Arcitura Education Exam S90.18 Topic 5 Question 107 Discussion

Actual exam question for Arcitura Education's S90.18 exam

Question #: 107
Topic #: 5

Service A carries out XML canonicalization and creates a message digest. It then encrypts the message digest using asymmetric encryption. Service B. upon receiving the message, decrypts the message hash and calculates the hash of the original message. However, upon comparison, the received message digest and the calculated message digest do not match. How can this problem be avoided?

ATransforms need to be used so that Service B is provided the sequence of actions used by Service A . That way, Service B will know that it has to calculate the original message's hash first, and then perform XML canonicalization on the original message, and only then compare it against the decrypted message hash

BTransforms need to be used so that Service B is provided the sequence of actions used by Service A. That way, Service B will know that it has to perform XML canonicalization on the original message first, then calculate its hash, and only then compare it against the decrypted message hash

CXML canonicalization should not be performed because it is the cause of the mismatch and will also unnecessarily increase the message size

DNone of the above

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Suggested Answer: D

by Annice at Feb 08, 2025, 07:59 AM

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15 days ago

Option B seems to be the correct answer. Performing XML canonicalization before calculating the hash makes sense, as it ensures the message is in a standard format before the hash is generated.

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