/usr/include/botan-1.10/botan/hex_filt.h is in libbotan1.10-dev 1.10.16-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Hex Encoder/Decoder
* (C) 1999-2010 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_HEX_FILTER_H__
#define BOTAN_HEX_FILTER_H__
#include <botan/filter.h>
namespace Botan {
/**
* Converts arbitrary binary data to hex strings, optionally with
* newlines inserted
*/
class BOTAN_DLL Hex_Encoder : public Filter
{
public:
/**
* Whether to use uppercase or lowercase letters for the encoded string.
*/
enum Case { Uppercase, Lowercase };
std::string name() const { return "Hex_Encoder"; }
void write(const byte in[], size_t length);
void end_msg();
/**
* Create a hex encoder.
* @param the_case the case to use in the encoded strings.
*/
Hex_Encoder(Case the_case);
/**
* Create a hex encoder.
* @param newlines should newlines be used
* @param line_length if newlines are used, how long are lines
* @param the_case the case to use in the encoded strings
*/
Hex_Encoder(bool newlines = false,
size_t line_length = 72,
Case the_case = Uppercase);
private:
void encode_and_send(const byte[], size_t);
const Case casing;
const size_t line_length;
MemoryVector<byte> in, out;
size_t position, counter;
};
/**
* Converts hex strings to bytes
*/
class BOTAN_DLL Hex_Decoder : public Filter
{
public:
std::string name() const { return "Hex_Decoder"; }
void write(const byte[], size_t);
void end_msg();
/**
* Construct a Hex Decoder using the specified
* character checking.
* @param checking the checking to use during decoding.
*/
Hex_Decoder(Decoder_Checking checking = NONE);
private:
const Decoder_Checking checking;
MemoryVector<byte> in, out;
size_t position;
};
}
#endif
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