Best of email security 2013

Email Security Guidelines, Encryption and Appliances

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  • Advanced Encryption Standard (AES)

    The Advanced Encryption Standard (AES) is an encryption algorithm for securing sensitive but unclassified material by U.S. Government agencies and, as a likely consequence, may eventually become the de facto encryption standard for commercial transac... 

  • Twofish

    Twofish is an encryption algorithm based on an earlier algorithm, Blowfish, and was a finalist for a NIST Advanced Encryption Standard (AES) algorithm to replace the DES algorithm. 

  • Defense Message System (DMS)

    The Defense Message System (DMS) is a secure X.400-based e-mail system developed by the United States government in conjunction with industry partners to ensure safety for critical operations. 

  • data encryption/decryption IC

    A data encryption/decryption IC is a specialized integrated circuit (IC) that can encrypt outgoing data and decrypt incoming data... 

  • asymmetric cryptography (public-key cryptography)

    Asymmetric cryptography is cryptography in which a pair of keys is used to encrypt and decrypt a message so that it arrives securely. Initially, a network user requests a public and private key pair. A user who wants to send an encrypted message can... 

  • passphrase

    A passphrase is a string of characters longer than the usual password (which is typically from four to 16 characters long) that is used in creating a digital signature (an encoded signature that proves to someone that it was really you who sent a mes... 

  • ciphertext

    Ciphertext is encrypted text. 

  • challenge-response system

    A challenge-response system is a program that replies to an e-mail message from an unknown sender by subjecting the sender to a test (called a CAPTCHA) designed to differentiate humans from automated senders. 

  • cut-and-paste attack

    A cut-and-paste attack is an assault on the integrity of a security system in which the attacker substitutes a section of ciphertext (encrypted text) with a different section that looks like (but is not the same as) the one removed. 

  • cipher block chaining (CBC)

    Cipher block chaining (CBC) is a mode of operation for a block cipher (one in which a sequence of bits are encrypted as a single unit or block with a cipher key applied to the entire block). 

  • See more Definitions on Email Security Guidelines, Encryption and Appliances
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