• <tr id="yyy80"></tr>
  • <sup id="yyy80"></sup>
  • <tfoot id="yyy80"><noscript id="yyy80"></noscript></tfoot>
  • 99热精品在线国产_美女午夜性视频免费_国产精品国产高清国产av_av欧美777_自拍偷自拍亚洲精品老妇_亚洲熟女精品中文字幕_www日本黄色视频网_国产精品野战在线观看 ?

    A Quantum Multi-Proxy Blind Signature Scheme Based on Entangled Four-Qubit Cluster State?

    2018-07-09 06:46:32XuFengNiu牛旭峰JianZhongZhang張建中andShuCuiXie謝淑翠2CollegeofMathematicsandInformationScienceShaanxiNormalUniversityXian709China
    Communications in Theoretical Physics 2018年7期

    Xu-Feng Niu(牛旭峰),Jian-Zhong Zhang(張建中),,? and Shu-Cui Xie(謝淑翠)2College of Mathematics and Information Science,Shaanxi Normal University,Xi’an 709,China

    2School of Science,Xi’an University of Posts and Telecommunications,Xi’an 710121,China

    1 Introduction

    Digital signature is one of the most important parts in cryptography. It is an important technique to authenticate the identity and ensure the integrity of legal messages.It has been widely used in E-voting protocols,E-commerce systems and so on.However,the security of classical signature schemes depends on some computational problems that may be solved using quantum algorithms.[1?2]The security of quantum cryptography relies on the principles of quantum mechanics,thus quantum signature has attracted much attention.In 2001,Gottesman and Chuang proposed the first quantum signature scheme in Ref.[3].Then Buhrman et al.[4]and Barnum et al.[5]made some significant attempts about quantum signature respectively.More recently,some other kinds of quantum signature schemes were presented,such as quantum multiple signature and quantum group signature.[6?7]

    As an important cryptographic primitive,proxy signature was first introduced by Mambo,Usada,and Okamoto in 1996.[8]It allows a proxy signatory on behalf of an original signatory to sign a message.A quantum proxy signature scheme with public verifiability was presented by Zhou et al.[9]More recently,some quantum proxy signature schemes were presented.For example,Xu proposed a novel quantum proxy signature without entanglement.[10]In 2017,Yang et al.implemented a quantum proxy blind signature schemes with Genuine Seven-Qubit Entangled State.[11]In addition,Zeng et al.proposed a quantum proxy blind signature scheme.[12]

    In 1982,a blind signature was introduced by David Chaum.[13]It is called blind signature if the signatory generates a signature without revealing any information of the message.[13]Subsequently,blind quantum signature has attracted much attention.For example,in 2010,Wang et al.proposed a fair quantum blind signature scheme.[14]In 2016,Shao et al.proposed a quantum multi-proxy multiblind-signature scheme combing the requirement for the proxy and blind signature scheme.[15]In addition,Guo et al.proposed a feasible blind quantum signature scheme.[16]

    Our multi-proxy blind signature scheme has a wide application in practical life.For example,a company’s president needs to sign an important and private document when he is temporal absence,he will delegate a group of department managers not a single one to blindly sign the document in order to prevent abuse of the signing authority and avoid exposure of the sensitive information.

    The paper is outlined as follows:In the next section,we introduce the controlled quantum teleportation.In Sec.3,we describe the quantum multi-proxy blind signature scheme in detail.The security analysis and discussion are presented in Sec.4.Finally,conclusions are drawn in Sec.5.

    2 Controlled Quantum Teleportation

    Our multi-proxy blind signature scheme is based on the controlled quantum teleportation,which takes the entangled four-qubit Cluster state as its quantum channel.It is given by

    As shown in Fig.1,this controlled quantum teleportation involves the following three partners:a sender Alice,a controller Charlie,and a receiver Bob.Alice holds particles(1,3),Charlie,and Bob own particle 4 and particle 2,respectively.

    Fig.1 The model of quantum teleportation.

    Suppose that the quantum state of particle carrying message in Alice is

    where the coefficients α and β are unknown and satisfy|α|2+|β|2=1.

    The system quantum state composed of particle M and(1,2,3,4)is given by

    (i)Alice performs a von Neumann measurement on particle M and particles(1,3)with the basiswhere the quantum state of|γi?,(i=1,2,3,4,5,6,7,8)satisfies

    The measurement will collapse the state of|Ψ?M1234into one of the following states

    Then Alice sends her measurement result to Charlie and Bob.

    (ii)Charlie sends particle 4 through a Hadamard gate,the corresponding states in Eq.(5)can be changed into

    (iii)If Charlie agrees the two parties of communication to complete their teleportation,he performs a single particle measurement on particle 4 with the basis{|0?,|1?}.Suppose that Alice’s measurement outcome is|γ1?M13,Charlie’s measurement will collapse particle 2 into one of the following states

    Then Charlie sends his measurement result to Bob.

    (iv)Because of the entanglement property,[17?24]Bob can perform an appropriate unitary operator on particle 2 to rebuild the original state|ψ?Maccording to Alice’s,Charlie’s measurement results.The corresponding relationship between the measurement results and Bob’s unitary transformations is in Table 1.

    Table 1 The relationship between Alice’s,Charlie’s measurement outcomes,and Bob’s operation.

    3 Quantum Multi-Proxy Blind Signature Scheme

    In our scheme,four participants are defined as follows.

    (i)Alice:the massage owner;(ii)Uj:one member of proxy signers(j=1,2,...,t);(iii)Charlie:the original signer;(iv)Bob:the verifier.

    The detailed procedure of our scheme can be described as follows.

    3.1 Initial Phase

    (i)Alice shares secret key KABwith Bob,KAUj(j=1,2,...,t)with signer Uj,respectively. In addition,Bob establishes secret key KBCwith Charlie,KBUjwith Uj(j=1,2,...,t).These distribution tasks can be fulfilled via QKD protocols,which have been proved unconditionally security.[25?28]

    (ii)Ujprepares Q(Q?n)EPR pairs such that

    where the superscripts Aiand Biindicate the i-th of two entangled particles.And in each EPR pair,Ujsends particle Aito Alice,while he keeps particle Bi.In addition,Charlie generates TN(TN?tn)four-qubit Cluster states as showed in Eq.(1)to be the quantum channel.He sends particle 2 to Bob,(1,3)to Ujwhile leaving the last one 4 to himself.The schematic of transmission on the i-th particles is shown in Fig.2.

    (iii)To guarantee the security of the quantum channel,Charlie and Ujarrange eavesdropping checks.On the one hand,Charlie chooses TN-tn groups of particle 4 randomly,remembers the positions and performs a measurement with the basis{|0?,|1?},then Charlie publishes the positions.According to Charlie’s published positions,Ujperforms measurement on the particles(1,3)with the basis{|00?,|01?,|10?,|11?},Bob performs measurement on the particle 2 with the basis{|0?,|1?}.After that,Charlie,Ujand Bob all declare their measurement outcomes.Here,the declared order of them should be random.If their measurement outcomes satisfy the relationship in Table 2 or error rate is less than the threshold value,the quantum channel is safe.Otherwise,they give up this process.On the other hand,Ujalso arranges eavesdropping check by randomly choosing Q-n EPR pairs to ensure the safety of the quantum channel between Ujand Alice.This process is similar to the above mentioned,we do not repeat the details.

    Fig.2 Schematic of transmission on the i-th particles.

    Table 2 The relationship between Charlie’s,Uj’s,and Bob’s measurement results.

    3.2 Blind the Message Phase

    (i)Alice transforms her message into an n-bit message string m={m(1),m(2),...,m(n)}={m(i),i=1,2,...,n},where m(i)∈{0,1}.

    (ii)Alice measures her particle sequence according to message m.If m(i)=0,she measures particle Aiwith the basis{|0?,|1?}.Otherwise,she measures under the basis{|+?,|??}.The measurement results can be denoted as m′={m′(1),m′(2),...,m′(n)}={m′(i),i=1,2,...,n},where m′(i) ∈ {|0?,|1?,|+?,|??}and Alice transforms the measurement results into classical binary sequence M={M(1),M(2),...,M(n)}={M(i),i=1,2,...,n},where M(i)∈{00,01,10,11}.The measuring and encoding rules for quantum states are shown in Table 3.Now,message m(n-bit)could be blinded as M(2n-bit).

    Table 3 The measuring and encoding rules for quantum states.

    (iii)Alice gets the secret message M′by encrypting M with one-time pad and key KAB,we have

    Alice sends M′to Bob.

    3.3 Authorizing and Signing Phase

    We choose a proxy signer Ujon behalf of all proxy signers to complete this signature.

    (i)In order to distinguish every proxy signers,Alice generates a unique serial SN,and transforms it to a quantum state sequence?in the basisThen she encryptswith key KAUj,and sends the secret state to Ujvia a quantum channel.

    (ii) After Ujreceived EKAUj,he decrypts it to gain?. Ujperforms a von Neumann measurement on particle Biand particles(1,3),he gains βUj=by combining the measurement results and|SNj?,now βUjis Uj’s proxy signature of the blinded message M.Then Ujencrypts βUjwith key KBUjto get the message SUj=EKBUj(βUj),he sends it to Bob and also sends βUjto Charlie as his proxy request.

    (iii)After receiving Uj’s proxy request βUj,Charlie will help Ujand Bob to complete their teleportation if he agrees Ujto sign the message. Charlie operates a Hadamard gate on particle 4 and then he measures particle 4 with the basis,and he combines the measurement result β(i)4withto get

    where β(i)4∈.Then he encrypts βCjwith key KBCto get the message SCj=EKBC(βCj),he sends it to Bob.If Charlie does not agree Ujto sign the message,he terminates this teleportation.

    3.4 Verifying Phase

    (i)Bob decrypts M′to acquire the message M.

    (ii)Bob gets βUjand βCjby using KBUjand KBCto decrypt SUjand SCjrespectively.Then Bob performs a proper unitary operator on particle 2 to rebuild the unknown state.In Table 1,we show the relationship between Uj’s Charlie’s measurement results and Bob’s unitary transformation(we replace Alice’s measurement results by Uj’s).

    (iii)Bob encodes particle 2 to get a two bits classical string c(j)by using the similar strategy as shown in Subsec.3.2.If c(j)=M,this signature is valid,otherwise,he rejects it.

    (iv) Bob collects{(SUj,SCj),j=1,2,...,t},Then according to Subsec.3.2,he gets the message{c(j),j=1,2,...,t}. If c(j)=M (j= 1,2,...,t),Bob will ensure this signature and get the final signature S ={βU1,βU2,...,βUt},otherwise,he terminates the signature.

    4 Security Analysis and Discussion

    In this section,we will prove that this scheme satisfies the properties of blindness,undeniability,and unforgeability.

    4.1 Message’s Blindness

    According to Subsec.3.2,the message m has been transformed into m′={m′(1),m′(2),...,m′(n)},where each m′(i) ∈ {|0?,.If Ujattempts to get the message m,the only way is to perform measurements.However,he has no idea of Alice’s measurement basis of particle Ai,which means Ujcan not acquire m′and m.Therefore,each proxy signers can not know the content of the message m when he signs it.This means the message is blind for proxy signers.

    4.2 Impossibility of Denial

    In this scheme,we prove that Charlie can not deny his delegation and Ujcan not disavow his signature.According to Step 2 in Subsec.3.2,Bob decrypts messages SCj=EKBC(βCj)with keys KBCcan get Charlie’s authorization βCj.Similarly,Bob can get Uj’s proxy request and his serial number?.All keys are distributed via QKD protocols,which have been proved unconditionally and all messages are sent through the secure quantum channel.Therefore,Charlie can not deny his delegation and Ujcan not disavow his signature.

    4.3 Impossibility of Forgery

    In the following,we will show that our scheme is secure against the forgery of both internal attacker and outsider attacker.First of all,we demonstrate that it is impossible for the dishonest participants to forge message and signature.Suppose Bob is dishonest and he attempts to forge message or signature,according to Subsec.3.2,Bob can not obtain particle Ai,he has no idea of Alice’s measurement basis.It means that Bob can not get the true signature.If Bob randomly uses basisorhe will obtain the correct results at a probability 1/2n,and this probability will vanish to zero if n is large enough.Therefore,the dishonest inner attacker can not forge message and signature.Secondly,we indicate that it is impossible for the outsider attacker Eve to forge signature.Eve can forge signature successfully unless he has the secret key KBUj.However,the security of the shared key KBUjis guaranteed by unconditionally secure QKD protocols.That is,Eve’s forgery can be avoided.

    5 Conclusion

    In this paper,we propose a quantum multi-proxy blind signature scheme,which uses entangled four-qubit Cluster state as quantum channel.The security of our scheme is guaranteed by the quantum one-time pad and quantum key distribution,which is different from the previous signature schemes in classical cryptography.In addition,different from some existing quantum signature schemes,our scheme has some advantages.Firstly,our scheme is based on entangled four-qubit Cluster state,which needs less resource rather than the quantum signature proposed in Refs.[29–30].Secondly,differing from the quantum blind signature scheme,[31]our scheme has arranged eavesdropping checks to ensure the security.Thirdly,our scheme has a stronger security because of the cluster state’s maximum connectedness and persistency of entanglement.Fourthly,our scheme adopts von Neumann measurement and single particle measurement,which are easy to implement with current technologies and experimental conditions.However,the received state’s fidelity may reduce because of the experimental environment,and this will be a question to be studied further.

    [1]P.Shor,SIAM J.Comput.26(1997)1484.

    [2]L.K.Grover,arXiv:quant-ph/9605043.

    [3]I.L.Chuang,D.Gottesman,arXiv:quant-ph/0105032.

    [4]H.Buhrman,R.Cleve,J.Watrous,et al.,Phys.Rev.Lett.87(2001)167902.

    [5]H.Buhrman,C.Crepeau,D.Gottesman,et al.,Authentication of Quantum Massages,IEEE Comput.Soc.Press,Canada(2002).

    [6]X.J.Wen,Y.Tian,L.P.Ji,and X.M.Niu,Phys.Scr.81(2010)055001.

    [7]Y.Tian,H.Chen,S.F.Ji,et al.,Opt.Quant.Electron.46(2014)769.

    [8]M.Mambo,K.Usada,and E.Okamoto,IEICE Trans.Fuan.Electr.79(1996)1338.

    [9]J.X.Zhou,Y.J.Zhou,X.X.Niu,and Y.X.Yang,Sci.China Ser.G.54(2011)1828.

    [10]G.B.Xu,Int.J.Theor.Phys.54(2015)2605.

    [11]Y.Y.Yang,S.C.Xie,and J.Z.Zhang,Int.J.Theor.Phys.56(2017)2293.

    [12]C.Zeng,J.Z.Zhang,and S.C.Xie,Int.J.Theor.Phys.56(2017)1762.

    [13]D.Chaum,Lect.Notes.Comput.Sc.15(1983)199.

    [14]T.Y.Wang and Q.Y.Wen,Chin.Phys.B 19(2010)66.

    [15]A.X.Shao,J.Z.Zhang,and S.C.Xie,Int.J.Theor.Phys.55(2016)5216.

    [16]W.Guo,J.Z.Zhang,Y.P.Li,et al.,Int.J.Theor.Phys.55(2016)3524.

    [17]J.S.Bell,Physica 1(1964)195.

    [18]N.Gisin,Phys.Lett.A 154(1991)201.

    [19]S.Popescu and D.Rohrlich,Phys.Lett.A 166(2016)293.

    [20]R.Chaves,Phys.Rev.Lett.116(2016)010402.

    [21]D.Rosset,C.Branciard,T.J.Barnea,et al.,Phys.Rev.Lett.116(2016)010403.

    [22]N.Gisin,Q.Mei,A.Tavakoli,et al.,Phys.Rev.A 96(2017)020304(R).

    [23]M.X.Luo,Phys.Rev.Lett.120(2018)140402.

    [24]M.J.Hu,Z.Y.Zhou,X.M.Hu,et al.,arXiv:quantph/1609.01863.

    [25]P.Shor and J.Preskill,Phys.Rev.Lett.85(2000)441.

    [26]D.Mayers,J.Assoc.:Comput.Math.48(2001)351.

    [27]H.K.Lo,J.Phys.A:Math.Gen.34(2012)6957.

    [28]H.Inamon,N.Lutkenhaus,and D.Mayers,Eur.Phys.J.D.41(2007)599.

    [29]H.J.Cao,Y.Y.Zhu,and P.F.Li,Int.J.Theor.Phys.53(2014)419.

    [30]H.J.Cao,Y.F.Yu,Q.Song,and L.X.Gao,Int.J.Theor.Phys.54(2015)1325.

    [31]L.Fan,Int.J.Theor.Phys.55(2016)1558.

    国产高清videossex| 婷婷六月久久综合丁香| 美女免费视频网站| 97人妻精品一区二区三区麻豆| 男人舔女人下体高潮全视频| 国产精品av久久久久免费| 亚洲欧美日韩卡通动漫| 亚洲av电影不卡..在线观看| 亚洲人成网站高清观看| 日本黄色视频三级网站网址| 久久久成人免费电影| 一夜夜www| av视频在线观看入口| 亚洲人成伊人成综合网2020| 日韩大尺度精品在线看网址| 1000部很黄的大片| 变态另类丝袜制服| 国产麻豆成人av免费视频| 日本一本二区三区精品| av在线蜜桃| 岛国视频午夜一区免费看| 欧美激情在线99| 美女高潮的动态| 少妇的丰满在线观看| 亚洲av成人一区二区三| 男女午夜视频在线观看| 午夜免费观看网址| 好男人在线观看高清免费视频| 午夜久久久久精精品| 成年版毛片免费区| 国产免费av片在线观看野外av| 欧美成人性av电影在线观看| 国产久久久一区二区三区| 99国产精品一区二区三区| 国产精品影院久久| 中文字幕人妻丝袜一区二区| 久久性视频一级片| 高潮久久久久久久久久久不卡| 女同久久另类99精品国产91| 亚洲精品色激情综合| 这个男人来自地球电影免费观看| 黑人欧美特级aaaaaa片| 欧美一区二区精品小视频在线| 在线国产一区二区在线| 12—13女人毛片做爰片一| 欧美黄色片欧美黄色片| 十八禁人妻一区二区| 精品久久久久久久久久久久久| 欧美日韩精品网址| 国产又色又爽无遮挡免费看| 51午夜福利影视在线观看| 国产亚洲欧美98| 亚洲av片天天在线观看| 欧美又色又爽又黄视频| 亚洲精品国产精品久久久不卡| 午夜精品在线福利| 成年女人毛片免费观看观看9| 精品国产乱子伦一区二区三区| 在线观看66精品国产| 国内揄拍国产精品人妻在线| 国模一区二区三区四区视频 | 悠悠久久av| 亚洲,欧美精品.| 国产成人影院久久av| 国产人伦9x9x在线观看| 全区人妻精品视频| 亚洲国产欧洲综合997久久,| 亚洲欧美日韩高清专用| 国产伦精品一区二区三区四那| 悠悠久久av| 国产av不卡久久| 国产精华一区二区三区| 免费一级毛片在线播放高清视频| 女人高潮潮喷娇喘18禁视频| 中文字幕熟女人妻在线| 欧美一级毛片孕妇| 欧美日韩瑟瑟在线播放| 久久中文看片网| 美女cb高潮喷水在线观看 | 九九热线精品视视频播放| 亚洲人与动物交配视频| 欧美乱色亚洲激情| 无遮挡黄片免费观看| 香蕉丝袜av| 久久久国产成人精品二区| 特级一级黄色大片| 国产蜜桃级精品一区二区三区| 嫩草影院入口| 亚洲欧美日韩高清在线视频| 国产精品久久久久久亚洲av鲁大| 99国产综合亚洲精品| 两人在一起打扑克的视频| 亚洲成av人片在线播放无| 国产精品久久久久久亚洲av鲁大| 亚洲av第一区精品v没综合| 色视频www国产| 欧美日韩国产亚洲二区| 国产真人三级小视频在线观看| 最近最新中文字幕大全免费视频| 午夜精品久久久久久毛片777| 操出白浆在线播放| 怎么达到女性高潮| 免费看光身美女| 日韩免费av在线播放| 岛国视频午夜一区免费看| 亚洲熟妇熟女久久| 最近最新免费中文字幕在线| 精品欧美国产一区二区三| 毛片女人毛片| 成人18禁在线播放| 欧美乱色亚洲激情| 国产精品影院久久| 亚洲精品色激情综合| 免费大片18禁| 日韩有码中文字幕| svipshipincom国产片| 久久精品国产综合久久久| 成年版毛片免费区| 嫩草影视91久久| 久久精品aⅴ一区二区三区四区| 久久婷婷人人爽人人干人人爱| 最新中文字幕久久久久 | 51午夜福利影视在线观看| 亚洲欧美日韩卡通动漫| 狠狠狠狠99中文字幕| 男人和女人高潮做爰伦理| 欧美3d第一页| 亚洲天堂国产精品一区在线| 国产熟女xx| 亚洲中文字幕一区二区三区有码在线看 | 黄片大片在线免费观看| 人妻丰满熟妇av一区二区三区| 精品电影一区二区在线| 免费人成视频x8x8入口观看| 99精品在免费线老司机午夜| av国产免费在线观看| 免费搜索国产男女视频| 久久午夜综合久久蜜桃| av天堂在线播放| 观看美女的网站| 亚洲国产精品久久男人天堂| 午夜福利高清视频| 岛国视频午夜一区免费看| 少妇裸体淫交视频免费看高清| 夜夜爽天天搞| 网址你懂的国产日韩在线| 久99久视频精品免费| 女生性感内裤真人,穿戴方法视频| 亚洲国产精品sss在线观看| 欧美日本视频| 男女那种视频在线观看| 久久精品国产99精品国产亚洲性色| 精品欧美国产一区二区三| 久久中文字幕一级| 男人舔女人下体高潮全视频| 在线观看美女被高潮喷水网站 | 久久亚洲真实| 国产精品一区二区免费欧美| 波多野结衣高清无吗| 亚洲无线在线观看| 两人在一起打扑克的视频| 免费在线观看视频国产中文字幕亚洲| 国产伦精品一区二区三区视频9 | 99在线视频只有这里精品首页| 啦啦啦韩国在线观看视频| 日韩人妻高清精品专区| 51午夜福利影视在线观看| 久久久久久久精品吃奶| 校园春色视频在线观看| 老汉色∧v一级毛片| 亚洲国产欧美人成| 人妻久久中文字幕网| 一二三四在线观看免费中文在| 久久精品夜夜夜夜夜久久蜜豆| 亚洲国产欧美一区二区综合| 日日摸夜夜添夜夜添小说| 午夜免费成人在线视频| 久久精品91无色码中文字幕| 亚洲av中文字字幕乱码综合| 男女做爰动态图高潮gif福利片| 欧美黑人巨大hd| 国产又黄又爽又无遮挡在线| 三级男女做爰猛烈吃奶摸视频| 深夜精品福利| 色视频www国产| 国产精品一区二区三区四区免费观看 | 一个人看视频在线观看www免费 | 国产欧美日韩一区二区精品| 熟妇人妻久久中文字幕3abv| 亚洲av免费在线观看| 国产精品美女特级片免费视频播放器 | 国产精品免费一区二区三区在线| 在线免费观看不下载黄p国产 | 免费观看的影片在线观看| 99精品在免费线老司机午夜| 少妇人妻一区二区三区视频| 成年人黄色毛片网站| 一区二区三区国产精品乱码| 国产高清激情床上av| 青草久久国产| 一个人看视频在线观看www免费 | 国产成人一区二区三区免费视频网站| 老司机在亚洲福利影院| 久久香蕉国产精品| www.精华液| 国产一级毛片七仙女欲春2| 国产精品日韩av在线免费观看| 又爽又黄无遮挡网站| av福利片在线观看| 90打野战视频偷拍视频| 亚洲欧洲精品一区二区精品久久久| 1000部很黄的大片| 亚洲aⅴ乱码一区二区在线播放| 真实男女啪啪啪动态图| 天天躁狠狠躁夜夜躁狠狠躁| 午夜精品在线福利| 国内精品一区二区在线观看| 九色成人免费人妻av| 欧美中文日本在线观看视频| 亚洲一区二区三区色噜噜| 久久久久久久午夜电影| 在线播放国产精品三级| 精品人妻1区二区| 免费搜索国产男女视频| 少妇的逼水好多| 国产又色又爽无遮挡免费看| 一进一出抽搐动态| 在线观看66精品国产| 亚洲av成人av| 精品久久久久久成人av| 97碰自拍视频| 成人无遮挡网站| 国产av麻豆久久久久久久| 日韩欧美精品v在线| 桃红色精品国产亚洲av| 不卡av一区二区三区| 岛国视频午夜一区免费看| 首页视频小说图片口味搜索| 免费在线观看影片大全网站| 久久久久国内视频| 特级一级黄色大片| 亚洲精品粉嫩美女一区| 亚洲第一电影网av| 色在线成人网| 亚洲人成电影免费在线| 成人特级黄色片久久久久久久| 嫩草影院精品99| 成人18禁在线播放| 亚洲精品一区av在线观看| 日本 欧美在线| 亚洲av片天天在线观看| 岛国视频午夜一区免费看| 成人鲁丝片一二三区免费| 亚洲人成网站在线播放欧美日韩| 一个人免费在线观看电影 | 久久久精品欧美日韩精品| 伦理电影免费视频| 亚洲成人精品中文字幕电影| 精品免费久久久久久久清纯| 亚洲欧洲精品一区二区精品久久久| 亚洲专区中文字幕在线| 久久久久久大精品| 法律面前人人平等表现在哪些方面| 欧美一区二区精品小视频在线| 在线观看美女被高潮喷水网站 | 别揉我奶头~嗯~啊~动态视频| 国产精品乱码一区二三区的特点| 亚洲无线在线观看| 啦啦啦韩国在线观看视频| 热99在线观看视频| 女人被狂操c到高潮| 国产高潮美女av| 亚洲黑人精品在线| 又黄又粗又硬又大视频| 视频区欧美日本亚洲| 高清在线国产一区| 99re在线观看精品视频| 97超级碰碰碰精品色视频在线观看| 中文亚洲av片在线观看爽| 精品国产乱码久久久久久男人| 日本一本二区三区精品| 香蕉av资源在线| 桃色一区二区三区在线观看| 18禁观看日本| 一本一本综合久久| 国产亚洲av高清不卡| а√天堂www在线а√下载| 国产精品电影一区二区三区| 亚洲,欧美精品.| 老司机午夜福利在线观看视频| 我的老师免费观看完整版| 99国产精品一区二区蜜桃av| 国产成+人综合+亚洲专区| 国产一区二区在线av高清观看| 亚洲欧洲精品一区二区精品久久久| 国产成人系列免费观看| 免费在线观看成人毛片| 一进一出抽搐gif免费好疼| 又大又爽又粗| 国产乱人伦免费视频| 偷拍熟女少妇极品色| 亚洲在线观看片| 国产免费av片在线观看野外av| 国产精品亚洲av一区麻豆| 每晚都被弄得嗷嗷叫到高潮| 后天国语完整版免费观看| 国语自产精品视频在线第100页| 天天添夜夜摸| 一区二区三区国产精品乱码| 亚洲中文av在线| 国产综合懂色| 久久这里只有精品中国| 亚洲第一欧美日韩一区二区三区| 精品人妻1区二区| 午夜精品久久久久久毛片777| 亚洲专区国产一区二区| 亚洲国产欧美一区二区综合| 精品福利观看| 欧美黑人巨大hd| 日本免费一区二区三区高清不卡| 毛片女人毛片| 国产午夜福利久久久久久| 淫秽高清视频在线观看| 国内精品久久久久久久电影| 搡老熟女国产l中国老女人| 国产精品影院久久| 变态另类丝袜制服| 久久久国产成人免费| 看片在线看免费视频| 男人舔奶头视频| 琪琪午夜伦伦电影理论片6080| 亚洲五月天丁香| 丰满人妻熟妇乱又伦精品不卡| 曰老女人黄片| 国产欧美日韩一区二区三| 国产亚洲av嫩草精品影院| 亚洲 欧美一区二区三区| 亚洲一区二区三区色噜噜| 热99在线观看视频| 久99久视频精品免费| 欧美乱码精品一区二区三区| 男女下面进入的视频免费午夜| 亚洲欧美日韩高清专用| 一级黄色大片毛片| 丝袜人妻中文字幕| 又紧又爽又黄一区二区| 性色avwww在线观看| 黄色日韩在线| 欧美黑人巨大hd| 亚洲国产精品合色在线| 少妇裸体淫交视频免费看高清| 亚洲国产欧美网| www.999成人在线观看| 天堂影院成人在线观看| www日本黄色视频网| 亚洲色图 男人天堂 中文字幕| 亚洲av中文字字幕乱码综合| 久久久久久大精品| 欧美日本视频| 欧美日韩乱码在线| 搡老熟女国产l中国老女人| 综合色av麻豆| 看黄色毛片网站| 老汉色av国产亚洲站长工具| 啦啦啦观看免费观看视频高清| 一进一出好大好爽视频| 日本三级黄在线观看| 成人三级黄色视频| 亚洲第一欧美日韩一区二区三区| 午夜福利欧美成人| 色综合欧美亚洲国产小说| 色在线成人网| 国产v大片淫在线免费观看| 女人高潮潮喷娇喘18禁视频| xxxwww97欧美| 国产三级在线视频| 欧美黄色淫秽网站| 无遮挡黄片免费观看| x7x7x7水蜜桃| 午夜免费成人在线视频| 国产单亲对白刺激| 国产不卡一卡二| 性欧美人与动物交配| 国产av在哪里看| 亚洲成a人片在线一区二区| 国产av在哪里看| 亚洲成a人片在线一区二区| 婷婷精品国产亚洲av在线| 狂野欧美白嫩少妇大欣赏| ponron亚洲| 国产欧美日韩一区二区精品| 欧美+亚洲+日韩+国产| 无人区码免费观看不卡| 亚洲精品在线观看二区| 久久精品国产99精品国产亚洲性色| 亚洲欧美日韩无卡精品| 美女扒开内裤让男人捅视频| 国产精品香港三级国产av潘金莲| 伦理电影免费视频| 男女床上黄色一级片免费看| 国产精品野战在线观看| 黄色视频,在线免费观看| 午夜日韩欧美国产| av在线天堂中文字幕| 亚洲午夜理论影院| 欧美性猛交黑人性爽| 一区二区三区国产精品乱码| 我要搜黄色片| 国内精品一区二区在线观看| 麻豆av在线久日| 日本成人三级电影网站| 最近最新免费中文字幕在线| 午夜两性在线视频| 真人一进一出gif抽搐免费| 国产极品精品免费视频能看的| 午夜免费激情av| 久久香蕉精品热| 午夜精品在线福利| 嫩草影视91久久| 精品一区二区三区四区五区乱码| 国产精品久久久久久亚洲av鲁大| 欧美中文日本在线观看视频| 热99在线观看视频| 两个人看的免费小视频| 美女黄网站色视频| 日韩大尺度精品在线看网址| 久久久久久国产a免费观看| 午夜日韩欧美国产| 欧美成人性av电影在线观看| 精品福利观看| 欧美乱妇无乱码| 精品电影一区二区在线| 欧美黄色淫秽网站| 亚洲美女视频黄频| 久久国产精品人妻蜜桃| 99在线人妻在线中文字幕| 久久精品91蜜桃| www.www免费av| 人妻夜夜爽99麻豆av| bbb黄色大片| 精品电影一区二区在线| 国产单亲对白刺激| 色综合亚洲欧美另类图片| 亚洲人成网站高清观看| 90打野战视频偷拍视频| 国内精品一区二区在线观看| 又大又爽又粗| 国内少妇人妻偷人精品xxx网站 | 精品国产三级普通话版| 99热这里只有是精品50| 露出奶头的视频| 久久久久免费精品人妻一区二区| 日本a在线网址| 欧美不卡视频在线免费观看| 亚洲成av人片免费观看| 日韩人妻高清精品专区| 99久久综合精品五月天人人| 18禁国产床啪视频网站| 亚洲 欧美一区二区三区| 国产一区二区三区在线臀色熟女| 成人国产综合亚洲| 毛片女人毛片| 午夜免费成人在线视频| 蜜桃久久精品国产亚洲av| 亚洲激情在线av| 亚洲欧美日韩高清在线视频| 国产精品爽爽va在线观看网站| 免费看光身美女| 又大又爽又粗| 欧美+亚洲+日韩+国产| 亚洲精品456在线播放app | 麻豆一二三区av精品| 国产精品精品国产色婷婷| 亚洲欧美日韩东京热| 最近最新免费中文字幕在线| 12—13女人毛片做爰片一| 国产视频内射| 精品国产三级普通话版| 99热精品在线国产| 俄罗斯特黄特色一大片| 亚洲av五月六月丁香网| 99在线视频只有这里精品首页| av中文乱码字幕在线| 亚洲男人的天堂狠狠| 美女黄网站色视频| 日韩欧美在线乱码| 一个人观看的视频www高清免费观看 | 国产私拍福利视频在线观看| 小蜜桃在线观看免费完整版高清| 亚洲欧美一区二区三区黑人| 亚洲人成网站在线播放欧美日韩| 午夜激情福利司机影院| 欧美在线黄色| 观看免费一级毛片| 舔av片在线| 国产精品一区二区精品视频观看| 成人性生交大片免费视频hd| 亚洲成人精品中文字幕电影| 怎么达到女性高潮| 国产精品九九99| 成人永久免费在线观看视频| 中亚洲国语对白在线视频| 国产高潮美女av| 国产单亲对白刺激| 久久久久久久久久黄片| 好看av亚洲va欧美ⅴa在| 欧美激情在线99| 国产一区二区三区视频了| 夜夜夜夜夜久久久久| 亚洲片人在线观看| 国内精品久久久久精免费| 视频中文字幕在线观看| 亚洲电影在线观看av| 亚洲人与动物交配视频| 日韩中字成人| 亚洲人成网站高清观看| 青青草视频在线视频观看| 国产精品一区二区在线观看99 | 国产精品久久久久久久久免| 国产精品人妻久久久影院| 色5月婷婷丁香| 18禁在线无遮挡免费观看视频| 你懂的网址亚洲精品在线观看 | 精品国产三级普通话版| 国产精品野战在线观看| 色播亚洲综合网| 91久久精品电影网| 欧美极品一区二区三区四区| 高清av免费在线| 熟妇人妻久久中文字幕3abv| 亚洲最大成人手机在线| 亚洲精品久久久久久婷婷小说 | 看免费成人av毛片| 亚洲乱码一区二区免费版| 18禁在线播放成人免费| 亚洲欧美成人精品一区二区| 久久久久久大精品| 91精品一卡2卡3卡4卡| 偷拍熟女少妇极品色| 成人高潮视频无遮挡免费网站| 亚洲国产精品成人综合色| 国产精品1区2区在线观看.| 午夜福利在线观看吧| 国产老妇女一区| 久久韩国三级中文字幕| 九草在线视频观看| 一区二区三区四区激情视频| 日韩国内少妇激情av| 一夜夜www| 搞女人的毛片| 乱人视频在线观看| 久久精品国产亚洲av涩爱| 亚洲欧美日韩卡通动漫| 国产精品99久久久久久久久| 精品午夜福利在线看| 国产综合懂色| 国产成人精品婷婷| 日本三级黄在线观看| 日本色播在线视频| 久久草成人影院| 久久婷婷人人爽人人干人人爱| 国产色爽女视频免费观看| 有码 亚洲区| 国产又色又爽无遮挡免| 免费观看人在逋| 国产黄片美女视频| 最后的刺客免费高清国语| 国内精品美女久久久久久| 热99re8久久精品国产| 亚洲国产精品sss在线观看| 高清毛片免费看| 99热网站在线观看| 成人欧美大片| 一夜夜www| 亚洲中文字幕日韩| 在线免费观看不下载黄p国产| 国产 一区精品| 亚洲图色成人| 国产精品人妻久久久影院| 看黄色毛片网站| 久久精品久久精品一区二区三区| 亚洲av二区三区四区| 精品欧美国产一区二区三| 国产三级中文精品| 免费看av在线观看网站| 国产 一区精品| 国产精品蜜桃在线观看| 少妇人妻一区二区三区视频| 免费看av在线观看网站| 菩萨蛮人人尽说江南好唐韦庄 | 夜夜看夜夜爽夜夜摸| 99热6这里只有精品| 久久精品国产自在天天线| 国产乱人偷精品视频| 亚洲av福利一区| 欧美变态另类bdsm刘玥| 天美传媒精品一区二区| 白带黄色成豆腐渣| 亚洲精品国产av成人精品| 天天躁夜夜躁狠狠久久av| 亚洲精品456在线播放app| 99热网站在线观看| 秋霞伦理黄片| 国产黄色小视频在线观看| 你懂的网址亚洲精品在线观看 | 黄片无遮挡物在线观看| 国产久久久一区二区三区| 长腿黑丝高跟| 亚洲,欧美,日韩| 18禁在线播放成人免费| 日韩国内少妇激情av| 亚洲欧美日韩卡通动漫| 少妇熟女aⅴ在线视频| 欧美成人a在线观看| 一区二区三区高清视频在线|