TAILIEUCHUNG - Hacker Professional Ebook part 194

Tham khảo tài liệu 'hacker professional ebook part 194', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | First it controls the export of cryptography from the . see Question the NSA generally does not approve export of products used for encryption unless the key size is strictly limited. It does however approve for export any products used for authentication only no matter how large the key size so long as the product cannot be converted to be used for encryption. The NSA has also blocked encryption methods from being published or patented citing a national security threat see Landau 46 for a discussion of this practice. Additionally the NSA serves an advisory role to NIST in the evaluation and selection of official . government computer security standards in this capacity it has played a prominent and controversial role in the selection of DES and in the development of the group of standards known as the Capstone project see Section 6 which includes DSS and the Clipper chip. The NSA can also exert market pressure on . companies to produce or refrain from producing cryptographic goods since the NSA itself is often a large customer of these companies. Cryptography is in the public eye as never before and has become the subject of national public debate. The status of cryptography and the NSA s role in it will probably change over the next few years. 8 Miscellaneous What is the legal status of documents signed with digital signatures If digital signatures are to replace handwritten signatures they must have the same legal status as handwritten signatures . documents signed with digital signatures must be legally binding. NIST has stated that its proposed Digital Signature Standard see Question should be capable of proving to a third party that data was actually signed by the generator of the signature. Furthermore . federal government purchase orders will be signed by any such standard this implies that the government will support the legal authority of digital signatures in the courts. Some preliminary legal research has also resulted in the

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