Trait coins_bip32::ecdsa::signature::RandomizedSigner

pub trait RandomizedSigner<S> where
    S: Signature, {
    fn try_sign_with_rng(
        &self,
        rng: impl CryptoRng + RngCore,
        msg: &[u8]
    ) -> Result<S, Error>;

    fn sign_with_rng(&self, rng: impl CryptoRng + RngCore, msg: &[u8]) -> S { ... }
}

Sign the given message using the provided external randomness source.

Required Methods

fn try_sign_with_rng(
    &self,
    rng: impl CryptoRng + RngCore,
    msg: &[u8]
) -> Result<S, Error>

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

The main intended use case for signing errors is when communicating with external signers, e.g. cloud KMS, HSMs, or other hardware tokens.

Provided Methods

fn sign_with_rng(&self, rng: impl CryptoRng + RngCore, msg: &[u8]) -> S

Sign the given message and return a digital signature

Implementations on Foreign Types

impl RandomizedSigner<Signature> for SigningKey

fn try_sign_with_rng(
    &self,
    rng: impl CryptoRng + RngCore,
    msg: &[u8]
) -> Result<Signature, Error>

impl<C> RandomizedSigner<Signature<C>> for SigningKey<C> where
    C: PrimeCurve + ProjectiveArithmetic + DigestPrimitive,
    SigningKey<C>: RandomizedDigestSigner<<C as DigestPrimitive>::Digest, Signature<C>>,
    <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_with_rng(
    &self,
    rng: impl CryptoRng + RngCore,
    msg: &[u8]
) -> Result<Signature<C>, Error>

Implementors

impl<S> RandomizedSigner<S> for coins_bip32::ecdsa::SigningKey where
    S: PrehashSignature,
    SigningKey: RandomizedDigestSigner<<S as PrehashSignature>::Digest, S>,