tlshandshake.h

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/* 2020-2026 Quantum Resistant Cryptographic Solutions Corporation
 * All Rights Reserved.
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 * CRYPTOGRAPHIC ALGORITHMS AND IMPLEMENTATIONS:
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 *   algorithms that are standardized or in the public domain, such as AES
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 *   algorithms designed by QRCS, including but not limited to RCS, SCB, CSX, QMAC, and
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 * Public Research and Evaluation License (QRCS-PREL), 2025-2026. The complete license terms
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 * Written by: John G. Underhill
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 */
 
#ifndef QSC_TLS_HANDSHAKE_H
#define QSC_TLS_HANDSHAKE_H
 
#include "qsccommon.h"
#include "tlscert.h"
#include "tlserrors.h"
#include "tlstypes.h"
 
QSC_CPLUSPLUS_ENABLED_START


QSC_EXPORT_API qsc_tls_status qsc_tls_handshake_write_header(uint8_t* output, size_t outlen, size_t* offset, qsc_tls_handshake_type type, size_t bodylen);

QSC_EXPORT_API qsc_tls_status qsc_tls_handshake_read_header(const uint8_t* input, size_t inlen, size_t* offset, qsc_tls_handshake_type* type, size_t* bodylen);

QSC_EXPORT_API qsc_tls_status qsc_tls_handshake_send_change_cipher_spec_compat(uint8_t* output, size_t outlen, size_t* written);

QSC_EXPORT_API qsc_tls_status qsc_tls_handshake_encode_finished(uint8_t* output, size_t outlen, size_t* offset, const uint8_t* verifydata, size_t verifydatalen);

QSC_EXPORT_API qsc_tls_status qsc_tls_handshake_decode_finished(const uint8_t* input, size_t inlen, const uint8_t** verifydata, size_t* verifydatalen);

QSC_EXPORT_API qsc_tls_status qsc_tls_handshake_encode_certificate_verify(uint8_t* output, size_t outlen,
    size_t* offset, qsc_tls_signature_scheme scheme, const uint8_t* signature, size_t signaturelen);

QSC_EXPORT_API qsc_tls_status qsc_tls_handshake_decode_certificate_verify(const uint8_t* input, size_t inlen, qsc_tls_signature_scheme* scheme, const uint8_t** signature, size_t* signaturelen);

QSC_EXPORT_API qsc_tls_status qsc_tls_handshake_encode_encrypted_extensions(uint8_t* output, size_t outlen, size_t* offset, const uint8_t* extensions, size_t extensionslen);

QSC_EXPORT_API qsc_tls_status qsc_tls_handshake_encode_key_update(uint8_t* output, size_t outlen, size_t* offset, bool requestupdate);

QSC_EXPORT_API qsc_tls_status qsc_tls_handshake_decode_key_update(const uint8_t* input, size_t inlen, bool* requestupdate);
 
QSC_CPLUSPLUS_ENABLED_END
 
#endif