added hashing algorithms tutorial

Author: x4nth055

Diff for: README.md

@@ -21,6 +21,7 @@ This is a repository of all the tutorials of [The Python Code](https://www.thepy
     - [How to Use Steganography to Hide Secret Data in Images in Python](https://www.thepythoncode.com/article/hide-secret-data-in-images-using-steganography-python). ([code](ethical-hacking/steganography))
     - [How to Brute-Force SSH Servers in Python](https://www.thepythoncode.com/article/brute-force-ssh-servers-using-paramiko-in-python). ([code](ethical-hacking/bruteforce-ssh))
     - [How to Build a XSS Vulnerability Scanner in Python](https://www.thepythoncode.com/article/make-a-xss-vulnerability-scanner-in-python). ([code](ethical-hacking/xss-vulnerability-scanner))
+    - [How to Use Hash Algorithms in Python using hashlib](https://www.thepythoncode.com/article/hashing-functions-in-python-using-hashlib). ([code](ethical-hacking/hashing-functions/))
 
 - ### [Machine Learning](https://www.thepythoncode.com/topic/machine-learning)
     - ### [Natural Language Processing](https://www.thepythoncode.com/topic/nlp)

Diff for: ethical-hacking/hashing-functions/README.md

@@ -0,0 +1,15 @@
+# [How to Use Hash Algorithms in Python using hashlib](https://www.thepythoncode.com/article/hashing-functions-in-python-using-hashlib)
+To hash a checksum of the file `foo.pdf`:
+    
+    python hashing_files.py foo.pdf
+    
+**Outputs:**
+    
+    MD5: 49260116db5c6dab4cda627fbc6e6455
+    SHA-256: 7d6c24e45b38375e322419281cee1335ddb97e00fc86abe9f22afcd8b42e6d82
+    SHA-512: dd7bdd49300fc2aa76babb4afada70621f35235ff472342fb6efef7150b840ad06c1e081fa20469fc4801139939ce18a3c891f4ca15a45e31d487160b2e6f22e
+    SHA-3-256: 975ef59e80d7eefa5068f7876fa63139436f47582cc7c29d3540c85d241e16be
+    SHA-3-512: 07b8ee04cd2ac390ac6fc4f1598083347ae001d4cc8ddf6e3e0ef35eb7af254232ab70d8105f5b11af704770de81a15f7895499ee8a86a2479352627dac0b594
+    BLAKE2c: 536245433930603620f007577d19b6d993b5dd75267e013c8965e73921db1f81
+    BLAKE2b: 726bfdeb5fed358ce9827ca013e2dc0d7c34ba1d1900ddb5f46b5dd29d46c6e7bd87b610ea8e290765c3aac4d44ddea01d14e5073b8c743c67cd1da1ecdcef01
+    

Diff for: ethical-hacking/hashing-functions/foo.pdf

@@ -0,0 +1,41 @@
+import hashlib
+import sys
+
+def read_file(file):
+    """Reads en entire file and returns file bytes."""
+    BUFFER_SIZE = 16384 # 16 kilo bytes
+    b = b""
+    with open(file, "rb") as f:
+        while True:
+            # read 16K bytes from the file
+            bytes_read = f.read(BUFFER_SIZE)
+            if bytes_read:
+                # if there is bytes, append them
+                b += bytes_read
+            else:
+                # if not, nothing to do here, break out of the loop
+                break
+    return b
+
+if __name__ == "__main__":
+    # read some file
+    file_content = read_file(sys.argv[1])
+    # some chksums:
+    # hash with MD5 (not recommended)
+    print("MD5:", hashlib.md5(file_content).hexdigest())
+
+    # hash with SHA-2 (SHA-256 & SHA-512)
+    print("SHA-256:", hashlib.sha256(file_content).hexdigest())
+
+    print("SHA-512:", hashlib.sha512(file_content).hexdigest())
+
+    # hash with SHA-3
+    print("SHA-3-256:", hashlib.sha3_256(file_content).hexdigest())
+
+    print("SHA-3-512:", hashlib.sha3_512(file_content).hexdigest())
+
+    # hash with BLAKE2
+    # 256-bit BLAKE2 (or BLAKE2s)
+    print("BLAKE2c:", hashlib.blake2s(file_content).hexdigest())
+    # 512-bit BLAKE2 (or BLAKE2b)
+    print("BLAKE2b:", hashlib.blake2b(file_content).hexdigest())

Diff for: ethical-hacking/hashing-functions/hashing_files.py

@@ -0,0 +1,23 @@
+import hashlib
+
+# encode it to bytes using UTF-8 encoding
+message = "Some text to hash".encode()
+
+# hash with MD5 (not recommended)
+print("MD5:", hashlib.md5(message).hexdigest())
+
+# hash with SHA-2 (SHA-256 & SHA-512)
+print("SHA-256:", hashlib.sha256(message).hexdigest())
+
+print("SHA-512:", hashlib.sha512(message).hexdigest())
+
+# hash with SHA-3
+print("SHA-3-256:", hashlib.sha3_256(message).hexdigest())
+
+print("SHA-3-512:", hashlib.sha3_512(message).hexdigest())
+
+# hash with BLAKE2
+# 256-bit BLAKE2 (or BLAKE2s)
+print("BLAKE2c:", hashlib.blake2s(message).hexdigest())
+# 512-bit BLAKE2 (or BLAKE2b)
+print("BLAKE2b:", hashlib.blake2b(message).hexdigest())