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Calls Tab & Group Call Disposition

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Jamie Kyle 2023-08-08 17:53:06 -07:00 • committed by GitHub
parent 620e85ca01
commit 1eaabb6734
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139 changed files with 9182 additions and 2721 deletions
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62
ts/Crypto.ts
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@ -7,13 +7,9 @@ import { HKDF } from '@signalapp/libsignal-client';
import * as Bytes from './Bytes';
import { calculateAgreement, generateKeyPair } from './Curve';
import * as log from './logging/log';
import { HashType, CipherType } from './types/Crypto';
import { ProfileDecryptError } from './types/errors';
import { UUID, UUID_BYTE_SIZE } from './types/UUID';
import type { UUIDStringType } from './types/UUID';
export { uuidToBytes } from './util/uuidToBytes';
import { getBytesSubarray } from './util/uuidToBytes';
export { HashType, CipherType };
@ -199,12 +195,16 @@ export function decryptSymmetric(
const iv = getZeroes(IV_LENGTH);
const nonce = getFirstBytes(data, NONCE_LENGTH);
const ciphertext = getBytes(
const ciphertext = getBytesSubarray(
data,
NONCE_LENGTH,
data.byteLength - NONCE_LENGTH - MAC_LENGTH
);
const theirMac = getBytes(data, data.byteLength - MAC_LENGTH, MAC_LENGTH);
const theirMac = getBytesSubarray(
data,
data.byteLength - MAC_LENGTH,
MAC_LENGTH
);
const cipherKey = hmacSha256(key, nonce);
const macKey = hmacSha256(key, cipherKey);
@ -353,52 +353,6 @@ export function getFirstBytes(data: Uint8Array, n: number): Uint8Array {
return data.subarray(0, n);
}
export function getBytes(
data: Uint8Array,
start: number,
n: number
): Uint8Array {
return data.subarray(start, start + n);
}
export function bytesToUuid(bytes: Uint8Array): undefined | UUIDStringType {
if (bytes.byteLength !== UUID_BYTE_SIZE) {
log.warn(
'bytesToUuid: received an Uint8Array of invalid length. ' +
'Returning undefined'
);
return undefined;
}
const uuids = splitUuids(bytes);
if (uuids.length === 1) {
return uuids[0] || undefined;
}
return undefined;
}
export function splitUuids(buffer: Uint8Array): Array<UUIDStringType | null> {
const uuids = new Array<UUIDStringType | null>();
for (let i = 0; i < buffer.byteLength; i += UUID_BYTE_SIZE) {
const bytes = getBytes(buffer, i, UUID_BYTE_SIZE);
const hex = Bytes.toHex(bytes);
const chunks = [
hex.substring(0, 8),
hex.substring(8, 12),
hex.substring(12, 16),
hex.substring(16, 20),
hex.substring(20),
];
const uuid = chunks.join('-');
if (uuid !== '00000000-0000-0000-0000-000000000000') {
uuids.push(UUID.cast(uuid));
} else {
uuids.push(null);
}
}
return uuids;
}
export function trimForDisplay(padded: Uint8Array): Uint8Array {
let paddingEnd = 0;
for (paddingEnd; paddingEnd < padded.length; paddingEnd += 1) {
@ -588,7 +542,7 @@ export function decryptProfileName(
// SignalContext APIs
//
const { crypto } = window.SignalContext;
const { crypto } = globalThis.window?.SignalContext ?? {};
export function sign(key: Uint8Array, data: Uint8Array): Uint8Array {
return crypto.sign(key, data);