用node.js sm2加密，最新gmsm sm2无法解密

[bh4rtp]

我用的node.js国密库是gm-crypto 0.1.18，node.js生成的密钥对： 公钥： 0415af270dd4fc0f466a1c216700a95ee61624bec779e4069017e822b588a4f94cb28c7bf13fe77f39c61a5f351881702babe4a6673221369a3f6ec015e416806c 私钥： b0ddcacb1298e68be276abec9a260740d45dcbb879dce0240ff03185b11d197b 密文（base64）： Y3yYFxgGvqyjf6E/riw0AAR5ynRO17/Z3OwacPvMe+e6nQ2TnKYPGo8Nq829NQCqZUuzAs+V1Z0BcKnsBorv8hHtQJ7jhkOMYFAbfQljH2SQQqbErT+0Nhep34TXtnrQopm9RHTag/tcvB51+g== 哪位成功对接过node.js与golang的国密库，请指点，谢谢？

[bh4rtp]

node.js测试代码：

const { SM2 } = require('gm-crypto')

const { publicKey, privateKey } = SM2.generateKeyPair()
const originalData = 'SM2 Algorithm'

console.log(publicKey);
console.log(privateKey);

const encryptedData = SM2.encrypt(originalData, publicKey, {
  inputEncoding: 'utf8',
  outputEncoding: 'base64',
  mode: 'C1C3C2'
})

console.log(encryptedData);  // publicKey, privateKey, encryptedData提供给gmsm解密

const decryptedData = SM2.decrypt(encryptedData, privateKey, {
  inputEncoding: 'base64',
  outputEncoding: 'utf8',
  mode: 'C1C3C2'
})

console.log(decryptedData);

[bh4rtp]

golang测试代码：

import (
        "encoding/base64"
        "fmt"
        "github.com/tjfoc/gmsm/sm2"
        "math/big"
        "strings"
)

func generateSM2Keys(privateKeyStr, publicKeyStr string) (*sm2.PublicKey, *sm2.PrivateKey) {
        publicKey := generateSM2PublicKey(publicKeyStr)

        privateKeyStr = strings.TrimLeft(privateKeyStr, "0")
        d, _ := new(big.Int).SetString(privateKeyStr[:], 16)

        privateKey := &sm2.PrivateKey{
                PublicKey: *publicKey,
                D:         d,
        }

        return publicKey, privateKey
}

func generateSM2PublicKey(publicKeyStr string) *sm2.PublicKey {
        publicKeyStr = strings.TrimLeft(strings.TrimPrefix(publicKeyStr, "04"), "0")

        x, _ := new(big.Int).SetString(publicKeyStr[0:64], 16)
        y, _ := new(big.Int).SetString(publicKeyStr[64:], 16)

        return &sm2.PublicKey{
                Curve: sm2.P256Sm2(),
                X:     x,
                Y:     y,
        }
}

func main() {
        pubKeyStr := "0415af270dd4fc0f466a1c216700a95ee61624bec779e4069017e822b588a4f94cb28c7bf13fe77f39c61a5f351881702babe4a6673221369a3f6ec015e416806c"
        priKeyStr := "b0ddcacb1298e68be276abec9a260740d45dcbb879dce0240ff03185b11d197b"
        encryptedData := "Y3yYFxgGvqyjf6E/riw0AAR5ynRO17/Z3OwacPvMe+e6nQ2TnKYPGo8Nq829NQCqZUuzAs+V1Z0BcKnsBorv8hHtQJ7jhkOMYFAbfQljH2SQQqbErT+0Nhep34TXtnrQopm9RHTag/tcvB51+g=="

        _, priKey := generateSM2Keys(priKeyStr, pubKeyStr)

        encryptedBytes, err := base64.StdEncoding.DecodeString(encryptedData)
        decryptedData, err := sm2.Decrypt(priKey, encryptedBytes, sm2.C1C3C2)
        fmt.Printf("clear text = %s\n", decryptedData)
}

[tkblack]

Add prefix of byte(0x04) to your encrypted data.