Function sign

utils/src/crypto.rs:152–155

Sign a message with a private key ```rust use utils::crypto::{keypair, sign}; let (private_key, public_key) = keypair(); let message = b"The message"; let signature = sign(message, &private_key); ```

(message: &[u8], key: &SecretKey)

/// let signature = sign(message, &private_key);
/// ```
pub fn sign(message: &[u8], key: &SecretKey) -> Result<EcdsaSignature> {
    let message = hash_message(message)?;
    Ok(CONTEXT.sign_ecdsa(&message, key))
}

/// Sign a recoverable message with a private key
///