Cryptography Explained: How It Secures Your Communications 🔐

Cryptography is a method of protecting information and communications using codes, so that only those for whom the information is intended can read and process it✅🔐🔢🙈.

In computer science, cryptography refers to secure information and communication techniques derived from mathematical concepts and a set of rule-based calculations called algorithms, to transform messages in ways that are hard to decipher. ✅🔐🔢🙈These deterministic algorithms are used for cryptographic 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 is about constructing and analyzing protocols that prevent third parties or the public from reading private messages. ✅🔐🔢🙈Modern cryptography exists at the intersection of the disciplines of mathematics, computer science, information security, electrical engineering, digital signal processing, physics, and others. ✅🔐🔢🙈Core concepts related to information security (data confidentiality, data integrity, authentication, and non-repudiation) are also central to cryptography. Practical applications of cryptography include electronic commerce, chip-based payment cards, digital currencies, computer passwords, and military communications✅🔐🔢🙈.

Cryptography prior to the modern age was effectively synonymous with encryption, converting readable information (plaintext) to unintelligible nonsense text (ciphertext), which can only be read by reversing the process (decryption). ✅🔐🔢🙈The sender of an encrypted (coded) message shares the decryption (decoding) technique only with the intended recipients to preclude access from adversaries✅🔐🔢🙈.


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