txgate-crypto

Cryptographic operations for the TxGate transaction signing service.

Warning

This is an internal crate with an unstable API.

This crate is published to crates.io only as a dependency of the txgate binary. The API may change without notice between versions.

Do not depend on this crate directly. Use the txgate crate instead.

What's Inside

Key Management

• Secp256k1Signer - ECDSA signing for Ethereum and Bitcoin
• Ed25519Signer - EdDSA signing for Solana
• Secure key generation with proper entropy

Address Derivation

• Ethereum addresses (EIP-55 checksummed)
• Bitcoin P2WPKH addresses (bech32)
• Solana addresses (base58-encoded ed25519 public keys)

Security Features

• All secret types implement Zeroize and ZeroizeOnDrop
• Constant-time signature verification
• Argon2id key derivation for encrypted storage
• ChaCha20-Poly1305 authenticated encryption

License

Licensed under either of:

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.