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Add client dtls connection ID (2.). #149

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Add client dtls connection ID (2.). #149

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20d24fe
Add client dtls connection ID.
boaks Nov 18, 2021
db5b584
dtls-client.c: add support_cid option.
boaks Jan 24, 2023
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27 changes: 26 additions & 1 deletion crypto.h
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Original file line number Diff line number Diff line change
Expand Up @@ -113,6 +113,17 @@ typedef struct {
uint64_t bitfield;
} seqnum_t;

/* Maximum CID length. */
#ifndef DTLS_MAX_CID_LENGTH
#define DTLS_MAX_CID_LENGTH 16
#endif

#if (DTLS_MAX_CID_LENGTH > 0)
#ifndef DTLS_USE_CID_DEFAULT
#define DTLS_USE_CID_DEFAULT 1
#endif /* DTLS_USE_CID_DEFAULT */
#endif /* DTLS_MAX_CID_LENGTH > 0 */

typedef struct {
dtls_compression_t compression; /**< compression method */

Expand All @@ -127,7 +138,12 @@ typedef struct {
* access the components of the key block.
*/
uint8 key_block[MAX_KEYBLOCK_LENGTH];


#if (DTLS_MAX_CID_LENGTH > 0)
uint8_t write_cid[DTLS_MAX_CID_LENGTH];
uint8_t write_cid_length;
#endif /* DTLS_MAX_CID_LENGTH > 0 */

seqnum_t cseq; /**<sequence number of last record received*/
} dtls_security_parameters_t;

Expand All @@ -148,6 +164,9 @@ typedef struct dtls_user_parameters_t {
dtls_cipher_t cipher_suites[DTLS_MAX_CIPHER_SUITES + 1];
unsigned int force_extended_master_secret:1; /** force extended master secret extension (RFC7627) */
unsigned int force_renegotiation_info:1; /** force renegotiation info extension (RFC5746) */
#if (DTLS_MAX_CID_LENGTH > 0)
unsigned int support_cid:1; /** indicate CID support (RFC9146) */
#endif
} dtls_user_parameters_t;

typedef struct {
Expand All @@ -165,6 +184,12 @@ typedef struct {
dtls_compression_t compression; /**< compression method */
dtls_user_parameters_t user_parameters; /**< user parameters */
dtls_cipher_index_t cipher_index; /**< internal index for cipher_suite_params, DTLS_CIPHER_INDEX_NULL for TLS_NULL_WITH_NULL_NULL */

#if (DTLS_MAX_CID_LENGTH > 0)
uint8_t write_cid[DTLS_MAX_CID_LENGTH];
uint8_t write_cid_length;
#endif /* DTLS_MAX_CID_LENGTH > 0 */

unsigned int do_client_auth:1;
unsigned int extended_master_secret:1;
unsigned int renegotiation_info:1;
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