NEWS 18.2 KB
Newer Older
1 2
NEWS for the 2.5 release

3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
	This release includes important portability fixes for Windows
	and MacOS. There are also a few new features.
	
	* Warning: The undocumented, internal, function
	  pkcs1_signature_prefix is changed. Since this is an internal
	  function, this is not considered a change of ABI or API.
	  Programs explicitly using this function will break.

	New features:

	* Support for the salsa20 block cipher, including x86_64
          assembler. Originally contributed by Simon Josefsson, based
          on the reference implementation, then further optimized.

	* Tentative interface for timing-resistant RSA functions,
          contributed by Nikos Mavrogiannopoulos.

	* A more general interface for PKCS#1 signatures, taking the
          input in the form of a "DigestInfo". Suggested by Nikos
          Mavrogiannopoulos.

	Miscellaneous:
	
26
	* Various portability fixes for MacOS and M$ Windows. A lot of
Niels Möller's avatar
Niels Möller committed
27
	  this work done by Martin Storsjö.
28 29

	* In particular, Nettle now hopefully works on 64-bit Windows
30
	  builds, "W64", including the x86_64 assembly code.
31

32 33 34
	* Documentation and example programs for the base16 and base64
	  functions. Was contributed by Jeronimo Pellegrini back in
	  2006, but unfortunately forgotten until now.
35 36 37 38 39 40 41 42 43 44 45 46 47

	* The nettle repository has been migrated from cvs to git,
	  with a public repository at
	  http://git.lysator.liu.se/nettle. To make it independent of
	  the LSH repository, a few files have been moved around.
	  While at it, files have also been converted from latin-1 to
	  utf-8.

	The libraries are intended to be binary compatible with
	nettle-2.2 and later. The shared library names are
	libnettle.so.4.4 and libhogweed.so.2.2, with sonames still
	libnettle.so.4 and libhogweed.so.2

Niels Möller's avatar
Niels Möller committed
48 49 50 51 52 53 54 55 56 57 58
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
	libnettle.so.4.3 and libhogweed.so.2.1, with sonames still
	libnettle.so.4 and libhogweed.so.2.
	
Niels Möller's avatar
Niels Möller committed
59 60
NEWS for the 2.3 release

Niels Möller's avatar
Niels Möller committed
61
	* Support for the ripemd-160 hash function.
Niels Möller's avatar
Niels Möller committed
62

Niels Möller's avatar
Niels Möller committed
63 64 65 66 67 68 69 70 71 72
	* 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
          recommended.

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

Niels Möller's avatar
Niels Möller committed
73
	* Reorganization of the code for the various Merkle-Damgård
Niels Möller's avatar
Niels Möller committed
74 75 76 77 78 79 80 81 82 83 84 85
	  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
          prototypes.

	The library is intended to be binary compatible with
	nettle-2.2. The shared library names are libnettle.so.4.2 and
	libhogweed.so.2.1, with sonames still libnettle.so.4 and
	libhogweed.so.2.
Niels Möller's avatar
Niels Möller committed
86

Niels Möller's avatar
Niels Möller committed
87 88
NEWS for the 2.2 release

89 90
	Licensing change:
     	
Niels Möller's avatar
Niels Möller committed
91
	* Relicensed as LGPL v2.1 or later (user's option).
Niels Möller's avatar
Niels Möller committed
92

93 94 95 96 97
	* Replaced blowfish and serpent implementation. New code is
          based on the LGPLed code in libgcrypt.

	New features:

Niels Möller's avatar
Niels Möller committed
98
	* Support for Galois/Counter Mode (GCM).
99 100 101 102 103

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

	* New tool nettle-hash. Can generate hash digests using any
Niels Möller's avatar
Niels Möller committed
104 105 106
	  supported hash function, with output compatible with md5sum
	  and friends from GNU coreutils. Checking (like md5sum -c)
	  not yet implemented.
107 108 109 110 111 112 113

	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.

Niels Möller's avatar
Niels Möller committed
114 115 116
	* Fixed ABI-dependent libdir default for Linux-based systems
	  which do not follow the Linux File Hierarchy Standard, e.g.,
	  Debian GNU/Linux.
117 118

	Optimizations:
Niels Möller's avatar
Niels Möller committed
119
	
Niels Möller's avatar
Niels Möller committed
120
	* x86_64 implemention of serpent.
121 122 123

	* x86_64 implemention of camellia.

Niels Möller's avatar
Niels Möller committed
124 125
	* Optimized memxor using word rather than byte operations.
          Both generic C and x86_64 assembler.
Niels Möller's avatar
Niels Möller committed
126

Niels Möller's avatar
Niels Möller committed
127 128
	* Eliminated a memcpy for in-place CBC decrypt.
	
129 130
	Miscellaneous:

Niels Möller's avatar
Niels Möller committed
131 132 133
	* 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.
Niels Möller's avatar
Niels Möller committed
134

135 136 137 138
	The shared library names are libnettle.so.4.1 and
	libhogweed.so.2.1, with sonames libnettle.so.4 and
	libhogweed.so.2.

Niels Möller's avatar
Niels Möller committed
139
NEWS for the 2.1 release
Niels Möller's avatar
Niels Möller committed
140 141

	*Important*: this release breaks source and binary
Niels Möller's avatar
Niels Möller committed
142 143 144
	compatibility for the digital signature functions, and for the
	DES and BLOWFISH ciphers which have weak keys.

Niels Möller's avatar
Niels Möller committed
145 146 147
	Incompatible changes:

	* The functions rsa_md5_sign, rsa_sha1_sign and
Niels Möller's avatar
Niels Möller committed
148
          rsa_sha256_sign, and the corresponding _digest variants, now
Niels Möller's avatar
Niels Möller committed
149 150 151 152 153 154 155
          have a return value which callers should check. The functions
          return failure if the key is too small for the type of
          signature.

	* The functions dsa_sign and dsa_verify are renamed to
          dsa_sha1_sign and dsa_sha1_verify. The _-digest variants are
          renamed similarly. These functions now have a return value
Niels Möller's avatar
Niels Möller committed
156
          which callers should check, and they return failure if the
Niels Möller's avatar
Niels Möller committed
157 158
          number q is not of the appropriate size.

159 160 161 162 163 164 165 166 167 168 169
	* The return value from des_set_key, des3_set_key and
	  blowfish_set_key now indicates whether or not the given key
	  is weak. But in either case, the key setup is done, and
	  applications that don't care about weak keys can ignore the
	  return value.

	  The incompatible part of this change is that enum des_error
	  and enum blowfish_error has been deleted, and so has the
	  status attribute in struct des_ctx, struct des3_ctx, and
	  struct blowfish_ctx.

170 171 172 173
	The shared library names are libnettle.so.4.0 and
	libhogweed.so.2.0, with sonames libnettle.so.4 and
	libhogweed.so.2.

Niels Möller's avatar
Niels Möller committed
174 175
	Other changes:

176 177
	* Support for the Camellia block cipher, including an
          assembler implementation for x86_32.
Niels Möller's avatar
Niels Möller committed
178 179 180 181

	* New function aes_invert_key, useful for applications that
	  need both encryption and decryption using the same AES key.
	  
182 183 184 185 186
	* des_set_key and des3_set_key no longer check the key parity
	  bits. Parity bits are silently ignored. A new function
	  des_check_parity is provided, for applications that care
	  about the DES parity bits.

Niels Möller's avatar
Niels Möller committed
187 188 189 190 191 192 193
	* Support for sha224, sha384 and sha512.

	* Support for digital signatures using rsa-sha512 and
          dsa-sha256. Due to lack of official test vectors and interop
          testing, this support should be considered somewhat
          experimental.

Niels Möller's avatar
Niels Möller committed
194 195 196 197 198
	* Key generation for RSA and DSA changed to use Maurer's
	  algorithm to generate provably prime numbers (as usual, the
	  mathematical proof does not guaranteee that the
	  implementation is bug free).
	  
Niels Möller's avatar
Niels Möller committed
199 200 201 202
	* x86_64 assembler implementation actually included in the
	  distribution (was accidentally left out in nettle-2.0).

	* Configure script now detects if the compiler uses a 32-bit
203
          or 64-bit ABI on x86_64 (prevously did this for sparc only).
Niels Möller's avatar
Niels Möller committed
204
          Also sets the default location for installing libraries
Niels Möller's avatar
Niels Möller committed
205
          (libdir) depending on system type and the ABI used.
Niels Möller's avatar
Niels Möller committed
206 207 208 209 210 211 212 213 214 215 216 217

	* Added the nettle and gmp libraries as dependencies when
          linking shared library libhogweed.so. On systems using
          shared libraries where such dependencies work (in
          particular, ELF systems), it is sufficient to link
          applications with -lhogweed. For static linking -lhogweed
          -lnettle -lgmp is still required.

	* The program pkcs1-conv is extended to also handle dsa keys.
          Contributed by Magnus Holmgren.

	* Slightly improved sha1 performance on x86.
218

Niels Möller's avatar
Niels Möller committed
219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267
NEWS for the 2.0 release

	This release breaks binary compatibility by splitting the
	library into two. Some other smaller changes that are not
	backwards compatible are also done at the same time.

	* The nettle library is split into two libraries, libnettle
	  and libhogweed. libnettle contains the symmetric crypto
	  algorithms that don't depend on GMP, while libhogweed
	  contains the public key algorithms that depend on GMP.
	  Using a single library worked fine with static linking, but
	  not with dynamic linking. Consider an application that uses
	  nettle and which doesn't use any public key cryptography. If
	  this application is linked dynamically to nettle, it would
	  have to be linked also with GMP if and only if public key
	  support was enabled when the nettle library was installed.

	  The library names are libnettle.so.3.0 and
	  libhogweed.so.1.0, with sonames libnettle.so.3 and
	  libhogweed.so.1.

	* Function typedefs have been changed to non-pointer types.
	  E.g, the

	    typedef void (nettle_hash_init_func *)(void *ctx);

	  of previous versions is replaced by

	    typedef void (nettle_hash_init_func)(void *ctx);

	  This makes it possible to use the type when declaring
	  functions, like

	    nettle_hash_init_func foo_hash_init;

	    void foo_hash_init(void *ctx) { ... }

	* Changes to the yarrow256 interface. The automatic seed file
	  generation, and the seed_file member in struct
	  yarrow256_ctx, has been removed. To generate a new seed
	  file, use yarrow256_random. The function
	  yarrow256_force_reseed has been replaced by the two
	  functions yarrow256_fast_reseed and yarrow256_slow_reseed,
	  which were previously static. This interface change makes it
	  easier to mix in the current content of the seed file before
	  overwriting it with newly generated data.

	Other changes:

268 269 270 271
	* Nettle manual now contributed to the public domain, to
          enable remixing into documentation of programs that use
          Nettle.	  

Niels Möller's avatar
Niels Möller committed
272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287
	* The sexp-conv program preserves comments when using the
	  advanced syntax for output. Optionally locks the output
	  file.

	* The base64 decoder recognizes ASCII FF (form feed) and VT
          (vertical tab) as white space.

	* New x86_64 implementations of AES and SHA1. On a 2.2 GHz
          opteron, SHA1 was benchmarked at 250 MByte/s, and AES-128 at
          110 MByte/s.

	* Performance of AES increased by 20-30% on x86.

	* New programs in the examples directory: erathostenes and
          next-prime.
	
Niels Möller's avatar
Niels Möller committed
288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326
NEWS for the 1.15 release

	Added support for PKCS#1 style RSA signatures using SHA256,
	according to RFC 3447. Currently lacks interoperability
	testing.
	
	Header files are now C++ aware, so C++ programs using Nettle
	should now use plain

	  #include <nettle/foo.h>

	rather than

	  #extern "C" {
	  #include <nettle/foo.h>
	  }

	as was the recommendation for the previous version. This
	breaks source-level compatibility with C++, even though
	there's full binary compatibility.

	The file rfc1750.txt (which is considered non-free by debian)
	has been removed from the distribution. The file was used as input
	for the Yarrow testcase, and has been replaced by the short
	story "The Gold-bug" by Edgar Allan Poe. Anyway, RFC 1750 is
	obsoleted by RFC 4086.

	Fixes for Darwin shared library support, contributed by Grant
	Robinsson.

	Example programs now use a supplied getopt.c.

	Configure tests for assemblers with a logarithmic .align
	directive.

	The library is intended to be upwards binary compatible with
	earlier versions. The library name is libnettle.so.2.6, soname
	is still libnettle.so.2.
		
327 328
NEWS for the 1.14 release

Niels Möller's avatar
Niels Möller committed
329 330 331
	Experimental support for reading keys in PKCS#1 ASN1/DER
	format, and a new command line tool pkcs1-conv.
	
332 333
	Improved MD5 performance on x86.

Niels Möller's avatar
Niels Möller committed
334 335
	Fixed support for sparc64.

336 337 338 339 340 341 342 343 344
	Reorganized AES code. Better performance for all three
	implementations (C, x86 assembler, sparc assembler).

	New sparc assembler for arcfour. Compared to the code
	generated by gcc, the new code is about 25% faster on old
	sparcs, and 6 times faster on ultrasparc.

	Replaced the internal function nettle_mpz_from_octets with a
	call to mpz_import, if available in the installed GMP library.
Niels Möller's avatar
Niels Möller committed
345 346 347 348 349 350 351 352 353

	More Makefile fixes; it now seems to work to build with
	the the make programs on Solaris and FreeBSD (although
	--disable-dependency-tracking is required for the latter).

	The library is intended to be binary compatible with earlier
	versions. The library name is libnettle.so.2.5, soname is
	still libnettle.so.2.

Niels Möller's avatar
Niels Möller committed
354 355 356 357 358
NEWS for the 1.13 release

	Fixed problem with broken m4 on bsd, which resulted in
	corrupted x86 assembler for sha1.

Niels Möller's avatar
Niels Möller committed
359 360 361 362 363 364 365
	Nettle probably works on windows: I've been able to cross
	compile it with ./configure --host=i586-mingw32msvc (without
	public-key support), and the testsuite binaries seem to run
	fine in Wine.

	Implemented CTR mode.

Niels Möller's avatar
Niels Möller committed
366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381
	Improved sha1 performance on x86.

	Configure check to figure out if symbols in assembler files
	need a leading underscore.

	Improved benchmark program. Displays cycles per byte and block,
	and compares with openssl (if openssl is installed).
	
	Terminating newline in output from sexp-conv --hash.

	The library is intended to be binary compatible with earlier
	versions. The library name is libnettle.so.2.4. However, the
	interface for the internal function _nettle_sha1_compress has
	changed; any program that calls this function directly will
	break.

382 383 384 385 386 387 388
NEWS for the 1.12 release
	
	Fixed a bug in the configure script.

	Updated the description of aes_set_encrypt_key and
	aes_set_decrypt_key in the manual.

389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414
NEWS for the 1.11 release

	Nettle no longer uses automake. Side effects:

	  * Dependency tracking is enabled only for gcc-3 (help with
	    supporting dependency tracking with other compilers is
	    appreciated).
	  
	  * Makefile compatibility with make programs other than GNU
	    make is mostly unknown, please report any problems.

	Support for arctwo.

	Fixes to the libdes compatibility code. Declarations should
	now match openssl/libdes better. des_cbc_cksum pads
	input with NUL's, if it's not an integral number of blocks (in
	general, such unreversible padding is a bad idea).

	By default, also the static library is compiled as position
	independent code. This is needed on some systems to make it
	possible to link nettle into a dynamically loaded module. Use
	the configure flag --disable-pic if this is not desired.

	Stricter constness typing for the sexp_iterator_assoc and
	sexp_iterator_check_types arguments.

Niels Möller's avatar
Niels Möller committed
415 416
	Minor tweaks of arcfour on x86 cpu:s, to speed it up on older
	x86 variants such as PII and PPro.
417

Niels Möller's avatar
Niels Möller committed
418 419
	The shared library is intended to be binary compatible with
	nettle-1.8 - nettle-1.10. Only the minor version number of the
Niels Möller's avatar
Niels Möller committed
420 421
	shared library is increased. The soname is still
	libnettle.so.2.
Niels Möller's avatar
Niels Möller committed
422

Niels Möller's avatar
Niels Möller committed
423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440
NEWS for the 1.10 release

	Nettle should now compile also on Tru64, Darwin, FreeBSD and
	Windows. (The only tested windows build uses the rntcl rsh
	wrapper to run the command line M$ C compiler "cl". See
	http://pike.ida.liu.se for those tools, I don't know all
	details about the Pike team's windows setup).

	There are some known testsuite failures, on Windows and on one
	of the xenofarm HPUX machines, see
	http://www.lysator.liu.se/~nisse/xeno-lsh/latest.html. Help
	tracking these down is appreciated.

	There are no new features.
	
	This release is intended to be binary compatible with
	nettle-1.8 and nettle-1.9.
	
441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460
NEWS for the 1.9 release

	Optimized C implementation of arcfour. Optimized x86
	implementations of arcfour and sha1.

	Improved benchmark program.
	
	Fixed bug in the rsa-encrypt example program.

	Fixed bug in make install, some of the header files were
	forgotten.
	
	Portability fixes. Fixes to make Nettle compile on systems
	without gmp. This version has been tested on GNU/Linux,
	Solaris, HPUX and AIX.

	The shared library is intended to be binary compatible with
	nettle-1.8. Only the minor version number of the shared
	library is increased.

Niels Möller's avatar
Niels Möller committed
461 462
NEWS for the 1.8 release

Niels Möller's avatar
Niels Möller committed
463 464 465 466
	New example programs, demonstrating encrypting and decrypting
	files using RSA, and random sessions keys for bulk encryption
	and message authentication.

Niels Möller's avatar
Niels Möller committed
467 468 469 470
	Support for systems that don't have alloca. On such systems,
	some of Nettle's functions have arbitrary limits applied to
	their input.

Niels Möller's avatar
Niels Möller committed
471 472 473
	Uses AX_CREATE_STDINT_H, to support systems without
	inttypes.h.

Niels Möller's avatar
Niels Möller committed
474 475
	Support for the md2 and md4 hash functions.
	 
Niels Möller's avatar
Niels Möller committed
476
	New name mangling, to reduce the risk of link collisions. All
Niels Möller's avatar
Niels Möller committed
477
	functions (except memxor) now use a nettle_ or _nettle_ prefix
Niels Möller's avatar
Niels Möller committed
478
	when seen by the linker. For most functions, the header file
Niels Möller's avatar
Niels Möller committed
479 480
	that declares a function also uses #define to provide a
	shorter more readable name without the prefix.
Niels Möller's avatar
Niels Möller committed
481

Niels Möller's avatar
Niels Möller committed
482 483
	The shared library soname for this version is libnettle.so.2.
	
484 485
NEWS for the 1.7 release

Niels Möller's avatar
Niels Möller committed
486 487 488
	Implemented DSA.

	Renamed RSA functions for consistency. Now it's
489
	rsa_public_key_init, not rsa_init_public_key, etc.
Niels Möller's avatar
Niels Möller committed
490 491 492 493 494 495 496 497 498 499 500 501 502 503 504

	Both RSA and DSA now have sign/verify functions that take the
	hash digest as argument.

	A rewritten and much more powerful sexp-conv program.

	Other changes to the sexp code, in particular updating it to
	the latest SPKI draft.

	Building nettle as a shared library (ELF only) seems to work.
	The version number is increased, so the library "soname" for
	this release is "libnettle.so.1".

	Bugfixes. Fixes for build and portability problems.

Niels Möller's avatar
Niels Möller committed
505 506
NEWS for the 1.6 release

Niels Möller's avatar
Niels Möller committed
507 508 509 510 511 512
	Optimized assembler implementations of aes, for sparc and x86.

	The aes interface has changed slightly. The function
	aes_set_key is no more. Instead one has to use
	aes_set_encrypt_key or aes_set_decrypt_key. Sorry about that. 

Niels Möller's avatar
Niels Möller committed
513 514 515 516 517 518 519 520 521 522 523
	New example programs, rsa-keygen, rsa-sign and rsa-verify,
	located in the examples directory.

	New configure option --enable-shared, which builds a shared
	library. Not tested.

	New experimental features, including sexp parsing and
	formatting, and changes to base64 encoding and decoding. The
	interfaces to these functions are subject to change, and are
	documented only in the source code.
	
Niels Möller's avatar
Niels Möller committed
524 525
NEWS for the 1.5 release

Niels Möller's avatar
Niels Möller committed
526
	RSA support. Key generation and signatures.
Niels Möller's avatar
Niels Möller committed
527
	
Niels Möller's avatar
Niels Möller committed
528
	Support for HMAC (RFC-2104).
Niels Möller's avatar
Niels Möller committed
529

Niels Möller's avatar
Niels Möller committed
530 531 532 533
	An implementation of the Yarrow-256 PRNG.

	New sections in the manual.
	
Niels Möller's avatar
Niels Möller committed
534 535 536 537 538
	Changed the interface for hash functions. The md5_digest
	function is now equivalent to the old sequence of md5_final,
	md5_digest, md5_init, and similarly for the other hashing
	algorithms. This makes the interface simpler.

Niels Möller's avatar
Niels Möller committed
539 540 541 542
NEWS for the 1.0 release

	Fixed twofish bug spotted by Jean-Pierre Stierlin.

Niels Möller's avatar
Niels Möller committed
543 544
	Added des3 and cbc.
	
Niels Möller's avatar
Niels Möller committed
545 546 547
	New RFC-1321-like interface in nettle/md5-compat.h, suggested
	by Assar Westerlund.

Niels Möller's avatar
Niels Möller committed
548
	New libdes-style compatibility interface in nettle/des-compat.h.