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Context Your task is to analyze the following general theoretical statements about cryptography. Claims 1 . geoquad Cryptography deals with methods of breaking codes.

Context
Your task is to analyze the following general theoretical statements about cryptography.
Claims
1.\geoquad Cryptography deals with methods of breaking codes.
2.\geoquad Cryptography and coding theory are different names for the same topic.
3.\geoquad Cryptoanalysis deals with the construction of new codes.
4.\geoquad We call the output of plaintext encryption a code.
5.\geoquad By deciphering the code, we get the key.
6.\geoquad Symmetric cryptography uses the same key for encryption and decryption.
7.\geoquad Asymmetric cryptography uses the same key for encryption and decryption.
8.\geoquad The code key serves us only for encryption.
9.\geoquad The code key is only used for decryption.
10.\geoquad The cryptosystem consists exclusively of message space (open texts), cipher space and space
keys.
11.\geoquad Cryptographic systems are used exclusively for secrecy of communication.
12.\geoquad The cryptosystem consists exclusively of encryption and decryption functions.
13.\geoquad An encryption system should not imply secrecy and should not be a problem if it falls into
enemy hands.
14.\geoquad The goal of an attack on a cryptosystem is (primarily) key reconstruction.
15.\geoquad Some keys can only be reconstructed by knowing the ciphers.
16.\geoquad Cryptographic systems are completely secure and cannot be broken.
17.\geoquad A brute-force attack involves trying all possible keys until the correct one is found.
18.\geoquad Communication is certainly secret if a good cryptosystem is chosen.
19.\geoquad Communication is certainly secret if a good cryptosystem is chosen and used correctly.
20.\geoquad Cryptosystems in standard libraries of programming languages are always well implemented.
21.\geoquad Implementing your own cryptosystem is always a bad idea.
22.\geoquad Monoalphabetic codes concern only the Latin alphabet.
23.\geoquad Monoalphabetic ciphers always encrypt the symbol in the same way regardless of its position in the text.
24.\geoquad Polyalphabetic codes always encode a symbol in the same way regardless of its position in the text.
25.\geoquad Different cryptographic algorithms have different strengths and weaknesses.
26.\geoquad All modern cryptographic systems are based on classical methods.
27.\geoquad We call a cipher symmetric if its message space is identical to the cipher space.
28.\geoquad We call a cipher symmetric if encryption and decryption use the same key.
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