小程序RSA加密、解密、加簽、驗簽

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

// RSA加簽

var sign_rsa = new RSA.RSAKey();

//privateKey_pkcs1需要是-----BEGIN PRIVATE KEY-----開頭的私鑰

sign_rsa = RSA.KEYUTIL.getKey(privateKey_pkcs1);

console.log('簽名RSA:')

console.log(sign_rsa)

var hashAlg = 'MD5withRSA';

var hSig = sign_rsa.signString("12345678901234567890", hashAlg);

hSig = RSA.hex2b64(hSig); // hex 轉 b64

console.log("簽名結果：" + hSig)

//?RSA 驗簽

var verify_rsa = new RSA.RSAKey();

verify_rsa = RSA.KEYUTIL.getKey(publicKey_pkcs1);

console.log('驗簽RSA:')

console.log(verify_rsa)

hSig = RSA.b64tohex(hSig)

var ver = verify_rsa.verifyString("12345678901234567890", hSig)

console.log('驗簽結果：' + ver)

// ?RSA加密 加密字段長度不大於117

var encrypt_rsa = new RSA.RSAKey();

encrypt_rsa = RSA.KEYUTIL.getKey(rsa_public_key);

console.log('加密RSA:')

console.log(encrypt_rsa)

var encStr = encrypt_rsa.encrypt('1234567890')

console.log(encStr)

encStr = RSA.hex2b64(encStr);

console.log("加密結果：" + encStr)

//?RSA 解密

var decrypt_rsa = new RSA.RSAKey();

decrypt_rsa = RSA.KEYUTIL.getKey(rsa_public_key_private);

console.log('解密RSA:')

console.log(decrypt_rsa)

encStr = RSA.b64tohex(encStr)

var decStr = decrypt_rsa.decrypt(encStr)

console.log("解密結果：" + decStr)