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Merge pull request #4851 from hanno-arm/hs_msg_without_checksum

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Add handshake message writing variant that doesn't update checksum
This commit is contained in:
Manuel Pégourié-Gonnard
2021-08-12 11:54:10 +02:00
committed by GitHub
parent 2aec149e13 f3cce8b0e1
commit 409c8f6e1b
2 changed files with 10 additions and 3 deletions
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5
library/ssl_msg.c
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@ -2389,7 +2389,8 @@ void mbedtls_ssl_send_flight_completed( mbedtls_ssl_context *ssl )
* (including handshake headers but excluding record headers)
* - ssl->out_msg: the record contents (handshake headers + content)
*/
int mbedtls_ssl_write_handshake_msg( mbedtls_ssl_context *ssl )
int mbedtls_ssl_write_handshake_msg_ext( mbedtls_ssl_context *ssl,
int update_checksum )
{
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
const size_t hs_len = ssl->out_msglen - 4;
@ -2498,7 +2499,7 @@ int mbedtls_ssl_write_handshake_msg( mbedtls_ssl_context *ssl )
#endif /* MBEDTLS_SSL_PROTO_DTLS */
/* Update running hashes of handshake messages seen */
if( hs_type != MBEDTLS_SSL_HS_HELLO_REQUEST )
if( hs_type != MBEDTLS_SSL_HS_HELLO_REQUEST && update_checksum != 0 )
ssl->handshake->update_checksum( ssl, ssl->out_msg, ssl->out_msglen );
}