/usr/include/botan/stream_cipher.h is in libbotan1.8-dev 1.8.13-4.
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 | /**
* Stream Cipher
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_STREAM_CIPHER_H__
#define BOTAN_STREAM_CIPHER_H__
#include <botan/sym_algo.h>
namespace Botan {
/*
* Stream Cipher
*/
class BOTAN_DLL StreamCipher : public SymmetricAlgorithm
{
public:
const u32bit IV_LENGTH;
/**
* Encrypt a message.
* @param i the plaintext
* @param o the byte array to hold the output, i.e. the ciphertext
* @param len the length of both i and o
*/
void encrypt(const byte i[], byte o[], u32bit len) { cipher(i, o, len); }
/**
* Decrypt a message.
* @param i the ciphertext to decrypt
* @param o the byte array to hold the output, i.e. the plaintext
* @param len the length of both i and o
*/
void decrypt(const byte i[], byte o[], u32bit len) { cipher(i, o, len); }
/**
* Encrypt a message.
* @param in the plaintext as input, after the function has
* returned it will hold the ciphertext
* @param len the length of in
*/
void encrypt(byte in[], u32bit len) { cipher(in, in, len); }
/**
* Decrypt a message.
* @param in the ciphertext as input, after the function has
* returned it will hold the plaintext
* @param len the length of in
*/
void decrypt(byte in[], u32bit len) { cipher(in, in, len); }
/**
* Resync the cipher using the IV
* @param iv the initialization vector
* @param iv_len the length of the IV in bytes
*/
virtual void resync(const byte iv[], u32bit iv_len);
/**
* Seek ahead in the stream.
* @param len the length to seek ahead.
*/
virtual void seek(u32bit len);
/**
* Get a new object representing the same algorithm as *this
*/
virtual StreamCipher* clone() const = 0;
/**
* Zeroize internal state
*/
virtual void clear() throw() = 0;
StreamCipher(u32bit key_min, u32bit key_max = 0,
u32bit key_mod = 1,
u32bit iv_len = 0) :
SymmetricAlgorithm(key_min, key_max, key_mod),
IV_LENGTH(iv_len) {}
virtual ~StreamCipher() {}
private:
virtual void cipher(const byte[], byte[], u32bit) = 0;
};
}
#endif
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