With the encoding of plaintext
The prefix “crypt-” means “hidden” or “vault” – and the suffix “-graphy” means “writing.” In computing, cryptography refers to secure communication and information techniques derived from mathematical concepts and rule-based calculations called algorithms, to transform messages into forms that are difficult to decipher.These deterministic algorithms are used for cryptographic Phone Number List key generation, digital signing, verification to protect data privacy, web browsing on the Internet, and confidential communications such as credit card transactions and email. Cryptography techniques Cryptography is closely related to the disciplines of cryptology and cryptanalysis.
http://zh-cn.emaildata.me/wp-content/uploads/2023/12/Phone-Number-List.png
It includes techniques such as microdots, merging words with images, and other ways to hide information in storage or in transit. However, in today's computer-centric world, cryptography is most often associated(ordinary text, sometimes called cleartext) into ciphertext (a process called encryption) and new text (known as decrypted). People who practice this field are known as cryptographers. Modern cryptography is concerned with the following four objectives:
頁:
[1]