Current File : //usr/local/go119/src/crypto/internal/boring/rand.go
// 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 && !android && !cmd_go_bootstrap && !msan
// +build boringcrypto,linux,amd64,!android,!cmd_go_bootstrap,!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)
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