S/Key: One-Time Password

Building on the previous module defining cryptographic hash functions, this module review its uses and applications. We will first describe hash chain, which chains multiple hash functions in sequence, and apply hash chain for generating one-time passwords using a scheme called S/Key. Then, we will use hash functions to construct a binary tree and describe hash tree, also known as Merkle tree. Lastly, we will review the applications of hash function and hash tree for decentralized digital currency in the forms of cryptocurrency or bitcoins.

О Coursera

На онлайн-курсах, специализациях и дипломных программах у вас будут первоклассные преподаватели из лучших университетов и учебных заведений мира.

Join a community of 40 million learners from around the world
Earn a skill-based course certificate to apply your knowledge
Gain confidence in your skills and further your career