SHA in Python



In this tutorial, we are going to learn about the hashlib module that gives us different SHA. (Secure Hash Algorithms) is set of cryptographic hash functions.

Let's install the module by typing the following command.

pip install hashlib

We can see the available algorithms in the hashlib module using algorithms_guaranteed set. Let's see them by running the following code.

Example

 Live Demo

# importing the hashlib module
import hashlib
# printing available algorithms
print(hashlib.algorithms_guaranteed)

Output

If you run the above code, then you will get the following result.

{'sha256', 'sha512', 'sha224', 'shake_256', 'blake2s', 'shake_128', 'sha384', 'sha3_384', 'sha3_512', 'sha3_224', 'md5', 'sha3_256', 'sha1', 'blake2b'}

Example

Let's see an example on how to user sha256 algorithm.

 Live Demo

# importing the hashlib module
import hashlib
# initialinzing a string
# the string will be hashed using the 'sha256'
name = 'Tutorialspoint'
# convert the string to bytes using 'encode'
# hash functions only accepts encoded strings
encoded_name = name.encode()
# Now, pass the encoded_name to the **sha256** function
hashed_name = hashlib.sha256(encoded_name)
# we have hashed object
# we can't understand it
# print the hexadecimal version using 'hexdigest()' method
print("Object:", hashed_name)
print("Hexadecimal format:", hashed_name.hexdigest())

Output

If you run the above code, then you will get the following result.

Object: <sha256 HASH object @ 0x000002A416E1BAE0>
Hexadecimal format: 447c2329228a452aa77102dc7d4eca0ee4c6d52a17e9c17408f8917e51e
3

Conclusion

You can use the remaining algorithms similar to the sha256. If you have any queries in the tutorial, mention them in the comment section.


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