What is Cryptography?

An explanation of Cryptography, one of the core technologies behind cryptocurrencies and blockchain technology!

NOTE: I stand corrected in that yes, Cryptography is a way to secure communication over an insecure channel, but encryption is only one of the branches of cryptography. This can be compared to examples such as signing, commitment schemes, private information retrieval, offline digital cash, etc., which also fall under cryptography. Learn more: https://media.ccc.de/v/SHA2017-494-cryptography_beyond_encryption_and_signatures

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