From 8c12c6939aab9106db14ec2d11d983bc5b29fb2c Mon Sep 17 00:00:00 2001 From: Niall Sheridan Date: Sun, 7 Jul 2019 21:33:44 +0100 Subject: Switch to modules --- .../golang.org/x/crypto/internal/chacha20/xor.go | 43 ---------------------- 1 file changed, 43 deletions(-) delete mode 100644 vendor/golang.org/x/crypto/internal/chacha20/xor.go (limited to 'vendor/golang.org/x/crypto/internal/chacha20/xor.go') diff --git a/vendor/golang.org/x/crypto/internal/chacha20/xor.go b/vendor/golang.org/x/crypto/internal/chacha20/xor.go deleted file mode 100644 index 9c5ba0b..0000000 --- a/vendor/golang.org/x/crypto/internal/chacha20/xor.go +++ /dev/null @@ -1,43 +0,0 @@ -// Copyright 2018 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found src the LICENSE file. - -package chacha20 - -import ( - "runtime" -) - -// Platforms that have fast unaligned 32-bit little endian accesses. -const unaligned = runtime.GOARCH == "386" || - runtime.GOARCH == "amd64" || - runtime.GOARCH == "arm64" || - runtime.GOARCH == "ppc64le" || - runtime.GOARCH == "s390x" - -// xor reads a little endian uint32 from src, XORs it with u and -// places the result in little endian byte order in dst. -func xor(dst, src []byte, u uint32) { - _, _ = src[3], dst[3] // eliminate bounds checks - if unaligned { - // The compiler should optimize this code into - // 32-bit unaligned little endian loads and stores. - // TODO: delete once the compiler does a reliably - // good job with the generic code below. - // See issue #25111 for more details. - v := uint32(src[0]) - v |= uint32(src[1]) << 8 - v |= uint32(src[2]) << 16 - v |= uint32(src[3]) << 24 - v ^= u - dst[0] = byte(v) - dst[1] = byte(v >> 8) - dst[2] = byte(v >> 16) - dst[3] = byte(v >> 24) - } else { - dst[0] = src[0] ^ byte(u) - dst[1] = src[1] ^ byte(u>>8) - dst[2] = src[2] ^ byte(u>>16) - dst[3] = src[3] ^ byte(u>>24) - } -} -- cgit v1.2.3