diff options
author | Jesse Duffield <jessedduffield@gmail.com> | 2019-11-13 22:28:41 +1100 |
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committer | Jesse Duffield <jessedduffield@gmail.com> | 2019-11-14 09:41:56 +1100 |
commit | 30aed94aa8451911fc1c5ba1e52ff28b180a8d31 (patch) | |
tree | b8d68cfe129a94b42077aa2f912da519bfc95e8c /vendor | |
parent | 3b1d705473494cca9894ec051d9d928c0c8926c7 (diff) |
update go gitv0.10.6
Diffstat (limited to 'vendor')
108 files changed, 5213 insertions, 3104 deletions
diff --git a/vendor/golang.org/x/crypto/chacha20/chacha_arm64.go b/vendor/golang.org/x/crypto/chacha20/chacha_arm64.go new file mode 100644 index 000000000..87f1e369c --- /dev/null +++ b/vendor/golang.org/x/crypto/chacha20/chacha_arm64.go @@ -0,0 +1,17 @@ +// Copyright 2018 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. + +// +build go1.11 +// +build !gccgo,!appengine + +package chacha20 + +const bufSize = 256 + +//go:noescape +func xorKeyStreamVX(dst, src []byte, key *[8]uint32, nonce *[3]uint32, counter *uint32) + +func (c *Cipher) xorKeyStreamBlocks(dst, src []byte) { + xorKeyStreamVX(dst, src, &c.key, &c.nonce, &c.counter) +} diff --git a/vendor/golang.org/x/crypto/internal/chacha20/asm_arm64.s b/vendor/golang.org/x/crypto/chacha20/chacha_arm64.s index b3a16ef75..b3a16ef75 100644 --- a/vendor/golang.org/x/crypto/internal/chacha20/asm_arm64.s +++ b/vendor/golang.org/x/crypto/chacha20/chacha_arm64.s diff --git a/vendor/golang.org/x/crypto/chacha20/chacha_generic.go b/vendor/golang.org/x/crypto/chacha20/chacha_generic.go new file mode 100644 index 000000000..098ec9f6b --- /dev/null +++ b/vendor/golang.org/x/crypto/chacha20/chacha_generic.go @@ -0,0 +1,364 @@ +// 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 chacha20 implements the ChaCha20 and XChaCha20 encryption algorithms +// as specified in RFC 8439 and draft-irtf-cfrg-xchacha-01. +package chacha20 + +import ( + "crypto/cipher" + "encoding/binary" + "errors" + "math/bits" + + "golang.org/x/crypto/internal/subtle" +) + +const ( + // KeySize is the size of the key used by this cipher, in bytes. + KeySize = 32 + + // NonceSize is the size of the nonce used with the standard variant of this + // cipher, in bytes. + // + // Note that this is too short to be safely generated at random if the same + // key is reused more than 2³² times. + NonceSize = 12 + + // NonceSizeX is the size of the nonce used with the XChaCha20 variant of + // this cipher, in bytes. + NonceSizeX = 24 +) + +// Cipher is a stateful instance of ChaCha20 or XChaCha20 using a particular key +// and nonce. A *Cipher implements the cipher.Stream interface. +type Cipher struct { + // The ChaCha20 state is 16 words: 4 constant, 8 of key, 1 of counter + // (incremented after each block), and 3 of nonce. + key [8]uint32 + counter uint32 + nonce [3]uint32 + + // The last len bytes of buf are leftover key stream bytes from the previous + // XORKeyStream invocation. The size of buf depends on how many blocks are + // computed at a time. + buf [bufSize]byte + len int + + // The counter-independent results of the first round are cached after they + // are computed the first time. + precompDone bool + p1, p5, p9, p13 uint32 + p2, p6, p10, p14 uint32 + p3, p7, p11, p15 uint32 +} + +var _ cipher.Stream = (*Cipher)(nil) + +// NewUnauthenticatedCipher creates a new ChaCha20 stream cipher with the given +// 32 bytes key and a 12 or 24 bytes nonce. If a nonce of 24 bytes is provided, +// the XChaCha20 construction will be used. It returns an error if key or nonce +// have any other length. +// +// Note that ChaCha20, like all stream ciphers, is not authenticated and allows +// attackers to silently tamper with the plaintext. For this reason, it is more +// appropriate as a building block than as a standalone encryption mechanism. +// Instead, consider using package golang.org/x/crypto/chacha20poly1305. +func NewUnauthenticatedCipher(key, nonce []byte) (*Cipher, error) { + // This function is split into a wrapper so that the Cipher allocation will + // be inlined, and depending on how the caller uses the return value, won't + // escape to the heap. + c := &Cipher{} + return newUnauthenticatedCipher(c, key, nonce) +} + +func newUnauthenticatedCipher(c *Cipher, key, nonce []byte) (*Cipher, error) { + if len(key) != KeySize { + return nil, errors.New("chacha20: wrong key size") + } + if len(nonce) == NonceSizeX { + // XChaCha20 uses the ChaCha20 core to mix 16 bytes of the nonce into a + // derived key, allowing it to operate on a nonce of 24 bytes. See + // draft-irtf-cfrg-xchacha-01, Section 2.3. + key, _ = HChaCha20(key, nonce[0:16]) + cNonce := make([]byte, NonceSize) + copy(cNonce[4:12], nonce[16:24]) + nonce = cNonce + } else if len(nonce) != NonceSize { + return nil, errors.New("chacha20: wrong nonce size") + } + + c.key = [8]uint32{ + binary.LittleEndian.Uint32(key[0:4]), + binary.LittleEndian.Uint32(key[4:8]), + binary.LittleEndian.Uint32(key[8:12]), + binary.LittleEndian.Uint32(key[12:16]), + binary.LittleEndian.Uint32(key[16:20]), + binary.LittleEndian.Uint32(key[20:24]), + binary.LittleEndian.Uint32(key[24:28]), + binary.LittleEndian.Uint32(key[28:32]), + } + c.nonce = [3]uint32{ + binary.LittleEndian.Uint32(nonce[0:4]), + binary.LittleEndian.Uint32(nonce[4:8]), + binary.LittleEndian.Uint32(nonce[8:12]), + } + return c, nil +} + +// The constant first 4 words of the ChaCha20 state. +const ( + j0 uint32 = 0x61707865 // expa + j1 uint32 = 0x3320646e // nd 3 + j2 uint32 = 0x79622d32 // 2-by + j3 uint32 = 0x6b206574 // te k |