.. index:: single: blake2b(Key,DigestSize) .. _blake2b/2:

.. rst-class:: right

object

blake2b(Key,DigestSize)

• Key - A list of 0 to 64 key bytes. Use the empty list for unkeyed hashing.
• DigestSize - Number of digest bytes to generate, from 1 to 64. BLAKE2b hash function.

  | Availability: | logtalk_load(hashes(loader))

  | Author: Paulo Moura | Version: 1:1:0 | Date: 2026-08-10

  | Compilation flags: | static, context_switching_calls

  | Imports: | public :ref:`blake2_core(Key,DigestSize) <blake2_core/2>` | Uses: | :ref:`byte_order <byte_order/0>` | :ref:`hash_common_64 <hash_common_64/0>` | :ref:`list <list/0>`

  | Remarks: | (none)

  | Inherited public predicates: | Â :ref:`hash_digest_protocol/0::block_size/1` Â :ref:`hash_digest_protocol/0::digest/2` Â :ref:`hash_digest_protocol/0::digest_size/1` Â :ref:`hash_state_protocol/0::final_hash_state/2` Â :ref:`hash_protocol/0::hash/2` Â :ref:`hash_state_protocol/0::new_hash_state/1` Â :ref:`hash_state_protocol/0::update_hash_state/3` Â

  .. contents:: :local: :backlinks: top

Public predicates

(no local declarations; see entity ancestors if any)

Protected predicates

(no local declarations; see entity ancestors if any)

Private predicates

(no local declarations; see entity ancestors if any)

Operators

(none)

.. seealso::

:ref:`blake2b <blake2b/0>`, :ref:`blake2s(Key,DigestSize) <blake2s/2>`, :ref:`sha512 <sha512/0>`, :ref:`sha512_256 <sha512_256/0>`