A programmed computer secures communications between users of a crypto-system in which each user has an associated asymmetric crypto-key with a public key portion accessible to all system users and a corresponding private key portion having a first private key portion known only to the...http://www.google.fr/patents/US5737419?utm_source=gb-gplus-shareBrevet US5737419 - Computer system for securing communications using split private key asymmetric cryptography
Computer system for securing communications using split private key ...