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authorRiccardo Spagni <ric@spagni.net>2014-10-06 08:51:44 +0200
committerRiccardo Spagni <ric@spagni.net>2014-10-06 08:52:16 +0200
commit3463f0ab52a84b79977c3e67177637e62265c89c (patch)
tree1e2077aa15fa18fcc9b00fa23c9514d46df6ef95 /external/unbound/compat/getentropy_win.c
parentfix for miniupnpc static compile under Windows (diff)
parentadded aabramov's gpg key (diff)
downloadmonero-3463f0ab52a84b79977c3e67177637e62265c89c.tar.xz
Merge pull request #171
32be6ae added aabramov's gpg key (Riccardo Spagni) 010bfcf minor English wordlist tweaks (Riccardo Spagni) 9ef094b added unbound to external deps (Riccardo Spagni) 732493c split mnemonic printout over 3 lines (Riccardo Spagni)
Diffstat (limited to 'external/unbound/compat/getentropy_win.c')
-rw-r--r--external/unbound/compat/getentropy_win.c56
1 files changed, 56 insertions, 0 deletions
diff --git a/external/unbound/compat/getentropy_win.c b/external/unbound/compat/getentropy_win.c
new file mode 100644
index 000000000..9dc55891e
--- /dev/null
+++ b/external/unbound/compat/getentropy_win.c
@@ -0,0 +1,56 @@
+/* $OpenBSD$ */
+
+/*
+ * Copyright (c) 2014, Theo de Raadt <deraadt@openbsd.org>
+ * Copyright (c) 2014, Bob Beck <beck@obtuse.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <windows.h>
+#include <errno.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <wincrypt.h>
+#include <process.h>
+
+int getentropy(void *buf, size_t len);
+
+/*
+ * On Windows, CryptGenRandom is supposed to be a well-seeded
+ * cryptographically strong random number generator.
+ */
+int
+getentropy(void *buf, size_t len)
+{
+ HCRYPTPROV provider;
+
+ if (len > 256) {
+ errno = EIO;
+ return -1;
+ }
+
+ if (CryptAcquireContext(&provider, NULL, NULL, PROV_RSA_FULL,
+ CRYPT_VERIFYCONTEXT) != 0)
+ goto fail;
+ if (CryptGenRandom(provider, len, buf) != 0) {
+ CryptReleaseContext(provider, 0);
+ goto fail;
+ }
+ CryptReleaseContext(provider, 0);
+ return (0);
+
+fail:
+ errno = EIO;
+ return (-1);
+}