Zhenfu Cao, PhD, Professor

Department of Computer Science and Engineering, Shanghai Jiao Tong University (SJTU)

photo

Education:
    BSc, PhD (Harbin Institue of Technology)

Research Interests:
    Number Theory
    Cryptography
    Trusted Computing
    Trusted Network
    Information Security

Tel:
    +86-21-34205345

Email:
    zfcao@cs.sjtu.edu.cn; zfcao@sjtu.edu.cn

Address:
    Department of Computer Science and Engineering,
    Shanghai Jiao Tong University,
    800 Dongchuan Rd., Shanghai 200240, China


Biography


Zhenfu Cao is a distinguished professor and director of Trusted Digital Technology Laboratory at Shanghai Jiao Tong University. He also serves as a member of expert panel of National Nature Science Fund of China.

Prof. Cao joined the Department of Computer Science and Engineering of Shanghai Jiao Tong University and found the Trusted Digital Technology Lab in Jan, 2002. He earned his bachelor degree in computer science and technology from Harbin Institute of Technology in 1983, then he joined as a lecturer at the same year, was exceptionally promoted to Associate Professor in 1987 and became a professor in 1991. Then he completed his Ph.D. thesis in 1999 and became a doctoral supervisor in the next year.

Prof. Cao has been invited to University of Tsukuba (Japan), National Institute of Information and Communications Technology (NICT, Japan), Hong Kong Baptist University, Chinese University of Hong Kong, Hong Kong University of Science and Technology, and National Chiao Tung University in Taiwan for academic activities.

In 1981, he began to publish academic papers. His papers appeared in Chinese Science Bulletin in 1985 and Proceedings of the American Mathematic Society in 1986. Up to now (1981 - 2008), more than 300 academic papers have been published in Journals or conferences, among which more than 110 are cited by SCI and 150 by EI. Also, he has 20 Chinese patents, 4 International and USA patents filed. He has been invited to give keynote / invited / tutorial lectures for more than 40 times in prestigious universities and academic institutes. He had directed more than 40 research projects at national or provincial levels, six of which were supported by National Natural Science Foundation of China. He became a reviewer of Mathematical Reviews since 1988 and Zentralblatt fur Mathematik since 1991 and has published 200 reviews till now. As the first author or single author, he won the first prize of Natural Science award by Ministry of Education of China and other six provincial or ministerial prizes. He has received a number of awards, including the Youth Research Fund Awarded of Chinese Academy of Science (1986), Ying-Tung Fok Young Teacher Award (1989), the First Ten Outstanding Youth in Harbin (1996), the National Outstanding Youth Fund of China (2002), Guangqi Xu Gold Award for science and technology (2003), IT Elitist of East China (2004), Special Allowance by the State Council (2005), the Co-recipient of IEEE ICC'07 - Computer and Communications Security Symposium Best Paper Award (2007).

Prof. Cao is actively involved in the academic community, serving as committee / session chair, and program committee member in some international conference committees as follows: Besides, Prof. Cao is the program committee co-chair of China National Computer Conference and committee chair of Information Security and Trusted Computing in 2005. He is also the program committee member or co-chair of Chinese Cryptologic Research Conference (Chinacrypto) which has been held from 1994 to 2008.

He is also the associate editor of Computers & Security (Elsevier), Editorial Board member of Peer-to-Peer Networking and Applications (Springer-Verlag), and guest editor of Special Issue on Wireless Network Security, Wireless Communications and Mobile Computing (John Wiley), etc.


Publications (All Publications since 2002)

Selected Journal Papers (since 1985)

  1. Zhenfu Cao. Universal encrypted deniable authentication protocol. International Journal of Network Security, 8(2), 151-158, 2009.
  2. Xiaolei Dong, Haifeng Qian, and Zhenfu Cao. Provably secure RSA-type signature based on conic curve. Wireless Communications and Mobile Computing, 9(2), 217-225, 2009.
  3. Xiaolei Dong and Zhenfu Cao. Z_N - trees and public-key cryptosystems. Discrete Mathematics, to appear.
  4. Shengbao Wang, Zhenfu Cao, Zhaohui Cheng, and Kim-Kwang Raymond Choo. Perfect forward secure identity-based authenticated key agreement protocol in the escrow mode, Science in China Series F, 52(8), 1358-1370, 2009.
  5. Peng Zeng, Zhenfu Cao, Kim-Kwang Raymond Choo, and Shengbao Wang. On the Anonymity of Some Authentication Schemes for Wireless Communications, IEEE Communications Letters, 13(3), 170-171, 2009.
  6. Hai Huang and Zhenfu Cao. A Novel and Efficient Unlinkable Secret Handshakes Scheme, IEEE Communications Letters, 13(5), 363-365, 2009.
  7. Peng Zeng, Zhenfu Cao, Kim-Kwang Raymond Choo, and Shengbao Wang. Security Weakness in a Dynamic Program Update Protocol for Wireless Sensor Networks, IEEE Communications Letters, 13(6), 426-428, 2009.
  8. Feng Cao and Zhenfu Cao. A secure identity-based proxy multi-signature scheme, Information Sciences, 179(3), 292-302, 2009.
  9. Shengbao Wang, Zhenfu Cao, Kim-Kwang Raymond Choo, and Lihua Wang. An improved identity-based key agreement protocol and its security proof, Information Sciences, 179(3), 307-318, 2009.
  10. Feng Cao and Zhenfu Cao. An identity based universal designated verifier signature scheme secure in the standard model, Journal of Systems and Software, 82(4), 643-649, 2009.
  11. Feng Cao and Zhenfu Cao. A secure identity-based multi-proxy signature scheme, Computers & Electrical Engineering, 35(1), 86-95, 2009.
  12. Piyi Yang, Zhenfu Cao, and Xiaolei Dong. Efficient Certificateless Threshold Signatures without Random Oracles, Journal of Systems Science and Complexity, to appear.
  13. Piyi Yang, Zhenfu Cao, and Xiaolei Dong. Threshold Proxy Re-Signature. Journal of Systems Science and Complexity, to appear.
  14. Jun Shao, Zhenfu Cao, and Peng Liu. SCCR: A Generic Approach to Simultaneously Achieving CCA Security and Collusion-Resistance in Proxy Re-encryption, Security and Communication Networks, to appear.
  15. Qin Wang, Zhenfu Cao, and Shengbao Wang. Formailzed security model of multi-proxy signature schemes, International Journal of Pervasive Computing and Communications, to appear.
  16. Zhenfu Cao, Chuan I Chu, and Wai Chee Shiu. The exponontial Diophantine equation $AX^2 + BY^2 = \lambda K^Z$ and its applications, Taiwanese Journal of Mathematics, 12(5), 1015-1034, 2008.
  17. Xiaolei Dong, Zhenfu Cao, and Licheng Wang. New designing of cryptosystems based on quadratic fields, Science in China Series F, 51(8), 1106-1116, 2008.
  18. Rongxing Lu, Xiaolei Dong, and Zhenfu Cao. Designing efficient proxy signature schemes for mobile communication, Science in China Series F, 51 (2), 183-195, 2008.
  19. Shengbao Wang, Zhenfu Cao, Maurizio Adriano Strangio, and Lihua Wang. Cryptanalysis and improvement of an elliptic curve Diffie-Hellman key agreement protocol, IEEE Communications Letters, 12(2), 149-151, 2008.
  20. Xiaodong Lin, Rongxing Lu, Pin-Han Ho, Xuemin(Sherman) Shen, and Zhenfu Cao. TUA: A novel compromise-resilient authentication architecture for wireless mesh networks, IEEE Transactions on Wireless Communications, 7(4), 1389-1399, 2008.
  21. Rongxing Lu, Xiaodong Lin, Zhenfu Cao, Jun Shao, and Xiaohui Liang. New (t, n) threshold directed signature scheme with provable security, Information Sciences, 178 (3), 756-765, 2008.
  22. Xiaohui Liang, Zhenfu Cao, Rongxing Lu, and Liuquan Qin. Efficient and secure protocol in fair document exchange, Computer Standards & Interfaces, 30 (3), 167-176, MAR 2008.
  23. Licheng Wang, Zhenfu Cao, Feng Cao. Haifeng Qian and Haiyong Bao. Biased bit commitment and applications, Journal of Information Science and Engineering, 24(2), 441-452, 2008.
  24. Rongxing Lu, Xiaodong Lin, Zhenfu Cao, Liuquan Qin, and Xiaohui Liang. A simple deniable authentication protocol based on the Diffie-Hellman algorithm, International Journal of Computer Mathematics, 85(9), 1315-1323, 2008.
  25. Dazhi Sun and Zhenfu Cao. New cryptanalysis paradigm on a nonce-based mutual authentication scheme, International Journal of Network Security, 6(1), 116-120, 2008.
  26. Shengbao Wang, Zhenfu Cao, and Feng Cao. Efficient identity-based authenticated key agreement with PKG forward secrecy, International Journal of Network Security, 7(2), 181-186, 2008.
  27. Rongxing Lu, Zhenfu Cao, Zhenchuan Chai, and Xiaohui Liang. A simple user authentication scheme for grid computing, International Journal of Network Security, 7(2), 202-206, 2008.
  28. Shengbao Wang, Zhenfu Cao, and Haiyong Bao. Efficient certificateless authentication and key agreement (CL-AK) for grid computing, International Journal of Network Security, 7(3), 342-347, 2008.
  29. Xiaolei Dong, W. C. Shiu, C. I. Chu, and Zhenfu Cao. The simultaneous Pell equations $y^2 - Dz^2 = 1$ and $x^2 - 2Dz^2 = 1$, Acta Arithmetica, 126(2), 115-123, 2007.
  30. Rongxing Lu, Zhenfu Cao, and Xiaolei Dong. A new practical limited identity-based encryption scheme, Fundamenta Informaticae, 80(4), 461-474, 2007.
  31. Dazhi Sun, Jinpeng Huai, Jizhou Sun, Zhenfu Cao. An efficient modular exponentiation algorithm against simple power analysis attacks, IEEE Transactions on Consumer Electronics, 53 (4): 1718-1723, 2007.
  32. Licheng Wang, Zhenfu Cao, Xiangxue Li and Haifeng Qian. Simulatability and security of certificateless threshold signatures, Information Sciences, 177(6), 1382-1394, 2007.
  33. Yuan Zhou, Binxing Fang, Zhenfu Cao, Xiaochun Yun and Xiaoming Cheng. How to construct secure proxy cryptosystem, Information Sciences, 177(19), 4095-4108, 2007.
  34. Zhenchuan Chai, Zhenfu Cao, and Xiaolei Dong. Efficient ID-based multi-receiver threshold decryption, International Journal of Foundations of Computer Science, 18(5), 987-1004, 2007.
  35. Jun Shao, Zhenfu Cao, and Rongxing Lu. Improvement of Yang et al.'s threshold proxy signature scheme, Journal of Systems and Software, 80(2), 172–177, 2007.
  36. Qin Wang and Zhenfu Cao. Identity-based proxy multi-signature, Journal of Systems and Software, 80(7), 1023-1029, 2007.
  37. Rongxing Lu and Zhenfu Cao. Simple three-party key exchange protocol, Computers & Security, 26(1), 94-97, 2007.
  38. Zhenchuan Chai, Zhenfu Cao, and Rongxing Lu. Threshold password authentication against guessing attacks in Ad hoc networks, Ad Hoc Networks, 5(7), 1046–1054, 2007.
  39. Rongxing Lu, Zhenfu Cao, Licheng Wang, Congkai Sun. A secure anonymous routing protocol with authenticated key exchange for Ad hoc networks, Computer Standards & Interfaces, 29(5), 521-527, 2007.
  40. Rongxing Lu, Zhenfu Cao, and Haojin Zhu. An enhanced authenticated key agreement protocol for wireless mobile communication, Computer Standards & Interfaces, 29 (6), 647-652, 2007.
  41. Rongxing Lu and Zhenfu Cao. Erratum to "Non-interactive deniable authentication protocol based on factoring", Computer Standards & Interfaces, 29(2), Page 275, 2007.
  42. Rongxing Lu, Zhenfu Cao, Shengbao Wang, Haiyong Bao. A new ID-based deniable authentication protocol, Informatica, 18(1), 67-78, 2007.
  43. Zhenchuan Chai, Zhenfu Cao, and Xiaolei Dong. Identity-based signature scheme based on quadratic residues, Science in China Series F, 50(3), 373-380, 2007.
  44. Changxiang Shen, Huangguo Zhang, Dengguo Feng, Zhenfu Cao, Jiwu Huang. Survey of information security, Science in China Series F, 50 (3): 273-298, 2007.
  45. Zhenchuan Chai, Zhenfu Cao, and Yuan Zhou. Efficient ID-based multi-decrypter encryption with short ciphertexts, Journal of Computer Science and Technology, 22(1), 103-108, 2007.
  46. Rongxing Lu and Zhenfu Cao. Group oriented identity-based deniable authentication protocol from the bilinear pairings, International Journal of Network Security, 5(3), 283 - 287, 2007.
  47. Rongxing Lu Zhenfu Cao, and Jun Shao. On security of two nonrepudiable threshold multi-proxy multi-signature schemes with shared verification, International Journal of Network Security, 4(3), 248-253, 2007.
  48. Shengbao Wang, Zhenfu Cao and Feng Cao. More efficient identity-based authenticated key agreement with perfect forward secrecy, Journal of Information and Computational Science, 4(1), 317-323, 2007.
  49. Xuemin (Sherman) Shen, Chuang Lin, Yan (Lindsay) Sun, Jianping Pan, Peter Langendoerfer, Zhenfu Cao. Wireless network security, Wireless Communications and Mobile Computing, 6(3), 269-271, 2006.
  50. Zhenfu Cao, Gennian Ge and Ying Miao. Combinatorial Characterizations of One-Coincidence Frequency-Hopping Sequences, Designs Codes and Cryptography, 41(2), 177-184, 2006.
  51. Zhenfu Cao, Haojin Zhu, and Rongxing Lu. Provably Secure Robust Threshold Partial Blind Signature, Science in China Series F, 49(5), 604 - 615, 2006.
  52. Jun Shao, Zhenfu Cao, and Rongxing Lu. An Improved Deniable Authentication Protocol, Networks, 48(4), 179-181, 2006.
  53. Qingshui Xue and Zhenfu Cao. Factoring based proxy signature schemes, Journal of Computational and Applied Mathematics, 195(1-2), pp. 229 - 241, 2006.
  54. Rongxing Lu, Zhenfu Cao and Xiaolei Dong. Authenticated encryption protocol with perfect forward secrecy for mobile communication, Wireless Communications and Mobile Computing, 6 (3), 273-280, 2006.
  55. Jun Shao, Zhenfu Cao. A traceable threshold signature scheme with multiple signing policies, Computers & Security, 25(3), 201-206, 2006.
  56. Dazhi Sun, Zhenfu Cao and Yu Sun. How to compute modular exponentiation with large operators based on the right-to-left binary algorithm, Applied Mathematics and Computation, 176(1), 280-292, 2006.
  57. Lihua Wang, Zhenfu Cao, Takeshi Okamoto, Ying Miao, and Eiji Okamoto. Authorization-Limited Transformation-Free Proxy Cryptosystems and Their Security Analyses, IEICE Transactions on Fundamentals, E89-A, 106 -114, 2006.
  58. Rongxing Lu and Zhenfu Cao. Off-line Password Guessing Attack on An Efficient Key Agreement Protocol for Secure Authentication, International Journal of Network Security, 3 (1), 35-38, 2006
  59. Rongxing Lu and Zhenfu Cao. A Directed Signature Scheme Based on RSA Assumption, International Journal of Network Security, 2(3), 182-186, 2006.
  60. Zhenchuan Chai, Zhenfu Cao, and Rongxing Lu. A forward secure remote authentication based on factoring, Journal of Information and Computational Science, 3(3), 373-384, 2006.
  61. Qin Wang, Zhenfu Cao. A Secure Proxy Signcryption Scheme Based on Discrete Logarithm Problem, Journal of Information and Computational Science, 3(3), 567-574, 2006.
  62. Shengbao Wang, Zhenfu Cao and Xiaolei Dong. Certificateless Authenticated Key Agreement Based on the MTI/C0 Protocol, Journal of Information and Computational Science, 3(3), 575-582, 2006.
  63. Rongxing Lu and Zhenfu Cao. Efficient remote user authentication scheme using smart card, Computer Networks, 49 (4), 535-540, 2005.
  64. Haiyong Bao, Zhenfu Cao and Shengbao Wang. Remarks on Wu -Hsu's threshold signature scheme using self-certified public keys, Journal of Systems and Software, 78(1), 56-59, 2005.
  65. Rongxing Lu and Zhenfu Cao. Non-interactive deniable authentication protocol based on factoring, Computer Standards & Interfaces, 27 (4), 401-405, 2005.
  66. Kejun Chen, Zhenfu Cao and Ruizhong Wei. Super-simple balanced incomplete block designs with block size 4 and index 6, Journal of Statistical Planning and Inference, 133(2), 537-554, 2005.
  67. Rongxing Lu, Zhenfu Cao and Yuan Zhou. Threshold undeniable signature scheme based on conic, Applied Mathematics and Computation, 162 (1), 165-177, 2005.
  68. Yuan Zhou, Zhenfu Cao and Rongxing Lu. Provably secure proxy-protected signature schemes based on factoring, Applied Mathematics and Computation, 164(1), 83-98, 2005.
  69. Rongxing Lu, Zhenfu Cao and Yuan Zhou. Proxy blind multi-signature scheme without a secure channel, Applied Mathematics and Computation, 164 (1), 179 -187, 2005.
  70. Dazhi Sun, Zhenfu Cao, Yu Sun. Comment: cryptanalysis of Lee-Hwang-Li's key authentication scheme, Applied Mathematics and Computation, 164(3), 675-678, 2005.
  71. Rongxing Lu, Zhenfu Cao and Haojin Zhu. A robust (k, n) + 1 threshold proxy signature scheme based on factoring, Applied Mathematics and Computation, 166 (1), 35-45, 2005.
  72. Haifeng Qian, Zhenfu Cao and Haiyong Bao. Cryptanalysis of Li-Tzeng-Hwang's improved signature schemes based on factoring and discrete logarithms, Applied Mathematics and Computation, 166(3), 501-505, 2005.
  73. Dazhi Sun, Zhenfu Cao, Yu Sun. Remarks on a new key authentication scheme based on discrete logarithms, Applied Mathematics and Computation, 167(1), 572-575, 2005.
  74. Jun Shao and Zhenfu Cao. A new efficient (t, n) verifiable multi-secret sharing (VMSS) based on YCH scheme, Applied Mathematics and Computation, 168(1), 135 -140, 2005.
  75. Dazhi Sun, Zhenfu Cao. Improved public key authentication scheme for non-repudiation, Applied Mathematics and Computation, 168(2), 527 - 532, 2005.
  76. Rongxing Lu and Zhenfu Cao, A new deniable authentication protocol from bilinear pairings, Applied Mathematics and Computation, 168(2), 954 - 961, 2005.
  77. Rongxing Lu and Zhenfu Cao. Designated verifier proxy signature scheme with message recovery, Applied Mathematics and Computation, 169 (2), 1237-1246, 2005.
  78. Haiyong Bao, Zhenfu Cao and Rongxing Lu. Proxy signature scheme using self-certified public key, Applied Mathematics and Computation, 169(2), 1380 -1389, 2005.
  79. Haiyong Bao, Zhenfu Cao and Shengbao Wang. Improvement on Tzeng et al.'s nonrepudiable threshold multi-proxy multi-signature scheme with shared verification, Applied Mathematics and Computation, 169(2), 1419 -1430, 2005.
  80. Haifeng Qian, Zhenfu Cao and Haiyong Bao. Security of Pon-Lu-Jeng's Meta-He digital signature schemes, Applied Mathematics and Computation, 170(1), 724 - 730, 2005.
  81. Yu Long, Zhenfu Cao, Kefei Chen. A dynamic threshold commercial key escrow scheme based on conic, Applied Mathematics and Computation, 171 (2), 972 - 982, 2005.
  82. Qian Haifeng, Cao Zhenfu and Xue Qingshui. Efficient pairing-based threshold proxy signature scheme with known signers, Informatica, 16(2), 261 - 274, 2005.
  83. Dazhi Sun and Zhenfu Cao. Novel forgery method based on some password authentication schemes, Journal of Computational Information Systems, 1(3), 471 - 475, 2005.
  84. Kejun Chen, Zhenfu Cao and R Wei. Elementary Abelian Difference Families with Block Size ≤ 6, Bulletin of ICA, Vol. 43, 80 - 84, 2005.
  85. Kejun Chen, Zhenfu Cao and Ruizhong Wei. Existence of V(9, t) vectors, Journal of Combinatorial Mathematics and Combinatorial Computing, Vol. 55, 209 - 221, 2005.
  86. Kejun Chen, Zhenfu Cao and Dianhua Wu. Existence of APAV(q, k) with q a prime power ≡ 5 mod 8, Discrete Mathematics, 279(1-3), 153 - 161, 2004.
  87. Haifeng Qian, Zhenfu Cao, Qingshui Xue. A new threshold proxy signature scheme from bilinear pairings, Science in China Series F, 47(5), 612 - 622, 2004.
  88. Zhenfu Cao and Xiaolei Dong. An application of a lower bound for linear forms in two logarithms to the Terai-Jesmanowicz conjecture, Acta Arithmetica, 110 (2), 153 - 164, 2003.
  89. Jiguo Li, Zhenfu Cao and Yichen Zhang, Nonrepudiable proxy multi - signature schemes, Journal of Computer Science and Technology, 18(3), 399 - 402, 2003.
  90. Jiguo Li, Jianzhong Li, Zhenfu Cao and Yichen Zhang. Nonrepudiable threshold proxy signcryption scheme with known signers, Journal of Software, 14(12), 2029 - 2035, 2003.
  91. Zhenfu Cao, Xiaolei Dong and Zhong Li, A new conjecture concerning the Diophantine equation $x^2+b^y=c^z$, Proceedings of the Japan Academy Series A, 78A (10), 202 - 205, 2002.
  92. Zhenfu Cao, Xiaolei Dong, On the Terai-Jesmanowicz conjecture, Publicationes Mathematicae-Debrecen, 22, 1 - 13, 2002.
  93. Zhenfu Cao. A threshold key escrow scheme based on public key cryptosystem, Science in China (Series E), 44(4), 441-448, 2001.
  94. Xiaolei Dong and Zhenfu Cao. Diophantine equations and class number of real quadratic fields, Acta Arithmetica, 97(4), 313-328, 2001.
  95. Zhenfu Cao and Xiaolei Dong. The Diophantine equation $x^2 + b^y = c^z$, Proceedings of the Japan Academy Series A, 77A(1),1-4, 2001.
  96. Zhenfu Cao. On Whiteman’s and Storer’s difference sets, Journal of Statistical Planning and Inference, 94(2), 147-154, 2001.
  97. Y. Bugeaud, Zhenfu Cao and M. Mignotte. On simple $K_4$-groups, Journal of Algebra, 241(2), 658-668, 2001.
  98. Zhenfu Cao, József Sándor. On the diophantine equation $4^x + 18^y = 22^z$, Octogon Mathematical Magazine, 9(2), 937-938, 2001.
  99. Zhenfu Cao. On the Diophantine equation $x^p+2^{2m}=py^2$, Proceedings of the American Mathematical Society, 128(7), 1927-1931, 2000.
  100. Zhenfu Cao S. Mu and Xiaolei Dong. A new proof of a conjecture of Antoniadis, Journal of Number Theory, 83(2), 185-193, 2000.
  101. Zhenfu Cao. The multi-dimension RSA and its low exponent security, Science in China (Series E), 43(4), 349-354, 2000.
  102. Zhenfu Cao. A kind of Diophantine equations in finite simple groups, Northeast Math. J., 16(4), 391-397, 2000.
  103. Zhenfu Cao and Aleksander Grytczuk. Some remarks on Fermat’s equation in the set of matrices, Acta Academiae Paedagogicae Agriensis, 27, 39-46, 2000.
  104. Zhenfu Cao and A. Grytczuk. Some classes of Diophantine equations connected with McFarland's and Ma's conjectures, Discuss. Math.-General Algebra and Applications, 20(2), 193-198, 2000.
  105. Zhenfu Cao and Xiaolei Dong. Diophantine equations and class number of imaginary quadratic fields, Discuss. Math.- General Algebra and Applications, 20(2), 199 -206, 2000.
  106. Zhenfu Cao. A note on the Diophantine equation $a^x+b^y=c^z$, Acta Arithmetica, 91(1), 85-93, 1999.
  107. Zhenfu Cao. The Diophantine equations $x^4 – y^4 = z^p$ and $x^4 – 1 = dy^q$, C. R. Math. Rep. Acad. Sci. Canada, 21(1), 23-27, 1999.
  108. Zhenfu Cao and Xiaolei Dong. Diophantine equation $Ax^2 + B = y^n$, Chinese Science Bulletin, 43(13), 1141-1142, 1998.
  109. Zhenfu Cao and Xiaolei Dong. On Terai’s conjecture, Proceedings of the Japan Academy Series A, 74A(8), 127-129, 1998.
  110. Zhenfu Cao and A. Grytczuk. Fermat’s type equation in the set of 2X2 integral matrices, Tsukuba Journal of Mathematics, 22 (3), 637-643, 1998.
  111. Zhenfu Cao. Corrigendum to “On the Diophantine equation $x^4 – py^2 = z^p$”, C. R. Math. Rep. Acad. Sci. Canada, 18(5), 233-234, 1996.
  112. Zhenfu Cao. Finite set theory and its application to cryptology, Journal of Statistical Planning and Inference, 51(2), 129-136, 1996.
  113. Zhenfu Cao. On the Diophantine equation $x^4 – py^2 = z^p$, C. R. Math. Rep. Acad. Sci. Canada, 17(2), 61-66, 1995.
  114. Zhenfu Cao. The Diophantine equation $cx^4 + dy^4 = z^p$, C. R. Math. Rep. Acad. Sci. Canada, 14(5), 231-234, 1992.
  115. Zhenfu Cao. On the Diophantine equation $\frac{ax^m - 1} {abx - 1} = by^2$, Chinese Science Bulletin, 36(4), 275-278, 1991.
  116. Zhenfu Cao. On the Diophantine equation $ax^m – by^n = 2$, Chinese Science Bulletin, 35(14), 1227-1228, 1990.
  117. Zhenfu Cao, R. Liu and L. Zhang. On the Diophantine equation $\sum_{j=1}^s \frac1{x_j}+\frac1{x_1 \cdots x_s}=1$ and Znám’s problem, Journal of Number Theory, 27(2), 206-211, 1987.
  118. Zhenfu Cao. On the Diophantine equation $a^x + b^y = c^z$, I, Chinese Science Bulletin, 32(22), 1519-1521, 1987.
  119. Zhenfu Cao. On the Diophantine equation $x^{2n} – \mathcal{D}y^2 = 1$, Proceedings of the American Mathematical Society, 98(1), 11-16, 1986.
  120. Q. Sun and Zhenfu Cao. On the equation $\sum_{j=1}^s \frac1{x_j} + \frac1{x_1 \cdots x_s} = n$ and the number of solutions of Znám’s problem, Advances in Mathematics (China), 15(3), 329-330, 1986.
  121. Zhenfu Cao. The equation $a^x – b^y = (2p^s)^z$ and Hugh Edgar’s problem, Chinese Science Bulletin, 31(8), 572-573, 1986.
  122. Zhenfu Cao. The equation $x^2 + 2^m = y^n$ and Hugh Edgar’s problem, Chinese Science Bulletin, 31(22), 1578-1579, 1986.
  123. Z. Xu and Zhenfu Cao. On a problem of Mordell, Chinese Science Bulletin, 31(13), 932, 1986.
  124. Q. Sun and Zhenfu Cao. On the equation $\frac1{x_1} + \cdots + \frac1{x_s} - \frac1{x_1 \cdots x_s} = 1$ and its applications, Chinese Science Bulletin, 30(5), 700-701, 1985.

Selected Conference Papers (since 2002)

  1. Xiaohui Liang, Zhenfu Cao, Huang Lin, and Jun Shao. Attribute Based Proxy Re-encryption with Delegating Capabilities. ASIACCS 2009, Sydney, Australia, 10-12 March 2009. ACM, 276-286, 2009.
  2. Xiaohui Liang, Zhenfu Cao, Huang Lin, and Dongsheng Xing. Provably Secure and Efficient Bounded Ciphertext Policy Attribute Based Encryption. ASIACCS 2009, Sydney, Australia, 10-12 March 2009. ACM, 343-352, 2009.
  3. Hai Huang and Zhenfu Cao. An ID-based Authenticated Key Exchange Protocol Based on Bilinear Diffie-Hellman Problem. ASIACCS 2009, Sydney, Australia, 10-12 March 2009. ACM, 333-342, 2009.
  4. Zongyang Zhang, Zhenfu Cao, Ning Ding, and Rong Ma. Non-malleable Statistically Hiding Commitment from Any One-way Function. ASIACRYPT 2009, Tokyo, Japan, December 6-10, 2009.
  5. Jun Shao and Zhenfu Cao. CCA-Secure Proxy Re-Encryption without Pairings. PKC 2009, California, USA, March 18-20, 2009. Lecture Notes in Computer Science, Springer, 5443: 357-376, 2009.
  6. Hai Huang and Zhenfu Cao. An Insider-Resistant Group Key Exchange Protocol without Signatures. IEEE ICC'09, Dresden, Germany, June 14-18, 2009.
  7. Zongyang Zhang, Zhenfu Cao, and Rong Ma. An Observation on Non-Malleable Witness-Indistinguishability and Non-Malleable Zero-Knowledge. TAMC 2009, Changsha, P. R. China, May 18-22, 2009. Lecture Notes in Computer Science, Springer, 5532: 470-479, 2009.
  8. Muxin Zhou and Zhenfu Cao. Spatial Encryption under Simpler Assumption. ProvSec 2009, Guangzhou, China, November 11-13, 2009.
  9. Yinan Shan and Zhefu Cao. Extended attribute based encryption for private information retrieval. The 2009 IEEE International Symposium on Trust, Security and Privacy for Pervasive Applications (TSP 2009), Macau SAR, P. R. China, October 12-14, 2009.
  10. Piyi Yang, Zhenfu Cao, and Xiaolei Dong. A Dependable Threshold Broadcast Encryption System for Key Distribution in Mobile Ad Hoc Network. The Second (IEEE) International Conference on Dependability (DEPEND 2009), Athens/Glyfada, Greece, June 18-23, 2009.
  11. Piyi Yang, Zhenfu Cao, and Xiaolei Dong. Certificateless Threshold Signature for Data Report Authentication in Mobile Ad-Hoc Network. 3rd International Conference on Network & System Security (NSS 2009), Gold Coast, Australia, October 19-21, 2009.
  12. Liuquan Qin, Zhenfu Cao, and Xiaolei Dong. Multi-receiver identity-based encryption in multiple PKG environment, Proc. IEEE Globecom'08, New Orleans, LA, USA, Nov. 30-Dec. 4, 2008. IEEE, 1862-1866, 2008.
  13. Rongxing Lu, Xiaodong Lin, Haojin Zhu, Pin-Han Ho, Xuemin(Sherman) Shen, and Zhenfu Cao. A new dynamic group key management scheme with low rekeying cost, Proc. IEEE WCNC'08, Las Vegas, Nevada, USA, March 31 - April 3, 2008. IEEE, 3243-3248, 2008.
  14. Huang Lin, Zhenfu Cao, Xiaohui Liang, and Jun Shao. Secure threshold multi-authority attribute based encryption without a central authority, INDOCRYPT 2008, Lecture Notes in Computer Science, Springer, 5365: 426-436, 2008.
  15. Piyi Yang, Zhenfu Cao, and Xiaolei Dong. Chosen Ciphertext Secure Certificateless Threshold Encryption in the Standard Model, Inscrypt 2008, Beijing, December 14-17, 2008. Lecture Notes in Computer Science, Springer, 5487: 201-216, 2009.
  16. Congkai Sun, Bin Gao, Zhenfu Cao, and Hang Li. HTM: A topic model for hypertexts, EMNLP 2008, Hawaii, USA, October 25-27, 2008. Proceedings of the Conference, 514-522, 2008.
  17. Piyi Yang, Zhenfu Cao, and Xiaolei Dong, Threshold Proxy Re-Signature. 27th IEEE International Performance Computing and Communications Conference, IPCCC 2008, Dec 7-9 2008, Austin, Texas, USA. Proceedings of the Conference, 450-455, 2008.
  18. Fengying Li, Qingshui Xue, Jiping Zhang, and Zhenfu Cao. A Model of Bilinear-Pairings Based Designated-Verifier Proxy Signatue Scheme. CollaborateCom 2008, Orlando, FL, USA, November 13-16, 2008, Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 10, Springer, 416-424, 2009.
  19. Xiaodong Lin, Rongxing Lu, Haojin Zhu, P.H. Ho, Xuemin Shen and Zhenfu Cao. ASRPAKE: An Anonymous Secure Routing Protocol with Authenticated Key Exchange for Wireless Ad Hoc Networks, Proc. IEEE ICC'07, Glasgow, UK, June 24-28, 2007.
  20. Xiaodong Lin, Rongxing Lu, P.H. Ho, Xuemin Shen and Zhenfu Cao. A novel compromise-resilient authentication system for wireless mesh networks, Proc. IEEE WCNC'07, Hong Kong, March 11-15, 2007.
  21. Jun Shao, Zhenfu Cao, Licheng Wang, Rongxing Lu. Efficient password-based authenticated key exchange without public information, ESORICS 2007, Lecture Notes in Computer Science, Volume 4734: 299-310, 2007.
  22. Jun Shao, Min Feng, Bin Zhu, and Zhenfu Cao. An efficient certified email protocol, ISC 2007, Lecture Notes in Computer Science, Volume 4779: 145-157, 2007.
  23. Jun Shao, Zhenfu Cao, Licheng Wang, Xiaohui Liang. Proxy re-signature schemes without random oracles, INDOCRYPT 2007, Lecture Notes in Computer Science, Volume 4859: 197-209, 2007.
  24. Licheng Wang, Zhenfu Cao, Shihui Zheng, Xiaofang Huang, Yixian Yang. Transitive signatures from braid groups, INDOCRYPT 2007, Lecture Notes in Computer Science, Volume 4859: 183-196, 2007.
  25. Lihua Wang, Jun Shao, Zhenfu Cao, Masahiro Mambo, Akihiro Yamamura. A certificate-based proxy cryptosystem with revocable proxy decryption power, INDOCRYPT 2007, Lecture Notes in Computer Science, Volume 4859: 297-311, 2007.
  26. Xiaohui Liang, Zhenfu Cao, Jun Shao, Huang Lin. Short group signature without random oracles, ICICS 2007, Lecture Notes in Computer Science, Volume 4861: 69-82, 2008.
  27. Licheng Wang, Zhenfu Cao, Peng Zeng and Xiangxue Li. One-more matching conjugate problem and security of braid-based signatures, ASIACCS 2007, Singapore, ACM Press, pp.295-301, 2007.
  28. Fengying Li, Qingshui Xue, Zhenfu Cao. Crypanalysis of Kuo and Chen's threshold proxy signature scheme based on the RSA, ITNG 2007, Proceedings, pp. 815-818, 2007.
  29. Zhenfu Cao, Dazhi Sun. Cryptanalysis and improvement of user authentication scheme using smart cards for multi-server environments, ICMLC 2006, Proceedings, IEEE Computer Society Press, Vol. 5, pp. 2818 - 2822, 2006.
  30. Shanshan Duan and Zhenfu Cao. Efficient and provably secure multi-receiver identity-based signcryption, ACISP 2006, Lecture Notes in Computer Science, Vol. 4058, 195-206, 2006.
  31. Rongxing Lu, Zhenfu Cao, Xiaolei Dong. Efficient ID-based One-time Proxy Signature and Its Application in E-cheque, CANS 2006, Lecture Notes in Computer Science, Vol. 4301, 153 -167, 2006.
  32. Feng Cao and Zhenfu Cao. Security model of proxy-multi signature schemes, CANS 2006, Lecture Notes in Computer Science, Vol. 4301, 144 -152, 2006.
  33. Yuan Zhou, Zhenfu Cao, Zhenchuan Chai. Identity Based Key Insulated Signature, ISPEC 2006, Lecture Notes in Computer Science, Vol. 3903, 226-234, 2006.
  34. Zhenchuan Chai, Zhenfu Cao, Rongxing Lu. Remote Authentication with Forward Security, Remote Authentication with Forward Security, ATC 2006, Lecture Notes in Computer Science, Vol. 4158, 418-427, 2006.
  35. Zhenchuan Chai, Zhenfu Cao, Rongxing Lu. Efficient Password-based Authentication and Key Exchange Scheme Preserving User Privacy, WASA 2006, Lecture Notes in Computer Science, Vol. 4138, 467-477, 2006.
  36. Haiyong Bao, Zhenfu Cao, and Shengbao Wang. Identity-based threshold proxy signature scheme with known signers, TAMC 2006, Lecture Notes in Computer Science, Vol. 3959, 538-546, 2006.
  37. Rongxing Lu, Xiaolei Dong, Zhenfu Cao, Licheng Wang. Design of smart card-based electronic vita using proxy signature technique, CIS 2006, pp.1385-1388, 2006
  38. Shengbao Wang and Zhenfu Cao. Cryptanalysis and Improvement of Choie et al.'s Authenticated Key Agreement Protocols, CIS 2006, pp.1371-1374, 2006.
  39. Licheng Wang, Zhenfu Cao and Feng Cao. Cryptanalysis and Improvement on An ID-Based Key Issuing Protocol, IMSCCS 06 , IEEE Computer Society Press, Vol. 2, pp. 8 - 12, 2006.
  40. Feng Cao, Licheng Wang and Zhenfu Cao. An Improvement of an Identity-Based Key Issuing Protocol, IMSCCS 2006, IEEE Computer Society Press, Vol, 2, pp.13 - 18, 2006.
  41. Rongxing Lu, Zhenfu Cao, Xiaolei Dong and Renwang Su. Designated Verifier Proxy Signature Scheme from Bilinear Pairings, IMSCCS 2006, IEEE Computer Society Press, Vol, 2, pp. 40-47, 2006.
  42. Feng Cao and Zhenfu Cao. A proxy-protected signature scheme based on finite automaton, IMSCCS 2006, IEEE Computer Society Press, Vol, 2, pp.48 - 55, 2006.
  43. Sheng Guo, Zhenfu Cao, Rongxing Lu. An Efficient ID-Based Multi-proxy Multi-signature Scheme, IMSCCS 2006, IEEE Computer Society Press, Vol, 2, 81-88, 2006.
  44. Rongxing Lu, Zhenfu Cao, Xiaolei Dong and Renwang Su. Group Oriented Deniable Authentication Protocol, IMSCCS 2006, IEEE Computer Society Press, Vol, 2, 89 - 92, 2006.
  45. Shengbao Wang, Zhenfu Cao and Haiyong Bao. Two-Pass ID-Based Authenticated Key Agreement Protocol with Key Confirmation Using Pairings, IMSCCS 06, IEEE Computer Society Press, Vol. 2, pp. 109 - 112, 2006.
  46. Haifeng Qian, Zhenfu Cao, Licheng Wang, Sheng Guo. Cryptanalysis of Chang-Lin-Lam's ID-based Multisignature Scheme, IMSCCS 06, IEEE Computer Society Press, Vol. 2, pp. 113-116, 2006.
  47. Feng Cao and Zhenfu Cao. Cryptanalysis on a proxy multi-signature scheme, IMSCCS 2006, IEEE Computer Society Press, Vol, 2, pp.117 - 120, 2006.
  48. Zhenchuan Chai, Zhenfu Cao, and Yuan Zhou. Efficient ID-based Broadcast Threshold Decryption in Ad hoc Network, IMSCCS 06, IEEE Computer Society Press, Vol. 2, pp.148-154, 2006.
  49. Rongxing Lu, Zhenfu Cao, Xiaolei Dong. Efficient and Provably Secure Transformation-free Proxy Cryptosystem, IWAP2006, 5th International Workshop on Applied PKC, 2006.
  50. Rongxing Lu, Zhenfu Cao, Xiaolei Dong, Licheng Wang. Threshold Short Proxy Signature Scheme with Provable Security, Inscrypt 2006 (formerly The SKLOIS conference on information security and cryptology) short paper proceedings, pp. 54-68, 2006.
  51. Rongxing Lu, Zhenfu Cao, Xiaolei Dong. Pairing-Based Proxy Ring Signature Scheme with Proxy Signer Privacy Protection, ChinaCrypto'2006, pp.1-10, 2006.
  52. Xiaohui Liang, Zhenfu Cao, Zhenchuan Chai and Rongxing Lu. ID-based Threshold Blind Signature scheme from Bilinear Pair, ChinaCrypto'2006, pp.244 - 252, 2006.
  53. Licheng Wang, Zhenfu Cao, et al. Certificateless Threshold Signature Schemes, CIS 2005, Part II, Lecture Notes in Artificial Intelligence, Vol. 3802, Springer-Verlag, 104-109, 2005.
  54. Qin Wang, Zhenfu Cao. Efficient ID-Based Proxy Signature and Proxy Signcryption form Bilinear Pairings, CIS 2005, Part II, Lecture Notes in Artificial Intelligence, Vol. 3802, Springer-Verlag, 167-172, 2005.
  55. Shanshan Duan, Zhenfu Cao. Secure Delegation-by-Warrant ID-Based Proxy Signcryption Scheme, CIS 2005, Part II, Lecture Notes in Artificial Intelligence, Vol. 3802, Springer-Verlag, 445 - 450, 2005.
  56. Yuan Zhou, Zhenfu Cao and Rongxing Lu. Constructing Secure Warrant-Based Proxy Signcryption Schemes, CANS'05, Lecture Notes in Computer Science, Vol. 3810, Springer-Verlag, 172 - 185, 2005.
  57. Haiyong Bao, Zhenfu Cao, and Haifeng Qian. On the security of a group signcryption scheme from distributed signcryption scheme, CANS'05, Lecture Notes in Computer Science, Vol. 3810, Springer- Verlag, 26 - 34, 2005.
  58. Qin Wang, Zhenfu Cao. Two Proxy Signcryption Schemes from Bilinear Pairings, CANS 2005, Lecture Notes in Computer Science, 3810, Springer-Verlag, pp.161-171, 2005.
  59. Haifeng Qian and Zhenfu Cao. A Novel ID-Based Partial Delegation with Warrant Proxy Signature Scheme, ISAP2005, Lecture Notes in Computer Science, Vol. 3759, Springer-Verlag, pp.323 - 331, 2005.
  60. Shengbao Wang, Zhenfu Cao, and Haiyong Bao. Security of an Efficient ID-Based Authenticated Key Agreement Protocol from Pairings, ISAP2005, Lecture Notes in Computer Science, Vol. 3759, Springer-Verlag, pp. 342-349, 2005.
  61. Zhenchuan Chai, Zhenfu Cao, and Yuan Zhou. Encryption Based on Reversible Second-Order Cellular Automata, ISPA2005, Lecture Notes in Computer Science, Vol. 3759, Springer-Verlag, pp. 350-358, 2005.
  62. Yuan Zhou, Zhenfu Cao and Zhenchuan Chai. An efficient proxy-protected signature scheme based on factoring, ISPA2005, Lecture Notes in Computer Science, Vol. 3759, Springer-Verlag, pp. 332 - 341, 2005.
  63. Dazhi Sun, Zhenfu Cao. Improvement of Lee-Kim-Yoo's remote user authentication scheme using smart cards, ICNC'05-FSKD'05, Lecture Notes in Artificial Intelligence, Vol. 3614, Springer-Verlag, pp.596 - 599, 2005.
  64. Yuan Zhou, Zhenfu Cao, Zhenchuan Chai. Construct secure proxy cryptosystem, CISC 2005, Lecture Notes in Computer Science, Vol. 3822, Springer-Verlag, pp. 150 - 161, 2005.
  65. Qin Wang, Zhenfu Cao and Shengbao Wang. Formailized security model of multi-proxy signature schemes, CIT'2005, IEEE CS Press, pp. 668 - 672, 2005.
  66. Haifeng Qian, Zhenfu Cao, Lichen Wang and Qingshui Xue. Efficient Non-Interactive Deniable Authentication Protocols, CIT'2005, IEEE CS Press, pp. 673 - 679, 2005.
  67. Shengbao Wang, Zhenfu Cao, Qin Wang and Mengzi Zhang. Authenticated Key Agreement Protocol using Bilinear Aggregate Signatures, GMC 2005, Proceedings of 2005 Global Mobile Congress, Delson Group Inc., pp. 328 - 332, 2005.
  68. Qingshui Xue, Zhenfu Cao and Haifeng Qian. A generalized proxy signature scheme based on the RSA cryptosystem, PDCAT 2004, Lecture Notes in Computer Science, Vol. 3320, Springer-Verlag, Berlin Heidelberg, pp. 662–665, 2004.
  69. Qingshui Xue and Zhenfu Cao. A threshold proxy signature scheme using self-certified public keys, ISPA 2004, Lecture Notes in Computer Science, Vol. 3358, Springer-Verlag, Berlin Heidelberg, pp. 715-724, 2004.
  70. Zhenchuan Chai and Zhenfu Cao. Factoring-Based Proxy Signature Schemes with Forward-Security, CIS 2004, Lecture Notes in Computer Science, Vol. 3314, Springer-Verlag, Berlin Heidelberg, pp. 1034 - 1040, 2004.
  71. Qingshui Xue and Zhenfu Cao. Cryptanalysis of new digital nominative proxy signature schemes for mobile communication, GMC 2004, Proceedings - 2004 Global Mobile Congress, 302 - 306, 2004.
  72. Rongxing Lu and Zhenfu Cao, A proxy-protected twin signature scheme, GMC 2004, Proceedings - 2004 Global Mobile Congress, 497 - 502, 2004.
  73. Qingshui Xue and Zhenfu Cao, Improvement of Multi-proxy Signature Scheme, IEEE CIT 2004, IEEE Computer Society Press, pp. 450 - 455, September 14-16, 2004.
  74. Qingshui Xue, Zhenfu Cao and Feilong Tang, An improved threshold proxy signature scheme based on the RSA cryptosystem, PDPTA'04, CSREA Press, Volume 2, pp. 901 - 907, June 21-24, 2004.
  75. Qingshui Xue and Zhenfu Cao, A nonrepudiable multi-proxy multi- signature scheme, IEEE SympoTIC'04, Bratislava, Slovakia, pp. 102 - 105, 24-26 October 2004.
  76. Qingshui Xue and Zhenfu Cao. A new proxy blind signature scheme with warrant, IEEE CIS 2004, Singapore, Volume: 2, 1386-1391, 2004.
  77. Rongxing Lu, Zhenfu Cao. A proxy-protected signature scheme based on conic, ACM Infosecu'04, ACM press, 22 - 26, 2004.
  78. Shanshan Duan, Zhenfu Cao, and Rongxing Lu. Robust ID-based threshold signcryption scheme from pairings, ACM Infosecu'04, ACM press, 33 - 37, 2004.
  79. Yuan Zhou, Zhenfu Cao, and Rongxing Lu. An efficient digital signature using self-certified public keys, ACM Infosecu'04, ACM press, 44 - 47, 2004.
  80. Lihua Wang, Zhenhu Cao, Eiji Okamoto, Ying Miao, and Takeshi Okamoto. Transformation-free proxy cryptosystems and their applications to electronic commerce, ACM Infosecu'04, ACM press, 92 - 98, 2004.
  81. Haiyong Bao, Zhenfu Cao, and Haifeng Qian. Cryptanalysis of group signature scheme from ID-based signature scheme, ACM Infosecu'04, ACM press, 115 - 118, 2004.
  82. Zhengchuan Chai, Zhenfu Cao, and Rongxing Lu. ID-based Threshold Decryption without Random oracles and its Application in Key Escrow, ACM Infosecu'04, ACM press, 119 - 124, 2004.
  83. Jun Shao, Rongxing Lu, and Zhenfu Cao. A New Efficient Identification Scheme based on the Strong Diffie-Hellman Assumption, ISFST 2004, Published in December 2004 by Software Engineers Association, ISBN 4-916227-17-4.
  84. Qingshui Xue and Zhenfu Cao, Security analysis and improvement of some threshold proxy signature schemes, DCABES 2004, Wuhan University of Technology Press, Volume 2, pp. 944-949, 2004.
  85. Qingshui Xue, Zhenfu Cao, and Haifeng Qian, Bilinear Pairings-based Threshold Proxy Signature Schemes with Known Signers, DCABES 2004, Wuhan University of Technology Press, Volume 2, pp. 950 - 955, 2004.
  86. Qingshui Xue, Zhenfu Cao and Haifeng Qian, Generalization of Proxy Signature Based on the RSA Cryptosystem, ISCI 2004, Volume 2, pp. 913-917, August 15-18, 2004.
  87. Qingshui Xue and Zhenfu Cao, Factoring Based Proxy Signature Schemes, ISCI 2004, Volume 2, pp. 918-922, August 15-18, 2004.
  88. Biao Li, Zhenfu Cao and Shensheng Zhang, $\infty$-Resilient Robust Key-evolving Scheme, International conference on computer communication, ICCC'02, Indio, 561 - 564, 2002.
  89. Zhenfu Cao and Xiaolei Dong. Diophantine equations, quadratic fields and other, ICM 2002, Report of International Congress of Mathematicians (15 minutes), Beijing, August 20-28, 2002.
  90. Zhenfu Cao. A robust threshold key escrow scheme based on the improved RSA algorithm, The 5th Northeast Asia Symposium & the 2nd Asian eBusiness Workshop, Seoul, Korea, August 22-24, 2002.
  91. Xiaolei Dong and Zhenfu Cao, $\Bbb Z_N-$trees and its application to public-key cryptosystem, Fourth Shanghai Conference on Combinatorics, May 24-28, 2002.
  92. Xiaolei Dong and Zhenfu Cao, Class number problem of some real quadratic fields and quadratic field cryptosystem, Advance in Cryptology-Chinacrypt'02, Publishing House of Electronics Industry, 210-219, 2002.

Selected Papers in Chinese (since 1981)

  1. Xiaolei Dong, Zhenfu Cao, and Licheng Wang. New designing of cryptosystems based on quadratic fields, Science in China Series F(中国科学), 39 (5), 526-533, 2009.
  2. Zhenchuan Chai, Xiaolei Dong, and Zhenfu Cao. Identity-based signature scheme based on quadratic residues, Science in China Series F(中国科学), 39(2), 199-204, 2009.
  3. Xiaoxin Ye, Zhenfu Cao, and Xiaohui Liang. Fair Document Exchange Protocol with Confidentiality, Computer Engineering(计算机工程), 35(4), 149-151, 2009.
  4. Chaoliang Sun, Zhenfu Cao, and Xiaohui Liang. Threshold Proxy Re-signature Scheme, Computer Engineering(计算机工程), 35(4), 128-130, 2009.
  5. Changxiang Shen, Huangguo Zhang, Dengguo Feng, Zhenfu Cao, Jiwu Huang. Survey of information security, Science in China Series E(中国科学), 37 (1), 129-150, 2007.
  6. Shengbao Wang, Zhenfu Cao and Xiaolei Dong. Provably secure identity-based authenticated key agreement protocols in the standard model, Chinese Journal of Computers(计算机学报), 30(10), 1842-1854, 2007.
  7. Minfang Lv, Zhenfu Cao. Efficient electronic cash scheme for smart card, Computer Engineering(计算机工程), 33(22), 172-174,189, 2007.
  8. Zhao Lin, Zhenfu Cao, Xiaolei Dong, Rongxing Lu. Short designated verifier signature scheme based on self-certified cryptosystem, Computer Engineering(计算机工程), 33(24), 153-154, 2007.
  9. Xiaolei Dong, Zhenfu Cao, Xiaohong Li. Cryptanalysis of Two Signature Schemes Based on Two Hard Problems, Journal of Shanghai Jiaotong University(上海交通大学学报), 40(7), 1174 -1177, 2006.
  10. Qin Wang, Zhenfu Cao. Formal Model of Proxy Multi-Signature and a Construction, Chinese Journal of Computers(计算机学报), 29(9), 1626-1633, 2006.
  11. Xiuxia Tian, Zhenfu Cao, Wenjun Ye. ID-Based Partial Delegation Proxy Multi-Signature with Warrant from Bilinear Pairings, Acta Electronica Sinica(电子学报), 34(12A), 2569-2570, 2006.
  12. Xiuxia Tian, Zhenfu Cao. The Identity-Based Authenticated Blind Signature Protocol, Journal of Shanghai Jiaotong University(上海交通大学学报), 40(7), 1170-1173, 2006.
  13. Xionggui Chen, Zhenfu Cao, Sheng Guo. Improvement on New IPSec-NAT Traversal Solution, Computer Engineering(计算机工程), 32(20), 166-167,182, 2006.
  14. Sheng Guo, Zhenfu Cao, Rongxing Lu. ID-based Authenticated Encryption Scheme with Public Verifiability, Computer Engineering(计算机工程), 32(18), 125-126,194, 2006.
  15. Xiuxia Tian, Zhenfu Cao. Identity-based Authenticated Blind Signature Scheme, Computer Engineering(计算机工程), 32(14), 136-137, 2006.
  16. Jiandong Su, Zhenfu Cao. An Efficient Authenticated Encryption Scheme with Public Verifiability, Computer Engineering(计算机工程), 32(3), 167-168, 2006.
  17. Ye Jin, Zhenfu Cao. A New Digital Signature Scheme Used in Mobile Agent, Computer Engineering(计算机工程), 32(2), 149-150, 182, 2006.
  18. Haojin Zhu, Zhenfu Cao. An Elliptic Curve Dynamic Identity Authentication Scheme Based on Smart Cards, Computer Engineering(计算机工程), 32(2), 135-136, 208, 2006.
  19. Zhenfu Cao and Qingshui Xue. New results and directions in cryptography, Computer Education(计算机教育), No. 1, 19-21, 2005.
  20. Zhenfu Cao. New directions in the information security, Shanghai Informatization(上海信息化), No. 2, 12-14, 2005.
  21. Zhenfu Cao, Haojin Zhu and Rongixng Lu. Provably Secure Robust Threshold Partial Blind Signature, Science in China Series E(中国科学), 35(12): 1254-1265, 2005.
  22. Xiang Li, Xiaolei Dong, Zhenfu Cao. Blind signature scheme based on ideal class groups of quadratic fields, Computer Applications and Software(计算机应用和软件), Vol. 22, 34-35, 41, 2005.
  23. Shanshan Duan, Zhenfu Cao, Rongxing Lu. Robust ID-Based Threshold Signcryption Scheme from Pairings, Journal of Shanghai Jiaotong University(上海交通大学学报), 39(12), 1946 - 1949, 2005.
  24. Rengwang Su, Zhenfu Cao. Embeddings of Resolvable 4-cycle Systems, Journal of Shanghai Jiaotong University(上海交通大学学报), 39(10), 1715-1717, 2005.
  25. Hongli Qiu, Zhenfu Cao. Forward-secure Signature Scheme Based on Strong RSA Assumption, Computer Engineering(计算机工程), 31(9), 64-66, 2005.
  26. Xiuxia Tian, Zhenfu Cao. A New ID-based Strong Proxy Signature Scheme, Computer Engineering(计算机工程), 31(12), 149-150, 2005.
  27. Yu Long, Zhenfu Cao. A Dynamic (k, n) Threshold Key Escrow Scheme, Computer Engineering(计算机工程), 31(12), 154-155, 2005.
  28. Yu Long, Zhenfu Cao. Research on the LEAF Structure of Key Escrow Scheme, Computer Engineering(计算机工程), 31(12), 156-157, 160, 2005.
  29. Dongfeng Tian, Zhenfu Cao. Proxy Signature Based on Pairing Applied in Mobile Agent, Computer Engineering(计算机工程), 31(18), 146-147, 2005.
  30. Chunnong Zhou, Zhenfu Cao. Research on the digital signature based on the NPC combined with discrete logarithm, China Information Security(信息安全与通信保密), No.3, 133 -135, 2005.
  31. Jiandong Su, Yuan Zhou, Zhenfu Cao. The agent signature for the instance of revert messages by the specified receiver based on ellipse curve, China Information Security(信息安全与通信保密), No.2, 131 - 133, 2005.
  32. Zhenfu Cao, The divisibility of the class number of imaginary quadratic fields, Chinese Ann. Math. Ser. A(数学年刊), 25(3), 397 - 406, 2004.
  33. Haifeng Qian, Zhenfu Cao, Qingshui Xue. A new threshold proxy signature scheme from bilinear pairings, Science in China Ser. E(中国科学), 34(6), 711 - 720, 2004.
  34. Haojin Zhu, Zhenfu Cao and Yuan Zhou. An elliptic curve restrictive partially blind signature and off-line E-cash scheme, Journal of Wuhan University (Nat. Sci. Ed.)(武汉大学学报), 50(S1), 205 - 208, 2004.
  35. Zhenfu Cao, Two classes of robust threshold key escrow schemes, Journal of Software(软件学报), 14(6), 1164 - 1171, 2003.
  36. Zhenfu Cao, Jiguo Li, Jianzhong Li, A new (t, n) threshold signature encryption scheme with the specified receiver, Journal of China Institute of Communications(通信学报), 24(5), 8 - 13, 2003.
  37. Jiguo Li, Zhenfu Cao, Jianzhong Li. (t, n) Threshold Shared Verification Signature Encryption Scheme with Specified Receiving Groups, Acta Electronica Sinica(电子学报), 31(7), 50 - 52, 2003.
  38. Jiguo Li, Zhenfu Cao and Yichen Zhang, Jianzhong Li. Cryptographic analysis and modification of proxy multi-signature scheme, High Technology Letters(高技术通讯), 13(4), 1 - 5, 2003.
  39. Jiguo Li, Zhenfu Cao, Jianzhong Li and Yichen Zhang. Present situation and progress of proxy signature, Journal of China Institute of Communications(通信学报), 24(10), 114 - 124, 2003.
  40. Zhenfu Cao, Jiguo Li. A Threshold Key Escrow Scheme Based on ElGamal Public Key Cryptosystem, Chinese Journal of Computers(计算机学报), 25(4), 346-350, 2002.
  41. Jiguo Li, Zhenfu Cao. Improvement of a threshold proxy signature scheme, Journal of Computer Research and Development(计算机研究与发展), 39(11), 1513 - 1518, 2002.
  42. Jiguo Li, Zhenfu Cao. Improvement of a threshold proxy signature scheme, Chinacrypt'02(中国密码学学术会议’02), 169 - 177, 2002.
  43. Zhenfu Cao. Error analysis and high-precision realization of fast speed recursive DFT’s, Acta Electronica Sinica(电子学报), 29(1), 133-135, 2001.
  44. Zhenfu Cao, Xiaolei Dong, Digital signature and public key cryptosystem in two primes product order subgroup of $Z*_{pq}$, Journal of Electronics and Information Technology(电子与信息学报), 23(Suppl), 111-115, 2001.
  45. Zhenfu Cao. A threshold key escrow scheme based on public key cryptosystem, Science in China (Series E)(中国科学), 30(4), 360-366, 2000.
  46. Xiaolei Dong, Zhenfu Cao. Terai-Jesmanowicz Conjecture on the Equation $a^x + b^y = c^z$, Chinese Ann. Math. Ser. A(数学年刊), 21A(6), 709-714, 2000.
  47. Zhenfu Cao and Biao Zhang. MC public-key cryptosystem based on Chinese Remainder Theorem, Advances in Cryptology - Chinacrypt’2000(中国密码学学术会议’00), Sci. Press, 29-33, 2000.
  48. Biao Zhang and Zhenfu Cao. Cryptographic analysis and modification of Cao-Li public-key cryptosystem, CCICS’99(中国首届信息与通信安全会议’99), Proceeding, Sci. Press, 189-195, 2000.
  49. Zhenfu Cao and Xiaolei Dong. On the Diophantine equation $x^3 + y^3 = Dz^2$, J. Harbin Inst. Tech.(哈尔滨工业大学学报), 31(2), 110-113, 1999.
  50. Zhenfu Cao and F. Jia. MD error correcting block cipher systems, J. Harbin Inst. Tech.(哈尔滨工业大学学报), 31(1), 26-28, 1999.
  51. Zhenfu Cao. On the security of the RSA based on a polynomial over finite fields Fp and a new analog of the RSA, Journal of China Institute of Communications(通信学报), 20(6), 15-18, 1999.
  52. Zhenfu Cao and C. Jin. On the number of solutions of Znám’s problem, J. Harbin Inst. Tech.(哈尔滨工业大学学报), 30(1), 46-49, 1998.
  53. Zhenfu Cao and Xiaolei Dong. On the Diophantine equation $Ax^2 + B = y^n$, Chinese Science Bulletin(科学通报), 43(7), 783, 1998.
  54. Zhenfu Cao. A public key cryptosystem based on a conic over finite fields Fp, Advances in cryptology-CHINACRYPT’98(中国密码学学术会议’98), Sci. Press, Beijing, 45-49, 1998.
  55. Zhenfu Cao. The class number of the imaginary quadratic field and some Diophantine equations, J. Harbin Inst. Tech.(哈尔滨工业大学学报), 29(5) 36-39, 1997.
  56. Zhenfu Cao. Very high speed deconvolution besed on the recursively computing DFTs, J. Harbin Inst. Tech.(哈尔滨工业大学学报), 29(6), 4-6, 13, 1997.
  57. Zhenfu Cao. Simple groups order $2^{\alpha_1} 3^{\alpha_2} 5^{\alpha_3} 7^{\alpha_4} p^{\alpha_5}$, Chinese Ann. Math. Ser. A(数学年刊), 16(2), 244-250, 1995.
  58. Zhenfu Cao. Divisibility of the class numbers of imaginary quadratic fields, Acta Math. Sinica(数学学报), 37(1), 50-56, 1994.
  59. Zhenfu Cao. Diophantine equations and divisibility of class numbers of real quadratic fields, Acta Math. Sinica(数学学报), 37(5), 625-631, 1994.
  60. Zhenfu Cao. On the Diophantine equation $Cx^2+2^mD=k^n$, Chinese Ann. Math. Ser. A(数学年刊), 15(2), 235-240, 1994.
  61. Zhenfu Cao, M. Deng and J. Li. A elementary solution to the equation $(x(x-1)/2)^2 = y(y-1)/2$, Chinese Science Bulletin(科学通报), 39(7), 670, 1994.
  62. Zhenfu Cao and G. Zhao. Some new MC knapsack cryptosystems, Advances in cryptology-CHINACRYPT’94(中国密码学学术会议’94), Sci. Press, Beijing, 70-75, 1994.
  63. Zhenfu Cao. On the Diophantine equation $Cx^2 + 2^mD = y^n$, Chinese Science Bulletin(科学通报), 37(22), 2106, 1992.
  64. Zhenfu Cao. Two new types of cryptosystems over Eisenstein’s ring Z[w], Journal of Electronics(电子科学学刊), 14(3), 286-290, 1992.
  65. Zhenfu Cao. Breaking a kind of Diophantine public key cryptosystems, Nature Journal(自然杂志), 15(2), 151, 1992.
  66. Zhenfu Cao. 2-Levels secret key systems on secret sharing, Advances in cryptology-CHINACRYPT’92(中国密码学学术会议’92), Sci. Press, Beijing, 267-274, 1992.
  67. Zhenfu Cao and R. Tong et al. A conjecture on exponential Diophantine equations, Nature Journal(自然杂志), 14(11), 872-873, 1991.
  68. Zhenfu Cao. Applications of a class of Diophantine equations to Lucas sequences, J. Math.(数学杂志), 11(3), 267-274, 1991.
  69. Zhenfu Cao. Solvability of the Diophantine equation ${x^m - 1}{x - 1} = y^n $, Chinese Quart. J. Math.(数学季刊), 6(2), 56-62, 1991.
  70. Zhenfu Cao. A new type of integral trees of diameter 5 and diameter 6, J. Sys. Sci. & Math. Scis.(系统科学与数学), 11(1), 20-26, 1991.
  71. Zhenfu Cao. A generalization of the Schinzel-Sierpiński system of equations, J. Harbin Inst. Tech.(哈尔滨工业大学学报), 23(5), 9-14, 1991.
  72. Zhenfu Cao. On the Diophantine equation ${ax^m – 4c}{abx – 4c} = by^2 $, J. Harbin Inst. Tech.(哈尔滨工业大学学报), suppl., 110-112, 1991.
  73. Zhenfu Cao.? Probabilistic systems and its construction methods with recursive encryption structure, Cryptology and Information(密码与信息), (2), 1-3, 1991.
  74. Zhenfu Cao and Z. Guo. Proof algorithm of the automated theorem based on the form “and-xor”, J. Harbin Inst. Tech.(哈尔滨工业大学学报), suppl., 113-118, 1991.
  75. Zhenfu Cao. On the Diophantine equation $\frac {ax^m - 1}{abx - 1} = by^2 $, Chinese Science Bulletin(科学通报), 35(7), 492-494, 1990.
  76. Zhenfu Cao. On the equation $ax^m – by^n = 2$, Chinese Science Bulletin(科学通报), 35(7), 558-559, 1990.
  77. Zhenfu Cao and Y. Cao. Solvability of the Diophantine equation $y^2 + D^n = x^3$, Chinese Science Bulletin(科学通报), 35(14), 1115-1116, 1990.
  78. Zhenfu Cao and Y. Wang. Solvability of the equation $ax^m – by^n = 4$, Nature Journal(自然杂志), 13(11), 766, 1990.
  79. Zhenfu Cao. On Fermat’s last theorem, III, Nature Journal(自然杂志), 13(5): 314, 1990.
  80. Zhenfu Cao. A new public key cryptosystem based on the kth power residue, Journal of China Institute of Communications(通信学报), 11(2), 80-83, 1990.
  81. Zhenfu Cao and B. Zheng. A discussion about knapsack cryptosystems concealed by matrix cover, J. Harbin Inst. Tech.(哈尔滨工业大学学报), 22(6), 34-41, 1990.
  82. Zhenfu Cao. Hugh Edgar’s problem on exponential Diophantine equations, J. Math.(数学杂志), 9(2), 173-178, 1989.
  83. Zhenfu Cao. On a kind of exponential Diophantine equations, Chinese Quart. J. Math.(数学季刊), 4(1), 39-45, 1989.
  84. Zhenfu Cao. On Fermat’s last theorem, II, Nature Journal(自然杂志), 12(9), 718, 1989.
  85. Zhenfu Cao, R. Liu and L. Zhang. On the Diophantine equation $\sum_{j=1}^s ?\frac1{x_j} + \frac1{x_1 \cdots x_s} = 1$ and Znám’s problem, Nature Journal(自然杂志), 12(7), 554-555, 1989.
  86. Zhenfu Cao and R. Liu. A knapsack system based on MC problem, J. App. Math. Chinese Univ.(高校应用数学学报), 4(1), 1-5, 1989.
  87. Zhenfu Cao and W. Fu. Fast recursive Fourier transformation algorithm for the length $p^l$, App. Res. Computer(计算机应用研究), 6(6), 1-2, 1989.
  88. Zhenfu Cao. A kind of public key cryptosystems based on the kth power residue, Nature Journal(自然杂志), 12(11), 877, 1989.
  89. Zhenfu Cao and G. Yang. 2-Levels (k, n) threshold secret key sharing systems, Nature Journal(自然杂志), 12(12), 951-952, 1989.
  90. Zhenfu Cao. On the Diophantine equation $a^x + b^y = c^z$, II, Chinese Science Bulletin(科学通报), 33(3), 237, 1988.
  91. Zhenfu Cao and Cuanshu Cao. On the equation $a^x + b^y = c^z$, Pure and Applied Mathematics(纯粹和应用数学), (4), 98-100, 1988.
  92. Q. Sun and Zhenfu Cao. On the equation $\sum_{j=1}^s \frac1{x_j} + \frac1{x_1 \cdots x_s} = n$ and Znám’s problem, Northeast Math. J.(东北数学), 4(1), 43-48, 1988.
  93. Zhenfu Cao. A study of some Diophantine equations, J. Harbin Inst. Tech.(哈尔滨工业大学学报), (3), 1-7, 1988.
  94. Q. Sun and Zhenfu Cao. On the equations $x^2 + D^m = p^n$ and $x^2 + 2^m = y^n$, Journal of Sichuan University Natural Science Edition(四川大学学报), 25(2), 164-169, 1988.
  95. Zhenfu Cao. Some new public-key cryptosystems, Acta Electronica Sinica(电子学报), 16(4), 120-121, 1988.
  96. Zhenfu Cao and H. Tang. Digital processing of signals: Algorithms and applications, Nature Journal(自然杂志), 11(7), 483-486, 529, 1988.
  97. Zhenfu Cao and D. Wang. On Hugh Edgar’s problem, Chinese Science Bulletin(科学通报), 32(14), 1043-1046, 1987.
  98. Zhenfu Cao. On a problem of Hall, J. Math. Res. & Exposition(数学研究与评论), 7(3), 411 - 413, 1987.
  99. Q. Sun and Zhenfu Cao. On the equation $\sum_{j=1}^s \frac1{x_j} + \frac1{x_1 \cdots x_s} = 1$, J. Math. Res. & Exposition(数学研究与评论), 7(1), 125-128, 1987.
  100. Zhenfu Cao. Solutions of some Diophantine equations, Nature Journal(自然杂志), 10(2), 151, 1987.
  101. Zhenfu Cao. On a problem of Rotkiewicz, J. Math. Res. & Exposition(数学研究与评论), 7(2), 319-320, 318, 1987.
  102. Zhenfu Cao. On the equation $a^x - b^y = 2, \max (a, b) < 100$, Northeast Math. J.(东北数学), 3(1), 112-116, 1987.
  103. Zhenfu Cao. Mordell’s problem on unit fractions, J. Math.(数学杂志), 7(3), 245 - 250, 1987.
  104. Zhenfu Cao. On Fermat’s last theorem, I, Nature Journal(自然杂志), 10(5), 393 - 394, 1987.
  105. Zhenfu Cao. On the equation $Dx^2\pm 1 = y^p, xy \ne 0$, J. Math. Res. & Exposition(数学研究与评论), 7(3), 414, 1987.
  106. Zhenfu Cao. Exponential Diophantine equations of the form $a^x + b^y = c^z$, J. Harbin Inst. Tech.(哈尔滨工业大学学报), (4), 113-121,112, 1987.
  107. R. Liu and Zhenfu Cao. Two new systems of decentralized management of secret key, Journal of China Institute of Communications(通信学报), 8(4), 10-15, 1987.
  108. Q. Sun and Zhenfu Cao. On the Diophantine equation $x^p - y^p = z^2$, Chinese Ann. Math. Ser. A(数学年刊), 7(5), 514-518, 1986.
  109. Zhenfu Cao. A necessary and sufficient condition on which Hall’s problem has a solution, Nature Journal(自然杂志), 9(9), 720, 1986.
  110. Zhenfu Cao. Common solutions of Pell’s equations $x^2 - 2y^2 = 1$ and $y^2 - Dz^2 = 4$, Chinese Science Bulletin(科学通报), 31(6), 476, 1986.
  111. Zhenfu Cao. The equation $x^2 + 2^m = y^n$ and Hugh Edgar’s problem, Chinese Science Bulletin(科学通报), 31(7), 555-556, 1986.
  112. Zhenfu Cao. On the Diophantine equation $a^x + b^y = c^z$, I, Chinese Science Bulletin(科学通报), 31(22), 1688-1690, 1986.
  113. Q. Sun and Zhenfu Cao. On the equation $\sum_{j=1}^s \frac1{x_j} - \frac1{x_1 \cdots x_s} = 1$ and its applications, Sci. Exploration(科学探索), (2), 95, 1986.
  114. Zhenfu Cao. The equation $a^x – b^y = (2p)^z$ and Hugh Edgar’s problem, J. Harbin Inst. Tech.(哈尔滨工业大学学报), (3), 7-11, 1986.
  115. Zhenfu Cao. On the Diophantine equation $x^p - y^p = Dz^2$, Northeast Math. J.(东北数学), 2(2), 219-227, 1986.
  116. Zhenfu Cao. On the Diophantine equation $x^{2n} – Dy^2 = 1$, Chinese Science Bulletin(科学通报), 30(6), 475 , 1985.
  117. Zhenfu Cao. The equation $a^x – b^y = (2p^s)^z$ and Hugh Edgar’s problem, Chinese Science Bulletin(科学通报), 30(14), 1116-1117, 1985.
  118. Z. Xu and Zhenfu Cao. On a problem of Mordell, Chinese Science Bulletin(科学通报), 30(7), 558-559, 1985.
  119. Q. Sun and Zhenfu Cao. On the equation $\frac1{x_1} + \cdots + \frac1{x_s} - \frac1{x_1 \cdots x_s} = 1$ and its applications, Chinese Science Bulletin(科学通报), 30(2), 155, 1985.
  120. Zhenfu Cao. On Hall’s problem, Nature Journal(自然杂志), 8(6), 476-477, 1985.
  121. Q. Sun and Zhenfu Cao. Chinese remainder theorem and computer, Nature Journal(自然杂志), 8(9), 669-670, 1985.
  122. T. Chen and Zhenfu Cao. A discusses on automated analytic systems in intelligent computer, J. Harbin Inst. Tech.(哈尔滨工业大学学报), Computer Sci. Special Issue 96-100, 1985.
  123. Z. Xu and Zhenfu Cao. A new method which find most general integral solutions of the linear Diophantine equation, J. Harbin Inst. Tech.(哈尔滨工业大学学报), Math. Special Issue: 142-150, 1984.
  124. Zhenfu Cao. On the Diophantine equations $x^2+1=2y^2, x^2 –1 = 2Dz^2$, J. Math.(数学杂志), 3(3), 227-235, 1983.
  125. Zhenfu Cao. On the Diophantine equation $x^4 – Dy^2 = 1$, II, J. Harbin Inst. Tech.(哈尔滨工业大学学报), (3), 133-138, 1983.
  126. Z. Dai and Zhenfu Cao. On the Diophantine equation $(2n^2 + 4n + 1)^x + 2(2n(2n + 1))^y = (6n^2 + 4n + 1)^z$, J. Harbin Inst. Tech.(哈尔滨工业大学学报), (4), 96-101, 1982.
  127. Zhenfu Cao. On the Diophantine equation $x^4 – Dy^2 = 1$, J. Harbin Inst. Tech.(哈尔滨工业大学学报), (4), 53-58, 1981.