include/crypto/drbg.h

2  * DRBG based on NIST SP800-90A
12  * 2. Redistributions in binary form must reproduce the above copyright
23  * the restrictions contained in a BSD-style copyright.)
52 #include <linux/fips.h>
60  * SP800-90A requires the concatenation of different data. To avoid copying
76 	string->buf = buf;  in drbg_string_fill()
77 	string->len = len;  in drbg_string_fill()
78 	INIT_LIST_HEAD(&string->list);  in drbg_string_fill()
121 	/* Number of RNG requests since last reseed -- 10.1.1.1 1c) */
139 	unsigned char *prev;	/* FIPS 140-2 continuous test value */
148 	if (drbg && drbg->core)  in drbg_statelen()
149 		return drbg->core->statelen;  in drbg_statelen()
155 	if (drbg && drbg->core)  in drbg_blocklen()
156 		return drbg->core->blocklen_bytes;  in drbg_blocklen()
162 	if (drbg && drbg->core)  in drbg_keylen()
163 		return (drbg->core->statelen - drbg->core->blocklen_bytes);  in drbg_keylen()
169 	/* SP800-90A requires the limit 2**19 bits, but we return bytes */  in drbg_max_request_bytes()
175 	/* SP800-90A requires 2**35 bytes additional info str / pers str */  in drbg_max_addtl()
178 	 * SP800-90A allows smaller maximum numbers to be returned -- we  in drbg_max_addtl()
179 	 * return SIZE_MAX - 1 to allow the verification of the enforcement  in drbg_max_addtl()
182 	return (SIZE_MAX - 1);  in drbg_max_addtl()
190 	/* SP800-90A requires 2**48 maximum requests before reseeding */  in drbg_max_requests()
198  * @drng DRBG handle -- see crypto_rng_get_bytes
199  * @outbuf output buffer -- see crypto_rng_get_bytes
200  * @outlen length of output buffer -- see crypto_rng_get_bytes
211 	return crypto_rng_generate(drng, addtl->buf, addtl->len,  in crypto_drbg_get_bytes_addtl()
222  * @drng DRBG handle -- see crypto_rng_get_bytes
223  * @outbuf output buffer -- see crypto_rng_get_bytes
224  * @outlen length of output buffer -- see crypto_rng_get_bytes
237 	crypto_rng_set_entropy(drng, test_data->testentropy->buf,  in crypto_drbg_get_bytes_addtl_test()
238 			       test_data->testentropy->len);  in crypto_drbg_get_bytes_addtl_test()
239 	return crypto_rng_generate(drng, addtl->buf, addtl->len,  in crypto_drbg_get_bytes_addtl_test()
249  * @drng DRBG handle -- see crypto_rng_reset
261 	crypto_rng_set_entropy(drng, test_data->testentropy->buf,  in crypto_drbg_reset_test()
262 			       test_data->testentropy->len);  in crypto_drbg_reset_test()
263 	return crypto_rng_reset(drng, pers->buf, pers->len);  in crypto_drbg_reset_test()
269 #define DRBG_HASH	((drbg_flag_t)1<<2)