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Isaca CDPSE Exam - Topic 10 Question 55 Discussion

Actual exam question for Isaca's CDPSE exam
Question #: 55
Topic #: 10
[All CDPSE Questions]

Which encryption method encrypts and decrypts data using two separate yet mathematically connected cryptographic keys?

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Suggested Answer: C

Asymmetric encryption, also known as public-key encryption, encrypts and decrypts data using two separate yet mathematically connected cryptographic keys. One key is called the public key and can be shared with anyone, while the other key is called the private key and must be kept secret. The public key is used to encrypt the data, and only the corresponding private key can decrypt it. Likewise, the private key can be used to sign the data, and only the corresponding public key can verify it. This method provides confidentiality, integrity, authentication and non-repudiation for data.


by Tomoko at Sep 17, 2024, 11:12 PM

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Leah
6 months ago
I thought it was symmetric at first, but C makes sense!
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Tricia
6 months ago
Nope, it's not B, that's for private key encryption.
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Marguerita
6 months ago
Wait, is it really just two keys? Sounds too simple.
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King
7 months ago
Agreed, two keys are the key!
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Lisbeth
7 months ago
It's definitely C, Asymmetric encryption!
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Nelida
7 months ago
Hashing doesn’t use keys at all, so it can’t be the answer. I’m leaning towards C as well.
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Rolland
7 months ago
I’m a bit confused; I thought private key was also about two keys, but maybe that’s not the right term here?
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Stephen
7 months ago
I remember studying about symmetric and asymmetric encryption, and I think asymmetric is the one with two keys.
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Bettina
8 months ago
I think the answer might be C, Asymmetric, because it uses two keys, right? But I'm not completely sure.
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Coral
8 months ago
I'm not totally confident, but I think the answer is C. Asymmetric encryption uses two different keys, which seems to match the description in the question.
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Bok
8 months ago
Okay, I've got this. Asymmetric encryption uses two separate keys - a public key for encrypting and a private key for decrypting. That's the method that fits the description in the question.
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Laurene
8 months ago
Hmm, I'm a bit confused on the difference between symmetric and asymmetric encryption. I'll need to review those concepts before answering this.
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Antonio
8 months ago
I'm pretty sure this is asking about asymmetric encryption, where you have a public and private key. Let me think this through...
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Myong
8 months ago
I'm a bit unsure about the best approach. Didn't we discuss the importance of verifying message integrity in class? Maybe the Data Origin Authentication pattern would fit here?
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Lynelle
2 years ago
Ah, the age-old battle between symmetric and asymmetric encryption. It's like choosing between a handshake and a fist bump – both get the job done, but one's just more fun.
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Audry
2 years ago
I like the idea of using two separate keys for encryption, it adds an extra layer of security.
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Jeannine
2 years ago
Symmetric encryption is like sharing the same key to unlock a treasure chest, simple and effective.
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Kate
2 years ago
I prefer asymmetric encryption, it's like a secret code only certain people can crack.
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Herman
2 years ago
Hashing? Nah, that's more like hiding your secrets in plain sight. Give me that asymmetric encryption any day!
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Glen
2 years ago
I'm not sure, but isn't asymmetric encryption the one where you need a secret decoder ring to figure out the keys? Sounds like a spy movie to me!
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Lynda
2 years ago
Joanna: Yes, one for encryption and one for decryption.
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Nilsa
2 years ago
User 3: So it's like having two separate keys that work together to keep the data secure.
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Rodolfo
2 years ago
User 2: Yes, asymmetric encryption uses a public key for encryption and a private key for decryption.
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Anjelica
2 years ago
User 3: So, asymmetric encryption uses two keys?
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Joanna
2 years ago
That's correct!
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Melda
2 years ago
Asymmetric
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Novella
2 years ago
Asymmetric
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Carisa
2 years ago
I'm not sure, but I think D) Symmetric encryption uses the same key for both encryption and decryption.
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Felicitas
2 years ago
I agree with Charolette, asymmetric encryption uses two keys for encryption and decryption.
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Charolette
2 years ago
I think the answer is C) Asymmetric.
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Arlette
2 years ago
Symmetric encryption? Really? That's so last century. C'mon, let's get with the times and go for asymmetric encryption!
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Sueann
2 years ago
True, but for most modern applications, asymmetric encryption is the way to go.
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Hubert
2 years ago
Symmetric encryption may be old school, but it still has its uses in certain situations.
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Lashaunda
2 years ago
I agree, using two separate keys just makes it harder for hackers to crack.
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Tawanna
2 years ago
Asymmetric encryption is definitely the way to go. It's much more secure.
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Karrie
2 years ago
Asymmetric encryption seems like the obvious choice here. I mean, who doesn't love the idea of keeping their data secure with two keys?
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Gilma
2 years ago
Definitely, using two keys for encryption and decryption adds an extra layer of protection.
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Willow
2 years ago
I agree, asymmetric encryption is the way to go for double the security.
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