Botan  1.11.10
Public Member Functions | List of all members
Botan::PK_Encryptor_EME Class Reference

#include <pubkey.h>

Inheritance diagram for Botan::PK_Encryptor_EME:
Botan::PK_Encryptor

Public Member Functions

std::vector< byteencrypt (const byte in[], size_t length, RandomNumberGenerator &rng) const
 
template<typename Alloc >
std::vector< byteencrypt (const std::vector< byte, Alloc > &in, RandomNumberGenerator &rng) const
 
size_t maximum_input_size () const
 
 PK_Encryptor_EME (const Public_Key &key, const std::string &eme)
 

Detailed Description

Encryption with an MR algorithm and an EME.

Definition at line 394 of file pubkey.h.

Constructor & Destructor Documentation

Botan::PK_Encryptor_EME::PK_Encryptor_EME ( const Public_Key key,
const std::string &  eme 
)

Construct an instance.

Parameters
keythe key to use inside the decryptor
emethe EME to use

Definition at line 22 of file pubkey.cpp.

References Botan::Public_Key::algo_name(), Botan::get_eme(), Botan::Library_State::global_rng(), Botan::Global_State_Management::global_state(), and Botan::Algorithm_Factory::Engine_Iterator::next().

24  {
25  Algorithm_Factory::Engine_Iterator i(global_state().algorithm_factory());
26  RandomNumberGenerator& rng = global_state().global_rng();
27 
28  while(const Engine* engine = i.next())
29  {
30  m_op.reset(engine->get_encryption_op(key, rng));
31  if(m_op)
32  break;
33  }
34 
35  if(!m_op)
36  throw Lookup_Error("Encryption with " + key.algo_name() + " not supported");
37 
38  m_eme.reset(get_eme(eme_name));
39  }
BOTAN_DLL EME * get_eme(const std::string &algo_spec)
Definition: get_pk_pad.cpp:114
RandomNumberGenerator & global_rng()
Definition: libstate.cpp:56
friend class Engine_Iterator
Definition: algo_factory.h:205
Library_State & global_state()

Member Function Documentation

std::vector<byte> Botan::PK_Encryptor::encrypt ( const byte  in[],
size_t  length,
RandomNumberGenerator rng 
) const
inlineinherited

Encrypt a message.

Parameters
inthe message as a byte array
lengththe length of the above byte array
rngthe random number source to use
Returns
encrypted message

Definition at line 48 of file pubkey.h.

Referenced by Botan::TLS::Client_Key_Exchange::Client_Key_Exchange(), Botan::KeyPair::encryption_consistency_check(), and Botan::PK_Encryptor_Filter::end_msg().

50  {
51  return enc(in, length, rng);
52  }
template<typename Alloc >
std::vector<byte> Botan::PK_Encryptor::encrypt ( const std::vector< byte, Alloc > &  in,
RandomNumberGenerator rng 
) const
inlineinherited

Encrypt a message.

Parameters
inthe message
rngthe random number source to use
Returns
encrypted message

Definition at line 61 of file pubkey.h.

63  {
64  return enc(&in[0], in.size(), rng);
65  }
size_t Botan::PK_Encryptor_EME::maximum_input_size ( ) const
virtual

Return the maximum allowed message size in bytes.

Returns
maximum message size in bytes

Implements Botan::PK_Encryptor.

Definition at line 71 of file pubkey.cpp.

Referenced by Botan::KeyPair::encryption_consistency_check().

72  {
73  if(!m_eme)
74  return (m_op->max_input_bits() / 8);
75  else
76  return m_eme->maximum_input_size(m_op->max_input_bits());
77  }

The documentation for this class was generated from the following files: