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• AACS encryption key controversy — A controversy surrounding the AACS cryptographic key arose in April 2007 when the Motion Picture Association of America and the Advanced Access Content System Licensing Administrator, LLC (AACS LA) began issuing demand letters[1] to websites… …   Wikipedia

• NSA encryption systems — The National Security Agency took over responsibility for all U.S. Government encryption systems when it was formed in 1952. The technical details of most NSA approved systems are still classified, but much more about its early systems has become …   Wikipedia

• Key size — In cryptography, key size or key length is the size measured in bits[1] of the key used in a cryptographic algorithm (such as a cipher). An algorithm s key length is distinct from its cryptographic security, which is a logarithmic measure of the… …   Wikipedia

• Comparison of disk encryption software — This is a technical feature comparison of different disk encryption software. Contents 1 Background information 2 Operating systems 3 Features 4 Layering …   Wikipedia

• Proxy re-encryption — schemes are cryptosystems which allow third parties (proxies) to alter a ciphertext which has been encrypted for one party, so that it may be decrypted by another. Examples of UseBob could designate a proxy to re encrypt one of his messages that… …   Wikipedia

• Public-key cryptography — In an asymmetric key encryption scheme, anyone can encrypt messages using the public key, but only the holder of the paired private key can decrypt. Security depends on the secrecy of that private key …   Wikipedia

• Diffie–Hellman key exchange — (D–H)[nb 1] is a specific method of exchanging keys. It is one of the earliest practical examples of key exchange implemented within the field of cryptography. The Diffie–Hellman key exchange method allows two parties that have no prior knowledge …   Wikipedia

• Symmetric-key algorithm — Symmetric key algorithms are a class of algorithms for cryptography that use trivially related, often identical, cryptographic keys for both decryption and encryption.The encryption key is trivially related to the decryption key, in that they may …   Wikipedia

• End-to-end encryption — Description End to end encryption (E2EE) encrypts clear (red) data at source with knowledge of the intended recipient, allowing the encrypted (black) data to travel safely through vulnerable channels (eg. public networks) to its recipient where… …   Wikipedia

• Homomorphic encryption — is a form of encryption where one can perform a specific algebraic operation on the plaintext by performing a (possibly different) algebraic operation on the ciphertext. Depending on one s viewpoint, this can be seen as a positive or negative… …   Wikipedia

• Temporal Key Integrity Protocol — or TKIP is a security protocol used in the IEEE 802.11 wireless networks. Background TKIP (pronounced tee kip ) was designed by the IEEE 802.11i task group and the Wi Fi Alliance as a solution to replace WEP without requiring the replacement of… …   Wikipedia