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Which of the following is true about using the SHA - 1 hash to authenticate encrypted messages? Group of answer choices a . It is

Which of the following is true about using the SHA-1 hash to authenticate encrypted messages?
Group of answer choices
a. It is considered secure for authentication and is still in use.
b. There are theoretical ways to create collisions for SHA-1, but these have not been replicated in the real world. Since the attacks are only theoretical SHA-1 is still considered safe to use for authentication.
c. SHA-1 is considered broken because it is not collision resistant, and it should not be used for authentication.
d. SHA-1-128 is considered broken and should not be used for authentication. SHA-1-256 and SHA-1-512 are still considered secure and are still in use.
None of the above

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