node-rsa加密，java解密调试

用NODE RSA JS 加密解密正常，用JAVA RSAUtils工具类加密解密正常。但是用node加密玩的java解密不了。原因：node默认的是

DEFAULT_ENCRYPTION_SCHEME = 'pkcs1_oaep' 而java中默认的是pkcs1。

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

var DEFAULT_ENCRYPTION_SCHEME = 'pkcs1_oaep';

node-rsa官方文档：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.

所以要保持一致：

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;

}

后台：

    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;

        // 对数据分段解密

        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;

    }

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

巴特西

node-rsa加密，java解密调试

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