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[Qemu-devel] [PATCH v2 for-2.10 14/18] crypto: hash: add afalg-backend h
From: |
Longpeng(Mike) |
Subject: |
[Qemu-devel] [PATCH v2 for-2.10 14/18] crypto: hash: add afalg-backend hash support |
Date: |
Mon, 17 Apr 2017 09:33:22 +0800 |
Adds afalg-backend hash support: introduces some private APIs
firstly, and then intergrates them into qcrypto_hash_afalg_driver.
Signed-off-by: Longpeng(Mike) <address@hidden>
---
crypto/Makefile.objs | 1 +
crypto/afalgpriv.h | 1 +
crypto/hash-afalg.c | 151 +++++++++++++++++++++++++++++++++++++++++++++++++++
crypto/hash.c | 11 ++++
crypto/hashpriv.h | 4 ++
5 files changed, 168 insertions(+)
create mode 100644 crypto/hash-afalg.c
diff --git a/crypto/Makefile.objs b/crypto/Makefile.objs
index d2e8fa8..2b99e08 100644
--- a/crypto/Makefile.objs
+++ b/crypto/Makefile.objs
@@ -12,6 +12,7 @@ crypto-obj-y += desrfb.o
crypto-obj-y += cipher.o
crypto-obj-$(CONFIG_AF_ALG) += afalg.o
crypto-obj-$(CONFIG_AF_ALG) += cipher-afalg.o
+crypto-obj-$(CONFIG_AF_ALG) += hash-afalg.o
crypto-obj-y += tlscreds.o
crypto-obj-y += tlscredsanon.o
crypto-obj-y += tlscredsx509.o
diff --git a/crypto/afalgpriv.h b/crypto/afalgpriv.h
index 7db0597..71ec267 100644
--- a/crypto/afalgpriv.h
+++ b/crypto/afalgpriv.h
@@ -24,6 +24,7 @@
#endif
#define AFALG_TYPE_CIPHER "skcipher"
+#define AFALG_TYPE_HASH "hash"
#define ALG_OPTYPE_LEN 4
#define ALG_MSGIV_LEN(len) (sizeof(struct af_alg_iv) + (len))
diff --git a/crypto/hash-afalg.c b/crypto/hash-afalg.c
new file mode 100644
index 0000000..1d0e052
--- /dev/null
+++ b/crypto/hash-afalg.c
@@ -0,0 +1,151 @@
+/*
+ * QEMU Crypto af_alg-backend hash support
+ *
+ * Copyright (c) 2017 HUAWEI TECHNOLOGIES CO., LTD.
+ *
+ * Authors:
+ * Longpeng(Mike) <address@hidden>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or
+ * (at your option) any later version. See the COPYING file in the
+ * top-level directory.
+ */
+#include "qemu/osdep.h"
+#include "qemu/iov.h"
+#include "qemu/sockets.h"
+#include "qemu-common.h"
+#include "qapi/error.h"
+#include "crypto/hash.h"
+#include "hashpriv.h"
+
+static char *
+qcrypto_afalg_hash_format_name(QCryptoHashAlgorithm alg,
+ Error **errp)
+{
+ char *name;
+ const char *alg_name = NULL;
+ int ret;
+
+ switch (alg) {
+ case QCRYPTO_HASH_ALG_MD5:
+ alg_name = "md5";
+ break;
+ case QCRYPTO_HASH_ALG_SHA1:
+ alg_name = "sha1";
+ break;
+ case QCRYPTO_HASH_ALG_SHA224:
+ alg_name = "sha224";
+ break;
+ case QCRYPTO_HASH_ALG_SHA256:
+ alg_name = "sha256";
+ break;
+ case QCRYPTO_HASH_ALG_SHA384:
+ alg_name = "sha384";
+ break;
+ case QCRYPTO_HASH_ALG_SHA512:
+ alg_name = "sha512";
+ break;
+ case QCRYPTO_HASH_ALG_RIPEMD160:
+ alg_name = "rmd160";
+ break;
+
+ default:
+ error_setg(errp, "Unsupported hash algorithm %d", alg);
+ return NULL;
+ }
+
+ name = (char *)g_new0(int8_t, SALG_NAME_LEN_MAX);
+ ret = snprintf(name, SALG_NAME_LEN_MAX, "%s", alg_name);
+ if (ret < 0 || ret >= SALG_NAME_LEN_MAX) {
+ error_setg(errp, "Build hash name(name='%s') failed",
+ alg_name);
+ g_free(name);
+ return NULL;
+ }
+
+ return name;
+}
+
+static QCryptoAFAlg *
+qcrypto_afalg_hash_ctx_new(QCryptoHashAlgorithm alg, Error **errp)
+{
+ QCryptoAFAlg *afalg;
+ char *name;
+
+ name = qcrypto_afalg_hash_format_name(alg, errp);
+ if (!name) {
+ return NULL;
+ }
+
+ afalg = qcrypto_afalg_comm_alloc(AFALG_TYPE_HASH, name, errp);
+ if (!afalg) {
+ goto error;
+ }
+
+ /* prepare msg header */
+ afalg->msg = g_new0(struct msghdr, 1);
+
+cleanup:
+ g_free(name);
+ return afalg;
+
+error:
+ qcrypto_afalg_comm_free(afalg);
+ goto cleanup;
+}
+
+static int
+qcrypto_afalg_hash_bytesv(QCryptoHashAlgorithm alg,
+ const struct iovec *iov,
+ size_t niov, uint8_t **result,
+ size_t *resultlen,
+ Error **errp)
+{
+ QCryptoAFAlg *afalg;
+ struct iovec outv;
+ int ret = 0;
+ const int except_len = qcrypto_hash_digest_len(alg);
+
+ if (*resultlen == 0) {
+ *resultlen = except_len;
+ *result = g_new0(uint8_t, *resultlen);
+ } else if (*resultlen != except_len) {
+ error_setg(errp,
+ "Result buffer size %zu is not match hash %d",
+ *resultlen, except_len);
+ return -1;
+ }
+
+ afalg = qcrypto_afalg_hash_ctx_new(alg, errp);
+ if (afalg == NULL) {
+ return -1;
+ }
+
+ /* send data to kernel's crypto core */
+ ret = iov_send_recv(afalg->opfd, iov, niov,
+ 0, iov_size(iov, niov), true);
+ if (ret < 0) {
+ error_setg_errno(errp, errno, "Send data to afalg-core failed");
+ goto out;
+ }
+
+ /* hash && get result */
+ outv.iov_base = *result;
+ outv.iov_len = *resultlen;
+ afalg->msg->msg_iov = &outv;
+ afalg->msg->msg_iovlen = 1;
+ ret = recvmsg(afalg->opfd, afalg->msg, 0);
+ if (ret != -1) {
+ ret = 0;
+ } else {
+ error_setg_errno(errp, errno, "Recv result from afalg-core failed");
+ }
+
+out:
+ qcrypto_afalg_comm_free(afalg);
+ return ret;
+}
+
+QCryptoHashDriver qcrypto_hash_afalg_driver = {
+ .hash_bytesv = qcrypto_afalg_hash_bytesv,
+};
diff --git a/crypto/hash.c b/crypto/hash.c
index c43fd87..ba30c9b 100644
--- a/crypto/hash.c
+++ b/crypto/hash.c
@@ -46,6 +46,17 @@ int qcrypto_hash_bytesv(QCryptoHashAlgorithm alg,
size_t *resultlen,
Error **errp)
{
+#ifdef CONFIG_AF_ALG
+ int ret;
+
+ ret = qcrypto_hash_afalg_driver.hash_bytesv(alg, iov, niov,
+ result, resultlen,
+ errp);
+ if (ret == 0) {
+ return ret;
+ }
+#endif
+
return qcrypto_hash_lib_driver.hash_bytesv(alg, iov, niov,
result, resultlen,
errp);
diff --git a/crypto/hashpriv.h b/crypto/hashpriv.h
index 5e505e0..d23662f 100644
--- a/crypto/hashpriv.h
+++ b/crypto/hashpriv.h
@@ -15,6 +15,8 @@
#ifndef QCRYPTO_HASHPRIV_H
#define QCRYPTO_HASHPRIV_H
+#include "afalgpriv.h"
+
typedef struct QCryptoHashDriver QCryptoHashDriver;
struct QCryptoHashDriver {
@@ -28,4 +30,6 @@ struct QCryptoHashDriver {
extern QCryptoHashDriver qcrypto_hash_lib_driver;
+extern QCryptoHashDriver qcrypto_hash_afalg_driver;
+
#endif
--
1.8.3.1
- [Qemu-devel] [PATCH v2 for-2.10 11/18] crypto: hmac: add hmac driver framework, (continued)
- [Qemu-devel] [PATCH v2 for-2.10 11/18] crypto: hmac: add hmac driver framework, Longpeng(Mike), 2017/04/16
- [Qemu-devel] [PATCH v2 for-2.10 16/18] tests: crypto: add cipher speed benchmark support, Longpeng(Mike), 2017/04/16
- [Qemu-devel] [PATCH v2 for-2.10 15/18] crypto: hmac: add af_alg hmac support, Longpeng(Mike), 2017/04/16
- [Qemu-devel] [PATCH v2 for-2.10 07/18] crypto: hmac: move crypto/hmac.h into include/crypto/, Longpeng(Mike), 2017/04/16
- [Qemu-devel] [PATCH v2 for-2.10 05/18] crypto: cipher: add cipher driver framework, Longpeng(Mike), 2017/04/16
- [Qemu-devel] [PATCH v2 for-2.10 14/18] crypto: hash: add afalg-backend hash support,
Longpeng(Mike) <=
- [Qemu-devel] [PATCH v2 for-2.10 13/18] crypto: cipher: add afalg-backend cipher support, Longpeng(Mike), 2017/04/16
Re: [Qemu-devel] [PATCH v2 for-2.10 00/18] crypto: add afalg-backend support, no-reply, 2017/04/16
Re: [Qemu-devel] [PATCH v2 for-2.10 00/18] crypto: add afalg-backend support, Longpeng (Mike), 2017/04/20