58 lines
1.2 KiB
TypeScript
58 lines
1.2 KiB
TypeScript
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// Copyright 2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import crypto from 'crypto';
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import { typedArrayToArrayBuffer as toArrayBuffer } from '../Crypto';
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export function sign(key: ArrayBuffer, data: ArrayBuffer): ArrayBuffer {
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return toArrayBuffer(
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crypto
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.createHmac('sha256', Buffer.from(key))
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.update(Buffer.from(data))
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.digest()
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);
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}
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export function hash(data: ArrayBuffer): ArrayBuffer {
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return toArrayBuffer(
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crypto.createHash('sha512').update(Buffer.from(data)).digest()
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);
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}
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export function encrypt(
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key: ArrayBuffer,
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data: ArrayBuffer,
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iv: ArrayBuffer
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): ArrayBuffer {
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const cipher = crypto.createCipheriv(
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'aes-256-cbc',
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Buffer.from(key),
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Buffer.from(iv)
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);
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const encrypted = Buffer.concat([
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cipher.update(Buffer.from(data)),
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cipher.final(),
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]);
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return toArrayBuffer(encrypted);
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}
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export function decrypt(
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key: ArrayBuffer,
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data: ArrayBuffer,
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iv: ArrayBuffer
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): ArrayBuffer {
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const cipher = crypto.createDecipheriv(
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'aes-256-cbc',
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Buffer.from(key),
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Buffer.from(iv)
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);
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const decrypted = Buffer.concat([
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cipher.update(Buffer.from(data)),
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cipher.final(),
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]);
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return toArrayBuffer(decrypted);
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}
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