CREST CPSA - Cryptography & Ciphers Exam with || || || || || || || ||
accurate detailed answers || ||
Symmetric Encryption - ✔✔An encryption method whereby the same key is used to encrypt
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and to decrypt the message.
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Asymmetric Encryption - ✔✔Uses two different keys to encrypt and decrypt messages, a
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public key and a private key.
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PKI (Public Key Infrastructure) - ✔✔An encryption system that is composed of a CA,
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certificates, software, services, and other cryptographic components, for the purpose of
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verifying authenticity and enabling validation of data and entities.
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PKI can be used to verify authenticity, authenticate users, and validate messages.
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RSA - ✔✔Rivest, Shamir and Adelamn Cipher, public-key cryptosystem, one of the oldest,
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that is widely used for secure data transmission.
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Key Size: 2049 - 4096 bits
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Diffie-Hellman - ✔✔An algorithm that can be used to establish a shared secret between two || || || || || || || || || || || || || ||
parties wishing to communicate.
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DES Algorithm - ✔✔The Data Encryption Standard algorithm. A publicly available
|| || || || || || || || || || ||
mathematical calculation that is used in conjunction with confidential security keys to
|| || || || || || || || || || || ||
perform the processes of authentication and encryption.
|| || || || || ||
accurate detailed answers || ||
Symmetric Encryption - ✔✔An encryption method whereby the same key is used to encrypt
|| || || || || || || || || || || || ||
and to decrypt the message.
|| || || || ||
Asymmetric Encryption - ✔✔Uses two different keys to encrypt and decrypt messages, a
|| || || || || || || || || || || || ||
public key and a private key.
|| || || || ||
PKI (Public Key Infrastructure) - ✔✔An encryption system that is composed of a CA,
|| || || || || || || || || || || || || ||
certificates, software, services, and other cryptographic components, for the purpose of
|| || || || || || || || || || ||
verifying authenticity and enabling validation of data and entities.
|| || || || || || || ||
PKI can be used to verify authenticity, authenticate users, and validate messages.
|| || || || || || || || || || ||
RSA - ✔✔Rivest, Shamir and Adelamn Cipher, public-key cryptosystem, one of the oldest,
|| || || || || || || || || || || || ||
that is widely used for secure data transmission.
|| || || || || || ||
Key Size: 2049 - 4096 bits
|| || || || ||
Diffie-Hellman - ✔✔An algorithm that can be used to establish a shared secret between two || || || || || || || || || || || || || ||
parties wishing to communicate.
|| || || ||
DES Algorithm - ✔✔The Data Encryption Standard algorithm. A publicly available
|| || || || || || || || || || ||
mathematical calculation that is used in conjunction with confidential security keys to
|| || || || || || || || || || || ||
perform the processes of authentication and encryption.
|| || || || || ||
