/usr/include/botan-1.10/botan/cts.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 | /*
* CTS Mode
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_CTS_H__
#define BOTAN_CTS_H__
#include <botan/block_cipher.h>
#include <botan/key_filt.h>
namespace Botan {
/**
* CBC encryption with ciphertext stealing
*/
class BOTAN_DLL CTS_Encryption : public Keyed_Filter
{
public:
std::string name() const { return cipher->name() + "/CTS"; }
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()); }
CTS_Encryption(BlockCipher* cipher);
CTS_Encryption(BlockCipher* cipher,
const SymmetricKey& key,
const InitializationVector& iv);
~CTS_Encryption() { delete cipher; }
private:
void write(const byte[], size_t);
void end_msg();
void encrypt(const byte[]);
BlockCipher* cipher;
SecureVector<byte> buffer, state;
size_t position;
};
/**
* CBC decryption with ciphertext stealing
*/
class BOTAN_DLL CTS_Decryption : public Keyed_Filter
{
public:
std::string name() const { return cipher->name() + "/CTS"; }
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()); }
CTS_Decryption(BlockCipher* cipher);
CTS_Decryption(BlockCipher* cipher,
const SymmetricKey& key,
const InitializationVector& iv);
~CTS_Decryption() { delete cipher; }
private:
void write(const byte[], size_t);
void end_msg();
void decrypt(const byte[]);
BlockCipher* cipher;
SecureVector<byte> buffer, state, temp;
size_t position;
};
}
#endif
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