Merge pull request #13 from dongbeiouba/examples/sm3

Add example for SM3

crypto/sm3/sm3.go

@@ -15,6 +15,12 @@
 package sm3
 
 // #include "../../shim.h"
+// #cgo linux CFLAGS: -Wno-deprecated-declarations -I/opt/tongsuo/include
+// #cgo linux LDFLAGS: -L/opt/tongsuo/lib -lssl -lcrypto
+// #cgo darwin CFLAGS: -I/opt/tongsuo/include -Wno-deprecated-declarations
+// #cgo darwin LDFLAGS: -L/opt/tongsuo/lib -lssl -lcrypto
+// #cgo windows CFLAGS: -DWIN32_LEAN_AND_MEAN
+// #cgo windows pkg-config: libssl libcrypto
 import "C"
 
 import (

examples/sm3.go

@@ -0,0 +1,35 @@
+// Copyright 2023 The Tongsuo Project Authors. All Rights Reserved.
+//
+// Licensed under the Apache License 2.0 (the "License").  You may not use
+// this file except in compliance with the License.  You can obtain a copy
+// in the file LICENSE in the source distribution or at
+// https://github.com/Tongsuo-Project/tongsuo-go-sdk/blob/main/LICENSE
+
+package main
+
+import (
+	"fmt"
+	"github.com/tongsuo-project/tongsuo-go-sdk/crypto/sm3"
+	"os"
+)
+
+func main() {
+	msg := "hello world"
+	fmt.Printf("%x\n", sm3.SM3Sum([]byte(msg)))
+
+	h, err := sm3.New()
+	if err != nil {
+		os.Exit(1)
+	}
+
+	if _, err := h.Write([]byte("hello")); err != nil {
+		os.Exit(1)
+	}
+	if _, err := h.Write([]byte(" world")); err != nil {
+		os.Exit(1)
+	}
+
+	var res [sm3.SM3_DIGEST_LENGTH]byte
+
+	fmt.Printf("%x\n", h.Sum(res[:0]))
+}