Security Scol plugin
hex.cpp
1// hex.cpp - originally written and placed in the public domain by Wei Dai
2
3#include "pch.h"
4
5#ifndef CRYPTOPP_IMPORTS
6
7#include "hex.h"
8
9NAMESPACE_BEGIN(CryptoPP)
10ANONYMOUS_NAMESPACE_BEGIN
11
12const byte s_vecUpper[] = "0123456789ABCDEF";
13const byte s_vecLower[] = "0123456789abcdef";
14const int s_array[256] = {
15 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
16 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
17 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
18 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1, -1, -1, -1,
19 -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1,
20 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
21 -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1,
22 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
23 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
24 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
25 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
26 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
27 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
28 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
29 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
30 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
31};
32
33ANONYMOUS_NAMESPACE_END
34
35void HexEncoder::IsolatedInitialize(const NameValuePairs &parameters)
36{
37 bool uppercase = parameters.GetValueWithDefault(Name::Uppercase(), true);
38 m_filter->Initialize(CombinedNameValuePairs(
39 parameters,
40 MakeParameters(Name::EncodingLookupArray(), uppercase ? &s_vecUpper[0] : &s_vecLower[0], false)(Name::Log2Base(), 4, true)));
41}
42
43void HexDecoder::IsolatedInitialize(const NameValuePairs &parameters)
44{
45 BaseN_Decoder::IsolatedInitialize(CombinedNameValuePairs(
46 parameters,
47 MakeParameters(Name::DecodingLookupArray(), GetDefaultDecodingLookupArray(), false)(Name::Log2Base(), 4, true)));
48}
49
50// Unrolled initialization, http://github.com/weidai11/cryptopp/issues/376
51const int *HexDecoder::GetDefaultDecodingLookupArray()
52{
53 return s_array;
54}
55
56NAMESPACE_END
57
58#endif // CRYPTOPP_IMPORTS
MakeParameters
AlgorithmParameters MakeParameters(const char *name, const T &value, bool throwIfNotUsed=true)
Create an object that implements NameValuePairs.
Definition algparam.h:508
BaseN_Decoder::IsolatedInitialize
void IsolatedInitialize(const NameValuePairs &parameters)
Initialize or reinitialize this object, without signal propagation.
Definition basecode.cpp:115
BufferedTransformation::Initialize
virtual void Initialize(const NameValuePairs &parameters=g_nullNameValuePairs, int propagation=-1)
Initialize or reinitialize this object, with signal propagation.
Definition cryptlib.cpp:434
CombinedNameValuePairs
Combines two sets of NameValuePairs.
Definition algparam.h:129
HexDecoder::IsolatedInitialize
void IsolatedInitialize(const NameValuePairs &parameters)
Initialize or reinitialize this object, without signal propagation.
Definition hex.cpp:43
HexEncoder::IsolatedInitialize
void IsolatedInitialize(const NameValuePairs &parameters)
Initialize or reinitialize this object, without signal propagation.
Definition hex.cpp:35
NameValuePairs
Interface for retrieving values given their names.
Definition cryptlib.h:322
NameValuePairs::GetValueWithDefault
T GetValueWithDefault(const char *name, T defaultValue) const
Get a named value.
Definition cryptlib.h:392
hex.h
Classes for HexEncoder and HexDecoder.
pch.h
Precompiled header file.
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