Updated: {nettle/libnettle4/libhogweed2/libnettle-devel}-2.7.1-1: A cryptographic library that is designed to fit easily in more or less any context

[Dr. Volker Zell <dr dot volker dot zell at oracle dot com>]

Hi

New versions of 'nettle/libnettle4/libhogweed2/libnettle-devel' have been uploaded to a server near you.

 o Build for cygwin 2.4.1-1 with gcc-5.3.0-3
 o Update to 2.7.1
 o Fix for CVEs, see https://cygwin.com/ml/cygwin-apps/2016-03/msg00000.html


nettle NEWS:
============
  
	* Fixed a bug in the new ECC code. The ecc_j_to_a function
	  called GMP:s mpn_mul_n (via ecc_modp_mul) with overlapping
	  input and output arguments, which is not supported.

	* The assembly files for SHA1, SHA256 and AES depend on ARMv6
          instructions, breaking nettle-2.7 for pre-v6 ARM processors.
          The configure script now enables those assembly files only
          when building for ARMv6 or later.
	  
	* Use a more portable C expression for rotations. The
	  previous version used the following "standard" expression
	  for 32-bit rotation:

	    (x << n) | (x >> (32 - n))

	  But this gives undefined behavior (according to the C
	  specification) for n = 0. The rotate expression is replaced
	  by the more portable:

	    (x << n) | (x >> ((-n)&31))

	  This change affects only CAST128, which uses non-constant
	  rotation counts. Unfortunately, the new expression is poorly
	  optimized by released versions of gcc, making CAST128 a bit
	  slower. This is being fixed by the gcc hackers, see
	  http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57157.


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