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34 Cards in this Set
- Front
- Back
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DES
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Data Encryption Standard
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AES
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Advanced Encryption Standard
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Advanced Encryption Standard
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Replacement for DES. Utilizes 128, 192, and 256-bit encryption.
128-bit is the default. |
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Data Encryption Standard
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A 56-bit encryption standard used from 1970 until its replacement by AES.
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AES256
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Advanced Encryption Standard running 256-bit encryption rather than the default 128-bit.
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CAST
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Fast data encryption using 40 to 128-bit encryption
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RC
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Rivet's Cipher
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Rivet's Cipher
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Strong encryption using up to 2048-bit encryption.
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Blowfish / Twofish
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64-bit encryption / 128-bit encryption
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IDEA
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Similar to DES but more secure. Uses 128-bit encryption. Utilized in PGP (Pretty Good Privacy).
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Symmetric Encryption
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Requires both users to hold the same key.
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Asymmetric Encryption
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Requires both a public and private key. Public key encrypts and private key decrypts.
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Block Cipher
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Encrypts chunks of data at once.
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Stream Cipher
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Encrypts individual bits/bytes of data.
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PKC
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Public Key Cryptography
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4 main systems of Asymmetric Algorithms.
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RSA, Diffie-Helman, ECC, El Gamal
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RSA
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Is used in SSL. Uses large integers as a foundation.
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Diffie-Helman
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Used to transmit keys security. This method breaks keys into multiple parts.
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ECC
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Elliptic Curve Cryptography.
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Elliptic Curve Key
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Used in cell phones and wireless hardware. This algorithm uses points on a curve to determine the necessary public/private combination.
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El Gamal
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Algorithm similar to D-H. DSA is based on El Gamal. Digital Signature Algorithm.
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AES(128), AES(256), CAST, RC, Blowfish, Twofish, IDEA are examples of:
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Symmetric Encryption
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PKI
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Public Key Infrastructure
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Four (4) Key Components of PKI
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Certificate Authority (CA), Registration Authority (RA), RSA, and Digital Certificats.
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First step of sending an encrypted message. (PKI)
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Obtain the user's public key.
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CA
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Certificate Authority
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Certificate Authority
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Organization responsible for issuing, revoking, and distributing certificates.
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RA
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Registration Authority
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Registration Authority
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A middle-man for the CA allowing for registration, key issuance, and validation. Does NOT issue certificates.
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LRA
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Local Registration Authority
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Local Registration Authority
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Similar to a registration authority but also verifies identity.
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X.509
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Most widely used certificate format.
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What is the purpose of a certificate?
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Binds the user's public key to their identity.
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Certificate Policies
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A CA can issue many different types of certificates an the CP determines how they are used.
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