78 static void update(TCHmacPrng_t prng, const uint8_t *data, unsigned int datalen, const uint8_t *add…  in update()  argument
84 	tc_hmac_set_key(&prng->h, prng->key, sizeof(prng->key));  in update()
87 	(void)tc_hmac_init(&prng->h);  in update()
88 	(void)tc_hmac_update(&prng->h, prng->v, sizeof(prng->v));  in update()
89 	(void)tc_hmac_update(&prng->h, &separator0, sizeof(separator0));  in update()
92 		(void)tc_hmac_update(&prng->h, data, datalen);  in update()
94 		(void)tc_hmac_update(&prng->h, additional_data, additional_datalen);  in update()
96 	(void)tc_hmac_final(prng->key, sizeof(prng->key), &prng->h);  in update()
99 	(void)tc_hmac_set_key(&prng->h, prng->key, sizeof(prng->key));  in update()
102 	(void)tc_hmac_init(&prng->h);  in update()
103 	(void)tc_hmac_update(&prng->h, prng->v, sizeof(prng->v));  in update()
104 	(void)tc_hmac_final(prng->v, sizeof(prng->v), &prng->h);  in update()
110 	tc_hmac_set_key(&prng->h, prng->key, sizeof(prng->key));  in update()
113 	(void)tc_hmac_init(&prng->h);  in update()
114 	(void)tc_hmac_update(&prng->h, prng->v, sizeof(prng->v));  in update()
115 	(void)tc_hmac_update(&prng->h, &separator1, sizeof(separator1));  in update()
116 	(void)tc_hmac_update(&prng->h, data, datalen);  in update()
118 		(void)tc_hmac_update(&prng->h, additional_data, additional_datalen);  in update()
119 	(void)tc_hmac_final(prng->key, sizeof(prng->key), &prng->h);  in update()
122 	(void)tc_hmac_set_key(&prng->h, prng->key, sizeof(prng->key));  in update()
125 	(void)tc_hmac_init(&prng->h);  in update()
126 	(void)tc_hmac_update(&prng->h, prng->v, sizeof(prng->v));  in update()
127 	(void)tc_hmac_final(prng->v, sizeof(prng->v), &prng->h);  in update()
130 int tc_hmac_prng_init(TCHmacPrng_t prng,  in tc_hmac_prng_init()  argument
136 	if (prng == (TCHmacPrng_t) 0 ||  in tc_hmac_prng_init()
143 	_set(prng->key, 0x00, sizeof(prng->key));  in tc_hmac_prng_init()
144 	_set(prng->v, 0x01, sizeof(prng->v));  in tc_hmac_prng_init()
146 	update(prng, personalization, plen, 0, 0);  in tc_hmac_prng_init()
149 	prng->countdown = 0;  in tc_hmac_prng_init()
154 int tc_hmac_prng_reseed(TCHmacPrng_t prng,  in tc_hmac_prng_reseed()  argument
162 	if (prng == (TCHmacPrng_t) 0 ||  in tc_hmac_prng_reseed()
179 			update(prng, seed, seedlen, additional_input, additionallen);  in tc_hmac_prng_reseed()
183 		update(prng, seed, seedlen, 0, 0);  in tc_hmac_prng_reseed()
187 	prng->countdown = MAX_GENS;  in tc_hmac_prng_reseed()
192 int tc_hmac_prng_generate(uint8_t *out, unsigned int outlen, TCHmacPrng_t prng)  in tc_hmac_prng_generate()  argument
198 	    prng == (TCHmacPrng_t) 0 ||  in tc_hmac_prng_generate()
202 	} else if (prng->countdown == 0) {  in tc_hmac_prng_generate()
206 	prng->countdown--;  in tc_hmac_prng_generate()
210 		tc_hmac_set_key(&prng->h, prng->key, sizeof(prng->key));  in tc_hmac_prng_generate()
213 		(void)tc_hmac_init(&prng->h);  in tc_hmac_prng_generate()
214 		(void)tc_hmac_update(&prng->h, prng->v, sizeof(prng->v));  in tc_hmac_prng_generate()
215 		(void)tc_hmac_final(prng->v, sizeof(prng->v), &prng->h);  in tc_hmac_prng_generate()
219 		(void)_copy(out, bufferlen, prng->v, bufferlen);  in tc_hmac_prng_generate()
227 	update(prng, 0, 0, 0, 0);  in tc_hmac_prng_generate()