CA2404161A1 - Verifiable, secret shuffles of encrypted data, such as elgamal encrypteddata for secure multi-authority elections - Google Patents

Verifiable, secret shuffles of encrypted data, such as elgamal encrypteddata for secure multi-authority elections Download PDF

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Publication number
CA2404161A1
CA2404161A1 CA002404161A CA2404161A CA2404161A1 CA 2404161 A1 CA2404161 A1 CA 2404161A1 CA 002404161 A CA002404161 A CA 002404161A CA 2404161 A CA2404161 A CA 2404161A CA 2404161 A1 CA2404161 A1 CA 2404161A1
Authority
CA
Canada
Prior art keywords
elgamal
encrypteddata
verifiable
encrypted data
secure multi
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002404161A
Other languages
French (fr)
Other versions
CA2404161C (en
Inventor
C. Andrew Neff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Demoxi Inc
Original Assignee
Votehere, Inc.
C. Andrew Neff
Dategrity Corporation
Demoxi Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Votehere, Inc., C. Andrew Neff, Dategrity Corporation, Demoxi Inc. filed Critical Votehere, Inc.
Priority to CA002550259A priority Critical patent/CA2550259A1/en
Publication of CA2404161A1 publication Critical patent/CA2404161A1/en
Application granted granted Critical
Publication of CA2404161C publication Critical patent/CA2404161C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/321Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving a third party or a trusted authority
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/006Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols involving public key infrastructure [PKI] trust models
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/14Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using a plurality of keys or algorithms
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/30Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
    • H04L9/3006Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy underlying computational problems or public-key parameters
    • H04L9/3013Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy underlying computational problems or public-key parameters involving the discrete logarithm problem, e.g. ElGamal or Diffie-Hellman systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/30Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
    • H04L9/3066Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy involving algebraic varieties, e.g. elliptic or hyper-elliptic curves
    • H04L9/3073Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy involving algebraic varieties, e.g. elliptic or hyper-elliptic curves involving pairings, e.g. identity based encryption [IBE], bilinear mappings or bilinear pairings, e.g. Weil or Tate pairing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3218Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using proof of knowledge, e.g. Fiat-Shamir, GQ, Schnorr, ornon-interactive zero-knowledge proofs
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/42Anonymization, e.g. involving pseudonyms
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/46Secure multiparty computation, e.g. millionaire problem
    • H04L2209/463Electronic voting
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/60Digital content management, e.g. content distribution

Abstract

A cryptographic process permits one to verifiably shuffle a series of input data elements. One or more authorities or individuals "shuffle", or "anonymize" the input data (e.g. public keys in discrete log form or ElGamal encrypted ballot data). The process includes a validity construction that prevents any one or more of the authorities or individuals from making any changes to the original data without being discovered by anyone auditing a resulting proof transcipt. The shuffling may be performed at various times. In the election example, the shuffling may be performed, e.g., after ballots are collected or during the registration, or ballot request phase of the election, thereby anonymizing the identities of the voters.
CA002404161A 2000-03-24 2001-03-24 Verifiable, secret shuffles of encrypted data, such as elgamal encrypteddata for secure multi-authority elections Expired - Fee Related CA2404161C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002550259A CA2550259A1 (en) 2000-03-24 2001-03-24 Verifiable, secret shuffles of encrypted data, such as elgamal encrypted data for secure multi-authority elections

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US19178500P 2000-03-24 2000-03-24
US60/191,785 2000-03-24
US25237600P 2000-11-21 2000-11-21
US60/252,376 2000-11-21
US26855101P 2001-02-14 2001-02-14
US60/268,551 2001-02-14
PCT/US2001/009550 WO2001073694A2 (en) 2000-03-24 2001-03-24 Verifiable, secret shuffles of encrypted data, such as elgamal encrypted data for secure multi-authority elections

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA002550259A Division CA2550259A1 (en) 2000-03-24 2001-03-24 Verifiable, secret shuffles of encrypted data, such as elgamal encrypted data for secure multi-authority elections

Publications (2)

Publication Number Publication Date
CA2404161A1 true CA2404161A1 (en) 2001-10-04
CA2404161C CA2404161C (en) 2006-05-23

Family

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Family Applications (1)

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CA002404161A Expired - Fee Related CA2404161C (en) 2000-03-24 2001-03-24 Verifiable, secret shuffles of encrypted data, such as elgamal encrypteddata for secure multi-authority elections

Country Status (10)

Country Link
US (1) US6950948B2 (en)
EP (1) EP1302020B1 (en)
JP (2) JP2003529256A (en)
AT (1) ATE309655T1 (en)
AU (1) AU2001250976A1 (en)
CA (1) CA2404161C (en)
DE (1) DE60114833T2 (en)
DK (1) DK1302020T3 (en)
ES (1) ES2251475T3 (en)
WO (1) WO2001073694A2 (en)

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Also Published As

Publication number Publication date
WO2001073694A2 (en) 2001-10-04
US20020007457A1 (en) 2002-01-17
WO2001073694A3 (en) 2003-02-06
JP2003529256A (en) 2003-09-30
DE60114833T2 (en) 2006-04-13
CA2404161C (en) 2006-05-23
DK1302020T3 (en) 2006-03-20
EP1302020B1 (en) 2005-11-09
ATE309655T1 (en) 2005-11-15
US6950948B2 (en) 2005-09-27
DE60114833D1 (en) 2005-12-15
AU2001250976A1 (en) 2001-10-08
JP2006115550A (en) 2006-04-27
EP1302020A2 (en) 2003-04-16
ES2251475T3 (en) 2006-05-01

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