The correct answer is Cryptanalysis. Cryptanalysis is the process of decrypting coded messages without being given the key. It involves analyzing and breaking the cipher or encryption system used to secure the message. This can be done through various techniques such as frequency analysis, brute force attacks, or exploiting vulnerabilities in the encryption algorithm. Cryptography, on the other hand, is the process of encoding messages to keep them secure and confidential. It involves creating and using encryption systems to transform plaintext into ciphertext. Cryptology is a broader term that encompasses both cryptography and cryptanalysis.
