Mercurial > dropbear
view libtomcrypt/src/headers/tomcrypt_prng.h @ 1492:bd46cf0e245a
update some dependencies
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Wed, 14 Feb 2018 00:17:30 +0800 |
parents | 6dba84798cd5 |
children |
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/* LibTomCrypt, modular cryptographic library -- Tom St Denis * * LibTomCrypt is a library that provides various cryptographic * algorithms in a highly modular and flexible manner. * * The library is free for all purposes without any express * guarantee it works. */ /* ---- PRNG Stuff ---- */ #ifdef LTC_YARROW struct yarrow_prng { int cipher, hash; unsigned char pool[MAXBLOCKSIZE]; symmetric_CTR ctr; }; #endif #ifdef LTC_RC4 struct rc4_prng { rc4_state s; }; #endif #ifdef LTC_CHACHA20_PRNG struct chacha20_prng { chacha_state s; /* chacha state */ unsigned char ent[40]; /* entropy buffer */ unsigned long idx; /* entropy counter */ }; #endif #ifdef LTC_FORTUNA struct fortuna_prng { hash_state pool[LTC_FORTUNA_POOLS]; /* the pools */ symmetric_key skey; unsigned char K[32], /* the current key */ IV[16]; /* IV for CTR mode */ unsigned long pool_idx, /* current pool we will add to */ pool0_len, /* length of 0'th pool */ wd; ulong64 reset_cnt; /* number of times we have reset */ }; #endif #ifdef LTC_SOBER128 struct sober128_prng { sober128_state s; /* sober128 state */ unsigned char ent[40]; /* entropy buffer */ unsigned long idx; /* entropy counter */ }; #endif typedef struct { union { char dummy[1]; #ifdef LTC_YARROW struct yarrow_prng yarrow; #endif #ifdef LTC_RC4 struct rc4_prng rc4; #endif #ifdef LTC_CHACHA20_PRNG struct chacha20_prng chacha; #endif #ifdef LTC_FORTUNA struct fortuna_prng fortuna; #endif #ifdef LTC_SOBER128 struct sober128_prng sober128; #endif }; short ready; /* ready flag 0-1 */ LTC_MUTEX_TYPE(lock) /* lock */ } prng_state; /** PRNG descriptor */ extern struct ltc_prng_descriptor { /** Name of the PRNG */ const char *name; /** size in bytes of exported state */ int export_size; /** Start a PRNG state @param prng [out] The state to initialize @return CRYPT_OK if successful */ int (*start)(prng_state *prng); /** Add entropy to the PRNG @param in The entropy @param inlen Length of the entropy (octets)\ @param prng The PRNG state @return CRYPT_OK if successful */ int (*add_entropy)(const unsigned char *in, unsigned long inlen, prng_state *prng); /** Ready a PRNG state to read from @param prng The PRNG state to ready @return CRYPT_OK if successful */ int (*ready)(prng_state *prng); /** Read from the PRNG @param out [out] Where to store the data @param outlen Length of data desired (octets) @param prng The PRNG state to read from @return Number of octets read */ unsigned long (*read)(unsigned char *out, unsigned long outlen, prng_state *prng); /** Terminate a PRNG state @param prng The PRNG state to terminate @return CRYPT_OK if successful */ int (*done)(prng_state *prng); /** Export a PRNG state @param out [out] The destination for the state @param outlen [in/out] The max size and resulting size of the PRNG state @param prng The PRNG to export @return CRYPT_OK if successful */ int (*pexport)(unsigned char *out, unsigned long *outlen, prng_state *prng); /** Import a PRNG state @param in The data to import @param inlen The length of the data to import (octets) @param prng The PRNG to initialize/import @return CRYPT_OK if successful */ int (*pimport)(const unsigned char *in, unsigned long inlen, prng_state *prng); /** Self-test the PRNG @return CRYPT_OK if successful, CRYPT_NOP if self-testing has been disabled */ int (*test)(void); } prng_descriptor[]; #ifdef LTC_YARROW int yarrow_start(prng_state *prng); int yarrow_add_entropy(const unsigned char *in, unsigned long inlen, prng_state *prng); int yarrow_ready(prng_state *prng); unsigned long yarrow_read(unsigned char *out, unsigned long outlen, prng_state *prng); int yarrow_done(prng_state *prng); int yarrow_export(unsigned char *out, unsigned long *outlen, prng_state *prng); int yarrow_import(const unsigned char *in, unsigned long inlen, prng_state *prng); int yarrow_test(void); extern const struct ltc_prng_descriptor yarrow_desc; #endif #ifdef LTC_FORTUNA int fortuna_start(prng_state *prng); int fortuna_add_entropy(const unsigned char *in, unsigned long inlen, prng_state *prng); int fortuna_ready(prng_state *prng); unsigned long fortuna_read(unsigned char *out, unsigned long outlen, prng_state *prng); int fortuna_done(prng_state *prng); int fortuna_export(unsigned char *out, unsigned long *outlen, prng_state *prng); int fortuna_import(const unsigned char *in, unsigned long inlen, prng_state *prng); int fortuna_test(void); extern const struct ltc_prng_descriptor fortuna_desc; #endif #ifdef LTC_RC4 int rc4_start(prng_state *prng); int rc4_add_entropy(const unsigned char *in, unsigned long inlen, prng_state *prng); int rc4_ready(prng_state *prng); unsigned long rc4_read(unsigned char *out, unsigned long outlen, prng_state *prng); int rc4_done(prng_state *prng); int rc4_export(unsigned char *out, unsigned long *outlen, prng_state *prng); int rc4_import(const unsigned char *in, unsigned long inlen, prng_state *prng); int rc4_test(void); extern const struct ltc_prng_descriptor rc4_desc; #endif #ifdef LTC_CHACHA20_PRNG int chacha20_prng_start(prng_state *prng); int chacha20_prng_add_entropy(const unsigned char *in, unsigned long inlen, prng_state *prng); int chacha20_prng_ready(prng_state *prng); unsigned long chacha20_prng_read(unsigned char *out, unsigned long outlen, prng_state *prng); int chacha20_prng_done(prng_state *prng); int chacha20_prng_export(unsigned char *out, unsigned long *outlen, prng_state *prng); int chacha20_prng_import(const unsigned char *in, unsigned long inlen, prng_state *prng); int chacha20_prng_test(void); extern const struct ltc_prng_descriptor chacha20_prng_desc; #endif #ifdef LTC_SPRNG int sprng_start(prng_state *prng); int sprng_add_entropy(const unsigned char *in, unsigned long inlen, prng_state *prng); int sprng_ready(prng_state *prng); unsigned long sprng_read(unsigned char *out, unsigned long outlen, prng_state *prng); int sprng_done(prng_state *prng); int sprng_export(unsigned char *out, unsigned long *outlen, prng_state *prng); int sprng_import(const unsigned char *in, unsigned long inlen, prng_state *prng); int sprng_test(void); extern const struct ltc_prng_descriptor sprng_desc; #endif #ifdef LTC_SOBER128 int sober128_start(prng_state *prng); int sober128_add_entropy(const unsigned char *in, unsigned long inlen, prng_state *prng); int sober128_ready(prng_state *prng); unsigned long sober128_read(unsigned char *out, unsigned long outlen, prng_state *prng); int sober128_done(prng_state *prng); int sober128_export(unsigned char *out, unsigned long *outlen, prng_state *prng); int sober128_import(const unsigned char *in, unsigned long inlen, prng_state *prng); int sober128_test(void); extern const struct ltc_prng_descriptor sober128_desc; #endif int find_prng(const char *name); int register_prng(const struct ltc_prng_descriptor *prng); int unregister_prng(const struct ltc_prng_descriptor *prng); int register_all_prngs(void); int prng_is_valid(int idx); LTC_MUTEX_PROTO(ltc_prng_mutex) /* Slow RNG you **might** be able to use to seed a PRNG with. Be careful as this * might not work on all platforms as planned */ unsigned long rng_get_bytes(unsigned char *out, unsigned long outlen, void (*callback)(void)); int rng_make_prng(int bits, int wprng, prng_state *prng, void (*callback)(void)); #ifdef LTC_PRNG_ENABLE_LTC_RNG extern unsigned long (*ltc_rng)(unsigned char *out, unsigned long outlen, void (*callback)(void)); #endif /* ref: $Format:%D$ */ /* git commit: $Format:%H$ */ /* commit time: $Format:%ai$ */