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Chapter 5 Security

Roberts Class

TermDefinition
AES Advanced Encryption Standard
Algorithm Procedures based on a mathematical formula used to encrypt and decrypt the data
Asymmetric Crytographic algorithm Cryptography that used two mathematically related keys
Block Cipher A cipher that manipulates an entire block of plain text at one time
Cipher Text Data that has been encrypted
Cleartext unencrypted data
Cryptography The science of transforming information into a secure form so that unauthorized persons cannot access it
DES Data Encryption Standard
Decryption The process of changing cipher text into plain text
Diffie Hellman A key exchange that requires all parties to agree upon a large prime number and related integar so that same key can be seperatly created
Diffie Hellman Ephemeral A diffie hellman exchange that uses different keys
Digest The unique digital fingerprint created by a one way hash algorithm
Digital signature An electronic verification of the sender
Elliptic Curve Cryptography An algorithm that uses elliptic curves instead of prime numbers to create keys
ECDH Elliptic Curve Diffie Hellman
Encyrption the process of changing plain text into cipher text
Ephemeral Key A temporary key that is used only once before it is discarded
GNU Privacy Guard Free and open source software that is commonly used to encrypt and decrypt data
Hardware Security Guard A secure cryptographic processor
Hash an algorithm that creates a unique digital fingerprint
Hashed Message Authentication Code A hash function that is applied to both the key and the message
In Band Exchanging secure information within normal communication channels
Key A mathematical value entered into a cryptographic algorithm to produce encrypted data
Key Exchange The process of sending and receiving secure cryptographic keys
Message Digest A common hash algorithm with several different versions
Message Digest 5 The version of MD
Non- Repudiation The process of proving that a user performed an action
One Time Pad Combining plain text with a random key to create ciphertext that cannot be broken mathematically
Out of Band Exchanging secure information outside the normal communication channels
Perfect Forward Secrecy Public key systems that generate random public keys that are different for each session
Plain Text Cleartext data that is to be encrypted and decrypted by a cryptographic
Pretty Good Privacy A commercial product that iss commonly used to encrypt files and messages
Private Key An asymetric encryption key that does have to be protected
Private Key Cryptography Cryptographic algorithm that use a single key to encrypt and decrypt a message
Public Key An asymmetric encryption key that does not have to be protected
Public Key Crytography Crytography that uses two mathmatically related keys
Quantum Cryptography A type of asymmetric cryptograpgt that attempts to use the unusual and unique behavior of microscopic onjects to enable uses to secretly develop and share keys
RIPEMD RACE Integrity Primitives Evaluation Message Digest
RC4 An RC stream cipher that will accept keys up to 128 bits in length
RSA The most common asymmetric Cryptography algorithm
Secure Hash Algorithm A secure hash algorithm that creates more secure hash values than message Digest algorithms
Sponge Function A cryptographic function that applies a process on the input that has been padded with additional characters until all characters are used
Steganography Hiding the exsistense of data wihtin another type of file
Stream Cipher An algorithm that takes one character and replaces it with one character
Symmetric Cryptographic Algorithm Encryption that used a single key to encrypt and decrypt a message
Triple Data Encryption Standard A symmetric cipher that was designed to replace des
Trusted Platform Module A chip on the motherboard of the computer that provides cryptographic services
Twofish A derivation of the blowfish algorithm that is considered strong
Whole Disk Encryption Cryptography that can be applied to entire disks
Created by: 1019660571411816