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Update zuc.c

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This commit is contained in:
Zhi Guan
2024-04-27 17:08:34 +08:00
parent 83573a56ed
commit 6147f7af55
1 changed files with 32 additions and 5 deletions
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37
src/zuc.c
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@@ -77,10 +77,11 @@ static const uint8_t S1[256] = {
ROT32((X), 22) ^ \
ROT32((X), 30))
#define LFSRWithInitialisationMode(u) \
V = LFSR[0]; \
ADD31(V, ROT31(LFSR[0], 8)); \
ADD31(V, ROT31(LFSR[4], 20)); \
ADD31(V, ROT31(LFSR[ 0], 8)); \
ADD31(V, ROT31(LFSR[ 4], 20)); \
ADD31(V, ROT31(LFSR[10], 21)); \
ADD31(V, ROT31(LFSR[13], 17)); \
ADD31(V, ROT31(LFSR[15], 15)); \
@@ -92,8 +93,8 @@ static const uint8_t S1[256] = {
{ \
int j; \
uint64_t a = LFSR[0]; \
a += ((uint64_t)LFSR[0]) << 8; \
a += ((uint64_t)LFSR[4]) << 20; \
a += ((uint64_t)LFSR[ 0]) << 8; \
a += ((uint64_t)LFSR[ 4]) << 20; \
a += ((uint64_t)LFSR[10]) << 21; \
a += ((uint64_t)LFSR[13]) << 17; \
a += ((uint64_t)LFSR[15]) << 15; \
@@ -128,6 +129,7 @@ static const uint8_t S1[256] = {
((uint32_t)(c) << 8) | \
((uint32_t)(d)))
#if 0
#define F_(X1,X2) \
W1 = R1 + X1; \
W2 = R2 ^ X2; \
@@ -141,6 +143,24 @@ static const uint8_t S1[256] = {
S1[(V >> 16) & 0xFF], \
S0[(V >> 8) & 0xFF], \
S1[V & 0xFF])
#else
#define F_(X1,X2) \
W1 = R1 + X1; \
W2 = R2 ^ X2; \
U = L1((W1 << 16) | (W2 >> 16)); \
V = L2((W2 << 16) | (W1 >> 16)); \
T0 = S0[(U >> 24) ]; \
T2 = S0[(U >> 8) & 0xFF]; \
T4 = S0[(V >> 24) ]; \
T6 = S0[(V >> 8) & 0xFF]; \
T1 = S1[(U >> 16) & 0xFF]; \
T3 = S1[(U ) & 0xFF]; \
T5 = S1[(V >> 16) & 0xFF]; \
T7 = S1[(V ) & 0xFF]; \
R1 = MAKEU32(T0, T1, T2, T3); \
R2 = MAKEU32(T4, T5, T6, T7)
#endif
#define F(X0,X1,X2) \
(X0 ^ R1) + R2; \
@@ -152,8 +172,10 @@ void zuc_init(ZUC_STATE *state, const uint8_t *user_key, const uint8_t *iv)
uint32_t R1, R2;
uint32_t X0, X1, X2;
uint32_t W, W1, W2, U, V;
uint32_t T0, T1, T2, T3, T4, T5, T6, T7;
int i;
for (i = 0; i < 16; i++) {
LFSR[i] = MAKEU31(user_key[i], KD[i], iv[i]);
}
@@ -182,6 +204,7 @@ uint32_t zuc_generate_keyword(ZUC_STATE *state)
uint32_t R2 = state->R2;
uint32_t X0, X1, X2, X3;
uint32_t W1, W2, U, V;
uint32_t T0, T1, T2, T3, T4, T5, T6, T7;
uint32_t Z;
BitReconstruction4(X0, X1, X2, X3);
@@ -201,6 +224,7 @@ void zuc_generate_keystream(ZUC_STATE *state, size_t nwords, uint32_t *keystream
uint32_t R2 = state->R2;
uint32_t X0, X1, X2, X3;
uint32_t W1, W2, U, V;
uint32_t T0, T1, T2, T3, T4, T5, T6, T7;
size_t i;
for (i = 0; i < nwords; i ++) {
@@ -220,6 +244,7 @@ void zuc_encrypt(ZUC_STATE *state, const uint8_t *in, size_t inlen, uint8_t *out
uint32_t R2 = state->R2;
uint32_t X0, X1, X2, X3;
uint32_t W1, W2, U, V;
uint32_t T0, T1, T2, T3, T4, T5, T6, T7;
uint32_t Z;
uint8_t block[4];
size_t nwords = inlen / sizeof(uint32_t);
@@ -264,6 +289,7 @@ void zuc_mac_update(ZUC_MAC_CTX *ctx, const uint8_t *data, size_t len)
ZUC_UINT32 R2 = ctx->R2;
ZUC_UINT32 X0, X1, X2, X3;
ZUC_UINT32 W1, W2, U, V;
uint32_t T0, T1, T2, T3, T4, T5, T6, T7;
size_t i;
if (!data || !len) {
@@ -339,9 +365,9 @@ void zuc_mac_finish(ZUC_MAC_CTX *ctx, const uint8_t *data, size_t nbits, uint8_t
ZUC_UINT32 R2 = ctx->R2;
ZUC_UINT32 X0, X1, X2, X3;
ZUC_UINT32 W1, W2, U, V;
uint32_t T0, T1, T2, T3, T4, T5, T6, T7;
size_t i;
if (!data)
nbits = 0;
@@ -418,6 +444,7 @@ static void zuc256_set_mac_key(ZUC_STATE *key, const uint8_t K[32],
uint32_t R1, R2;
uint32_t X0, X1, X2;
uint32_t W, W1, W2, U, V;
uint32_t T0, T1, T2, T3, T4, T5, T6, T7;
const ZUC_UINT7 *D;
int i;