Add hashing password

projects/hashing passwords/README.md

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+# hashing passwords
+## Execute
+`python hashing_passwords.py <password> [-t {sha256,sha512,md5}] `  
+*※Default hash-type is sha256*
+
+## Example
+```
+$ python hashing_passwords.py nakao
+< hash-type : sha256 >
+63201414e0804bdc63b662bd87f0f51616ab69bd672aefe2b17fcec1ef14a995
+```
+
+```
+$ python hashing_passwords.py nakao -t sha512
+< hash-type : sha512 >
+9cae3a2096c33b6049502ac923baff9649478df62eb090bac30d5c684b2f724ecaf7c3d7744ebccb49118d2ab07d615b02a7d170fd6310f815da18e09863841a
+```

projects/hashing passwords/hashing_passwords.py

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+# -*- cofing: utf-8 -*-
+import argparse
+import hashlib
+
+# parsing
+parser = argparse.ArgumentParser(description='hashing given password')
+parser.add_argument('password', help='input password you want to hash')
+parser.add_argument('-t', '--type', default='sha256',choices=['sha256', 'sha512', 'md5'] )
+args = parser.parse_args() 
+
+# hashing given password
+password = args.password
+hashtype = args.type
+m = getattr(hashlib,hashtype)()
+m.update(password.encode())
+
+# output
+print("< hash-type : " + hashtype + " >")
+print(m.hexdigest())