---
name: "EVP_PKEY_CTX_set1_pbe_pass"
section: "3ssl"
platform: "linux"
package: "openssl"
version: "3.6.5-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/EVP_PKEY_CTX_set1_pbe_pass"
---

# EVP\_PKEY\_CTX\_set1\_pbe\_pass(3ssl)

generic KDF support functions

## NAME

EVP\_PKEY\_CTX\_set1\_pbe\_pass - generic KDF support functions

## SYNOPSIS

```
 #include <openssl/kdf.h>
 int EVP_PKEY_CTX_set1_pbe_pass(EVP_PKEY_CTX *pctx, unsigned char *pass,
                                int passlen);
```

## DESCRIPTION

These functions are generic support functions for all KDF algorithms.

**EVP\_PKEY\_CTX\_set1\_pbe\_pass()** sets the password to the **passlen** first bytes from **pass**.

## STRING CTRLS

There is also support for string based control operations via **EVP\_PKEY\_CTX\_ctrl\_str**(3). The **password** can be directly specified using the **type** parameter "pass" or given in hex encoding using the "hexpass" parameter.

## RETURN VALUES

All these functions return 1 for success and 0 or a negative value for failure. In particular a return value of -2 indicates the operation is not supported by the public key algorithm.

## SEE ALSO

**EVP\_PKEY\_CTX\_new**(3), **EVP\_PKEY\_CTX\_ctrl\_str**(3), **EVP\_PKEY\_derive**(3)

## HISTORY

**EVP\_PKEY\_CTX\_set1\_pbe\_pass()** was converted from a macro to a function in OpenSSL 3.0.

## COPYRIGHT

Copyright 2018-2020 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\>.