From: Ard Biesheuvel <ardb@xxxxxxxxxx> 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@xxxxxxxxxx> Reviewed-by: Tero Kristo <t-kristo@xxxxxx> Tested-by: Tero Kristo <t-kristo@xxxxxx> --- drivers/crypto/omap-aes-gcm.c | 11 +++++++++++ drivers/crypto/omap-aes.c | 2 ++ drivers/crypto/omap-aes.h | 3 +++ 3 files changed, 16 insertions(+) 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); -- 2.17.1 -- Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki