Hi all,
it seems that the interface for elliptic key cryptography hast completely
changed from version 4.2 to 5.2.1 and I couldn't find any documentation,
which is up to date.
I just want to test encoding, but I alway get an unhandled exception when
asking for the ciphertext length.
This is what I did (I have no idea, whether the principle is correct or not,
so it would be great if you could tell me that):
I derived my own crypto class from the interface ECIES<ECP>. It has the
following member variables:
PublicKey pub_key;
PrivateKey priv_key;
DL_GroupParameters_EC<ECP> ec_context;
AutoSeededRandomPool rng;
Encryptor encryptor;
Decryptor decryptor;
On initialization, I create the keys:
{
ec_context.Initialize(rng, ASN1::secp224k1());
priv_key.Initialize(rng, ec_context);
priv_key.MakePublicKey(pub_key);
}
Now, I want to encrypt a buffer and during the call of
encryptor.CiphertextLength(sizeof(msg))
I get the unhandled exception. Do you need a stack trace or is the error
obvious?
Did I miss to initialize any context? Do I need to initialize the
encryptor/decryptor? Is it the right way to derive the Interface for my own
purposes?
Does anybody know, where I can find some documentation about elliptic curve
cryptography in crypto++ 5.2.1?
I hope anybody can help me.
Greetings,
Christian Beckel
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