Trait RandomizedPrehashSigner 

pub trait RandomizedPrehashSigner<S> {
    // Required method
    fn sign_prehash_with_rng(
        &self,
        rng: &mut impl CryptoRngCore,
        prehash: &[u8],
    ) -> Result<S, Error>;
}

Sign the provided message prehash using the provided external randomness source, returning a digital signature.

Required Methods

fn sign_prehash_with_rng( &self, rng: &mut impl CryptoRngCore, prehash: &[u8], ) -> Result<S, Error>

Attempt to sign the given message digest, returning a digital signature on success, or an error if something went wrong.

The prehash parameter should be the output of a secure cryptographic hash function.

This API takes a prehash byte slice as there can potentially be many compatible lengths for the message digest for a given concrete signature algorithm.

Allowed lengths are algorithm-dependent and up to a particular implementation to decide.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<C> RandomizedPrehashSigner<Signature<C>> for SigningKey<C>

where C: PrimeCurve + CurveArithmetic + DigestPrimitive, <C as CurveArithmetic>::Scalar: Invert<Output = CtOption<<C as CurveArithmetic>::Scalar>> + SignPrimitive<C>, <<C as Curve>::FieldBytesSize as Add>::Output: ArrayLength<u8> + Add<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B1>>, <<<C as Curve>::FieldBytesSize as Add>::Output as Add<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B1>>>::Output: ArrayLength<u8>,

Available on crate feature der only.

fn sign_prehash_with_rng( &self, rng: &mut impl CryptoRngCore, prehash: &[u8], ) -> Result<Signature<C>, Error>

impl<C> RandomizedPrehashSigner<Signature<C>> for SigningKey<C>

where C: PrimeCurve + CurveArithmetic + DigestPrimitive, <C as CurveArithmetic>::Scalar: Invert<Output = CtOption<<C as CurveArithmetic>::Scalar>> + SignPrimitive<C>, <<C as Curve>::FieldBytesSize as Add>::Output: ArrayLength<u8>,

fn sign_prehash_with_rng( &self, rng: &mut impl CryptoRngCore, prehash: &[u8], ) -> Result<Signature<C>, Error>

Implementors