struct

HalfSipHash(CROUNDS, DROUNDS)

Inherits Struct / Value / Object

An alternative SipHash pseudorandom function that uses a 64-bit key and generates 32-bit or 64-bit hashes, meant for 32-bit platforms. On 64-bit platform we advise to use SipHash instead.

While SipHash(2, 4) has been analyzed and verified to be cryptographically secure, HalfSipHash has not, and isn't expected to be. Results from the hasher should never be disclosed (e.g. use for table hashing on 32-bit).

See https://131002.net/siphash/ for more information.

Example:

key = uninitialized HalfSipHash::Key
SecureRandom.random_bytes(key.to_slice)

hash = HalfSipHash(2, 4).siphash("input data", key)

Constructors

new

Source

Class methods

siphash(input : Bytes, output : Bytes, key : Key)

Source

siphash(input : Int | Float, key : Key) : UInt32

Source

siphash(input : String, key : Key) : UInt32

Source

siphash(input : Bytes, key : Key) : UInt32

Source

Instance methods

initialize

Source

Nested types

HalfSipHash::Key