add the 'ead' package (emergency access daemon), which can provide remote access...

[openwrt/staging/yousong.git] / package / ead / src / tinysrp / bn_word.c

diff --git a/package/ead/src/tinysrp/bn_word.c b/package/ead/src/tinysrp/bn_word.c
new file mode 100644 (file)
index 0000000..7820e08
--- /dev/null
+++ b/package/ead/src/tinysrp/bn_word.c
@@ -0,0 +1,130 @@
+/* crypto/bn/bn_word.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include <stdio.h>
+#include "bn_lcl.h"
+
+int BN_add_word(BIGNUM *a, BN_ULONG w)
+       {
+       BN_ULONG l;
+       int i;
+
+       if (a->neg)
+               {
+               a->neg=0;
+               i=BN_sub_word(a,w);
+               if (!BN_is_zero(a))
+                       a->neg=!(a->neg);
+               return(i);
+               }
+       w&=BN_MASK2;
+       if (bn_wexpand(a,a->top+1) == NULL) return(0);
+       i=0;
+       for (;;)
+               {
+               l=(a->d[i]+(BN_ULONG)w)&BN_MASK2;
+               a->d[i]=l;
+               if (w > l)
+                       w=1;
+               else
+                       break;
+               i++;
+               }
+       if (i >= a->top)
+               a->top++;
+       return(1);
+       }
+
+int BN_sub_word(BIGNUM *a, BN_ULONG w)
+       {
+       int i;
+
+       if (BN_is_zero(a) || a->neg)
+               {
+               a->neg=0;
+               i=BN_add_word(a,w);
+               a->neg=1;
+               return(i);
+               }
+
+       w&=BN_MASK2;
+       if ((a->top == 1) && (a->d[0] < w))
+               {
+               a->d[0]=w-a->d[0];
+               a->neg=1;
+               return(1);
+               }
+       i=0;
+       for (;;)
+               {
+               if (a->d[i] >= w)
+                       {
+                       a->d[i]-=w;
+                       break;
+                       }
+               else
+                       {
+                       a->d[i]=(a->d[i]-w)&BN_MASK2;
+                       i++;
+                       w=1;
+                       }
+               }
+       if ((a->d[i] == 0) && (i == (a->top-1)))
+               a->top--;
+       return(1);
+       }