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codedweller namespace to base64codec

master
Pete McNeil 3 years ago
parent
57459a5d9a
commit
38b9363df2
4 changed files with 72 additions and 77 deletions
Split View Show Diff Stats
  1. 4
    7
      base64codec.cpp
  2. 10
    12
      base64codec.hpp
  3. 54
    54
      mishmash.cpp
  4. 4
    4
      mishmash.hpp

+ 4
- 7
base64codec.cpp View File

@@ -7,7 +7,7 @@

#include "base64codec.hpp"

namespace base64codec {
namespace codedweller {

const static char base64encode[65] = // Base64 encoding characters.
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
@@ -48,10 +48,6 @@ const static unsigned char base64decode[256] = {
XXXX,XXXX,XXXX,XXXX,XXXX,XXXX,XXXX,XXXX,XXXX,XXXX,XXXX,XXXX,XXXX,XXXX,XXXX,XXXX // F
};

} // End namespace base64codec

using namespace base64codec;

//// to_base64 /////////////////////////////////////////////////////////////////

void to_base64::convert(const unsigned char* bfr, const int len) { // Converts from a char buffer.
@@ -156,7 +152,7 @@ to_base64::to_base64(const char* bfr, const int len) :
convert(reinterpret_cast<const unsigned char*>(bfr), len); // Do this to get it done.
}

to_base64::to_base64(const string& s) : // Converts from a c++ string.
to_base64::to_base64(const std::string& s) : // Converts from a c++ string.
BadConversion(true) { // No conversion yet ;-)
convert(reinterpret_cast<const unsigned char*>(s.c_str()), s.length()); // Do this to get it done.
}
@@ -260,7 +256,7 @@ from_base64::from_base64(const vector<char>& bfr) :
convert(reinterpret_cast<const unsigned char*>(&bfr[0]), bfr.size()); // This is how we do it.
}

from_base64::from_base64(const string& s) : // Converts from a c++ string.
from_base64::from_base64(const std::string& s) : // Converts from a c++ string.
BadConversion(true) { // It's bad until we've done it.
convert(reinterpret_cast<const unsigned char*>(s.c_str()), s.length()); // This is how we do it.
}
@@ -274,3 +270,4 @@ bool from_base64::Bad() {
return BadConversion;
}

} // end namespace codedweller

+ 10
- 12
base64codec.hpp View File

@@ -2,16 +2,15 @@
// Copyright (C) 2006 - 2009 MicroNeil Research Corporation
// BASE64 encoder decoder objects extending vectors

#ifndef base64codec_included
#define base64codec_included
#pragma once

#include <vector>
#include <cstring>
#include <string>

using namespace std;
namespace codedweller {

typedef vector<unsigned char> base64buffer;
typedef std::vector<unsigned char> base64buffer;

class to_base64 : public base64buffer { // Converts binary data to base 64.
private:
@@ -19,9 +18,9 @@ class to_base64 : public base64buffer {
void convert(const unsigned char* bfr, const int len); // Does the actual work.

public:
to_base64(const vector<unsigned char>& bfr); // Converts from a base64buffer.
to_base64(const vector<char>& bfr); // Converts from a buffer.
to_base64(const string& s); // Converts from a c++ string.
to_base64(const std::vector<unsigned char>& bfr); // Converts from a base64buffer.
to_base64(const std::vector<char>& bfr); // Converts from a buffer.
to_base64(const std::string& s); // Converts from a c++ string.
to_base64(const char* s); // Converts from a c string.
to_base64(const unsigned char* bfr, const int len); // Converts from a uchar buffer.
to_base64(const char* bfr, const int len); // Converts from a char buffer.
@@ -38,12 +37,11 @@ class from_base64 : public base64buffer {
void convert(const unsigned char* bfr, const int len); // Does the actual work.

public:
from_base64(const vector<unsigned char>& bfr); // Converts from a base64buffer.
from_base64(const vector<char>& bfr); // Converts from a buffer.
from_base64(const string& s); // Converts from a c++ string.
from_base64(const std::vector<unsigned char>& bfr); // Converts from a base64buffer.
from_base64(const std::vector<char>& bfr); // Converts from a buffer.
from_base64(const std::string& s); // Converts from a c++ string.
from_base64(const char*); // Converts from a c_string.
bool Bad(); // True if conversion wasn't complete.
};


#endif
}

+ 54
- 54
mishmash.cpp View File

@@ -5,67 +5,67 @@

namespace codedweller {

uint32_t primes[256] {
1019, 1021, 1031, 1033, 1039, 1049, 1051, 1061,
1063, 1069, 1087, 1091, 1093, 1097, 1103, 1109,
1117, 1123, 1129, 1151, 1153, 1163, 1171, 1181,
1187, 1193, 1201, 1213, 1217, 1223, 1229, 1231,
1237, 1249, 1259, 1277, 1279, 1283, 1289, 1291,
1297, 1301, 1303, 1307, 1319, 1321, 1327, 1361,
1367, 1373, 1381, 1399, 1409, 1423, 1427, 1429,
1433, 1439, 1447, 1451, 1453, 1459, 1471, 1481,
uint32_t primes[256] {
1019, 1021, 1031, 1033, 1039, 1049, 1051, 1061,
1063, 1069, 1087, 1091, 1093, 1097, 1103, 1109,
1117, 1123, 1129, 1151, 1153, 1163, 1171, 1181,
1187, 1193, 1201, 1213, 1217, 1223, 1229, 1231,
1237, 1249, 1259, 1277, 1279, 1283, 1289, 1291,
1297, 1301, 1303, 1307, 1319, 1321, 1327, 1361,
1367, 1373, 1381, 1399, 1409, 1423, 1427, 1429,
1433, 1439, 1447, 1451, 1453, 1459, 1471, 1481,

1483, 1487, 1489, 1493, 1499, 1511, 1523, 1531,
1543, 1549, 1553, 1559, 1567, 1571, 1579, 1583,
1597, 1601, 1607, 1609, 1613, 1619, 1621, 1627,
1637, 1657, 1663, 1667, 1669, 1693, 1697, 1699,
1709, 1721, 1723, 1733, 1741, 1747, 1753, 1759,
1777, 1783, 1787, 1789, 1801, 1811, 1823, 1831,
1847, 1861, 1867, 1871, 1873, 1877, 1879, 1889,
1901, 1907, 1913, 1931, 1933, 1949, 1951, 1973,
1483, 1487, 1489, 1493, 1499, 1511, 1523, 1531,
1543, 1549, 1553, 1559, 1567, 1571, 1579, 1583,
1597, 1601, 1607, 1609, 1613, 1619, 1621, 1627,
1637, 1657, 1663, 1667, 1669, 1693, 1697, 1699,
1709, 1721, 1723, 1733, 1741, 1747, 1753, 1759,
1777, 1783, 1787, 1789, 1801, 1811, 1823, 1831,
1847, 1861, 1867, 1871, 1873, 1877, 1879, 1889,
1901, 1907, 1913, 1931, 1933, 1949, 1951, 1973,

1979, 1987, 1993, 1997, 1999, 2003, 2011, 2017,
2027, 2029, 2039, 2053, 2063, 2069, 2081, 2083,
2087, 2089, 2099, 2111, 2113, 2129, 2131, 2137,
2141, 2143, 2153, 2161, 2179, 2203, 2207, 2213,
2221, 2237, 2239, 2243, 2251, 2267, 2269, 2273,
2281, 2287, 2293, 2297, 2309, 2311, 2333, 2339,
2341, 2347, 2351, 2357, 2371, 2377, 2381, 2383,
2389, 2393, 2399, 2411, 2417, 2423, 2437, 2441,
2447, 2459, 2467, 2473, 2477, 2503, 2521, 2531,
2539, 2543, 2549, 2551, 2557, 2579, 2591, 2593,
2609, 2617, 2621, 2633, 2647, 2657, 2659, 2663,
2671, 2677, 2683, 2687, 2689, 2693, 2699, 2707,
2711, 2713, 2719, 2729, 2731, 2741, 2749, 2753,
2767, 2777, 2789, 2791, 2797, 2801, 2803, 2819,
2833, 2837, 2843, 2851, 2857, 2861, 2879, 2887,
2897, 2903, 2909, 2917, 2927, 2939, 2953, 2957
};
1979, 1987, 1993, 1997, 1999, 2003, 2011, 2017,
2027, 2029, 2039, 2053, 2063, 2069, 2081, 2083,
2087, 2089, 2099, 2111, 2113, 2129, 2131, 2137,
2141, 2143, 2153, 2161, 2179, 2203, 2207, 2213,
2221, 2237, 2239, 2243, 2251, 2267, 2269, 2273,
2281, 2287, 2293, 2297, 2309, 2311, 2333, 2339,
2341, 2347, 2351, 2357, 2371, 2377, 2381, 2383,
2389, 2393, 2399, 2411, 2417, 2423, 2437, 2441,
2447, 2459, 2467, 2473, 2477, 2503, 2521, 2531,
2539, 2543, 2549, 2551, 2557, 2579, 2591, 2593,
2609, 2617, 2621, 2633, 2647, 2657, 2659, 2663,
2671, 2677, 2683, 2687, 2689, 2693, 2699, 2707,
2711, 2713, 2719, 2729, 2731, 2741, 2749, 2753,
2767, 2777, 2789, 2791, 2797, 2801, 2803, 2819,
2833, 2837, 2843, 2851, 2857, 2861, 2879, 2887,
2897, 2903, 2909, 2917, 2927, 2939, 2953, 2957
};


inline size_t mod256(size_t n) noexcept { return (n & 0xff); }
inline uint32_t selectedPrime(size_t n) noexcept { return primes[mod256(n)]; }
inline size_t mod256(size_t n) noexcept { return (n & 0xff); }

uint32_t mishmash(const unsigned char* buffer, size_t length) noexcept {
uint64_t accumulator = selectedPrime(length);
for(size_t index = 0; index < length; index++) {
unsigned char byte = buffer[index];
accumulator += selectedPrime(index + accumulator);
accumulator *= selectedPrime(byte + accumulator);
accumulator += accumulator >> 32;
accumulator &= 0x00000fffffffffff;
}
return accumulator & 0x00000000ffffffff;
}
inline uint32_t selectedPrime(size_t n) noexcept { return primes[mod256(n)]; }

uint32_t mishmash(const std::string& s) noexcept {
return mishmash((const unsigned char*) s.c_str(), s.length());
uint32_t mishmash(const unsigned char* buffer, size_t length) noexcept {
uint64_t accumulator = selectedPrime(length);
for(size_t index = 0; index < length; index++) {
unsigned char byte = buffer[index];
accumulator += selectedPrime(index + accumulator);
accumulator *= selectedPrime(byte + accumulator);
accumulator += accumulator >> 32;
accumulator &= 0x00000fffffffffff;
}
return accumulator & 0x00000000ffffffff;
}

uint32_t mishmash(const std::vector<unsigned char>& v) noexcept {
return mishmash(v.data(), v.size());
}
uint32_t mishmash(const std::string& s) noexcept {
return mishmash((const unsigned char*) s.c_str(), s.length());
}

uint32_t mishmash(const std::vector<unsigned char>& v) noexcept {
return mishmash(v.data(), v.size());
}

}

+ 4
- 4
mishmash.hpp View File

@@ -7,8 +7,8 @@

namespace codedweller {

uint32_t mishmash(const unsigned char* buffer, size_t length) noexcept;
uint32_t mishmash(const std::string &s) noexcept;
uint32_t mishmash(const std::vector<unsigned char>& v) noexcept;
uint32_t mishmash(const unsigned char* buffer, size_t length) noexcept;
uint32_t mishmash(const std::string &s) noexcept;
uint32_t mishmash(const std::vector<unsigned char>& v) noexcept;

}
} // End namespace codedweller

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