Encryption secures messages so that they can be verified as accurate and protected from interception. Python’s cryptography support includes
hashlib (page 523) for generating signatures of message content using standard algorithms such as MD5 and SHA, and
hmac (page 528) for verifying that a message has not been altered in transmission.
hashlib module defines an API for accessing different cryptographic hashing algorithms. To work with a specific hash algorithm, use the appropriate constructor function or
new() to create a hash object. From there, the objects use the same API, no matter which algorithm is being used.
hashlib is “backed” by OpenSSL, all ...