Digital signatures and certificates in Computer Networks - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the sentence to explain what a digital signature does.

Computer Networks

A digital signature is used to verify the [1] of a message.

Drag options to blanks, or click blank then click option'

Aorigin

Blength

Ccolor

Dspeed

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing digital signature with encryption that hides content.

A digital signature confirms the origin of a message, ensuring it comes from the claimed sender.

2fill in blank

medium

Complete the sentence to describe what a certificate contains.

Computer Networks

A digital certificate contains the public key and the [1] of the owner.

Drag options to blanks, or click blank then click option'

Aidentity

Bpassword

Cmessage

Dprivate key

Attempts:

3 left

💡 Hint

Common Mistakes

Thinking the private key is shared in the certificate.

A digital certificate includes the public key and the identity of the owner to verify who the key belongs to.

3fill in blank

hard

Fix the error in the statement about certificate authorities.

Computer Networks

A certificate authority (CA) [1] digital certificates to verify identities.

Drag options to blanks, or click blank then click option'

Adestroys

Bissues

Cignores

Dhides

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing issuing with destroying or hiding certificates.

Certificate authorities issue digital certificates to confirm identities and build trust.

4fill in blank

hard

Fill both blanks to describe how digital signatures work.

Computer Networks

The sender creates a hash of the message using [1] and then encrypts it with their [2] key.

Drag options to blanks, or click blank then click option'

Aa hash function

Bpublic

Cprivate

Da password

Attempts:

3 left

💡 Hint

Common Mistakes

Using the public key for encryption instead of the private key.

The sender uses a hash function to create a message summary and encrypts it with their private key to create a digital signature.

5fill in blank

hard

Fill all three blanks to explain certificate verification.

Computer Networks

To verify a certificate, the receiver checks the [1] key, confirms the [2], and ensures the certificate is signed by a trusted [3].

Drag options to blanks, or click blank then click option'

Aprivate

Bidentity

Ccertificate authority

Dpublic

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing private key with public key in verification.

The receiver checks the public key, confirms the identity, and verifies the certificate is signed by a trusted certificate authority.