S/Key

Definition

S/key is a security authentication protocol that protects user accounts and sensitive data. It ensures passwords are used only once, providing robust protection against unauthorized access.

The authentication process begins with creating a master key, which forms a base for generating one-time passwords. A cryptography algorithm is used to derive the passwords, ensuring each password is unpredictable and unique.

S/Key Applications

• Remote access: S/Key ensures secure remote access with one-time passwords for authorized login.
• Two-Factor authentication (2FA): S/Key adds an extra layer of security by incorporating one-time passwords alongside usernames and passwords.
• High-Security environments: S/Key’s one-time password system addresses risks in the government, defense, finance, and healthcare sectors.
• Online banking and E-commerce: S/Key boosts security in financial transactions by mandating one-time passwords for access.
• Password recovery: S/Key offers secure password recovery using temporary one-time passwords.