非对称加密提交表单到PHP

首先用openssl工具生成一对RSA非对称密钥

openssl genrsa -out rsa_1024_priv.pem 1024

openssl rsa -pubout -in rsa_1024_priv.pem -out rsa_1024_pub.pem

然后在前端引入jsencrypt库,用于非对称加密,再绑定submit的onclick事件,对表单需加密数据进行加密处理

Title

username:

password:

var form_ele = document.getElementById('form');

var password_ele = form_ele.querySelector('[name=password]');

var submit_ele = form_ele.querySelector('[type=submit]');

submit_ele.onclick = function (e) {

var password = password_ele.value;

var encrypt = new JSEncrypt();

var publickey = '-----BEGIN PUBLIC KEY-----\

MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC7xzfMsVgFc/q1wUQ7vAUU7CD8\

W5eq0PnJb0Hv7Py1GQ+qYaqiasOqOr6T2FizbzSbXd+ZirEiZVdtFX9nKK4OlVHR\

zDSGulioUESLUuNQau0BeWFsEwxCMIMkAMM1fI5zDMp1PvxULdC5hFTLDXNCf5DY\

Yl4Xkc1LNsa4XYQV1QIDAQAB\

-----END PUBLIC KEY-----';

encrypt.setPublicKey(publickey);

password = encrypt.encrypt(password);

password_ele.value = password;

form_ele.submit();

return false;

}

然后就可以在后端PHP中通过openssl_private_decrypt方法解析传输过来的加密数据了

$privatekey = '-----BEGIN RSA PRIVATE KEY-----

MIICXAIBAAKBgQC7xzfMsVgFc/q1wUQ7vAUU7CD8W5eq0PnJb0Hv7Py1GQ+qYaqi

asOqOr6T2FizbzSbXd+ZirEiZVdtFX9nKK4OlVHRzDSGulioUESLUuNQau0BeWFs

EwxCMIMkAMM1fI5zDMp1PvxULdC5hFTLDXNCf5DYYl4Xkc1LNsa4XYQV1QIDAQAB

AoGARRGwGqCYydixPS2LlZVBIUMBlxFxpikb19YOoNvA0DQZqQgnpXoz4medNfB8

H/Qlm4hZ+LYlFYvFLqCbriwuaRl3utzULP6XxVjI8NlLbbg+sXquDAJVtiIFVpBs

VNbvBFFMG9kwM0UnfRTcLDVu5kPH8PSpkuEF6BKRS2oyXcECQQDgteyUuDvMejIR

sYHf+GDOhtY6Ncy25cEgk07xSNz84uRhMBe2lVI9rTEmE2lSVSBBfsdKwums2VOK

bj8uJQYJAkEA1ezLEKCdOWN8VZLe8jQIGoPX7kYqIo1BiaUa+8eER/tMZlCsXDPQ

wRBfRBiiDGO9KAWR8i0vRMGTYAnol31kbQJAN1DxdUbJCbQHAU4GH6FgC1csA1Zd

F6UFXsSEiWcbZ3FfMQGKxNqLTT2GPM5IfgkQkK7p1mCW74LsSsaK7QwWKQJAHJ+n

eB0VjHU8ULLrM9s0bl/Px6kJwD/IUiOOXbwPfhYo3dPTjC6+suZ+6LynCiNaTv2X

zqCvH3MLRiFtRr/XbQJBANDOugkjgfTQKt2yHWEPMp+pNeRyPIycuHQq+ejoTp+G

y0SXaEGYTNdLpZ4D1mCVea/4qnhlnW8ir7KEC6ecI0I=

-----END RSA PRIVATE KEY-----';

if (openssl_private_decrypt(base64_decode($_POST['password']), $decrypted, $privatekey)) {

echo $decrypted . "\n";

} else {

echo 'error';

}