Diff: wolfcrypt/src/cryptodev.c

Revision:

14:167253f4e170

diff -r f67a6c6013ca -r 167253f4e170 wolfcrypt/src/cryptodev.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wolfcrypt/src/cryptodev.c	Sat Aug 18 22:19:52 2018 +0000
@@ -0,0 +1,208 @@
+/* cryptodev.c
+ *
+ * Copyright (C) 2006-2018 wolfSSL Inc.
+ *
+ * This file is part of wolfSSL.
+ *
+ * wolfSSL is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * wolfSSL is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* This framework provides a central place for crypto hardware integration
+   using the devId scheme. If not supported return `NOT_COMPILED_IN`. */
+
+#ifdef HAVE_CONFIG_H
+    #include <config.h>
+#endif
+
+#include <wolfssl/wolfcrypt/settings.h>
+
+#ifdef WOLF_CRYPTO_DEV
+
+#include <wolfssl/wolfcrypt/cryptodev.h>
+#include <wolfssl/wolfcrypt/error-crypt.h>
+#include <wolfssl/wolfcrypt/logging.h>
+
+
+/* TODO: Consider linked list with mutex */
+#ifndef MAX_CRYPTO_DEVICES
+#define MAX_CRYPTO_DEVICES 8
+#endif
+
+typedef struct CryptoDev {
+    int devId;
+    CryptoDevCallbackFunc cb;
+    void* ctx;
+} CryptoDev;
+static CryptoDev gCryptoDev[MAX_CRYPTO_DEVICES];
+
+static CryptoDev* wc_CryptoDev_FindDevice(int devId)
+{
+    int i;
+    for (i=0; i<MAX_CRYPTO_DEVICES; i++) {
+        if (gCryptoDev[i].devId == devId)
+            return &gCryptoDev[i];
+    }
+    return NULL;
+}
+
+void wc_CryptoDev_Init(void)
+{
+    int i;
+    for (i=0; i<MAX_CRYPTO_DEVICES; i++)
+        gCryptoDev[i].devId = INVALID_DEVID;
+}
+
+int wc_CryptoDev_RegisterDevice(int devId, CryptoDevCallbackFunc cb, void* ctx)
+{
+    /* find existing or new */
+    CryptoDev* dev = wc_CryptoDev_FindDevice(devId);
+    if (dev == NULL)
+        dev = wc_CryptoDev_FindDevice(INVALID_DEVID);
+
+    if (dev == NULL)
+        return BUFFER_E; /* out of devices */
+
+    dev->devId = devId;
+    dev->cb = cb;
+    dev->ctx = ctx;
+
+    return 0;
+}
+
+void wc_CryptoDev_UnRegisterDevice(int devId)
+{
+    CryptoDev* dev = wc_CryptoDev_FindDevice(devId);
+    if (dev) {
+        XMEMSET(dev, 0, sizeof(*dev));
+        dev->devId = INVALID_DEVID;
+    }
+}
+
+#ifndef NO_RSA
+int wc_CryptoDev_Rsa(const byte* in, word32 inLen, byte* out,
+    word32* outLen, int type, RsaKey* key, WC_RNG* rng)
+{
+    int ret = NOT_COMPILED_IN;
+    CryptoDev* dev;
+
+    /* locate registered callback */
+    dev = wc_CryptoDev_FindDevice(key->devId);
+    if (dev) {
+        if (dev->cb) {
+            wc_CryptoInfo cryptoInfo;
+            XMEMSET(&cryptoInfo, 0, sizeof(cryptoInfo));
+            cryptoInfo.algo_type = WC_ALGO_TYPE_PK;
+            cryptoInfo.pk.type = WC_PK_TYPE_RSA;
+            cryptoInfo.pk.rsa.in = in;
+            cryptoInfo.pk.rsa.inLen = inLen;
+            cryptoInfo.pk.rsa.out = out;
+            cryptoInfo.pk.rsa.outLen = outLen;
+            cryptoInfo.pk.rsa.type = type;
+            cryptoInfo.pk.rsa.key = key;
+            cryptoInfo.pk.rsa.rng = rng;
+
+            ret = dev->cb(key->devId, &cryptoInfo, dev->ctx);
+        }
+    }
+
+    return ret;
+}
+#endif /* !NO_RSA */
+
+#ifdef HAVE_ECC
+int wc_CryptoDev_Ecdh(ecc_key* private_key, ecc_key* public_key,
+    byte* out, word32* outlen)
+{
+    int ret = NOT_COMPILED_IN;
+    CryptoDev* dev;
+
+    /* locate registered callback */
+    dev = wc_CryptoDev_FindDevice(private_key->devId);
+    if (dev) {
+        if (dev->cb) {
+            wc_CryptoInfo cryptoInfo;
+            XMEMSET(&cryptoInfo, 0, sizeof(cryptoInfo));
+            cryptoInfo.algo_type = WC_ALGO_TYPE_PK;
+            cryptoInfo.pk.type = WC_PK_TYPE_ECDH;
+            cryptoInfo.pk.ecdh.private_key = private_key;
+            cryptoInfo.pk.ecdh.public_key = public_key;
+            cryptoInfo.pk.ecdh.out = out;
+            cryptoInfo.pk.ecdh.outlen = outlen;
+
+            ret = dev->cb(private_key->devId, &cryptoInfo, dev->ctx);
+        }
+    }
+
+    return ret;
+}
+
+int wc_CryptoDev_EccSign(const byte* in, word32 inlen, byte* out,
+    word32 *outlen, WC_RNG* rng, ecc_key* key)
+{
+    int ret = NOT_COMPILED_IN;
+    CryptoDev* dev;
+
+    /* locate registered callback */
+    dev = wc_CryptoDev_FindDevice(key->devId);
+    if (dev) {
+        if (dev->cb) {
+            wc_CryptoInfo cryptoInfo;
+            XMEMSET(&cryptoInfo, 0, sizeof(cryptoInfo));
+            cryptoInfo.algo_type = WC_ALGO_TYPE_PK;
+            cryptoInfo.pk.type = WC_PK_TYPE_ECDSA_SIGN;
+            cryptoInfo.pk.eccsign.in = in;
+            cryptoInfo.pk.eccsign.inlen = inlen;
+            cryptoInfo.pk.eccsign.out = out;
+            cryptoInfo.pk.eccsign.outlen = outlen;
+            cryptoInfo.pk.eccsign.rng = rng;
+            cryptoInfo.pk.eccsign.key = key;
+
+            ret = dev->cb(key->devId, &cryptoInfo, dev->ctx);
+        }
+    }
+
+    return ret;
+}
+
+int wc_CryptoDev_EccVerify(const byte* sig, word32 siglen,
+    const byte* hash, word32 hashlen, int* res, ecc_key* key)
+{
+    int ret = NOT_COMPILED_IN;
+    CryptoDev* dev;
+
+    /* locate registered callback */
+    dev = wc_CryptoDev_FindDevice(key->devId);
+    if (dev) {
+        if (dev->cb) {
+            wc_CryptoInfo cryptoInfo;
+            XMEMSET(&cryptoInfo, 0, sizeof(cryptoInfo));
+            cryptoInfo.algo_type = WC_ALGO_TYPE_PK;
+            cryptoInfo.pk.type = WC_PK_TYPE_ECDSA_VERIFY;
+            cryptoInfo.pk.eccverify.sig = sig;
+            cryptoInfo.pk.eccverify.siglen = siglen;
+            cryptoInfo.pk.eccverify.hash = hash;
+            cryptoInfo.pk.eccverify.hashlen = hashlen;
+            cryptoInfo.pk.eccverify.res = res;
+            cryptoInfo.pk.eccverify.key = key;
+
+            ret = dev->cb(key->devId, &cryptoInfo, dev->ctx);
+        }
+    }
+
+    return ret;
+}
+#endif /* HAVE_ECC */
+
+#endif /* WOLF_CRYPTO_DEV */
+