PHP gnupg加密解密

<?php

一：环境安装gpg
     https://blog.csdn.net/leyangjun/article/details/83146592


二：安装扩展
     下载安装地址：http://pecl.php.net/package/gnupg 下载后解压安装


三：PHP使用gpg解密例子

1：面向对象形式
$gpg = new gnupg(); //如果没有找到gnupg类，new \gnupg()命名空间冲突原因找不到
$gpg->seterrormode(gnupg::ERROR_EXCEPTION);

$publicKeyData = file_get_contents('/User/leyangjun/gpg.leyangjun_public.key');//导入对应的公钥，就是gpp生成的
$publicInfo = $gpg -> import($publicKeyData);

$privateKeyData = file_get_contents('/User/leyangjun/gpg.leyangjun_private.key');//导入私钥用于解密，导入后会自动找该私密解密
$gpg -> import($privateKeyData);


$cipherText = file_get_contents('/User/leyangjun/leyangjun.txt.gpg');//需要解密的文件
$gpg->adddecryptkey($publicInfo['fingerprint'], '');//fingerprint为钥匙指纹
try {
    $plaintext = $gpg->decrypt($ciphertext);  var_dump($plaintext);
} catch (Exception $e) {
    die('ERROR: ' . $e->getMessage());
}


//===========================================================================

2：面向过程形式
$gpg = gnupg_init();
$publicPath = Gpg::getPath('gpg_meitu_public');
$publicKey = file_get_contents('/User/leyangjun/gpg.leyangjun_public.key');//导入公钥
$publicInfo = gnupg_import($gpg,$publicKey);


$privateKey = file_get_contents('/User/leyangjun/gpg.leyangjun_private.key');//导入私钥
gnupg_import($gpg,$privateKey);

$DecryptFile = '/User/leyangjun/leyangjun.txt.gpg';
$cipherText = file_get_contents($DecryptFile);
gnupg_adddecryptkey($publicInfo['fingerprint'], '');
try {
    $plainText = gnupg_decrypt($gpg,$cipherText);
    var_dump($plainText);

}catch (Exception $e) {
    die('ERROR: ' . $e->getMessage());
}