EVP_KDF-PVKKDF(7ossl)

💅 NAME 💅

This is the OpenSSL manual page for EVP_KDF-PVKKDF, manual section 7ossl, folded in right here at the top bestie. The name is literally:

EVP_KDF-PVKKDF — The PVK EVP_KDF implementation.

🌸 DESCRIPTION 🌸

Support for computing the PVK KDF PIN-based KDF through the EVP_KDF API. Yes, it’s giving crypto API realness. 💅

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. That’s the fetchable name, no cap.

💖 Supported parameters 💖

The supported parameters are:

• "pass" (OSSL_KDF_PARAM_PASSWORD) — type is <octet string>.
• "salt" (OSSL_KDF_PARAM_SALT) — type is <octet string>.
• "properties" (OSSL_KDF_PARAM_PROPERTIES) — type is <UTF8 string>.
• "digest" (OSSL_KDF_PARAM_DIGEST) — type is <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. Literally just bytes, bestie. 🫶

The legacy provider needs to be available in order to access this algorithm. Like, don’t forget to bring the legacy provider to the function.

🦋 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. Iconic behavior, honestly. ✨

👑 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>.

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Okay that’s the whole page, bestie 💖 This is version 3.5.0, dated 2026-09-25, from the EVP_KDF-PVKKDF(7ossl) manual. Slay and stay hydrated. 🎀