Intro to Cryptography WGU C839 Module 4 Already Passed
Complete Questions and Guide Answers
100% Verified Graded A+
1. These are usually the encryption of a message digest with the senders private
key.
In order to verify them, the recipient uses the senders public key.
They are considered good if they provide the following.
Authentication
Integrity
Non-repudiation
Answer: Digital Signature
2. It is a digital document that contains a public key and some information to
allow your system to verify where they key came from.
This is the most common way to distribute pubic keys in asymmetric cryptog-
raphy.
Answer: Digital Certificate
3. uses asymmetric key pairs and combines software, encryption and services
,to provide a means of protecting the security of business communications and
transactions.
Answer: PKI (Public Key Infrastructure)
4. They are in place by the RSA to ensure uniform certificate management
throughout the internet
Answer: PKCS (Public Key Cryptography Standards)
5. A certificate is a digital representation of information that identifies you as a
relevant entity by a?
Answer: Trusted Third Party (TTP)
6. This is an entity trusted by one or more users to manage certificates
Answer: CA (Certificate Authority)
7. Used to take the burden off of a CA by handling verification prior to certifi-
cates being issues. They act as a proxy between user and CA. They receive
requests, authenticate them and forward them to the CA. RA (Registration Authority)
8. is a set of rules that defines how a certificate may be used.
Answer: CP (Certificate Policy)
9. An international standard for the format and information contained in a
certificate. The most common type of digital certificate in the world.
Relied on by S/MIME
, Contains your name, info about you and signature of the person who issued
the certificate
Answer: X.509
10. List of certificates issued by a CA that are no longer valid
Answer: CRL (Certificate Revocation List)
11. CRL Distribution Method
CA automatically sends the CRL out at regular intervals
Answer: PUSH Model
12. CRL Distribution Method
The CRL is downloaded from the CA by those who want to see verify a certifi-
cate. This is the end users responsibility
Answer: Pull Method
13. Is a Base64 encoded DER certificate, enclosed between "-
----- BEGIN CERTIFICATE ------" AND
"------ END CERTIFICATE ------"
Answer: .pem
14. Usually in binary DER form, but Base64-encoded certificates are common
too.
Answer: .cer, .crt, .der
Complete Questions and Guide Answers
100% Verified Graded A+
1. These are usually the encryption of a message digest with the senders private
key.
In order to verify them, the recipient uses the senders public key.
They are considered good if they provide the following.
Authentication
Integrity
Non-repudiation
Answer: Digital Signature
2. It is a digital document that contains a public key and some information to
allow your system to verify where they key came from.
This is the most common way to distribute pubic keys in asymmetric cryptog-
raphy.
Answer: Digital Certificate
3. uses asymmetric key pairs and combines software, encryption and services
,to provide a means of protecting the security of business communications and
transactions.
Answer: PKI (Public Key Infrastructure)
4. They are in place by the RSA to ensure uniform certificate management
throughout the internet
Answer: PKCS (Public Key Cryptography Standards)
5. A certificate is a digital representation of information that identifies you as a
relevant entity by a?
Answer: Trusted Third Party (TTP)
6. This is an entity trusted by one or more users to manage certificates
Answer: CA (Certificate Authority)
7. Used to take the burden off of a CA by handling verification prior to certifi-
cates being issues. They act as a proxy between user and CA. They receive
requests, authenticate them and forward them to the CA. RA (Registration Authority)
8. is a set of rules that defines how a certificate may be used.
Answer: CP (Certificate Policy)
9. An international standard for the format and information contained in a
certificate. The most common type of digital certificate in the world.
Relied on by S/MIME
, Contains your name, info about you and signature of the person who issued
the certificate
Answer: X.509
10. List of certificates issued by a CA that are no longer valid
Answer: CRL (Certificate Revocation List)
11. CRL Distribution Method
CA automatically sends the CRL out at regular intervals
Answer: PUSH Model
12. CRL Distribution Method
The CRL is downloaded from the CA by those who want to see verify a certifi-
cate. This is the end users responsibility
Answer: Pull Method
13. Is a Base64 encoded DER certificate, enclosed between "-
----- BEGIN CERTIFICATE ------" AND
"------ END CERTIFICATE ------"
Answer: .pem
14. Usually in binary DER form, but Base64-encoded certificates are common
too.
Answer: .cer, .crt, .der
