EVP_KDF-PBKDF1 - The PBKDF1 EVP_KDF implementation
Support for computing the
PBKDF1 password-based KDF through the
EVP_KDF API.
The EVP_KDF-PBKDF1 algorithm implements the PBKDF1 password-based key derivation
function, as described in RFC 8018; it derives a key from a password using a
salt and iteration count.
"PBKDF1" 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>
- This parameter has a default value of 0 and should be
set.
- "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).
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.
RFC 8018
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)
This functionality was added in OpenSSL 3.0.
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>.