---
name: "PBMAC1_get1_pbkdf2_param"
section: "3ssl"
platform: "linux"
package: "openssl"
version: "3.6.5-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/PBMAC1_get1_pbkdf2_param"
---

# PBMAC1\_get1\_pbkdf2\_param(3ssl)

Function to manipulate a PBMAC1 MAC structure

## NAME

PBMAC1\_get1\_pbkdf2\_param - Function to manipulate a PBMAC1 MAC structure

## SYNOPSIS

```
 #include <openssl/x509.h>
 PBKDF2PARAM *PBMAC1_get1_pbkdf2_param(const X509_ALGOR *macalg);
```

## DESCRIPTION

**PBMAC1\_get1\_pbkdf2\_param()** retrieves a **PBKDF2PARAM** structure from an *X509\_ALGOR* structure.

## RETURN VALUES

**PBMAC1\_get1\_pbkdf2\_param()** returns NULL in case when PBMAC1 uses an algorithm apart from **PBKDF2** or when passed incorrect parameters and a pointer to **PBKDF2PARAM** structure otherwise.

## CONFORMING TO

IETF RFC 9579 (\<https://tools.ietf.org/html/rfc9579\>)

## SEE ALSO

**openssl-pkcs12**(1)

## HISTORY

The *PBMAC1\_get1\_pbkdf2\_param* function was added in OpenSSL 3.4.

## COPYRIGHT

Copyright 2021-2024 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\>.