Nodejs crypto模块公钥加密私钥解密探索

1.公钥加密私钥解密是什么？ 简单一点来说一般加密解密都用的是同一个秘钥或者根本不用，而这里采用的是加密用一个秘钥，解密用另一个秘钥且能解密成功．这就属于不对称加密解密算法的一种了．

2.生成公钥秘钥 由于这种加密方案，公钥秘钥是成对的，需要一些工具来生成

利用 openssl 生成公钥私钥 生成公钥： openssl genrsa -out rsa_private_key.pem 1024 生成私钥: openssl rsa -in rsa_private_key.pem -pubout -out rsa_public_key.pem

3.直接贴代码，直接掉用。 crypto 里面的方法只是写作中需要注意的一点

const crypto = require('crypto') const fs = require('fs')  const publicKey = fs.readFileSync('./openssl/rsa_public_key.pem').toString('ascii'); const privateKey = fs.readFileSync('./openssl/rsa_private_key.pem').toString('ascii'); console.log(publicKey) console.log(privateKey) const data = "alex"; console.log("content: ", data) ///公钥加密 const encodeData = crypto.publicEncrypt(publicKey, Buffer.from(data)).toString('base64'); console.log("encode: ", encodeData) //私钥解密 const decodeData = crypto.privateDecrypt(privateKey, Buffer.from(encodeData.toString('base64'), 'base64')); console.log("decode: ", decodeData.toString())

4.粘贴操作结果

-----BEGIN PUBLIC KEY----- MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC/rzb20kypDANTLSMU30PeoWwP ZVltVZC3tm6Nh5jlqmldB4hez02ojg qOfSxvi1SNvlij3rNSKhMnJOofvBlj8/H nSNX25EBlhC0/8vSkiHuePxGG04oCXvsWTNMJ2W9U54rno0IM2KDrFP5UZDxR8ft jGOK3tJnuJO2TUQhawIDAQAB -----END PUBLIC KEY-----  -----BEGIN RSA PRIVATE KEY----- MIICXAIBAAKBgQC/rzb20kypDANTLSMU30PeoWwPZVltVZC3tm6Nh5jlqmldB4he z02ojg qOfSxvi1SNvlij3rNSKhMnJOofvBlj8/HnSNX25EBlhC0/8vSkiHuePxG G04oCXvsWTNMJ2W9U54rno0IM2KDrFP5UZDxR8ftjGOK3tJnuJO2TUQhawIDAQAB AoGADpPMokir 88mEZVFLbks Clehm02t9HiB5agIbNGNXEYQjLodA1f4omrN07h BQNpfu8fWBeBR0tXQTxHHnFI5s6vNs8Y8jZu22hNJlI5B3Q2b4P1IgJfVzLK9qqv 958i  SOj3d0gpCeUXnDBZhyuK/FA82vKKDwj/j3Gm4zcgECQQDfkuXPcknDiZkK 5wXF3l7KDkEDMFLo3Rvzl0gklUJ1qxi4oKqMluDR/ynfAcL DjXMzE0 sQjhHkau /uiHxYlhAkEA23xKrGuLCzxSZb2vQi3hOgI6R/JE/pjTRQmMfj3D4n5 afciQDDP l5Vf9i5 4UKSQs499MmbDUHZDIFQ/eYiSwJAWdYPHeJQnY/GvUjDWxTVhd9gZEWg qw1d0 2wAXMwd1O 5UE6BrABuqALVR7CGY/gMmDNkSlV5g9iW6L2EMhhQQJAYRTt Aq7e5a1c1Nu99YvNn5b0qHYkxmhaqqK6new8BKbmy4AgijwM1oOf2oheXszPXPVU uj2ic464rqtUY7mzWQJBALRpxw3qroCNSw9OcgNpunSD os9DVHTi32EQ4SW6lSR ve6eLn43rqXO/C40priPf/7iQ6h1JJAD9usSt5FhGp4= -----END RSA PRIVATE KEY-----  content:  alex encode:  FHwyQV5vt6XdMc6Lv50wyvpv1asfUAZuRxVh7Nn7hiHUJeKnSLxOrE Hy2tig8pK6WO4fMq1Xvs0GrxlmNL5 5tb2MG0qyOg0v4qf5Yzo1u2GYQT1PROrWFjh/kNZgMiCfqW7aAeLWv8s6ntOg8kIvrk3yVjZxtYZswqDsLZ1HA= decode:  alex

５．一些参考 =>

https://www.cnblogs.com/sunws/p/4783358.html https://blog.csdn.net/wherwh/article/details/46699767

//crypto 公钥加密私钥解密的主要方法 crypto.privateDecrypt(private_key, buffer) crypto.privateEncrypt(private_key, buffer) crypto.publicDecrypt(public_key, buffer) crypto.publicEncrypt(public_key, buffer)