Patents by Inventor William C. Conklin

William C. Conklin 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).

  • Encrypted file system mechanisms
    Patent number: 8107621
    Abstract: Mechanisms for providing an encrypted file system are provided. The mechanisms use a combination of encryption methodologies so as to reduce the amount of decryption and re-encryption that is necessary to a file in the Encrypted File System in the event that the file needs to be modified. The encryption methodologies are interleaved, or alternated, with regard to each block of plaintext. In one illustrative embodiment, Plaintext Block Chaining (PBC) and Cipher Block Chaining (CBC) encryption methodologies are alternated for encrypting a sequence of blocks of data. The encryption of a block of plaintext is dependent upon the plaintext or a cipher generated for the plaintext of a previous block of data in the sequence of blocks of data so that the encryption is more secure than known Electronic Code Book encryption methodologies.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: January 31, 2012
    Assignee: International Business Machines Corporation
    Inventors: Ufuk Celikkan, William C. Conklin, Shawn P. Mullen, Ravi A. Shankar
  • Encryption Apparatus and Method for Providing an Encrypted File System
    Publication number: 20080310624
    Abstract: An encryption apparatus and method for providing an encrypted file system are provided. The encryption apparatus and method of the illustrative embodiments uses a combination of encryption methodologies so as to reduce the amount of decryption and re-encryption that is necessary to a file in the Encrypted File System in the event that the file needs to be modified. The encryption methodologies are interleaved, or alternated, with regard to each block of plaintext. In one illustrative embodiment, Plaintext Block Chaining (PBC) and Cipher Block Chaining (CBC) encryption methodologies are alternated for encrypting a sequence of blocks of data. The encryption of a block of plaintext is dependent upon the plaintext or a cipher generated for the plaintext of a previous block of data in the sequence of blocks of data so that the encryption is more secure than known Electronic Code Book encryption methodologies.
    Type: Application
    Filed: August 20, 2008
    Publication date: December 18, 2008
    Applicant: International Business Machines Corporation
    Inventors: Ufuk Celikkan, William C. Conklin, Shawn P. Mullen, Ravi A. Shankar
  • Encryption apparatus and method for providing an encrypted file system
    Patent number: 7428306
    Abstract: An encryption apparatus and method for providing an encrypted file system are provided. The encryption apparatus and method of the illustrative embodiments uses a combination of encryption methodologies so as to reduce the amount of decryption and re-encryption that is necessary to a file in the Encrypted File System in the event that the file needs to be modified. The encryption methodologies are interleaved, or alternated, with regard to each block of plaintext. In one illustrative embodiment, Plaintext Block Chaining (PBC) and Cipher Block Chaining (CBC) encryption methodologies are alternated for encrypting a sequence of blocks of data. The encryption of a block of plaintext is dependent upon the plaintext or a cipher generated for the plaintext of a previous block of data in the sequence of blocks of data so that the encryption is more secure than known Electronic Code Book encryption methodologies.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: September 23, 2008
    Assignee: International Business Machines Corporation
    Inventors: Ufuk Celikkan, William C. Conklin, Shawn P. Mullen, Ravi A. Shankar