Key = hashlib.pbkdf2_hmac('sha256', password, salt, iterationCount)Įncrypter = pyaes.Encrypter(pyaes.AESModeOfOperationCBC(key, iv))Ĭiphertext = encrypter.feed(plaintext.encode('utf8'))ĭecrypter = pyaes.Decrypter(pyaes.AESModeOfOperationCBC(key, iv))ĭecryptedData = decrypter.feed(ciphertext) Plaintext = 'The quick brown fox jumps over the lazy dog' The following code snippet uses PBKDF2 to generate a 32 bytes key, which is applied to encrypt the plaintext and decrypt the resulting ciphertext using AES-256-CBC: from base64 import b64encode For decryption pyaes.Decrypter is required. In the posted code, encryption and decryption are confused. Passcode = hashlib.pbkdf2_hmac('sha256', PASSWORD, SALT, 1000)Īes = pyaes.AESModeOfOperationCBC(passcode, iv=iv)Įncrypter = pyaes.Encrypter(pyaes.AESModeOfOperationCBC(passcode, iv)) How would I go about that using Python? What are the best libraries for this?īelow is one of my many attempts (edited based on comment): from base64 import b64decode The encrypted payload is then signed with an HMAC key." The session key is encrypted "using the AES-256-CBC cipher with a passcode built using PBKDF2 - Password-Based Key Derivation Function 2. The string I need to decode is base64 encoded and when decoded it's a pipe delineated key and expiry date (session key + pipe delimiter + date time) I've been provided with the passphrase, salt and hmac key. I have an encrypted session key I need to decrypt using python and really have no idea how to go about that.
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