Term
| DES: Type and # of bits in key |
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Definition
| Symmetric algorithm / Block / 56 bit key |
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Term
| 3DES: Type and # of bits in key |
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Definition
| Symmetric algorithm / Block / 168 bit key |
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Term
| AES: Type and # of bits in key |
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Definition
| Symmetric algorithm / Block 128, 192 or 256 bit keys |
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Term
| IDEA: Type and # of bits in key |
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Definition
| Symmetric algorithm / Block / 128 bit key |
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Term
| Twofish: Type and # of bits in key |
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Definition
| Symmetric algorithm / Block / 256 bit key |
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Term
| Symmetric Encryption AKA (2) |
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Definition
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Term
| Symmetric Encryption drawbacks (2) |
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Definition
| Key sharing is complicated / scalability issue (too many keys needed) |
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Term
| Symmetric Encryption advantages (2) |
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Definition
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Term
| Typical block size of symmetric key encryption |
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Definition
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Term
| Block ciphers use these two methods to encrypt |
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Definition
| Substitution / Transposition |
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Term
| Name four Asymmetric Encryption types |
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Definition
| Diffie-Hellman, Elliptic Curve Cryptosystem (ECC), El Gamal, RSA |
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Term
| MD5 stands for / hash size / relevance |
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Definition
| Message Digest algorithm / 128 bit / declared vulnerable in 2010 |
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Term
| SHA-1: hash size / relevance |
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Definition
| 160 bits / determined vulnerable in 2005 but still widely used |
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Term
| SHA-2: hash size / relevance |
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Definition
| 4 hash sizes depending on algorithm: 224, 256, 384, 512 bits / not widely used but replacement for SHA-1 |
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Term
| Hashing algorithm is vulnerable to what? Describe / frequency of success / prime example of use |
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Definition
| Collision attack: When 2 or more files create the same output / extremely rare / find another word (password) with the hash and use the other word to get into the system. |
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Term
| What is used to assist in a collision attack on a hash? |
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Definition
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Term
| Hashes are primarily used for what? How? |
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Definition
| Integrity checking. If recalculation on the file shows a different hash than the original, the file cannot be trusted. |
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Term
| Name the encryption method which hides messages in plain sight? |
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Definition
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Term
| What is current PKI world standard version number? |
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Definition
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Term
| From what can the public key be retrieved? |
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Definition
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Term
| Name the four primary cryptography attacks |
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Definition
| Known plaintext, Ciphertext-only, Replay attack, Chosen cipher |
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Term
| Name four avenues of encrypted communications |
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Definition
| Secure shell (SSH), Secure Socket Layer (SSL), Internet Protocol Security (IPSec), Point-to-point tunneling Protocol (PPTP) |
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Term
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Definition
| Point-to-point tunneling Protocol |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| Internet Protocol Security |
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Term
| Do these two things to ensure your encryption is effectively uncrackable |
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Definition
| Use a large key / change the key on a regular basis |
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Term
| Encryption algorithms turn what into what |
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Definition
| Plaintext into ciphertext |
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Term
| This term is is applicable when both parties cannot deny the message was sent /received |
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Definition
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Term
| In asymmetric encryption, what type of key is used for encryption? |
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Definition
| Public key (used for what in asymmetric encryption) |
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Term
| In asymmetric encryption, what type of key is used for decryption? |
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Definition
| Private key (used for what in asymmetric encryption) |
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Term
| Asymmetric algorithms solve what three problems? |
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Definition
| Scalability, key exchange issue, lack of non-repudiation in symmetric algorithms |
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Term
| This can be used to protect against collision attacks and rainbow tables / define |
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Definition
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Term
| This term is used for the practice of trying every possible combination to break a code |
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Definition
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Term
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Definition
| If the key is smaller than the data, the cipher will be vulnerable to frequency attacks. |
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