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use crate::types::{Error, SignatureScheme};

/// Sign the provided payload and return a signature.
pub trait Signer {
    /// Sign the provided payload.
    ///
    /// Returns a signature on success or an Error.
    fn sign(&self, payload: &[u8]) -> Result<Vec<u8>, Error>;

    /// The [`SignatureScheme`] of this signer.
    fn signature_scheme(&self) -> SignatureScheme;
}