node-rsa加密，java解密調試

用NODE RSA JS 加密解密正常，用JAVA RSAUtils工具類加密解密正常。可是用node加密玩的java解密不了。緣由：node默認的是

DEFAULT_ENCRYPTION_SCHEME = 'pkcs1_oaep'  而java中默認的是pkcs1。

node-rsa源碼：https://github.com/rzcoder/node-rsa/blob/ea5c17d9351c857c0594d7921c596ff5636882f1/src/NodeRSA.js

var DEFAULT_ENCRYPTION_SCHEME = 'pkcs1_oaep';

node-rsa官方文檔：https://www.npmjs.com/package/node-rsa

Options

You can specify some options by second/third constructor argument, or over key.setOptions()method.

• environment — working environment (default autodetect):
  • 'browser' — will run pure js implementation of RSA algorithms.
  • 'node' for nodejs >= 0.10.x or io.js >= 1.x — provide some native methods like sign/verify and encrypt/decrypt.
• encryptionScheme — padding scheme for encrypt/decrypt. Can be 'pkcs1_oaep' or 'pkcs1'. Default 'pkcs1_oaep'.
• signingScheme — scheme used for signing and verifying. Can be 'pkcs1' or 'pss' or 'scheme-hash' format string (eg 'pss-sha1'). Default 'pkcs1-sha256', or, if chosen pss: 'pss-sha1'.

Notice: This lib supporting next hash algorithms: 'md5', 'ripemd160', 'sha1', 'sha256', 'sha512' in browser and node environment and additional 'md4', 'sha', 'sha224', 'sha384' in node only.

 

因此要保持一致：

import NodeRSA from 'node-rsa'; const rsa_encrypt = (data) => { let key = new NodeRSA('-----BEGIN PUBLIC KEY-----\n' + 'MIGfMA0。。。。。。。AQAB\n' + '-----END PUBLIC KEY-----'); // key.generateKeyPair(1024);
    key.setOptions({encryptionScheme: 'pkcs1'}) let encryptKey = key.encrypt(data, 'base64') return encryptKey; }

後臺：

public static byte[] decryptByPrivateKey(byte[] encryptedData, String privateKey) throws Exception { byte[] keyBytes = Base64Utils.decode(privateKey); PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(keyBytes); KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); Key privateK = keyFactory.generatePrivate(pkcs8KeySpec); Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm()); cipher.init(Cipher.DECRYPT_MODE, privateK); int inputLen = encryptedData.length; ByteArrayOutputStream out = new ByteArrayOutputStream(); int offSet = 0; byte[] cache; int i = 0; // 對數據分段解密
        while (inputLen - offSet > 0) { if (inputLen - offSet > MAX_DECRYPT_BLOCK) { cache = cipher.doFinal(encryptedData, offSet, MAX_DECRYPT_BLOCK); } else { cache = cipher.doFinal(encryptedData, offSet, inputLen - offSet); } out.write(cache, 0, cache.length); i++; offSet = i * MAX_DECRYPT_BLOCK; } byte[] decryptedData = out.toByteArray(); out.close(); return decryptedData; }

 參考：https://blog.csdn.net/mshootingstar/article/details/56496719