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PublicKey.cpp
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PublicKey.cpp
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/*
* Copyright (c) 2007-2011 Digital Bazaar, Inc. All rights reserved.
*/
#include "monarch/crypto/PublicKey.h"
#include "monarch/rt/Exception.h"
#include <openssl/err.h>
#include <openssl/rsa.h>
using namespace monarch::crypto;
using namespace monarch::io;
using namespace monarch::rt;
PublicKey::PublicKey(EVP_PKEY* pkey) : AsymmetricKey(pkey)
{
}
PublicKey::~PublicKey()
{
}
int PublicKey::encrypt(const char* data, int length, char* out)
{
int rval = -1;
RSA* rsa = EVP_PKEY_get1_RSA(mKey);
if(rsa == NULL)
{
ExceptionRef e = new Exception(
"Could not encrypt data. Public key is not an RSA key.",
"monarch.crypto.PublicKey.InvalidType");
Exception::set(e);
}
else
{
// TODO: support other padding types?
rval = RSA_public_encrypt(
length, (const unsigned char*)data, (unsigned char*)out,
rsa, RSA_PKCS1_PADDING);
if(rval == -1)
{
ExceptionRef e = new Exception(
"Could not encrypt data.",
"monarch.crypto.PublicKey.DecryptionError");
e->getDetails()["error"] = ERR_error_string(ERR_get_error(), NULL);
Exception::set(e);
}
RSA_free(rsa);
}
return rval;
}
int PublicKey::encrypt(
const char* data, int length, ByteBuffer* out, bool resize)
{
int rval = -1;
// allocate space for data
out->allocateSpace((int)this->getOutputSize(), resize);
// do encrypt
rval = encrypt(data, length, out->end());
if(rval != -1)
{
// extend buffer length
out->extend(rval);
}
return rval;
}