6799218 RSA using Solaris Kernel Crypto framework lagging behind OpenSSL
5016936 bignumimpl:big_mul: potential memory leak
6810280 panic from bignum module: vmem_xalloc(): size == 0

@@ -17,44 +17,44 @@
  * information: Portions Copyright [yyyy] [name of copyright owner]
  *
  * CDDL HEADER END
  */
 /*
- * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
+ * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
 #ifndef _BIGNUM_H
 #define _BIGNUM_H
 
-#pragma ident   "%Z%%M% %I%     %E% SMI"
-
 #ifdef  __cplusplus
 extern "C" {
 #endif
 
 #include <sys/types.h>
 
-#ifndef __sparcv9
-#define BIGNUM_CHUNK_32
-#else
+#if defined(__sparcv9) || defined(__amd64) /* 64-bit chunk size */
 #ifndef UMUL64
-#define UMUL64
+#define UMUL64  /* 64-bit multiplication results are supported */
 #endif
+#else
+#define BIGNUM_CHUNK_32
 #endif
 
 
 #define BITSINBYTE      8
 
+/* Bignum "digits" (aka "chunks" or "words") are either 32- or 64-bits */
 #ifdef BIGNUM_CHUNK_32
 #define BIG_CHUNK_SIZE          32
 #define BIG_CHUNK_TYPE          uint32_t
 #define BIG_CHUNK_TYPE_SIGNED   int32_t
 #define BIG_CHUNK_HIGHBIT       0x80000000
 #define BIG_CHUNK_ALLBITS       0xffffffff
 #define BIG_CHUNK_LOWHALFBITS   0xffff
 #define BIG_CHUNK_HALF_HIGHBIT  0x8000
+
 #else
 #define BIG_CHUNK_SIZE          64
 #define BIG_CHUNK_TYPE          uint64_t
 #define BIG_CHUNK_TYPE_SIGNED   int64_t
 #define BIG_CHUNK_HIGHBIT       0x8000000000000000ULL

@@ -76,14 +76,14 @@
  * 0 should be represented by size>=1, size>=len>=1, sign=1,
  * value[i]=0 for 0<i<len
  */
 typedef struct {
         /* size and len in units of BIG_CHUNK_TYPE words  */
-        int size; /* size of memory allocated for value   */
-        int len;  /* number of words that hold valid data in value */
+        uint32_t        size;   /* size of memory allocated for value  */
+        uint32_t        len;    /* number of valid data words in value */
         int sign; /* 1 for nonnegative, -1 for negative   */
-        int malloced; /* 1 if value was malloced 0 if not */
+        int             malloced; /* 1 if value was malloced, 0 if not */
         BIG_CHUNK_TYPE *value;
 } BIGNUM;
 
 #define BIGTMPSIZE 65