aboutsummaryrefslogtreecommitdiff
path: root/lib/mbedtls-2.27.0/library/entropy_poll.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/mbedtls-2.27.0/library/entropy_poll.c')
-rw-r--r--lib/mbedtls-2.27.0/library/entropy_poll.c291
1 files changed, 0 insertions, 291 deletions
diff --git a/lib/mbedtls-2.27.0/library/entropy_poll.c b/lib/mbedtls-2.27.0/library/entropy_poll.c
deleted file mode 100644
index 2c1e093..0000000
--- a/lib/mbedtls-2.27.0/library/entropy_poll.c
+++ /dev/null
@@ -1,291 +0,0 @@
-/*
- * Platform-specific and custom entropy polling functions
- *
- * Copyright The Mbed TLS Contributors
- * SPDX-License-Identifier: Apache-2.0
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may
- * not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#if defined(__linux__) && !defined(_GNU_SOURCE)
-/* Ensure that syscall() is available even when compiling with -std=c99 */
-#define _GNU_SOURCE
-#endif
-
-#include "common.h"
-
-#include <string.h>
-
-#if defined(MBEDTLS_ENTROPY_C)
-
-#include "mbedtls/entropy.h"
-#include "mbedtls/entropy_poll.h"
-#include "mbedtls/error.h"
-
-#if defined(MBEDTLS_TIMING_C)
-#include "mbedtls/timing.h"
-#endif
-#if defined(MBEDTLS_HAVEGE_C)
-#include "mbedtls/havege.h"
-#endif
-#if defined(MBEDTLS_ENTROPY_NV_SEED)
-#include "mbedtls/platform.h"
-#endif
-
-#if !defined(MBEDTLS_NO_PLATFORM_ENTROPY)
-
-#if !defined(unix) && !defined(__unix__) && !defined(__unix) && \
- !defined(__APPLE__) && !defined(_WIN32) && !defined(__QNXNTO__) && \
- !defined(__HAIKU__) && !defined(__midipix__)
-#error "Platform entropy sources only work on Unix and Windows, see MBEDTLS_NO_PLATFORM_ENTROPY in config.h"
-#endif
-
-#if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)
-
-#if !defined(_WIN32_WINNT)
-#define _WIN32_WINNT 0x0400
-#endif
-#include <windows.h>
-#include <wincrypt.h>
-
-int mbedtls_platform_entropy_poll( void *data, unsigned char *output, size_t len,
- size_t *olen )
-{
- HCRYPTPROV provider;
- ((void) data);
- *olen = 0;
-
- if( CryptAcquireContext( &provider, NULL, NULL,
- PROV_RSA_FULL, CRYPT_VERIFYCONTEXT ) == FALSE )
- {
- return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED );
- }
-
- if( CryptGenRandom( provider, (DWORD) len, output ) == FALSE )
- {
- CryptReleaseContext( provider, 0 );
- return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED );
- }
-
- CryptReleaseContext( provider, 0 );
- *olen = len;
-
- return( 0 );
-}
-#else /* _WIN32 && !EFIX64 && !EFI32 */
-
-/*
- * Test for Linux getrandom() support.
- * Since there is no wrapper in the libc yet, use the generic syscall wrapper
- * available in GNU libc and compatible libc's (eg uClibc).
- */
-#if ((defined(__linux__) && defined(__GLIBC__)) || defined(__midipix__))
-#include <unistd.h>
-#include <sys/syscall.h>
-#if defined(SYS_getrandom)
-#define HAVE_GETRANDOM
-#include <errno.h>
-
-static int getrandom_wrapper( void *buf, size_t buflen, unsigned int flags )
-{
- /* MemSan cannot understand that the syscall writes to the buffer */
-#if defined(__has_feature)
-#if __has_feature(memory_sanitizer)
- memset( buf, 0, buflen );
-#endif
-#endif
- return( syscall( SYS_getrandom, buf, buflen, flags ) );
-}
-#endif /* SYS_getrandom */
-#endif /* __linux__ || __midipix__ */
-
-#if defined(__FreeBSD__) || defined(__DragonFly__)
-#include <sys/param.h>
-#if (defined(__FreeBSD__) && __FreeBSD_version >= 1200000) || \
- (defined(__DragonFly__) && __DragonFly_version >= 500700)
-#include <errno.h>
-#include <sys/random.h>
-#define HAVE_GETRANDOM
-static int getrandom_wrapper( void *buf, size_t buflen, unsigned int flags )
-{
- return getrandom( buf, buflen, flags );
-}
-#endif /* (__FreeBSD__ && __FreeBSD_version >= 1200000) ||
- (__DragonFly__ && __DragonFly_version >= 500700) */
-#endif /* __FreeBSD__ || __DragonFly__ */
-
-/*
- * Some BSD systems provide KERN_ARND.
- * This is equivalent to reading from /dev/urandom, only it doesn't require an
- * open file descriptor, and provides up to 256 bytes per call (basically the
- * same as getentropy(), but with a longer history).
- *
- * Documentation: https://netbsd.gw.com/cgi-bin/man-cgi?sysctl+7
- */
-#if (defined(__FreeBSD__) || defined(__NetBSD__)) && !defined(HAVE_GETRANDOM)
-#include <sys/param.h>
-#include <sys/sysctl.h>
-#if defined(KERN_ARND)
-#define HAVE_SYSCTL_ARND
-
-static int sysctl_arnd_wrapper( unsigned char *buf, size_t buflen )
-{
- int name[2];
- size_t len;
-
- name[0] = CTL_KERN;
- name[1] = KERN_ARND;
-
- while( buflen > 0 )
- {
- len = buflen > 256 ? 256 : buflen;
- if( sysctl(name, 2, buf, &len, NULL, 0) == -1 )
- return( -1 );
- buflen -= len;
- buf += len;
- }
- return( 0 );
-}
-#endif /* KERN_ARND */
-#endif /* __FreeBSD__ || __NetBSD__ */
-
-#include <stdio.h>
-
-int mbedtls_platform_entropy_poll( void *data,
- unsigned char *output, size_t len, size_t *olen )
-{
- FILE *file;
- size_t read_len;
- int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
- ((void) data);
-
-#if defined(HAVE_GETRANDOM)
- ret = getrandom_wrapper( output, len, 0 );
- if( ret >= 0 )
- {
- *olen = ret;
- return( 0 );
- }
- else if( errno != ENOSYS )
- return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED );
- /* Fall through if the system call isn't known. */
-#else
- ((void) ret);
-#endif /* HAVE_GETRANDOM */
-
-#if defined(HAVE_SYSCTL_ARND)
- ((void) file);
- ((void) read_len);
- if( sysctl_arnd_wrapper( output, len ) == -1 )
- return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED );
- *olen = len;
- return( 0 );
-#else
-
- *olen = 0;
-
- file = fopen( "/dev/urandom", "rb" );
- if( file == NULL )
- return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED );
-
- read_len = fread( output, 1, len, file );
- if( read_len != len )
- {
- fclose( file );
- return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED );
- }
-
- fclose( file );
- *olen = len;
-
- return( 0 );
-#endif /* HAVE_SYSCTL_ARND */
-}
-#endif /* _WIN32 && !EFIX64 && !EFI32 */
-#endif /* !MBEDTLS_NO_PLATFORM_ENTROPY */
-
-#if defined(MBEDTLS_TEST_NULL_ENTROPY)
-int mbedtls_null_entropy_poll( void *data,
- unsigned char *output, size_t len, size_t *olen )
-{
- ((void) data);
- ((void) output);
-
- *olen = 0;
- if( len < sizeof(unsigned char) )
- return( 0 );
-
- output[0] = 0;
- *olen = sizeof(unsigned char);
- return( 0 );
-}
-#endif
-
-#if defined(MBEDTLS_TIMING_C)
-int mbedtls_hardclock_poll( void *data,
- unsigned char *output, size_t len, size_t *olen )
-{
- unsigned long timer = mbedtls_timing_hardclock();
- ((void) data);
- *olen = 0;
-
- if( len < sizeof(unsigned long) )
- return( 0 );
-
- memcpy( output, &timer, sizeof(unsigned long) );
- *olen = sizeof(unsigned long);
-
- return( 0 );
-}
-#endif /* MBEDTLS_TIMING_C */
-
-#if defined(MBEDTLS_HAVEGE_C)
-int mbedtls_havege_poll( void *data,
- unsigned char *output, size_t len, size_t *olen )
-{
- mbedtls_havege_state *hs = (mbedtls_havege_state *) data;
- *olen = 0;
-
- if( mbedtls_havege_random( hs, output, len ) != 0 )
- return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED );
-
- *olen = len;
-
- return( 0 );
-}
-#endif /* MBEDTLS_HAVEGE_C */
-
-#if defined(MBEDTLS_ENTROPY_NV_SEED)
-int mbedtls_nv_seed_poll( void *data,
- unsigned char *output, size_t len, size_t *olen )
-{
- unsigned char buf[MBEDTLS_ENTROPY_BLOCK_SIZE];
- size_t use_len = MBEDTLS_ENTROPY_BLOCK_SIZE;
- ((void) data);
-
- memset( buf, 0, MBEDTLS_ENTROPY_BLOCK_SIZE );
-
- if( mbedtls_nv_seed_read( buf, MBEDTLS_ENTROPY_BLOCK_SIZE ) < 0 )
- return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED );
-
- if( len < use_len )
- use_len = len;
-
- memcpy( output, buf, use_len );
- *olen = use_len;
-
- return( 0 );
-}
-#endif /* MBEDTLS_ENTROPY_NV_SEED */
-
-#endif /* MBEDTLS_ENTROPY_C */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-22 03:35:19 +0000