit-Queue: Roland Shoemaker <roland@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Auto-Submit: Filippo Valsorda <filippo@golang.org> Reviewed-by: Daniel McCarney <daniel@binaryparadox.net>
This commit is contained in:
yuhan6665
@@ -0,0 +1,301 @@
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// Copyright 2009 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 sha512 implements the SHA-384, SHA-512, SHA-512/224, and SHA-512/256
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// hash algorithms as defined in FIPS 180-4.
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package sha512
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import (
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// "github.com/xtls/reality/fips140"
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"github.com/xtls/reality/byteorder"
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"errors"
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)
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const (
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// size512 is the size, in bytes, of a SHA-512 checksum.
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size512 = 64
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// size224 is the size, in bytes, of a SHA-512/224 checksum.
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size224 = 28
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// size256 is the size, in bytes, of a SHA-512/256 checksum.
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size256 = 32
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// size384 is the size, in bytes, of a SHA-384 checksum.
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size384 = 48
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// blockSize is the block size, in bytes, of the SHA-512/224,
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// SHA-512/256, SHA-384 and SHA-512 hash functions.
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blockSize = 128
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)
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const (
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chunk = 128
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init0 = 0x6a09e667f3bcc908
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init1 = 0xbb67ae8584caa73b
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init2 = 0x3c6ef372fe94f82b
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init3 = 0xa54ff53a5f1d36f1
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init4 = 0x510e527fade682d1
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init5 = 0x9b05688c2b3e6c1f
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init6 = 0x1f83d9abfb41bd6b
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init7 = 0x5be0cd19137e2179
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init0_224 = 0x8c3d37c819544da2
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init1_224 = 0x73e1996689dcd4d6
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init2_224 = 0x1dfab7ae32ff9c82
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init3_224 = 0x679dd514582f9fcf
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init4_224 = 0x0f6d2b697bd44da8
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init5_224 = 0x77e36f7304c48942
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init6_224 = 0x3f9d85a86a1d36c8
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init7_224 = 0x1112e6ad91d692a1
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init0_256 = 0x22312194fc2bf72c
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init1_256 = 0x9f555fa3c84c64c2
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init2_256 = 0x2393b86b6f53b151
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init3_256 = 0x963877195940eabd
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init4_256 = 0x96283ee2a88effe3
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init5_256 = 0xbe5e1e2553863992
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init6_256 = 0x2b0199fc2c85b8aa
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init7_256 = 0x0eb72ddc81c52ca2
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init0_384 = 0xcbbb9d5dc1059ed8
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init1_384 = 0x629a292a367cd507
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init2_384 = 0x9159015a3070dd17
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init3_384 = 0x152fecd8f70e5939
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init4_384 = 0x67332667ffc00b31
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init5_384 = 0x8eb44a8768581511
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init6_384 = 0xdb0c2e0d64f98fa7
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init7_384 = 0x47b5481dbefa4fa4
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)
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// Digest is a SHA-384, SHA-512, SHA-512/224, or SHA-512/256 [hash.Hash]
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// implementation.
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type Digest struct {
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h [8]uint64
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x [chunk]byte
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nx int
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len uint64
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size int // size224, size256, size384, or size512
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}
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func (d *Digest) Reset() {
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switch d.size {
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case size384:
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d.h[0] = init0_384
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d.h[1] = init1_384
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d.h[2] = init2_384
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d.h[3] = init3_384
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d.h[4] = init4_384
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d.h[5] = init5_384
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d.h[6] = init6_384
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d.h[7] = init7_384
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case size224:
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d.h[0] = init0_224
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d.h[1] = init1_224
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d.h[2] = init2_224
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d.h[3] = init3_224
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d.h[4] = init4_224
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d.h[5] = init5_224
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d.h[6] = init6_224
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d.h[7] = init7_224
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case size256:
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d.h[0] = init0_256
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d.h[1] = init1_256
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d.h[2] = init2_256
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d.h[3] = init3_256
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d.h[4] = init4_256
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d.h[5] = init5_256
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d.h[6] = init6_256
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d.h[7] = init7_256
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case size512:
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d.h[0] = init0
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d.h[1] = init1
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d.h[2] = init2
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d.h[3] = init3
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d.h[4] = init4
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d.h[5] = init5
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d.h[6] = init6
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d.h[7] = init7
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default:
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panic("unknown size")
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}
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d.nx = 0
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d.len = 0
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}
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const (
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magic384 = "sha\x04"
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magic512_224 = "sha\x05"
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magic512_256 = "sha\x06"
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magic512 = "sha\x07"
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marshaledSize = len(magic512) + 8*8 + chunk + 8
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)
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func (d *Digest) MarshalBinary() ([]byte, error) {
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return d.AppendBinary(make([]byte, 0, marshaledSize))
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}
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func (d *Digest) AppendBinary(b []byte) ([]byte, error) {
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switch d.size {
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case size384:
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b = append(b, magic384...)
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case size224:
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b = append(b, magic512_224...)
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case size256:
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b = append(b, magic512_256...)
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case size512:
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b = append(b, magic512...)
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default:
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panic("unknown size")
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}
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b = byteorder.BEAppendUint64(b, d.h[0])
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b = byteorder.BEAppendUint64(b, d.h[1])
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b = byteorder.BEAppendUint64(b, d.h[2])
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b = byteorder.BEAppendUint64(b, d.h[3])
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b = byteorder.BEAppendUint64(b, d.h[4])
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b = byteorder.BEAppendUint64(b, d.h[5])
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b = byteorder.BEAppendUint64(b, d.h[6])
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b = byteorder.BEAppendUint64(b, d.h[7])
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b = append(b, d.x[:d.nx]...)
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b = append(b, make([]byte, len(d.x)-d.nx)...)
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b = byteorder.BEAppendUint64(b, d.len)
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return b, nil
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}
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func (d *Digest) UnmarshalBinary(b []byte) error {
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if len(b) < len(magic512) {
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return errors.New("crypto/sha512: invalid hash state identifier")
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}
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switch {
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case d.size == size384 && string(b[:len(magic384)]) == magic384:
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case d.size == size224 && string(b[:len(magic512_224)]) == magic512_224:
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case d.size == size256 && string(b[:len(magic512_256)]) == magic512_256:
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case d.size == size512 && string(b[:len(magic512)]) == magic512:
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default:
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return errors.New("crypto/sha512: invalid hash state identifier")
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}
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if len(b) != marshaledSize {
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return errors.New("crypto/sha512: invalid hash state size")
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}
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b = b[len(magic512):]
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b, d.h[0] = consumeUint64(b)
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b, d.h[1] = consumeUint64(b)
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b, d.h[2] = consumeUint64(b)
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b, d.h[3] = consumeUint64(b)
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b, d.h[4] = consumeUint64(b)
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b, d.h[5] = consumeUint64(b)
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b, d.h[6] = consumeUint64(b)
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b, d.h[7] = consumeUint64(b)
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b = b[copy(d.x[:], b):]
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b, d.len = consumeUint64(b)
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d.nx = int(d.len % chunk)
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return nil
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}
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func consumeUint64(b []byte) ([]byte, uint64) {
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return b[8:], byteorder.BEUint64(b)
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}
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// New returns a new Digest computing the SHA-512 hash.
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func New() *Digest {
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d := &Digest{size: size512}
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d.Reset()
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return d
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}
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// New512_224 returns a new Digest computing the SHA-512/224 hash.
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func New512_224() *Digest {
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d := &Digest{size: size224}
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d.Reset()
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return d
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}
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// New512_256 returns a new Digest computing the SHA-512/256 hash.
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func New512_256() *Digest {
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d := &Digest{size: size256}
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d.Reset()
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return d
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}
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// New384 returns a new Digest computing the SHA-384 hash.
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func New384() *Digest {
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d := &Digest{size: size384}
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d.Reset()
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return d
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}
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func (d *Digest) Size() int {
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return d.size
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}
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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.len += uint64(nn)
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if d.nx > 0 {
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n := copy(d.x[d.nx:], p)
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d.nx += n
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if d.nx == chunk {
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block(d, d.x[:])
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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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if len(p) >= chunk {
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n := len(p) &^ (chunk - 1)
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block(d, p[:n])
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p = p[n:]
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}
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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 (d *Digest) Sum(in []byte) []byte {
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// fips140.RecordApproved()
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// Make a copy of d so that caller can keep writing and summing.
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d0 := new(Digest)
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*d0 = *d
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hash := d0.checkSum()
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return append(in, hash[:d.size]...)
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}
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func (d *Digest) checkSum() [size512]byte {
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// Padding. Add a 1 bit and 0 bits until 112 bytes mod 128.
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len := d.len
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var tmp [128 + 16]byte // padding + length buffer
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tmp[0] = 0x80
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var t uint64
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if len%128 < 112 {
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t = 112 - len%128
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} else {
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t = 128 + 112 - len%128
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}
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// Length in bits.
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len <<= 3
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padlen := tmp[:t+16]
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// Upper 64 bits are always zero, because len variable has type uint64,
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// and tmp is already zeroed at that index, so we can skip updating it.
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// byteorder.BEPutUint64(padlen[t+0:], 0)
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byteorder.BEPutUint64(padlen[t+8:], len)
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d.Write(padlen)
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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 [size512]byte
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byteorder.BEPutUint64(digest[0:], d.h[0])
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byteorder.BEPutUint64(digest[8:], d.h[1])
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byteorder.BEPutUint64(digest[16:], d.h[2])
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byteorder.BEPutUint64(digest[24:], d.h[3])
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byteorder.BEPutUint64(digest[32:], d.h[4])
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byteorder.BEPutUint64(digest[40:], d.h[5])
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if d.size != size384 {
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byteorder.BEPutUint64(digest[48:], d.h[6])
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byteorder.BEPutUint64(digest[56:], d.h[7])
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}
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return digest
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}
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@@ -0,0 +1,144 @@
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// Copyright 2009 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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|
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// SHA512 block step.
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// In its own file so that a faster assembly or C version
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// can be substituted easily.
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package sha512
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import "math/bits"
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var _K = [...]uint64{
|
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0x428a2f98d728ae22,
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0x7137449123ef65cd,
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0xb5c0fbcfec4d3b2f,
|
||||
0xe9b5dba58189dbbc,
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0x3956c25bf348b538,
|
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0x59f111f1b605d019,
|
||||
0x923f82a4af194f9b,
|
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0xab1c5ed5da6d8118,
|
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0xd807aa98a3030242,
|
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0x12835b0145706fbe,
|
||||
0x243185be4ee4b28c,
|
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0x550c7dc3d5ffb4e2,
|
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0x72be5d74f27b896f,
|
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0x80deb1fe3b1696b1,
|
||||
0x9bdc06a725c71235,
|
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0xc19bf174cf692694,
|
||||
0xe49b69c19ef14ad2,
|
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0xefbe4786384f25e3,
|
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0x0fc19dc68b8cd5b5,
|
||||
0x240ca1cc77ac9c65,
|
||||
0x2de92c6f592b0275,
|
||||
0x4a7484aa6ea6e483,
|
||||
0x5cb0a9dcbd41fbd4,
|
||||
0x76f988da831153b5,
|
||||
0x983e5152ee66dfab,
|
||||
0xa831c66d2db43210,
|
||||
0xb00327c898fb213f,
|
||||
0xbf597fc7beef0ee4,
|
||||
0xc6e00bf33da88fc2,
|
||||
0xd5a79147930aa725,
|
||||
0x06ca6351e003826f,
|
||||
0x142929670a0e6e70,
|
||||
0x27b70a8546d22ffc,
|
||||
0x2e1b21385c26c926,
|
||||
0x4d2c6dfc5ac42aed,
|
||||
0x53380d139d95b3df,
|
||||
0x650a73548baf63de,
|
||||
0x766a0abb3c77b2a8,
|
||||
0x81c2c92e47edaee6,
|
||||
0x92722c851482353b,
|
||||
0xa2bfe8a14cf10364,
|
||||
0xa81a664bbc423001,
|
||||
0xc24b8b70d0f89791,
|
||||
0xc76c51a30654be30,
|
||||
0xd192e819d6ef5218,
|
||||
0xd69906245565a910,
|
||||
0xf40e35855771202a,
|
||||
0x106aa07032bbd1b8,
|
||||
0x19a4c116b8d2d0c8,
|
||||
0x1e376c085141ab53,
|
||||
0x2748774cdf8eeb99,
|
||||
0x34b0bcb5e19b48a8,
|
||||
0x391c0cb3c5c95a63,
|
||||
0x4ed8aa4ae3418acb,
|
||||
0x5b9cca4f7763e373,
|
||||
0x682e6ff3d6b2b8a3,
|
||||
0x748f82ee5defb2fc,
|
||||
0x78a5636f43172f60,
|
||||
0x84c87814a1f0ab72,
|
||||
0x8cc702081a6439ec,
|
||||
0x90befffa23631e28,
|
||||
0xa4506cebde82bde9,
|
||||
0xbef9a3f7b2c67915,
|
||||
0xc67178f2e372532b,
|
||||
0xca273eceea26619c,
|
||||
0xd186b8c721c0c207,
|
||||
0xeada7dd6cde0eb1e,
|
||||
0xf57d4f7fee6ed178,
|
||||
0x06f067aa72176fba,
|
||||
0x0a637dc5a2c898a6,
|
||||
0x113f9804bef90dae,
|
||||
0x1b710b35131c471b,
|
||||
0x28db77f523047d84,
|
||||
0x32caab7b40c72493,
|
||||
0x3c9ebe0a15c9bebc,
|
||||
0x431d67c49c100d4c,
|
||||
0x4cc5d4becb3e42b6,
|
||||
0x597f299cfc657e2a,
|
||||
0x5fcb6fab3ad6faec,
|
||||
0x6c44198c4a475817,
|
||||
}
|
||||
|
||||
func blockGeneric(dig *Digest, p []byte) {
|
||||
var w [80]uint64
|
||||
h0, h1, h2, h3, h4, h5, h6, h7 := dig.h[0], dig.h[1], dig.h[2], dig.h[3], dig.h[4], dig.h[5], dig.h[6], dig.h[7]
|
||||
for len(p) >= chunk {
|
||||
for i := 0; i < 16; i++ {
|
||||
j := i * 8
|
||||
w[i] = uint64(p[j])<<56 | uint64(p[j+1])<<48 | uint64(p[j+2])<<40 | uint64(p[j+3])<<32 |
|
||||
uint64(p[j+4])<<24 | uint64(p[j+5])<<16 | uint64(p[j+6])<<8 | uint64(p[j+7])
|
||||
}
|
||||
for i := 16; i < 80; i++ {
|
||||
v1 := w[i-2]
|
||||
t1 := bits.RotateLeft64(v1, -19) ^ bits.RotateLeft64(v1, -61) ^ (v1 >> 6)
|
||||
v2 := w[i-15]
|
||||
t2 := bits.RotateLeft64(v2, -1) ^ bits.RotateLeft64(v2, -8) ^ (v2 >> 7)
|
||||
|
||||
w[i] = t1 + w[i-7] + t2 + w[i-16]
|
||||
}
|
||||
|
||||
a, b, c, d, e, f, g, h := h0, h1, h2, h3, h4, h5, h6, h7
|
||||
|
||||
for i := 0; i < 80; i++ {
|
||||
t1 := h + (bits.RotateLeft64(e, -14) ^ bits.RotateLeft64(e, -18) ^ bits.RotateLeft64(e, -41)) + ((e & f) ^ (^e & g)) + _K[i] + w[i]
|
||||
|
||||
t2 := (bits.RotateLeft64(a, -28) ^ bits.RotateLeft64(a, -34) ^ bits.RotateLeft64(a, -39)) + ((a & b) ^ (a & c) ^ (b & c))
|
||||
|
||||
h = g
|
||||
g = f
|
||||
f = e
|
||||
e = d + t1
|
||||
d = c
|
||||
c = b
|
||||
b = a
|
||||
a = t1 + t2
|
||||
}
|
||||
|
||||
h0 += a
|
||||
h1 += b
|
||||
h2 += c
|
||||
h3 += d
|
||||
h4 += e
|
||||
h5 += f
|
||||
h6 += g
|
||||
h7 += h
|
||||
|
||||
p = p[chunk:]
|
||||
}
|
||||
|
||||
dig.h[0], dig.h[1], dig.h[2], dig.h[3], dig.h[4], dig.h[5], dig.h[6], dig.h[7] = h0, h1, h2, h3, h4, h5, h6, h7
|
||||
}
|
||||
@@ -0,0 +1,9 @@
|
||||
// Copyright 2016 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.
|
||||
|
||||
package sha512
|
||||
|
||||
func block(dig *Digest, p []byte) {
|
||||
blockGeneric(dig, p)
|
||||
}
|
||||
Reference in New Issue
Block a user