Which of the following is the process of finding weaknesses in cryptographic algorithms and obtaining the plaintext or key from the ciphertext?

A cryptographer is a person who designs and implements cryptographic systems, not the process of breaking them.

Cryptography is the science of secure communication in the presence of adversaries, focusing on designing secure systems, not breaking them.

Kerberos is a specific network authentication protocol, not a general process for breaking cryptographic algorithms.

Cryptanalysis is the specific field dedicated to breaking cryptographic systems, aiming to obtain the plaintext or the secret key without knowing it beforehand. It involves analyzing ciphertext, algorithms, and protocols to discover vulnerabilities that can be exploited for decryption.