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Make some handshake TLS 1.3 utility routines available for TLS 1.2

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Signed-off-by: Ronald Cron <ronald.cron@arm.com>
This commit is contained in:
Ronald Cron
2022-03-10 18:56:50 +01:00
parent 7ffe7ebe38
commit 8f6d39a81d
6 changed files with 124 additions and 142 deletions
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34
library/ssl_msg.c
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@ -2445,6 +2445,24 @@ void mbedtls_ssl_send_flight_completed( mbedtls_ssl_context *ssl )
/*
* Handshake layer functions
*/
int mbedtls_ssl_start_handshake_msg( mbedtls_ssl_context *ssl, unsigned hs_type,
unsigned char **buf, size_t *buf_len )
{
/*
* Reserve 4 bytes for hanshake header. ( Section 4,RFC 8446 )
* ...
* HandshakeType msg_type;
* uint24 length;
* ...
*/
*buf = ssl->out_msg + 4;
*buf_len = MBEDTLS_SSL_OUT_CONTENT_LEN - 4;
ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE;
ssl->out_msg[0] = hs_type;
return( 0 );
}
/*
* Write (DTLS: or queue) current handshake (including CCS) message.
@ -2609,6 +2627,22 @@ int mbedtls_ssl_write_handshake_msg_ext( mbedtls_ssl_context *ssl,
return( 0 );
}
int mbedtls_ssl_finish_handshake_msg( mbedtls_ssl_context *ssl,
size_t buf_len, size_t msg_len )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
size_t msg_with_header_len;
((void) buf_len);
/* Add reserved 4 bytes for handshake header */
msg_with_header_len = msg_len + 4;
ssl->out_msglen = msg_with_header_len;
MBEDTLS_SSL_PROC_CHK( mbedtls_ssl_write_handshake_msg_ext( ssl, 0, 0 ) );
cleanup:
return( ret );
}
/*
* Record layer functions
*/