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Diffstat (limited to 'openssl/crypto/seed/seed.c')
-rw-r--r--openssl/crypto/seed/seed.c45
1 files changed, 42 insertions, 3 deletions
diff --git a/openssl/crypto/seed/seed.c b/openssl/crypto/seed/seed.c
index 125dd7d66..2bc384a19 100644
--- a/openssl/crypto/seed/seed.c
+++ b/openssl/crypto/seed/seed.c
@@ -35,7 +35,7 @@
#include <openssl/seed.h>
#include "seed_locl.h"
-static seed_word SS[4][256] = { {
+static const seed_word SS[4][256] = { {
0x2989a1a8, 0x05858184, 0x16c6d2d4, 0x13c3d3d0, 0x14445054, 0x1d0d111c, 0x2c8ca0ac, 0x25052124,
0x1d4d515c, 0x03434340, 0x18081018, 0x1e0e121c, 0x11415150, 0x3cccf0fc, 0x0acac2c8, 0x23436360,
0x28082028, 0x04444044, 0x20002020, 0x1d8d919c, 0x20c0e0e0, 0x22c2e2e0, 0x08c8c0c8, 0x17071314,
@@ -187,6 +187,11 @@ static seed_word SS[4][256] = { {
#define KC14 0xde6e678d
#define KC15 0xbcdccf1b
+#if defined(OPENSSL_SMALL_FOOTPRINT)
+static const seed_word KC[] = {
+ KC0, KC1, KC2, KC3, KC4, KC5, KC6, KC7,
+ KC8, KC9, KC10, KC11, KC12, KC13, KC14, KC15 };
+#endif
void SEED_set_key(const unsigned char rawkey[SEED_KEY_LENGTH], SEED_KEY_SCHEDULE *ks)
{
@@ -201,6 +206,8 @@ void SEED_set_key(const unsigned char rawkey[SEED_KEY_LENGTH], SEED_KEY_SCHEDULE
t0 = (x1 + x3 - KC0) & 0xffffffff;
t1 = (x2 - x4 + KC0) & 0xffffffff; KEYUPDATE_TEMP(t0, t1, &ks->data[0]);
KEYSCHEDULE_UPDATE1(t0, t1, x1, x2, x3, x4, KC1); KEYUPDATE_TEMP(t0, t1, &ks->data[2]);
+
+#if !defined(OPENSSL_SMALL_FOOTPRINT)
KEYSCHEDULE_UPDATE0(t0, t1, x1, x2, x3, x4, KC2); KEYUPDATE_TEMP(t0, t1, &ks->data[4]);
KEYSCHEDULE_UPDATE1(t0, t1, x1, x2, x3, x4, KC3); KEYUPDATE_TEMP(t0, t1, &ks->data[6]);
KEYSCHEDULE_UPDATE0(t0, t1, x1, x2, x3, x4, KC4); KEYUPDATE_TEMP(t0, t1, &ks->data[8]);
@@ -215,6 +222,17 @@ void SEED_set_key(const unsigned char rawkey[SEED_KEY_LENGTH], SEED_KEY_SCHEDULE
KEYSCHEDULE_UPDATE1(t0, t1, x1, x2, x3, x4, KC13); KEYUPDATE_TEMP(t0, t1, &ks->data[26]);
KEYSCHEDULE_UPDATE0(t0, t1, x1, x2, x3, x4, KC14); KEYUPDATE_TEMP(t0, t1, &ks->data[28]);
KEYSCHEDULE_UPDATE1(t0, t1, x1, x2, x3, x4, KC15); KEYUPDATE_TEMP(t0, t1, &ks->data[30]);
+#else
+ {
+ int i;
+ for (i=2; i<16; i+=2) {
+ KEYSCHEDULE_UPDATE0(t0, t1, x1, x2, x3, x4, KC[i]);
+ KEYUPDATE_TEMP(t0, t1, &ks->data[i*2]);
+ KEYSCHEDULE_UPDATE1(t0, t1, x1, x2, x3, x4, KC[i+1]);
+ KEYUPDATE_TEMP(t0, t1, &ks->data[i*2+2]);
+ }
+ }
+#endif
}
void SEED_encrypt(const unsigned char s[SEED_BLOCK_SIZE], unsigned char d[SEED_BLOCK_SIZE], const SEED_KEY_SCHEDULE *ks)
@@ -226,7 +244,8 @@ void SEED_encrypt(const unsigned char s[SEED_BLOCK_SIZE], unsigned char d[SEED_B
char2word(s+4, x2);
char2word(s+8, x3);
char2word(s+12, x4);
-
+
+#if !defined(OPENSSL_SMALL_FOOTPRINT)
E_SEED(t0, t1, x1, x2, x3, x4, 0);
E_SEED(t0, t1, x3, x4, x1, x2, 2);
E_SEED(t0, t1, x1, x2, x3, x4, 4);
@@ -243,6 +262,15 @@ void SEED_encrypt(const unsigned char s[SEED_BLOCK_SIZE], unsigned char d[SEED_B
E_SEED(t0, t1, x3, x4, x1, x2, 26);
E_SEED(t0, t1, x1, x2, x3, x4, 28);
E_SEED(t0, t1, x3, x4, x1, x2, 30);
+#else
+ {
+ int i;
+ for (i=0;i<30;i+=4) {
+ E_SEED(t0,t1,x1,x2,x3,x4,i);
+ E_SEED(t0,t1,x3,x4,x1,x2,i+2);
+ }
+ }
+#endif
word2char(x3, d);
word2char(x4, d+4);
@@ -259,7 +287,8 @@ void SEED_decrypt(const unsigned char s[SEED_BLOCK_SIZE], unsigned char d[SEED_B
char2word(s+4, x2);
char2word(s+8, x3);
char2word(s+12, x4);
-
+
+#if !defined(OPENSSL_SMALL_FOOTPRINT)
E_SEED(t0, t1, x1, x2, x3, x4, 30);
E_SEED(t0, t1, x3, x4, x1, x2, 28);
E_SEED(t0, t1, x1, x2, x3, x4, 26);
@@ -276,6 +305,16 @@ void SEED_decrypt(const unsigned char s[SEED_BLOCK_SIZE], unsigned char d[SEED_B
E_SEED(t0, t1, x3, x4, x1, x2, 4);
E_SEED(t0, t1, x1, x2, x3, x4, 2);
E_SEED(t0, t1, x3, x4, x1, x2, 0);
+#else
+ {
+ int i;
+ for (i=30; i>0; i-=4) {
+ E_SEED(t0, t1, x1, x2, x3, x4, i);
+ E_SEED(t0, t1, x3, x4, x1, x2, i-2);
+
+ }
+ }
+#endif
word2char(x3, d);
word2char(x4, d+4);