Term
Advanced Encryption Standard (AES) 

Definition
A symmetric cipher that has been approved as a replacement for DES. 


Term

Definition
Procedures based on a mathematical formula; used to encrypt the data. 


Term
Asymmetric Cryptographic Algorithm 

Definition
Encryption that uses two mathematically related keys. 


Term

Definition
A Microsoft Windows Vista hardwareenabled data encryption feature. 


Term

Definition
A cipher that manipulates an entire block of plaintext at one time. 


Term

Definition
A block cipher that operates on 64bit blocks and can have a key length from 32 to 448 bits. 


Term

Definition
Data that has been encrypted. 


Term

Definition


Term

Definition
In cryptography, two different sets of data that produce the same bash. 


Term

Definition
The science of transforming information into an unintelligible form while it is being transmitted or stored so that unauthorized users cannot access it. 


Term
Data Encryption Standard (DES) 

Definition
A symmetric block cipher that encrypts data in 64bit blocks. 


Term

Definition
The process of changing ciphertext into plaintext. 


Term

Definition
A cryptographic algorithm that allows two users to share a secret key securely over a public network. 


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Definition
The unique signature created by a hashing algorithm. 


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Definition
An electronic verification of the sender. 


Term
Elliptic Curve Cryptography 

Definition
An algorithm that uses elliptic curves instead of prime numbers to compute keys. 


Term
Encrypting File System (EFS) 

Definition
An encryption scheme for Windows operating systems. 


Term

Definition
The process of changing plaintext into ciphertext. 


Term

Definition
A method used by operating systems to store, retrieve, and organize files. 


Term

Definition
Free, opensource software that is commonly used to encrypt and decrypt email messages. 


Term

Definition
The unique signature created by a hashing algorithm. 


Term

Definition
The process for creating a unique signature for a set of data. 


Term
Homoalphabetic Substitution Cipher 

Definition
A cipher that maps a single plainrext character to multiple ciphertext characters. 


Term
International Data Encryption Algorithm (IDEA) 

Definition
A symmetric algorithm that dates back to the early 1990s and is used mainly in Europe. 


Term

Definition
A mathematical value entered into the algorithm to produce the ciphertext. 


Term

Definition
A common hash algorithm of several different versions. 


Term

Definition
A hash algorithm that takes plaintext of any length and cretes a hash that is 128 bits in length after the message is divided into 128 bit sections. 


Term

Definition
A hash that was developed in 1990 for computers that processed 32 bits at a time. 


Term

Definition
A revision of MD4 that is designed to address its weaknesss. 


Term

Definition
Data that is used to describe the content or stucture of the actual data. 


Term
Monoalphabetic substitution cipher 

Definition
A cipher that simply substitutes one letter or character for another. 


Term

Definition
The process of proving that a user performed an action. 


Term

Definition
Combining a truly random key with plainrext. 


Term

Definition
The process for creating a unique signature for a set of data. 


Term

Definition
In cryptography a truly random key. 


Term

Definition
Additional data that is added to a bash to make it the correct number of bytes. 


Term

Definition
Data input into an encryption algorithm. 


Term
Pretty Good Privacy (PGP) 

Definition
A commercial product that is commonly used to encrypt email messages. 


Term

Definition
An asymmetric encryption key that does have to be protected. 


Term

Definition
Cryptographic algorithms that use a single key to encrypt and decrypt a message. 


Term

Definition
An asymmetric encryption key that does not have to be protected. 


Term

Definition
Encryption that uses two mathematically related keys. 


Term

Definition
A block cipher chat processes blocks of 64 bits. 


Term

Definition
A stream cipher that will accept keys up to 128 bits in length. 


Term

Definition
A block cipher that can accept different length keys and blocks. 


Term

Definition
A cipher that has three key sizes (128 192, and 256 bit) end performs 20 rounds on each block. 


Term

Definition
A family of cipher algorithms designed by Ron Rivest. 


Term

Definition
An asymmetric algorithm published in 1977 and patented by MIT in 1983. 


Term
Secure Hash Algorithm (SHA) 

Definition
A secure hash algorithm that creates hash values of longer lengths. 


Term

Definition
The first versions of Secure Hash Algorithm. 


Term

Definition
A family os Secure Hash Algorithms that his four variations, known at SHA224, SHA256, SHA384, and SHA512. 


Term

Definition
Hiding the existence of data within a text, audio, image, or video file. 


Term

Definition
An algorithm that takes one character and replaces it with one character. 


Term

Definition
A cipher that simply substitutes one letter or character for another. 


Term

Definition
A Cipher that rearranges letters without changing them. 


Term
Triple Data Encryption Standard (3DES) 

Definition
A symmetric cipher that was designed to replace DES. 


Term
Trusted Platform Module (TPM) 

Definition
A chip an the motherboard of the computer that provides cryptographic services. 


Term

Definition
A later derivation of the Blowfish algorithln that is considered to be strong. 


Term

Definition
A new cryptographic hash function that has received international recognition and adoption by standards organizations. 


Term

Definition
Cryptography that can be applied to entire disks. 

