def download_photo_id_image(self): """ Download the associated id image from storage """ if not settings.VERIFY_STUDENT["SOFTWARE_SECURE"].get( "RSA_PRIVATE_KEY", None): return None path = self._get_path("photo_id") byte_img_data = self._get_image_from_storage(path) try: # decode rsa encrypted aes key from base64 rsa_encrypted_aes_key = base64.urlsafe_b64decode( self.photo_id_key.encode('utf-8')) # decrypt aes key using rsa private key rsa_private_key_str = settings.VERIFY_STUDENT["SOFTWARE_SECURE"][ "RSA_PRIVATE_KEY"] decrypted_aes_key = rsa_decrypt(rsa_encrypted_aes_key, rsa_private_key_str) img_bytes = decode_and_decrypt(byte_img_data, decrypted_aes_key) return img_bytes except Exception as e: # pylint: disable=broad-except log.exception( 'Failed to decrypt photo id image due to an exception: %s', e) return None
def _assert_rsa(data, public_key, private_key): """ Assert that the original provided data is retrieved after RSA encryption and decryption using the given keys. """ encrypted_data = rsa_encrypt(data, public_key) assert rsa_decrypt(encrypted_data, private_key) == data # Even though our test data is only 32 bytes, RSA encryption will make it 256 # bytes, and base64 encoding will blow that up to 344 assert len(base64.urlsafe_b64encode(encrypted_data)) == 344
def _assert_rsa(data, public_key, private_key): """ Assert that the original provided data is retrieved after RSA encryption and decryption using the given keys. """ encrypted_data = rsa_encrypt(data, public_key) assert rsa_decrypt(encrypted_data, private_key) == data # Even though our test data is only 32 bytes, RSA encryption will make it 256 # bytes, and base64 encoding will blow that up to 344 assert len(base64.urlsafe_b64encode(encrypted_data)) == 344
def photo_id_image(self, obj): """ show photo id image """ try: rsa_private_key = settings.VERIFY_STUDENT["SOFTWARE_SECURE"][ "RSA_PRIVATE_KEY"] aes_key = rsa_decrypt(obj.photo_id_key.decode('base64'), rsa_private_key) file_name = self._get_path(obj, 'photo_id') return self.get_image(file_name, aes_key) except Exception, e: log.exception(e)
def test_rsa(): # Make up some garbage keys for testing purposes. pub_key_str = """-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1hLVjP0oV0Uy/+jQ+Upz c+eYc4Pyflb/WpfgYATggkoQdnsdplmvPtQr85+utgqKPxOh+PvYGW8QNUzjLIu4 5/GlmvBa82i1jRMgEAxGI95bz7j9DtH+7mnj+06zR5xHwT49jK0zMs5MjMaz5WRq BUNkz7dxWzDrYJZQx230sPp6upy1Y5H5O8SnJVdghsh8sNciS4Bo4ZONQ3giBwxz h5svjspz1MIsOoShjbAdfG+4VX7sVwYlw2rnQeRsMH5/xpnNeqtScyOMoz0N9UDG dtRMNGa2MihAg7zh7/zckbUrtf+o5wQtlCJL1Kdj4EjshqYvCxzWnSM+MaYAjb3M EQIDAQAB -----END PUBLIC KEY-----""" priv_key_str = """-----BEGIN RSA PRIVATE KEY----- MIIEpAIBAAKCAQEA1hLVjP0oV0Uy/+jQ+Upzc+eYc4Pyflb/WpfgYATggkoQdnsd plmvPtQr85+utgqKPxOh+PvYGW8QNUzjLIu45/GlmvBa82i1jRMgEAxGI95bz7j9 DtH+7mnj+06zR5xHwT49jK0zMs5MjMaz5WRqBUNkz7dxWzDrYJZQx230sPp6upy1 Y5H5O8SnJVdghsh8sNciS4Bo4ZONQ3giBwxzh5svjspz1MIsOoShjbAdfG+4VX7s VwYlw2rnQeRsMH5/xpnNeqtScyOMoz0N9UDGdtRMNGa2MihAg7zh7/zckbUrtf+o 5wQtlCJL1Kdj4EjshqYvCxzWnSM+MaYAjb3MEQIDAQABAoIBAQCviuA87fdfoOoS OerrEacc20QDLaby/QoGUtZ2RmmHzY40af7FQ3PWFIw6Ca5trrTwxnuivXnWWWG0 I2mCRM0Kvfgr1n7ubOW7WnyHTFlT3mnxK2Ov/HmNLZ36nO2cgkXA6/Xy3rBGMC9L nUE1kSLzT/Fh965ntfS9zmVNNBhb6no0rVkGx5nK3vTI6kUmaa0m+E7KL/HweO4c JodhN8CX4gpxSrkuwJ7IHEPYspqc0jInMYKLmD3d2g3BiOctjzFmaj3lV5AUlujW z7/LVe5WAEaaxjwaMvwqrJLv9ogxWU3etJf22+Yy7r5gbPtqpqJrCZ5+WpGnUHws 3mMGP2QBAoGBAOc3pzLFgGUREVPSFQlJ06QFtfKYqg9fFHJCgWu/2B2aVZc2aO/t Zhuoz+AgOdzsw+CWv7K0FH9sUkffk2VKPzwwwufLK3avD9gI0bhmBAYvdhS6A3nO YM3W+lvmaJtFL00K6kdd+CzgRnBS9cZ70WbcbtqjdXI6+mV1WdGUTLhBAoGBAO0E xhD4z+GjubSgfHYEZPgRJPqyUIfDH+5UmFGpr6zlvNN/depaGxsbhW8t/V6xkxsG MCgic7GLMihEiUMx1+/snVs5bBUx7OT9API0d+vStHCFlTTe6aTdmiduFD4PbDsq 6E4DElVRqZhpIYusdDh7Z3fO2hm5ad4FfMlx65/RAoGAPYEfV7ETs06z9kEG2X6q 7pGaUZrsecRH8xDfzmKswUshg2S0y0WyCJ+CFFNeMPdGL4LKIWYnobGVvYqqcaIr af5qijAQMrTkmQnXh56TaXXMijzk2czdEUQjOrjykIL5zxudMDi94GoUMqLOv+qF zD/MuRoMDsPDgaOSrd4t/kECgYEAzwBNT8NOIz3P0Z4cNSJPYIvwpPaY+IkE2SyO vzuYj0Mx7/Ew9ZTueXVGyzv6PfqOhJqZ8mNscZIlIyAAVWwxsHwRTfvPlo882xzP 97i1R4OFTYSNNFi+69sSZ/9utGjZ2K73pjJuj487tD2VK5xZAH9edTd2KeNSP7LB MlpJNBECgYAmIswPdldm+G8SJd5j9O2fcDVTURjKAoSXCv2j4gEZzzfudpLWNHYu l8N6+LEIVTMAytPk+/bImHvGHKZkCz5rEMSuYJWOmqKI92rUtI6fz5DUb3XSbrwT 3W+sdGFUK3GH1NAX71VxbAlFVLUetcMwai1+wXmGkRw6A7YezVFnhw== -----END RSA PRIVATE KEY-----""" aes_key_str = "32fe72aaf2abb44de9e161131b5435c8d37cbdb6f5df242ae860b283115f2dae" aes_key = aes_key_str.decode('hex') encrypted_aes_key = rsa_encrypt(aes_key, pub_key_str) assert_equals(aes_key, rsa_decrypt(encrypted_aes_key, priv_key_str)) # Even though our AES key is only 32 bytes, RSA encryption will make it 256 # bytes, and base64 encoding will blow that up to 344 assert_equals(len(base64.urlsafe_b64encode(encrypted_aes_key)), 344)
def test_rsa(): # Make up some garbage keys for testing purposes. pub_key_str = """-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1hLVjP0oV0Uy/+jQ+Upz c+eYc4Pyflb/WpfgYATggkoQdnsdplmvPtQr85+utgqKPxOh+PvYGW8QNUzjLIu4 5/GlmvBa82i1jRMgEAxGI95bz7j9DtH+7mnj+06zR5xHwT49jK0zMs5MjMaz5WRq BUNkz7dxWzDrYJZQx230sPp6upy1Y5H5O8SnJVdghsh8sNciS4Bo4ZONQ3giBwxz h5svjspz1MIsOoShjbAdfG+4VX7sVwYlw2rnQeRsMH5/xpnNeqtScyOMoz0N9UDG dtRMNGa2MihAg7zh7/zckbUrtf+o5wQtlCJL1Kdj4EjshqYvCxzWnSM+MaYAjb3M EQIDAQAB -----END PUBLIC KEY-----""" priv_key_str = """-----BEGIN RSA PRIVATE KEY----- MIIEpAIBAAKCAQEA1hLVjP0oV0Uy/+jQ+Upzc+eYc4Pyflb/WpfgYATggkoQdnsd plmvPtQr85+utgqKPxOh+PvYGW8QNUzjLIu45/GlmvBa82i1jRMgEAxGI95bz7j9 DtH+7mnj+06zR5xHwT49jK0zMs5MjMaz5WRqBUNkz7dxWzDrYJZQx230sPp6upy1 Y5H5O8SnJVdghsh8sNciS4Bo4ZONQ3giBwxzh5svjspz1MIsOoShjbAdfG+4VX7s VwYlw2rnQeRsMH5/xpnNeqtScyOMoz0N9UDGdtRMNGa2MihAg7zh7/zckbUrtf+o 5wQtlCJL1Kdj4EjshqYvCxzWnSM+MaYAjb3MEQIDAQABAoIBAQCviuA87fdfoOoS OerrEacc20QDLaby/QoGUtZ2RmmHzY40af7FQ3PWFIw6Ca5trrTwxnuivXnWWWG0 I2mCRM0Kvfgr1n7ubOW7WnyHTFlT3mnxK2Ov/HmNLZ36nO2cgkXA6/Xy3rBGMC9L nUE1kSLzT/Fh965ntfS9zmVNNBhb6no0rVkGx5nK3vTI6kUmaa0m+E7KL/HweO4c JodhN8CX4gpxSrkuwJ7IHEPYspqc0jInMYKLmD3d2g3BiOctjzFmaj3lV5AUlujW z7/LVe5WAEaaxjwaMvwqrJLv9ogxWU3etJf22+Yy7r5gbPtqpqJrCZ5+WpGnUHws 3mMGP2QBAoGBAOc3pzLFgGUREVPSFQlJ06QFtfKYqg9fFHJCgWu/2B2aVZc2aO/t Zhuoz+AgOdzsw+CWv7K0FH9sUkffk2VKPzwwwufLK3avD9gI0bhmBAYvdhS6A3nO YM3W+lvmaJtFL00K6kdd+CzgRnBS9cZ70WbcbtqjdXI6+mV1WdGUTLhBAoGBAO0E xhD4z+GjubSgfHYEZPgRJPqyUIfDH+5UmFGpr6zlvNN/depaGxsbhW8t/V6xkxsG MCgic7GLMihEiUMx1+/snVs5bBUx7OT9API0d+vStHCFlTTe6aTdmiduFD4PbDsq 6E4DElVRqZhpIYusdDh7Z3fO2hm5ad4FfMlx65/RAoGAPYEfV7ETs06z9kEG2X6q 7pGaUZrsecRH8xDfzmKswUshg2S0y0WyCJ+CFFNeMPdGL4LKIWYnobGVvYqqcaIr af5qijAQMrTkmQnXh56TaXXMijzk2czdEUQjOrjykIL5zxudMDi94GoUMqLOv+qF zD/MuRoMDsPDgaOSrd4t/kECgYEAzwBNT8NOIz3P0Z4cNSJPYIvwpPaY+IkE2SyO vzuYj0Mx7/Ew9ZTueXVGyzv6PfqOhJqZ8mNscZIlIyAAVWwxsHwRTfvPlo882xzP 97i1R4OFTYSNNFi+69sSZ/9utGjZ2K73pjJuj487tD2VK5xZAH9edTd2KeNSP7LB MlpJNBECgYAmIswPdldm+G8SJd5j9O2fcDVTURjKAoSXCv2j4gEZzzfudpLWNHYu l8N6+LEIVTMAytPk+/bImHvGHKZkCz5rEMSuYJWOmqKI92rUtI6fz5DUb3XSbrwT 3W+sdGFUK3GH1NAX71VxbAlFVLUetcMwai1+wXmGkRw6A7YezVFnhw== -----END RSA PRIVATE KEY-----""" aes_key_str = "32fe72aaf2abb44de9e161131b5435c8d37cbdb6f5df242ae860b283115f2dae" aes_key = aes_key_str.decode('hex') encrypted_aes_key = rsa_encrypt(aes_key, pub_key_str) assert_equals(aes_key, rsa_decrypt(encrypted_aes_key, priv_key_str)) # Even though our AES key is only 32 bytes, RSA encryption will make it 256 # bytes, and base64 encoding will blow that up to 344 assert_equals(len(base64.urlsafe_b64encode(encrypted_aes_key)), 344)