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Josh Perez 2021-07-19 15:26:06 -04:00 • committed by GitHub
parent f14c426170
commit cd35a29638
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
42 changed files with 2124 additions and 356 deletions
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28
ts/textsecure/Crypto.ts
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@ -117,7 +117,14 @@ declare global {
const PROFILE_IV_LENGTH = 12; // bytes
const PROFILE_KEY_LENGTH = 32; // bytes
const PROFILE_TAG_LENGTH = 128; // bits
const PROFILE_NAME_PADDED_LENGTH = 53; // bytes
// bytes
export const PaddedLengths = {
Name: [53, 257],
About: [128, 254, 512],
AboutEmoji: [32],
PaymentAddress: [554],
};
type EncryptedAttachment = {
ciphertext: ArrayBuffer;
@ -324,13 +331,20 @@ const Crypto = {
);
},
async encryptProfileName(
name: ArrayBuffer,
key: ArrayBuffer
async encryptProfileItemWithPadding(
item: ArrayBuffer,
profileKey: ArrayBuffer,
paddedLengths: typeof PaddedLengths[keyof typeof PaddedLengths]
): Promise<ArrayBuffer> {
const padded = new Uint8Array(PROFILE_NAME_PADDED_LENGTH);
padded.set(new Uint8Array(name));
return Crypto.encryptProfile(padded.buffer as ArrayBuffer, key);
const paddedLength = paddedLengths.find(
(length: number) => item.byteLength <= length
);
if (!paddedLength) {
throw new Error('Oversized value');
}
const padded = new Uint8Array(paddedLength);
padded.set(new Uint8Array(item));
return Crypto.encryptProfile(padded.buffer as ArrayBuffer, profileKey);
},
async decryptProfileName(