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Merge remote-tracking branch 'restricted/pr/437' into development-restricted

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This commit is contained in:
Simon Butcher 2018-08-28 15:33:59 +01:00
commit 3af567d4a7
1 changed files with 6 additions and 2 deletions
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8
library/ssl_tls.c
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@ -1712,6 +1712,8 @@ static int ssl_encrypt_buf( mbedtls_ssl_context *ssl )
#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
if( auth_done == 0 )
{
unsigned char mac[MBEDTLS_SSL_MAC_ADD];
/*
* MAC(MAC_write_key, seq_num +
* TLSCipherText.type +
@ -1734,10 +1736,12 @@ static int ssl_encrypt_buf( mbedtls_ssl_context *ssl )
mbedtls_md_hmac_update( &ssl->transform_out->md_ctx_enc, pseudo_hdr, 13 );
mbedtls_md_hmac_update( &ssl->transform_out->md_ctx_enc,
ssl->out_iv, ssl->out_msglen );
mbedtls_md_hmac_finish( &ssl->transform_out->md_ctx_enc,
ssl->out_iv + ssl->out_msglen );
mbedtls_md_hmac_finish( &ssl->transform_out->md_ctx_enc, mac );
mbedtls_md_hmac_reset( &ssl->transform_out->md_ctx_enc );
memcpy( ssl->out_iv + ssl->out_msglen, mac,
ssl->transform_out->maclen );
ssl->out_msglen += ssl->transform_out->maclen;
auth_done++;
}