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The U.S. National Institute of Standards and Technology is having a competition for a new cryptographic hash function. This matters. The phrase "one-way hash function" might sound arcane and geeky, but hash functions are the workhorses of modern cryptography. They provide web security in SSL. They help with key management in e-mail and voice encryption: PGP, Skype, all the others. They help make it harder to guess passwords. They're used in virtual private networks, help provide DNS security and ensure that your automatic software updates are legitimate. They provide all sorts of security functions in your operating system. Every time you do something with security on the internet, a hash function is involved somewhere. . The link for this article located at Wired.com is no longer available. . Uncover how cryptographic hash algorithms significantly contribute to the fortification of data security and the protection of online platforms in contemporary times.. Cryptographic Hash Functions, Web Security Applications, Encryption Standards. . LinuxSecurity.com Team
With the recent news of weaknesses in some common security algorithms (MD4, MD5, SHA-0), many are wondering exactly what these things are: They form the underpinning of much of our electronic infrastructure, and in this Guide we'll try to give an overview of what they are and how to understand them in the context of the recent developments. A "hash" (also called a "digest", and informally a "checksum") is a kind of "signature" for a stream of data that represents the contents. The closest real-life analog we can think is "a tamper-evident seal on a software package": if you open the box (change the file), it's detected. . The link for this article located at UnixWiz.net is no longer available. . The link for this article located at UnixWiz.net is no longer available.. recent, weaknesses, common, security, algorithms, sha-0). . LinuxSecurity.com Team
Federal agencies have been put on notice that National Institute of Standards and Technology officials plan to phase out a widely used cryptographic hash function known as SHA-1 in favor of larger and stronger hash functions such as SHA-256 and SHA-512. . The change will affect many federal cryptographic functions that incorporate hashes, particularly digital signatures, said William Burr, manager of NIST's security technology group, which advises federal agencies on electronic security standards. "There's really no emergency here," Burr said. "But you should be planning how you're going to transition — whether you're a vendor or a user — so that you can do better cryptography by the next decade." The link for this article located at FCW is no longer available. . The change will affect many federal cryptographic functions that incorporate hashes, particularly di. federal, agencies, notice, national, institute, standards, technology, officia. . LinuxSecurity.com Team
With the recent news of weaknesses in some common security algorithms (MD4, MD5, SHA-0), many are wondering exactly what these things are: They form the underpinning of much of our electronic infrastructure, and in this Guide we'll try to give an overview of what they are and how to understand them in the context of the recent developments. . . .. With the recent news of weaknesses in some common security algorithms (MD4, MD5, SHA-0), many are wondering exactly what these things are: They form the underpinning of much of our electronic infrastructure, and in this Guide we'll try to give an overview of what they are and how to understand them in the context of the recent developments. But note: though we're fairly strong on security issues, we are not crypto experts. We've done our best to assemble (digest?) the best available information into this Guide, but we welcome being pointed to the errors of our ways. * What is a cryptographic hash? A "hash" (also called a "digest", and informally a "checksum") is a kind of "signature" for a stream of data that represents the contents. The closest real-life analog we can think is "a temper-evident seal on a software package": if you open the box (change the file), it's detected. Let's first see some examples of hashes at work. Many Unix and Linux systems provide the md5sum program, which reads a stream of data and produces a fixed, 128-bit number that summarizes that stream using the popular "MD5" method. Here, the "streams of data" are "files" (two of which we see directly, plus one that's too large to display). The link for this article located at unixwiz.net is no longer available. . With the recent news of weaknesses in some common security algorithms (MD4, MD5, SHA-0), many are wo. recent, weaknesses, common, security, algorithms, sha-0). . LinuxSecurity.com Team
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