to encrypt a secret message
41IEEE 802.11i-2004 — IEEE 802.11i 2004, or 802.11i, is an amendment to the IEEE 802.11 standard specifying security mechanisms for wireless networks. The amendment has been incorporated into the published IEEE 802.11 2007 standard.802.11 is a set of IEEE standards… …
42Mental poker — is the common name for a set of cryptographic problems that concerns playing a fair game over distance without the need for a trusted third party. The term is also applied to the theories surrounding these problems and their possible solutions.… …
43Hybrid cryptosystem — In cryptography, public key cryptosystems are convenient in that they do not require the sender and receiver to share a common secret in order to communicate securely (among other useful properties). However, they often rely on complicated… …
44Cramer–Shoup cryptosystem — The Cramer–Shoup system is an asymmetric key encryption algorithm, and was the first efficient scheme proven to be secure against adaptive chosen ciphertext attack using standard cryptographic assumptions. Its security is based on the… …
45Quantum cryptography — Quantum cryptography, or quantum key distribution (QKD), uses quantum mechanics to guarantee secure communication. It enables two parties to produce a shared random bit string known only to them, which can be used as a key to encrypt and decrypt… …
46Traffic analysis — is the process of intercepting and examining messages in order to deduce information from patterns in communication. It can be performed even when the messages are encrypted and cannot be decrypted. In general, the greater the number of messages… …
47Derived unique key per transaction — In cryptography, Derived Unique Key Per Transaction (DUKPT) is a key management scheme in which for every transaction, a unique key is used which is derived from a fixed key. Therefore, if a derived key is compromised, future and past transaction …
48E-mail — Electronic mail, often abbreviated to e mail, email, or originally eMail, is a store and forward method of writing, sending, receiving and saving messages over electronic communication systems. The term e mail (as a noun or verb) applies to the… …
49Crypt (Unix) — In Unix computing, crypt is the name of both a commonly available utility program and a C programming function. Though both are used for encrypting data, they are otherwise essentially unrelated. To distinguish between the two, writers often… …
50iPhone — This article is about the line of smartphones by Apple. For other uses, see iPhone (disambiguation). The iPhone 4S, the most recent generation of the iPhone iPhone models …
