nodejs aes-128-ccm

以下是使用Node.js实现AES-128-CCM加密的示例代码：

const crypto = require('crypto');

function encrypt(plainText, key, nonce) {
    const cipher = crypto.createCipheriv('aes-128-ccm', key, nonce, {
        authTagLength: 16
    });
    const encrypted = Buffer.concat([cipher.update(plainText, 'utf8'), cipher.final()]);
    const tag = cipher.getAuthTag();
    return {
        encrypted: encrypted.toString('base64'),
        tag: tag.toString('base64')
    };
}

function decrypt(encryptedText, key, nonce, tag) {
    const decipher = crypto.createDecipheriv('aes-128-ccm', key, nonce, {
        authTagLength: 16
    });
    decipher.setAuthTag(Buffer.from(tag, 'base64'));
    const decrypted = Buffer.concat([decipher.update(Buffer.from(encryptedText, 'base64')), decipher.final()]);
    return decrypted.toString('utf8');
}

// 示例使用
const plainText = 'Hello, World!';
const key = crypto.randomBytes(16); // 128-bit key
const nonce = crypto.randomBytes(12); // 96-bit nonce

const encryptedData = encrypt(plainText, key, nonce);
console.log('加密后的数据:', encryptedData);

const decryptedText = decrypt(encryptedData.encrypted, key, nonce, encryptedData.tag);
console.log('解密后的数据:', decryptedText);

请注意，这只是一个简单的示例，实际使用时需要根据具体需求进行适当的调整和处理。