EVP_KDF-PKCS12KDF
Section: OpenSSL (7SSL)
Updated: 2024-03-03
Index
Return to Main Contents
NAME
EVP_KDF-PKCS12KDF - The PKCS#12 EVP_KDF implementation
DESCRIPTION
Support for computing the PKCS#12 password-based KDF through the EVP_KDF
API.
The EVP_KDF-PKCS12KDF algorithm implements the PKCS#12 password-based key
derivation function, as described in appendix B of RFC 7292 (PKCS #12:
Personal Information Exchange Syntax); it derives a key from a password
using a salt, iteration count and the intended usage.
Identity
``PKCS12KDF'' 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>
-
- "iter" (OSSL_KDF_PARAM_ITER) <unsigned integer>
-
- "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).
- "id" (OSSL_KDF_PARAM_PKCS12_ID) <integer>
-
This parameter is used to specify the intended usage of the output bits, as per
RFC 7292 section B.3.
NOTES
This algorithm is not available in the FIPS provider as it is not FIPS
approvable.
A typical application of this algorithm is to derive keying material for an
encryption algorithm from a password in the ``pass'', a salt in ``salt'',
and an iteration count.
Increasing the ``iter'' parameter slows down the algorithm which makes it
harder for an attacker to perform a brute force attack using a large number
of candidate passwords.
No assumption is made regarding the given password; it is simply treated as a
byte sequence.
CONFORMING TO
RFC7292
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-FIPS(7)
HISTORY
This functionality was added in OpenSSL 3.0.
COPYRIGHT
Copyright 2020-2023 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>.
Index
- NAME
-
- DESCRIPTION
-
- Identity
-
- Supported parameters
-
- NOTES
-
- CONFORMING TO
-
- SEE ALSO
-
- HISTORY
-
- COPYRIGHT
-
This document was created by
man2html,
using the manual pages.
Time: 00:15:02 GMT, May 08, 2024