Certified Email System and Method" and "email Attachment Security System and Method Using Out-of-band Authentication

US 8,341,023, US 8,374,930 and US 8,423,437 and 1 further US patent, assigned to Trustifi LLC, cover relates to security arrangements for protecting digital file data against unauthorized activity, wherein access to the digital file data is dependent upon cryptographically processed data for personal verification, including a device that produces a personal identification number, and are available for sale through IPApproach.

US Patents

4 granted

Foreign Counterparts

5

Assignee

Trustifi LLC

Availability

For Sale

Patents Included

• US 8,341,023↗
• US 8,374,930↗
• US 8,423,437↗
• US 10,469,467↗

• CA 2800903 C
• EP 2443608 B1
• WO 2010148261 A8
• CA 2988106 A1
• WO 2017035486 A1

Technology Highlights

• The invention provides easy-to-use and automated verifying tool that is used with time-stamped emails.
• The invention provides the convenient web-based automated verification services, such as a content-proof verifying tool and a verify HASH tool.
• The invention provides a convenient multi-party content management system integrated with the time-stamping function of the certified email system, which provides archiving, collaborating and searching of time-stamps and time-stamp-related data.
• The invention requires no plug-in, client download, or software installation on the sender or recipient devices.
• The invention provides irrefutable evidence of an email's contents, time of sending, and recipient electronic-delivery addresses.
• The invention provides a web services time-stamp conduit that is use by one or more demanding party to conveniently request and receive a time stamp.
• The invention is adaptable with any email service or client on any computing device capable of sending email.
• The invention do not requires configuration changes on the MUA (Mail User Agent), any installation or configuration of the MTA (Mail Transfer Agent) and the end user to login to a website to use the system.
• The invention provides an easy to use and convenient method of out-of-band authentication that allows a recipient to receive a secure digital file from a sender.
• The invention is easy for the sender to use, because it only requires the recipient-specific digital file along with the particular recipient's phone number and email address.
• The invention remembers the authentication for a pre-determined authentication session time once the recipient has been authenticated.

Overview

The technology disclosed provides the following advantages:

Listing updated August 21, 2026

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