Term
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Definition
- AES
- DES
- 3DES
- RC4
- Blowfish/Twofish |
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Term
| Key stretching algorithms |
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Definition
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Term
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Definition
- CBC
- GCM
- ECB
- CTR
- Stream vs. block |
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Term
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Definition
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Term
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Definition
- RSA
- DSA
- Diffie-Hellman
- Groups
- DHE
- ECDHE
- Elliptic curve
- PGP/GPG |
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Term
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Definition
- XOR
- ROT13
- Substitution ciphers |
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Term
| Hash-based Message Authentication Code - HMAC |
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Definition
- very fast form of hashing
- Combines hash with secret key
- Integrity and authenticity without using PKI
- Used with IPSec and TLS |
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Term
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Definition
-A method of making something difficult to understand
-combines binary data with a key to produce cipher text |
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Term
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Definition
-Caesar cipher type
-substitutes one letter with another letter |
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Term
| Galois Counter Mode - GCM |
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Definition
-Counter Mode with additional mathematical functions
-both encryption and authentication at the same time
-Efficient
-used for network communication
-IPSec TUnnels
-Used with SSH and TLS |
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Term
| Message Digest Algorithm - MD5 |
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Definition
-Designed by Ronald Rivest
-1992
-1996 many collisions
-2008 created forged cert from Rapid-SSL
-2008, researchers able to build a certificate that appeared to be from a certificate authority |
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Term
| Electronic Code Book - ECB |
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Definition
-Encrypts blocks of text doing XOR with the same key
-Identical text produces identical cipher text |
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Term
| Cipher Block Chaining - CBC |
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Definition
-Encrypts first group of data with an IV
-Encrypts subsequence blocks by performing XOR with previous group of encrypted data |
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Term
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Definition
-Implementation of PGP
-Windows, MAC, Linux |
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Term
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Definition
-Makes CBC block cipher into a stream cipher
-Transmission errors do not propagate |
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Term
| DSA - digital signature algorithm |
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Definition
-Modification of Diffie-Hellman key exchange
-Used for guaranteeing source |
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Term
| Secure Hash Algorithm 1 - SHA1 |
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Definition
-National Security Agency
-part of the Federal Information Processing Standard
-160-bit digest
-2005 there were collisions found |
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Term
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Definition
-Obfuscation
-Substitutes one letter with another at a fixed position |
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Term
| Password Based Key Derivation Function 2 PBKDF2 |
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Definition
-Part of RSA cryptography
-PKCS #5, RFC 2898
-Key Stretch |
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Term
| pretty good privacy (PGP) |
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Definition
-RFC 4880
-Asymmetric encryption
-1991 Phil Zimmerman |
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Term
| Legitimate Versions of RIPEMED |
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Definition
-RIPEMED-128
-RIPEMED-160
-RIPEMED-256
-RIPEMED-320 |
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Term
| Ephemeral Diffie-Hellman - DHE |
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Definition
-Used for keys used to generate session keys
-Uses different key for each session |
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Term
| Ciphertext FeedBack - CFB |
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Definition
-Used to use CBC as a stream cipher
-CBC is fixed length
-Applies to smaller values
-Previous ciphertext used to encrypt
-Allow errors to propagate |
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Term
| Elliptical Curve Diffie-Hellman - ECDHE |
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Definition
-Uses points on an elliptical curve to generate randomness
-Very efficient and fast
-Allows smaller key sizes |
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Term
|
Definition
-Variable length real time data
-Fixed length groups of data |
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Term
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Definition
| -allows two devices to decide on a common symmetric key that can then be used for symmetric encryption |
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Term
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Definition
-digests up to 512 bit
-NSA |
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Term
| RSA - Rivest, Shamir, and Adelman |
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Definition
-encrypt information
-decrypt information
-digital signatures
-Uses very large prime numbers to encrypt |
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Term
| Federal Information Processing Standard (FIPS ) |
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Definition
-for Digital Signatures
-government standard |
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Term
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Definition
-generates hashes from passwords
-Uses Blowfish
-Extension to UNIX crypt library
-Key Stretching |
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Term
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Definition
-like stream cipher
-uses a fixed sized counter
-starts at any value
-xor key with counter and xor result with plaintext block |
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Term
| Race Integrity Primitives Evaluation Message Digest - RIPEMD |
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Definition
-the research and development in advanced communication and technologies in Europe
-Collisions were found with RIPEMD in 2004 |
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Term
| Race Integrity Primitives Evaluation Message Digest - RIPEMD-160 |
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Definition
| A message digest algorithm and cryptographic hash function. An improved version of a previous 40 bit algorithm. |
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Term
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Definition
| A curve that is defined by a mathematical equation that has no cusps or self-intersections. |
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Term
| EAP protocol that does not require the use of client or server certificates |
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Definition
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Term
| AES - Advanced Encryption Standard |
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Definition
- supersedes the Data Encryption Standard (DES),[7] which was published in 1977.
- a symmetric-key algorithm, meaning the same key is used for both encrypting and decrypting the data.
- 128, 192, and 256 bit variants selected by NIST
- Rijndael block cipher |
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Term
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Definition
| The form of encryption where only a single key can encrypt and decrypt information |
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Term
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Definition
-Private Key
-Max key size 256 bit
-Symmetric |
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Term
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Definition
Chaotic Tent Mapping
Encryption of Digital Images |
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Term
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Definition
| Format that would be used for a certificate file used to sign powershell scripts |
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Term
| SSL (Secure Sockets Layer) |
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Definition
| An earlier version of TLS that was used with protocols such as HTTPS and FTPS. TLS replaced it. |
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Term
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Definition
| A protocol used for real time data that uses AES for confidentiality |
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Term
|
Definition
The following are symmetric ciphers used for encryption
- AES
- DES
- 3DES
- RC4
- Blowfish/Twofish |
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