/* -*-c-*-
*
- * $Id: rand.h,v 1.3 1999/10/15 21:04:30 mdw Exp $
+ * $Id: rand.h,v 1.5 1999/12/13 15:34:15 mdw Exp $
*
* Secure random number generator
*
/*----- Revision history --------------------------------------------------*
*
* $Log: rand.h,v $
+ * Revision 1.5 1999/12/13 15:34:15 mdw
+ * Fix a typo.
+ *
+ * Revision 1.4 1999/12/10 23:29:48 mdw
+ * Change header file guard names.
+ *
* Revision 1.3 1999/10/15 21:04:30 mdw
* Increase output buffer a bit for performance.
*
* concerns I expressed about the Linux generator in a Usenet article to
* sci.crypt.
*
- * The generator is divided into two parts: an input pool and an outpu
+ * The generator is divided into two parts: an input pool and an output
* buffer. New random data is placed into the pool in the way described
* below, which is shamelessly stolen from the Linux /dev/random generator.
* The only interaction that the pool has on the output buffer is through the
* an adversary has to guess before predicting generator output.
*/
-#ifndef RAND_H
-#define RAND_H
+#ifndef CATACOMB_RAND_H
+#define CATACOMB_RAND_H
#ifdef __cplusplus
extern "C" {
#include <stddef.h>
-#include "rmd160-hmac.h"
+#ifndef CATACOMB_GRAND_H
+# include "grand.h"
+#endif
+
+#ifndef CATACOMB_RMD160_HMAC_H
+# include "rmd160-hmac.h"
+#endif
/*----- Magic numbers -----------------------------------------------------*/
* Use: Gets random data from the pool. The pool's contents can't be
* determined from the output of this function; nor can the
* output data be determined from a knowledge of the data input
- * to the pool wihtout also having knowledge of the secret key.
+ * to the pool without also having knowledge of the secret key.
* The good bits counter is decremented, although no special
* action is taken if it reaches zero.
*/
extern void rand_getgood(rand_pool */*r*/, void */*p*/, size_t /*sz*/);
+/*----- Generic random number generator interface -------------------------*/
+
+/* --- Miscellaneous operations --- */
+
+enum {
+ RAND_GATE = GRAND_SPECIFIC, /* No args */
+ RAND_STRETCH, /* No args */
+ RAND_KEY, /* @const void *k, size_t sz@ */
+ RAND_NOISESRC /* @const rand_source *s@ */
+};
+
+/* --- Default random number generator --- */
+
+extern grand rand_global;
+
+/* --- @rand_create@ --- *
+ *
+ * Arguments: ---
+ *
+ * Returns: Pointer to a generic generator.
+ *
+ * Use: Constructs a generic generator interface over a Catacomb
+ * entropy pool generator.
+ */
+
+extern grand *rand_create(void);
+
/*----- That's all, folks -------------------------------------------------*/
#ifdef __cplusplus