Highly experimental backdoor-resistant salted-HMAC-based Key Derivation function.
An HKDF implementation that is resistant to backdoors in the hashing primitives compression function. You can read more about this implementation here.
Based on the work of Marc Fischlin, Christian Janson and Sogol Mazaheri in "Backdoored Hash Functions: Immunizing HMAC and HKDF" and Shai Halevi and Hugo Krawczyk in "Strengthening Digital Signatures via Randomized Hashing".
sHKDF is licensed under the MIT license. See the LICENSE
file for more information.