EVP_KDF-PKCS12KDF - The PKCS#12 EVP_KDF implementation
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.
"PKCS12KDF" is the name for this implementation; it can be used with
the
EVP_KDF_fetch() function.
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.
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.
RFC7292
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)
This functionality was added in OpenSSL 3.0.
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>.