Trait ecdsa::hazmat::SignPrimitive[−][src]

pub trait SignPrimitive<C> where
    C: Curve + ProjectiveArithmetic,
    SignatureSize<C>: ArrayLength<u8>, {
    fn try_sign_prehashed<K: Borrow<Scalar<C>> + Invert<Output = Scalar<C>>>(
        &self, 
        ephemeral_scalar: &K, 
        hashed_msg: &Scalar<C>
    ) -> Result<Signature<C>>;
}

This is supported on crate features hazmat and arithmetic only.

Expand description

Try to sign the given prehashed message using ECDSA.

This trait is intended to be implemented on a type with access to the secret scalar via &self, such as particular curve’s Scalar type, or potentially a key handle to a hardware device.

Required methods

[src]

fn try_sign_prehashed<K: Borrow<Scalar<C>> + Invert<Output = Scalar<C>>>(
    &self, 
    ephemeral_scalar: &K, 
    hashed_msg: &Scalar<C>
) -> Result<Signature<C>>

Try to sign the prehashed message.

Accepts the following arguments:

ephemeral_scalar: ECDSA k value. MUST BE UNIFORMLY RANDOM!!!
hashed_msg: scalar computed from a hashed message digest to be signed. MUST BE OUTPUT OF A CRYPTOGRAPHICALLY SECURE DIGEST ALGORITHM!!!

Implementors

[src]

impl<C, T> SignPrimitive<C> for T where
    C: Curve + ProjectiveArithmetic,
    T: RecoverableSignPrimitive<C>,
    SignatureSize<C>: ArrayLength<u8>,