Function recover_public_key

utils/src/crypto.rs:209–219

Recover a public key using a recoverable signature and signed message ```rust use utils::crypto::{keypair, recover_public_key, sign_recovery}; let (private_key, public_key) = keypair(); let message = b"The message"; let signature = sign_recovery(message, &private_key).unwrap(); let (recovery_id, serialized_signature) = signature.serialize_compact(); let recovered_public_key = recover_public_key(

(message: &[u8], signature: &[u8], recovery_id: i32)

/// assert_eq!(recovered_public_key, public_key);
/// ```
pub fn recover_public_key(message: &[u8], signature: &[u8], recovery_id: i32) -> Result<PublicKey> {
    let message = hash_message(message)?;
    let recovery_id = RecoveryId::from_i32(recovery_id)
        .map_err(|e| UtilsError::ConversionError(e.to_string()))?;
    let signature = RecoverableSignature::from_compact(signature, recovery_id)
        .map_err(|e| UtilsError::VerifyError(e.to_string()))?;

    CONTEXT
        .recover_ecdsa(&message, &signature)
        .map_err(|e| UtilsError::RecoverError(e.to_string()))
}

/// Recover the address of the public key using a recoverable signature and signed message
///