/usr/include/botan-1.10/botan/xts.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.
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 | /*
* XTS mode, from IEEE P1619
* (C) 2009 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_XTS_H__
#define BOTAN_XTS_H__
#include <botan/block_cipher.h>
#include <botan/key_filt.h>
#include <botan/buf_filt.h>
namespace Botan {
/**
* IEEE P1619 XTS Encryption
*/
class BOTAN_DLL XTS_Encryption : public Keyed_Filter,
private Buffered_Filter
{
public:
void set_key(const SymmetricKey& key);
void set_iv(const InitializationVector& iv);
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()); }
std::string name() const;
XTS_Encryption(BlockCipher* ciph);
XTS_Encryption(BlockCipher* ciph,
const SymmetricKey& key,
const InitializationVector& iv);
~XTS_Encryption() { delete cipher; delete cipher2; }
private:
void write(const byte[], size_t);
void end_msg();
void buffered_block(const byte input[], size_t input_length);
void buffered_final(const byte input[], size_t input_length);
BlockCipher* cipher;
BlockCipher* cipher2;
SecureVector<byte> tweak;
};
/**
* IEEE P1619 XTS Encryption
*/
class BOTAN_DLL XTS_Decryption : public Keyed_Filter,
private Buffered_Filter
{
public:
void set_key(const SymmetricKey& key);
void set_iv(const InitializationVector& iv);
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()); }
std::string name() const;
XTS_Decryption(BlockCipher* ciph);
XTS_Decryption(BlockCipher* ciph,
const SymmetricKey& key,
const InitializationVector& iv);
~XTS_Decryption() { delete cipher; delete cipher2; }
private:
void write(const byte[], size_t);
void end_msg();
void buffered_block(const byte input[], size_t input_length);
void buffered_final(const byte input[], size_t input_length);
BlockCipher* cipher;
BlockCipher* cipher2;
SecureVector<byte> tweak;
};
}
#endif
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