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Cryptography, or cryptology (from Ancient Greek: κρυπτός, romanized: kryptós "hidden, secret"; and γράφειν graphein, "to write", or -λογία-logia, "study", respectively [1]), is the practice and study of techniques for secure communication in the presence of adversarial behavior. [2]
Cryptology Research Society of India (CRSI) is a scientific organisation that supports research in India on cryptography, data security, and related fields. [ 1 ] [ 2 ] The organisation was founded in 2001. [ 2 ]
In cryptography, a hybrid cryptosystem is one which combines the convenience of a public-key cryptosystem with the efficiency of a symmetric-key cryptosystem. [1] Public-key cryptosystems are convenient in that they do not require the sender and receiver to share a common secret in order to communicate securely. [2]
The following outline is provided as an overview of and topical guide to cryptography: Cryptography (or cryptology) – practice and study of hiding information. Modern cryptography intersects the disciplines of mathematics, computer science, and engineering. Applications of cryptography include ATM cards, computer passwords, and electronic ...
Countries may wish to restrict import of cryptography technologies for a number of reasons: Imported cryptography may have backdoors or security holes (e.g. the FREAK vulnerability), intentional or not, which allows the country or group who created the backdoor technology, for example the National Security Agency (NSA), to spy on persons using the imported cryptography; therefore the use of ...
There are a number of standards related to cryptography. Standard algorithms and protocols provide a focus for study; standards for popular applications attract a large amount of cryptanalysis . Encryption standards
In cryptography, a semantically secure cryptosystem is one where only negligible information about the plaintext can be feasibly extracted from the ciphertext.Specifically, any probabilistic, polynomial-time algorithm (PPTA) that is given the ciphertext of a certain message (taken from any distribution of messages), and the message's length, cannot determine any partial information on the ...
Blockchain technology secures and authenticates transactions and data through cryptography. [5] With the rise and widespread adoption of technology, data breaches have become frequent. [6] User information and data are often stored, mishandled, and misused, causing a threat to personal privacy. [5]