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由昆明医学会骨科专科分会主办，官渡区人民医院承办的“昆明市第四届ＤＡＡ微创髋关节置换学习班” ２０２０年１１月２２日顺利开班，参加开幕仪式的有骨科专家常敏教授，昆明市卫生健康委科教处李武辉处长，昆明医学会杨冬梅副秘书长，昆明市延安医院熊鹰主任，昆明医学会骨科分会耿承奎主任委员，昆明医科大学第一附属医院骨科李彪教授、昆明医科大学第二附属医院创伤外科袁勇博士等领导和专家。还有来自文山州医院、昆明市第二...
评价改良直接前方入路(DAA)全髋关节置换的临床疗效。方法 对 2017年 1月至 2018年 9月玉林市中西医结合骨科医院骨病科由同一术者完成的应用改良DAA进行初次全髋关节置换术的52例(73髋)患者资料进行随访研究，随访3个月以上，使用Harris髋关节评分量表以及双下肢全长正位片进行临床和影像学方面评价临床效果。
L-DAA: Lattice-Based Direct Anonymous Attestation
Lattice based cryptography Direct Anonymous Attestation Universally Composable security model
2018/5/3
Direct Anonymous Attestation (DAA) is an anonymous digi- tal signature that aims to provide both signer authentication and privacy. DAA was designed for the attestation service of the Trusted Platform...
基于Brickell等的DAA（direct anonymous attestation）方案提出一个支持多商家环境的多重息票系统。新系统将多重息票中的关键元素与抗篡改的TPM（trusted platform module）芯片进行绑定，从而能更有效地阻止用户的共享行为。新系统的构造过程使用了Chow等的服务器辅助签名验证技术、Yang等的自盲化证书技术以及Peng等的区间证明技术，使用户在息票...
In TPM2.0, a single signature primitive is proposed to support
various signature schemes including Direct Anonymous Attestation
(DAA), U-Prove and Schnorr signature. This signature primitive
is imp...
DAA-TZ: An Efficient DAA Scheme for Mobile Devices using ARM TrustZone
DAA Privacy Mobile Devices
2015/12/29
Direct Anonymous Attestation (DAA) has been studied for
applying to mobile devices based on ARM TrustZone. However, current
solutions bring in extra performance overheads and security risks when
ad...
Lightweight Anonymous Authentication with TLS and DAA for Embedded Mobile Devices
Mobile Phones Privacy Anonymity ARM TrustZone
2011/3/10
Although anonymous authentication has been extensively
studied, so far no scheme has been widely adopted in practice. A particular
issue with fully anonymous authentication schemes is that users
ca...
Lightweight Anonymous Authentication with TLS and DAA for Embedded Mobile Devices
cryptographic protocols / Mobile Phones Privacy Anonymity ARM TrustZone
2012/3/29
Although anonymous authentication has been extensively studied, so far no scheme has been widely adopted in practice. A particular issue with fully anonymous authentication schemes is that users canno...
Key Exchange with Anonymous Authentication using DAA-SIGMA Protocol
privacy direct anonymous attestation anonymous authentication
2010/8/26
Anonymous digital signatures such as Direct Anonymous Attestation (DAA) and group signatures have been a fundamental building block for anonymous entity authentication. In this paper, we show how to i...
一种基于DAA的强匿名性门限签名方案
门限签名 匿名表决 直接匿名认证(DAA) 零知识证明 秘密共享
2010/3/8
针对目前大多数门限签名方案不能实现签名成员匿名或匿名效果比弱的问题，该文提出了一种带有子密钥分发中心的强匿名性(n, t)门限签名方案。方案主要基于可信计算组织在其v1.2标准中采用的直接匿名认证(Direct Anonymous Attestation, DAA)方案，以及零知识证明和Feldman门限秘密共享等技术实现。相较已有方案，该方案即使在签名验证者和子密钥分发中心串通的情况下，也能够实...
A Pairing-Based DAA Scheme Further Reducing TPM Resources
Pairing-Based DAA Scheme TPM Resources
2010/2/20
Direct Anonymous Attestation (DAA) is an anonymous signature scheme designed for anonymous
attestation of a Trusted Platform Module (TPM) while preserving the privacy of the device owner. Since TPM h...
A DAA Scheme Requiring Less TPM Resources
direct anonymous attestation trusted platform module bilinear map
2010/1/18
Direct anonymous attestation (DAA) is a special digital sig-
nature primitive, which provides a balance between signer authentication
and privacy. One of the most interesting properties that makes t...
On the Design and Implementation of an Efficient DAA Scheme
Design Implementation Efficient DAA Scheme
2009/12/29
Direct Anonymous Attestation (DAA) is an anonymous digital
signature scheme that aims to provide both signer authentication
and privacy. One of the properties that makes DAA an attractive choice
in...
以2,4-二氯苯氧乙酸(2,4-DAA)和邻菲啰啉(Phen)为原料, 采用水热法合成了一个新的三核锌配合物Zn3(phen)2(2,4-DAA)6. 该配合物属三斜晶系, P1空间群, 晶胞参数a=1.1030(2) nm, b=1.2930(3) nm, c=1.5081(3) nm, α=100.436(3)°, β=110.227(3)°, γ=103.802(3)°, V=1.8760(...
In [17, 18] we presented a pairing based DAA protocol in the asymmetric setting, along
with a “security proof”. Jiangtao Li has pointed out to us an attack against this published protocol,
thus our ...