The purpose of cryptanalysis is to determine the strength of an encryption algorithm, right?

The purpose of cryptanalysis is to determine the strength of the encryption algorithm, yes.

Introduction to relevant knowledge points:

What is cryptanalysis?

Cryptoanalysis (English: cryptanalysis, derived from the Greek kryptós, meaning "hidden", and analýein, meaning "unraveling"), is the study of situations where the secret information usually required for decryption is not known. Understand the knowledge of decrypting information.

Usually, this requires finding a secret key. It is also called cracking the password.

The term cryptanalysis is sometimes used to refer to attempts to circumvent a cryptographic algorithm or cryptographic protocol in a broad sense, rather than just for encryption algorithms. However, cryptanalysis generally excludes attacks that are not primarily directed against cryptographic algorithms or protocols.

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