Crate universal_hash

Traits for Universal Hash Functions.

About universal hashes

Universal hash functions provide a “universal family” of possible hash functions where a given member of a family is selected by a key.

They are well suited to the purpose of “one time authenticators” for a sequence of bytestring inputs, as their construction has a number of desirable properties such as pairwise independence as well as amenability to efficient implementations, particularly when implemented using SIMD instructions.

When combined with a cipher, such as in Galois/Counter Mode (GCM) or the Salsa20 family AEAD constructions, they can provide the core functionality for a Message Authentication Code (MAC).

Re-exports

• pub use crypto_common;
• pub use crypto_common::generic_array;
• pub use crypto_common::typenum;

Modules

• consts
  Type aliases for many constants.

Structs

• Error
  Error type used by the UniversalHash::verify method to indicate that UHF output is not equal the expected value.

Traits

• KeyInit
  Types which can be initialized from key.
• Reset
  Resettable types.
• UhfBackend
  Trait implemented by UHF backends.
• UhfClosure
  Trait for UhfBackend users.
• UniversalHash
  The UniversalHash trait defines a generic interface for universal hash functions.

Functions

• to_blocks 🔒
  Split message into slice of blocks and leftover tail.

Type Aliases

• Block
  Block on which BlockSizeUser implementors operate.
• Key
  Key used by KeySizeUser implementors.
• ParBlocks
  Parallel blocks on which ParBlocksSizeUser implementors operate.