![]() ![]() You can simply substitute the values I previously used for message with the contents of a file. A message M is encrypted by computing C Me mod N. ![]() The pair (N, d) is called the secret key and only the recipient of an encrypted message knows it. To encrypt and decrypt files, you will need to use read and write binary when opening files. N is called the RSA modulus, e is called the encryption exponent, and d is called the decryption exponent. SHA256 (), label = None ) ) # Checking the results > original_message b 'encrypt me!' > message = original_message True Encrypting and Decrypting Files SHA256 (), label = None ) ) > original_message = private_key. read (), backend = default_backend () ) # Encrypting and decrypting > from import hashes > from import padding > message = b 'encrypt me!' > encrypted = public_key. read (), password = None, backend = default_backend () ) > with open ( "public_key.pem", "rb" ) as key_file : public_key = serialization. write ( pem ) # Reading the keys back in (for demonstration purposes) > from import default_backend > from import serialization > with open ( "private_key.pem", "rb" ) as key_file : private_key = serialization. SubjectPublicKeyInfo ) > with open ( 'public_key.pem', 'wb' ) as f : f. NoEncryption () ) > with open ( 'private_key.pem', 'wb' ) as f : f. PKCS8, encryption_algorithm = serialization. private_bytes ( encoding = serialization. public_key () # Storing the keys > from import serialization > pem = private_key. generate_private_key ( public_exponent = 65537, key_size = 2048, backend = default_backend () ) > public_key = private_key. # Generating a key > from import default_backend > from import rsa > private_key = rsa. ![]()
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