compiler: build separation runtime with clite

runtime/internal/lib/crypto/sha256/sha256.go

@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sha256
+
+// llgo:skipall
+import (
+	"crypto"
+	"hash"
+	"unsafe"
+
+	c "github.com/goplus/llgo/runtime/internal/clite"
+	"github.com/goplus/llgo/runtime/internal/clite/openssl"
+)
+
+func init() {
+	crypto.RegisterHash(crypto.SHA224, New224)
+	crypto.RegisterHash(crypto.SHA256, New)
+}
+
+// The blocksize of SHA256 and SHA224 in bytes.
+const BlockSize = 64
+
+// The size of a SHA256 checksum in bytes.
+const Size = 32
+
+type digest256 struct {
+	ctx openssl.SHA256_CTX
+}
+
+func (d *digest256) Size() int { return Size }
+
+func (d *digest256) BlockSize() int { return BlockSize }
+
+func (d *digest256) Reset() {
+	d.ctx.Init()
+}
+
+func (d *digest256) Write(p []byte) (nn int, err error) {
+	d.ctx.UpdateBytes(p)
+	return len(p), nil
+}
+
+func (d *digest256) Sum(in []byte) []byte {
+	hash := (*[Size]byte)(c.Alloca(Size))
+	d.ctx.Final((*byte)(unsafe.Pointer(hash)))
+	return append(in, hash[:]...)
+}
+
+// New returns a new hash.Hash computing the SHA256 checksum.
+func New() hash.Hash {
+	d := new(digest256)
+	d.ctx.Init()
+	return d
+}
+
+// Sum256 returns the SHA256 checksum of the data.
+func Sum256(data []byte) (ret [Size]byte) {
+	openssl.SHA256Bytes(data, &ret[0])
+	return
+}