如何使用PHP和Vue实现数据加密功能

<?php
// 使用AES加密算法加密数据
function encrypt($data, $key) {
    $cipher = "aes-256-cbc";
    $iv = openssl_random_pseudo_bytes(openssl_cipher_iv_length($cipher));
    $encrypted = openssl_encrypt($data, $cipher, $key, OPENSSL_RAW_DATA, $iv);
    $result = base64_encode($iv . $encrypted);
    return $result;
}

// 使用AES加密算法解密数据
function decrypt($data, $key) {
    $cipher = "aes-256-cbc";
    $data = base64_decode($data);
    $iv = substr($data, 0, openssl_cipher_iv_length($cipher));
    $encrypted = substr($data, openssl_cipher_iv_length($cipher));
    $result = openssl_decrypt($encrypted, $cipher, $key, OPENSSL_RAW_DATA, $iv);
    return $result;
}

// 测试加密和解密
$originalData = "Hello World";
$key = "ThisIsASecretKey";

$encryptedData = encrypt($originalData, $key);
echo "加密后的数据：" . $encryptedData . "
";

$decryptedData = decrypt($encryptedData, $key);
echo "解密后的数据：" . $decryptedData . "
";
?>

<template>
    <div>
        <input v-model="originalData" type="text" placeholder="请输入要加密的数据">
        <button @click="encryptData">加密数据</button>
        <p>加密后的数据：{{ encryptedData }}</p>
        <button @click="decryptData">解密数据</button>
        <p>解密后的数据：{{ decryptedData }}</p>
    </div>
</template>

<script>
export default {
    data() {
        return {
            originalData: "",
            encryptedData: "",
            decryptedData: "",
            key: "ThisIsASecretKey",
        };
    },
    methods: {
        encryptData() {
            // 使用AES加密算法加密数据
            let cipher = "aes-256-cbc";
            let iv = crypto.getRandomValues(new Uint8Array(16));
            let enc = new TextEncoder();
            let encodedKey = enc.encode(this.key);
            let encodedData = enc.encode(this.originalData);
            crypto.subtle.encrypt(
                { name: cipher, iv: iv },
                encodedKey,
                encodedData
            )
            .then((encrypted) => {
                let ivArr = Array.from(new Uint8Array(iv));
                let encryptedArr = Array.from(new Uint8Array(encrypted));
                let resultArr = ivArr.concat(encryptedArr);
                this.encryptedData = btoa(String.fromCharCode.apply(null, resultArr));
            });
        },
        decryptData() {
            // 使用AES加密算法解密数据
            let cipher = "aes-256-cbc";
            let data = atob(this.encryptedData);
            let iv = new Uint8Array(data.slice(0, 16).split("").map((c) => c.charCodeAt(0)));
            let encrypted = new Uint8Array(data.slice(16).split("").map((c) => c.charCodeAt(0)));
            let enc = new TextEncoder();
            let encodedKey = enc.encode(this.key);
            crypto.subtle.decrypt({name: cipher, iv: iv}, encodedKey, encrypted)
                .then((decrypted) => {
                    this.decryptedData = new TextDecoder().decode(decrypted);
                });
        },
    },
};
</script>