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authorPascal van Leeuwen <pascalvanl@gmail.com>2019-09-13 11:10:38 +0200
committerHerbert Xu <herbert@gondor.apana.org.au>2019-10-05 01:06:04 +1000
commit03a6cfb97f8f28373a6fed68deefccb5e98e1072 (patch)
tree9ca4886d1d370f12847a582086fc811bd22c8803 /drivers/crypto/inside-secure
parent6f2d14288ec1d659503c37e965de825131462a1a (diff)
crypto: inside-secure - Add support for the ofb(sm4) skcipher
This patch adds support for SM4 in OFB mode, i.e. skcipher ofb(sm4). changes since v1: - nothing 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')
-rw-r--r--drivers/crypto/inside-secure/safexcel.c1
-rw-r--r--drivers/crypto/inside-secure/safexcel.h1
-rw-r--r--drivers/crypto/inside-secure/safexcel_cipher.c36
3 files changed, 38 insertions, 0 deletions
diff --git a/drivers/crypto/inside-secure/safexcel.c b/drivers/crypto/inside-secure/safexcel.c
index ac1d5b89cd8d..e3873f2db7d3 100644
--- a/drivers/crypto/inside-secure/safexcel.c
+++ b/drivers/crypto/inside-secure/safexcel.c
@@ -1180,6 +1180,7 @@ static struct safexcel_alg_template *safexcel_algs[] = {
&safexcel_alg_hmac_sm3,
&safexcel_alg_ecb_sm4,
&safexcel_alg_cbc_sm4,
+ &safexcel_alg_ofb_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 7c63590f4e5d..765f5e8706bd 100644
--- a/drivers/crypto/inside-secure/safexcel.h
+++ b/drivers/crypto/inside-secure/safexcel.h
@@ -881,5 +881,6 @@ extern struct safexcel_alg_template safexcel_alg_sm3;
extern struct safexcel_alg_template safexcel_alg_hmac_sm3;
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;
#endif
diff --git a/drivers/crypto/inside-secure/safexcel_cipher.c b/drivers/crypto/inside-secure/safexcel_cipher.c
index f5d39e1a74e7..b0e4bfb2e518 100644
--- a/drivers/crypto/inside-secure/safexcel_cipher.c
+++ b/drivers/crypto/inside-secure/safexcel_cipher.c
@@ -2743,3 +2743,39 @@ struct safexcel_alg_template safexcel_alg_cbc_sm4 = {
},
},
};
+
+static int safexcel_skcipher_sm4_ofb_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_OFB;
+ return 0;
+}
+
+struct safexcel_alg_template safexcel_alg_ofb_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 = "ofb(sm4)",
+ .cra_driver_name = "safexcel-ofb-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_ofb_cra_init,
+ .cra_exit = safexcel_skcipher_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};