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

Show Suggested Answer

Suggested Answer: D

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

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Vonda

1 months ago

Wait, we're supposed to avoid the problem, not create a new one! Guess I'll have to 'hash' it out with the others on this one. *winks*

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Breana

1 months ago

Option C is tempting, but let's not throw the canonicalization baby out with the bathwater. B is the way to go, folks.

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Temeka

3 days ago

B) Transforms 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

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Lacey

5 days ago

A) Transforms 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

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Desmond

11 days ago

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Clarence

27 days ago

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Osvaldo

29 days ago

A) Transforms 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

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Justine

2 months ago

This is a tricky one, but I think Option B is the right choice. Gotta love those XML shenanigans, am I right? *chuckles*

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Shawnee

27 days ago

Definitely, Option B provides a clear solution to avoid mismatch in message digests.

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Eileen

28 days ago

XML canonicalization can be tricky, but following the correct sequence of actions is key in ensuring message integrity.

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Cruz

29 days ago

I agree, using transforms to align the actions of Service A and Service B is crucial in avoiding this issue.

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Corazon

1 months ago

Option B is definitely the way to go. It ensures that the sequence of actions is followed correctly.

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Salena

2 months ago

That's a valid point, but I still think option A is more appropriate to avoid the mismatch issue.

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Linn

2 months ago

I disagree, I believe option B is better because it first performs XML canonicalization on the original message before calculating the hash.

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Salena

2 months ago

I think option A is the correct answer because it ensures that Service B follows the same sequence of actions as Service A.

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Carman

2 months ago

I agree with Micah. Option B is the way to go. Doing the canonicalization first is crucial to make sure the hashes match.

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Marcos

24 days ago

I agree with you, option A seems like the best way to ensure the message digests match.

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Beatriz

25 days ago

I think option A is the correct solution. Service B needs to follow the same sequence of actions as Service A to avoid the mismatch.

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Micah

2 months 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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Moon

1 months ago

Definitely. It's important for Service B to follow the exact steps as Service A to ensure the integrity of the message digest.

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Rosalind

1 months ago

I agree. Consistency in the sequence of actions between the two services is crucial to avoid any discrepancies in the message digest.

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Hassie

1 months ago

Yes, that's right. Following the same sequence of actions as Service A will ensure that the message digest matches when decrypted by Service B.

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Bette

2 months 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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