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crypto: inside-secure - Added AES-CFB support

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This patch adds support for AES in 128 bit cipher feedback mode (AES-CFB).

Signed-off-by: Pascal van Leeuwen <pvanleeuwen@verimatrix.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Pascal van Leeuwen 2019-08-30 09:52:31 +02:00 committed by Herbert Xu
parent 3e450886ec
commit 48e97afa41
3 changed files with 39 additions and 0 deletions
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1
drivers/crypto/inside-secure/safexcel.c
View File

@ -981,6 +981,7 @@ static struct safexcel_alg_template *safexcel_algs[] = {
&safexcel_alg_cbc_des3_ede,
&safexcel_alg_ecb_aes,
&safexcel_alg_cbc_aes,
&safexcel_alg_cfb_aes,
&safexcel_alg_ctr_aes,
&safexcel_alg_md5,
&safexcel_alg_sha1,

2
drivers/crypto/inside-secure/safexcel.h
View File

@ -336,6 +336,7 @@ struct safexcel_context_record {
/* control1 */
#define CONTEXT_CONTROL_CRYPTO_MODE_ECB (0 << 0)
#define CONTEXT_CONTROL_CRYPTO_MODE_CBC (1 << 0)
#define CONTEXT_CONTROL_CRYPTO_MODE_CFB (5 << 0)
#define CONTEXT_CONTROL_CRYPTO_MODE_CTR_LOAD (6 << 0)
#define CONTEXT_CONTROL_CRYPTO_MODE_XTS (7 << 0)
#define CONTEXT_CONTROL_CRYPTO_MODE_XCM ((6 << 0) | BIT(17))
@ -767,6 +768,7 @@ extern struct safexcel_alg_template safexcel_alg_ecb_des3_ede;
extern struct safexcel_alg_template safexcel_alg_cbc_des3_ede;
extern struct safexcel_alg_template safexcel_alg_ecb_aes;
extern struct safexcel_alg_template safexcel_alg_cbc_aes;
extern struct safexcel_alg_template safexcel_alg_cfb_aes;
extern struct safexcel_alg_template safexcel_alg_ctr_aes;
extern struct safexcel_alg_template safexcel_alg_md5;
extern struct safexcel_alg_template safexcel_alg_sha1;

36
drivers/crypto/inside-secure/safexcel_cipher.c
View File

@ -1136,6 +1136,42 @@ struct safexcel_alg_template safexcel_alg_cbc_aes = {
},
};
static int safexcel_skcipher_aes_cfb_cra_init(struct crypto_tfm *tfm)
{
struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
safexcel_skcipher_cra_init(tfm);
ctx->alg = SAFEXCEL_AES;
ctx->mode = CONTEXT_CONTROL_CRYPTO_MODE_CFB;
return 0;
}
struct safexcel_alg_template safexcel_alg_cfb_aes = {
.type = SAFEXCEL_ALG_TYPE_SKCIPHER,
.algo_mask = SAFEXCEL_ALG_AES | SAFEXCEL_ALG_AES_XFB,
.alg.skcipher = {
.setkey = safexcel_skcipher_aes_setkey,
.encrypt = safexcel_encrypt,
.decrypt = safexcel_decrypt,
.min_keysize = AES_MIN_KEY_SIZE,
.max_keysize = AES_MAX_KEY_SIZE,
.ivsize = AES_BLOCK_SIZE,
.base = {
.cra_name = "cfb(aes)",
.cra_driver_name = "safexcel-cfb-aes",
.cra_priority = SAFEXCEL_CRA_PRIORITY,
.cra_flags = CRYPTO_ALG_ASYNC |
CRYPTO_ALG_KERN_DRIVER_ONLY,
.cra_blocksize = 1,
.cra_ctxsize = sizeof(struct safexcel_cipher_ctx),
.cra_alignmask = 0,
.cra_init = safexcel_skcipher_aes_cfb_cra_init,
.cra_exit = safexcel_skcipher_cra_exit,
.cra_module = THIS_MODULE,
},
},
};
static int safexcel_skcipher_aesctr_setkey(struct crypto_skcipher *ctfm,
const u8 *key, unsigned int len)
{