Jens Peter Secher <[EMAIL PROTECTED]> writes:
> I have to encrypt a very small payload (< 64 bits) with an asymmetric
> scheme. The total ciphertext must be less than 200 bits. Efficiency is
> irrelevant. What is the best non-patented way of doing this?
The reason for the 200 bits limit is that it should be possible to give
the ciphertext over the phone.
I have now found out that what I really want is most likely to be some
form of private-key signing with message recovery. I have tried
RabinSS/PSSR/SHA, RWSS/PSSR/MD5, etc., which gives me a payload of 86-94
bytes. But, of course, they also give me 128 byte signatures.
Is there anybody who has a suggestion on how to use the functionality of
crypto++ to get the ciphertext down to around 32 bytes, but still have
message recovery?
Thanks in advance,
--
Jens Peter Secher
_jpsecher get2net dk DD6A 05B0 174E BFB2 D4D9 B52E 0EE5 978A FE63 E8A1_
