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Revision 1.31 / (download) - annotate - [select for diffs], Tue Jun 6 05:12:06 2023 UTC (2 days, 14 hours ago) by adam
Branch: MAIN
Changes since 1.30: +2 -2 lines
Diff to previous 1.30 (colored)

nettle: updated to 3.9.1

Nettle 3.9.1 release

This is a bugfix release, fixing a few bugs reported for
Nettle-3.9. The bug in the new OCB code may be exploitable for
denial of service or worse, since triggering it leads to
memory corruption. Upgrading from Nettle-3.9 to the new
version is strongly recommended.

The new version is intended to be fully source and binary
compatible with Nettle-3.6. The shared library names are and, with sonames and

Bug fixes:

* Fix OCB loop for processing messages of size 272 bytes or
  larger. Reported and fixed by Jussi Kivilinna.

* Fix alignment bug in the new x86_64 non-pclmul assembly
  implementation of ghash. Reported by Henrik Grubbström.

* Fix build-time memory leak in eccdata. Reported by Noah

Revision 1.30 / (download) - annotate - [select for diffs], Tue May 23 13:25:32 2023 UTC (2 weeks, 2 days ago) by wiz
Branch: MAIN
Changes since 1.29: +3 -3 lines
Diff to previous 1.29 (colored)

nettle: update to 3.9.

NEWS for the Nettle 3.9 release

	This release includes bug fixes, several new features, a few
	performance improvements, and one performance regression
	affecting GCM on certain platforms.

	The new version is intended to be fully source and binary
	compatible with Nettle-3.6. The shared library names are and, with sonames and

	This release includes a rewrite of the C implementation of
	GHASH (dating from 2011), as well as the plain x86_64 assembly
	version, to use precomputed tables in a different way, with
	tables always accessed in the same sequential manner.

	This should make Nettle's GHASH implementation side-channel
	silent on all platforms, but considerably slower on platforms
	without carry-less mul instructions. E.g., benchmarks of the C
	implementation on x86_64 showed a slowdown of 3 times.

	Bug fixes:

	* Fix bug in ecdsa and gostdsa signature verify operation, for
	  the unlikely corner case that point addition really is point

	* Fix for chacha on Power7, nettle's assembly used an
	  instruction only available on later processors. Fixed by
	  Mamone Tarsha.

	* GHASH implementation should now be side-channel silent on
	  all architectures.

	* A few portability fixes for *BSD.

	New features:

	* Support for the SM4 block cipher, contributed by Tianjia

	* Support for the Balloon password hash, contributed by Zoltan

	* Support for SIV-GCM authenticated encryption mode,
          contributed by Daiki Ueno.

	* Support for OCB authenticated encryption mode.

	* New exported functions md5_compress, sha1_compress,
	  sha256_compress, sha512_compress, based on patches from
	  Corentin Labbe.


	* Improved sha256 performance, in particular for x86_64 and

	* Use GMP's mpn_sec_tabselect, which is implemented in
	  assembly on many platforms, and delete the similar nettle
	  function. Gives a modest speedup to all ecc operations.

	* Faster poly1305 for x86_64 and ppc64. New ppc code
	  contributed by Mamone Tarsha.


	* New ASM_FLAGS variable recognized by configure.

	* Delete all arcfour assembly code. Affects 32-bit x86, 32-bit
	  and 64-bit sparc.

	Known issues:

	* Version 6.2.1 of GNU GMP (the most recent GMP release as of
	  this writing) has a known issue for MacOS on 64-bit ARM: GMP
	  assembly files use the reserved x18 register. On this
	  platform it is recommended to use a GMP snapshot where this
	  bug is fixed, and upgrade to a later GMP release when one
	  becomes available.

	* Also on MacOS, Nettle's testsuite may still break due to
	  DYLD_LIBRARY_PATH being discarded under some circumstances.
	  As a workaround, use


Revision 1.29 / (download) - annotate - [select for diffs], Mon Aug 1 10:08:09 2022 UTC (10 months, 1 week ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2023Q1-base, pkgsrc-2023Q1, pkgsrc-2022Q4-base, pkgsrc-2022Q4, pkgsrc-2022Q3-base, pkgsrc-2022Q3
Changes since 1.28: +3 -3 lines
Diff to previous 1.28 (colored)

nettle: updated to 3.8.1

Nettle 3.8.1 release

This is a bugfix release, fixing a few portability issues
reported for Nettle-3.8.

Bug fixes:

* Avoid non-posix m4 argument references in the chacha
  implementation for arm64, powerpc64 and s390x. Reported by
  Christian Weisgerber, fix contributed by Mamone Tarsha.

* Use explicit .machine pseudo-ops where needed in s390x
  assembly files. Bug report by Andreas K. Huettel, fix
  contributed by Mamone Tarsha.


* Implemented runtime detection of cpu features for OpenBSD on
  arm64. Contributed by Christian Weisgerber.

The new version is intended to be fully source and binary
compatible with Nettle-3.6. The shared library names are and, with sonames and

Revision 1.28 / (download) - annotate - [select for diffs], Sun Jul 3 09:46:45 2022 UTC (11 months ago) by wiz
Branch: MAIN
Changes since 1.27: +2 -2 lines
Diff to previous 1.27 (colored)

nettle: update to 3.8.

NEWS for the Nettle 3.8 release

	This release includes a couple of new features, and many
	performance improvements. It adds assembly code for two more
	architectures: ARM64 and S390x.

	The new version is intended to be fully source and binary
	compatible with Nettle-3.6. The shared library names are and, with sonames and

	New features:

	* AES keywrap (RFC 3394), contributed by Nicolas Mora.

	* SM3 hash function, contributed by Tianjia Zhang.

	* New functions cbc_aes128_encrypt, cbc_aes192_encrypt,

	  On processors where AES is fast enough, e.g., x86_64 with
	  aesni instructions, the overhead of using Nettle's general
	  cbc_encrypt can be significant. The new functions can be
	  implemented in assembly, to do multiple blocks with reduced
	  per-block overhead.

	  Note that there's no corresponding new decrypt functions,
	  since the general cbc_decrypt doesn't suffer from the same
	  performance problem.

	Bug fixes:

	* Fix fat builds for x86_64 windows, these appear to never
          have worked.


	* New ARM64 implementation of AES, GCM, Chacha, SHA1 and
	  SHA256, for processors supporting crypto extensions. Great
	  speedups, and fat builds are supported. Contributed by
	  Mamone Tarsha.

	* New s390x implementation of AES, GCM, Chacha, memxor, SHA1,
	  SHA256, SHA512 and SHA3. Great speedups, and fat builds are
	  supported. Contributed by Mamone Tarsha.

	* New PPC64 assembly for ecc modulo/redc operations,
	  contributed by Amitay Isaacs, Martin Schwenke and Alastair

	* The x86_64 AES implementation using aesni instructions has
	  been reorganized with one separate function per key size,
	  each interleaving the processing of two blocks at a time
	  (when the caller processes multiple blocks with each call).
	  This gives a modest performance improvement on some

	* Rewritten and faster x86_64 poly1305 assembly.

	Known issues:

	* Nettle's testsuite doesn't work out-of-the-box on recent
	  MacOS, due to /bin/sh discarding the DYLD_LIBRARY_PATH
	  environment variable. Nettle's test scripts handle this in
	  some cases, but currently fails the test cases that are
	  themselves written as /bin/sh scripts. As a workaround, use



	* Updated manual to current makeinfo conventions, with no
	  explicit node pointers. Generate pdf version with texi2pdf,
	  to get working hyper links.

	* Added square root functions for NIST ecc curves, as a
	  preparation for supporting compact point representation.

	* Reworked internal GCM/ghash interfaces, simplifying assembly
	  implementations. Deleted unused GCM C implementation
	  variants with less than 8-bit lookup table.

Revision 1.27 / (download) - annotate - [select for diffs], Mon Jun 7 18:57:58 2021 UTC (2 years ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2022Q2-base, pkgsrc-2022Q2, pkgsrc-2022Q1-base, pkgsrc-2022Q1, pkgsrc-2021Q4-base, pkgsrc-2021Q4, pkgsrc-2021Q3-base, pkgsrc-2021Q3, pkgsrc-2021Q2-base, pkgsrc-2021Q2
Changes since 1.26: +2 -2 lines
Diff to previous 1.26 (colored)

nettle: updated to 3.7.3

NEWS for the Nettle 3.7.3 release

This is bugfix release, fixing bugs that could make the RSA
decryption functions crash on invalid inputs.

Upgrading to the new version is strongly recommended. For
applications that want to support older versions of Nettle,
the bug can be worked around by adding a check that the RSA
ciphertext is in the range 0 < ciphertext < n, before
attempting to decrypt it.

Thanks to Paul Schaub and Justus Winter for reporting these

The new version is intended to be fully source and binary
compatible with Nettle-3.6. The shared library names are and, with sonames and

Bug fixes:

* Fix crash for zero input to rsa_sec_decrypt and
  rsa_decrypt_tr. Potential denial of service vector.

* Ensure that all of rsa_decrypt_tr and rsa_sec_decrypt return
  failure for out of range inputs, instead of either crashing,
  or silently reducing input modulo n. Potential denial of
  service vector.

* Ensure that rsa_decrypt returns failure for out of range
  inputs, instead of silently reducing input modulo n.

* Ensure that rsa_sec_decrypt returns failure if the message
  size is too large for the given key. Unlike the other bugs,
  this would typically be triggered by invalid local
  configuration, rather than by processing untrusted remote

Revision 1.26 / (download) - annotate - [select for diffs], Sun Mar 21 20:03:09 2021 UTC (2 years, 2 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2021Q1-base, pkgsrc-2021Q1
Changes since 1.25: +2 -2 lines
Diff to previous 1.25 (colored)

nettle: updated to 3.7.2

NEWS for the Nettle 3.7.2 release

This is a bugfix release, fixing a bug in ECDSA signature
verification that could lead to a denial of service attack
(via an assertion failure) or possibly incorrect results. It
also fixes a few related problems where scalars are required
to be canonically reduced modulo the ECC group order, but in
fact may be slightly larger.

Upgrading to the new version is strongly recommended.

Even when no assert is triggered in ecdsa_verify, ECC point
multiplication may get invalid intermediate values as input,
and produce incorrect results. It's trivial to construct
alleged signatures that result in invalid intermediate values.
It appears difficult to construct an alleged signature that
makes the function misbehave in such a way that an invalid
signature is accepted as valid, but such attacks can't be
ruled out without further analysis.

Thanks to Guido Vranken for setting up the fuzzer tests that
uncovered this problem.

The new version is intended to be fully source and binary
compatible with Nettle-3.6. The shared library names are and, with sonames and

Bug fixes:

* Fixed bug in ecdsa_verify, and added a corresponding test

* Similar fixes to ecc_gostdsa_verify and gostdsa_vko.

* Similar fixes to eddsa signatures. The problem is less severe
  for these curves, because (i) the potentially out or range
  value is derived from output of a hash function, making it
  harder for the attacker to to hit the narrow range of
  problematic values, and (ii) the ecc operations are
  inherently more robust, and my current understanding is that
  unless the corresponding assert is hit, the verify
  operation should complete with a correct result.

* Fix to ecdsa_sign, which with a very low probability could
  return out of range signature values, which would be
  rejected immediately by a verifier.

Revision 1.25 / (download) - annotate - [select for diffs], Thu Feb 18 10:59:09 2021 UTC (2 years, 3 months ago) by adam
Branch: MAIN
Changes since 1.24: +2 -2 lines
Diff to previous 1.24 (colored)

nettle: updated to 3.7.1

NEWS for the Nettle 3.7.1 release

This is primarily a bug fix release, fixing a couple of
problems found in Nettle-3.7.

The new version is intended to be fully source and binary
compatible with Nettle-3.6. The shared library names are and, with sonames and

Bug fixes:

* Fix bug in chacha counter update logic. The problem affected
  ppc64 and ppc64el, with the new altivec assembly code
  enabled. Reported by Andreas Metzler, after breakage in
  GnuTLS tests on ppc64.

* Support for big-endian ARM platforms has been restored.
  Fixes contributed by Michael Weiser.

* Fix build problem on OpenBSD/powerpc64, reported by Jasper
  Lievisse Adriaanse.

* Fix corner case bug in ECDSA verify, it would produce
  incorrect result in the unlikely case of an all-zero
  message hash. Reported by Guido Vranken.

New features:

* Support for pbkdf2_hmac_sha384 and pbkdf2_hmac_sha512,
  contributed by Nicolas Mora.


* Poorly performing ARM Neon code for doing single-block
  Salsa20 and Chacha has been deleted. The code to do two or
  three blocks in parallel, introduced in Nettle-3.7, is

NEWS for the Nettle 3.7 release

This release adds one new feature, the bcrypt password hashing
function, and lots of optimizations. There's also one
important change to how Nettle is configured: Fat builds are
now on by default.

The release adds PowerPC64 assembly for a few algorithms,
resulting in great speedups. Benchmarked on a Power9 machine,
speedup was 13 times for AES256-CTR and AES256-GCM, and 3.5
times for Chacha. For fat builds (now the default), the new
code is used automatically, on processors supporting the needed
instruction set extensions.

The new version is intended to be fully source and binary
compatible with Nettle-3.6. The shared library names are and, with sonames and

New features:

* Support for bcrypt, contributed by Stephen R. van den Berg.


* Much faster AES and GCM on PowerPC64 processors supporting
  the corresponding crypto extensions. Contributed by Mamone

* Speed of Chacha improved on PowerPC64, x86_64 and ARM Neon.

* Speed of Salsa20 improved on x86_64 and ARM Neon.

* Overhaul of some elliptic curve primitives, improving ECDSA
  signature speed.


* Fat builds are enabled by default on the architectures where
  it is supported (x86_64, arm and powerpc64). To disable
  runtime selection, and instead specify the processor flavor
  at configure time, you need to pass --disable-fat to the
  configure script.

Known issues:

* The ARM assembly code in this release doesn't work correctly
  on big-endian ARM systems. This will hopefully be fixed in a
  later release.


* Use a few more gmp-6.1 functions: mpn_cnd_add_n,
  mpn_cnd_sub_n, mpn_cnd_swap. Delete corresponding internal
  Nettle functions.

* Convert all assembly files to use the default m4 quote

Revision 1.24 / (download) - annotate - [select for diffs], Fri May 22 08:01:51 2020 UTC (3 years ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2020Q4-base, pkgsrc-2020Q4, pkgsrc-2020Q3-base, pkgsrc-2020Q3, pkgsrc-2020Q2-base, pkgsrc-2020Q2
Changes since 1.23: +4 -3 lines
Diff to previous 1.23 (colored)

nettle: updated to 3.6

Nettle 3.6:

This release adds a couple of new features, most notable being
support for ED448 signatures.

It is not binary compatible with earlier releases. The shared
library names are and, with
sonames and The changed
sonames are mainly to avoid upgrade problems with recent
GnuTLS versions, that depend on Nettle internals outside of
the advertised ABI. But also because of the removal of
internal poly1305 functions which were undocumented but
declared in an installed header file, see Interface changes

New features:

* Support for Curve448 and ED448 signatures. Contributed by
  Daiki Ueno.

* Support for SHAKE256 (SHA3 variant with arbitrary output
  size). Contributed by Daiki Ueno.

* Support for SIV-CMAC (Synthetic Initialization Vector) mode,
  contributed by Nikos Mavrogiannopoulos.

* Support for CMAC64, contributed by Dmitry Baryshkov.

* Support for the "CryptoPro" variant of the GOST hash
  function, as gosthash94cp. Contributed by Dmitry Baryshkov.

* Support for GOST DSA signatures, including GOST curves
  gc256b and gc512a. Contributed by Dmitry Baryshkov.

* Support for Intel CET in x86 and x86_64 assembly files, if
  enabled via CFLAGS (gcc --fcf-protection=full). Contributed
  by H.J. Lu and Simo Sorce.

* A few new functions to improve support for the Chacha
  variant with 96-bit nonce and 32-bit block counter (the
  existing functions use nonce and counter of 64-bit each),
  and functions to set the counter. Contributed by Daiki Ueno.

* New interface, struct nettle_mac, for MAC (message
  authentication code) algorithms. This abstraction is only
  for MACs that don't require a per-message nonce. For HMAC,
  the key size is fixed, and equal the digest size of the
  underlying hash function.

Bug fixes:

* Fix bug in cfb8_decrypt. Previously, the IV was not updated
  correctly in the case of input data shorter than the block
  size. Reported by Stephan Mueller, fixed by Daiki Ueno.

* Fix configure check for __builtin_bswap64, the incorrect
  check would result in link errors on platforms missing this
  function. Patch contributed by George Koehler.

* All use of old-fashioned suffix rules in the Makefiles have
  been replaced with %-pattern rules. Nettle's use of suffix
  rules in earlier versions depended on undocumented GNU make
  behavior, which is being deprecated in GNU make 4.3.

  Building with other make programs than GNU make is untested
  and unsupported. (Building with BSD make or Solaris make
  used to work years ago, but has not been tested recently).

Interface changes:

* Declarations of internal poly1305.h functions have been
  removed from the header file poly1305.h, to make it clear
  that they are not part of the advertised API or ABI.


* Building the public key support of nettle now requires GMP
  version 6.1.0 or later (unless --enable-mini-gmp is used).

* A fair amount of changes to ECC internals, with a few
  deleted and a few new fields in the internal struct
  ecc_curve. Files and functions have been renamed to more
  consistently match the curve name, e.g., ecc-256.c has been
  renamed to ecc-secp256r1.c.

* Documentation for chacha-poly1305 updated. It is no longer
  experimental. The implementation was updated to follow RFC
  8439 in Nettle-3.1, but that was not documented or announced
  at the time.

Revision 1.23 / (download) - annotate - [select for diffs], Sun Jan 26 17:32:05 2020 UTC (3 years, 4 months ago) by rillig
Branch: MAIN
CVS Tags: pkgsrc-2020Q1-base, pkgsrc-2020Q1
Changes since 1.22: +2 -2 lines
Diff to previous 1.22 (colored)

all: migrate homepages from http to https

pkglint -r --network --only "migrate"

As a side-effect of migrating the homepages, pkglint also fixed a few
indentations in unrelated lines. These and the new homepages have been
checked manually.

Revision 1.22 / (download) - annotate - [select for diffs], Sat Jul 20 22:01:57 2019 UTC (3 years, 10 months ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2019Q4-base, pkgsrc-2019Q4, pkgsrc-2019Q3-base, pkgsrc-2019Q3
Changes since 1.21: +2 -2 lines
Diff to previous 1.21 (colored)

nettle: update to 3.5.1.

NEWS for the Nettle 3.5.1 release

	The Nettle-3.5.1 corrects a packaging mistake in Nettle-3.5.
	The new directory x86_64/sha_ni were missing in the tar file,
	breaking x86_64 builds with --enable-fat, and producing worse
	performance than promised for builds with --enable-x86-sha-ni.
	Also a few unused in-progress assembly files were accidentally
	included in the tar file.

	These problems are corrected in Nettle-3.5.1. There are no
	other changes, and also the library version numbers are

NEWS for the Nettle 3.5 release

	This release adds a couple of new features and optimizations,
	and deletes or deprecates a few obsolete features. It is *not*
	binary (ABI) compatible with earlier versions. Except for
	deprecations listed below, it is intended to be fully
	source-level (API) compatible with Nettle-3.4.1.

	The shared library names are and, with sonames and

	Changes in behavior:

	* Nettle's gcm_crypt will now call the underlying block cipher
	  to process more than one block at a time. This is not a
	  change to the documented behavior, but unfortunately breaks
	  assumptions accidentally made in GnuTLS, up to and including
	  version 3.6.1.

	New features:

	* Support for CFB8 (Cipher Feedback Mode, processing a single
	  octet per block cipher operation), contributed by Dmitry

	* Support for CMAC (RFC 4493), contributed by Nikos

	* Support for XTS mode, contributed by Simo Sorce.


	* Improved performance of the x86_64 AES implementation using
	  the aesni instructions. Gives a large speedup for operations
	  processing multiple blocks at a time (including CTR mode,
	  GCM mode, and CBC decrypt, but *not* CBC encrypt).

	* Improved performance for CTR mode, for the common case of
	  16-byte block size. Pass more data at a time to underlying
	  block cipher, and fill the counter blocks more efficiently.
	  Extension to also handle GCM mode efficiently contributed
	  by Nikos Mavrogiannopoulos.

	* New x86_64 implementation of sha1 and sha256, for processors
	  supporting the sha_ni instructions. Speedup of 3-5 times on
	  affected processors.

	* Improved parameters for the precomputation of tables used
	  for ecc signatures. Roughly 10%-15% speedup of the ecdsa
	  sign operation using the secp_256r1, secp_384r1 and
	  secp_521r1 curves, and 25% speedup of ed25519 sign
	  operation, benchmarked on x86_64. Table sizes unchanged,
	  around 16 KB per curve.

	* In ARM fat builds, automatically select Neon implementation
	  of Chacha, where possible. Contributed by Yuriy M.

	Deleted features:

	* The header file des-compat.h and everything declared therein
	  has been deleted, as announced earlier. This file provided a
	  subset of the old libdes/ssleay/openssl interface for DES
	  and triple-DES. DES is still supported, via the functions
	  declared in des.h.

	* Functions using the old struct aes_ctx have been marked as
	  deprecated. Use the fixed key size interface instead, e.g.,
	  struct aes256_ctx, introduced in Nettle-3.0.

	* The header file nettle-stdint.h, and corresponding autoconf
	  tests, have been deleted. Nettle now requires that the
	  compiler/libc provides <stdint.h>.


	* Support for big-endian ARM systems, contributed by Michael

	* The programs aesdata, desdata, twofishdata, shadata and
	  gcmdata are no longer built by default. Makefile
	  improvements contributed by Jay Foad.

	* The "example" program examples/eratosthenes.c has been

	* The contents of hash context structs, and the deprecated
	  aes_ctx struct, have been reorganized, to enable later

	The shared library names are and

Revision 1.21 / (download) - annotate - [select for diffs], Thu Dec 13 10:49:38 2018 UTC (4 years, 5 months ago) by gson
Branch: MAIN
CVS Tags: pkgsrc-2019Q2-base, pkgsrc-2019Q2, pkgsrc-2019Q1-base, pkgsrc-2019Q1, pkgsrc-2018Q4-base, pkgsrc-2018Q4
Changes since 1.20: +2 -2 lines
Diff to previous 1.20 (colored)

nettle: use c99

Add c99 to USE_LANGUAGES as nettle 3.4.1 uses c99 for loop syntax, and
won't build on NetBSD 7.1 without it.

Revision 1.20 / (download) - annotate - [select for diffs], Sun Dec 9 20:11:40 2018 UTC (4 years, 5 months ago) by leot
Branch: MAIN
Changes since 1.19: +3 -3 lines
Diff to previous 1.19 (colored)

nettle: Update security/nettle to 3.4.1

This release fixes a few bugs, and makes the RSA private key
operations side channel silent. The RSA improvements are
contributed by Simo Sorce and Red Hat, and include one new
public function, rsa_sec_decrypt, see below.

All functions using RSA private keys are now side-channel
silent, meaning that they try hard to avoid any branches or
memory accesses depending on secret data. This applies both to
the bignum calculations, which now use GMP's mpn_sec_* family
of functions, and the processing of PKCS#1 padding needed for
RSA decryption.

Nettle's ECC functions were already side-channel silent, while
the DSA functions still aren't. There's also one caveat
regarding the improved RSA functions: due to small table
lookups in relevant mpn_sec_* functions in GMP-6.1.2, the
lowest and highest few bits of the secret factors p and q may
still leak. I'm not aware of any attacks on RSA where knowing
a few bits of the factors makes a significant difference. This
leak will likely be plugged in later GMP versions.

Changes in behavior:

* The functions rsa_decrypt and rsa_decrypt_tr may now clobber
  all of the provided message buffer, independent of the
  actual message length. They are side-channel silent, in that
  branches and memory accesses don't depend on the validity or
  length of the message. Side-channel leakage from the
  caller's use of length and return value may still provide an
  oracle useable for a Bleichenbacher-style chosen ciphertext
  attack. Which is why the new function rsa_sec_decrypt is

New features:

* A new function rsa_sec_decrypt. It differs from
  rsa_decrypt_tr in that the length of the decrypted message
  is given a priori, and PKCS#1 padding indicating a different
  length is treated as an error. For applications that may be
  subject to chosen ciphertext attacks, it is recommended to
  initialize the message area with random data, call this
  function, and ignore the return value. This applies in
  particular to RSA-based key exchange in the TLS protocol.

Bug fixes:

* Fix bug in pkcs1-conv, missing break statements in the
  parsing of PEM input files.

* Fix link error on the pss-mgf1-test test, affecting builds
  without public key support.

Performance regression:

* All RSA private key operations employing RSA blinding, i.e.,
  rsa_decrypt_tr, rsa_*_sign_tr, the new rsa_sec_decrypt, and
  rsa_compute_root_tr, are significantly slower. This is
  because (i) RSA blinding now use side-channel silent
  operations, (ii) blinding includes a modular inversion, and
  (iii) side-channel silent modular inversion, implemented as
  mpn_sec_invert, is very expensive. A 60% slowdown for
  2048-bit RSA keys have been measured.


* Building the public key support of nettle now requires GMP
  version 6.0 or later (unless --enable-mini-gmp is used).

The shared library names are and, with sonames still and It is intended to be fully binary compatible
with nettle-3.1.

Revision 1.19 / (download) - annotate - [select for diffs], Tue Nov 28 14:06:12 2017 UTC (5 years, 6 months ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2018Q3-base, pkgsrc-2018Q3, pkgsrc-2018Q2-base, pkgsrc-2018Q2, pkgsrc-2018Q1-base, pkgsrc-2018Q1, pkgsrc-2017Q4-base, pkgsrc-2017Q4
Changes since 1.18: +2 -2 lines
Diff to previous 1.18 (colored)

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.

Revision 1.18 / (download) - annotate - [select for diffs], Thu Jan 19 18:52:24 2017 UTC (6 years, 4 months ago) by agc
Branch: MAIN
CVS Tags: pkgsrc-2017Q3-base, pkgsrc-2017Q3, pkgsrc-2017Q2-base, pkgsrc-2017Q2, pkgsrc-2017Q1-base, pkgsrc-2017Q1
Changes since 1.17: +3 -3 lines
Diff to previous 1.17 (colored)

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

Revision 1.17 / (download) - annotate - [select for diffs], Mon Oct 3 12:28:19 2016 UTC (6 years, 8 months ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2016Q4-base, pkgsrc-2016Q4
Changes since 1.16: +3 -2 lines
Diff to previous 1.16 (colored)

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 and, with sonames still and It is intended to be fully binary compatible
	with nettle-3.1.

Revision 1.16 / (download) - annotate - [select for diffs], Mon Feb 1 13:27:36 2016 UTC (7 years, 4 months ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2016Q3-base, pkgsrc-2016Q3, pkgsrc-2016Q2-base, pkgsrc-2016Q2, pkgsrc-2016Q1-base, pkgsrc-2016Q1
Changes since 1.15: +2 -2 lines
Diff to previous 1.15 (colored)

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 and, with sonames still and It is intended to be fully binary compatible
	with nettle-3.1.

Revision 1.15 / (download) - annotate - [select for diffs], Sun Aug 23 14:22:10 2015 UTC (7 years, 9 months ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2015Q4-base, pkgsrc-2015Q4, pkgsrc-2015Q3-base, pkgsrc-2015Q3
Changes since 1.14: +1 -6 lines
Diff to previous 1.14 (colored)

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 and, with sonames still and 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 and, with sonames 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.

Revision 1.14 / (download) - annotate - [select for diffs], Fri Apr 3 18:34:14 2015 UTC (8 years, 2 months ago) by mrg
Branch: MAIN
CVS Tags: pkgsrc-2015Q2-base, pkgsrc-2015Q2
Changes since 1.13: +5 -1 lines
Diff to previous 1.13 (colored)

use --diable-assembler on armv4 systems.  they're not supported.

Revision 1.13 / (download) - annotate - [select for diffs], Tue Nov 26 09:22:19 2013 UTC (9 years, 6 months ago) by martin
Branch: MAIN
CVS Tags: pkgsrc-2015Q1-base, pkgsrc-2015Q1, pkgsrc-2014Q4-base, pkgsrc-2014Q4, pkgsrc-2014Q3-base, pkgsrc-2014Q3, pkgsrc-2014Q2-base, pkgsrc-2014Q2, pkgsrc-2014Q1-base, pkgsrc-2014Q1, pkgsrc-2013Q4-base, pkgsrc-2013Q4
Changes since 1.12: +2 -1 lines
Diff to previous 1.12 (colored)

Make it use -fPIC on NetBSD (does not build on at least sparc64 otherwise).
Bump rev.

Revision 1.12 / (download) - annotate - [select for diffs], Wed May 29 20:19:28 2013 UTC (10 years ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2013Q3-base, pkgsrc-2013Q3, pkgsrc-2013Q2-base, pkgsrc-2013Q2
Changes since 1.11: +2 -2 lines
Diff to previous 1.11 (colored)

Changes 2.7.1:
This is a bugfix release.

Bug fixes:

* 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

The following problems have been reported, but are *not* fixed
in this release:

* ARM assembly files use instruction syntax which is not
  supported by all assemblers. Workaround: Use a current
  version of GNU as, or configure with --disable-assembler.

* Configuring with --disable-static doesn't work on windows.

The libraries are intended to be binary compatible with
nettle-2.2 and later. The shared library names are and, with sonames still and

Revision 1.11 / (download) - annotate - [select for diffs], Sat May 11 16:55:54 2013 UTC (10 years ago) by riastradh
Branch: MAIN
Changes since 1.10: +7 -1 lines
Diff to previous 1.10 (colored)

Fix cross-build of security/nettle by setting CC_FOR_BUILD.

Revision 1.10 / (download) - annotate - [select for diffs], Mon Apr 29 16:42:24 2013 UTC (10 years, 1 month ago) by adam
Branch: MAIN
Changes since 1.9: +2 -2 lines
Diff to previous 1.9 (colored)

NEWS for the 2.7 release

        This release includes an implementation of elliptic curve
        cryptography (ECC) and optimizations for the ARM architecture.
        This work was done at the offices of South Pole AB, and
        generously funded by the .SE Internet Fund.

        Bug fixes:

        * Fixed a bug in the buffer handling for incremental SHA3
          hashing, with a possible buffer overflow. Patch by Edgar
          E. Iglesias.

        New features:

        * Support for ECDSA signatures. Elliptic curve operations over
          the following curves: secp192r1, secp224r1, secp256r1,
          secp384r1 and secp521r1, including x86_64 and ARM assembly
          for the most important primitives.

        * Support for UMAC, including x86_64 and ARM assembly.

        * Support for 12-round salsa20, "salsa20r12", as specified by
          eSTREAM. Contributed by Nikos Mavrogiannopoulos.


        * ARM assembly code for several additional algorithms,
          including AES, Salsa20, and the SHA family of hash

        * x86_64 assembly for SHA256, SHA512, and SHA3. (SHA3 assembly
          was included in the 2.6 release, but disabled due to poor
          performance on some AMD processors. Hopefully, that
          performance problem is fixed now).

        The ARM code was tested and benchmarked on Cortex-A9. Some of
        the functions use "neon" instructions. The configure script
        decides if neon instructions can be used, and the command line
        options --enable-arm-neon and --disable-arm-neon can be used
        to override its choice. Feedback appreciated.

        The libraries are intended to be binary compatible with
        nettle-2.2 and later. The shared library names are and, with sonames still and

Revision 1.9 / (download) - annotate - [select for diffs], Fri Mar 15 18:22:03 2013 UTC (10 years, 2 months ago) by drochner
Branch: MAIN
CVS Tags: pkgsrc-2013Q1-base, pkgsrc-2013Q1
Changes since 1.8: +3 -3 lines
Diff to previous 1.8 (colored)

update to 2.6
-support for PKCS #5 PBKDF2, SHA3, GOST R 34.11-94
-minor improvements

Revision 1.8 / (download) - annotate - [select for diffs], Tue Oct 23 18:16:37 2012 UTC (10 years, 7 months ago) by asau
Branch: MAIN
CVS Tags: pkgsrc-2012Q4-base, pkgsrc-2012Q4
Changes since 1.7: +1 -3 lines
Diff to previous 1.7 (colored)

Drop superfluous PKG_DESTDIR_SUPPORT, "user-destdir" is default these days.

Revision 1.7 / (download) - annotate - [select for diffs], Thu Jan 26 23:00:22 2012 UTC (11 years, 4 months ago) by sbd
Branch: MAIN
CVS Tags: pkgsrc-2012Q3-base, pkgsrc-2012Q3, pkgsrc-2012Q2-base, pkgsrc-2012Q2, pkgsrc-2012Q1-base, pkgsrc-2012Q1
Changes since 1.6: +2 -1 lines
Diff to previous 1.6 (colored)

Use SET_LIBDIR to get rid of lib64

Revision 1.6 / (download) - annotate - [select for diffs], Tue Jan 17 21:43:21 2012 UTC (11 years, 4 months ago) by sbd
Branch: MAIN
Changes since 1.5: +1 -2 lines
Diff to previous 1.5 (colored)

Convert packages with add --libdir=* to CONFIGURE_ARGS to use

Revision 1.5 / (download) - annotate - [select for diffs], Thu Sep 8 20:22:13 2011 UTC (11 years, 9 months ago) by wiz
Branch: MAIN
CVS Tags: pkgsrc-2011Q4-base, pkgsrc-2011Q4, pkgsrc-2011Q3-base, pkgsrc-2011Q3
Changes since 1.4: +4 -2 lines
Diff to previous 1.4 (colored)

Update to 2.4:

NEWS for the 2.4 release

	This is a bugfix release only. It turned out ripemd160 in the
	2.3 release was broken on all big-endian systems, due to a
	missing include of config.h. nettle-2.4 fixes this.

	The library is intended to be binary compatible with
	nettle-2.2 and nettle-2.3. The shared library names are and, with sonames still and

NEWS for the 2.3 release

	* Support for the ripemd-160 hash function.

	* Generates and installs nettle.pc and hogweed.pc files, for
          use with pkg-config. Feedback appreciated. For projects
          using autoconf, the traditional non-pkg-config ways of
          detecting libraries, and setting LIBS and LDFLAGS, is still

	* Fixed a bug which made the testsuite fail in the GCM test on
	  certain platforms. Should not affect any documented features
	  of the library.

	* Reorganization of the code for the various Merkle-Damg
	  hash functions. Some fields in the context structs for md4,
	  md5 and sha1 have been renamed, for consistency.
	  Applications should not peek inside these structs, and the
	  ABI is unchanged.

	* In the manual, fixed mis-placed const in certain function

	The library is intended to be binary compatible with
	nettle-2.2. The shared library names are and, with sonames still and

Revision 1.4 / (download) - annotate - [select for diffs], Mon Aug 22 15:09:21 2011 UTC (11 years, 9 months ago) by wiz
Branch: MAIN
Changes since 1.3: +3 -3 lines
Diff to previous 1.3 (colored)

Update to 2.2. Update LICENSE (see below).

NEWS for the 2.2 release

	Licensing change:

	* Relicensed as LGPL v2.1 or later (user's option).

	* Replaced blowfish and serpent implementation. New code is
          based on the LGPLed code in libgcrypt.

	New features:

	* Support for Galois/Counter Mode (GCM).

	* New interface for enumerating (most) available algorithms,
	  contributed by Daniel Kahn Gillmor.

	* New tool nettle-hash. Can generate hash digests using any
	  supported hash function, with output compatible with md5sum
	  and friends from GNU coreutils. Checking (like md5sum -c)
	  not yet implemented.

	Bug fixes:

	* The old serpent code had a byte order bug (introduced by
	  yours truly about ten years ago). New serpent implementation
	  does not interoperate with earlier versions of nettle.

	* Fixed ABI-dependent libdir default for Linux-based systems
	  which do not follow the Linux File Hierarchy Standard, e.g.,
	  Debian GNU/Linux.


	* x86_64 implemention of serpent.

	* x86_64 implemention of camellia.

	* Optimized memxor using word rather than byte operations.
          Both generic C and x86_64 assembler.

	* Eliminated a memcpy for in-place CBC decrypt.


	* In command line tools, no longer support -? for requesting
          help, since using it without shell quoting is a dangerous
          habit. Use long option --help instead.

	The shared library names are and, with sonames and

Revision 1.3 / (download) - annotate - [select for diffs], Fri May 6 19:30:13 2011 UTC (12 years, 1 month ago) by alnsn
Branch: MAIN
CVS Tags: pkgsrc-2011Q2-base, pkgsrc-2011Q2
Changes since 1.2: +2 -1 lines
Diff to previous 1.2 (colored)

pass --libdir to ./configure to fix lib64 vs lib confusion on linux

Revision 1.2 / (download) - annotate - [select for diffs], Tue Apr 26 09:39:02 2011 UTC (12 years, 1 month ago) by adam
Branch: MAIN
Changes since 1.1: +2 -2 lines
Diff to previous 1.1 (colored)

Actually, prefer gm4

Revision / (download) - annotate - [select for diffs] (vendor branch), Tue Apr 26 08:59:33 2011 UTC (12 years, 1 month ago) by adam
Branch: TNF
CVS Tags: pkgsrc-base
Changes since 1.1: +0 -0 lines
Diff to previous 1.1 (colored)

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.

Revision 1.1 / (download) - annotate - [select for diffs], Tue Apr 26 08:59:33 2011 UTC (12 years, 1 month ago) by adam
Branch: MAIN

Initial revision

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