Trait DigestState 

pub trait DigestState {
    // Required methods
    fn update(&mut self, data: &[u8]) -> Result<(), ProviderError>;
    fn finalize(self: Box<Self>) -> Result<Vec<u8>, ProviderError>;
}

Incremental message digest owned by one provider operation.

Input is absorbed in order across any number of update calls; finalize consumes the state. A provider may serialize its other operations while a state is live, so callers finish a digest before starting another operation on the same provider.

This is the backend interface of the selected provider (runtime backend, FIPS selection, token sessions), not a cross-product contract: the shared streaming digest callbacks of the signature-primitives packages are implemented by adapters on top of it.

Required Methods

fn update(&mut self, data: &[u8]) -> Result<(), ProviderError>

Absorb the next input bytes.

fn finalize(self: Box<Self>) -> Result<Vec<u8>, ProviderError>

Return the digest of all absorbed bytes.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors