Module solana_sdk::secp256k1_recover

Public key recovery from secp256k1 ECDSA signatures.

This module provides low-level cryptographic building blocks that must be used carefully to ensure proper security. Read this documentation and accompanying links thoroughly.

The secp256k1_recover syscall allows a secp256k1 public key that has previously signed a message to be recovered from the combination of the message, the signature, and a recovery ID. The recovery ID is generated during signing.

Use cases for secp256k1_recover include:

• Implementing the Ethereum ecrecover builtin contract.
• Performing secp256k1 public key recovery generally.
• Verifying a single secp256k1 signature.

While secp256k1_recover can be used to verify secp256k1 signatures, Solana also provides the secp256k1 program, which is more flexible, has lower CPU cost, and can validate many signatures at once.

Structs

Secp256k1Pubkey

Enums

Secp256k1RecoverError

Constants

SECP256K1_PUBLIC_KEY_LENGTH

SECP256K1_SIGNATURE_LENGTH

Functions

secp256k1_recover

Recover the public key from a secp256k1 ECDSA signature and cryptographically-hashed message.