** (West Bengal University of Technology, West Bengal, India) *** (West Bengal State University, West Bengal, India) ABSTRACT Key management represents a major and the most sensitive part of cryptographic systems. It includes key generation, key distribution, key storage, and key deletion. It is also considered the hardest part of cryptography. Designing secure cryptographic algorithms is hard,...

To the Editor of "The Indian Medical Gazette." Sir,?I desire to draw attention to the following plant:? The parts used.?The roots?they are black in colour externally, and slightly whitish internally. From a knotty bulb numerous rootlets are given off. Inodorous, tasteless ; this fern abundantly grows in]any part of Bengal and Behar, especially on the bank of rivers and in bamboo hedge. They can...