© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2023
A. LisdorfStill Searching for Satoshihttps://doi.org/10.1007/978-1-4842-9639-4_2

2. Cryptography

Anders Lisdorf1  
(1)
Lisdorf Consulting, København SV, Denmark
 

Bitcoin gave rise to the specific type of virtual currency known as cryptocurrency. The reason for this name is the extended use of cryptography. A fundamental purpose of cryptography is to maintain confidentiality and integrity in communication, which is done through encryption. In cryptography, the message to be communicated is called the plain text and can be read by anyone who understands the language. The encrypted message is called the ciphertext and will not be intelligible to anyone.

There ...

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