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“It's not good enough to have a system where everyone (using the system) must be trusted, it must also be made robust against insiders!”
Robert Morris, former Chief Scientist of the US National Security Agency (NSA), National Computer Security Center, "Crypto '95 invited talks by R. Morris and A. Shamir", 1995
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"Unfortunately, the security issues of a technology near the end of its lifetime are typically overlooked. The best known example is that of cryptographic keys and algorithms which may need to offer in some cases security for 50 to 100 years."
SecurIST, “D3.3 – ICT Security & Dependability Research beyond 2010: Final Strategy”, January 2007 -
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"The security of the digital world has become a fundamental stake for the citizen with respect to his individual freedom ..., for the company with respect to the protection of its computerized industrial assets, ..., and for the state with respect to the reliability of operations and the reduction in the vulnerability of large and critical infrastructures ...”
SecurIST, “D3.3 – ICT Security & Dependability Research beyond 2010: Final Strategy”, January 2007
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Facts and frequently asked questions about symmetric cryptography. Block ciphers, stream ciphers and hash functions are symmetric operations. A symmetric keyed operation is where the sender and receiver share a common key to perform encoding and decoding of a message. Examples include DES and AES. A symmetric unkeyed operation is where the sender and receiver call the same cryptographic operation on a message. For example the SHA hash function. |
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