Mercurial > dropbear
annotate libtomcrypt/src/stream/chacha/chacha_keystream.c @ 1622:e11ed628708b
- Add adaptive authentication failure delay
- Rework monotonic_now/gettime_wrapper and use clock_gettime on more platforms
author | Matt Johnston <matt@ucc.asn.au> |
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date | Mon, 05 Nov 2018 23:36:34 +0800 |
parents | 6dba84798cd5 |
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1471
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Update to libtomcrypt 1.18.1, merged with Dropbear changes
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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 |
6dba84798cd5
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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 /* The implementation is based on: |
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11 * chacha-ref.c version 20080118 |
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12 * Public domain from D. J. Bernstein |
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13 */ |
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14 |
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15 #include "tomcrypt.h" |
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16 |
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17 #ifdef LTC_CHACHA |
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18 |
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19 /** |
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20 Generate a stream of random bytes via ChaCha |
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21 @param st The ChaCha20 state |
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22 @param out [out] The output buffer |
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23 @param outlen The output length |
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24 @return CRYPT_OK on success |
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25 */ |
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26 int chacha_keystream(chacha_state *st, unsigned char *out, unsigned long outlen) |
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27 { |
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28 if (outlen == 0) return CRYPT_OK; /* nothing to do */ |
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29 LTC_ARGCHK(out != NULL); |
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30 XMEMSET(out, 0, outlen); |
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31 return chacha_crypt(st, out, outlen, out); |
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32 } |
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33 |
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34 #endif |
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35 |
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36 /* ref: $Format:%D$ */ |
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37 /* git commit: $Format:%H$ */ |
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38 /* commit time: $Format:%ai$ */ |