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/*
* PEM Encoding/Decoding
* (C) 1999-2007 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/

#ifndef BOTAN_PEM_H_
#define BOTAN_PEM_H_

#include <botan/secmem.h>
#include <string>

namespace Botan {

class DataSource;

namespace PEM_Code {

/**
* Encode some binary data in PEM format
* @param data binary data to encode
* @param data_len length of binary data in bytes
* @param label PEM label put after BEGIN and END
* @param line_width after this many characters, a new line is inserted
*/
BOTAN_PUBLIC_API(2,0) std::string encode(const uint8_t data[],
                             size_t data_len,
                             const std::string& label,
                             size_t line_width = 64);

/**
* Encode some binary data in PEM format
* @param data binary data to encode
* @param label PEM label
* @param line_width after this many characters, a new line is inserted
*/
inline std::string encode(const std::vector<uint8_t>& data,
                          const std::string& label,
                          size_t line_width = 64)
   {
   return encode(data.data(), data.size(), label, line_width);
   }

/**
* Encode some binary data in PEM format
* @param data binary data to encode
* @param label PEM label put after BEGIN and END
* @param line_width after this many characters, a new line is inserted
*/
inline std::string encode(const secure_vector<uint8_t>& data,
                          const std::string& label,
                          size_t line_width = 64)
   {
   return encode(data.data(), data.size(), label, line_width);
   }

/**
* Decode PEM data
* @param pem a datasource containing PEM encoded data
* @param label is set to the PEM label found for later inspection
*/
BOTAN_PUBLIC_API(2,0) secure_vector<uint8_t> decode(DataSource& pem,
                                     std::string& label);

/**
* Decode PEM data
* @param pem a string containing PEM encoded data
* @param label is set to the PEM label found for later inspection
*/
BOTAN_PUBLIC_API(2,0) secure_vector<uint8_t> decode(const std::string& pem,
                                     std::string& label);

/**
* Decode PEM data
* @param pem a datasource containing PEM encoded data
* @param label is what we expect the label to be
*/
BOTAN_PUBLIC_API(2,0) secure_vector<uint8_t> decode_check_label(
   DataSource& pem,
   const std::string& label);

/**
* Decode PEM data
* @param pem a string containing PEM encoded data
* @param label is what we expect the label to be
*/
BOTAN_PUBLIC_API(2,0) secure_vector<uint8_t> decode_check_label(
   const std::string& pem,
   const std::string& label);

/**
* Heuristic test for PEM data.
*/
BOTAN_PUBLIC_API(2,0) bool matches(DataSource& source,
                       const std::string& extra = "",
                       size_t search_range = 4096);

}

}

#endif