154 	uint8_t b[Nb * Nk];  in tc_ccm_generation_encryption()  local
161 	b[0] = ((alen > 0) ? 0x40:0) | (((c->mlen - 2) / 2 << 3)) | (1);  in tc_ccm_generation_encryption()
163 		b[i] = c->nonce[i - 1];  in tc_ccm_generation_encryption()
165 	b[14] = (uint8_t)(plen >> 8);  in tc_ccm_generation_encryption()
166 	b[15] = (uint8_t)(plen);  in tc_ccm_generation_encryption()
169 	(void) tc_aes_encrypt(tag, b, c->sched);  in tc_ccm_generation_encryption()
180 	b[0] = 1; /* q - 1 = 2 - 1 = 1 */  in tc_ccm_generation_encryption()
181 	b[14] = b[15] = TC_ZERO_BYTE;  in tc_ccm_generation_encryption()
184 	ccm_ctr_mode(out, plen, payload, plen, b, c->sched);  in tc_ccm_generation_encryption()
186 	b[14] = b[15] = TC_ZERO_BYTE; /* restoring initial counter for ctr_mode (0):*/  in tc_ccm_generation_encryption()
189 	(void) tc_aes_encrypt(b, b, c->sched);  in tc_ccm_generation_encryption()
192 		*out++ = tag[i] ^ b[i];  in tc_ccm_generation_encryption()
215 	uint8_t b[Nb * Nk];  in tc_ccm_decryption_verification()  local
222 	b[0] = 1; /* q - 1 = 2 - 1 = 1 */  in tc_ccm_decryption_verification()
224 		b[i] = c->nonce[i - 1];  in tc_ccm_decryption_verification()
226 	b[14] = b[15] = TC_ZERO_BYTE; /* initial counter value is 0 */  in tc_ccm_decryption_verification()
229 	ccm_ctr_mode(out, plen - c->mlen, payload, plen - c->mlen, b, c->sched);  in tc_ccm_decryption_verification()
231 	b[14] = b[15] = TC_ZERO_BYTE; /* restoring initial counter value (0) */  in tc_ccm_decryption_verification()
234 	(void) tc_aes_encrypt(b, b, c->sched);  in tc_ccm_decryption_verification()
236 		tag[i] = *(payload + plen - c->mlen + i) ^ b[i];  in tc_ccm_decryption_verification()
242 	b[0] = ((alen > 0) ? 0x40:0)|(((c->mlen - 2) / 2 << 3)) | (1);  in tc_ccm_decryption_verification()
244 		b[i] = c->nonce[i - 1];  in tc_ccm_decryption_verification()
246 	b[14] = (uint8_t)((plen - c->mlen) >> 8);  in tc_ccm_decryption_verification()
247 	b[15] = (uint8_t)(plen - c->mlen);  in tc_ccm_decryption_verification()
250 	(void) tc_aes_encrypt(b, b, c->sched);  in tc_ccm_decryption_verification()
252 		ccm_cbc_mac(b, associated_data, alen, 1, c->sched);  in tc_ccm_decryption_verification()
255 		ccm_cbc_mac(b, out, plen - c->mlen, 0, c->sched);  in tc_ccm_decryption_verification()
259 	if (_compare(b, tag, c->mlen) == 0) {  in tc_ccm_decryption_verification()