Added script for hashing files

Author: harshareddy794

Hashing file/app.py

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+import sys 
+import hashlib
+
+methods = {
+  '1':'md5',
+  '2':'sha1',
+  '3':'sha256',
+  '4':'sha512',
+}
+
+def help():
+  print("Usage: python app.py filename")
+  print("""
+  Available hash methods
+  [1] MD5
+  [2] SHA1
+  [3] SHA256
+  [4] SHA512
+  """)
+
+
+def file_read(filename):
+  try:      
+    content = open(filename, "r").read()
+    content = content.encode('utf-8')
+    return content
+  except:
+    print("Openning file error")
+    exit(0)
+
+def hash_text(content,method):
+  return hashlib.new(methods[method],content).hexdigest()
+
+
+def write_content(hashed_content):
+  new_file=open('Hased data.txt','w')
+  new_file.write(hashed_content)
+  new_file.close()
+
+
+
+
+if __name__ == "__main__":
+    help()
+    if len(sys.argv) < 2:
+      help()
+      print("No file specified")
+      exit(0)
+    
+    filename = sys.argv[1]
+
+    content = file_read(filename)
+    method=int(input())
+    if(method > 4 or method < 1):
+        print("No method or wrong method specified. Using default md5 hashing method")
+        method = 1
+
+    hashed_content = hash_text(content,str(method))
+
+    write_content(hashed_content)

Hashing file/readme.md

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+Hashing a file is a python script which takes data from a text file and hash it with some algorithms
+
+### Encryption algorithms
+* MD5
+* SHA1
+* SHA256
+* SHA512
+
+
+It will store all the hashed data into a new text file called as **Hased data.txt**

Hashing file/requirements.txt

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+hashlib
+sys