libsignal-node

Platform-agnostic APIs used by the official Signal clients and servers

libsignal contains platform-agnostic APIs used by the official Signal clients and servers, exposed as a Java, Swift, or TypeScript library. The underlying implementations are written in Rust: - libsignal-protocol: Implements the Signal protocol, including the Double Ratchet algorithm. A replacement for libsignal-protocol-java and libsignal-metadata-java. - signal-crypto: Cryptographic primitives such as AES-GCM. We use RustCrypto's where we can but sometimes have differing needs. - device-transfer: Support logic for Signal's device-to-device transfer feature. - attest: Functionality for remote attestation of SGX enclaves and server-side HSMs. - zkgroup: Functionality for zero-knowledge groups and related features available in Signal. - poksho: Utilities for implementing zero-knowledge proofs (such as those used by zkgroup); stands for "proof-of-knowledge, stateful-hash-object".