From: Ofer Heifetz <oferh@xxxxxxxxxxx>
This patch adds support for the hmac(md5) algorithm in the Inside Secure
SafeXcel cryptographic engine driver.
Signed-off-by: Ofer Heifetz <oferh@xxxxxxxxxxx>
Signed-off-by: Antoine Tenart <antoine.tenart@xxxxxxxxxxx>
---
drivers/crypto/inside-secure/safexcel.c | 3 +-
drivers/crypto/inside-secure/safexcel.h | 1 +
drivers/crypto/inside-secure/safexcel_hash.c | 57 ++++++++++++++++++++
3 files changed, 60 insertions(+), 1 deletion(-)
diff --git a/drivers/crypto/inside-secure/safexcel.c b/drivers/crypto/inside-secure/safexcel.c
index 54f5d2c131a9..ea8070c33743 100644
--- a/drivers/crypto/inside-secure/safexcel.c
+++ b/drivers/crypto/inside-secure/safexcel.c
@@ -406,7 +406,7 @@ static int safexcel_hw_init(struct safexcel_crypto_priv *priv)
val |= EIP197_PROTOCOL_ENCRYPT_ONLY | EIP197_PROTOCOL_HASH_ONLY;
val |= EIP197_PROTOCOL_ENCRYPT_HASH | EIP197_PROTOCOL_HASH_DECRYPT;
val |= EIP197_ALG_AES_ECB | EIP197_ALG_AES_CBC;
- val |= EIP197_ALG_MD5;
+ val |= EIP197_ALG_MD5 | EIP197_ALG_HMAC_MD5;
val |= EIP197_ALG_SHA1 | EIP197_ALG_HMAC_SHA1;
val |= EIP197_ALG_SHA2 | EIP197_ALG_HMAC_SHA2;
writel(val, EIP197_PE(priv) + EIP197_PE_EIP96_FUNCTION_EN(pe));
@@ -848,6 +848,7 @@ static struct safexcel_alg_template *safexcel_algs[] = {
&safexcel_alg_sha256,
&safexcel_alg_sha384,
&safexcel_alg_sha512,
+ &safexcel_alg_hmac_md5,
&safexcel_alg_hmac_sha1,
&safexcel_alg_hmac_sha224,
&safexcel_alg_hmac_sha256,
diff --git a/drivers/crypto/inside-secure/safexcel.h b/drivers/crypto/inside-secure/safexcel.h
index fcd26ae70166..19610b03bceb 100644
--- a/drivers/crypto/inside-secure/safexcel.h
+++ b/drivers/crypto/inside-secure/safexcel.h
@@ -698,6 +698,7 @@ extern struct safexcel_alg_template safexcel_alg_sha224;
extern struct safexcel_alg_template safexcel_alg_sha256;
extern struct safexcel_alg_template safexcel_alg_sha384;
extern struct safexcel_alg_template safexcel_alg_sha512;
+extern struct safexcel_alg_template safexcel_alg_hmac_md5;
extern struct safexcel_alg_template safexcel_alg_hmac_sha1;
extern struct safexcel_alg_template safexcel_alg_hmac_sha224;
extern struct safexcel_alg_template safexcel_alg_hmac_sha256;
diff --git a/drivers/crypto/inside-secure/safexcel_hash.c b/drivers/crypto/inside-secure/safexcel_hash.c
index 4fec8fe07044..46aac55c0b31 100644
--- a/drivers/crypto/inside-secure/safexcel_hash.c
+++ b/drivers/crypto/inside-secure/safexcel_hash.c
@@ -1619,3 +1619,60 @@ struct safexcel_alg_template safexcel_alg_md5 = {
},
},
};
+
+static int safexcel_hmac_md5_init(struct ahash_request *areq)
+{
+ struct safexcel_ahash_req *req = ahash_request_ctx(areq);
+
+ safexcel_md5_init(areq);
+ req->digest = CONTEXT_CONTROL_DIGEST_HMAC;
+ return 0;
+}
+
+static int safexcel_hmac_md5_setkey(struct crypto_ahash *tfm, const u8 *key,
+ unsigned int keylen)
+{
+ return safexcel_hmac_alg_setkey(tfm, key, keylen, "safexcel-md5",
+ MD5_DIGEST_SIZE);
+}
+
+static int safexcel_hmac_md5_digest(struct ahash_request *areq)
+{
+ int ret = safexcel_hmac_md5_init(areq);
+
+ if (ret)
+ return ret;
+
+ return safexcel_ahash_finup(areq);
+}
+
+struct safexcel_alg_template safexcel_alg_hmac_md5 = {
+ .type = SAFEXCEL_ALG_TYPE_AHASH,
+ .engines = EIP97IES | EIP197B | EIP197D,
+ .alg.ahash = {
+ .init = safexcel_hmac_md5_init,
+ .update = safexcel_ahash_update,
+ .final = safexcel_ahash_final,
+ .finup = safexcel_ahash_finup,
+ .digest = safexcel_hmac_md5_digest,
+ .setkey = safexcel_hmac_md5_setkey,
+ .export = safexcel_ahash_export,
+ .import = safexcel_ahash_import,
+ .halg = {
+ .digestsize = MD5_DIGEST_SIZE,
+ .statesize = sizeof(struct safexcel_ahash_export_state),
+ .base = {
+ .cra_name = "hmac(md5)",
+ .cra_driver_name = "safexcel-hmac-md5",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = MD5_HMAC_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct safexcel_ahash_ctx),
+ .cra_init = safexcel_ahash_cra_init,
+ .cra_exit = safexcel_ahash_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+ },
+};
--
2.17.1
