diff options
Diffstat (limited to 'openssl/crypto/seed/seed.c')
| -rw-r--r-- | openssl/crypto/seed/seed.c | 45 |
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); |