SCP Exam SC0-501 Topic 2 Question 102 Discussion

Actual exam question for SCP's SC0-501 exam

Question #: 102
Topic #: 2

One important X.509v3 extension in a digital certificte is the SubjectKeyldentifier. What is the purpose of this field?

AThis extension contains a hash of the end entity's private key. This allows a user to decrypt the end entity's private key using the publisheed public key and recalulate the hash value of the private key on the certificate to look for a match. If the calculation matches the SubjectKeyldentifier value, then the end entity can be validated.

BThis extension contains a hash of the subject's This allows a user to decrypt the subject's private key using the publisheed public key and recalulate the hash value of the private key on the certificate to look for a match.If the calculation matches the SubjectKeyldentifier value, then the subject can be validated.

CThis extension has a hash of the subject's public key. This allows a user to calculate the hash value of the public key on the certificate to look for a match. If the calculation matches the SubjectKeyldentifier value, then the subject can be validated.

DThis extension has a hash of the issue's public key. This allows a user to calculate the hash value of the public key on the certificate to look for a match. If the calculation matches the SubjectKeyldentifier value, then the CA can be validated.

Show Suggested Answer

Suggested Answer: D

by Chaya at Oct 21, 2024, 11:34 PM

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Jeffrey

2 days ago

I was leaning towards B, but now I'm second-guessing myself. Can't the SubjectKeyIdentifier also be used to validate the subject's identity? This stuff can get so confusing sometimes.

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Jerry

5 days ago

Hmm, this one's tricky. I think the answer is C, but I'm not 100% sure. The SubjectKeyIdentifier is supposed to contain a hash of the subject's public key, right?

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Cammy

26 days ago

I agree with you, Gerardo. This allows a user to validate the subject by matching the hash value of the public key.

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Gerardo

30 days ago

I think the purpose of the SubjectKeyIdentifier is to contain a hash of the subject's public key.

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