CN110535655A - A kind of new RSA Proxy Signature method - Google Patents

A kind of new RSA Proxy Signature method Download PDF

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Publication number
CN110535655A
CN110535655A CN201910669086.XA CN201910669086A CN110535655A CN 110535655 A CN110535655 A CN 110535655A CN 201910669086 A CN201910669086 A CN 201910669086A CN 110535655 A CN110535655 A CN 110535655A
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China
Prior art keywords
signature
message
bob
alice
proxy signature
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CN201910669086.XA
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Chinese (zh)
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CN110535655B (en
Inventor
李凤银
王东风
李清华
王伊蕾
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Hangzhou Houquantum Cryptography Technology Co ltd
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Qufu Normal University
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Priority to CN201910669086.XA priority Critical patent/CN110535655B/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic 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
    • H04L9/3247—Cryptographic 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 digital signatures
    • H04L9/3249—Cryptographic 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 digital signatures using RSA or related signature schemes, e.g. Rabin scheme
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic 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
    • H04L9/3247—Cryptographic 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 digital signatures
    • H04L9/3257—Cryptographic 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 digital signatures using blind signatures

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Storage Device Security (AREA)

Abstract

The invention discloses a kind of new RSA Proxy Signature methods, it is intended to realize the protection of privacy-sensitive data in electronic contract signature in network trading.It is characterized in that, information owner Alice will need the message signed to blind, signer Bob carries out Proxy Signature to the message blinded, and Alice casts off illiteracy to the message after Bob Proxy Signature, finally completes last signature verification by random third-party authentication person Minter.This method realizes unforgeable and blind property with correctness and while safety, suitable for the privacy-sensitive information protection during electronic contract signature.

Description

A kind of new RSA Proxy Signature method
Technical field
The invention belongs to field of information security technology, it is related to the Proxy Signature method based on RSA Algorithm.
Background technique
Digital signature can ensure data integrity, be widely used in the fields such as military affairs, commercial affairs, finance.In certain scenes Under, the message of signature both needs to meet real reliability, meets its anonymity again.In traditional digital signature, signer It can check the details of message, be not suitable for the fields such as electronic contract justice signature.Proxy Signature refers to that signer can not check needs The details of signature file, and only go to fulfil this specific operation of signing, to achieve the purpose that signature comes into force.
Proxy Signature not only needs to retain each category feature of digital signature, it is also necessary to have blind property and anonymity controlled.Blind property Refer to that signer can't see the content of signature information；Untraceable refers to that signer the signature of oneself and can not will be signed message It is associated, therefore the owner of message can not be tracked.In order to make existing signature agreement that there is the particularity of Proxy Signature Matter, related scholar have devised some blind signature schemes.Proxy Signature agreement has advantage very much, but simultaneously there is also some problems, Such as: how Proxy Signature and other signature schemes closely to be combined, is allowed to efficiency and safety is improved.Being exactly herein will Traditional RSA algorithm has devised a kind of new RSA Proxy Signature method in conjunction with Proxy Signature.
Summary of the invention
The object of the present invention is to provide a kind of new RSA Proxy Signature method, blind, Proxy Signature, cast off illiteracy comprising signature information, Signature authentication and etc., detailed process is as follows:
1) the signer Bob for participating in Proxy Signature selects security parameter according to RSA Algorithm, calculates oneself public key (e, n) and private key D, while announcing the one-way hash function algorithm of a safety
2) Alice is to message to be signedChoose two random numbersWithIt is blinded, is blinded Message m1, and by m1Bob is issued, while calculating the cryptographic Hash H of outbound message, and disclose this cryptographic Hash, convenient for open verifying；
3) Bob receives message m1Afterwards, Proxy Signature is carried out to message, obtains t1, and t1 is sent to Alice；
4) it after Alice receives the Proxy Signature t1 of Bob, casts off illiteracy, calculates S, obtain the signature S for casting off illiteracy later；
5) for accidental validation person Minter triple (S, H, e) as inputting, whether verifying following equation is true
Se=H
If so, then indicate signature verification success；Otherwise signature verification fails.Wherein e, H are disclosed parameters, and S is commonly to sign Name.
The present invention realizes unforgeable and blind property, has reached following effect with correctness and while safety Fruit: after blinding, the message for needing to sign be for signer it is transparent, signer can not know the inside it is specific in Hold, other users can not also learn the details of contract.It can be used for the signature of secret protection justice contract.
Detailed description of the invention
The Proxy Signature process of new RSA Proxy Signature algorithm is described in detail in Fig. 1.
Specific embodiment
(1) the signer Bob for participating in Proxy Signature selects security parameter according to RSA Algorithm, calculate oneself public key (e, n) and Private key d, while announcing the one-way hash function algorithm of a safety
(1.1) Bob randomly selects two Big primes p, q, calculates n=p*q, calculates Euler's function value φ (n)=(p-1) * of n (q-1)；
(1.2) Bob randomly selects integer e one big, so that (e, φ (n))=1；
(1.3) according to Extended Euclidean Algorithm, private key d is calculated, is allowed to meet ed=1mod (φ (n)).
(2) Alice chooses information to be signed and signs:
(2.1) Alice chooses message to be signedAnd two different random numbers
(2.2) Alice calculates m1=r1 aeH (m) blinds information m, and by m1Issue Bob；
(2.3) Alice calculates H=h (m) modn.Open H, convenient for open verifying；
(3) Bob carries out Proxy Signature to the information sent from Alice:
Bob receives m1Afterwards, t is calculated1=m1 dModn, δpves=t1For Proxy Signature；
(4) Alice carries out processing of casting off illiteracy to Proxy Signature information:
Alice receives the δ of BobpvesIt casts off illiteracy, calculatesBob is obtained to the common signature S of message m；
(5) accidental validation person Minter carries out signature authentication, judges whether signature is correct:
For accidental validation person Minter triple (S, H, e) as inputting, whether verifying following equation is true
Se=H
If so, then indicate signature verification success；Otherwise signature verification fails.Wherein e, H are disclosed parameters, and S is commonly to sign Name.

Claims (1)

1. a kind of new RSA Proxy Signature method, detailed process is as follows:
Step 1: the signer Bob for participating in Proxy Signature selects security parameter according to RSA Algorithm, calculate oneself public key (e, n) and Private key d, while announcing the individual event hash algorithm of a safety
Step 2: Alice is to message to be signedSelect two random numbersWithIt is blinded, is obtained To blinding message m1, and by m1Bob is issued, while calculating the cryptographic Hash H of outbound message, and disclose this cryptographic Hash, is tested convenient for open Card；
Step 3: Bob receives message m1Afterwards, Proxy Signature is carried out to message, obtains t1, and by t1It is sent to Alice；
Step 4: Alice receives the Proxy Signature t of Bob1Afterwards, it casts off illiteracy, calculates S, obtain the signature S for casting off illiteracy later；
It is inputted step 5: accidental validation person Minter is used as triple (S, H, e), whether verifying following equation is true:
Se=H
If so, then indicate signature verification success；Otherwise signature verification fails；Wherein e, H are disclosed parameters, and S is commonly to sign Name.
CN201910669086.XA 2019-07-24 2019-07-24 Novel RSA blind signature method Active CN110535655B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910669086.XA CN110535655B (en) 2019-07-24 2019-07-24 Novel RSA blind signature method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910669086.XA CN110535655B (en) 2019-07-24 2019-07-24 Novel RSA blind signature method

Publications (2)

Publication Number Publication Date
CN110535655A true CN110535655A (en) 2019-12-03
CN110535655B CN110535655B (en) 2022-04-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112202566A (en) * 2020-09-24 2021-01-08 杭州天谷信息科技有限公司 Method for guaranteeing block chain electronic signature privacy

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101378316A (en) * 2007-08-29 2009-03-04 索尼（中国）有限公司 Proxy blind signing system and method based on identification

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101378316A (en) * 2007-08-29 2009-03-04 索尼（中国）有限公司 Proxy blind signing system and method based on identification

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
李萍等: "《一种基于RSA密码体制的盲签名方案》", 《信息安全与通信保密》 *
连铁艳等: "《基于 RSA 密码体制的不可跟踪盲签名方案》", 《河南师范大学学报(自然科学版)》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112202566A (en) * 2020-09-24 2021-01-08 杭州天谷信息科技有限公司 Method for guaranteeing block chain electronic signature privacy
CN112202566B (en) * 2020-09-24 2023-07-25 杭州天谷信息科技有限公司 Method for guaranteeing privacy of blockchain electronic signature

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Address after: 311100 Room 1005-32, 10th Floor, Building H, Haichuang Park, CEC Haikang Group Co., Ltd., No. 198, Aicheng Street, Wuchang Street, Yuhang District, Hangzhou City, Zhejiang Province

Patentee after: Hangzhou Houquantum Cryptography Technology Co.,Ltd.

Address before: 273165 Jingxuan West Road, Qufu City, Jining, Shandong Province, No. 57

Patentee before: QUFU NORMAL University

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