Inventor
KRAWCZYK HUGO MARIO
IL4 patents
Patents
4 patentsUS5745678AApr 28, 1998
Method and system for the secured distribution of multimedia titles
IBM513 citations98
USRE38375EDec 30, 2003
Method and system for the secured distribution of multimedia titles
IBM134 citations97
US6292897B1Sep 18, 2001
Undeniable certificates for digital signature verification
IBM196 citations97
US6108783AAug 22, 2000
Chameleon hashing and signatures
IBM187 citations96