Mercurial > dropbear

annotate libtomcrypt/src/headers/tomcrypt_prng.h @ 1861:2b3a8026a6ce

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Add re-exec for server This allows ASLR to re-randomize the address space for every connection, preventing some vulnerabilities from being exploitable by repeated probing. Overhead (memory and time) is yet to be confirmed. At present this is only enabled on Linux. Other BSD platforms with fexecve() would probably also work though have not been tested.
author Matt Johnston <matt@ucc.asn.au>
date Sun, 30 Jan 2022 10:14:56 +0800
parents 6dba84798cd5
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
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2 *
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3 * LibTomCrypt is a library that provides various cryptographic
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4 * algorithms in a highly modular and flexible manner.
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5 *
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6 * The library is free for all purposes without any express
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7 * guarantee it works.
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8 */
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9
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10 /* ---- PRNG Stuff ---- */
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11 #ifdef LTC_YARROW
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12 struct yarrow_prng {
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13 int cipher, hash;
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14 unsigned char pool[MAXBLOCKSIZE];
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15 symmetric_CTR ctr;
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16 };
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17 #endif
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18
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19 #ifdef LTC_RC4
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20 struct rc4_prng {
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21 rc4_state s;
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22 };
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23 #endif
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24
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25 #ifdef LTC_CHACHA20_PRNG
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26 struct chacha20_prng {
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27 chacha_state s; /* chacha state */
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28 unsigned char ent[40]; /* entropy buffer */
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29 unsigned long idx; /* entropy counter */
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30 };
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31 #endif
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32
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33 #ifdef LTC_FORTUNA
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34 struct fortuna_prng {
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35 hash_state pool[LTC_FORTUNA_POOLS]; /* the pools */
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37 symmetric_key skey;
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38
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39 unsigned char K[32], /* the current key */
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40 IV[16]; /* IV for CTR mode */
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41
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42 unsigned long pool_idx, /* current pool we will add to */
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43 pool0_len, /* length of 0'th pool */
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44 wd;
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45
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46 ulong64 reset_cnt; /* number of times we have reset */
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47 };
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48 #endif
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49
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50 #ifdef LTC_SOBER128
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51 struct sober128_prng {
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52 sober128_state s; /* sober128 state */
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53 unsigned char ent[40]; /* entropy buffer */
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54 unsigned long idx; /* entropy counter */
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55 };
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56 #endif
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57
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58 typedef struct {
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59 union {
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60 char dummy[1];
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61 #ifdef LTC_YARROW
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62 struct yarrow_prng yarrow;
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63 #endif
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64 #ifdef LTC_RC4
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65 struct rc4_prng rc4;
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66 #endif
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67 #ifdef LTC_CHACHA20_PRNG
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68 struct chacha20_prng chacha;
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69 #endif
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70 #ifdef LTC_FORTUNA
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71 struct fortuna_prng fortuna;
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72 #endif
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73 #ifdef LTC_SOBER128
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74 struct sober128_prng sober128;
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75 #endif
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76 };
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77 short ready; /* ready flag 0-1 */
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78 LTC_MUTEX_TYPE(lock) /* lock */
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79 } prng_state;
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80
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81 /** PRNG descriptor */
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82 extern struct ltc_prng_descriptor {
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83 /** Name of the PRNG */
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84 const char *name;
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85 /** size in bytes of exported state */
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86 int export_size;
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87 /** Start a PRNG state
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88 @param prng [out] The state to initialize
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89 @return CRYPT_OK if successful
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90 */
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91 int (*start)(prng_state *prng);
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92 /** Add entropy to the PRNG
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93 @param in The entropy
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94 @param inlen Length of the entropy (octets)\
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95 @param prng The PRNG state
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96 @return CRYPT_OK if successful
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97 */
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98 int (*add_entropy)(const unsigned char *in, unsigned long inlen, prng_state *prng);
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99 /** Ready a PRNG state to read from
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100 @param prng The PRNG state to ready
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101 @return CRYPT_OK if successful
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102 */
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103 int (*ready)(prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
104 /** Read from the PRNG
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
105 @param out [out] Where to store the data
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
106 @param outlen Length of data desired (octets)
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
107 @param prng The PRNG state to read from
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
108 @return Number of octets read
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
109 */
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
110 unsigned long (*read)(unsigned char *out, unsigned long outlen, prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
111 /** Terminate a PRNG state
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
112 @param prng The PRNG state to terminate
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
113 @return CRYPT_OK if successful
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
114 */
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
115 int (*done)(prng_state *prng);
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116 /** Export a PRNG state
285
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
117 @param out [out] The destination for the state
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
118 @param outlen [in/out] The max size and resulting size of the PRNG state
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
119 @param prng The PRNG to export
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
120 @return CRYPT_OK if successful
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
121 */
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
122 int (*pexport)(unsigned char *out, unsigned long *outlen, prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
123 /** Import a PRNG state
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
124 @param in The data to import
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
125 @param inlen The length of the data to import (octets)
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
126 @param prng The PRNG to initialize/import
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
127 @return CRYPT_OK if successful
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
128 */
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
129 int (*pimport)(const unsigned char *in, unsigned long inlen, prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
130 /** Self-test the PRNG
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
131 @return CRYPT_OK if successful, CRYPT_NOP if self-testing has been disabled
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
132 */
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
133 int (*test)(void);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
134 } prng_descriptor[];
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
135
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diff changeset
136 #ifdef LTC_YARROW
285
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
137 int yarrow_start(prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
138 int yarrow_add_entropy(const unsigned char *in, unsigned long inlen, prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
139 int yarrow_ready(prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
140 unsigned long yarrow_read(unsigned char *out, unsigned long outlen, prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
141 int yarrow_done(prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
142 int yarrow_export(unsigned char *out, unsigned long *outlen, prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
143 int yarrow_import(const unsigned char *in, unsigned long inlen, prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
144 int yarrow_test(void);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
145 extern const struct ltc_prng_descriptor yarrow_desc;
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
146 #endif
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
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diff changeset
147
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Matt Johnston <matt@ucc.asn.au>
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diff changeset
148 #ifdef LTC_FORTUNA
285
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
149 int fortuna_start(prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
150 int fortuna_add_entropy(const unsigned char *in, unsigned long inlen, prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
151 int fortuna_ready(prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
152 unsigned long fortuna_read(unsigned char *out, unsigned long outlen, prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
153 int fortuna_done(prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
154 int fortuna_export(unsigned char *out, unsigned long *outlen, prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
155 int fortuna_import(const unsigned char *in, unsigned long inlen, prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
156 int fortuna_test(void);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
157 extern const struct ltc_prng_descriptor fortuna_desc;
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
158 #endif
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
159
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Matt Johnston <matt@ucc.asn.au>
parents: 382
diff changeset
160 #ifdef LTC_RC4
285
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
161 int rc4_start(prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
162 int rc4_add_entropy(const unsigned char *in, unsigned long inlen, prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
163 int rc4_ready(prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
164 unsigned long rc4_read(unsigned char *out, unsigned long outlen, prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
165 int rc4_done(prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
166 int rc4_export(unsigned char *out, unsigned long *outlen, prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
167 int rc4_import(const unsigned char *in, unsigned long inlen, prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
168 int rc4_test(void);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
169 extern const struct ltc_prng_descriptor rc4_desc;
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
170 #endif
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
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diff changeset
171
1471
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Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
172 #ifdef LTC_CHACHA20_PRNG
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
173 int chacha20_prng_start(prng_state *prng);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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parents: 1435
diff changeset
174 int chacha20_prng_add_entropy(const unsigned char *in, unsigned long inlen, prng_state *prng);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
175 int chacha20_prng_ready(prng_state *prng);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
176 unsigned long chacha20_prng_read(unsigned char *out, unsigned long outlen, prng_state *prng);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
177 int chacha20_prng_done(prng_state *prng);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
178 int chacha20_prng_export(unsigned char *out, unsigned long *outlen, prng_state *prng);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
179 int chacha20_prng_import(const unsigned char *in, unsigned long inlen, prng_state *prng);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
180 int chacha20_prng_test(void);
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
181 extern const struct ltc_prng_descriptor chacha20_prng_desc;
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
182 #endif
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents: 1435
diff changeset
183
1435
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Matt Johnston <matt@ucc.asn.au>
parents: 382
diff changeset
184 #ifdef LTC_SPRNG
285
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
185 int sprng_start(prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
186 int sprng_add_entropy(const unsigned char *in, unsigned long inlen, prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
187 int sprng_ready(prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
188 unsigned long sprng_read(unsigned char *out, unsigned long outlen, prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
189 int sprng_done(prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
190 int sprng_export(unsigned char *out, unsigned long *outlen, prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
191 int sprng_import(const unsigned char *in, unsigned long inlen, prng_state *prng);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
192 int sprng_test(void);
1b9e69c058d2 propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
Matt Johnston <matt@ucc.asn.au>
parents:
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193 extern const struct ltc_prng_descriptor sprng_desc;
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194 #endif
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195
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196 #ifdef LTC_SOBER128
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197 int sober128_start(prng_state *prng);
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198 int sober128_add_entropy(const unsigned char *in, unsigned long inlen, prng_state *prng);
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199 int sober128_ready(prng_state *prng);
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200 unsigned long sober128_read(unsigned char *out, unsigned long outlen, prng_state *prng);
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201 int sober128_done(prng_state *prng);
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202 int sober128_export(unsigned char *out, unsigned long *outlen, prng_state *prng);
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203 int sober128_import(const unsigned char *in, unsigned long inlen, prng_state *prng);
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204 int sober128_test(void);
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205 extern const struct ltc_prng_descriptor sober128_desc;
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206 #endif
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207
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208 int find_prng(const char *name);
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209 int register_prng(const struct ltc_prng_descriptor *prng);
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210 int unregister_prng(const struct ltc_prng_descriptor *prng);
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211 int register_all_prngs(void);
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212 int prng_is_valid(int idx);
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213 LTC_MUTEX_PROTO(ltc_prng_mutex)
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214
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215 /* Slow RNG you **might** be able to use to seed a PRNG with. Be careful as this
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216 * might not work on all platforms as planned
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217 */
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218 unsigned long rng_get_bytes(unsigned char *out,
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219 unsigned long outlen,
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220 void (*callback)(void));
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221
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222 int rng_make_prng(int bits, int wprng, prng_state *prng, void (*callback)(void));
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223
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224 #ifdef LTC_PRNG_ENABLE_LTC_RNG
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225 extern unsigned long (*ltc_rng)(unsigned char *out, unsigned long outlen,
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226 void (*callback)(void));
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227 #endif
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228
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229
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230 /* ref: $Format:%D$ */
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231 /* git commit: $Format:%H$ */
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232 /* commit time: $Format:%ai$ */