kdf.h

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/* 2025-2026 Quantum Resistant Cryptographic Solutions Corporation
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 * CRYPTOGRAPHIC ALGORITHMS AND IMPLEMENTATIONS:
 * - This software includes implementations of cryptographic primitives and
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 *   algorithms designed by QRCS, including but not limited to RCS, SCB, CSX, QMAC, and
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 * Written by: John G. Underhill
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 */
 
#ifndef UDIF_KDF_H
#define UDIF_KDF_H
 
#include "udif.h"


UDIF_EXPORT_API void udif_kdf_hash(uint8_t* output, size_t outlen, const uint8_t* input, size_t inplen, const uint8_t* name, size_t namelen);

UDIF_EXPORT_API void udif_kdf_hash_custom(uint8_t* output, size_t outlen, const uint8_t* input, size_t inplen, const uint8_t* name, size_t namelen, const uint8_t* custom, size_t custlen);

UDIF_EXPORT_API void udif_kdf_session_keys(uint8_t* txkey, uint8_t* txnonce, uint8_t* rxkey, uint8_t* rxnonce, uint8_t* state, 
    const uint8_t* ikm, size_t ikmlen, const uint8_t* transcript, size_t transcriptlen, bool initiator);

UDIF_EXPORT_API void udif_kdf_ratchet(uint8_t* txkey, uint8_t* txnonce, uint8_t* rxkey, uint8_t* rxnonce, uint8_t* newstate, const uint8_t* prevstate, 
    const uint8_t* kemsecret, size_t kemseclen, const uint8_t* sessionid, size_t sessidlen, uint64_t epoch, bool initiator);

UDIF_EXPORT_API void udif_kdf_object_digest(uint8_t* digest, const udif_object* obj);

UDIF_EXPORT_API void udif_kdf_anchor_digest(uint8_t* digest, const udif_anchor_record* anchor);

UDIF_EXPORT_API void udif_kdf_capability_digest(uint8_t* digest, const udif_capability* cap);

UDIF_EXPORT_API void udif_kdf_transfer_digest(uint8_t* digest, const uint8_t* objserial, const uint8_t* txid, const uint8_t* toowner, uint64_t timestamp);

UDIF_EXPORT_API void udif_kdf_session_id(uint8_t* sessionid, const uint8_t* localser, const uint8_t* remoteser, const uint8_t* ikm, size_t ikmlen);
 
#endif