@nfen/webcrypto-ts/lib/aes/aes_gcm.js

Enforced Webcrypto wrapper

import * as proxy from "../proxy.js";
import { AesShared, Alg, } from "./shared.js";
/** @hidden */
export const handler = {
    get(target, prop) {
        switch (prop) {
            case "self":
                return target;
            case "encrypt":
                return (algorithm, data) => encrypt(algorithm, target, data);
            case "decrypt":
                return (algorithm, data) => decrypt(algorithm, target, data);
            case "wrapKey":
                return (format, key, wrapAlgorithm) => wrapKey(format, key, target, wrapAlgorithm);
            case "unwrapKey":
                return (format, wrappedKey, wrappedKeyAlgorithm, unwrappingKeyAlgorithm, extractable, keyUsages) => unwrapKey(format, wrappedKey, wrappedKeyAlgorithm, target, unwrappingKeyAlgorithm, extractable, keyUsages);
            case "exportKey":
                return (format) => exportKey(format, target);
        }
        return Reflect.get(target, prop);
    },
};
/**
 * Generate a new AES_GCM key
 * @example
 * ```ts
 * const key = await AES_GCM.generateKey();
 * ```
 */
export async function generateKey(algorithm = {
    length: 256,
}, extractable = true, keyUsages) {
    const key = await AesShared.generateKey({
        ...algorithm,
        name: Alg.Mode.AES_GCM,
    }, extractable, keyUsages);
    return proxy.proxifyKey(handler)(key);
}
/**
 * Import an AES_GCM key from the specified format
 * @example
 * ```ts
 * const key = await AES_GCM.importKey("jwk", jwk, { length: 256 });
 * ```
 */
export async function importKey(format, key, algorithm, extractable, keyUsages) {
    const importedKey = (await AesShared.importKey(format, key, {
        ...algorithm,
        name: Alg.Mode.AES_GCM,
    }, extractable, keyUsages));
    return proxy.proxifyKey(handler)(importedKey);
}
/**
 * Export an AES_GCM key into the specified format
 * @example
 * ```ts
 * const key = await AES_GCM.generateKey();
 * const jwk = await AES_GCM.exportKey("jwk", key.self);
 * ```
 * @example
 * ```ts
 * const key = await AES_GCM.generateKey();
 * const jwk = await key.exportKey("jwk");
 * ```
 */
export const exportKey = async (format, key) => AesShared.exportKey(format, key);
/**
 * Encrypt with an AES_GCM key
 * @example
 * ```ts
 * const iv = await Random.IV.generate();
 * const key = await AES_GCM.generateKey();
 * const message = new TextEncoder().encode("a message");
 * const data = await AES_GCM.encrypt({iv}, key.self, message);
 * ```
 * @example
 * ```ts
 * const iv = await Random.IV.generate();
 * const key = await AES_GCM.generateKey();
 * const message = new TextEncoder().encode("a message");
 * const data = await key.encrypt({iv}, message);
 * ```
 */
export async function encrypt(algorithm, key, data) {
    return await AesShared.encrypt({
        ...algorithm,
        name: Alg.Mode.AES_GCM,
    }, key, data);
}
/**
 * Decrypt with an AES_GCM key
 * @example
 * ```ts
 * const key = await AES_GCM.generateKey();
 * const data = await AES_GCM.decrypt({iv}, key.self, data);
 * ```
 * @example
 * ```ts
 * const key = await AES_GCM.generateKey();
 * const data = await key.decrypt({iv}, data);
 * ```
 */
export async function decrypt(algorithm, key, data) {
    return await AesShared.decrypt({
        ...algorithm,
        name: Alg.Mode.AES_GCM,
    }, key, data);
}
/**
 * Wrap another key with an AES_GCM key
 * @example
 * ```ts
 * const iv = await Random.IV.generate();
 * const kek = await AES_GCM.generateKey({length: 256}, true, ['wrapKey', 'unwrapKey']);
 * const dek = await AES_GCM.generateKey();
 * const wrappedKey = await AES_GCM.wrapKey("raw", dek.self, kek.self, {iv});
 * ```
 * @example
 * ```ts
 * const iv = await Random.IV.generate();
 * const kek = await AES_GCM.generateKey({length: 256}, true, ['wrapKey', 'unwrapKey']);
 * const dek = await AES_GCM.generateKey();
 * const wrappedKey = await kek.wrapKey("raw", dek.self, {iv});
 * ```
 */
export async function wrapKey(format, key, wrappingkey, wrapAlgorithm) {
    return await AesShared.wrapKey(format, key, wrappingkey, {
        ...wrapAlgorithm,
        name: Alg.Mode.AES_GCM,
    });
}
/**
 * Unwrap a wrapped key using the key encryption key
 * @example
 * ```ts
 * const dek = await AES_GCM.unwrapKey("raw", wrappedKey, {name: "AES_GCM"}, kek, {iv});
 * ```
 * @example
 * ```ts
 * const dek = await kek.unwrapKey("raw", wrappedKey, {name: "AES_GCM"}, {iv});
 * ```
 */
export async function unwrapKey(format, wrappedKey, wrappedKeyAlgorithm, unwrappingKey, unwrappingKeyAlgorithm, extractable = true, keyUsages) {
    return await AesShared.unwrapKey(format, wrappedKey, wrappedKeyAlgorithm, unwrappingKey, {
        ...unwrappingKeyAlgorithm,
        name: Alg.Mode.AES_GCM,
    }, extractable, keyUsages);
}
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