DGNum/hostapd
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Include only the used DH groups in the build

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This reduces the binary size by 3 kB or so when WPS is included in
the build, but IKEv2 is not.
This commit is contained in:
Jouni Malinen 2009-10-11 15:24:40 +03:00
parent b3ad11bb80
commit dd01b1ff9d
3 changed files with 19 additions and 1 deletions
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4
hostapd/Makefile
View file

@ -308,6 +308,7 @@ CFLAGS += -DEAP_SERVER_IKEV2
OBJS += ../src/eap_server/eap_ikev2.o ../src/eap_server/ikev2.o
OBJS += ../src/eap_common/eap_ikev2_common.o ../src/eap_common/ikev2_common.o
NEED_DH_GROUPS=y
NEED_DH_GROUPS_ALL=y
endif
ifdef CONFIG_EAP_TNC
@ -517,6 +518,9 @@ endif
ifdef NEED_DH_GROUPS
OBJS += ../src/crypto/dh_groups.o
ifdef NEED_DH_GROUPS_ALL
CFLAGS += -DALL_DH_GROUPS
endif
endif
ifdef NEED_T_PRF

12
src/crypto/dh_groups.c
View file

@ -19,6 +19,8 @@
#include "dh_groups.h"
#ifdef ALL_DH_GROUPS
/* RFC 4306, B.1. Group 1 - 768 Bit MODP
* Generator: 2
* Prime: 2^768 - 2 ^704 - 1 + 2^64 * { [2^638 pi] + 149686 }
@ -63,6 +65,8 @@ static const u8 dh_group2_prime[128] = {
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
};
#endif /* ALL_DH_GROUPS */
/* RFC 3526, 2. Group 5 - 1536 Bit MODP
* Generator: 2
* Prime: 2^1536 - 2^1472 - 1 + 2^64 * { [2^1406 pi] + 741804 }
@ -95,6 +99,8 @@ static const u8 dh_group5_prime[192] = {
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
};
#ifdef ALL_DH_GROUPS
/* RFC 3526, 3. Group 14 - 2048 Bit MODP
* Generator: 2
* Prime: 2^2048 - 2^1984 - 1 + 2^64 * { [2^1918 pi] + 124476 }
@ -503,6 +509,8 @@ static const u8 dh_group18_prime[1024] = {
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
};
#endif /* ALL_DH_GROUPS */
#define DH_GROUP(id) \
{ id, dh_group ## id ## _generator, sizeof(dh_group ## id ## _generator), \
@ -510,14 +518,16 @@ dh_group ## id ## _prime, sizeof(dh_group ## id ## _prime) }
static struct dh_group dh_groups[] = {
DH_GROUP(5),
#ifdef ALL_DH_GROUPS
DH_GROUP(1),
DH_GROUP(2),
DH_GROUP(5),
DH_GROUP(14),
DH_GROUP(15),
DH_GROUP(16),
DH_GROUP(17),
DH_GROUP(18)
#endif /* ALL_DH_GROUPS */
};
#define NUM_DH_GROUPS (sizeof(dh_groups) / sizeof(dh_groups[0]))

4
wpa_supplicant/Makefile
View file

@ -469,6 +469,7 @@ OBJS_h += ../src/eap_server/ikev2.o
endif
CONFIG_IEEE8021X_EAPOL=y
NEED_DH_GROUPS=y
NEED_DH_GROUPS_ALL=y
endif
ifdef CONFIG_EAP_VENDOR_TEST
@ -998,6 +999,9 @@ endif
ifdef NEED_DH_GROUPS
OBJS += ../src/crypto/dh_groups.o
ifdef NEED_DH_GROUPS_ALL
CFLAGS += -DALL_DH_GROUPS
endif
endif
ifdef NEED_T_PRF