diff options
Diffstat (limited to 'drivers/crypto/ti/dthev2-common.h')
| -rw-r--r-- | drivers/crypto/ti/dthev2-common.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/crypto/ti/dthev2-common.h b/drivers/crypto/ti/dthev2-common.h index 68c94acda8aa..c7a06a4c353f 100644 --- a/drivers/crypto/ti/dthev2-common.h +++ b/drivers/crypto/ti/dthev2-common.h @@ -27,10 +27,16 @@ #define DTHE_REG_SIZE 4 #define DTHE_DMA_TIMEOUT_MS 2000 +/* + * Size of largest possible key (of all algorithms) to be stored in dthe_tfm_ctx + * This is currently the keysize of XTS-AES-256 which is 512 bits (64 bytes) + */ +#define DTHE_MAX_KEYSIZE (AES_MAX_KEY_SIZE * 2) enum dthe_aes_mode { DTHE_AES_ECB = 0, DTHE_AES_CBC, + DTHE_AES_XTS, }; /* Driver specific struct definitions */ @@ -73,12 +79,14 @@ struct dthe_list { * @keylen: AES key length * @key: AES key * @aes_mode: AES mode + * @skcipher_fb: Fallback crypto skcipher handle for AES-XTS mode */ struct dthe_tfm_ctx { struct dthe_data *dev_data; unsigned int keylen; - u32 key[AES_KEYSIZE_256 / sizeof(u32)]; + u32 key[DTHE_MAX_KEYSIZE / sizeof(u32)]; enum dthe_aes_mode aes_mode; + struct crypto_sync_skcipher *skcipher_fb; }; /** |