golang :rsa加密

golang的 rsa加密可以参考如下

func Sign(pk, context string) string {
	block, _ := pem.Decode([]byte(pk))
	if block == nil {
		panic("私钥错误")
	}
	private, err := x509.ParsePKCS1PrivateKey(block.Bytes)
	if err != nil {
		panic("PrivateKey error")
	}
	h := crypto.Hash.New(crypto.SHA1)
	h.Write([]byte(context))
	hashed := h.Sum(nil)
	// 进行rsa加密签名
	signedData, err := rsa.SignPKCS1v15(rand.Reader, private, crypto.SHA1, hashed)

	data := base64.StdEncoding.EncodeToString(signedData)
	return data
}

入参是私钥和加密消息