Patents by Inventor Meelis Roos

Meelis Roos 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 validating a digital signature
    Patent number: 7178029
    Abstract: Method and system are described for validating a digital signature. More particularly, a signed message and a corresponding certificate are received. The certificate is checked for validation. A validation statement is generated, and the certificate validation and the signed message provide a status. This status represents a request for validation, and is provided along with a set of validations among which such status is an element. A digest is generated using a Merkle authentication tree corresponding to the set of validations, and this digest is signed with a private key. Accordingly, a notary may provide the signed digest, status and the set of validations for subsequent confirmation of the digital signature.
    Type: Grant
    Filed: February 9, 2001
    Date of Patent: February 13, 2007
    Assignee: Privador, Ltd
    Inventors: Arne Ansper, Ahto Buidas, Meelis Roos, Jan Villemson
  • Method and apparatus for validating a digital signature
    Publication number: 20010032314
    Abstract: Method and system are described for validating a digital signature. More particularly, a signed message and a corresponding certificate are received. The certificate is checked for validation. A validation statement is generated, and the certificate validation and the signed message provide a status. This status represents a request for validation, and is provided along with a set of validations among which such status is an element. A digest is generated using a Merkle authentication tree corresponding to the set of validations, and this digest is signed with a private key. Accordingly, a notary may provide the signed digest, status and the set of validations for subsequent confirmation of the digital signature.
    Type: Application
    Filed: February 9, 2001
    Publication date: October 18, 2001
    Inventors: Arne Ansper, Ahto Buldas, Meelis Roos, Jan Villemson