Flashcards
Cryptopgraphy
Cards in this deck (32)
- 1Certificate-signing Request (CSR)1) First step in getting a certificate
2) Renewal
3) contains information identifying the applicant - 2Cipher1) method used to encode characters to hide their value
- 3Ciphering1) The process of using a cipher to encode a message
2) an algorithm for performing encryption or decryption - 4Cryptographic Hashing (Medical Services Help Recovery)1) a number generated from a string or text
2) used to validate data integrity by ensuring a message hasn't been tampered with - 5MD Message Digest - (MD)1) One way hash
2) MD5 (128 bit, MD4 (NTLM)) and MD2
3) Weak collision resistance - 6Secure Hash Algorithm - (SHA)1) Ensure the integrity of a message
2) One way hash
3) Can be used with encryption protocols
4) Hash value sizes 160, 256. 512 - 7Hash Message Authentication Code (HMAC)1) Uses hash + Symmetric Key
- 8RACE Integrity Primitives Evaluation Message Digest (RIPEMD)1) Based on MD4
2) RIPEMD replaced by RIPEMD - 160 - 9Collision1) Hash algorithm takes two data sets but create the same digest/hash
- 10Data Encryption Standard - (DES)1) Symmetric, block ciper
2) 3DES (Repeats encryption + multiple keys - 11Advanced Encryption Standard - (AES)1) Established by the U.S. National Institute of Standards and Technology (NIST)
2) Size 128, 192 and 256 - 12RSA1) Asymmetric
2) RSA digital signatures
3) Key Pairs (public & private)
4) used to encrypt and decrypt messages. - 13Public Key Infrastructure (PKI)1) Framework that provides security to messages and transactions
2) Asymmetric system (two keys)
4) Certificate authority CA, Registration Authority RA, RSA and Digital Signatures
5) Encrypted with public and decrypted with private - 14Certificate Authority (CA)1) issuing, revoking, and distributing certificates.
3) mechanism that associates the public key with an individual - 15Registration Authority - RA1) distribute keys, accept registrations for the CA, and validate identities.
2) doesn’t issue certificates - 16Certificate Revocation List (CRL)1) Process of revoking a certificate
- 17Out-of-band key exchange1) don't send symmetric key over the network
2) sending key via phone, courier or in-person - 18In-band key exchange1) Keys are sent over the network
2) Keys are protected with addition encryption
3) Often used asymmetric encryption to deliver symmetric keys - 19Elliptic curve cryptography - (ECC)1) Uses curves instead of numbers
2) small storage and transmission
3) Used with mobile device - 20Quantum Cryptography1) Use quantum to provide cryptographic
2) Uses Quantum key distribution (QKD)
3) shared key between two users
4) prevents man-in-the-middle attacks - 21Key Escrow1) Third party hold private decryption keys
2) Government agency may need to decrypt partner data
3) Used when you need data on a formal employee laptop - 22Key Recovery1) Decrypts message of user who have lost their private key
2) Recovers the private key
3) maintain access to encrypted resources - 23Digital Certificate1) Binds a public key with a digital signature
- 24One-time pads1) Key is as long as the plaintext message
2) used only once the discarded - 25Diffie-Hellman1) public/private key concept
2) key exchange - 26X.5091) standard defines the certificate formats and fields for public keys.
2) defines the procedures that should be used to distribute public keys - 27Ephemeral Diffie-Hellman - ECDHE1) secure key negotiation
- 28Twofish1) 128 bit block symmetric cipher
- 29Blowfish1) 64 bit block symmetric cipher
2) very fast speeds - 30Hardware Security Module (HSM)1) Cyptoprocessor used to enhance security
2) Used with PKI systems
3) PCI adapter - 31Trusted Platform Modules (TPM)1) Used with hash key generation
2) Chip that stores crytopgraphic keys, passwords or certificates
3) Smart phones - 32Online Certificate Status Protocol (OCSP)1) Real-time protocol that has replaced CRLs
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- Flashcards on Cryptopgraphy , created by Obi Davis on 09/02/2015.
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- Obi Davis
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