Cryptography « Communication Theory « Applications « Math

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Crypto Frequently asked questions - Frequently asked questions (FAQ) on cryptography by RSA Security Inc.
Cryptography and the National Security Agency - Official NSA site. Cryptographic standards, research, and resources.
Cryptography Developments in India - Call for papers, Companies, Jobs, Government Sites, Nonprofit Organizations, Researchers, Research Groups, University Courses
Cryptology Research Society of India - Conducts annual conference INDOCRYPT and National workshop on Cryptography. Also promotes research activities in cryptology and security in India.
International Association for Cryptologic Research - Conducts annual confs Crypto, Eurocrypt, Asiacrypt, PKC, CHES. Publishes Journal of Cryptology. Site has links to Calendar of events and maintains famous E-print server.
National Institute of Standards and Technology - Computer Security Division Resource Center - CSD publications, events, cryptographic standards and applications. Information on security testing, security management, and research initiatives. Includes links to the national vulnerability cyber database.