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title: a comprehensive guide to sha-256 hashing in python
introduction:
sha-256 (secure hash algorithm 256-bit) is a widely used cryptographic hash function that produces a fixed-size output (256 bits) regardless of the input size. in this tutorial, we'll explore how to use python to perform sha-256 hashing with a step-by-step guide and code examples.
prerequisites:
before you start, make sure you have python installed on your system. you can download it from the official python website (https://www.python.org/downloads/).
step 1: importing the hashlib module
in python, the hashlib module provides a simple interface to various secure hash and message digest algorithms, including sha-256. to use it, import the module in your script:
step 2: creating a function for sha-256 hashing
let's create a function that takes a string as input and returns its sha-256 hash. the hashlib.sha256() object is used for this purpose:
step 3: using the sha-256 hashing function
now, you can use the sha256_hash function to hash any string:
this will output:
step 4: hashing large files
if you need to hash large files, it's more efficient to read the file in chunks rather than loading the entire file into memory. here's an example of how to hash a file using sha-256:
conclusion:
in this tutorial, you've learned how to perform sha-256 hashing in python using the hashlib module. you can now use these examples as a foundation for incorporating secure hashing into your python projects, ensuring the integrity and security of your data.
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