---
name: "EVP_MD-NULL"
section: "7ssl"
platform: "linux"
package: "openssl"
version: "3.6.5-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/EVP_MD-NULL"
---

# EVP\_MD-NULL(7ssl)

The NULL EVP\_MD implementation

## NAME

EVP\_MD-NULL - The NULL EVP\_MD implementation

## DESCRIPTION

Support for a NULL digest through the **EVP\_MD** API. This algorithm does nothing and returns 1 for its init, update and final methods.

### Algorithm Name

The following algorithm is available in the default provider:

- "NULL"

  ### Gettable Parameters

This implementation supports the common gettable parameters described in **EVP\_MD-common**(7).

## SEE ALSO

**EVP\_MD\_CTX\_set\_params**(3), **provider-digest**(7), **OSSL\_PROVIDER-default**(7)

## COPYRIGHT

Copyright 2023 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\>.