diff options
Diffstat (limited to 'debian/vendor-h2o/deps/picotls/deps/cifra/src/drbg.h')
| -rw-r--r-- | debian/vendor-h2o/deps/picotls/deps/cifra/src/drbg.h | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/debian/vendor-h2o/deps/picotls/deps/cifra/src/drbg.h b/debian/vendor-h2o/deps/picotls/deps/cifra/src/drbg.h deleted file mode 100644 index 18a1070..0000000 --- a/debian/vendor-h2o/deps/picotls/deps/cifra/src/drbg.h +++ /dev/null @@ -1,191 +0,0 @@ -/* - * cifra - embedded cryptography library - * Written in 2016 by Joseph Birr-Pixton <jpixton@gmail.com> - * - * To the extent possible under law, the author(s) have dedicated all - * copyright and related and neighboring rights to this software to the - * public domain worldwide. This software is distributed without any - * warranty. - * - * You should have received a copy of the CC0 Public Domain Dedication - * along with this software. If not, see - * <http://creativecommons.org/publicdomain/zero/1.0/>. - */ - -#ifndef DRBG_H -#define DRBG_H - -#include <stddef.h> -#include <stdint.h> - -#include "chash.h" -#include "hmac.h" - -/** - * Hash_DRBG - * ========= - * This is Hash_DRBG from SP800-90A rev 1, with SHA256 as - * the underlying hash function. - * - * This generator enforces a `reseed_interval` of 2^32-1: - * use :c:func:`cf_hash_drbg_sha256_needs_reseed` to check - * whether you need to reseed before use, and reseed using - * :c:func:`cf_hash_drbg_sha256_reseed`. If you try to use - * the generator when it thinks it needs reseeding, it will - * call `abort`. - * - * Internally it enforces a `max_number_of_bits_per_request` - * of 2^19 bits. It sorts out chunking up multiple requests - * for you though, so feel free to ask for more than 2^16 bytes - * at a time. If you provide additional input when doing that, - * it is added only once, on the first subrequest. - * - * It does not enforce any `max_length` or - * `max_personalization_string_length`. - */ - -/* .. c:type:: cf_hash_drbg_sha256 - * Hash_DRBG with SHA256 context. - * - * .. c:member:: cf_hash_drbg_sha256.V - * Current internal state. - * - * .. c:member:: cf_hash_drbg_sha256.C - * Current update offset. - * - * .. c:member:: cf_hash_drbg_sha256.reseed_counter - * Current number of times entropy has been extracted from - * generator. - */ -typedef struct -{ - uint8_t V[440/8]; - uint8_t C[440/8]; - uint32_t reseed_counter; -} cf_hash_drbg_sha256; - -/* .. c:function:: $DECL - * Initialises the generator state `ctx`, using the provided `entropy`, - * `nonce` and personalisation string `persn`. - */ -extern void cf_hash_drbg_sha256_init(cf_hash_drbg_sha256 *ctx, - const void *entropy, size_t nentropy, - const void *nonce, size_t nnonce, - const void *persn, size_t npersn); - -/* .. c:function:: $DECL - * Returns non-zero if the generator needs reseeding. If - * this function returns non-zero, the next :c:func:`cf_hash_drbg_sha256_gen` - * or :c:func:`cf_hash_drbg_sha256_gen_additional` call will call `abort`. - */ -extern uint32_t cf_hash_drbg_sha256_needs_reseed(const cf_hash_drbg_sha256 *ctx); - -/* .. c:function:: $DECL - * Reseeds the generator with the given `entropy` and additional data `addnl`. - */ -extern void cf_hash_drbg_sha256_reseed(cf_hash_drbg_sha256 *ctx, - const void *entropy, size_t nentropy, - const void *addnl, size_t naddnl); - -/* .. c:function:: $DECL - * Generates pseudo-random output, writing `nout` bytes at `out`. - * This function aborts if the generator needs seeding. - */ -extern void cf_hash_drbg_sha256_gen(cf_hash_drbg_sha256 *ctx, - void *out, size_t nout); - -/* .. c:function:: $DECL - * Generates pseudo-random output, writing `nout` bytes at `out`. - * At the same time, `addnl` is input to the generator as further - * entropy. - * This function aborts if the generator needs seeding. - */ -extern void cf_hash_drbg_sha256_gen_additional(cf_hash_drbg_sha256 *ctx, - const void *addnl, size_t naddnl, - void *out, size_t nout); - -/** - * HMAC_DRBG - * ========= - * This is HMAC_DRBG from SP800-90a r1 with any hash function. - * - * This generator enforces a `reseed_interval` of 2^32-1: - * use :c:func:`cf_hmac_drbg_needs_reseed` to check whether - * you need to reseed before use, and reseed using - * :c:func:`cf_hmac_drbg_reseed`. If you try to use the - * generator when it thinks it needs reseeding, it will - * call `abort`. - * - * Internally it enforces a `max_number_of_bits_per_request` - * of 2^19 bits. It sorts out chunking up multiple requests - * for you though, so feel free to ask for more than 2^16 bytes - * at a time. If you provide additional input when doing that, - * it is added only once, on the first subrequest. - * - * It does not enforce any `max_length` or - * `max_personalization_string_length`. - */ - -/* .. c:type:: cf_hmac_drbg - * HMAC_DRBG context. - * - * .. c:member:: cf_hmac_drbg.V - * Current internal state. - * - * .. c:member:: cf_hmac_drbg.hmac - * Current HMAC context, with key scheduled in it. - * - * .. c:member:: cf_hmac_drbg.reseed_counter - * Current number of times entropy has been extracted from - * generator. - */ -typedef struct -{ - uint8_t V[CF_MAXHASH]; - cf_hmac_ctx hmac; /* pristine context with key scheduled */ - uint32_t reseed_counter; -} cf_hmac_drbg; - -/* .. c:function:: $DECL - * Initialises the generator state `ctx`, using the provided `entropy`, - * `nonce` and personalisation string `persn`. - */ -extern void cf_hmac_drbg_init(cf_hmac_drbg *ctx, - const cf_chash *hash, - const void *entropy, size_t nentropy, - const void *nonce, size_t nnonce, - const void *persn, size_t npersn); - -/* .. c:function:: $DECL - * Returns non-zero if the generator needs reseeding. If - * this function returns non-zero, the next :c:func:`cf_hmac_drbg_gen` - * or :c:func:`cf_hmac_drbg_gen_additional` call will call `abort`. - */ -extern uint32_t cf_hmac_drbg_needs_reseed(const cf_hmac_drbg *ctx); - -/* .. c:function:: $DECL - * Reseeds the generator with the given `entropy` and additional data - * `addnl`. - */ -extern void cf_hmac_drbg_reseed(cf_hmac_drbg *ctx, - const void *entropy, size_t nentropy, - const void *addnl, size_t naddnl); - -/* .. c:function:: $DECL - * Generates pseudo-random output, writing `nout` bytes at `out`. - * This function aborts if the generator needs seeding. - */ -extern void cf_hmac_drbg_gen(cf_hmac_drbg *ctx, - void *out, size_t nout); - -/* .. c:function:: $DECL - * Generates pseudo-random output, writing `nout` bytes at `out`. - * At the same time, `addnl` is input to the generator as further - * entropy. - * This function aborts if the generator needs seeding. - */ -extern void cf_hmac_drbg_gen_additional(cf_hmac_drbg *ctx, - const void *addnl, size_t naddnl, - void *out, size_t nout); - -#endif |