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📜 NAME

EVP_MD-SHA2 - The SHA2 EVP_MD implementation

🚀 Quick Reference

Use Case	Command	Description
🔒 Generate SHA-256 hash of a file	openssl dgst -sha256 <file>	Computes the SHA-256 digest of the given file.
🔒 Generate SHA-512 hash of a file	openssl dgst -sha512 <file>	Computes the SHA-512 digest of the given file.
🔒 Generate SHA-224 hash of a file	openssl dgst -sha224 <file>	Computes the SHA-224 digest of the given file.
🔒 Generate SHA-384 hash of a file	openssl dgst -sha384 <file>	Computes the SHA-384 digest of the given file.
🔍 List available digest commands	openssl list -digest-commands	Lists all available digest algorithms, including SHA2 variants.
🔍 Display help for the digest command	openssl dgst -help	Shows usage information and available options for the dgst command.

📝 DESCRIPTION

Support for computing SHA2 digests through the EVP_MD API.

🔑 Identities

This implementation includes the following varieties:

FIPS & Default Provider:

• SHA2-224 — Known names are "SHA2-224", "SHA-224" and "SHA224".
• SHA2-256 — Known names are "SHA2-256", "SHA-256" and "SHA256".
• SHA2-384 — Known names are "SHA2-384", "SHA-384" and "SHA384".
• SHA2-512 — Known names are "SHA2-512", "SHA-512" and "SHA512".

Default Provider only:

• SHA2-512/224 — Known names are "SHA2-512/224", "SHA-512/224" and "SHA512-224".
• SHA2-512/256 — Known names are "SHA2-512/256", "SHA-512/256" and "SHA512-256".

⚙️ Gettable Parameters

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

📚 SEE ALSO

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

©️ COPYRIGHT

Copyright 2020 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.

3.0.2 2026-06-02 EVP_MD-SHA2(7SSL)

📜 NAME 🚀 Quick Reference 📝 DESCRIPTION 📚 SEE ALSO ©️ COPYRIGHT