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/*************************************************
* Public Key Interface Header File *
* (C) 1999-2006 The Botan Project *
*************************************************/
#ifndef BOTAN_PUBKEY_H__
#define BOTAN_PUBKEY_H__
#include <botan/base.h>
#include <botan/pk_keys.h>
#include <botan/pk_util.h>
namespace Botan {
/*************************************************
* Public Key Encryptor *
*************************************************/
class PK_Encryptor
{
public:
SecureVector<byte> encrypt(const byte[], u32bit) const;
SecureVector<byte> encrypt(const MemoryRegion<byte>&) const;
virtual u32bit maximum_input_size() const = 0;
virtual ~PK_Encryptor() {}
private:
virtual SecureVector<byte> enc(const byte[], u32bit) const = 0;
};
/*************************************************
* Public Key Decryptor *
*************************************************/
class PK_Decryptor
{
public:
SecureVector<byte> decrypt(const byte[], u32bit) const;
SecureVector<byte> decrypt(const MemoryRegion<byte>&) const;
virtual ~PK_Decryptor() {}
private:
virtual SecureVector<byte> dec(const byte[], u32bit) const = 0;
};
/*************************************************
* Public Key Signer *
*************************************************/
class PK_Signer
{
public:
SecureVector<byte> sign_message(const byte[], u32bit);
SecureVector<byte> sign_message(const MemoryRegion<byte>&);
void update(byte);
void update(const byte[], u32bit);
void update(const MemoryRegion<byte>&);
SecureVector<byte> signature();
void set_output_format(Signature_Format);
PK_Signer(const PK_Signing_Key&, const std::string&);
~PK_Signer() { delete emsa; }
private:
const PK_Signing_Key& key;
Signature_Format sig_format;
EMSA* emsa;
};
/*************************************************
* Public Key Verifier *
*************************************************/
class PK_Verifier
{
public:
bool verify_message(const byte[], u32bit, const byte[], u32bit);
bool verify_message(const MemoryRegion<byte>&,
const MemoryRegion<byte>&);
void update(byte);
void update(const byte[], u32bit);
void update(const MemoryRegion<byte>&);
bool check_signature(const byte[], u32bit);
bool check_signature(const MemoryRegion<byte>&);
void set_input_format(Signature_Format);
PK_Verifier(const PK_Key&, const std::string&);
virtual ~PK_Verifier() { delete emsa; }
protected:
virtual bool validate_signature(const MemoryRegion<byte>&,
const byte[], u32bit) = 0;
Signature_Format sig_format;
EMSA* emsa;
private:
const PK_Key& key;
};
/*************************************************
* Key Agreement *
*************************************************/
class PK_Key_Agreement
{
public:
SymmetricKey derive_key(u32bit, const byte[], u32bit,
const std::string& = "") const;
SymmetricKey derive_key(u32bit, const byte[], u32bit,
const byte[], u32bit) const;
PK_Key_Agreement(const PK_Key_Agreement_Key&, const std::string&);
private:
const PK_Key_Agreement_Key& key;
const std::string kdf_name;
};
/*************************************************
* Encryption with an MR algorithm and an EME *
*************************************************/
class PK_Encryptor_MR_with_EME : public PK_Encryptor
{
public:
u32bit maximum_input_size() const;
PK_Encryptor_MR_with_EME(const PK_Encrypting_Key&, const std::string&);
~PK_Encryptor_MR_with_EME() { delete encoder; }
private:
SecureVector<byte> enc(const byte[], u32bit) const;
const PK_Encrypting_Key& key;
const EME* encoder;
};
/*************************************************
* Decryption with an MR algorithm and an EME *
*************************************************/
class PK_Decryptor_MR_with_EME : public PK_Decryptor
{
public:
PK_Decryptor_MR_with_EME(const PK_Decrypting_Key&, const std::string&);
~PK_Decryptor_MR_with_EME() { delete encoder; }
private:
SecureVector<byte> dec(const byte[], u32bit) const;
const PK_Decrypting_Key& key;
const EME* encoder;
};
/*************************************************
* Public Key Verifier with Message Recovery *
*************************************************/
class PK_Verifier_with_MR : public PK_Verifier
{
public:
PK_Verifier_with_MR(const PK_Verifying_with_MR_Key&, const std::string&);
private:
bool validate_signature(const MemoryRegion<byte>&, const byte[], u32bit);
const PK_Verifying_with_MR_Key& key;
};
/*************************************************
* Public Key Verifier without Message Recovery *
*************************************************/
class PK_Verifier_wo_MR : public PK_Verifier
{
public:
PK_Verifier_wo_MR(const PK_Verifying_wo_MR_Key&, const std::string&);
private:
bool validate_signature(const MemoryRegion<byte>&, const byte[], u32bit);
const PK_Verifying_wo_MR_Key& key;
};
}
#endif
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