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A digital signature is a type of public key cryptography. Which of the following statements are true about digital signatures? Each correct answer represents a complete solution. Choose all that apply.
Suggested Answer: C, D
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21 comments · newest first
JA
Janna
2 days ago
I think option C is definitely true. You need the private key to sign.
CE
Cecil
7 days ago
Yes, A and B are misleading. Public key is for verification only.
MA
Matthew
12 days ago
Exactly! So C and D are the correct answers.
RO
Royce
18 days ago
Right? A is incorrect. Signing requires the private key, not public.
VE
Veta
23 days ago
I feel confused about A. Why would you need a public key to sign?
CE
Cecil
28 days ago
Agreed! Option D is also true. You verify with the public key.
MA
Matthew
1 month ago
I think option C is definitely true. You need the private key to sign.
TA
Tarra
1 month ago
A and C are incorrect, only B and D are right!
FE
Fernanda
1 month ago
D is definitely true, you need the public key to verify.
BE
Benedict
2 months ago
Wait, are you sure about that? I thought it was the public key for signing.
AL
Alberto
2 months ago
Totally agree, it's all about the private key for signing!
LA
Lacresha
2 months ago
A digital signature uses the signer's private key to sign.
GI
Gilberto
2 months ago
A and C are incorrect, only B and D are right!
DA
Daniel
2 months ago
D is definitely true, you need the public key to verify.
SH
Sharan
2 months ago
Wait, are you sure about that? I thought it was the public key for signing.
MO
Mohammad
3 months ago
Totally agree, it's all about the private key for signing!
FE
Felicitas
3 months ago
A digital signature uses the signer's private key to sign.
YE
Yen
3 months ago
I’m confused about B. I thought the private key was used for signing, not for verification. So I’m not sure if that one is correct.
KA
Karan
3 months ago
I practiced a question similar to this, and I believe D is definitely true. You need the public key to verify a digital signature.
QU
Quentin
3 months ago
I'm a bit unsure about A. It sounds wrong because I feel like the public key is used for verification, not signing.
TE
Tegan
4 months ago
I think I remember that to sign something digitally, you actually use your private key, not the public key. So C should be correct.