SSCP · Question #1118
Which of the following is an example of One-Time Password technology? (Choose all that apply)
The correct answer is A. S/Key B. OPIE. S/Key and OPIE are both examples of One-Time Password (OTP) technologies, which generate unique passwords for each login session to enhance security.
Question
Which of the following is an example of One-Time Password technology? (Choose all that apply)
Options
- AS/Key
- BOPIE
- CLC3
- DMD5
How the community answered
(26 responses)- A88% (23)
- C4% (1)
- D8% (2)
Why each option
S/Key and OPIE are both examples of One-Time Password (OTP) technologies, which generate unique passwords for each login session to enhance security.
S/Key is an early implementation of a one-time password system that uses a cryptographic hash chain to generate a sequence of passwords from a shared secret, ensuring each password is used only once.
OPIE (One-time Passwords In Everything) is a modernized and more secure version of the S/Key system, also based on a hash chain for generating one-time passwords, improving upon S/Key's design.
LC3 (Low Complexity Communication Codec) is an audio codec used for Bluetooth Low Energy, unrelated to password technology.
MD5 is a cryptographic hash function, but it is a component that can be used within OTP generation, not an OTP technology system itself.
Concept tested: One-Time Password technologies
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