Which security device resembles a credit card and stores authentication information, such as a private key, on an embedded processor?

Which security device resembles a credit card and stores authentication information, such as a private key, on an embedded processor?

• A. Smart cards
• B. Biometric authentication
• C. Passwordless
• D. Hard authentication token

Answer: (A)

Smart cards are credit-card–size devices that contain an on-board processor and secure memory, allowing them to securely store authentication credentials such as private keys and perform cryptographic operations internally. Because the private key never leaves the card, the user can authenticate by presenting the card (and often entering a PIN) to a reader, providing strong, portable security. Biometric authentication describes using a physical trait for verification, not a hardware device that stores keys. Passwordless refers to a method of authentication, not the specific device form factor. A hard authentication token is typically a separate device (like a key fob or USB dongle) that generates codes or performs tokens, and isn’t the same credit-card–sized device designed to securely store keys on an embedded processor.

Smart cards are credit-card–size devices that contain an on-board processor and secure memory, allowing them to securely store authentication credentials such as private keys and perform cryptographic operations internally. Because the private key never leaves the card, the user can authenticate by presenting the card (and often entering a PIN) to a reader, providing strong, portable security.

Biometric authentication describes using a physical trait for verification, not a hardware device that stores keys. Passwordless refers to a method of authentication, not the specific device form factor. A hard authentication token is typically a separate device (like a key fob or USB dongle) that generates codes or performs tokens, and isn’t the same credit-card–sized device designed to securely store keys on an embedded processor.