js视频地址加密

// 生成密钥
window.crypto.subtle.generateKey(
    {
        name: "AES-GCM",
        length: 256,
    },
    true,
    ["encrypt", "decrypt"]
).then(function(key){
    // 密钥保存在安全的地方，这里只是示例
    console.log(new Uint8Array(key));

    // 加密函数
    function encryptVideoUrl(url) {
        const encoder = new TextEncoder();
        const data = encoder.encode(url);
        return window.crypto.subtle.encrypt(
            {
                name: "AES-GCM",
                iv: new Uint8Array(12), // 初始化向量
            },
            key,
            data
        );
    }

    // 解密函数
    function decryptVideoUrl(encrypted) {
        return window.crypto.subtle.decrypt(
            {
                name: "AES-GCM",
                iv: new Uint8Array(12), // 必须与加密时相同
            },
            key,
            encrypted
        ).then(decrypted => {
            const decoder = new TextDecoder();
            return decoder.decode(decrypted);
        });
    }

    // 使用示例
    const videoUrl = "http://example.com/video.mp4";
    encryptVideoUrl(videoUrl).then(encrypted => {
        console.log(new Uint8Array(encrypted)); // 加密后的视频地址
        decryptVideoUrl(encrypted).then(decryptedUrl => {
            console.log(decryptedUrl); // 解密后的视频地址
        });
    });
});