Hashing algorithms (SHA, MD5) in Cybersecurity - Mini Project: Build & Apply

Understanding Hashing Algorithms: SHA and MD5

📖 Scenario: You work in cybersecurity and need to understand how to create hash values for data using common hashing algorithms. Hashing helps verify data integrity and secure passwords.

🎯 Goal: Build a simple Python program that creates hash values of a message using MD5 and SHA-256 algorithms.

📋 What You'll Learn

Create a string variable with a specific message

Create variables for MD5 and SHA-256 hash objects

Generate hash values from the message using these objects

Display the hexadecimal hash results

💡 Why This Matters

🌍 Real World

Hashing algorithms are used in cybersecurity to verify data integrity, store passwords securely, and detect changes in files.

💼 Career

Understanding hashing is essential for roles in cybersecurity, software development, and data protection to implement secure authentication and data verification.

1

Create the message string

Create a string variable called message and set it to the exact text 'Hello, cybersecurity!'.

Cybersecurity

# Create the message string
# Your code here

Need a hint?

Use single or double quotes to create the string exactly as shown.

2

Import hashlib and create hash objects

Import the hashlib module. Then create two variables: md5_hash and sha256_hash by calling hashlib.md5() and hashlib.sha256() respectively.

Cybersecurity

message = 'Hello, cybersecurity!'
# Import hashlib and create md5_hash and sha256_hash objects
# Your code here

Need a hint?

Use import hashlib at the top. Then call hashlib.md5() and hashlib.sha256() to create the hash objects.

3

Update hash objects with the message bytes

Use the update() method on md5_hash and sha256_hash to add the bytes of message. Convert message to bytes using message.encode().

Cybersecurity

import hashlib

message = 'Hello, cybersecurity!'

md5_hash = hashlib.md5()
sha256_hash = hashlib.sha256()

# Update md5_hash and sha256_hash with message bytes
# Your code here

Need a hint?

Call update() on each hash object with message.encode() to convert the string to bytes.

4

Get hexadecimal digest of hashes

Create two variables: md5_result and sha256_result. Assign them the hexadecimal digest strings by calling hexdigest() on md5_hash and sha256_hash respectively.

Cybersecurity

import hashlib

message = 'Hello, cybersecurity!'

md5_hash = hashlib.md5()
sha256_hash = hashlib.sha256()

md5_hash.update(message.encode())
sha256_hash.update(message.encode())

# Get hexadecimal digest strings
# Your code here

Need a hint?

Use hexdigest() method on each hash object to get the hash as a readable hex string.