Re: Help on Diffie Hellman key exchange

[Jason Qian via openssl-users <openssl-users@xxxxxxxxxxx>]

Thanks Rich and Tomas,

Here is the code for creating the key (openssl-0.9.8h)

int AESCipher::createKey(unsigned char *buf, int keySize) {

char seed[256];
::sprintf(seed, "%ldXXX_XXX_H__xxxxx_xxxx_xxx_xxxxx_xxxxxxx__INCLUDED_", MiscUtils::generateId());
RAND_seed(seed, ::strlen(seed));

RAND_bytes(buf, keySize / 8);
return keySize / 8;
}

For using 1.1.0, we only need to call RAND_bytes() ?

Jason

On Wed, Nov 13, 2019 at 12:11 PM Salz, Rich <rsalz@xxxxxxxxxx> wrote:

>    RAND_seed(seed, ::strlen(seed));
>    RAND_bytes(buf, keySize / 8);

 

I don’t know where you are getting the seed, but it is typically binary data, not a C string.

 

If you are using 1.1.0 or later, you do not need to seed things.