This patch adds support for SM4 in CFB mode, i.e. skcipher cfb(sm4).
changes since v1:
- nothing
Signed-off-by: Pascal van Leeuwen <pvanleeuwen@xxxxxxxxxxxxxx>
---
drivers/crypto/inside-secure/safexcel.c | 1 +
drivers/crypto/inside-secure/safexcel.h | 1 +
drivers/crypto/inside-secure/safexcel_cipher.c | 36 ++++++++++++++++++++++++++
3 files changed, 38 insertions(+)
diff --git a/drivers/crypto/inside-secure/safexcel.c b/drivers/crypto/inside-secure/safexcel.c
index fbfda68..1679b41 100644
--- a/drivers/crypto/inside-secure/safexcel.c
+++ b/drivers/crypto/inside-secure/safexcel.c
@@ -1181,6 +1181,7 @@ static int safexcel_request_ring_irq(void *pdev, int irqid,
&safexcel_alg_ecb_sm4,
&safexcel_alg_cbc_sm4,
&safexcel_alg_ofb_sm4,
+ &safexcel_alg_cfb_sm4,
};
static int safexcel_register_algorithms(struct safexcel_crypto_priv *priv)
diff --git a/drivers/crypto/inside-secure/safexcel.h b/drivers/crypto/inside-secure/safexcel.h
index 8e01d24..db9bc80 100644
--- a/drivers/crypto/inside-secure/safexcel.h
+++ b/drivers/crypto/inside-secure/safexcel.h
@@ -876,5 +876,6 @@ int safexcel_hmac_setkey(const char *alg, const u8 *key, unsigned int keylen,
extern struct safexcel_alg_template safexcel_alg_ecb_sm4;
extern struct safexcel_alg_template safexcel_alg_cbc_sm4;
extern struct safexcel_alg_template safexcel_alg_ofb_sm4;
+extern struct safexcel_alg_template safexcel_alg_cfb_sm4;
#endif
diff --git a/drivers/crypto/inside-secure/safexcel_cipher.c b/drivers/crypto/inside-secure/safexcel_cipher.c
index 95f9214..1d8aca2 100644
--- a/drivers/crypto/inside-secure/safexcel_cipher.c
+++ b/drivers/crypto/inside-secure/safexcel_cipher.c
@@ -2792,3 +2792,39 @@ struct safexcel_alg_template safexcel_alg_ofb_sm4 = {
},
},
};
+
+static int safexcel_skcipher_sm4_cfb_cra_init(struct crypto_tfm *tfm)
+{
+ struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ safexcel_skcipher_cra_init(tfm);
+ ctx->alg = SAFEXCEL_SM4;
+ ctx->mode = CONTEXT_CONTROL_CRYPTO_MODE_CFB;
+ return 0;
+}
+
+struct safexcel_alg_template safexcel_alg_cfb_sm4 = {
+ .type = SAFEXCEL_ALG_TYPE_SKCIPHER,
+ .algo_mask = SAFEXCEL_ALG_SM4 | SAFEXCEL_ALG_AES_XFB,
+ .alg.skcipher = {
+ .setkey = safexcel_skcipher_sm4_setkey,
+ .encrypt = safexcel_encrypt,
+ .decrypt = safexcel_decrypt,
+ .min_keysize = SM4_KEY_SIZE,
+ .max_keysize = SM4_KEY_SIZE,
+ .ivsize = SM4_BLOCK_SIZE,
+ .base = {
+ .cra_name = "cfb(sm4)",
+ .cra_driver_name = "safexcel-cfb-sm4",
+ .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_sm4_cfb_cra_init,
+ .cra_exit = safexcel_skcipher_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
--
1.8.3.1
