Hash module Hashlib and HMAC

Hashlib Module

1. For cryptographic related operations, instead of the MD5 module and the SHA module, mainly provides the SHA1,SHA224,SSHA256,SHA384,SHA512,MD5 algorithm
2. Look directly at the code case:

---------MD5-----------

hash = Hashlib.md5 ()  hash.update (bytes ('admin', encoding='  Utf-8'  )print(hash.hexdigest ())  print( Hash.digest ())  

----------SHA1---------

hash = HASHLIB.SHA1 ()  hash.update (bytes ('admin', encoding='  Utf-8'))  print(Hash.hexdigest ())  

----------sha256-------

hash = hashlib.sha256 ()  hash.update (bytes ('admin', encoding= ' Utf-8 ' ) )  print(Hash.hexdigest ())

---------sha384--------

hash = hashlib.sha384 ()  hash.update (bytes ("admin", encoding=' Utf-8 ' ) )  print(Hash.hexdigest ())  

------------sha512--------

hash = hashlib.sha512 ()  hash.update (bytes ('admin', encoding= ' Utf-8 ' ) )  print(Hash.hexdigest ())  

Attention

Although the above encryption algorithm is very powerful, but sometimes there is a flaw, namely: through the pool can be reversed.

Therefore, it is necessary to add a custom key to the encryption algorithm to encrypt

hash = hashlib.md5 (bytes ('790dfhdfe3', encoding='Utf-8')) hash.update (bytes ('Admin', encoding='Utf-8'))  Print(Hash.hexdigest ())-------------------------------Python also has an HMAC module, which internally creates key and content for further processing and then encrypts it.ImportHMAC H= Hmac.new (Bytes ('DFEW3', encoding="Utf-8")) h.update (bytes ('Admin', encoding="Utf-8"))  Print(H.hexdigest ())

Hash module Hashlib and HMAC