Cryptanalysis

Cryptanalysis

Here are some words with the prefix crypto. Cryptanalytics, cryptoanarchy, cryptobranchiate, cryptolect, cryptology, cryptonym, cryptomaterial, cryptomodule, cryptosystem, cryptocurrency, cryptocustodian, cryptocyanin, cryptosecurity, and cryptogenic.

Public Key Cryptography is a method of secure communication. It involves the creation of both a public and a private key. When sending a message, the sender encrypts the message with the recipients public key. After receiving the message, the recipient may then decode the message with his/her associated private key.

One area that public key cryptography is used in is SSL / TLS (Secure Socket Layer). An example of an SSL library is the CyaSSL Embedded SSL Library. CyaSSL provides several public key cryptography options, including RSA, DSS, DH, and NTRU.

In addition to SSL, Public Key Cryptography is used in a large variety of techniques, algorithms, and protocols including:

Diffie-Hellman key exchange protocol

RSA Encryption Algorithm

Cramer-Shoup cryptosystem

NTRUEncrypt cryptosystem

GPG, OpenPGP

Internet Key Exchange

PGP

The kind of attack you are referring to is known as a known-plaintext attack. In this type of attack, the attacker has access to both the plaintext and the corresponding ciphertext, and the goal is to deduce the encryption key or algorithm used. By analyzing the patterns or relationships between the known plaintext and ciphertext, the attacker can potentially uncover vulnerabilities in the cryptosystem.