Updated: 2025/Nov/16

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EVP_KDF-PVKKDF(7)                   OpenSSL                  EVP_KDF-PVKKDF(7)


NAME
       EVP_KDF-PVKKDF - The PVK EVP_KDF implementation

DESCRIPTION
       Support for computing the PVK KDF PIN-based KDF through the EVP_KDF
       API.

       The EVP_KDF-PVKKDF algorithm implements a PVK PIN-based key derivation
       function; it derives a key from a password using a salt.

   Identity
       "PVKKDF" is the name for this implementation; it can be used with the
       EVP_KDF_fetch() function.

   Supported parameters
       The supported parameters are:

       "pass" (OSSL_KDF_PARAM_PASSWORD) <octet string>
       "salt" (OSSL_KDF_PARAM_SALT) <octet string>
       "properties" (OSSL_KDF_PARAM_PROPERTIES) <UTF8 string>
       "digest" (OSSL_KDF_PARAM_DIGEST) <UTF8 string>
           These parameters work as described in "PARAMETERS" in EVP_KDF(3).

NOTES
       A typical application of this algorithm is to derive keying material
       for an encryption algorithm from a password in the "pass" and a salt in
       "salt".

       No assumption is made regarding the given password; it is simply
       treated as a byte sequence.

       The legacy provider needs to be available in order to access this
       algorithm.

SEE ALSO
       EVP_KDF(3), EVP_KDF_CTX_new(3), EVP_KDF_CTX_free(3),
       EVP_KDF_CTX_set_params(3), EVP_KDF_derive(3), "PARAMETERS" in
       EVP_KDF(3), OSSL_PROVIDER-legacy(7)

HISTORY
       This functionality was added in OpenSSL 3.2.

COPYRIGHT
       Copyright 2021 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>.

3.5.1                             2025-07-01                 EVP_KDF-PVKKDF(7)