Trait coins_bip32::ecdsa::signature::RandomizedDigestSigner

pub trait RandomizedDigestSigner<D, S> where
    D: Digest,
    S: Signature, {
    fn try_sign_digest_with_rng(
        &self,
        rng: impl CryptoRng + RngCore,
        digest: D
    ) -> Result<S, Error>;

    fn sign_digest_with_rng(&self, rng: impl CryptoRng + RngCore, digest: D) -> S { ... }
}

Combination of DigestSigner and RandomizedSigner with support for computing a signature over a digest which requires entropy from an RNG.

Required Methods

fn try_sign_digest_with_rng(
    &self,
    rng: impl CryptoRng + RngCore,
    digest: D
) -> Result<S, Error>

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

Provided Methods

fn sign_digest_with_rng(&self, rng: impl CryptoRng + RngCore, digest: D) -> S

Sign the given prehashed message Digest, returning a signature.

Panics in the event of a signing error.

Implementations on Foreign Types

impl<D> RandomizedDigestSigner<D, Signature> for SigningKey where
    D: Digest<OutputSize = UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>> + FixedOutput, 

fn try_sign_digest_with_rng(
    &self,
    rng: impl CryptoRng + RngCore,
    digest: D
) -> Result<Signature, Error>

impl<C, D> RandomizedDigestSigner<D, Signature<C>> for SigningKey<C> where
    C: PrimeCurve + ProjectiveArithmetic,
    D: Digest<OutputSize = <<C as Curve>::UInt as ArrayEncoding>::ByteSize> + BlockSizeUser + FixedOutput + FixedOutputReset,
    <C as Curve>::UInt: for<'a> From<&'a <C as ScalarArithmetic>::Scalar>,
    <C as ScalarArithmetic>::Scalar: Invert,
    <C as ScalarArithmetic>::Scalar: Reduce<<C as Curve>::UInt>,
    <C as ScalarArithmetic>::Scalar: SignPrimitive<C>,
    <<<C as Curve>::UInt as ArrayEncoding>::ByteSize as Add<<<C as Curve>::UInt as ArrayEncoding>::ByteSize>>::Output: ArrayLength<u8>,
    <<C as ScalarArithmetic>::Scalar as Invert>::Output == CtOption<<C as ScalarArithmetic>::Scalar>, 

fn try_sign_digest_with_rng(
    &self,
    rng: impl CryptoRng + RngCore,
    msg_digest: D
) -> Result<Signature<C>, Error>

Sign message prehash using an ephemeral scalar (k) derived according to a variant of RFC 6979 (Section 3.6) which supplies additional entropy from an RNG.

Implementors

impl<D> RandomizedDigestSigner<D, Signature> for coins_bip32::ecdsa::SigningKey where
    D: Digest<OutputSize = UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>> + FixedOutput, 

impl<D> RandomizedDigestSigner<D, Signature<Secp256k1>> for coins_bip32::ecdsa::SigningKey where
    D: Digest<OutputSize = UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>> + FixedOutput,