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Add early data indication to client side

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Add fields to mbedtls_ssl_context
Add write early data indication function
Add check whether write early data indication
Add early data option to ssl_client2
Add test cases for early data

Signed-off-by: Xiaokang Qian <xiaokang.qian@arm.com>
This commit is contained in:
Xiaokang Qian 2022-10-24 11:12:51 +00:00
parent aeb8bf2ab0
commit 0e97d4d16d
9 changed files with 172 additions and 11 deletions
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35
library/ssl_tls13_generic.c
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@ -1374,6 +1374,41 @@ cleanup:
#endif /* MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE */
/* Early Data Extension
*
* struct {} Empty;
*
* struct {
* select ( Handshake.msg_type ) {
* case new_session_ticket: uint32 max_early_data_size;
* case client_hello: Empty;
* case encrypted_extensions: Empty;
* };
* } EarlyDataIndication;
*/
#if defined(MBEDTLS_SSL_EARLY_DATA)
int mbedtls_ssl_tls13_write_early_data_ext( mbedtls_ssl_context *ssl,
unsigned char *buf,
const unsigned char *end,
size_t *out_len )
{
unsigned char *p = buf;
*out_len = 0;
((void) ssl);
MBEDTLS_SSL_CHK_BUF_PTR( p, end, 4 );
MBEDTLS_SSL_DEBUG_MSG(
3, ( "client hello, adding early_data extension" ) );
MBEDTLS_PUT_UINT16_BE( MBEDTLS_TLS_EXT_EARLY_DATA, p, 0 );
/* Write length of the early data indication extension */
MBEDTLS_PUT_UINT16_BE( 0, p, 2 );
*out_len = 4;
return( 0 );
}
#endif /* MBEDTLS_SSL_EARLY_DATA */
/* Reset SSL context and update hash for handling HRR.
*
* Replace Transcript-Hash(X) by