RSA in a few lines of Perl: the “munitions” signature

Adam Back posts a tiny Perl program implementing RSA to the cypherpunks list, small enough for an email signature. US export rules then classed strong crypto as munitions; the code was printed on a T-shirt (a Commodity Jurisdiction Request for the “perl-RSA t-shirt” was posted to the list in October 1995). The rules were relaxed in 1999.

“Heres a bit of perl code which implements RSA encryption and decryption and is small enough to use for a signature”

People: Adam Back.