34 int xtea_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey)  in xtea_setup()  argument
39    LTC_ARGCHK(skey != NULL);  in xtea_setup()
57        skey->xtea.A[x] = (sum + K[sum&3]) & 0xFFFFFFFFUL;  in xtea_setup()
59        skey->xtea.B[x] = (sum + K[(sum>>11)&3]) & 0xFFFFFFFFUL;  in xtea_setup()
76 int xtea_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *skey)  in xtea_ecb_encrypt()  argument
83    LTC_ARGCHK(skey != NULL);  in xtea_ecb_encrypt()
88        y = (y + ((((z<<4)^(z>>5)) + z) ^ skey->xtea.A[r])) & 0xFFFFFFFFUL;  in xtea_ecb_encrypt()
89        z = (z + ((((y<<4)^(y>>5)) + y) ^ skey->xtea.B[r])) & 0xFFFFFFFFUL;  in xtea_ecb_encrypt()
91        y = (y + ((((z<<4)^(z>>5)) + z) ^ skey->xtea.A[r+1])) & 0xFFFFFFFFUL;  in xtea_ecb_encrypt()
92        z = (z + ((((y<<4)^(y>>5)) + y) ^ skey->xtea.B[r+1])) & 0xFFFFFFFFUL;  in xtea_ecb_encrypt()
94        y = (y + ((((z<<4)^(z>>5)) + z) ^ skey->xtea.A[r+2])) & 0xFFFFFFFFUL;  in xtea_ecb_encrypt()
95        z = (z + ((((y<<4)^(y>>5)) + y) ^ skey->xtea.B[r+2])) & 0xFFFFFFFFUL;  in xtea_ecb_encrypt()
97        y = (y + ((((z<<4)^(z>>5)) + z) ^ skey->xtea.A[r+3])) & 0xFFFFFFFFUL;  in xtea_ecb_encrypt()
98        z = (z + ((((y<<4)^(y>>5)) + y) ^ skey->xtea.B[r+3])) & 0xFFFFFFFFUL;  in xtea_ecb_encrypt()
112 int xtea_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey)  in xtea_ecb_decrypt()  argument
119    LTC_ARGCHK(skey != NULL);  in xtea_ecb_decrypt()
124        z = (z - ((((y<<4)^(y>>5)) + y) ^ skey->xtea.B[r])) & 0xFFFFFFFFUL;  in xtea_ecb_decrypt()
125        y = (y - ((((z<<4)^(z>>5)) + z) ^ skey->xtea.A[r])) & 0xFFFFFFFFUL;  in xtea_ecb_decrypt()
127        z = (z - ((((y<<4)^(y>>5)) + y) ^ skey->xtea.B[r-1])) & 0xFFFFFFFFUL;  in xtea_ecb_decrypt()
128        y = (y - ((((z<<4)^(z>>5)) + z) ^ skey->xtea.A[r-1])) & 0xFFFFFFFFUL;  in xtea_ecb_decrypt()
130        z = (z - ((((y<<4)^(y>>5)) + y) ^ skey->xtea.B[r-2])) & 0xFFFFFFFFUL;  in xtea_ecb_decrypt()
131        y = (y - ((((z<<4)^(z>>5)) + z) ^ skey->xtea.A[r-2])) & 0xFFFFFFFFUL;  in xtea_ecb_decrypt()
133        z = (z - ((((y<<4)^(y>>5)) + y) ^ skey->xtea.B[r-3])) & 0xFFFFFFFFUL;  in xtea_ecb_decrypt()
134        y = (y - ((((z<<4)^(z>>5)) + z) ^ skey->xtea.A[r-3])) & 0xFFFFFFFFUL;  in xtea_ecb_decrypt()
158    symmetric_key skey;  in xtea_test()
161    if ((err = xtea_setup(key, 16, 0, &skey)) != CRYPT_OK)  {  in xtea_test()
164    xtea_ecb_encrypt(pt, tmp[0], &skey);  in xtea_test()
165    xtea_ecb_decrypt(tmp[0], tmp[1], &skey);  in xtea_test()
173       for (y = 0; y < 1000; y++) xtea_ecb_encrypt(tmp[0], tmp[0], &skey);  in xtea_test()
174       for (y = 0; y < 1000; y++) xtea_ecb_decrypt(tmp[0], tmp[0], &skey);  in xtea_test()
184 void xtea_done(symmetric_key *skey)  in xtea_done()  argument