./security/nettle, Cryptographic library

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Branch: CURRENT, Version: 3.4, Package name: nettle-3.4, Maintainer: pkgsrc-users

Nettle is a cryptographic library that is designed to fit easily in more
or less any context: In crypto toolkits for object-oriented languages
(C++, Python, Pike, ...), in applications like LSH or GNUPG, or even in
kernel space. In most contexts, you need more than the basic
cryptographic algorithms, you also need some way to keep track of available
algorithms, their properties and variants. You often have some algorithm
selection process, often dictated by a protocol you want to implement.

And as the requirements of applications differ in subtle and not so
subtle ways, an API that fits one application well can be a pain to use
in a different context. And that is why there are so many different
cryptographic libraries around.

Nettle tries to avoid this problem by doing one thing, the low-level
crypto stuff, and providing a simple but general interface to it.
In particular, Nettle doesn't do algorithm selection. It doesn't do
memory allocation. It doesn't do any I/O.

The idea is that one can build several application and context specific
interfaces on top of Nettle, and share the code, test cases, benchmarks,
documentation, etc. Examples are the Nettle module for the Pike
language, and LSH, which both use an object-oriented abstraction on top
of the library.

Required to run:

Required to build:

Master sites:

SHA1: f3c8495b7c43cba9cdd19503e7567095c680b490
RMD160: 56c59906e4bec5c0859abdd96645d5d54a8f78c4
Filesize: 1889.716 KB

Version history: (Expand)

CVS history: (Expand)

   2018-01-07 14:04:44 by Roland Illig | Files touched by this commit (583)
Log message:
Fix indentation in buildlink3.mk files.

The actual fix as been done by "pkglint -F */*/buildlink3.mk", and was
reviewed manually.

There are some .include lines that still are indented with zero spaces
although the surrounding .if is indented. This is existing practice.
   2017-11-28 15:06:12 by Thomas Klausner | Files touched by this commit (3) | Package updated
Log message:
nettle: update to 3.4.

NEWS for the Nettle 3.4 release

	This release fixes bugs and adds a few new features. It also
	addresses an ABI compatibility issue affecting Nettle-3.1 and
	later, see below.

	Bug fixes:

	* Fixed an improper use of GMP mpn_mul, breaking curve2559 and
	  eddsa on certain platforms. Reported by Sergei Trofimovich.

	* Fixed memory leak when handling invalid signatures in
	  ecdsa_verify. Fix contributed by Nikos Mavrogiannopoulos.

	* Fix compilation error with --enable-fat om ARM. Fix
	  contributed by Andreas Schneider.

	* Reorganized the way certain data items are made available.

	  Short version: Nettle header files now define the symbols
	  nettle_hashes, nettle_ciphers, and nettle_aeads, as
	  preprocessor macros invoking a corresponding accessor
	  function. For backwards ABI compatibility, the symbols are
	  still present in the compiled libraries, and with the same
	  sizes as in nettle-3.3.

	New features:

	* Support for RSA-PSS signatures, contributed by Daiki Ueno.

	* Support for the HKDF key derivation function, defined by RFC
	  5869. Contributed by Nikos Mavrogiannopoulos.

	* Support for the Cipher Feedback Mode (CFB), contributed by
	  Dmitry Eremin-Solenikov.

	* New accessor functions: nettle_get_hashes,
	  nettle_get_ciphers, nettle_get_aeads, nettle_get_secp_192r1,
	  nettle_get_secp_224r1, nettle_get_secp_256r1,
	  nettle_get_secp_384r1, nettle_get_secp_521r1.

	  For source-level compatibility with future versions,
	  applications are encouraged to migrate to using these
	  functions instead of referring to the corresponding data
	  items directly.


	* The base16 and base64 functions now use the type char * for
	  ascii data, rather than uint8_t *. This eliminates the last
	  pointer-signedness warnings when building Nettle. This is a
	  minor API change, and applications may need to be adjusted,
	  but the ABI is unaffected on all platforms I'm aware of.

	* The contents of the header file nettle/version.h is now
	  architecture independent, except in --enable-mini-gmp

	ABI issue:

	  Since the breakage was a bit subtle, let me document it
	  here. The nettle and hogweed libraries export a couple of
	  data symbols, and for some of these, the size was never
	  intended to be part of the ABI. E.g.,

	    extern const struct nettle_hash * const nettle_hashes[];

	  which is an NULL-terminated array.

	  It turns out the sizes nevertheless may leak into the ABI, and
	  that increasing the sizes can break old executables linked
	  with a newer version of the library.

	  When linking a classic non-PIE executable with a shared
	  library, we get ELF relocations of type R_X86_64_COPY for
	  references to data items. These mean that the linker allocates
	  space for the data item in the data segment of executable, at
	  a fixed address determined at link-time, and with size
	  extracted from the version of the .so-file seen when linking.

	  At load time, the run time linker then copies the contents of
	  the symbol from the .so file to that location, and uses the
	  copy instead of the version loaded with the .so-file. And if
	  the data item in the .so file used at load time is larger than
	  the data item seen at link time, it is silently truncated in
	  the process.

	  So when SHA3 hashes were was added to the nettle_hashes array
	  in the nettle-3.3 release, this way of linking produces a
	  truncated array at load time, no longer NULL-terminated.

	  We will get similar problems for planned extensions of the
	  internal struct ecc_curve, and exported data items like

	    extern const struct ecc_curve nettle_secp_256r1;

	  where the ecc_curve struct is only forward declared in the
	  public headers. To prepare, applications should migrate to
	  using the new function nettle_get_secp_256r1, and similarly
	  for the other curves.

	  In some future version, the plan is to add a leading
	  underscore to the name of the actual data items. E.g.,
	  nettle_hashes --> _nettle_hashes, breaking the ABI, while
	  keeping the nettle_get_hashes function and the nettle_hashes
	  macro as the supported ways to access it. We will also
	  rename nettle_secp_256r1 --> _nettle_secp_256r1, breaking
	  both ABI and API.

	  Note that data items like nettle_sha256 are *not* affected,
	  since the size and layout of this struct is considered part
	  of the ABI, and R_X86_64_COPY-relocations then work fine.
   2017-01-19 19:52:30 by Alistair G. Crooks | Files touched by this commit (352)
Log message:
Convert all occurrences (353 by my count) of

	MASTER_SITES= 	site1 \

style continuation lines to be simple repeated


lines. As previewed on tech-pkg. With thanks to rillig for fixing pkglint
   2016-10-03 14:28:19 by Thomas Klausner | Files touched by this commit (3) | Package updated
Log message:
Updated nettle to 3.3.

NEWS for the Nettle 3.3 release

	This release fixes a couple of bugs, and improves resistance
	to side-channel attacks on RSA and DSA private key operations.

	Changes in behavoir:

	* Invalid private RSA keys, with an even modulo, are now
	  rejected by rsa_private_key_prepare. (Earlier versions
	  allowed such keys, even if results of using them were bogus).

	  Nettle applications are required to call
	  rsa_private_key_prepare and check the return value, before
	  using any other RSA private key functions; failing to do so
	  may result in crashes for invalid private keys. As a
	  workaround for versions of Gnutls which don't use
	  rsa_private_key_prepare, additional checks for even moduli
	  are added to the rsa_*_tr functions which are used by all
	  recent versions of Gnutls.

	* Ignore bit 255 of the x coordinate of the input point to
	  curve25519_mul, as required by RFC 7748. To differentiate at
	  compile time, curve25519.h defines the constant


	* RSA and DSA now use side-channel silent modular
	  exponentiation, to defend against attacks on the private key
	  from evil processes sharing the same processor cache. This
	  attack scenario is of particular relevance when running an
	  HTTPS server on a virtual machine, where you don't know who
	  you share the cache hardware with.

	  (Private key operations on elliptic curves were already
	  side-channel silent).

	Bug fixes:

	* Fix sexp-conv crashes on invalid input. Reported by Hanno

	* Fix out-of-bounds read in des_weak_p. Fixed by Nikos

	* Fix a couple of formally undefined shift operations,
	  reported by Nikos Mavrogiannopoulos.

	* Fix compilation with c89. Reported by Henrik Grubbström.

	New features:

	* New function memeql_sec, for side-channel silent comparison
	  of two memory areas.


	* Building the public key support of nettle now requires GMP
	  version 5.0 or later (unless --enable-mini-gmp is used).

	* Filenames of windows DLL libraries now include major number
	  only. So the dll names change at the same time as the
	  corresponding soname on ELF platforms. Fixed by Nikos

	* Eliminate most pointer-signedness warnings. In the process,
	  the strings representing expression type for sexp_interator
	  functions were changed from const uint8_t * to const char *.
	  These functions are undocumented, and it doesn't change the
	  ABI on any platform I'm aware of.

	The shared library names are libnettle.so.6.3 and
	libhogweed.so.4.3, with sonames still libnettle.so.6 and
	libhogweed.so.4. It is intended to be fully binary compatible
	with nettle-3.1.
   2016-02-01 14:27:37 by Thomas Klausner | Files touched by this commit (3) | Package updated
Log message:
Update nettle to 3.2.

Fix some pkglint while here.

NEWS for the Nettle 3.2 release

	Bug fixes:

	* The SHA3 implementation is updated according to the FIPS 202
	  standard. It is not interoperable with earlier versions of
	  Nettle. Thanks to Nikos Mavrogiannopoulos. To easily
	  differentiate at compile time, sha3.h defines the constant

	* Fix corner-case carry propagation bugs affecting elliptic
	  curve operations on the curves secp_256r1 and secp_384r1 on
	  certain platforms, including x86_64. Reported by Hanno Böck.

	New features:

	* New functions for RSA private key operations, identified by
	  the "_tr" suffix, with better resistance to side channel
	  attacks and to hardware or software failures which could
	  break the CRT optimization. See the Nettle manual for
	  details. Initial patch by Nikos Mavrogiannopoulos.

	* New functions nettle_version_major, nettle_version_minor, as
	  a run-time variant of the compile-time constants


	* New ARM Neon implementation of the chacha stream cipher.


	* ABI detection on mips, with improved default libdir
	  location. Contributed by Klaus Ziegler.

	* Fixes for ARM assembly syntax, to work better with the clang
	  assembler. Thanks to Jukka Ukkonen.

	* Disabled use of ifunc relocations for fat builds, to fix
	  problems most easily triggered by using dlopen RTLD_NOW.

	The shared library names are libnettle.so.6.2 and
	libhogweed.so.4.2, with sonames still libnettle.so.6 and
	libhogweed.so.4. It is intended to be fully binary compatible
	with nettle-3.1.
   2015-11-04 02:18:12 by Alistair G. Crooks | Files touched by this commit (434)
Log message:
Add SHA512 digests for distfiles for security category

Problems found locating distfiles:
	Package f-prot-antivirus6-fs-bin: missing distfile fp-NetBSD.x86.32-fs-6.2.3.tar.gz
	Package f-prot-antivirus6-ws-bin: missing distfile fp-NetBSD.x86.32-ws-6.2.3.tar.gz
	Package libidea: missing distfile libidea-0.8.2b.tar.gz
	Package openssh: missing distfile openssh-7.1p1-hpn-20150822.diff.bz2
	Package uvscan: missing distfile vlp4510e.tar.Z

Otherwise, existing SHA1 digests verified and found to be the same on
the machine holding the existing distfiles (morden).  All existing
SHA1 digests retained for now as an audit trail.
   2015-08-23 16:30:43 by Thomas Klausner | Files touched by this commit (125) | Package updated
Log message:
Bump PKGREVISION for nettle shlib major bump.
   2015-08-23 16:22:10 by Thomas Klausner | Files touched by this commit (8) | Package updated
Log message:
Update to 3.1.1, now that gnutls is fixed to build with it.

NEWS for the Nettle 3.1.1 release

	This release fixes a couple of non-critical bugs.

	Bug fixes:

	* By accident, nettle-3.1 disabled the assembly code for the
	  secp_224r1 and secp_521r1 elliptic curves on all x86_64
	  configurations, making signature operations on those curves
	  10%-30% slower. This code is now re-enabled.

	* The x86_64 assembly implementation of gcm hashing has been
          fixed to work with the Sun/Oracle assembler.

	The shared library names are libnettle.so.6.1 and
	libhogweed.so.4.1, with sonames still libnettle.so.6 and
	libhogweed.so.4. It is intended to be fully binary compatible
	with nettle-3.1.

NEWS for the Nettle 3.1 release

	This release adds a couple of new features.

	The library is mostly source-level compatible with nettle-3.0.
	It is however not binary compatible, due to the introduction
	of versioned symbols, and extensions to the base64 context
	structs. The shared library names are libnettle.so.6.0 and
	libhogweed.so.4.0, with sonames libnettle.so.6 and

	Bug fixes:

	* Fixed a missing include of <limits.h>, which made the
	  camellia implementation fail on all 64-bit non-x86

	* Eliminate out-of-bounds reads in the C implementation of
	  memxor (related to valgrind's --partial-loads-ok flag).

	Interface changes:

	* Declarations of many internal functions are moved from ecc.h
	  to ecc-internal.h. The functions are undocumented, and
	  luckily they're apparently also unused by applications, so I
	  don't expect any problems from this change.

	New features:

	* Support for curve25519 and for EdDSA25519 signatures.

	* Support for "fat builds" on x86_64 and arm, where the
	  implementation of certain functions is selected at run-time
	  depending on available cpu features. Configure with
	  --enable-fat to try this out. If it turns out to work well
	  enough, it will likely be enabled by default in later

	* Support for building the hogweed library (public key
	  support) using "mini-gmp", a small but slower implementation
	  of a subset of the GMP interfaces. Note that builds using
	  mini-gmp are *not* binary compatible with regular builds,
	  and more likely to leak side-channel information.

	  One intended use-case is for small embedded applications
	  which need to verify digital signatures.

	* The shared libraries are now built with versioned symbols.
	  Should reduce problems in case a program links explicitly to
	  nettle and/or hogweed, and to gnutls, and the program and
	  gnutls expect different versions.

	* Support for "URL-safe" base64 encoding and decoding, as
          specified in RFC 4648. Contributed by Amos Jeffries.


	* New x86_64 implementation of AES, using the "aesni"
	  instructions. Autodetected in fat builds. In non-fat builds,
	  it has to be enabled explicitly with --enable-x86-aesni.

	Build system:

	* Use the same object files for both static and shared
	  libraries. This eliminates the *.po object files which were
	  confusing to some tools (as well as humans). Like before,
	  PIC code is used by default; to build a non-pic static
	  library, configure with --disable-pic --disable-shared.


	* Made type-checking hack in CBC_ENCRYPT and similar macros
	  stricter, to generate warnings if they are used with
	  functions which have a length argument smaller than size_t.