Remove unused internal macros

[openssl.git] / crypto / bn / bn_lib.c

diff --git a/crypto/bn/bn_lib.c b/crypto/bn/bn_lib.c
index b5f827a36cf8af9daaddaaa8591b584d5c2759bb..150f4b80deaa00b8330cc5e24fc19b06f10d5da2 100644 (file)
--- a/crypto/bn/bn_lib.c
+++ b/crypto/bn/bn_lib.c
@@ -65,11 +65,10 @@
 #include <limits.h>
 #include "internal/cryptlib.h"
 #include "bn_lcl.h"
-
-const char BN_version[] = "Big Number" OPENSSL_VERSION_PTEXT;
+#include <openssl/opensslconf.h>
 
 /* This stuff appears to be completely unused, so is deprecated */
-#ifndef OPENSSL_NO_DEPRECATED
+#if OPENSSL_API_COMPAT < 0x00908000L
 /*-
  * For a 32 bit machine
  * 2 -   4 ==  128
@@ -223,6 +222,15 @@ int BN_num_bits(const BIGNUM *a)
     return ((i * BN_BITS2) + BN_num_bits_word(a->d[i]));
 }
 
+static void bn_free_d(BIGNUM *a)
+{
+    if (BN_get_flags(a,BN_FLG_SECURE))
+        OPENSSL_secure_free(a->d);
+    else
+        OPENSSL_free(a->d);
+}
+
+
 void BN_clear_free(BIGNUM *a)
 {
     int i;
@@ -232,15 +240,11 @@ void BN_clear_free(BIGNUM *a)
     bn_check_top(a);
     if (a->d != NULL) {
         OPENSSL_cleanse(a->d, a->dmax * sizeof(a->d[0]));
-        if (!(BN_get_flags(a, BN_FLG_STATIC_DATA))) {
-            if (BN_get_flags(a,BN_FLG_SECURE))
-                OPENSSL_secure_free(a->d);
-            else
-                OPENSSL_free(a->d);
-        }
+        if (!BN_get_flags(a, BN_FLG_STATIC_DATA))
+            bn_free_d(a);
     }
     i = BN_get_flags(a, BN_FLG_MALLOCED);
-    OPENSSL_cleanse(a, sizeof(BIGNUM));
+    OPENSSL_cleanse(a, sizeof(*a));
     if (i)
         OPENSSL_free(a);
 }
@@ -251,25 +255,22 @@ void BN_free(BIGNUM *a)
         return;
     bn_check_top(a);
     if (!BN_get_flags(a, BN_FLG_STATIC_DATA))
-    if ((a->d != NULL) && !(BN_get_flags(a, BN_FLG_STATIC_DATA))) {
-        if (BN_get_flags(a, BN_FLG_SECURE))
-            OPENSSL_secure_free(a->d);
-        else
-            OPENSSL_free(a->d);
-    }
+        bn_free_d(a);
     if (a->flags & BN_FLG_MALLOCED)
         OPENSSL_free(a);
     else {
-#ifndef OPENSSL_NO_DEPRECATED
+#if OPENSSL_API_COMPAT < 0x00908000L
         a->flags |= BN_FLG_FREE;
 #endif
         a->d = NULL;
     }
 }
 
-void BN_init(BIGNUM *a)
+void bn_init(BIGNUM *a)
 {
-    memset(a, 0, sizeof(*a));
+    static BIGNUM nilbn;
+
+    *a = nilbn;
     bn_check_top(a);
 }
 
@@ -277,15 +278,11 @@ BIGNUM *BN_new(void)
 {
     BIGNUM *ret;
 
-    if ((ret = OPENSSL_malloc(sizeof(*ret))) == NULL) {
+    if ((ret = OPENSSL_zalloc(sizeof(*ret))) == NULL) {
         BNerr(BN_F_BN_NEW, ERR_R_MALLOC_FAILURE);
         return (NULL);
     }
     ret->flags = BN_FLG_MALLOCED;
-    ret->top = 0;
-    ret->neg = 0;
-    ret->dmax = 0;
-    ret->d = NULL;
     bn_check_top(ret);
     return (ret);
 }
@@ -293,12 +290,12 @@ BIGNUM *BN_new(void)
  BIGNUM *BN_secure_new(void)
  {
      BIGNUM *ret = BN_new();
-     if (ret)
+     if (ret != NULL)
          ret->flags |= BN_FLG_SECURE;
      return (ret);
  }
 
-/* This is used both by bn_expand2() and bn_dup_expand() */
+/* This is used by bn_expand2() */
 /* The caller MUST check that words > b->dmax before calling this */
 static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
 {
@@ -399,10 +396,8 @@ BIGNUM *bn_expand2(BIGNUM *b, int words)
         if (!a)
             return NULL;
         if (b->d) {
-            if (BN_get_flags(b,BN_FLG_SECURE))
-                OPENSSL_secure_free(b->d);
-            else
-                OPENSSL_free(b->d);
+            OPENSSL_cleanse(b->d, b->dmax * sizeof(b->d[0]));
+            bn_free_d(b);
         }
         b->d = a;
         b->dmax = words;
@@ -556,7 +551,9 @@ BIGNUM *BN_bin2bn(const unsigned char *s, int len, BIGNUM *ret)
     if (ret == NULL)
         return (NULL);
     bn_check_top(ret);
-    l = 0;
+    /* Skip leading zero's. */
+    for ( ; len > 0 && *s == 0; s++, len--)
+        continue;
     n = len;
     if (n == 0) {
         ret->top = 0;
@@ -570,6 +567,7 @@ BIGNUM *BN_bin2bn(const unsigned char *s, int len, BIGNUM *ret)
     }
     ret->top = i;
     ret->neg = 0;
+    l = 0;
     while (n--) {
         l = (l << 8L) | *(s++);
         if (m-- == 0) {
@@ -929,7 +927,7 @@ int BN_to_montgomery(BIGNUM *r, const BIGNUM *a, BN_MONT_CTX *mont,
     return BN_mod_mul_montgomery(r, a, &(mont->RR), mont, ctx);
 }
 
-void BN_with_flags(BIGNUM *dest, const BIGNUM *b, int n)
+void BN_with_flags(BIGNUM *dest, const BIGNUM *b, int flags)
 {
     dest->d = b->d;
     dest->top = b->top;
@@ -937,7 +935,7 @@ void BN_with_flags(BIGNUM *dest, const BIGNUM *b, int n)
     dest->neg = b->neg;
     dest->flags = ((dest->flags & BN_FLG_MALLOCED)
                    | (b->flags & ~BN_FLG_MALLOCED)
-                   | BN_FLG_STATIC_DATA | n);
+                   | BN_FLG_STATIC_DATA | flags);
 }
 
 BN_GENCB *BN_GENCB_new(void)