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Message-ID: <20250218104943.2304730-3-t-pratham@ti.com>
Date: Tue, 18 Feb 2025 16:19:43 +0530
From: T Pratham <t-pratham@...com>
To: Herbert Xu <herbert@...dor.apana.org.au>,
"David S. Miller"
<davem@...emloft.net>, T Pratham <t-pratham@...com>
CC: <linux-crypto@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
Vignesh
Raghavendra <vigneshr@...com>,
Praneeth Bajjuri <praneeth@...com>,
Kamlesh
Gurudasani <kamlesh@...com>,
Manorit Chawdhry <m-chawdhry@...com>
Subject: [PATCH RFC 2/2] crypto: ti: Add support for MD5 in DTHE V2 Hashing Engine driver
Add support for MD5 algorithm of the hashing engine of DTHE V2 crypto
accelerator driver.
Signed-off-by: T Pratham <t-pratham@...com>
---
drivers/crypto/ti/Kconfig | 1 +
drivers/crypto/ti/dthev2.c | 56 ++++++++++++++++++++++++++++++++++++++
2 files changed, 57 insertions(+)
diff --git a/drivers/crypto/ti/Kconfig b/drivers/crypto/ti/Kconfig
index 39d9d8cb6b78..ab4da73dffc4 100644
--- a/drivers/crypto/ti/Kconfig
+++ b/drivers/crypto/ti/Kconfig
@@ -6,6 +6,7 @@ config CRYPTO_DEV_TI_DTHE_V2
select CRYPTO_SKCIPHER
select CRYPTO_SHA256
select CRYPTO_SHA512
+ select CRYPTO_MD5
help
This enables support for the TI DTHE V2 hw crypto accelerator
which can be found on TI K3 SOCs. Selecting this enables use
diff --git a/drivers/crypto/ti/dthev2.c b/drivers/crypto/ti/dthev2.c
index d5ed0f4621f5..ff2d5ef47c2a 100644
--- a/drivers/crypto/ti/dthev2.c
+++ b/drivers/crypto/ti/dthev2.c
@@ -25,6 +25,7 @@
#include <crypto/internal/aead.h>
#include <crypto/internal/hash.h>
#include <crypto/internal/skcipher.h>
+#include <crypto/md5.h>
#include <crypto/sha2.h>
#include <linux/delay.h>
@@ -363,6 +364,25 @@ static int dthe_sha224_cra_init(struct crypto_tfm *tfm)
return 0;
}
+static int dthe_md5_cra_init(struct crypto_tfm *tfm)
+{
+ struct dthe_tfm_ctx *ctx = crypto_tfm_ctx(tfm);
+ struct dthe_data *dev_data = dthe_get_dev(ctx);
+
+ if (!dev_data)
+ return -ENODEV;
+
+ ctx->ctx_info.hash_ctx = kzalloc(sizeof(*ctx->ctx_info.hash_ctx), GFP_KERNEL);
+ if (!ctx->ctx_info.hash_ctx)
+ return -ENOMEM;
+
+ ctx->ctx_info.hash_ctx->mode = DTHE_HASH_MD5;
+ ctx->ctx_info.hash_ctx->block_size = MD5_BLOCK_WORDS * 4;
+ ctx->ctx_info.hash_ctx->digest_size = MD5_DIGEST_SIZE;
+ ctx->ctx_info.hash_ctx->phash_size = MD5_DIGEST_SIZE;
+ return 0;
+}
+
static void dthe_hash_cra_exit(struct crypto_tfm *tfm)
{
struct dthe_tfm_ctx *ctx = crypto_tfm_ctx(tfm);
@@ -602,6 +622,8 @@ static int dthe_hash_update(struct ahash_request *req)
memcpy(sctx->phash, sha256_zero_message_hash, sctx->digest_size);
else if (sctx->mode == DTHE_HASH_SHA224)
memcpy(sctx->phash, sha224_zero_message_hash, sctx->digest_size);
+ else if (sctx->mode == DTHE_HASH_MD5)
+ memcpy(sctx->phash, md5_zero_message_hash, sctx->digest_size);
}
return 0;
@@ -736,6 +758,8 @@ static int dthe_hash_final(struct ahash_request *req)
memcpy(req->result, sha256_zero_message_hash, sctx->digest_size);
else if (sctx->mode == DTHE_HASH_SHA224)
memcpy(req->result, sha224_zero_message_hash, sctx->digest_size);
+ else if (sctx->mode == DTHE_HASH_MD5)
+ memcpy(req->result, md5_zero_message_hash, sctx->digest_size);
}
memcpy(req->result, sctx->phash, sctx->digest_size);
@@ -774,6 +798,8 @@ static int dthe_hash_finup(struct ahash_request *req)
memcpy(req->result, sha256_zero_message_hash, sctx->digest_size);
else if (sctx->mode == DTHE_HASH_SHA224)
memcpy(req->result, sha224_zero_message_hash, sctx->digest_size);
+ else if (sctx->mode == DTHE_HASH_MD5)
+ memcpy(req->result, md5_zero_message_hash, sctx->digest_size);
}
return 0;
}
@@ -870,6 +896,8 @@ static int dthe_hash_digest(struct ahash_request *req)
memcpy(req->result, sha256_zero_message_hash, sctx->digest_size);
else if (sctx->mode == DTHE_HASH_SHA224)
memcpy(req->result, sha224_zero_message_hash, sctx->digest_size);
+ else if (sctx->mode == DTHE_HASH_MD5)
+ memcpy(req->result, md5_zero_message_hash, sctx->digest_size);
return 0;
}
@@ -1366,6 +1394,34 @@ static struct ahash_alg hash_algs[] = {
}
}
},
+ {
+ .init = dthe_hash_init,
+ .update = dthe_hash_update,
+ .final = dthe_hash_final,
+ .finup = dthe_hash_finup,
+ .digest = dthe_hash_digest,
+ .export = dthe_hash_export,
+ .import = dthe_hash_import,
+ .halg = {
+ .digestsize = MD5_DIGEST_SIZE,
+ .statesize = sizeof(struct dthe_hash_ctx),
+ .base = {
+ .cra_name = "md5",
+ .cra_driver_name = "md5-dthe_v2",
+ .cra_priority = 400,
+ .cra_flags = CRYPTO_ALG_TYPE_AHASH |
+ CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_OPTIONAL_KEY |
+ CRYPTO_ALG_KERN_DRIVER_ONLY |
+ CRYPTO_ALG_ALLOCATES_MEMORY,
+ .cra_blocksize = MD5_BLOCK_WORDS * 4,
+ .cra_ctxsize = sizeof(struct dthe_tfm_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_init = dthe_md5_cra_init,
+ .cra_exit = dthe_hash_cra_exit,
+ }
+ }
+ },
};
static struct skcipher_alg cipher_algs[] = {
--
2.34.1
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