基于受控隱形傳態(tài)的量子簽名及量子投票
[Abstract]:Digital signature, which plays an important role in cryptography, plays an important role in electronic commerce, democratic election, and the distribution of testamentary property. In recent years, with the rapid development of quantum technology and the continuous improvement of quantum computing ability, classical digital signatures have become insecure; at the same time, the research of quantum cryptography has become more and more popular among scholars. Compared with traditional cryptography, quantum cryptography has a unique property: it satisfies unconditional security and can prevent eavesdropper attack. Based on such security characteristics, quantum cryptography, which has become a hot topic for scholars, has a very important development prospect and significant research significance. In this paper, we mainly study several types of schemes based on controlled teleportation: multi-proxy blind signature; proxy multi-signature; quantum voting protocol. A quantum multi-proxy blind signature scheme based on four-particle entangled states is analyzed. Multiple proxy blind signature refers to blind signature of 1 m: an original signer can delegate the signature right to several proxy signers for signature, and the message signed by the signer is blinded so as to avoid the exposure of sensitive messages. In this paper, a quantum multi-proxy blind signature scheme is designed based on the controlled teleportation theory. Unlike traditional signature schemes, quantum-once-secret and key distribution protocols guarantee security. On the other hand, since the signature scheme uses four-particle entangled states as the communication channel, it saves resources compared with other quantum signature protocols, and the security analysis shows that the scheme satisfies unconditional security. Non-repudiation and blindness. In this paper, two quantum proxy multi-signature schemes based on eight-particle entangled states are proposed, that is, m-1 signature scheme, which allows multiple original signers to delegate to a proxy signer to complete the signature. And in the second scheme, based on the hierarchical physical structure of eight-particle entangled states, we only need three original signers (not six) to complete the proxy signature scheme in the signature phase, which not only enhances the practicability of the proxy signature scheme. And it also improves efficiency. 3. A quantum voting protocol is analyzed. After an impartial organization, CA, anonymously authenticates the legitimate identity of a voter with a quantum identity authentication method of zero-knowledge proof, and under the supervision of the tellers, teleports states via quantum operations. The teller will count the votes successfully and be informed of the votes of the legal voters.
【學位授予單位】:陜西師范大學
【學位級別】:碩士
【學位授予年份】:2016
【分類號】:O413;TN918
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