1 - 10 points) A security breach has ben detected in our organization and we believe that if we can derive the hashing algorithm employed we could potentially top the breach.

Our cybersecurity team has determined that plaintext 911 was used during the communication, with resulting 160 bits nonce of f3751173cf413033da9676f3ac6086157005059c.

Select from the following which hashing algorithm was used and justify your answer.

a )SHA256

b )SHA1`

c )MD5

d) LANMAN

2 - 10 points) Using Caesar cipher and shift of 23 obtain the cleartext corresponding with the ciphertext.

chur wzr qlqh ilyh.

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