boringssl/crypto/rand_extra/rand_extra.c
Adam Langley 7784104dd8 Move much of rand/ into the FIPS module.
Support for platforms that we don't support FIPS on doesn't need to be
in the module. Also, functions for dealing with whether fork-unsafe
buffering is enabled are left out because they aren't implementing any
cryptography and they use global r/w state, making their inclusion
painful.

Change-Id: I71a0123db6f5449e9dfc7ec7dea0944428e661aa
Reviewed-on: https://boringssl-review.googlesource.com/15084
Reviewed-by: Adam Langley <agl@google.com>
2017-04-21 22:03:18 +00:00

69 lines
1.8 KiB
C

/* Copyright (c) 2017, Google Inc.
*
* Permission to use, copy, modify, and/or 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 <openssl/rand.h>
#include <limits.h>
void RAND_seed(const void *buf, int num) {
/* OpenSSH calls |RAND_seed| before jailing on the assumption that any needed
* file descriptors etc will be opened. */
uint8_t unused;
RAND_bytes(&unused, sizeof(unused));
}
int RAND_load_file(const char *path, long num) {
if (num < 0) { /* read the "whole file" */
return 1;
} else if (num <= INT_MAX) {
return (int) num;
} else {
return INT_MAX;
}
}
const char *RAND_file_name(char *buf, size_t num) { return NULL; }
void RAND_add(const void *buf, int num, double entropy) {}
int RAND_egd(const char *path) {
return 255;
}
int RAND_poll(void) {
return 1;
}
int RAND_status(void) {
return 1;
}
static const struct rand_meth_st kSSLeayMethod = {
RAND_seed,
RAND_bytes,
RAND_cleanup,
RAND_add,
RAND_pseudo_bytes,
RAND_status,
};
RAND_METHOD *RAND_SSLeay(void) {
return (RAND_METHOD*) &kSSLeayMethod;
}
void RAND_set_rand_method(const RAND_METHOD *method) {}
void RAND_cleanup(void) {}