International Business Machines Corporation

Globalfoundries Inc.

Philipp Hoffmann

Daniel Pittner

Michael Baessler

Thomas A P Hampp-Bahnmueller

Juergen Maletz

Werner Schollenberger

Jochen F Doerre

Markus Lorch

Dirk Seider

David Lebutsch

Martin Oberhofer

Mehmet Uenluetepe

Michael Bässler

Thomas Hampp

A computer processor may extract identity information from a document. The identity information may include at least one custodian identity attribute. After extracting the identity information, the computer processor may determine that the identity information is associated with a specific custodian. The computer processor may then search for the custodian identity attribute in a custodian directory to determine whether the custodian directory contains an entry for the custodian. If the custodian is not in the custodian directory, the computer processor may create a new entry in the custodian directory for the custodian and store the extracted identity information in the new entry.

Maintaining a custodian directory by analyzing documents

The invention relates to a computer-implemented method for user authentication using a cryptographically secured register. An authentication request for authenticating the user is received. The user is authenticated using a root identity of the user. A successful authentication requires receiving a credential assigned to a root identifier of the root identity of the user. An authentication context of the requested authentication is identified. One of the one or more delegated identities assigned to the root identity of the user and assigned to the identified authentication context is identified. In response to a successful authentication of the user, an authentication token is issued confirming the successful user authentication and identifying the successfully authenticated user by the delegated identifier of the identified delegated identity.

Authentication using delegated identities

The invention relates to a computer-implemented method for performing an electronic discovery process using a blockchain. For at least two of phases of the electronic discovery process individual electronic data processing tools are used for executing the respective phase. For each of the phases of the electronic discovery process metadata of the electronic data objects subject to the respective phase of the electronic discovery process and to the electronic data processing tool used for executing the respective phase are stored in the blockchain. Furthermore, audit information about auditable actions carried out during the respective phase by the electronic data processing tool used for executing the respective phase on the electronic data objects is stored in the blockchain. The stored audit information provides an end-to-end audit trail for each of the electronic data objects subject to at least one of the phases of the electronic discovery process.

Electronic discovery process using a blockchain

Providing an encrypted search index for performing searches on encrypted documents, the method comprising: (i) providing a set of documents, the documents comprising a plurality of unencrypted phrases; (ii) providing a master key; (iii) providing, based on the master key, for each phrase a set of encryption keys comprising one or more encryption keys; (iv) selecting, for each phrase, one encryption key of the set of encryption keys; (v) encrypting each phrase with the selected encryption key; and (vi) building an index based on the encrypted phrases, the index comprising information regarding which encrypted phrase is comprised within a certain document.

Providing secure indexes for searching encrypted data

A computer-implemented method, carried out by one or more processors, for consolidating an index entry of a dictionary. In an embodiment, the method comprises the steps of receiving, by one or more processors, a set of parameters, wherein the set of parameters indicates at least a length of prefix and a length of hash value; receiving, by one or more processors, a first term for entry into an index; converting, by one or more processors, the first term for entry into the index according to the set of parameters; and responsive to determining the converted first term is not present in the index, storing, by one or more processors, the first converted term into the index.

Term consolidation for indices

A computer manages methods for determining accurate document transformation by rendering the source document into a non-rasterized format, where the non-rasterized format is a rendered source document. The computer rendering the target document into a non-rasterized format, where the non-rasterized format is a rendered target document. The computer comparing one or more aspects of the rendered source document to corresponding one or more aspects of the rendered target document. The computer determining, based, at least in part, on the compared one or more aspects, whether or not the source document was accurately transformed to the target document.

Verification of transformed content

According to one embodiment of the present invention, a system for accessing protected content includes a first computing device with at least one processor. The system determines one or more users associated with information required to access content of a protected document based on a set of rules. A request is generated and sent to at least one second computing device associated with the one or more determined users to retrieve and utilize the required information to access the content of the protected document. Embodiments of the present invention further include a method and computer program product for accessing protected content in substantially the same manner described above.

Growing community of inventors

Weil im Schonbuch, Germany

Philipp Hoffmann