微信小程序-RSA签名、验签、加密、解密

title: 【小程序】RSA签名

type: categories

date: 2017-05-27 17:01:15

categories: 小程序

tags: [RSA, 签名]

一个适用于微信小程序的RSA签名加密库。

RSA签名的小程序DEMO：https://github.com/zhangzhaopds/WeixinApp_RSA_Signature.git

使用

1、引入文件

var RSA = require('../../utils/wxapp_rsa.js')

2、调用

var privateKey_pkcs1 = '-----BEGIN RSA PRIVATE KEY-----MIICXQIBAAKBgQCk7WKdggwBOtteLL5sPom8RYCjuw0hy6R1jH39tCaep1Dns02bi4CYHk2dSR / t0ABgF5pHYeMxHa74Dp6Z6SjfAKMUu53BbTR615ehK + 03BjtzJzviTF1 / NtLmGaR3aawrDp7oQgq33dfIYbWLuAMkHNiWaoXaGyHh3a8jS2vxfQIDAQABAoGAIKRnLzts + tVWU5ZRfgUGp7 + tzToZSEYQ378VtJ / yQNZmueUQCCgdJH5i6C1v51aSrHIfc99Y4wC3/ 5qNI3M1RlRpIakmcaiEv1m6huDPLKFq6Y1e+ AZ0Cb0xo3bny + VTOvfGgcAdSa6++K47bGaxyKzwGeNZQkltm5sgbVcKvkECQQDVjWbSU8P8nDb+TP5Aqr + DaMVA425wv2ra2jhxd6KqKxgHHB7yYWlODiYNrtALOEG9zfSpHVQWhZpiKq8XcWwRAkEAxbWzPAqZxaZ / XTs65uCL0 + iqif0qCSDUNis61wYm2UwOh4LqBZIFop94B3ybEXbCvUl0v26H0fgXjFUErvlKrQJBAKjbAe5U5accLi + t2WxwlrXlZfME4hKsiGU8H10455n+ MSWOCrpEY + ugLF6tVztH5FOcQlRmKFMWmRf + ACxdNsECQDBjkEKZtZkSbwm6fWgUfSSYRWUQeUFSr52yZuxJrShx3Px9phlG6 + opbY8niCx2DKOXXuObgdJ6DglipYrNqOECQQCndP + zU / jwlvjQzEabKdP05uFc5JV6ySFBQwuoENbEvW3uz + Yz31xDYbrwIzrysVDovlj0ExL6LC + JRvpJmHcN-----END RSA PRIVATE KEY-----'
var publicKey_pkcs1 = '-----BEGIN PUBLIC KEY-----MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCk7WKdggwBOtteLL5sPom8RYCjuw0hy6R1jH39tCaep1Dns02bi4CYHk2dSR / t0ABgF5pHYeMxHa74Dp6Z6SjfAKMUu53BbTR615ehK + 03BjtzJzviTF1/ NtLmGaR3aawrDp7oQgq33dfIYbWLuAMkHNiWaoXaGyHh3a8jS2vxfQIDAQAB-----END PUBLIC KEY-----'

// 加签
var sign_rsa = new RSA.RSAKey();
sign_rsa = RSA.KEYUTIL.getKey(privateKey_pkcs1);
console.log('签名RSA:')
console.log(sign_rsa)
var hashAlg = 'sha1';
var hSig = sign_rsa.signString("signData", hashAlg);
hSig = RSA.hex2b64(hSig); // hex 转 b64
console.log("签名结果：" + hSig)

// 验签
var verify_rsa = new RSA.RSAKey();
verify_rsa = RSA.KEYUTIL.getKey(publicKey_pkcs1);
console.log('验签RSA:')
console.log(verify_rsa)
hSig = RSA.b64tohex(hSig)
var ver = verify_rsa.verifyString("signData", hSig)
console.log('验签结果：' + ver)

// 加密
var encrypt_rsa = new RSA.RSAKey();
encrypt_rsa = RSA.KEYUTIL.getKey(publicKey_pkcs1);
console.log('加密RSA:')
console.log(encrypt_rsa)
var encStr = encrypt_rsa.encrypt('123456')
encStr = RSA.hex2b64(encStr);
console.log("加密结果：" + encStr)

// 解密
var decrypt_rsa = new RSA.RSAKey();
decrypt_rsa = RSA.KEYUTIL.getKey(privateKey_pkcs1);
console.log('解密RSA:')
console.log(decrypt_rsa)
encStr = RSA.b64tohex(encStr)
var decStr = decrypt_rsa.decrypt(encStr)
console.log("解密结果：" + decStr)

需要注意的是：区分RSA私钥的类型，有pkcs1和pkcs8。pkcs8格式的私钥主要用于java中。

// pkcs1格式：
-----BEGIN RSA PRIVATE KEY-----
-----END RSA PRIVATE KEY------

// pkcs8格式：
-----BEGIN PRIVATE KEY-----
-----END PRIVATE KEY-----