/usr/include/botan/dh.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 | /*
* Diffie-Hellman
* (C) 1999-2007 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#ifndef BOTAN_DIFFIE_HELLMAN_H__
#define BOTAN_DIFFIE_HELLMAN_H__
#include <botan/dl_algo.h>
#include <botan/dh_core.h>
namespace Botan {
/**
* This class represents Diffie-Hellman public keys.
*/
class BOTAN_DLL DH_PublicKey : public virtual DL_Scheme_PublicKey
{
public:
std::string algo_name() const { return "DH"; }
MemoryVector<byte> public_value() const;
u32bit max_input_bits() const;
DL_Group::Format group_format() const { return DL_Group::ANSI_X9_42; }
/**
* Construct an uninitialized key. Use this constructor if you wish
* to decode an encoded key into the new instance.
*/
DH_PublicKey() {}
/**
* Construct a public key with the specified parameters.
* @param grp the DL group to use in the key
* @param y the public value y
*/
DH_PublicKey(const DL_Group& grp, const BigInt& y);
private:
void X509_load_hook();
};
/**
* This class represents Diffie-Hellman private keys.
*/
class BOTAN_DLL DH_PrivateKey : public DH_PublicKey,
public PK_Key_Agreement_Key,
public virtual DL_Scheme_PrivateKey
{
public:
SecureVector<byte> derive_key(const byte other[], u32bit length) const;
SecureVector<byte> derive_key(const DH_PublicKey& other) const;
SecureVector<byte> derive_key(const BigInt& other) const;
MemoryVector<byte> public_value() const;
/**
* Construct an uninitialized key. Use this constructor if you wish
* to decode an encoded key into the new instance.
*/
DH_PrivateKey() {}
/**
* Construct a private key with predetermined value.
* @param rng random number generator to use
* @param grp the group to be used in the key
* @param x the key's secret value (or if zero, generate a new key)
*/
DH_PrivateKey(RandomNumberGenerator& rng, const DL_Group& grp,
const BigInt& x = 0);
private:
void PKCS8_load_hook(RandomNumberGenerator& rng, bool = false);
DH_Core core;
};
}
#endif
|