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annotate mycrypt_prng.h @ 50:c61e66431001 libtomcrypt

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Merge of the normal Dropbear makefile: - Don't include mpi.o, since it does Bad Things (tm) (wrt LTM) - Don't try to make clean in tests if it doesn't exist (infinite looping makefiles, mmmmm)
author Matt Johnston <matt@ucc.asn.au>
date Sat, 07 Aug 2004 16:33:31 +0000
parents d7da3b1e1540
children 5d99163f7e32
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1 /* ---- PRNG Stuff ---- */
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2 struct yarrow_prng {
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3 int cipher, hash;
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4 unsigned char pool[MAXBLOCKSIZE];
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5 symmetric_CTR ctr;
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6 };
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7
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8 struct rc4_prng {
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9 int x, y;
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10 unsigned char buf[256];
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11 };
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12
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13 typedef union Prng_state {
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14 struct yarrow_prng yarrow;
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15 struct rc4_prng rc4;
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16 } prng_state;
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17
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18 extern struct _prng_descriptor {
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19 char *name;
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20 int (*start)(prng_state *);
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21 int (*add_entropy)(const unsigned char *, unsigned long, prng_state *);
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22 int (*ready)(prng_state *);
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23 unsigned long (*read)(unsigned char *, unsigned long len, prng_state *);
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24 } prng_descriptor[];
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25
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26 #ifdef YARROW
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27 extern int yarrow_start(prng_state *prng);
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28 extern int yarrow_add_entropy(const unsigned char *buf, unsigned long len, prng_state *prng);
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29 extern int yarrow_ready(prng_state *prng);
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30 extern unsigned long yarrow_read(unsigned char *buf, unsigned long len, prng_state *prng);
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31 extern const struct _prng_descriptor yarrow_desc;
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32 #endif
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33
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34 #ifdef RC4
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35 extern int rc4_start(prng_state *prng);
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36 extern int rc4_add_entropy(const unsigned char *buf, unsigned long len, prng_state *prng);
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37 extern int rc4_ready(prng_state *prng);
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38 extern unsigned long rc4_read(unsigned char *buf, unsigned long len, prng_state *prng);
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39 extern const struct _prng_descriptor rc4_desc;
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40 #endif
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41
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42 #ifdef SPRNG
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43 extern int sprng_start(prng_state *prng);
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44 extern int sprng_add_entropy(const unsigned char *buf, unsigned long len, prng_state *prng);
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45 extern int sprng_ready(prng_state *prng);
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46 extern unsigned long sprng_read(unsigned char *buf, unsigned long len, prng_state *prng);
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47 extern const struct _prng_descriptor sprng_desc;
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48 #endif
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49
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50 extern int find_prng(const char *name);
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51 extern int register_prng(const struct _prng_descriptor *prng);
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52 extern int unregister_prng(const struct _prng_descriptor *prng);
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53 extern int prng_is_valid(int idx);
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54
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55
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56 /* Slow RNG you **might** be able to use to seed a PRNG with. Be careful as this
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57 * might not work on all platforms as planned
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58 */
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59 /* ch2-02-1 */
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60 extern unsigned long rng_get_bytes(unsigned char *buf,
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61 unsigned long len,
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62 void (*callback)(void));
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63 /* ch2-02-1 */
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64
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65 extern int rng_make_prng(int bits, int wprng, prng_state *prng, void (*callback)(void));
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66