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84 lines
2.5 KiB
C
84 lines
2.5 KiB
C
#ifndef MBEDTLS_SSL_TICKET_H
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#define MBEDTLS_SSL_TICKET_H
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#include "third_party/mbedtls/cipher.h"
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#include "third_party/mbedtls/config.h"
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#include "third_party/mbedtls/ssl.h"
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/* clang-format off */
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/*
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* This implementation of the session ticket callbacks includes key
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* management, rotating the keys periodically in order to preserve forward
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* secrecy, when MBEDTLS_HAVE_TIME is defined.
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* \brief Information for session ticket protection
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*/
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typedef struct mbedtls_ssl_ticket_key
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{
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unsigned char name[4]; /*!< random key identifier */
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uint32_t generation_time; /*!< key generation timestamp (seconds) */
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mbedtls_cipher_context_t ctx; /*!< context for auth enc/decryption */
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}
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mbedtls_ssl_ticket_key;
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/**
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* \brief Context for session ticket handling functions
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*/
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typedef struct mbedtls_ssl_ticket_context
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{
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mbedtls_ssl_ticket_key keys[2]; /*!< ticket protection keys */
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unsigned char active; /*!< index of the currently active key */
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uint32_t ticket_lifetime; /*!< lifetime of tickets in seconds */
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/** Callback for getting (pseudo-)random numbers */
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int (*f_rng)(void *, unsigned char *, size_t);
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void *p_rng; /*!< context for the RNG function */
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}
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mbedtls_ssl_ticket_context;
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/**
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* \brief Initialize a ticket context.
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* (Just make it ready for mbedtls_ssl_ticket_setup()
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* or mbedtls_ssl_ticket_free().)
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*
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* \param ctx Context to be initialized
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*/
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void mbedtls_ssl_ticket_init( mbedtls_ssl_ticket_context *ctx );
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int mbedtls_ssl_ticket_setup( mbedtls_ssl_ticket_context *ctx,
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int (*f_rng)(void *, unsigned char *, size_t), void *p_rng,
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mbedtls_cipher_type_t cipher,
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uint32_t lifetime );
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/**
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* \brief Implementation of the ticket write callback
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*
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* \note See \c mbedtls_ssl_ticket_write_t for description
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*/
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extern mbedtls_ssl_ticket_write_t mbedtls_ssl_ticket_write;
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/**
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* \brief Implementation of the ticket parse callback
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*
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* \note See \c mbedtls_ssl_ticket_parse_t for description
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*/
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extern mbedtls_ssl_ticket_parse_t mbedtls_ssl_ticket_parse;
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/**
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* \brief Free a context's content and zeroize it.
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*
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* \param ctx Context to be cleaned up
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*/
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void mbedtls_ssl_ticket_free( mbedtls_ssl_ticket_context *ctx );
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#ifdef __cplusplus
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}
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#endif
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#endif /* ssl_ticket.h */
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