/*the last public function; generates ciphertext*/
static void crypt_all (int count)
{
unsigned char password[PLAINTEXT_LENGTH];
unsigned char lotus_matrix[64], *lotus_matrix1, *lotus_matrix2, *lotus_matrix3, *lotus_matrix4;
int i;
int password_length;
password_length = strlen (saved_key);
memset (password, (PLAINTEXT_LENGTH - password_length), PLAINTEXT_LENGTH);
lotus_matrix1 = lotus_matrix;
lotus_matrix2 = lotus_matrix1 + 16;
lotus_matrix3 = lotus_matrix2 + 16;
lotus_matrix4 = lotus_matrix3 + 16;
memcpy (password, saved_key, password_length);
memset (lotus_matrix1, 0, 16);
memcpy (lotus_matrix2, password, 16);
memcpy (lotus_matrix3, password, 16);
lotus_transform_password (lotus_matrix2, lotus_matrix4);
lotus_mix (lotus_matrix);
memcpy (lotus_matrix2, lotus_matrix4, 16);
for (i = 0; i < 16; i++)
{
lotus_matrix3[i] = lotus_matrix1[i] ^ lotus_matrix2[i];
}
lotus_mix (lotus_matrix);
memcpy (crypt_key, lotus_matrix1, BINARY_SIZE);
}
/*the last public function; generates ciphertext*/
static int crypt_all(int *pcount, struct db_salt *salt)
{
int count = *pcount;
int index;
#ifdef _OPENMP
#pragma omp parallel for
#endif
for (index = 0; index < count; index += 2) {
struct {
union {
unsigned char m[64];
unsigned char m4[4][16];
ARCH_WORD m4w[4][16 / ARCH_SIZE];
} u;
} ctx[2];
int password_length;
memset(ctx[0].u.m4[0], 0, 16);
password_length = strlen(saved_key[index]);
memset(ctx[0].u.m4[1], (PLAINTEXT_LENGTH - password_length), PLAINTEXT_LENGTH);
memcpy(ctx[0].u.m4[1], saved_key[index], password_length);
memcpy(ctx[0].u.m4[2], ctx[0].u.m4[1], 16);
memset(ctx[1].u.m4[0], 0, 16);
password_length = strlen(saved_key[index + 1]);
memset(ctx[1].u.m4[1], (PLAINTEXT_LENGTH - password_length), PLAINTEXT_LENGTH);
memcpy(ctx[1].u.m4[1], saved_key[index + 1], password_length);
memcpy(ctx[1].u.m4[2], ctx[1].u.m4[1], 16);
lotus_transform_password(ctx[0].u.m4[1], ctx[0].u.m4[3],
ctx[1].u.m4[1], ctx[1].u.m4[3]);
lotus_mix(ctx[0].u.m, ctx[1].u.m);
memcpy(ctx[0].u.m4[1], ctx[0].u.m4[3], 16);
memcpy(ctx[1].u.m4[1], ctx[1].u.m4[3], 16);
{
int i;
for (i = 0; i < 16 / ARCH_SIZE; i++) {
ctx[0].u.m4w[2][i] = ctx[0].u.m4w[0][i] ^ ctx[0].u.m4w[1][i];
ctx[1].u.m4w[2][i] = ctx[1].u.m4w[0][i] ^ ctx[1].u.m4w[1][i];
}
}
lotus_mix(ctx[0].u.m, ctx[1].u.m);
memcpy(crypt_key[index], ctx[0].u.m4[0], BINARY_SIZE);
memcpy(crypt_key[index + 1], ctx[1].u.m4[0], BINARY_SIZE);
}
return count;
}
