Flexible, framework-agnostic Solana transaction signing for Rust applications
⚠️ SECURITY NOTICE: This library has not been audited. Use at your own risk. Not recommended for production use with real funds without a thorough security review. The authors and contributors are not responsible for any loss of funds or damages resulting from the use of this library.
solana-signers provides a unified interface for signing Solana transactions with multiple backend implementations. Whether you need local keypairs for development, enterprise vault integration, or managed wallet services, this library offers a consistent API across all signing methods.
- Unified Interface: Single
SolanaSignertrait for all backends - Async-First: Built with
async/awaitfor modern Rust applications - Modular: Feature flags for zero-cost backend selection
- Type-Safe: Compile-time guarantees and error handling
- Minimal Dependencies: Only include what you use
| Backend | Use Case | Feature Flag |
|---|---|---|
| Memory | Local keypairs, development, testing | memory (default) |
| Vault | Enterprise key management with HashiCorp Vault | vault |
| Privy | Embedded wallets with Privy infrastructure | privy |
| Turnkey | Non-custodial key management via Turnkey | turnkey |
[dependencies]
# Basic usage (memory signer only)
solana-signers = "0.1"
# With Vault support
solana-signers = { version = "0.1", features = ["vault"] }
# All backends
solana-signers = { version = "0.1", features = ["all"] }use solana_signers::{MemorySigner, SolanaSigner};
#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
// Create signer from private key
let signer = MemorySigner::from_private_key_string(
"[41,99,180,88,51,57,48,80,61,63,219,75,176,49,116,254...]"
)?;
// Get public key
let pubkey = signer.pubkey();
println!("Public key: {}", pubkey);
// Sign a message
let message = b"Hello Solana!";
let signature = signer.sign_message(message).await?;
println!("Signature: {}", signature);
Ok(())
}All signers implement the SolanaSigner trait:
#[async_trait]
pub trait SolanaSigner: Send + Sync {
/// Get the public key of this signer
fn pubkey(&self) -> Pubkey;
/// Sign a Solana transaction (modifies transaction in place)
async fn sign_transaction(&self, tx: &mut Transaction) -> Result<Signature, SignerError>;
/// Sign arbitrary message bytes
async fn sign_message(&self, message: &[u8]) -> Result<Signature, SignerError>;
/// Check if the signer is available and healthy
async fn is_available(&self) -> bool;
}make build
make test
make fmtInterested in adding a new signer backend? Check out our guide for adding new signers.