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Clarify the need for calling mbedtls_ssl_derive_keys after extension parsing

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Use a more straightforward condition to note that session resumption
is happening.
Co-authored-by: Ronald Cron <ronald.cron@arm.com>
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
This commit is contained in:
Andrzej Kurek 2022-07-06 03:26:55 -04:00
parent 3a29e9cf57
commit 21b50808cd
1 changed files with 6 additions and 1 deletions
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7
library/ssl_tls12_client.c
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@ -1644,7 +1644,12 @@ static int ssl_parse_server_hello( mbedtls_ssl_context *ssl )
}
}
if( ssl->state == MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC )
/*
* mbedtls_ssl_derive_keys() has to be called after the parsing of the
* extensions. It sets the transform data for the resumed session which in
* case of DTLS includes the server CID extracted from the CID extension.
*/
if( ssl->handshake->resume )
{
if( ( ret = mbedtls_ssl_derive_keys( ssl ) ) != 0 )
{