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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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24
library/ssl_tls.c
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@ -475,6 +475,30 @@ void mbedtls_ssl_optimize_checksum( mbedtls_ssl_context *ssl,
}
}
static void mbedtls_ssl_add_hs_hdr_to_checksum( mbedtls_ssl_context *ssl,
unsigned hs_type,
size_t total_hs_len )
{
unsigned char hs_hdr[4];
/* Build HS header for checksum update. */
hs_hdr[0] = MBEDTLS_BYTE_0( hs_type );
hs_hdr[1] = MBEDTLS_BYTE_2( total_hs_len );
hs_hdr[2] = MBEDTLS_BYTE_1( total_hs_len );
hs_hdr[3] = MBEDTLS_BYTE_0( total_hs_len );
ssl->handshake->update_checksum( ssl, hs_hdr, sizeof( hs_hdr ) );
}
void mbedtls_ssl_add_hs_msg_to_checksum( mbedtls_ssl_context *ssl,
unsigned hs_type,
unsigned char const *msg,
size_t msg_len )
{
mbedtls_ssl_add_hs_hdr_to_checksum( ssl, hs_type, msg_len );
ssl->handshake->update_checksum( ssl, msg, msg_len );
}
void mbedtls_ssl_reset_checksum( mbedtls_ssl_context *ssl )
{
((void) ssl);