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authorPascal van Leeuwen <pascalvanl@gmail.com>2019-08-30 10:52:32 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2019-09-05 07:37:29 +0300
commit50485dfb6c60f63e1a42943a910c0ab670c92a25 (patch)
tree3c8749a88e7ed14afb6417bad429a7f932e61833 /drivers/crypto/inside-secure/safexcel_cipher.c
parent48e97afa41784c4b94e01f8605179bd49e759d03 (diff)
downloadlinux-50485dfb6c60f63e1a42943a910c0ab670c92a25.tar.xz
crypto: inside-secure - Added AES-OFB support
This patch adds support for AES in output feedback mode (AES-OFB). Signed-off-by: Pascal van Leeuwen <pvanleeuwen@verimatrix.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/inside-secure/safexcel_cipher.c')
-rw-r--r--drivers/crypto/inside-secure/safexcel_cipher.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/crypto/inside-secure/safexcel_cipher.c b/drivers/crypto/inside-secure/safexcel_cipher.c
index 4e06c61f9ff9..7a1e78518871 100644
--- a/drivers/crypto/inside-secure/safexcel_cipher.c
+++ b/drivers/crypto/inside-secure/safexcel_cipher.c
@@ -1172,6 +1172,42 @@ struct safexcel_alg_template safexcel_alg_cfb_aes = {
},
};
+static int safexcel_skcipher_aes_ofb_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_OFB;
+ return 0;
+}
+
+struct safexcel_alg_template safexcel_alg_ofb_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 = "ofb(aes)",
+ .cra_driver_name = "safexcel-ofb-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_ofb_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)
{