Cryptographic Hash Functions and Data Encoding R package secretbase version 1.3.0 Fast and memory-efficient streaming hash functions, binary/text encoding and serialization. Hashes strings and raw vectors directly. Stream hashes files which can be larger than memory, as well as in-memory objects through R's serialization mechanism. Implements the SHA-256, SHA-3 and 'Keccak' cryptographic hash functions, SHAKE256 extendable-output function (XOF), 'SipHash' pseudo-random function, base64 (including the URL-safe variant) and base58 encoding, 'CBOR' and 'JSON' serialization. Software Depends: R (>= 3.5) Charlie Gao <charlie.gao@posit.co> Comprehensive R Archive Network (CRAN) Charlie Gao [aut, cre] (ORCID: <https://orcid.org/0000-0002-0750-061X>), Posit Software, PBC [cph, fnd] (ROR: <https://ror.org/03wc8by49>), Hibiki AI Limited [cph], The Mbed TLS Contributors [cph] (SHA-3, SHA-256 and base64 code from Mbed TLS), Red Hat, Inc. [cph] (SipHash code from c-siphash), Luke Dashjr [cph] (Base58 code from libbase58) MIT + file LICENSE (https://CRAN.R-project.org/package=secretbase/LICENSE) 2026-06-12 application/tgz https://CRAN.R-project.org/package=secretbase doi:10.32614/CRAN.package.secretbase