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Add RAND_METHOD and some associated functions.

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@17094 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
2006-04-17 12:19:35 +00:00
parent 9d126566c5
commit 45a1e8c9ef
2 changed files with 117 additions and 11 deletions
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86
lib/des/rand.c
View File

@@ -43,8 +43,10 @@ RCSID("$Id$");
#include <roken.h>
int
RAND_bytes(void *outdata, size_t size)
const RAND_METHOD *default_meth;
static int
get_device_fd(void)
{
static const char *rnd_devices[] = {
"/dev/random",
@@ -57,15 +59,28 @@ RAND_bytes(void *outdata, size_t size)
for(p = rnd_devices; *p; p++) {
int fd = open(*p, O_RDONLY | O_NDELAY);
if(fd >= 0 && read(fd, outdata, size) == size) {
close(fd);
return 1;
}
close(fd);
if(fd >= 0)
return fd;
}
return -1;
}
return 0;
int
RAND_bytes(void *outdata, size_t size)
{
ssize_t ret;
int fd;
fd = get_device_fd();
if (fd < 0)
return 0;
ret = read(fd, outdata, size);
close(fd);
if (size != ret)
return 0;
return 1;
}
int
@@ -74,3 +89,56 @@ RAND_pseudo_bytes(void *outdata, size_t num)
return RAND_bytes(outdata, num);
}
void
RAND_seed(const void *indata, size_t size)
{
int fd = get_device_fd();
if (fd < 0)
return;
write(fd, indata, size);
close(fd);
}
int
RAND_set_rand_method(const RAND_METHOD *meth)
{
default_meth = meth;
return 1;
}
const RAND_METHOD *
RAND_get_rand_method(void)
{
return default_meth;
}
int
RAND_set_rand_engine(ENGINE *engine)
{
return 1;
}
int
RAND_load_file(const char *filename, size_t size)
{
return 1;
}
int
RAND_write_file(const char *filename)
{
return 1;
}
int
RAND_status(void)
{
return 1;
}
int
RAND_egd(const char *filename)
{
return 1;
}

42
lib/des/rand.h
View File

@@ -1,3 +1,4 @@
/*
* Copyright (c) 2006 Kungliga Tekniska H<>gskolan
* (Royal Institute of Technology, Stockholm, Sweden).
@@ -39,16 +40,53 @@
#define _HEIM_RAND_H 1
#include <hcrypto/bn.h>
#include <hcrypto/engine.h>
/* symbol renaming */
#define RAND_bytes hc_RAND_bytes
#define RAND_pseudo_bytes hc_RAND_pseudo_bytes
#define RAND_seed hc_RAND_seed
#define RAND_set_rand_method hc_RAND_set_rand_method
#define RAND_get_rand_method hc_RAND_get_rand_method
#define RAND_set_rand_engine hc_RAND_set_rand_engine
#define RAND_load_file hc_RAND_load_file
#define RAND_write_file hc_RAND_write_file
#define RAND_status hc_RAND_status
#define RAND_egd hc_RAND_egd
/*
*
*/
int RAND_bytes(void *, size_t num);
int RAND_pseudo_bytes(void *, size_t);
typedef struct RAND_METHOD RAND_METHOD;
struct RAND_METHOD
{
void (*seed)(const void *, int);
int (*bytes)(unsigned char *, int);
void (*cleanup)(void);
void (*add)(const void *, int, double);
int (*pseudorand)(unsigned char *, int);
int (*status)(void);
};
/*
*
*/
int RAND_bytes(void *, size_t num);
int RAND_pseudo_bytes(void *, size_t);
void RAND_seed(const void *, size_t);
int RAND_set_rand_method(const RAND_METHOD *);
const RAND_METHOD *
RAND_get_rand_method(void);
int RAND_set_rand_engine(ENGINE *);
int RAND_load_file(const char *, size_t);
int RAND_write_file(const char *);
int RAND_status(void);
int RAND_egd(const char *);
#endif /* _HEIM_RAND_H */