069 hmac module

hmac module

• hmac module: password encryption, you can add salt

  To prevent password knocked library, we can use python in another hmac module, it created internally and content key to encrypt and then we had some sort of deal.

  If you want to ensure that the final result hmac module consistent, must ensure that:

  1. Hmac.new within parentheses as specified initial key
  2. No matter how many times the update, check the contents together to accumulate the same content

  import hmac
  
  # 注意hmac模块只接受二进制数据的加密
  h1 = hmac.new(b'hash')
  h1.update(b'hello')
  h1.update(b'world')
  print(h1.hexdigest())
  
  # 905f549c5722b5850d602862c34a763e

  h2 = hmac.new(b'hash')
  h2.update(b'helloworld')
  print(h2.hexdigest())
  
  # 905f549c5722b5850d602862c34a763e

  h3 = hmac.new(b'hashhelloworld')
  print(h3.hexdigest())
  
  # a7e524ade8ac5f7f33f3a39a8f63fd25