This file is indexed.

/usr/include/botan-1.10/botan/mode_pad.h is in libbotan1.10-dev 1.10.0-3.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
/*
* CBC Padding Methods
* (C) 1999-2008 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/

#ifndef BOTAN_CBC_PADDING_H__
#define BOTAN_CBC_PADDING_H__

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

namespace Botan {

/**
* Block Cipher Mode Padding Method
* This class is pretty limited, it cannot deal well with
* randomized padding methods, or any padding method that
* wants to add more than one block. For instance, it should
* be possible to define cipher text stealing mode as simply
* a padding mode for CBC, which happens to consume the last
* two block (and requires use of the block cipher).
*/
class BOTAN_DLL BlockCipherModePaddingMethod
   {
   public:
      /**
      * @param block output buffer
      * @param size of the block
      * @param current_position in the last block
      */
      virtual void pad(byte block[],
                       size_t size,
                       size_t current_position) const = 0;

      /**
      * @param block the last block
      * @param size the of the block
      */
      virtual size_t unpad(const byte block[],
                           size_t size) const = 0;

      /**
      * @param block_size of the cipher
      * @param position in the current block
      * @return number of padding bytes that will be appended
      */
      virtual size_t pad_bytes(size_t block_size,
                               size_t position) const;

      /**
      * @param block_size of the cipher
      * @return valid block size for this padding mode
      */
      virtual bool valid_blocksize(size_t block_size) const = 0;

      /**
      * @return name of the mode
      */
      virtual std::string name() const = 0;

      /**
      * virtual destructor
      */
      virtual ~BlockCipherModePaddingMethod() {}
   };

/**
* PKCS#7 Padding
*/
class BOTAN_DLL PKCS7_Padding : public BlockCipherModePaddingMethod
   {
   public:
      void pad(byte[], size_t, size_t) const;
      size_t unpad(const byte[], size_t) const;
      bool valid_blocksize(size_t) const;
      std::string name() const { return "PKCS7"; }
   };

/**
* ANSI X9.23 Padding
*/
class BOTAN_DLL ANSI_X923_Padding : public BlockCipherModePaddingMethod
   {
   public:
      void pad(byte[], size_t, size_t) const;
      size_t unpad(const byte[], size_t) const;
      bool valid_blocksize(size_t) const;
      std::string name() const { return "X9.23"; }
   };

/**
* One And Zeros Padding
*/
class BOTAN_DLL OneAndZeros_Padding : public BlockCipherModePaddingMethod
   {
   public:
      void pad(byte[], size_t, size_t) const;
      size_t unpad(const byte[], size_t) const;
      bool valid_blocksize(size_t) const;
      std::string name() const { return "OneAndZeros"; }
   };

/**
* Null Padding
*/
class BOTAN_DLL Null_Padding : public BlockCipherModePaddingMethod
   {
   public:
      void pad(byte[], size_t, size_t) const { return; }
      size_t unpad(const byte[], size_t size) const { return size; }
      size_t pad_bytes(size_t, size_t) const { return 0; }
      bool valid_blocksize(size_t) const { return true; }
      std::string name() const { return "NoPadding"; }
   };

}

#endif