Patents by Inventor Carl E. Bach

Carl E. Bach has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for use in public-key data encryption system
    Patent number: 4633036
    Abstract: In an encryption scheme based on the use of a public key having secret factors p and q, additional requirements on p and q are invoked in order to ensure a high level of security. In particular, it is additionally required that a value p+1 have a large prime factor r and that the value r-1 also have a large prime factor r'.
    Type: Grant
    Filed: May 31, 1984
    Date of Patent: December 30, 1986
    Assignee: Martin E. Hellman
    Inventors: Martin E. Hellman, Carl E. Bach