TAILIEUCHUNG - Hacker Professional Ebook part 193

Tham khảo tài liệu 'hacker professional ebook part 193', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | key escrow agencies the keys on the Clipper chips are not generated in a sufficiently secure fashion there will not be sufficient competition among implementers resulting in expensive and slow chips software implementations are not possible and the key size is fixed and cannot be increased if necessary. Micali 55 has recently proposed an alternative system that also attempts to balance the privacy concerns of law-abiding citizens with the investigative concerns of law-enforcement agencies. Called fair public-key cryptography it is similar in function and purpose to the Clipper chip proposal but users can choose their own keys which they register with the escrow agencies. Also the system does not require secure hardware and can be implemented completely in software. What is the current status of Clipper Clipper is under review. Both the executive branch and Congress are considering it and an advisory panel recently recommended a full year-long public discussion of cryptography policy. NIST has invited the public to send comments as part of its own review. What is DSS DSS is the proposed Digital Signature Standard which specifies a Digital Signature Algorithm DSA and is a part of the . government s Capstone project see Question . It was selected by NIST in cooperation with the NSA see Section 7 to be the digital authentication standard of the . government whether the government should in fact adopt it as the official standard is still under debate. DSS is based on the discrete log problem see Question and derives from cryptosystems proposed by Schnorr 75 and ElGamal 30 . It is for authentication only. For a detailed description of DSS see 63 or 57 . DSS has for the most part been looked upon unfavorably by the computer industry much of which had hoped the government would choose the RSA algorithm as the official standard RSA is the most widely used authentication algorithm. Several articles in the press such as 54 discuss the industry .

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