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🏷️ NAME

EVP_MD-BLAKE2 - The BLAKE2 EVP_MD implementation

🚀 Quick Reference

Use Case	Command	Description
Compute BLAKE2S-256 digest	openssl dgst -blake2s256 file	Output BLAKE2S-256 hash of file
Compute BLAKE2B-512 digest	openssl dgst -blake2b512 file	Output BLAKE2B-512 hash of file
List all digest commands	openssl list -digest-commands	Shows available digest algorithms, including blake2s256 and blake2b512

📖 DESCRIPTION

Support for computing BLAKE2 digests through the EVP_MD API.

🔑 Identities

This implementation is only available with the default provider, and includes the following varieties:

• BLAKE2S-256 — Known names are "BLAKE2S-256" and "BLAKE2s256".
• BLAKE2B-512 — Known names are "BLAKE2B-512" and "BLAKE2b512".

⚙️ Gettable Parameters

This implementation supports the common gettable parameters described in EVP_MD-common(7).

🔗 SEE ALSO

provider-digest(7), OSSL_PROVIDER-default(7)

©️ COPYRIGHT

Copyright 2020-2022 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the Apache License 2.0 (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>.

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3.0.2 — 2026-06-02

🏷️ NAME 🚀 Quick Reference 📖 DESCRIPTION 🔗 SEE ALSO ©️ COPYRIGHT