Initial revision

1 files changed, 40 insertions, 0 deletions

diff --git a/base64.cpp b/base64.cpp
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index 00000000..0cc48b96
--- /dev/null
+++ b/base64.cpp
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+// base64.cpp - written and placed in the public domain by Wei Dai
+
+#include "pch.h"
+#include "base64.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+static const byte s_vec[] =
+		"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+static const byte s_padding = '=';
+
+void Base64Encoder::IsolatedInitialize(const NameValuePairs &parameters)
+{
+	bool insertLineBreaks = parameters.GetValueWithDefault("InsertLineBreaks", true);
+	int maxLineLength = parameters.GetIntValueWithDefault("MaxLineLength", 72);
+	
+	m_filter->Initialize(CombinedNameValuePairs(
+		parameters,
+		MakeParameters("EncodingLookupArray", (const byte *)s_vec)
+			("PaddingByte", s_padding)
+			("Log2Base", 6)
+			("GroupSize", insertLineBreaks ? maxLineLength : 0)
+			("Seperator", ConstByteArrayParameter("\n"))
+			("Terminator", ConstByteArrayParameter("\n"))));
+}
+
+const int *Base64Decoder::GetDecodingLookupArray()
+{
+	static bool s_initialized = false;
+	static int s_array[256];
+
+	if (!s_initialized)
+	{
+		InitializeDecodingLookupArray(s_array, s_vec, 64, false);
+		s_initialized = true;
+	}
+	return s_array;
+}
+
+NAMESPACE_END