Add reference ChaCha20 and Poly1305 implementations.

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

diff --git a/crypto/bn/bn_lib.c b/crypto/bn/bn_lib.c
index f10f44a86fa65841e3409169c8a9a8a673880632..b9e96b553ee6e1932b1322f63c0bd3c690940df7 100644 (file)
--- a/crypto/bn/bn_lib.c
+++ b/crypto/bn/bn_lib.c
@@ -66,8 +66,6 @@
 #include "internal/cryptlib.h"
 #include "bn_lcl.h"
 
-const char BN_version[] = "Big Number" OPENSSL_VERSION_PTEXT;
-
 /* This stuff appears to be completely unused, so is deprecated */
 #ifndef OPENSSL_NO_DEPRECATED
 /*-
@@ -267,9 +265,11 @@ void BN_free(BIGNUM *a)
     }
 }
 
-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 +277,11 @@ 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);
 }
@@ -293,7 +289,7 @@ 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);
  }
@@ -554,7 +550,9 @@ 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;
@@ -568,6 +566,7 @@ 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) {
@@ -927,7 +926,7 @@ 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;
@@ -935,7 +934,7 @@ 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)