diff mbox series

[PATCHv2,14/22] crypto: omap-aes-gcm - add missing .setauthsize hooks

Message ID 20191105140111.20285-15-t-kristo@ti.com
State New
Headers show
Series crypto: omap-sham: fixes towards 5.5 | expand

Commit Message

Tero Kristo Nov. 5, 2019, 2:01 p.m. UTC 
From: Ard Biesheuvel <ardb@kernel.org>


GCM only permits certain tag lengths, so populate the .setauthsize
hooks which ensure that only permitted sizes are accepted by the
implementation.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>

Reviewed-by: Tero Kristo <t-kristo@ti.com>

Tested-by: Tero Kristo <t-kristo@ti.com>

---
 drivers/crypto/omap-aes-gcm.c | 11 +++++++++++
 drivers/crypto/omap-aes.c     |  2 ++
 drivers/crypto/omap-aes.h     |  3 +++
 3 files changed, 16 insertions(+)

-- 
2.17.1

--
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
diff mbox series

Patch

diff --git a/drivers/crypto/omap-aes-gcm.c b/drivers/crypto/omap-aes-gcm.c
index 05d2fe78b105..70398fbd669d 100644
--- a/drivers/crypto/omap-aes-gcm.c
+++ b/drivers/crypto/omap-aes-gcm.c
@@ -413,3 +413,14 @@  int omap_aes_4106gcm_setkey(struct crypto_aead *tfm, const u8 *key,
 
 	return 0;
 }
+
+int omap_aes_gcm_setauthsize(struct crypto_aead *tfm, unsigned int authsize)
+{
+	return crypto_gcm_check_authsize(authsize);
+}
+
+int omap_aes_4106gcm_setauthsize(struct crypto_aead *parent,
+				 unsigned int authsize)
+{
+	return crypto_rfc4106_check_authsize(authsize);
+}
diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c
index 33cba7a2d6df..161af3bf667c 100644
--- a/drivers/crypto/omap-aes.c
+++ b/drivers/crypto/omap-aes.c
@@ -787,6 +787,7 @@  static struct aead_alg algs_aead_gcm[] = {
 	.ivsize		= GCM_AES_IV_SIZE,
 	.maxauthsize	= AES_BLOCK_SIZE,
 	.setkey		= omap_aes_gcm_setkey,
+	.setauthsize	= omap_aes_gcm_setauthsize,
 	.encrypt	= omap_aes_gcm_encrypt,
 	.decrypt	= omap_aes_gcm_decrypt,
 },
@@ -807,6 +808,7 @@  static struct aead_alg algs_aead_gcm[] = {
 	.maxauthsize	= AES_BLOCK_SIZE,
 	.ivsize		= GCM_RFC4106_IV_SIZE,
 	.setkey		= omap_aes_4106gcm_setkey,
+	.setauthsize	= omap_aes_4106gcm_setauthsize,
 	.encrypt	= omap_aes_4106gcm_encrypt,
 	.decrypt	= omap_aes_4106gcm_decrypt,
 },
diff --git a/drivers/crypto/omap-aes.h b/drivers/crypto/omap-aes.h
index 2d3575231e31..1bcca7957e92 100644
--- a/drivers/crypto/omap-aes.h
+++ b/drivers/crypto/omap-aes.h
@@ -202,8 +202,11 @@  int omap_aes_4106gcm_setkey(struct crypto_aead *tfm, const u8 *key,
 			    unsigned int keylen);
 int omap_aes_gcm_encrypt(struct aead_request *req);
 int omap_aes_gcm_decrypt(struct aead_request *req);
+int omap_aes_gcm_setauthsize(struct crypto_aead *tfm, unsigned int authsize);
 int omap_aes_4106gcm_encrypt(struct aead_request *req);
 int omap_aes_4106gcm_decrypt(struct aead_request *req);
+int omap_aes_4106gcm_setauthsize(struct crypto_aead *parent,
+				 unsigned int authsize);
 int omap_aes_write_ctrl(struct omap_aes_dev *dd);
 int omap_aes_crypt_dma_start(struct omap_aes_dev *dd);
 int omap_aes_crypt_dma_stop(struct omap_aes_dev *dd);