Mercurial > dropbear
annotate mycrypt_prng.h @ 0:d7da3b1e1540 libtomcrypt
put back the 0.95 makefile which was inadvertently merged over
author | Matt Johnston <matt@ucc.asn.au> |
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date | Mon, 31 May 2004 18:21:40 +0000 |
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children | 5d99163f7e32 |
rev | line source |
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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 |