WEB端RSA加密介绍，jsencrypt、node-forge、node-rsa用法及对比

非对称加密算法：一般公钥加密，私钥解密。其实还有其他用法，详情参考RSA算法
对称加密算法：加密解密使用相同的密钥。

jsencrypt 加密

import JSEncrypt from'jsencrypt';const encrypt =newJSEncrypt();//加密前设置公钥
encrypt.setPublicKey(publicKty);//加密const encrypted = encrypt.encrypt(plaintext);

jsencrypt 解密

import JSEncrypt from'jsencrypt';const encrypt =newJSEncrypt();//解密前设置私钥
encrypt.setPrivateKey(privateKey);const decrypted = encrypt.decrypt(encrypted);

注意：jsencrypt 默认加密解密都 encode64 格式

node-forge 加密

import forge from'node-forge';const publicObj = forge.pki.publicKeyFromPem(publicKey);const bytes = publicObj.encrypt(plaintext);//转换成 bytes 对象之后输出不同类型的结果const encrypted = forge.util.encode64(bytes);//encode64//const encrypted = forge.util.bytesToHex(encryptedBytes); //hex

node-forge 解密

import forge from'node-forge';const privateObj = forge.pki.privateKeyFromPem(privateKey);const bytes = forge.util.decode64(encrypted);//const bytes = forge.util.bytesToHex(encrypted);//需要转换成 bytes 对象再解密const decrypted = privateObj.decrypt(bytes);

明文

const plaintext ='Hello World';

Public Key 公钥

const publicKey =`-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCKYbNglYAgZvW2DuVpyvqIjmK4
yOr2kYDqPQpvTxf3yY3ymtpEV1MG0tZ2bSgd9ThiRZXN/V1LqIxS0vu2AHSc32jX
AZ89xe/H8YPt1UzDacC5tvKhyxo5skKBGMOdIWX4tYJ4tOVaTyPF6rOfpeWe7tY3
G6qqlFv4QhmIBoOPLwIDAQAB
-----END PUBLIC KEY-----`;

Private Key 私钥

const privateKey =`-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----`

环境支持

库browserNode.js维护情况jsencrypt✅❌✅node-forge✅✅✅node-rsa✅✅❌
注意：node-rsa不建议使用