From 656db5504c8c656d3981fed232da44b2f28b1feb Mon Sep 17 00:00:00 2001 From: weidai Date: Fri, 18 Jul 2003 04:34:12 +0000 Subject: add base 32 (Frank Palazzolo) git-svn-id: svn://svn.code.sf.net/p/cryptopp/code/trunk/c5@102 57ff6487-cd31-0410-9ec3-f628ee90f5f0 --- base32.cpp | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 base32.cpp (limited to 'base32.cpp') diff --git a/base32.cpp b/base32.cpp new file mode 100644 index 0000000..56bce6e --- /dev/null +++ b/base32.cpp @@ -0,0 +1,39 @@ +// base32.cpp - written and placed in the public domain by Frank Palazzolo, based on hex.cpp by Wei Dai + +#include "pch.h" +#include "base32.h" + +NAMESPACE_BEGIN(CryptoPP) + +static const byte s_vecUpper[] = "ABCDEFGHIJKMNPQRSTUVWXYZ23456789"; +static const byte s_vecLower[] = "abcdefghijkmnpqrstuvwxyz23456789"; + +void Base32Encoder::IsolatedInitialize(const NameValuePairs ¶meters) +{ + bool uppercase = parameters.GetValueWithDefault(Name::Uppercase(), true); + m_filter->Initialize(CombinedNameValuePairs( + parameters, + MakeParameters(Name::EncodingLookupArray(), uppercase ? &s_vecUpper[0] : &s_vecLower[0], false)(Name::Log2Base(), 5, true))); +} + +void Base32Decoder::IsolatedInitialize(const NameValuePairs ¶meters) +{ + BaseN_Decoder::Initialize(CombinedNameValuePairs( + parameters, + MakeParameters(Name::DecodingLookupArray(), GetDefaultDecodingLookupArray(), false)(Name::Log2Base(), 5, true))); +} + +const int *Base32Decoder::GetDefaultDecodingLookupArray() +{ + static bool s_initialized = false; + static int s_array[256]; + + if (!s_initialized) + { + InitializeDecodingLookupArray(s_array, s_vecUpper, 32, true); + s_initialized = true; + } + return s_array; +} + +NAMESPACE_END -- cgit v1.2.1