Crate txgate_crypto 

txgate-crypto

Cryptographic operations for the TxGate signing service.

Internal Crate Warning

This crate is an internal implementation detail of txgate.

It is published to crates.io only because Cargo requires all dependencies to be published. The API is unstable and may change without notice between any versions, including patch releases.

Do not depend on this crate directly. Instead:

• For the signing server binary: cargo install txgate
• For programmatic access: Open an issue at https://github.com/luisjpf/txgate to discuss a stable public API.

This crate provides all cryptographic functionality:

Modules (planned)

• keys - Key generation, storage, and management
• signing - Transaction signing implementations
• verify - Signature verification
• kms - Key Management Service integrations (AWS KMS, HashiCorp Vault, etc.)
• algorithms - Supported cryptographic algorithms (ECDSA, EdDSA, etc.)

Supported Algorithms (planned)

• ECDSA (secp256k1) - Bitcoin, Ethereum, EVM chains
• EdDSA (Ed25519) - Solana, NEAR, etc.
• SR25519 - Substrate-based chains

Security

This crate follows best practices for cryptographic implementations:

• No unsafe code allowed
• Constant-time operations where applicable
• Secure memory handling for key material

Re-exports

pub use encryption::decrypt_key;

pub use encryption::encrypt_key;

pub use encryption::EncryptedKey;

pub use encryption::ENCRYPTED_KEY_LEN;

pub use encryption::ENCRYPTION_VERSION;

pub use encryption::NONCE_LEN;

pub use encryption::PLAINTEXT_LEN;

pub use encryption::SALT_LEN;

pub use encryption::TAG_LEN;

pub use keys::SecretKey;

pub use keys::SecretKeyError;

pub use keys::SECRET_KEY_LEN;

pub use keypair::Ed25519KeyPair;

pub use keypair::Ed25519PublicKey;

pub use keypair::Ed25519Signature;

pub use keypair::KeyPair;

pub use keypair::Secp256k1KeyPair;

pub use keypair::Secp256k1PublicKey;

pub use keypair::Secp256k1Signature;

pub use signer::Chain;

pub use signer::CurveType;

pub use signer::Ed25519Signer;

pub use signer::Secp256k1Signer;

pub use signer::Signer;

pub use store::FileKeyStore;

pub use store::KeyStore;

Modules

encryption

AEAD encryption for key material at rest.

keypair

Cryptographic key pair traits and implementations.

keys

Cryptographic key types with secure memory handling.

signer

High-level signing traits and implementations.

store

Key storage traits and implementations.