Certified Encryption Specialist – Questions With
Verifiable Answers
What type of encryption uses different keys to encrypt and decrypt the
message?
+Secure
+Asymmetric
+Private key
+Symmetric Correct Answer - Asymmetric
Asymmetric cryptography, also known as public key cryptography, uses
public and private keys to encrypt and decrypt data.
The most widely used asymmetric encryption algorithm is what?
+Caesar Cipher
+Vigenere
+RSA
+DES Correct Answer - RSA
The RSA encryption algorithm is one of the most widely used public key
encryption algorithms that have ever been invented. It was created by the
three scientists Ronald Rivest, Adi Shamir, and Leonard Adleman in 1977, and
today it is increasingly being used in the network area.
Original, unencrypted information is referred to as ____.
+text
+plaintext
+cleantext
+ciphertext Correct Answer - Plaintext
Plaintext is a term used in cryptography that refers to a message before
encryption or after decryption. That is, it is a message in a form that is easily
readable by humans. Encryption is the process of obscuring messages to make
them unreadable in the absence special knowledge
, Which of the following is not an asymmetric system?
+SSL
+DES
+PGP
+RSA Correct Answer - DES
The Data Encryption Standard is a symmetric-key algorithm for the
encryption of electronic data. Although now considered insecure, it was highly
influential in the advancement of modern cryptography.
In order for User A to send User B an encrypted message that only User B can
read, User A must encrypt message with which of the following keys?
+User B's public key
+User B's private key
+User A's public key
+User A's private key Correct Answer - USER B's Public Key
Public key cryptography, or asymmetrical cryptography, is any cryptographic
system that uses pairs of keys: public keys which may be disseminated widely,
and private keys which are known only to the owner
The greatest weakness with symmetric algorithms is _____.
+The problem of key exchange
+The problem of generating keys
+They are slower than asymmetric
+They are less secure than asymmetric Correct Answer - The Problem of
Key exchange
The biggest problem with symmetric key encryption is that you need to have a
way to get the key to the party with whom you are sharing data.
Which of the following is generally true about block sizes?
+Block size is irrelevant to security
+Block sizes must be more than 256 bits to be secure
+Larger block sizes increase security
Verifiable Answers
What type of encryption uses different keys to encrypt and decrypt the
message?
+Secure
+Asymmetric
+Private key
+Symmetric Correct Answer - Asymmetric
Asymmetric cryptography, also known as public key cryptography, uses
public and private keys to encrypt and decrypt data.
The most widely used asymmetric encryption algorithm is what?
+Caesar Cipher
+Vigenere
+RSA
+DES Correct Answer - RSA
The RSA encryption algorithm is one of the most widely used public key
encryption algorithms that have ever been invented. It was created by the
three scientists Ronald Rivest, Adi Shamir, and Leonard Adleman in 1977, and
today it is increasingly being used in the network area.
Original, unencrypted information is referred to as ____.
+text
+plaintext
+cleantext
+ciphertext Correct Answer - Plaintext
Plaintext is a term used in cryptography that refers to a message before
encryption or after decryption. That is, it is a message in a form that is easily
readable by humans. Encryption is the process of obscuring messages to make
them unreadable in the absence special knowledge
, Which of the following is not an asymmetric system?
+SSL
+DES
+PGP
+RSA Correct Answer - DES
The Data Encryption Standard is a symmetric-key algorithm for the
encryption of electronic data. Although now considered insecure, it was highly
influential in the advancement of modern cryptography.
In order for User A to send User B an encrypted message that only User B can
read, User A must encrypt message with which of the following keys?
+User B's public key
+User B's private key
+User A's public key
+User A's private key Correct Answer - USER B's Public Key
Public key cryptography, or asymmetrical cryptography, is any cryptographic
system that uses pairs of keys: public keys which may be disseminated widely,
and private keys which are known only to the owner
The greatest weakness with symmetric algorithms is _____.
+The problem of key exchange
+The problem of generating keys
+They are slower than asymmetric
+They are less secure than asymmetric Correct Answer - The Problem of
Key exchange
The biggest problem with symmetric key encryption is that you need to have a
way to get the key to the party with whom you are sharing data.
Which of the following is generally true about block sizes?
+Block size is irrelevant to security
+Block sizes must be more than 256 bits to be secure
+Larger block sizes increase security
