This patch adds the hmac(sha256) support to the Inside Secure
cryptographic engine driver.
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 | 80 +++++++++++++++++++++++++---
3 files changed, 75 insertions(+), 9 deletions(-)
diff --git a/drivers/crypto/inside-secure/safexcel.c b/drivers/crypto/inside-secure/safexcel.c
index 7b291068222f..5c19bdb28fe1 100644
--- a/drivers/crypto/inside-secure/safexcel.c
+++ b/drivers/crypto/inside-secure/safexcel.c
@@ -354,7 +354,7 @@ static int safexcel_hw_init(struct safexcel_crypto_priv *priv)
val |= EIP197_PROTOCOL_ENCRYPT_ONLY | EIP197_PROTOCOL_HASH_ONLY;
val |= EIP197_ALG_AES_ECB | EIP197_ALG_AES_CBC;
val |= EIP197_ALG_SHA1 | EIP197_ALG_HMAC_SHA1;
- val |= EIP197_ALG_SHA2;
+ val |= EIP197_ALG_SHA2 | EIP197_ALG_HMAC_SHA2;
writel(val, EIP197_PE(priv) + EIP197_PE_EIP96_FUNCTION_EN);
/* Command Descriptor Rings prepare */
@@ -768,6 +768,7 @@ static struct safexcel_alg_template *safexcel_algs[] = {
&safexcel_alg_sha224,
&safexcel_alg_sha256,
&safexcel_alg_hmac_sha1,
+ &safexcel_alg_hmac_sha256,
};
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 8c139b98a580..4ada6be304f4 100644
--- a/drivers/crypto/inside-secure/safexcel.h
+++ b/drivers/crypto/inside-secure/safexcel.h
@@ -632,5 +632,6 @@ extern struct safexcel_alg_template safexcel_alg_sha1;
extern struct safexcel_alg_template safexcel_alg_sha224;
extern struct safexcel_alg_template safexcel_alg_sha256;
extern struct safexcel_alg_template safexcel_alg_hmac_sha1;
+extern struct safexcel_alg_template safexcel_alg_hmac_sha256;
#endif
diff --git a/drivers/crypto/inside-secure/safexcel_hash.c b/drivers/crypto/inside-secure/safexcel_hash.c
index 845a5ebf25b4..16023bc0ec00 100644
--- a/drivers/crypto/inside-secure/safexcel_hash.c
+++ b/drivers/crypto/inside-secure/safexcel_hash.c
@@ -22,8 +22,8 @@ struct safexcel_ahash_ctx {
u32 alg;
- u32 ipad[SHA1_DIGEST_SIZE / sizeof(u32)];
- u32 opad[SHA1_DIGEST_SIZE / sizeof(u32)];
+ u32 ipad[SHA256_DIGEST_SIZE / sizeof(u32)];
+ u32 opad[SHA256_DIGEST_SIZE / sizeof(u32)];
};
struct safexcel_ahash_req {
@@ -961,20 +961,21 @@ static int safexcel_hmac_setkey(const char *alg, const u8 *key,
return ret;
}
-static int safexcel_hmac_sha1_setkey(struct crypto_ahash *tfm, const u8 *key,
- unsigned int keylen)
+static int safexcel_hmac_alg_setkey(struct crypto_ahash *tfm, const u8 *key,
+ unsigned int keylen, const char *alg,
+ unsigned int state_sz)
{
struct safexcel_ahash_ctx *ctx = crypto_tfm_ctx(crypto_ahash_tfm(tfm));
struct safexcel_crypto_priv *priv = ctx->priv;
struct safexcel_ahash_export_state istate, ostate;
int ret, i;
- ret = safexcel_hmac_setkey("safexcel-sha1", key, keylen, &istate, &ostate);
+ ret = safexcel_hmac_setkey(alg, key, keylen, &istate, &ostate);
if (ret)
return ret;
if (priv->version == EIP197 && ctx->base.ctxr) {
- for (i = 0; i < SHA1_DIGEST_SIZE / sizeof(u32); i++) {
+ for (i = 0; i < state_sz / sizeof(u32); i++) {
if (ctx->ipad[i] != le32_to_cpu(istate.state[i]) ||
ctx->opad[i] != le32_to_cpu(ostate.state[i])) {
ctx->base.needs_inv = true;
@@ -983,12 +984,19 @@ static int safexcel_hmac_sha1_setkey(struct crypto_ahash *tfm, const u8 *key,
}
}
- memcpy(ctx->ipad, &istate.state, SHA1_DIGEST_SIZE);
- memcpy(ctx->opad, &ostate.state, SHA1_DIGEST_SIZE);
+ memcpy(ctx->ipad, &istate.state, state_sz);
+ memcpy(ctx->opad, &ostate.state, state_sz);
return 0;
}
+static int safexcel_hmac_sha1_setkey(struct crypto_ahash *tfm, const u8 *key,
+ unsigned int keylen)
+{
+ return safexcel_hmac_alg_setkey(tfm, key, keylen, "safexcel-sha1",
+ SHA1_DIGEST_SIZE);
+}
+
struct safexcel_alg_template safexcel_alg_hmac_sha1 = {
.type = SAFEXCEL_ALG_TYPE_AHASH,
.alg.ahash = {
@@ -1142,3 +1150,59 @@ struct safexcel_alg_template safexcel_alg_sha224 = {
},
},
};
+
+static int safexcel_hmac_sha256_setkey(struct crypto_ahash *tfm, const u8 *key,
+ unsigned int keylen)
+{
+ return safexcel_hmac_alg_setkey(tfm, key, keylen, "safexcel-sha256",
+ SHA256_DIGEST_SIZE);
+}
+
+static int safexcel_hmac_sha256_init(struct ahash_request *areq)
+{
+ struct safexcel_ahash_req *req = ahash_request_ctx(areq);
+
+ safexcel_sha256_init(areq);
+ req->digest = CONTEXT_CONTROL_DIGEST_HMAC;
+ return 0;
+}
+
+static int safexcel_hmac_sha256_digest(struct ahash_request *areq)
+{
+ int ret = safexcel_hmac_sha256_init(areq);
+
+ if (ret)
+ return ret;
+
+ return safexcel_ahash_finup(areq);
+}
+
+struct safexcel_alg_template safexcel_alg_hmac_sha256 = {
+ .type = SAFEXCEL_ALG_TYPE_AHASH,
+ .alg.ahash = {
+ .init = safexcel_hmac_sha256_init,
+ .update = safexcel_ahash_update,
+ .final = safexcel_ahash_final,
+ .finup = safexcel_ahash_finup,
+ .digest = safexcel_hmac_sha256_digest,
+ .setkey = safexcel_hmac_sha256_setkey,
+ .export = safexcel_ahash_export,
+ .import = safexcel_ahash_import,
+ .halg = {
+ .digestsize = SHA256_DIGEST_SIZE,
+ .statesize = sizeof(struct safexcel_ahash_export_state),
+ .base = {
+ .cra_name = "hmac(sha256)",
+ .cra_driver_name = "safexcel-hmac-sha256",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = SHA256_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,
+ },
+ },
+ },
+};
--
2.14.3
