Crate solana_keychain 

Framework-agnostic Solana signing abstractions

This crate provides a unified interface for signing Solana transactions with multiple backend implementations (memory, Vault, Privy, Turnkey, AWS KMS, Fireblocks, GCP KMS, Dfns, Crossmint, CDP, Para, Openfort, Utila).

Features

Signer Backends

• memory (default): Local keypair signing
• vault: HashiCorp Vault integration
• privy: Privy API integration
• turnkey: Turnkey API integration
• aws_kms: AWS KMS integration with EdDSA (Ed25519) signing
• fireblocks: Fireblocks API integration
• gcp_kms: GCP KMS integration with EdDSA (Ed25519) signing
• cdp: Coinbase Developer Platform integration
• para: Para MPC wallet integration
• dfns: Dfns Wallet API integration
• crossmint: Crossmint wallet integration
• openfort: Openfort backend wallet integration
• utila: Utila MPC wallet integration
• all: Enable all signer backends

SDK Version Selection

• sdk-v2 (default): Use Solana SDK v2.3.x
• sdk-v3: Use Solana SDK v3.x

Note: Only one SDK version can be enabled at a time.

Re-exports

pub use error::SignerError;

pub use http_client_config::HttpClientConfig;

pub use traits::SignTransactionResult;

pub use traits::SolanaSigner;

pub use memory::MemorySigner;

pub use memory::MemorySignerConfig;

Modules

error

Error types for signer operations

http_client_config

Shared HTTP timeout configuration for remote signers.

memory

Memory-based local keypair signer

signature_util

traits

Core trait definitions for Solana signers

transaction_util

Enums

Signer

Unified signer enum supporting multiple backends