/usr/include/botan-1.10/botan/cfb.h is in libbotan1.10-dev 1.10.8-2+deb8u2.
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 | /*
* CFB Mode
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_CFB_H__
#define BOTAN_CFB_H__
#include <botan/block_cipher.h>
#include <botan/key_filt.h>
namespace Botan {
/**
* CFB Encryption
*/
class BOTAN_DLL CFB_Encryption : public Keyed_Filter
{
public:
std::string name() const { return cipher->name() + "/CFB"; }
void set_iv(const InitializationVector&);
void set_key(const SymmetricKey& key) { cipher->set_key(key); }
bool valid_keylength(size_t key_len) const
{ return cipher->valid_keylength(key_len); }
bool valid_iv_length(size_t iv_len) const
{ return (iv_len == cipher->block_size()); }
CFB_Encryption(BlockCipher* cipher, size_t feedback = 0);
CFB_Encryption(BlockCipher* cipher,
const SymmetricKey& key,
const InitializationVector& iv,
size_t feedback = 0);
~CFB_Encryption() { delete cipher; }
private:
void write(const byte[], size_t);
BlockCipher* cipher;
SecureVector<byte> buffer, state;
size_t position, feedback;
};
/**
* CFB Decryption
*/
class BOTAN_DLL CFB_Decryption : public Keyed_Filter
{
public:
std::string name() const { return cipher->name() + "/CFB"; }
void set_iv(const InitializationVector&);
void set_key(const SymmetricKey& key) { cipher->set_key(key); }
bool valid_keylength(size_t key_len) const
{ return cipher->valid_keylength(key_len); }
bool valid_iv_length(size_t iv_len) const
{ return (iv_len == cipher->block_size()); }
CFB_Decryption(BlockCipher* cipher, size_t feedback = 0);
CFB_Decryption(BlockCipher* cipher,
const SymmetricKey& key,
const InitializationVector& iv,
size_t feedback = 0);
~CFB_Decryption() { delete cipher; }
private:
void write(const byte[], size_t);
BlockCipher* cipher;
SecureVector<byte> buffer, state;
size_t position, feedback;
};
}
#endif
|