Class GCM

Example

const crypto = import.meta.use('crypto');

const key = crypto.randomBytes(32);
const iv = crypto.randomBytes(12);
const aad = new TextEncoder().encode('Additional authenticated data');

// Encryption
const encryptor = new crypto.GCM('encrypt', key, iv);
encryptor.setAAD(aad);
const ciphertext1 = encryptor.update(new TextEncoder().encode('Hello '));
const ciphertext2 = encryptor.update(new TextEncoder().encode('World'));
const result = encryptor.final();
// result = { data: ArrayBuffer, tag: ArrayBuffer }

// Decryption
const decryptor = new crypto.GCM('decrypt', key, iv);
decryptor.setAAD(aad);
const plaintext1 = decryptor.update(ciphertext1);
const plaintext2 = decryptor.update(ciphertext2);
const decryptResult = decryptor.final(result.tag);
// decryptResult = { data: ArrayBuffer, verified: boolean }
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