crypto: inside-secure - hmac(md5) support

This patch adds support for the hmac(md5) algorithm in the Inside Secure
SafeXcel cryptographic engine driver.

Signed-off-by: Ofer Heifetz <oferh@marvell.com>
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/inside-secure/safexcel.c b/drivers/crypto/inside-secure/safexcel.c
index 188e459..a52f0da 100644 (file)
--- 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 fcd26ae..19610b0 100644 (file)
--- 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 4fec8fe..46aac55 100644 (file)
--- 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,
+                       },
+               },
+       },
+};