Crate concat_kdf
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An implementation of Concat KDF, the Concatenation Key Derivation Function.
This function is described in the section 5.8.1 of NIST SP 800-56A, Recommendation for Pair-Wise Key Establishment Schemes Using Discrete Logarithm Cryptography.
Usage
The most common way to use Concat KDF is as follows: you generate a shared secret with other party (e.g. via Diffie-Hellman algorithm) and use key derivation function to derive a shared key.
let mut key = [0u8; 32];
concat_kdf::derive_key_into::<sha2::Sha256>(b"shared-secret", b"other-info", &mut key).unwrap();
Enums
Concat KDF errors.
Functions
derive_key
std
Derives and returns length
bytes key from secret
and other_info
.
Derives key
in-place from secret
and other_info
.