0.8.0

What's Changed

Features

• Apply const keyword to many methods (#167).

• [BREAKING] The Account::sign() method now accepts an impl AsRef<[u8]>
  for the message instead of a &str. This has been streamlined to be like
  most of our other methods accepting a message to be encrypted. This
  change is mostly backwards compatible as the method will continue to
  accept a string.
  The OlmMessage::from_parts() and OlmMessage::to_parts() methods now
  accept and return an &[u8] and Vec<u8> exclusively for the
  ciphertext. The base64_encode() and base64_decode() methods can be
  used to achieve the previous behavior (#176).

• Add support for the libolm PkEncryption feature. This allows
  Matrix clients to implement the m.megolm_backup.v1.curve25519-aes-sha2
  room key backup algorithm. Please note that this algorithm contains a
  critical flaw and should only be used for compatibility reasons (171) (#180).

Refactor

• Remove the pkcs7 crate from the list of dependencies (#164).

• Remove Debug implementations for the libolm compat structs (#184).

0.7.0

What's Changed

Features

• Add an Elliptic Curve Integrated Encryption Scheme. This scheme can be used to establish a secure ephemeral encrypted channel, in situations for which Olm may be unsuitable due to complexity or the unavailability of long-term identity keys. There is also support for out-of-band authentication of the receiver side. The scheme was designed primarily for purposes of implementing Matrix QR code login. (#151).

Security

• Use a constant-time Base64 encoder for secret key material to mitigate side-channel attacks leaking secret key material (#156) (Low, CVE-2024-40640, GHSA-j8cm-g7r6-hfpq).