Inventor
TUCHMAN WALTER L
US8 patents
Patents
8 patentsUS4238854ADec 9, 1980
Cryptographic file security for single domain networks
IBM237 citations98
US4238853ADec 9, 1980
Cryptographic communication security for single domain networks
IBM194 citations97
US4203166AMay 13, 1980
Cryptographic file security for multiple domain networks
IBM264 citations97
US4193131AMar 11, 1980
Cryptographic verification of operational keys used in communication networks
IBM176 citations97
US4227253AOct 7, 1980
Cryptographic communication security for multiple domain networks
IBM183 citations96
US4500750AFeb 19, 1985
Cryptographic application for interbank verification
IBM110 citations95
US4386234AMay 31, 1983
Cryptographic communication and file security using terminals
IBM84 citations95
US4206315AJun 3, 1980
Digital signature system and apparatus
IBM54 citations92