Two-party cooperative blind signature based on SM2
SM2, issued by China in 2010, is a public key cryptography standard based on elliptic curves.It has been widely used in finance, social security and other fields thanks to its advantages of improved signature efficiency, decreased storage space and computing complexity than RSA.With the popularizati...
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| Format: | Article |
| Language: | English |
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POSTS&TELECOM PRESS Co., LTD
2022-12-01
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| Series: | 网络与信息安全学报 |
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| Online Access: | http://www.cjnis.com.cn/thesisDetails#10.11959/j.issn.2096-109x.2022081 |
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| _version_ | 1841529729629290496 |
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| author | Xue BAI Baodong QIN Rui GUO Dong ZHENG |
| author_facet | Xue BAI Baodong QIN Rui GUO Dong ZHENG |
| author_sort | Xue BAI |
| collection | DOAJ |
| description | SM2, issued by China in 2010, is a public key cryptography standard based on elliptic curves.It has been widely used in finance, social security and other fields thanks to its advantages of improved signature efficiency, decreased storage space and computing complexity than RSA.With the popularization and application of SM2, the issues of its key security and data privacy are of great concern.The single-key mode inhibits the potential application in multi-user settings, and the leakage of the key will threaten the security of the entire cryptosystem due to the centralization.The problem of secure storage and reasonable utilization of keys needs to be solved urgently.In addition, the SM2 digital signature algorithm cannot guarantee the message privacy.Aiming at the issues of key security and data privacy of the signature algorithm, many researchers have proposed the idea of cooperative signature and blind signature for SM2.However, there isn’t SM2 collaborative blind signature scheme proposed.Then a two-party cooperative blind signing protocol based on SM2 was proposed in this paper, which allowed two parties to sign except the user.The signing process did not require recovering the complete private key, while not revealing the information of the partial private key and secret number.The key was stored separately to improve the security of the key, while the blind signature protected the privacy of the message.In terms of security, the protocol satisfied unforgeability and unlinkability.The protocol was implemented using C to demonstrate the efficiency of each participant’s local operation.In the honest model, the time cost of each entity in the cooperative signature phase was similar as that of executing a lightweight SM2 blind signature.Overall, the proposed protocol has certain advantages in terms of function and efficiency. |
| format | Article |
| id | doaj-art-ac747488b74f422dbbe7d36655ee0741 |
| institution | Kabale University |
| issn | 2096-109X |
| language | English |
| publishDate | 2022-12-01 |
| publisher | POSTS&TELECOM PRESS Co., LTD |
| record_format | Article |
| series | 网络与信息安全学报 |
| spelling | doaj-art-ac747488b74f422dbbe7d36655ee07412025-01-15T03:16:01ZengPOSTS&TELECOM PRESS Co., LTD网络与信息安全学报2096-109X2022-12-018395159574174Two-party cooperative blind signature based on SM2Xue BAIBaodong QINRui GUODong ZHENGSM2, issued by China in 2010, is a public key cryptography standard based on elliptic curves.It has been widely used in finance, social security and other fields thanks to its advantages of improved signature efficiency, decreased storage space and computing complexity than RSA.With the popularization and application of SM2, the issues of its key security and data privacy are of great concern.The single-key mode inhibits the potential application in multi-user settings, and the leakage of the key will threaten the security of the entire cryptosystem due to the centralization.The problem of secure storage and reasonable utilization of keys needs to be solved urgently.In addition, the SM2 digital signature algorithm cannot guarantee the message privacy.Aiming at the issues of key security and data privacy of the signature algorithm, many researchers have proposed the idea of cooperative signature and blind signature for SM2.However, there isn’t SM2 collaborative blind signature scheme proposed.Then a two-party cooperative blind signing protocol based on SM2 was proposed in this paper, which allowed two parties to sign except the user.The signing process did not require recovering the complete private key, while not revealing the information of the partial private key and secret number.The key was stored separately to improve the security of the key, while the blind signature protected the privacy of the message.In terms of security, the protocol satisfied unforgeability and unlinkability.The protocol was implemented using C to demonstrate the efficiency of each participant’s local operation.In the honest model, the time cost of each entity in the cooperative signature phase was similar as that of executing a lightweight SM2 blind signature.Overall, the proposed protocol has certain advantages in terms of function and efficiency.http://www.cjnis.com.cn/thesisDetails#10.11959/j.issn.2096-109x.2022081SM2two-party blind signaturekey securityprivacy protection |
| spellingShingle | Xue BAI Baodong QIN Rui GUO Dong ZHENG Two-party cooperative blind signature based on SM2 网络与信息安全学报 SM2 two-party blind signature key security privacy protection |
| title | Two-party cooperative blind signature based on SM2 |
| title_full | Two-party cooperative blind signature based on SM2 |
| title_fullStr | Two-party cooperative blind signature based on SM2 |
| title_full_unstemmed | Two-party cooperative blind signature based on SM2 |
| title_short | Two-party cooperative blind signature based on SM2 |
| title_sort | two party cooperative blind signature based on sm2 |
| topic | SM2 two-party blind signature key security privacy protection |
| url | http://www.cjnis.com.cn/thesisDetails#10.11959/j.issn.2096-109x.2022081 |
| work_keys_str_mv | AT xuebai twopartycooperativeblindsignaturebasedonsm2 AT baodongqin twopartycooperativeblindsignaturebasedonsm2 AT ruiguo twopartycooperativeblindsignaturebasedonsm2 AT dongzheng twopartycooperativeblindsignaturebasedonsm2 |