PKCS#7: Allow detached data to be supplied for signature checking purposes

	return enopkg;

}

EXPORT_SYMBOL_GPL(pkcs7_verify);

/**

 * pkcs7_supply_detached_data - Supply the data needed to verify a PKCS#7 message

 * @pkcs7: The PKCS#7 message

 * @data: The data to be verified

 * @datalen: The amount of data

 *

 * Supply the detached data needed to verify a PKCS#7 message.  Note that no

 * attempt to retain/pin the data is made.  That is left to the caller.  The

 * data will not be modified by pkcs7_verify() and will not be freed when the

 * PKCS#7 message is freed.

 *

 * Returns -EINVAL if data is already supplied in the message, 0 otherwise.

 */

int pkcs7_supply_detached_data(struct pkcs7_message *pkcs7,

			       const void *data, size_t datalen)

{

	if (pkcs7->data) {

		pr_debug("Data already supplied\n");

		return -EINVAL;

	}

	pkcs7->data = data;

	pkcs7->data_len = datalen;

	return 0;

}

 * pkcs7_verify.c

 */

extern int pkcs7_verify(struct pkcs7_message *pkcs7);

extern int pkcs7_supply_detached_data(struct pkcs7_message *pkcs7,

				      const void *data, size_t datalen);