Attribute-Based Digital Signature System

L. Ibraimi (Inventor), Muhammad Asim (Inventor), M. Petkovic (Inventor)

Research output: Patent

10 Downloads (Pure)

Abstract

An attribute-based digital signature system comprises a signature generation unit (1) for signing a message (m) by generating a signature (s) based on a user secret key (SK) associated with a set of user attributes, wherein the signature generation unit (1) is arranged for combining the user secret key (SK) with revocation data (R) to form at least part of the signature (s), wherein the revocation data (R) complements respective ones of a plurality of valid user secret keys and wherein the revocation data (R) prevents a revoked user secret key (SK) from being used to validly sign a message (m) with the set of user attributes. The system further comprises a revocation unit (2) for selectively removing at least part of the signing capability of a to-be-revoked user secret key (SK), by generating updated revocation data (R), wherein the updated revocation data (R) is based on at least part of the to-be-revoked user secret key (SK). A plurality of attribute authorities 301 may independently issue cryptographic keys.
Original languageUndefined
Patent numberWO2011145011
Priority date24/11/11
Publication statusSubmitted - 24 Nov 2011

Keywords

  • EWI-21876
  • Ciphertext
  • IR-80419
  • Encryption
  • METIS-286364
  • Attribute

Cite this

Ibraimi, L., Asim, M., & Petkovic, M. (2011). Attribute-Based Digital Signature System. Manuscript submitted for publication. (Patent No. WO2011145011).
Ibraimi, L. (Inventor) ; Asim, Muhammad (Inventor) ; Petkovic, M. (Inventor). / Attribute-Based Digital Signature System. Patent No.: WO2011145011.
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title = "Attribute-Based Digital Signature System",
abstract = "An attribute-based digital signature system comprises a signature generation unit (1) for signing a message (m) by generating a signature (s) based on a user secret key (SK) associated with a set of user attributes, wherein the signature generation unit (1) is arranged for combining the user secret key (SK) with revocation data (R) to form at least part of the signature (s), wherein the revocation data (R) complements respective ones of a plurality of valid user secret keys and wherein the revocation data (R) prevents a revoked user secret key (SK) from being used to validly sign a message (m) with the set of user attributes. The system further comprises a revocation unit (2) for selectively removing at least part of the signing capability of a to-be-revoked user secret key (SK), by generating updated revocation data (R), wherein the updated revocation data (R) is based on at least part of the to-be-revoked user secret key (SK). A plurality of attribute authorities 301 may independently issue cryptographic keys.",
keywords = "EWI-21876, Ciphertext, IR-80419, Encryption, METIS-286364, Attribute",
author = "L. Ibraimi and Muhammad Asim and M. Petkovic",
note = "eemcs-eprint-21876 ; WO2011145011",
year = "2011",
month = "11",
day = "24",
language = "Undefined",
type = "Patent",

}

Ibraimi, L, Asim, M & Petkovic, M 2011, Attribute-Based Digital Signature System, Patent No. WO2011145011.

Attribute-Based Digital Signature System. / Ibraimi, L. (Inventor); Asim, Muhammad (Inventor); Petkovic, M. (Inventor).

Patent No.: WO2011145011.

Research output: Patent

TY - PAT

T1 - Attribute-Based Digital Signature System

AU - Ibraimi, L.

AU - Asim, Muhammad

AU - Petkovic, M.

N1 - eemcs-eprint-21876

PY - 2011/11/24

Y1 - 2011/11/24

N2 - An attribute-based digital signature system comprises a signature generation unit (1) for signing a message (m) by generating a signature (s) based on a user secret key (SK) associated with a set of user attributes, wherein the signature generation unit (1) is arranged for combining the user secret key (SK) with revocation data (R) to form at least part of the signature (s), wherein the revocation data (R) complements respective ones of a plurality of valid user secret keys and wherein the revocation data (R) prevents a revoked user secret key (SK) from being used to validly sign a message (m) with the set of user attributes. The system further comprises a revocation unit (2) for selectively removing at least part of the signing capability of a to-be-revoked user secret key (SK), by generating updated revocation data (R), wherein the updated revocation data (R) is based on at least part of the to-be-revoked user secret key (SK). A plurality of attribute authorities 301 may independently issue cryptographic keys.

AB - An attribute-based digital signature system comprises a signature generation unit (1) for signing a message (m) by generating a signature (s) based on a user secret key (SK) associated with a set of user attributes, wherein the signature generation unit (1) is arranged for combining the user secret key (SK) with revocation data (R) to form at least part of the signature (s), wherein the revocation data (R) complements respective ones of a plurality of valid user secret keys and wherein the revocation data (R) prevents a revoked user secret key (SK) from being used to validly sign a message (m) with the set of user attributes. The system further comprises a revocation unit (2) for selectively removing at least part of the signing capability of a to-be-revoked user secret key (SK), by generating updated revocation data (R), wherein the updated revocation data (R) is based on at least part of the to-be-revoked user secret key (SK). A plurality of attribute authorities 301 may independently issue cryptographic keys.

KW - EWI-21876

KW - Ciphertext

KW - IR-80419

KW - Encryption

KW - METIS-286364

KW - Attribute

M3 - Patent

M1 - WO2011145011

ER -

Ibraimi L, Asim M, Petkovic M, inventors. Attribute-Based Digital Signature System. WO2011145011. 2011 Nov 24.