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early-access version 2698

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pineappleEA
2022-04-24 22:29:35 +02:00
parent c96f949832
commit caa0c2911b
486 changed files with 37806 additions and 14362 deletions
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27
externals/libressl/crypto/compat/getentropy_win.c vendored
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@@ -1,4 +1,4 @@
/* $OpenBSD: getentropy_win.c,v 1.5 2016/08/07 03:27:21 tb Exp $ */
/* $OpenBSD: getentropy_win.c,v 1.6 2020/11/11 10:41:24 bcook Exp $ */
/*
* Copyright (c) 2014, Theo de Raadt <deraadt@openbsd.org>
@@ -21,39 +21,30 @@
*/
#include <windows.h>
#include <bcrypt.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.
* On Windows, BCryptGenRandom with BCRYPT_USE_SYSTEM_PREFERRED_RNG is supposed
* to be a well-seeded, cryptographically strong random number generator.
* https://docs.microsoft.com/en-us/windows/win32/api/bcrypt/nf-bcrypt-bcryptgenrandom
*/
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;
if (FAILED(BCryptGenRandom(NULL, buf, len, BCRYPT_USE_SYSTEM_PREFERRED_RNG))) {
errno = EIO;
return (-1);
}
CryptReleaseContext(provider, 0);
return (0);
fail:
errno = EIO;
return (-1);
return (0);
}