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Use mbedtls_xor in TLS messaging layer

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Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
This commit is contained in:
Dave Rodgman 2022-11-22 17:00:26 +00:00
parent 74b345f282
commit c36a56e890
1 changed files with 1 additions and 4 deletions
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5
library/ssl_msg.c
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@ -511,15 +511,12 @@ static void ssl_build_record_nonce( unsigned char *dst_iv,
unsigned char const *dynamic_iv, unsigned char const *dynamic_iv,
size_t dynamic_iv_len ) size_t dynamic_iv_len )
{ {
size_t i;
/* Start with Fixed IV || 0 */ /* Start with Fixed IV || 0 */
memset( dst_iv, 0, dst_iv_len ); memset( dst_iv, 0, dst_iv_len );
memcpy( dst_iv, fixed_iv, fixed_iv_len ); memcpy( dst_iv, fixed_iv, fixed_iv_len );
dst_iv += dst_iv_len - dynamic_iv_len; dst_iv += dst_iv_len - dynamic_iv_len;
for( i = 0; i < dynamic_iv_len; i++ ) mbedtls_xor( dst_iv, dst_iv, dynamic_iv, dynamic_iv_len );
dst_iv[i] ^= dynamic_iv[i];
} }
#endif /* MBEDTLS_GCM_C || MBEDTLS_CCM_C || MBEDTLS_CHACHAPOLY_C */ #endif /* MBEDTLS_GCM_C || MBEDTLS_CCM_C || MBEDTLS_CHACHAPOLY_C */