Remove cryptoppwin submodule (#754)

third_party/cryptoppwin/include/cryptopp/base64.h

@@ -0,0 +1,158 @@
+// base64.h - originally written and placed in the public domain by Wei Dai
+
+/// \file base64.h
+/// \brief Classes for the Base64Encoder, Base64Decoder, Base64URLEncoder and Base64URLDecoder
+
+#ifndef CRYPTOPP_BASE64_H
+#define CRYPTOPP_BASE64_H
+
+#include "cryptlib.h"
+#include "basecode.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+/// \brief Base64 encodes data using DUDE
+/// \details Base64 encodes data per <A HREF="http://tools.ietf.org/html/rfc4648#section-4">RFC 4648, Base 64 Encoding</A>.
+class Base64Encoder : public SimpleProxyFilter
+{
+public:
+	/// \brief Construct a Base64Encoder
+	/// \param attachment a BufferedTrasformation to attach to this object
+	/// \param insertLineBreaks a BufferedTrasformation to attach to this object
+	/// \param maxLineLength the length of a line if line breaks are used
+	/// \details Base64Encoder constructs a default encoder. The constructor lacks a parameter for padding, and you must
+	///   use IsolatedInitialize() to modify the Base64Encoder after construction.
+	/// \sa IsolatedInitialize() for an example of modifying an encoder after construction.
+	Base64Encoder(BufferedTransformation *attachment = NULLPTR, bool insertLineBreaks = true, int maxLineLength = 72)
+		: SimpleProxyFilter(new BaseN_Encoder(new Grouper), attachment)
+	{
+		IsolatedInitialize(MakeParameters(Name::InsertLineBreaks(), insertLineBreaks)(Name::MaxLineLength(), maxLineLength));
+	}
+
+	/// \brief Initialize or reinitialize this object, without signal propagation
+	/// \param parameters a set of NameValuePairs used to initialize this object
+	/// \details IsolatedInitialize() is used to initialize or reinitialize an object using a variable
+	///   number of arbitrarily typed arguments. IsolatedInitialize() does not call Initialize() on attached
+	///   transformations. If initialization should be propagated, then use the Initialize() function.
+	/// \details The following code modifies the padding and line break parameters for an encoder:
+	///   <pre>
+	///     Base64Encoder encoder;
+	///     AlgorithmParameters params = MakeParameters(Pad(), false)(InsertLineBreaks(), false);
+	///     encoder.IsolatedInitialize(params);</pre>
+	/// \details You can change the encoding to RFC 4648 web safe alphabet by performing the following:
+	///   <pre>
+	///     Base64Encoder encoder;
+	///     const byte ALPHABET[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";
+	///     AlgorithmParameters params = MakeParameters(Name::EncodingLookupArray(),(const byte *)ALPHABET);
+	///     encoder.IsolatedInitialize(params);</pre>
+	/// \details If you change the encoding alphabet, then you will need to change the decoding alphabet \a and
+	///   the decoder's lookup table.
+	/// \sa Base64URLEncoder for an encoder that provides the web safe alphabet, and Base64Decoder::IsolatedInitialize()
+	///   for an example of modifying a decoder's lookup table after construction.
+	void IsolatedInitialize(const NameValuePairs &parameters);
+};
+
+/// \brief Base64 decodes data using DUDE
+/// \details Base64 encodes data per <A HREF="http://tools.ietf.org/html/rfc4648#section-4">RFC 4648, Base 64 Encoding</A>.
+class Base64Decoder : public BaseN_Decoder
+{
+public:
+	/// \brief Construct a Base64Decoder
+	/// \param attachment a BufferedTrasformation to attach to this object
+	/// \sa IsolatedInitialize() for an example of modifying an encoder after construction.
+	Base64Decoder(BufferedTransformation *attachment = NULLPTR)
+		: BaseN_Decoder(GetDecodingLookupArray(), 6, attachment) {}
+
+	/// \brief Initialize or reinitialize this object, without signal propagation
+	/// \param parameters a set of NameValuePairs used to initialize this object
+	/// \details IsolatedInitialize() is used to initialize or reinitialize an object using a variable
+	///   number of arbitrarily typed arguments. IsolatedInitialize() does not call Initialize() on attached
+	///   transformations. If initialization should be propagated, then use the Initialize() function.
+	/// \details The default decoding alpahbet is RFC 4868. You can change the to RFC 4868 web safe alphabet
+	///   by performing the following:
+	///   <pre>
+	///     int lookup[256];
+	///     const byte ALPHABET[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";
+	///     Base64Decoder::InitializeDecodingLookupArray(lookup, ALPHABET, 64, false);
+	///
+	///     Base64Decoder decoder;
+	///     AlgorithmParameters params = MakeParameters(Name::DecodingLookupArray(),(const int *)lookup);
+	///     decoder.IsolatedInitialize(params);</pre>
+	/// \sa Base64URLDecoder for a decoder that provides the web safe alphabet, and Base64Encoder::IsolatedInitialize()
+	///   for an example of modifying an encoder's alphabet after construction.
+	void IsolatedInitialize(const NameValuePairs &parameters);
+
+private:
+	/// \brief Provides the default decoding lookup table
+	/// \return default decoding lookup table
+	static const int * CRYPTOPP_API GetDecodingLookupArray();
+};
+
+/// \brief Base64 encodes data using a web safe alphabet
+/// \details Base64 encodes data per <A HREF="http://tools.ietf.org/html/rfc4648#section-5">RFC 4648, Base 64 Encoding
+///   with URL and Filename Safe Alphabet</A>.
+class Base64URLEncoder : public SimpleProxyFilter
+{
+public:
+	/// \brief Construct a Base64URLEncoder
+	/// \param attachment a BufferedTrasformation to attach to this object
+	/// \param insertLineBreaks a BufferedTrasformation to attach to this object
+	/// \param maxLineLength the length of a line if line breaks are used
+	/// \details Base64URLEncoder() constructs a default encoder using a web safe alphabet. The constructor ignores
+	///   insertLineBreaks and maxLineLength because the web and URL safe specifications don't use them. They are
+	///   present in the constructor for API compatibility with Base64Encoder so it is a drop-in replacement. The
+	///   constructor also disables padding on the encoder for the same reason.
+	/// \details If you need line breaks or padding, then you must use IsolatedInitialize() to set them
+	///   after constructing a Base64URLEncoder.
+	/// \sa Base64Encoder for an encoder that provides a classic alphabet, and Base64URLEncoder::IsolatedInitialize
+	///   for an example of modifying an encoder after construction.
+	Base64URLEncoder(BufferedTransformation *attachment = NULLPTR, bool insertLineBreaks = false, int maxLineLength = -1)
+		: SimpleProxyFilter(new BaseN_Encoder(new Grouper), attachment)
+	{
+		CRYPTOPP_UNUSED(insertLineBreaks), CRYPTOPP_UNUSED(maxLineLength);
+		IsolatedInitialize(MakeParameters(Name::InsertLineBreaks(), false)(Name::MaxLineLength(), -1)(Name::Pad(),false));
+	}
+
+	/// \details IsolatedInitialize() is used to initialize or reinitialize an object using a variable
+	///   number of arbitrarily typed arguments. IsolatedInitialize() does not call Initialize() on attached
+	///   transformations. If initialization should be propagated, then use the Initialize() function.
+	/// \details The following code modifies the padding and line break parameters for an encoder:
+	///   <pre>
+	///     Base64URLEncoder encoder;
+	///     AlgorithmParameters params = MakeParameters(Name::Pad(), true)(Name::InsertLineBreaks(), true);
+	///     encoder.IsolatedInitialize(params);</pre>
+	/// \sa Base64Encoder for an encoder that provides a classic alphabet.
+	void IsolatedInitialize(const NameValuePairs &parameters);
+};
+
+/// \brief Base64 decodes data using a web safe alphabet
+/// \details Base64 encodes data per <A HREF="http://tools.ietf.org/html/rfc4648#section-5">RFC 4648, Base 64 Encoding
+///   with URL and Filename Safe Alphabet</A>.
+class Base64URLDecoder : public BaseN_Decoder
+{
+public:
+	/// \brief Construct a Base64URLDecoder
+	/// \param attachment a BufferedTrasformation to attach to this object
+	/// \details Base64URLDecoder() constructs a default decoder using a web safe alphabet.
+	/// \sa Base64Decoder for a decoder that provides a classic alphabet.
+	Base64URLDecoder(BufferedTransformation *attachment = NULLPTR)
+		: BaseN_Decoder(GetDecodingLookupArray(), 6, attachment) {}
+
+	/// \brief Initialize or reinitialize this object, without signal propagation
+	/// \param parameters a set of NameValuePairs used to initialize this object
+	/// \details IsolatedInitialize() is used to initialize or reinitialize an object using a variable
+	///   number of arbitrarily typed arguments. IsolatedInitialize() does not call Initialize() on
+	///  attached transformations. If initialization should be propagated, then use the Initialize() function.
+	/// \sa Base64Decoder for a decoder that provides a classic alphabet, and Base64URLEncoder::IsolatedInitialize
+	///   for an example of modifying an encoder after construction.
+	void IsolatedInitialize(const NameValuePairs &parameters);
+
+private:
+	/// \brief Provides the default decoding lookup table
+	/// \return default decoding lookup table
+	static const int * CRYPTOPP_API GetDecodingLookupArray();
+};
+
+NAMESPACE_END
+
+#endif