Commit 9363efb4 authored by Thara Gopinath's avatar Thara Gopinath Committed by Herbert Xu
Browse files

crypto: qce - Add support for AEAD algorithms 



Introduce support to enable following algorithms in Qualcomm Crypto Engine.

- authenc(hmac(sha1),cbc(des))
- authenc(hmac(sha1),cbc(des3_ede))
- authenc(hmac(sha256),cbc(des))
- authenc(hmac(sha256),cbc(des3_ede))
- authenc(hmac(sha256),cbc(aes))
- ccm(aes)
- rfc4309(ccm(aes))

Signed-off-by: default avatarThara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 7ba9cd4e

drivers/crypto/Kconfig

+15 −0
Original line number Diff line number Diff line
@@ -627,6 +627,12 @@ config CRYPTO_DEV_QCE_SHA 
	select CRYPTO_SHA1

	select CRYPTO_SHA256



config CRYPTO_DEV_QCE_AEAD

	bool

	depends on CRYPTO_DEV_QCE

	select CRYPTO_AUTHENC

	select CRYPTO_LIB_DES



choice

	prompt "Algorithms enabled for QCE acceleration"

	default CRYPTO_DEV_QCE_ENABLE_ALL
@@ -647,6 +653,7 @@ choice 
		bool "All supported algorithms"

		select CRYPTO_DEV_QCE_SKCIPHER

		select CRYPTO_DEV_QCE_SHA

		select CRYPTO_DEV_QCE_AEAD

		help

		  Enable all supported algorithms:

			- AES (CBC, CTR, ECB, XTS)
@@ -672,6 +679,14 @@ choice 
			- SHA1, HMAC-SHA1

			- SHA256, HMAC-SHA256



	config CRYPTO_DEV_QCE_ENABLE_AEAD

		bool "AEAD algorithms only"

		select CRYPTO_DEV_QCE_AEAD

		help

		  Enable AEAD algorithms only:

			- authenc()

			- ccm(aes)

			- rfc4309(ccm(aes))

endchoice



config CRYPTO_DEV_QCE_SW_MAX_LEN

drivers/crypto/qce/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -6,3 +6,4 @@ qcrypto-objs := core.o \ 


qcrypto-$(CONFIG_CRYPTO_DEV_QCE_SHA) += sha.o

qcrypto-$(CONFIG_CRYPTO_DEV_QCE_SKCIPHER) += skcipher.o

qcrypto-$(CONFIG_CRYPTO_DEV_QCE_AEAD) += aead.o

drivers/crypto/qce/aead.c

0 → 100644
+799 −0

File added.

Preview size limit exceeded, changes collapsed.

drivers/crypto/qce/aead.h

0 → 100644
+53 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * Copyright (c) 2021, Linaro Limited. All rights reserved.

 */



#ifndef _AEAD_H_

#define _AEAD_H_



#include "common.h"

#include "core.h"



#define QCE_MAX_KEY_SIZE		64

#define QCE_CCM4309_SALT_SIZE		3



struct qce_aead_ctx {

	u8 enc_key[QCE_MAX_KEY_SIZE];

	u8 auth_key[QCE_MAX_KEY_SIZE];

	u8 ccm4309_salt[QCE_CCM4309_SALT_SIZE];

	unsigned int enc_keylen;

	unsigned int auth_keylen;

	unsigned int authsize;

};



struct qce_aead_reqctx {

	unsigned long flags;

	u8 *iv;

	unsigned int ivsize;

	int src_nents;

	int dst_nents;

	struct scatterlist result_sg;

	struct scatterlist adata_sg;

	struct sg_table dst_tbl;

	struct sg_table src_tbl;

	struct scatterlist *dst_sg;

	struct scatterlist *src_sg;

	unsigned int cryptlen;

	unsigned int assoclen;

	unsigned char *adata;

	u8 ccm_nonce[QCE_MAX_NONCE];

	u8 ccmresult_buf[QCE_BAM_BURST_SIZE];

	u8 ccm_rfc4309_iv[QCE_MAX_IV_SIZE];

};



static inline struct qce_alg_template *to_aead_tmpl(struct crypto_aead *tfm)

{

	struct aead_alg *alg = crypto_aead_alg(tfm);



	return container_of(alg, struct qce_alg_template, alg.aead);

}



extern const struct qce_algo_ops aead_ops;



#endif /* _AEAD_H_ */

drivers/crypto/qce/common.h

+2 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ 
#include <crypto/aes.h>

#include <crypto/hash.h>

#include <crypto/internal/skcipher.h>

#include <crypto/internal/aead.h>



/* xts du size */

#define QCE_SECTOR_SIZE			512
@@ -88,6 +89,7 @@ struct qce_alg_template { 
	union {

		struct skcipher_alg skcipher;

		struct ahash_alg ahash;

		struct aead_alg aead;

	} alg;

	struct qce_device *qce;

	const u8 *hash_zero;