linux-kernel - [RFC PATCH crypto -v3 1/2] AES-NI: Add support to access underlying blkcipher under cryptd ablkcipher

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1231919046.5937.159.camel@yhuang-dev.sh.intel.com>
Date:	Wed, 14 Jan 2009 15:44:06 +0800
From:	Huang Ying <ying.huang@...el.com>
To:	Herbert Xu <herbert@...dor.apana.org.au>
Cc:	Sebastian Siewior <linux-crypto@...breakpoint.cc>,
	linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org
Subject: [RFC PATCH crypto -v3 1/2] AES-NI: Add support to access
	underlying blkcipher under cryptd ablkcipher

cryptd_alloc_ablkcipher() will allocate a cryptd-ed ablkcipher for
specified algorithm name. The new allocated one is guaranteed to be
cryptd-ed ablkcipher, so the blkcipher underlying can be gotten via
cryptd_ablkcipher_child().

Signed-off-by: Huang Ying <ying.huang@...el.com>

---
 crypto/cryptd.c         |   19 +++++++++++++++++++
 include/crypto/algapi.h |    5 +++++
 2 files changed, 24 insertions(+)

--- a/crypto/cryptd.c
+++ b/crypto/cryptd.c
@@ -537,6 +537,25 @@ static struct crypto_template cryptd_tmp
 	.module = THIS_MODULE,
 };
 
+struct crypto_ablkcipher *cryptd_alloc_ablkcipher(const char *alg_name,
+						  u32 type, u32 mask)
+{
+	char cryptd_alg_name[CRYPTO_MAX_ALG_NAME];
+
+	if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME,
+		     "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME)
+		return ERR_PTR(-EINVAL);
+	return crypto_alloc_ablkcipher(cryptd_alg_name, type, mask);
+}
+EXPORT_SYMBOL_GPL(cryptd_alloc_ablkcipher);
+
+struct crypto_blkcipher *cryptd_ablkcipher_child(struct crypto_ablkcipher *tfm)
+{
+	struct cryptd_blkcipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
+	return ctx->child;
+}
+EXPORT_SYMBOL_GPL(cryptd_ablkcipher_child);
+
 static inline int cryptd_create_thread(struct cryptd_state *state,
 				       int (*fn)(void *data), const char *name)
 {
--- a/include/crypto/algapi.h
+++ b/include/crypto/algapi.h
@@ -145,6 +145,11 @@ int blkcipher_walk_virt_block(struct blk
 			      struct blkcipher_walk *walk,
 			      unsigned int blocksize);
 
+/* alg_name should be algorithm to be cryptd-ed */
+struct crypto_ablkcipher *cryptd_alloc_ablkcipher(const char *alg_name,
+						  u32 type, u32 mask);
+struct crypto_blkcipher *cryptd_ablkcipher_child(struct crypto_ablkcipher *tfm);
+
 static inline void *crypto_tfm_ctx_aligned(struct crypto_tfm *tfm)
 {
 	unsigned long addr = (unsigned long)crypto_tfm_ctx(tfm);


Download attachment "signature.asc" of type "application/pgp-signature" (198 bytes)