PHP Tencent Cloud Server API インターフェイスのドッキング プロセス中のデータの暗号化と復号化の例

<?php
function aesEncrypt($plaintext, $key)
{
    $iv = openssl_random_pseudo_bytes(16);
    $ciphertext = openssl_encrypt($plaintext, 'AES-256-CBC', $key, OPENSSL_RAW_DATA, $iv);
    $result = base64_encode($iv . $ciphertext);
    return $result;
}

// 使用示例
$plaintext = 'This is a secret message.';
$key = 'a1b2c3d4e5f6g7h8';
$ciphertext = aesEncrypt($plaintext, $key);
echo $ciphertext;
?>

<?php
function rsaEncrypt($plaintext, $pubKey)
{
    $encrypted = '';
    openssl_public_encrypt($plaintext, $encrypted, $pubKey);
    $result = base64_encode($encrypted);
    return $result;
}

// 使用示例
$plaintext = 'This is a secret message.';
$pubKey = openssl_pkey_get_public(file_get_contents('pubkey.pem'));
$ciphertext = rsaEncrypt($plaintext, $pubKey);
echo $ciphertext;
?>

<?php
function aesDecrypt($ciphertext, $key)
{
    $ciphertext = base64_decode($ciphertext);
    $iv = substr($ciphertext, 0, 16);
    $ciphertext = substr($ciphertext, 16);
    $plaintext = openssl_decrypt($ciphertext, 'AES-256-CBC', $key, OPENSSL_RAW_DATA, $iv);
    return $plaintext;
}

// 使用示例
$ciphertext = 'abcxyz==';
$key = 'a1b2c3d4e5f6g7h8';
$plaintext = aesDecrypt($ciphertext, $key);
echo $plaintext;
?>

<?php
function rsaDecrypt($ciphertext, $privKey)
{
    $decrypted = '';
    openssl_private_decrypt(base64_decode($ciphertext), $decrypted, $privKey);
    return $decrypted;
}

// 使用示例
$ciphertext = 'abcxyz==';
$privKey = openssl_pkey_get_private(file_get_contents('privkey.pem'));
$plaintext = rsaDecrypt($ciphertext, $privKey);
echo $plaintext;
?>