By using Paython 3.7:

Cryptographic Hash Functions

For cryptographic hash functions, we experiment with SHA-256 and SHA-512. Two tasks need to be completed for each of SHA-256 and SHA-512.

1-

Validation: Compute the hash of the string "Hello world!" (12 bytes). Print at least the first 4 bytes and the last 4 bytes in hexadecimal format.

Make sure it matches with 'C0535E4B...1AD9E51A' for SHA-256 and 'F6CDE2A0...85FFB5B6' for SHA-512.

2-

Performance evaluation: Create a message of 256M (256*1024*1024) bytes that are all 0's. Time the process to compute its hash. Calculate the performance in MB/s.

You may need to run the experiment for multiple times in order to calculate the average performance.

Steps of solutions are required.

Thank you very much