Re: Elliptic Curve key generation help

[Jason Goldberg]

Before you call generate_key, you need to initialize your EC_KEY with a curve:

EC_GROUP *group = EC_GROUP_new_by_curve_name(curve);
EC_KEY_set_group(testKey, group);

For 'curve' you could use, for example, NIST P256 which is defined with the 
macro: NID_X9_62_prime256v1

You can then use these primitives to get the public and private keys:

EC_KEY_get0_private_key
EC_KEY_get0_public_key

Jason

On Aug 14, 2012, at 5:49 PM, Tom Leavy 
<tombu...@gmail.com<mailto:tombu...@gmail.com>>
 wrote:

I have been trying to figure out how to generate an elliptic curve public 
private key pair and can't find much information on how you properly do that. 
So far I have done the following and I'm pretty sure I am missing a step 
someplace.

void makeECCKeyPair() {
    EC_KEY *testKey = EC_KEY_new();
    EC_KEY_generate_key(testKey);
}