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author | Riccardo Spagni <ric@spagni.net> | 2014-10-06 08:51:44 +0200 |
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committer | Riccardo Spagni <ric@spagni.net> | 2014-10-06 08:52:16 +0200 |
commit | 3463f0ab52a84b79977c3e67177637e62265c89c (patch) | |
tree | 1e2077aa15fa18fcc9b00fa23c9514d46df6ef95 /external/unbound/compat/getentropy_win.c | |
parent | fix for miniupnpc static compile under Windows (diff) | |
parent | added aabramov's gpg key (diff) | |
download | monero-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.c | 56 |
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); +} |