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author | Mike Buland <eichlan@xagasoft.com> | 2012-03-25 20:00:08 +0000 |
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committer | Mike Buland <eichlan@xagasoft.com> | 2012-03-25 20:00:08 +0000 |
commit | 469bbcf0701e1eb8a6670c23145b0da87357e178 (patch) | |
tree | b5b062a16e46a6c5d3410b4e574cd0cc09057211 /src/pearsonhash.h | |
parent | ee1b79396076edc4e30aefb285fada03bb45e80d (diff) | |
download | libbu++-469bbcf0701e1eb8a6670c23145b0da87357e178.tar.gz libbu++-469bbcf0701e1eb8a6670c23145b0da87357e178.tar.bz2 libbu++-469bbcf0701e1eb8a6670c23145b0da87357e178.tar.xz libbu++-469bbcf0701e1eb8a6670c23145b0da87357e178.zip |
Code is all reorganized. We're about ready to release. I should write up a
little explenation of the arrangement.
Diffstat (limited to 'src/pearsonhash.h')
-rw-r--r-- | src/pearsonhash.h | 46 |
1 files changed, 0 insertions, 46 deletions
diff --git a/src/pearsonhash.h b/src/pearsonhash.h deleted file mode 100644 index 2a9cfa7..0000000 --- a/src/pearsonhash.h +++ /dev/null | |||
@@ -1,46 +0,0 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2007-2011 Xagasoft, All rights reserved. | ||
3 | * | ||
4 | * This file is part of the libbu++ library and is released under the | ||
5 | * terms of the license contained in the file LICENSE. | ||
6 | */ | ||
7 | |||
8 | #ifndef BU_PEARSON_HASH_H | ||
9 | #define BU_PEARSON_HASH_H | ||
10 | |||
11 | #include "bu/cryptohash.h" | ||
12 | |||
13 | namespace Bu | ||
14 | { | ||
15 | /** | ||
16 | * A pearson hash is a non-cryptographically secure hashing function that | ||
17 | * is very light on resources, very fast, and produces a single byte | ||
18 | * as it's output. It is strongly dependant on every byte in the input, | ||
19 | * which means that it's a good choice for adding to short messages to | ||
20 | * ensure that the contents of the messages are unchanged. | ||
21 | * | ||
22 | * Pearson hash is named for it's inventor Peter K. Pearson who described | ||
23 | * it in his article "Fast hashing of variable-length text strings" | ||
24 | * published in 1990 by ACM. I haven't read it, because you have to pay to | ||
25 | * get a copy :-P | ||
26 | */ | ||
27 | class PearsonHash : public Bu::CryptoHash | ||
28 | { | ||
29 | public: | ||
30 | PearsonHash(); | ||
31 | virtual ~PearsonHash(); | ||
32 | |||
33 | virtual void reset(); | ||
34 | virtual void setSalt( const Bu::String &sSalt ); | ||
35 | virtual void addData( const void *sData, int iSize ); | ||
36 | using Bu::CryptoHash::addData; | ||
37 | virtual String getResult(); | ||
38 | virtual void writeResult( Stream &sOut ); | ||
39 | |||
40 | private: | ||
41 | static uint8_t aSBox[256]; | ||
42 | uint8_t iValue; | ||
43 | }; | ||
44 | }; | ||
45 | |||
46 | #endif | ||