v0.74.1

-   backups: Add integrityCheck to LocatorInfo

v0.74.0

- Integrate post-quantum ratchet in opt-in mode.

v0.73.3

- keytrans: Properly bridge and document errors

- keytrans: Add production configuration

- Internal improvements

- MSRV bumped to 1.83.0

v0.73.2

- Android: Fix bug which can cause CompletableFuture to be stripped by
  ProGuard/R8.

- keytrans: Bridge to ffi

v0.73.1

- Backups: the now-deprecated remote content locator fields are ignored and the new FilePointer.locator_info field must
  be set.

v0.73.0

- Support for starting sessions with pre-quantum X3DH has been removed from Swift, Java, and TypeScript. PQXDH will be required going forward.

- Bridge registration service client to Swift.

- Net/Java: Some CompletableFutures are now cancellable!

v0.72.1

- Fixes a regression introduced in v0.68.1 where incoming PreKey
  messages would fail to decrypt if the local device had archived the
  corresponding session. (This fix was also backported as v0.71.1.)

- Bridge registration service client to Swift.

v0.71.1

- Fixes a regression introduced in v0.68.1 where incoming PreKey
  messages would fail to decrypt if the local device had archived the
  corresponding session.

v0.72.0

- Swift: `sealedSenderEncrypt(message:for:from:sessionStore:identityStore:context:)` and `sealedSenderDecrypt(message:from:trustRoot:timestamp:sessionStore:identityStore:preKeyStore:signedPreKeyStore:context:)` have been removed. The former was a simple wrapper around `sealedSenderEncrypt(_:for:identityStore:context:)` for 1:1 messages that didn't expose all the features of UnidentifiedSenderMessageContent, and the latter was never updated to support PQXDH messages. The Signal iOS app does not use either function. If you were using `sealedSenderDecrypt`, switch to `UnidentifiedSenderMessageContent.init(message:identityStore:context:)`, and make sure to validate the resulting sender certificate and check for a self-send yourself before attempting to decrypt the inner message.

- The iOS minimum deployment target has been bumped to iOS 15.

- Unnecessary prefixes have been removed from file paths in log output.

- CDSI: fix handling of rate-limit-exceeded error to correctly parse the server-requested delay.

- Update incremental mac reading to support streaming videos.

v0.71.0

- A pre-key message sender's identity is stored after the message is decrypted.

- Java, Node, Swift: changed IdentityKeyStore.saveIdentity to return an enum.

- Java: Expose account registration via the registration service client.

- Node: RegistrationService.registerAccount takes account password as a string.

- net

  - Connections to Signal services (and to Cloudflare's DNS-over-HTTPS server) will now require TLS v1.3, which they would already have been using.

  - Futures returned by ChatConnection.send() will now return more specific errors on failure.

- New SVR2 enclaves for staging and production.

- keytrans

  - Bridge to Node.

  - Support multiple auditors.