> The general approach is to encrypt data using a symmetric cipher (e.g., > AES-256) with a randomly-generated key, and then encrypt that symmetric key > with the RSA (public) key. AES-256 requires a RSA modulus with an equivalent strength, which is a 15360 (IIRC). If you choose RSA-1024 or RSA-2048, you are off by orders of magnitude.
On Thu, Jul 8, 2010 at 11:43 PM, Phillip Hellewell <[email protected]> wrote: > The general approach is to encrypt data using a symmetric cipher (e.g., > AES-256) with a randomly-generated key, and then encrypt that symmetric key > with the RSA (public) key. > > And for the symmetric encryption you'll also have to make a decision about > what mode to use (ECB, CBC, CTR, etc). Whatever you do, don't use ECB :) > > Phillip > > On Thu, Jul 8, 2010 at 7:40 PM, Chuck Pareto <[email protected]> wrote: >> >> Is there an algorithm that I can use, similar to RSA with public/private >> key, that will allow me to encrypt really long strings (like an email/text >> file)? Actually no limit on the size would be ideal. > > ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List [email protected] Automated List Manager [email protected]
