Module signing 

Signing flow orchestration for the TxGate signing service.

This module provides the SigningService that orchestrates the complete signing flow: parsing, policy checking, and signing.

Flow Overview

The signing service performs the following steps:

1. Parse - Transform raw transaction bytes into a ParsedTx
2. Check - Evaluate the transaction against policy rules
3. Sign - If allowed, sign the transaction hash

Example

use txgate_core::signing::{SigningService, SigningResult};
use txgate_chain::Chain;
use txgate_policy::PolicyEngine;
use txgate_crypto::Signer;

// Create the service with your implementations
let service = SigningService::new(chain, policy, signer);

// Sign a transaction
let result = service.sign(&raw_tx_bytes)?;

// Or just check policy without signing (dry run)
let result = service.check(&raw_tx_bytes)?;

Thread Safety

SigningService is Send + Sync when all its components are, allowing it to be shared across async tasks.

Structs

SigningResult

Comprehensive result of a signing operation.

SigningService

Orchestrates the signing flow: parsing, policy checking, and signing.

Enums

PolicyCheckResult

Detailed result of a policy check operation.

SigningError

Errors that can occur during the signing flow.

Traits

ChainParser

Trait for chain parsers.

PolicyEngineExt

Trait for policy engines.

SignerExt

Trait for signers.

Type Aliases

SignatureBytes

Signature as a 64-byte array (r || s without recovery ID).