Title:
アクセス制御用のパラメータ付きハッシュ関数
Document Type and Number:
Japanese Patent JP4087442
Kind Code:
B2
Abstract:
A method and apparatus for access control in a computer system are disclosed. A storage unit receives a block of data having an encrypted executable image and a signature component. A separation unit coupled to the storage unit separates the signature component from the encrypted executable image. A decryption unit coupled to the separation unit decrypts the encrypted executable image using the signature component as a key. This yields an decrypted executable program. An identification unit coupled to the decryption unit locates an identification mark in the decrypted executable program and identifies a composite key assigned to the identification mark. A signature generation unit coupled to the identification unit performs a keyed cryptographic hash algorithm on the decrypted executable program using the composite key as a key. A verification unit coupled to the signature generation unit compares the signature component with the computed keyed cryptographic hash value to verify the source of the block of data and to determine whether it has been modified. If the signature matches the keyed cryptographic hash value, a rights assignment unit coupled to the verification unit assigns appropriate access rights to the decrypted executable program and allows it to be executed by a computer system.
Inventors:
Oak Smith, David W
Knollase, Robert Shii
Knollase, Robert Shii
Application Number:
JP51025397A
Publication Date:
May 21, 2008
Filing Date:
July 19, 1996
Export Citation:
Assignee:
INTEL CORPORATION
International Classes:
G06F21/12; G06F1/00; G06F21/14; G09C1/00; H04L9/32
Domestic Patent References:
| JP6103058A | ||||
| JP6295286A | ||||
| JP5173892A | ||||
| JP7162407A | ||||
| JP8022390A | ||||
| JP4100147A |
Foreign References:
| US5052040 | ||||
| US5412718 |
Attorney, Agent or Firm:
Masaki Yamakawa
Hiroro Kurokawa
Masayuki Konno
Osamu Nishiyama
Jiro Suzuki
Hiroro Kurokawa
Masayuki Konno
Osamu Nishiyama
Jiro Suzuki