Re: The minimum RSA message size

"Dmitry Sychov" <dmitry.sychov@xxxxxxxxx> wrote in message news:9701557d-068c-4cfd-be4f-d32187a49077@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
RSA Masters!

I'am trying to figure out what should be the minimum acceptable
message length to encode for RSA-1024, RSA-2048 with e = 3;

so for RSA-1024 i guess it should be >= 11 bits, for RSA-2048 >= 13
bits

but what are the 'safe' numbers?

internet search reveals nothing!

It really depends on how you are using RSA. Search for OAEP-RSA, I've found that most people have little difficulty implementing the PKCS #1 standard for OAEP at http://www.rsa.com/rsalabs/node.asp?id=2125 . As long as you stick with OAEP, you shouldn't have any problems with messages being too short.
Joe

.

Loading