Hi David, 1. I am not sure what you mean by replacing RSA_generate_key with my own function, because I would like it to go through the process of creating prime numbers, and modulus, etc. Basically I want the RSA_generate_key to generate the same public key at startup each time my process runs.
2. You say I could do this with writing my own PRNG? Do you have an example of this? 3. I went into the RSA_generate_key code and I saw during the prime number calculation that the function bnrand() actually uses the system time as a seed. If this was the case, how could I ever get RSA_generate_key to return the same public key? -----Original Message----- From: David Schwartz [mailto:dav...@webmaster.com] Sent: Monday, January 31, 2011 7:37 PM To: openssl-users@openssl.org Cc: Ashwin Chandra Subject: Re: RSA_generate_key function On 1/31/2011 5:37 PM, Ashwin Chandra wrote: > I would like to call this function to generate the same public/private > key everytime. > > I thought all I had to do was create the same seed using RAND_seed > each time, however I still keep getting different key pairs. > > Is there any way to have RSA_generate_key generate the same > public/private key each time? (I know this doesn't make sense security > wise, but the work I have to do requires it). > Replace RSA_generate_key with your own function that returns the desired key. Using the same seed each time won't work because intervening operations can leave the PRNG in a different state. You could use your own PRNG to replace OpenSSL's and then put it into a particular state prior to calling RSA_generate_key. DS ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager majord...@openssl.org
