HMAC

The anti-rutted performance of High Modulus Asphalt Concrete ( HMAC) is very excellent, which is generally focused by domestic and international professional personage.

高模量沥青混凝土（High Modulus Asphalt Concrete，简写为HMAC）以其优良的抗车辙性能，受到国内外公路界专业人士的普遍关注。

It combines the secret, the ASCII label, and the seed data we give it by using the keyed-Hash Message Authentication Code ( HMAC) versions of both MD5 and SHA-1 hash functions.

它使用基于哈希的消息验证码（HMAC）的MD5和SHA-1两种哈希函数将密钥，ASCII字符以及我们给的种子结合起来。

The Keys to the Problem Then it discusses HMAC algorithm and generation of message authentication keys.

探讨了CM和CMTS中密钥使用的问题。研究消息鉴别码的HMAC算法和消息鉴别码密钥的产生。

Secondly, through uniaxial static load creep test and compressive resilience modulus test, material models and parameters of common asphalt concrete and HMAC are obtainsed on data processing and regression analysis.

其次，通过对单轴静载蠕变试验和抗压回弹模量试验结果的处理及回归分析，得出普通沥青混凝土和HMAC材料的粘弹性参数。

Online Test System Based on HMAC Password Authentication

基于HMAC口令认证的在线考试系统

This article mainly presents an Hash Message Authentication Code ( HMAC/ SHA-1) IP core based on the Trusted Platform Module ( TPM) architecture with pre-layout synthesis and FPGA verification.

本文针对可信计算平台模块（TPM）的设计规范，设计了一款针对TPM应用的单向散列函数消息验证码生成模块（HMAC/SHA-1IP），并进行了预综合和FPGA验证。

A Mechanism for Message Authentication using HMAC-SHA 1

基于HMAC-SHA1算法的消息认证机制

Based on the Keyed-Hashing for Message Authentication ( HMAC) with Key Collection Exposure, Dynamic Probabilistic Packet Marking and modern algebraic theoretics, a new Authenticated IP Traceback Scheme against DRDoS/ DDoS was proposed.

利用基于密钥集序列的消息认证码理论，以动态概率包标记和现代代数理论为基础，针对当前危害甚大的分布式反射拒绝服务攻击，提出了一种新的基于认证的源IP追踪方案。

Ideally, use hash-based message authentication code ( HMAC) because it's the most secure.

理想的情况下，使用基于哈布的消息验证码（HMAC），因为它最安全。

HMAC/ SHA-1 IP Design Based on TPM Specification

基于TPM规范的HMAC/SHA-1IP设计

The protocol uses HMAC to guarantee the client being active, then protects leasing from attacks.

该协议灵活运用HMAC，确保代理每次租借时客户总是激活的，从而尽量避免恶意攻击。

The definition standards of HMAC is proposed and it suggested that pavement structure design should adopt dynamic modulus at 45 ℃ as parameter. This study proposed reliable data for the wide application of long-life pavement. 4.

提出了高模量沥青混凝土的界定标准，并建议路面结构设计采用45℃的动态模量作为设计参数，为柔性路面设计以及长寿命路面在我国的广泛研究与应用提供了可借鉴的基础资料。

Implementation of HMAC_SHA1_96 Based on FPGA

基于FPGA的HMAC SHA196算法设计与实现

SRTP uses efficient AES algorithm to guarantee confidentiality of RTP payload, and uses HMAC-SHA1 algorithm to provide data integrity as well as to prevent hostile replay hacking.

SRTP协议采用高效的AES算法来保证RTP载荷的机密性，并使用HMAC-SHA1算法提供数据的完整性保护，同时能够防止恶意的重放攻击。

The encryption file system uses message digest technology, digital signature technology and HMAC to protect the integration of the data.

使用消息摘要技术、数字签名技术和HMAC来保证数据的完整性；使用公钥密码技术来对对称密钥和HMAC密钥进行加密保护；

MD5, SHA, HMAC three encryption algorithms can be described as non-reversible encryption and decryption of the encryption method is not, we call one-way encryption algorithm.

SHA、HMAC这三种加密算法，可谓是非可逆加密，就是不可解密的加密方法，我们称之为单向加密算法。

Fifthly, in order to decrease the waste of system performance in file integrity verifying, an integrity verifying mechanism based on secondary HMAC is introduced.

第五，提出了一种基于二级HMAC的文件完整性校验机制，有效降低了完整性校验时系统性能损耗。

The analysis and experiment results show that, compared with the classical S-MAC, HMAC is also energy-efficient, furthermore, the delay of data forwarding is reduced.

分析和实验结果表明，和经典的S-MAC相比，HMAC同样具有低能耗的优点，并且还降低了数据转发过程中的延时。

This paper describes the implementation of SHA-1 and MD5 in HMAC, and analyzes the superiority of the two algorithms.

叙述了HMAC中SHA-1及MD5算法的实现，重点分析了这2种算法各自的优越性。