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Attachments: support for incrementalMac and chunkSize

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Scott Nonnenberg 2024-10-09 23:13:41 +10:00 • committed by GitHub
parent dbf057856f
commit b51a0e0298
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19 changed files with 322 additions and 69 deletions
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6
ts/textsecure/downloadAttachment.ts
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@ -113,7 +113,7 @@ export async function downloadAttachment(
): Promise<ReencryptedAttachmentV2 & { size?: number }> {
const logId = `downloadAttachment/${options.logPrefix ?? ''}`;
const { digest, key, size } = attachment;
const { chunkSize, digest, incrementalMac, key, size } = attachment;
strictAssert(digest, `${logId}: missing digest`);
strictAssert(key, `${logId}: missing key`);
@ -232,6 +232,10 @@ export async function downloadAttachment(
macKey,
size,
theirDigest: Bytes.fromBase64(digest),
theirIncrementalMac: incrementalMac
? Bytes.fromBase64(incrementalMac)
: undefined,
theirChunkSize: chunkSize,
outerEncryption:
mediaTier === 'backup'
? getBackupMediaOuterEncryptionKeyMaterial(attachment)