Hi,
I think I got the solution. I now use ArraySource to read the 'key'
generated for the AES algorithm.
Can anyone check whether this is correct?
Code:
/************************************************/
int main (int argc, char* argv[])
{
// Pseudo Random Number Generator
AutoSeededRandomPool rng;
// Generate session key for AES
byte key[AES::DEFAULT_KEYLENGTH];
rng.GenerateBlock(key, AES::DEFAULT_KEYLENGTH);
// Generate random IV for AES
byte iv[AES::BLOCKSIZE];
rng.GenerateBlock(iv, AES::BLOCKSIZE);
// Define privateKey & publicKey as RSA asymmetric keys
RSA::PrivateKey privateKey;
RSA::PublicKey publicKey;
//Load pregenerated RSA Keys
privateKey.Load( FileSource ("private.key", true ).Ref());
publicKey.Load( FileSource ("public.key", true).Ref());
// Prepare key for encryption
string hexKey, cipherKey;
ArraySource (key, sizeof(key), true,
new HexEncoder (
new StringSink (hexKey)
)
);
// Save hexKey to 'hexkey.txt'
StringSource (hexKey, true, new FileSink("hexkey.txt"));
// Encrypt Session Key
RSAES_OAEP_SHA_Encryptor encrypt (publicKey);
StringSource(hexKey, true,
new PK_EncryptorFilter (rng, encrypt,
new StringSink (cipherKey)
)
);
return 0;
}
/************************************************/
Thank you,
fboyixiz
fboyixiz wrote:
>
> Hi,
>
> I know this sounds silly but I have a hard time trying to encrypt the AES
> session key using RSA.
> I know that the is key is in byte, can I still use StringSource to read
> the key and encrypt using PK_EncryptorFilter?
>
> Below is my coding:
>
> int main (int argc, char* argv[])
> {
> // Pseudo Random Number Generator
> AutoSeededRandomPool rng;
>
> // Generate session key for AES
> byte key[AES::DEFAULT_KEYLENGTH];
> rng.GenerateBlock(key, AES::DEFAULT_KEYLENGTH);
>
> // Generate random IV for AES
> byte iv[AES::BLOCKSIZE];
> rng.GenerateBlock(iv, AES::BLOCKSIZE);
>
> // Define privateKey & publicKey as RSA asymmetric keys
> RSA::PrivateKey privateKey;
> RSA::PublicKey publicKey;
>
> //Load pregenerated RSA Keys
> privateKey.Load( FileSource ("private.key", true ).Ref());
> publicKey.Load( FileSource ("public.key", true).Ref());
>
> /*****************************************************/
> // Encrypt Session Key
> RSAES_OAEP_SHA_Encryptor encrypt (publicKey);
>
> string cipherKey,cipherIV, hexKey;
>
> StringSource (key, new HexEncoder (new StringSink (hexKey)) );
> cout << "Key: " << hexKey;
>
> StringSource (hexKey, true, new PK_EncryptorFilter (rng, encrypt,
> new StringSink (cipherKey)));
>
> /******************************************************/
> return 0;
> }
>
> Thanks you,
> fboyixiz
>
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