go 签名算法crypto.SHA256

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package main    const MyKey = `MIIEvQIBADANBgkqSkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQDj/3+USBaoVSSklSdmnKAEmFIIarRzt/fJXixNUWsCfBCCOO+pURwAlqNvRVQqE2dtcr5uE0DCa。。。。。。。。。`     /*格式化key*/ func FormatPrivateKey(privateKey string) string {       PEM_BEGIN := "-----BEGIN RSA PRIVATE KEY-----\n"     PEM_END := "\n-----END RSA PRIVATE KEY-----"       if !strings.HasPrefix(privateKey, PEM_BEGIN) {         privateKey = PEM_BEGIN + privateKey     }     if !strings.HasSuffix(privateKey, PEM_END) {         privateKey = privateKey + PEM_END     }     //fmt.Println(privateKey)     return privateKey }   /*获取RSA算法的私钥 *rsa.PrivateKey */ func ParsePrivateKey(privateKey string) (*rsa.PrivateKey, error) {     privateKey = FormatPrivateKey(privateKey)     //  解码私钥字节，生成加密对象     block, _ := pem.Decode([]byte(privateKey))     if block == nil {         return nil, errors.New("私钥信息错误1！")     }     //  解析DER编码的私钥，生成私钥对象     priKey, err := x509.ParsePKCS8PrivateKey(block.Bytes)     if err != nil {         return nil, err     }     if PrivateKey, ok := priKey.(*rsa.PrivateKey); ok {         return PrivateKey, nil     } else {         return nil, errors.New("私钥信息错误2")     }   }   /*生成签名*/ func RsaEncrypt(signContent string, privateKey string, hash crypto.Hash) string {     shaNew := hash.New()     shaNew.Write([]byte(signContent))     hashed := shaNew.Sum(nil)     priKey, err := ParsePrivateKey(privateKey)     if err != nil {         panic(err)     }       signature, err := rsa.SignPKCS1v15(rand.Reader, priKey, hash, hashed)     if err != nil {         panic(err)     }     return base64.StdEncoding.EncodeToString(signature) }     func main() { 　　argus_string :=`{"uid": "100"，"pid":20}` 　　sign := RsaEncrypt(argus_string, MyKey, crypto.SHA256) 　　fmt.Println(sign)   }