third_party/openssl: add ChaCha20+Poly1305 support.

openssl/crypto/cryptlib.c

 /* crypto/cryptlib.c */
 /* ====================================================================
  * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
  *
  * 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 above copyright
  *    notice, this list of conditions and the following disclaimer. 
@@ skipping 643 matching lines @@
         if (type < 0)
                 return("dynamic");
         else if (type < CRYPTO_NUM_LOCKS)
                 return(lock_names[type]);
         else if (type-CRYPTO_NUM_LOCKS > sk_OPENSSL_STRING_num(app_locks))
                 return("ERROR");
         else
                 return(sk_OPENSSL_STRING_value(app_locks,type-CRYPTO_NUM_LOCKS));
         }
 
+#if __arm__
+static int global_arm_neon_enabled = 0;
+
+void CRYPTO_set_NEON_capable(int on)
+        {
+        global_arm_neon_enabled = on != 0;
+        }
+
+int CRYPTO_is_NEON_capable()
+        {
+        return global_arm_neon_enabled;
+        }
+#endif
+
 #if     defined(__i386)   || defined(__i386__)   || defined(_M_IX86) || \
         defined(__INTEL__) || \
         defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64)
 
 unsigned int  OPENSSL_ia32cap_P[2];
 unsigned long *OPENSSL_ia32cap_loc(void)
 {   if (sizeof(long)==4)
         /*
          * If 32-bit application pulls address of OPENSSL_ia32cap_P[0]
          * clear second element to maintain the illusion that vector
@@ skipping 257 matching lines @@
         size_t i;
         const unsigned char *a = in_a;
         const unsigned char *b = in_b;
         unsigned char x = 0;
 
         for (i = 0; i < len; i++)
                 x |= a[i] ^ b[i];
 
         return x;
         }