9 #include <crypto/hmac.h>
30 /* Flag marking a HMAC request. */
32 /* Flag set when HW HMAC is being used. */
34 /* Flag set when SW HMAC is being used. */
40  * @key:	 The key (used only for HMAC transformations).
43  * @is_hmac_tfm: Whether or not this is a HMAC transformation.
62  * @buffer:	    Buffer to store: partial block of data and SW HMAC
81 	 * Buffer is double the block size because we need space for SW HMAC
398 	 * Prepare IPAD for HMAC. Only done for first block.  in prepare_ipad()
399 	 * HMAC(k,m) = H(k ^ opad || H(k ^ ipad || m))  in prepare_ipad()
402 	 * Only needed if not using HW HMAC.  in prepare_ipad()
428 	 * If hardware HMAC flag is set, perform HMAC in hardware.  in kmb_ocs_hcu_do_one_request()
520 	 * If we are finalizing a SW HMAC request, we just computed the result  in kmb_ocs_hcu_do_one_request()
523 	 * We now need to complete the HMAC calculation with the OPAD step,  in kmb_ocs_hcu_do_one_request()
541 		/* Now hash the buffer to obtain the final HMAC. */  in kmb_ocs_hcu_do_one_request()
608 	/* If this a HMAC request, set HMAC flag. */  in kmb_ocs_hcu_init()
628 	 * If we are doing HMAC, then we must use SW-assisted HMAC, since HW  in kmb_ocs_hcu_update()
629 	 * HMAC does not support context switching (there it can only be used  in kmb_ocs_hcu_update()
661 	 * If this is a HMAC request and, so far, we didn't have to switch to  in kmb_ocs_hcu_fin_common()
662 	 * SW HMAC, check if we can use HW HMAC.  in kmb_ocs_hcu_fin_common()
668 		 * so we can use HW HMAC, but only if there is some data to  in kmb_ocs_hcu_fin_common()
671 		 * (OCS HCU HW only supports length <= 64); if HW HMAC cannot  in kmb_ocs_hcu_fin_common()
672 		 * be used, fall back to SW-assisted HMAC.  in kmb_ocs_hcu_fin_common()
763 	 *   later on); this is to maximize the use of HW HMAC (which works  in kmb_ocs_hcu_setkey()
921 			.cra_name		= "hmac(sha224)",
922 			.cra_driver_name	= "hmac-sha224-keembay-ocs",
974 			.cra_name		= "hmac(sha256)",
975 			.cra_driver_name	= "hmac-sha256-keembay-ocs",
1026 			.cra_name		= "hmac(sm3)",
1027 			.cra_driver_name	= "hmac-sm3-keembay-ocs",
1078 			.cra_name		= "hmac(sha384)",
1079 			.cra_driver_name	= "hmac-sha384-keembay-ocs",
1130 			.cra_name		= "hmac(sha512)",
1131 			.cra_driver_name	= "hmac-sha512-keembay-ocs",