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, 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 block_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 and Clone.

This crate does not provide any implementations of the io::Read/Write traits, see the digest-io crate for std::io-compatibility wrappers.

Re-exports

pub use block_buffer;

pub use common;

pub use common::array;

pub use common::typenum;

Modules

block_api

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

consts

Macros

buffer_ct_variable

Creates a buffered wrapper around block-level “core” type which implements variable output size traits with output size selected at compile time.

buffer_fixed

Creates a buffered wrapper around block-level “core” type which implements fixed output size traits.

buffer_xof

Creates a buffered wrapper around block-level “core” type which implements extendable output size traits.

Structs

CtOutput

Fixed size output value which provides a safe Eq implementation that runs in constant time.

InvalidBufferSize

Buffer length is not equal to hash output size.

InvalidLength

The error type returned when key and/or IV used in the KeyInit, KeyIvInit, and InnerIvInit slice-based methods had an invalid length.

InvalidOutputSize

The error type used in variable hash traits.

MacError

Error type for when the Output of a Mac is not equal to the expected value.

XofFixedWrapper

Wrapper around ExtendableOutput types adding OutputSizeUser with the given size of S.

Traits

CollisionResistance

Types with a certain collision resistance.

CustomizedInit

Trait for hash functions with customization string for domain separation.

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.

InnerInit

Types which can be initialized from another type (usually block ciphers).

KeyInit

Types which can be initialized from a key.

Mac

Convenience wrapper trait covering functionality of Message Authentication algorithms.

MacMarker

Marker trait for Message Authentication algorithms.

OutputSizeUser

Types which return data with the given size.

Reset

Resettable types.

Update

Types which consume data with byte granularity.

XofReader

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

Type Aliases

Key

Key used by KeySizeUser implementors.

Output

Output array of OutputSizeUser implementors.