sm-crypto

Small procedure JS library.DETATIVE SM2, SM3 and SM4.

Use this component to rely on applets 2.2.1 or later, while relying on the NPM build of the developer tool.For details, please refer to the official NPM documentation.

Install

npm install --save miniprogram-sm-crypto

sm2

Get key pair

const sm2 = require('miniprogram-sm-crypto').sm2;

let keypair = sm2.generateKeyPairHex();

publicKey = keypair.publicKey; // 公钥
privateKey = keypair.privateKey; // 私钥

encrypt and decode

const sm2 = require('miniprogram-sm-crypto').sm2;
const cipherMode = 1; // 1 - C1C3C2，0 - C1C2C3，默认为1

let encryptData = sm2.doEncrypt(msgString, publicKey, cipherMode); // 加密结果
let decryptData = sm2.doDecrypt(encryptData, privateKey, cipherMode); // 解密结果

Signature inspection

PS: In theory, only pure signatures is the fastest.

const sm2 = require('miniprogram-sm-crypto').sm2;

// 纯签名 + 生成椭圆曲线点
let sigValueHex = sm2.doSignature(msg, privateKey); // 签名
let verifyResult = sm2.doVerifySignature(msg, sigValueHex, publicKey); // 验签结果

// 纯签名
let sigValueHex2 = sm2.doSignature(msg, privateKey, {
    pointPool: [sm2.getPoint(), sm2.getPoint(), sm2.getPoint(), sm2.getPoint()], // 传入事先已生成好的椭圆曲线点，可加快签名速度
}); // 签名
let verifyResult2 = sm2.doVerifySignature(msg, sigValueHex2, publicKey); // 验签结果

// 纯签名 + 生成椭圆曲线点 + der编解码
let sigValueHex3 = sm2.doSignature(msg, privateKey, {
    der: true,
}); // 签名
let verifyResult3 = sm2.doVerifySignature(msg, sigValueHex3, publicKey, {
    der: true,
}); // 验签结果

// 纯签名 + 生成椭圆曲线点 + sm3杂凑
let sigValueHex4 = sm2.doSignature(msg, privateKey, {
    hash: true,
}); // 签名
let verifyResult4 = sm2.doVerifySignature(msg, sigValueHex4, publicKey, {
    hash: true,
}); // 验签结果

// 纯签名 + 生成椭圆曲线点 + sm3杂凑（不做公钥推导）
let sigValueHex5 = sm2.doSignature(msg, privateKey, {
    hash: true,
    publicKey, // 传入公钥的话，可以去掉sm3杂凑中推导公钥的过程，速度会比纯签名 + 生成椭圆曲线点 + sm3杂凑快
});
let verifyResult5 = sm2.doVerifySignature(msg, sigValueHex5, publicKey, {
    hash: true,
    publicKey,
});

Gets the elliptical curve point

const sm2 = require('miniprogram-sm-crypto').sm2;

let poin = sm2.getPoint(); // 获取一个椭圆曲线点，可在sm2签名时传入

sm3

const sm3 = require('miniprogram-sm-crypto').sm3;

let hashData = sm3('abc'); // 杂凑

sm4

Encryption

const sm4 = require('miniprogram-sm-crypto').sm4;
const key = [0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10];

let encryptData = sm4.encrypt([0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10], key); // 加密

Decrypt

const sm4 = require('miniprogram-sm-crypto').sm4;
const key = [0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10];

let decryptData = sm4.decrypt([0x68, 0x1e, 0xdf, 0x34, 0xd2, 0x06, 0x96, 0x5e, 0x86, 0xb3, 0xe9, 0x4f, 0x53, 0x6e, 0x42, 0x46], 

Example of a state-secret algorithm implementation: Details