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ssl_write_server_key_exchange refactor: remove dig_signed_len

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Simplify the redundant varaible dig_signed_len away.

This is in preparation for splitting ssl_write_server_key_exchange
into several functions.
This commit is contained in:
Gilles Peskine 2018-01-06 01:34:21 +01:00
parent 3665f1db9d
commit 3ce9b900d2
1 changed files with 3 additions and 5 deletions
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8
library/ssl_srv.c
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@ -2836,8 +2836,7 @@ static int ssl_write_server_key_exchange( mbedtls_ssl_context *ssl )
#if defined(MBEDTLS_KEY_EXCHANGE__SOME_PFS__ENABLED) #if defined(MBEDTLS_KEY_EXCHANGE__SOME_PFS__ENABLED)
size_t len; size_t len;
#if defined(MBEDTLS_KEY_EXCHANGE__WITH_SERVER_SIGNATURE__ENABLED) #if defined(MBEDTLS_KEY_EXCHANGE__WITH_SERVER_SIGNATURE__ENABLED)
unsigned char *dig_signed = p; unsigned char *dig_signed = NULL;
size_t dig_signed_len = 0;
#endif /* MBEDTLS_KEY_EXCHANGE__WITH_SERVER_SIGNATURE__ENABLED */ #endif /* MBEDTLS_KEY_EXCHANGE__WITH_SERVER_SIGNATURE__ENABLED */
#endif /* MBEDTLS_KEY_EXCHANGE__SOME_PFS__ENABLED */ #endif /* MBEDTLS_KEY_EXCHANGE__SOME_PFS__ENABLED */
@ -2961,7 +2960,6 @@ static int ssl_write_server_key_exchange( mbedtls_ssl_context *ssl )
#if defined(MBEDTLS_KEY_EXCHANGE__WITH_SERVER_SIGNATURE__ENABLED) #if defined(MBEDTLS_KEY_EXCHANGE__WITH_SERVER_SIGNATURE__ENABLED)
dig_signed = p; dig_signed = p;
dig_signed_len = len;
#endif #endif
p += len; p += len;
@ -3022,8 +3020,7 @@ curve_matching_done:
} }
#if defined(MBEDTLS_KEY_EXCHANGE__WITH_SERVER_SIGNATURE__ENABLED) #if defined(MBEDTLS_KEY_EXCHANGE__WITH_SERVER_SIGNATURE__ENABLED)
dig_signed = p; dig_signed = p;
dig_signed_len = len;
#endif #endif
p += len; p += len;
@ -3041,6 +3038,7 @@ curve_matching_done:
#if defined(MBEDTLS_KEY_EXCHANGE__WITH_SERVER_SIGNATURE__ENABLED) #if defined(MBEDTLS_KEY_EXCHANGE__WITH_SERVER_SIGNATURE__ENABLED)
if( mbedtls_ssl_ciphersuite_uses_server_signature( ciphersuite_info ) ) if( mbedtls_ssl_ciphersuite_uses_server_signature( ciphersuite_info ) )
{ {
size_t dig_signed_len = p - dig_signed;
size_t signature_len = 0; size_t signature_len = 0;
unsigned int hashlen = 0; unsigned int hashlen = 0;
unsigned char hash[MBEDTLS_MD_MAX_SIZE]; unsigned char hash[MBEDTLS_MD_MAX_SIZE];