| // Copyright 2017 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. |
| |
| //go:build boringcrypto && linux && (amd64 || arm64) && !android && !msan |
| |
| package boring |
| |
| // #include "goboringcrypto.h" |
| import "C" |
| import "unsafe" |
| |
| type randReader int |
| |
| func (randReader) Read(b []byte) (int, error) { |
| // Note: RAND_bytes should never fail; the return value exists only for historical reasons. |
| // We check it even so. |
| if len(b) > 0 && C._goboringcrypto_RAND_bytes((*C.uint8_t)(unsafe.Pointer(&b[0])), C.size_t(len(b))) == 0 { |
| return 0, fail("RAND_bytes") |
| } |
| return len(b), nil |
| } |
| |
| const RandReader = randReader(0) |
