Crate digest

This crate provides traits which describe functionality of cryptographic hash functions and Message Authentication algorithms.

Traits in this repository are organized into the following levels:

• High-level convenience traits: Digest, DynDigest, [Mac]. Wrappers around lower-level traits for most common use-cases. Users should usually prefer using these traits.
• Mid-level traits: Update, FixedOutput, FixedOutputReset, ExtendableOutput, ExtendableOutputReset, XofReader, VariableOutput, Reset, [KeyInit], and [InnerInit]. These traits atomically describe available functionality of an algorithm.
• Marker traits: HashMarker, [MacMarker]. Used to distinguish different algorithm classes.
• Low-level traits defined in the core_api module. These traits operate at a block-level and do not contain any built-in buffering. They are intended to be implemented by low-level algorithm providers only. Usually they should not be used in application-level code.

Additionally hash functions implement traits from the standard library: Default, Clone, Write. The latter is feature-gated behind std feature, which is usually enabled by default by hash implementation crates.

Re-exports

pub use block_buffer;core-api

pub use crypto_common;

pub use crypto_common::generic_array;

pub use crypto_common::typenum;

Modules

consts

Type aliases for many constants.

core_apicore-api

Low-level traits operating on blocks and wrappers around them.

Macros

impl_oid_carriercore-api

Implement dummy type with hidden docs which is used to “carry” hasher OID for CtVariableCoreWrapper.

Structs

InvalidBufferSize

Buffer length is not equal to hash output size.

InvalidOutputSize

The error type used in variable hash traits.

Traits

Digest

Convenience wrapper trait covering functionality of cryptographic hash functions with fixed output size.

DynDigest

Modification of the Digest trait suitable for trait objects.

ExtendableOutput

Trait for hash functions with extendable-output (XOF).

ExtendableOutputReset

Trait for hash functions with extendable-output (XOF) able to reset themselves.

FixedOutput

Trait for hash functions with fixed-size output.

FixedOutputReset

Trait for hash functions with fixed-size output able to reset themselves.

HashMarker

Marker trait for cryptographic hash functions.

OutputSizeUser

Types which return data with the given size.

Reset

Resettable types.

Update

Types which consume data with byte granularity.

VariableOutput

Trait for hash functions with variable-size output.

VariableOutputReset

Trait for hash functions with variable-size output able to reset themselves.

XofReader

Trait for reader types which are used to extract extendable output from a XOF (extendable-output function) result.

Type Aliases

Output

Output array of OutputSizeUser implementors.