Abstract: A method and system for server-based encrypted messaging that uses a receiver-determined password to symmetrically encrypt messages that are intended for that receiver. A sender authenticates to a Recipient Password Server in order to generate a message and optionally to upload attachments, which are enclosed in a virtual envelope that is digitally signed. Each envelope is encrypted with the intended recipient's password and sent either as an email attachment or by other messaging protocol. Messages intended for multiple recipients are each custom encrypted with the individual recipient's password and mapped to the correct identity and reception point. Users can change their passwords at any time. A method is also included to support secure searches of a collection of encrypted envelopes for exact words and phrases.

Abstract: An electronic signature program to create an electronic signature for documents, filings, and transactions records effectuated between computers. A computer user is authenticated by a server computer. The computer user supplies certain information to the server computer, which extracts the information, and when a signature command is received, combines certain of the user submitted information with certain predetermined elements of the system information of the server, then digitally signs this combination of information along with the document, filing or transaction record which is being signed. The digitally signed combined information is returned to the user as the user's electronic signature of the information which was submitted for signature, together with the signed information, being the document, filing, or transaction record itself.

Abstract: An electronic certificate signature program to create electronic signatures for documents, filings, and commercial transactions effectuated over the Internet, other computer networks or by other transmission means. A digital certificate is issued to a computer user after a personal identity verification. The personalized digital certificate may include biometric data, such as a photograph, a retinal scan, a voice print, a fingerprint, a handwriting exemplar, or other biologically derived data, and a date and time stamp, all of which is digitally signed using the private key of the issuing computer. If a hardware token is employed to house the certificate, some or all of the biometric data is printed on the exterior. A digital signature is effectuated using a network computer's private key. A user presents the digital certificate and enters a unique passphrase or other identifying secret to gain access.