Warning
Use :doc:`oaep` instead. This module is provided only for legacy purposes.
See RFC8017 or the original RSA Labs specification .
This scheme is more properly called RSAES-PKCS1-v1_5.
As an example, a sender may encrypt a secret AES key in this way:
>>> from Crypto.Cipher import PKCS1_v1_5
>>> from Crypto.PublicKey import RSA
>>> from Crypto.Random import get_random_bytes
>>>
>>> aes_key = get_random_bytes(16)
>>>
>>> rsa_key = RSA.importKey(open('pubkey.der').read())
>>> cipher = PKCS1_v1_5.new(rsa_key)
>>> ciphertext = cipher.encrypt(aes_key)
At the receiver side, decryption can be done using the private part of the RSA key:
>>> from Crypto.Random import get_random_bytes
>>>
>>> rsa_key = RSA.importKey(open('privkey.der').read())
>>>
>>> sentinel = get_random_bytes(16)
>>>
>>> cipher = PKCS1_v1_5.new(rsa_key)
>>> aes_key = cipher.decrypt(ciphertext, sentinel, expected_pt_len=16)
>>>
>>> # The AES key is the random sentinel in case of error
.. automodule:: Crypto.Cipher.PKCS1_v1_5
:members: