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| Public encrypts; private decrypts in what encryption type? |
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| Function which creates a signature of a file. Helps in proving integrity. |
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| Study of protecting information, whether in transit or at rest. |
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| In cryptography, the term for encrypted data |
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| Rendering sender unable to deny they sent something. |
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| Cipher method in which bits are encyrpted one bit at a time. |
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| Encrypted in sets of data, usually 64 bits at a time |
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| Substitution and transposition are algorithms used in which encryption method. |
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| Primary algorithm used in stream cipher. |
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| Speed is a benefit of which encryption method. |
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| If the key is smaller than the data, successful cryptanalysis is possible via frequency attack |
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| De Facto encryption standard |
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| multiplies two prime numbers. |
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| Used for encryption and digital signatures |
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| Repository for government encryption access when there are legal issues, such as subpoenas |
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| Asymmetric encryption disadvantage |
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| Requires large encryption keys. |
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| Symmetric Encryption AKA (4) |
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| Single / secret / shared / private |
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| Symmetric Encryption drawbacks (2) |
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| Key sharing is complicated / Scalability |
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| Typical data block size of symmetric key encryption |
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| Encryption method which replaces character with another character, or bit with another bit. |
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| Diffie-Hellman encryption type |
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| Diffie-Hellman used in which two protocols |
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| Encryption used in IPSEC and SSL protocols |
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| Diffie-Hellman vulnerable to... |
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| Vulnerable to man-in-the-middle attacks (MITM) when digital signature use is waived |
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| Elliptic Curve Cryptosystem |
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| Elliptic Curve Cryptosystem (ECC)used on what devices? |
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| Encryption method used by mobile devices |
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| Elliptic Curve Cryptosystem (ECC) benefit |
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Definition
| Uses less computational power |
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| El Gamal (difference from RSA) |
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| Encryption method not based on prime number factoring |
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| Uses discrete logarithm problems for encryption and digital signatures |
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| First government accepted digital signature scheme |
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| First government accepted digital signature scheme; it meets Digital Signature Standard (DSS), one of the Federal Information Processing Standards (FIPS) |
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| Hash function(definition) |
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| Any algorithm that maps data of variable length to data of a fixed length |
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| Results of hashing function (5 synonyms) |
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| hashes, hash values, hash codes, hash sums, checksums |
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| Used to crack a hash algorithm |
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| Collision (hash, definition) |
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| When 2 or more files create the same output from a hash function |
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| Public Key Infrastructure |
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| Web of Trust / Single authority System / Hierarchical Trust System |
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| User trust certificates they have exchanged with another person, and further they trust everyone who the other person trusts and so on |
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| There is one entity which holds all certificates-the Certificate Authority |
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| Hierarchical Trust System |
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| There is a certificate authority at the top and then all the entities below it which are trusted by the certificate authority to do their job on their behalf |
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| Fields in a digital certificate (8) |
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| Public key, Serial Number, Subject/Algorithm, Issuer, Valid From date, Valid To date, Key Usage (purpose of use), optional fields |
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| Current PKI world standard version number |
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| key size is deemed by the US government as uncrackable |
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| Avenues of encrypted communications |
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Definition
| (SSIP) Secure shell (SSH) / Secure Socket Layer (SSL) / Internet Protocol Security (IPSec) / Point-to-point tunneling Protocol (PPTP) |
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| 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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| Encryption algorithms turn what into what? |
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| Plaintext into ciphertext |
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| When both parties cannot deny the message was sent /received |
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| Encryption method which cannot be broken if the message is truly random, used only once and has no repeating patterns |
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| Name three problems which symmetric encryption algorithms have that asymmetric encryption algorithms do not |
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| Scalability issue / key exchange issue / lack of non-repudiation |
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