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/*
* PK Filters
* (C) 1999-2009 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
#include <botan/pk_filts.h>
namespace Botan {
/*
* Append to the buffer
*/
void PK_Encryptor_Filter::write(const byte input[], u32bit length)
{
buffer.append(input, length);
}
/*
* Encrypt the message
*/
void PK_Encryptor_Filter::end_msg()
{
send(cipher->encrypt(buffer, buffer.size(), rng));
buffer.destroy();
}
/*
* Append to the buffer
*/
void PK_Decryptor_Filter::write(const byte input[], u32bit length)
{
buffer.append(input, length);
}
/*
* Decrypt the message
*/
void PK_Decryptor_Filter::end_msg()
{
send(cipher->decrypt(buffer, buffer.size()));
buffer.destroy();
}
/*
* Add more data
*/
void PK_Signer_Filter::write(const byte input[], u32bit length)
{
signer->update(input, length);
}
/*
* Sign the message
*/
void PK_Signer_Filter::end_msg()
{
send(signer->signature(rng));
}
/*
* Add more data
*/
void PK_Verifier_Filter::write(const byte input[], u32bit length)
{
verifier->update(input, length);
}
/*
* Verify the message
*/
void PK_Verifier_Filter::end_msg()
{
if(signature.is_empty())
throw Exception("PK_Verifier_Filter: No signature to check against");
bool is_valid = verifier->check_signature(signature, signature.size());
send((is_valid ? 1 : 0));
}
/*
* Set the signature to check
*/
void PK_Verifier_Filter::set_signature(const byte sig[], u32bit length)
{
signature.set(sig, length);
}
/*
* Set the signature to check
*/
void PK_Verifier_Filter::set_signature(const MemoryRegion<byte>& sig)
{
signature = sig;
}
/*
* PK_Verifier_Filter Constructor
*/
PK_Verifier_Filter::PK_Verifier_Filter(PK_Verifier* v, const byte sig[],
u32bit length) :
verifier(v), signature(sig, length)
{
}
/*
* PK_Verifier_Filter Constructor
*/
PK_Verifier_Filter::PK_Verifier_Filter(PK_Verifier* v,
const MemoryRegion<byte>& sig) :
verifier(v), signature(sig)
{
}
}
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