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NEWS
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libxcrypt NEWS -- history of user-visible changes.
Please send bug reports, questions and suggestions to
<https://github.com/besser82/libxcrypt/issues>.
Version 4.1.3
Version 4.1.2
* Add optional 'check-valgrind' target to the Makefile.
* Replace crypt-sha{256,512}.c with an implementation in the Public
Domain.
* Add alias man-pages for other crypt functions.
* Add configure option --disable-failure-tokens, which causes crypt
and crypt_r to return NULL on failure, as crypt_rn and crypt_ra do,
instead of a special "failure token". Using this option improves
compatibility with programs written on the assumption that, like
most C library functions, crypt and crypt_r will return NULL on
failure; but it breaks compatibility with programs that assume these
functions never return NULL. We're not sure which type of program
is more common. Please let us know if you encounter either.
* Improved handling of out-of-range cost parameters in gensalt.
The behavior is now:
- for hashes with a fixed cost parameter (DES/trad, DES/big, NTHASH,
MD5/bsd), crypt_gensalt only accepts 0 as the rounds argument.
- for hashes with a linear cost parameter (DES/bsdi, MD5/sun, SHA1,
SHA256, SHA512), crypt_gensalt accepts 0 or any value in the range
[1, ULONG_MAX] and clips it to the actual valid range for the hash
function, if necessary. In the case of DES/bsdi, even numbers
become odd, as well.
- for hashes with an exponential cost parameter (bcrypt),
crypt_gensalt only accepts 0 or a value in the actual valid range.
- the documented valid range for SHA1 is now [4, 4294967295] instead
of [1, 4294967295].
- all of this is tested.
Version 4.1.1
* --enable-hashes now supports additional groups of hashing methods:
'freebsd', 'netbsd', 'openbsd', 'osx', and 'solaris', which select
the hashes historically supported on those operating systems.
* Predictable behavior when arguments to crypt() are NULL or invalid
(issue #15).
* Hash formats $5, $6, and $md5 once again allow an explicit rounds
parameter specifying the default number of rounds (issue #16).
* The library no longer uses swapcontext(), for ease of debugging and
better compatibility with hardening mechanisms like Intel CET
(issue #18).
* Can now be built with versions of GNU ld older than 2.26.2.
* crypt_gensalt_ra no longer leaks memory on failure.
Version 4.1.0
* Fix spelling of SUSE.
* Lower the minimum required automake version to 1.14.
* Fix build with USE_SWAPCONTEXT turned off.
* Extend --enable-weak-hashes configure option to accept optional
"glibc" parameter. When specified, it enables only those of
weak hashes that are supported by historic versions of the
GNU libc.
* Fix the leak of obtained random bytes.
* Check expected output strings for deterministic methods.
* Fix memory leak in crypt_sha1_rn.
* Fix read of random bytes out of bounds in gensalt_sha1_rn.
* Make it possible to disable individual hashes at configure time.
The default is --enable-hashes=all. --enable-hashes=strong is the
equivalent of the old --disable-weak-hashes. You could even do
--enable-hashes=bcrypt,des to get a binary-compatible libcrypt.so.1
that still supports almost nothing other than bcrypt.
* Make salt validation pickier.
* Replace crypt-sunmd5.c with BSD-licensed cleanroom reimplementation.
* Make crypt_gensalt for $sha1 deterministic.
* Fix incorrect output-size computation in crypt_sha1_rn.
* Add docs for SHA1, MD5/Sun, NTHASH.
* Introduce CRYPT_GENSALT_IMPLEMENTS_* feature test macros.
* Install libcrypt.pc symlink along with libxcrypt.pc.
* Extend --enable-obsolete-api configure option.
Make vendor specific parts of compatibility ABI that are enabled by
--enable-obsolete-api option configurable.
This allows vendors to enable only those parts of compatibility ABI
that are relevant to them.
* Extend overall test coverage.
Version 4.0.1
* Fixes for GCC v8.x
* Add symbol version for riscv64
* Fixed an uninitialized value in test-crypt-badsalt
Version 4.0.0
* Full binary backward compatibility with glibc libcrypt; all programs
compiled with glibc libcrypt, including vendor-patched versions that
include the Openwall extensions, should work with this libcrypt
(however, programs compiled against this libcrypt will NOT work with
glibc libcrypt).
* struct crypt_data is now only 32kB (from 128kB), and divided into a
public-API section and a properly opaque internal section.
* New feature: supplying a null pointer as the "prefix" argument to
any of the crypt_gencrypt functions will cause it to select the best
available hash function (in this release, bcrypt in mode 'a').
CAUTION: it must be a null pointer, not an empty string. If you
supply an empty string, that selects DES, which is the *worst*
available hash function.
* New feature: supplying a null pointer as the "rbytes" argument to
any of the crypt_gencrypt functions will cause it to acquire random
bytes from the operating system.
* The legacy functions bigcrypt, fcrypt, encrypt, encrypt_r,
setkey, and setkey_r are no longer available for use by new programs.
All of these (except fcrypt, which was just another name for crypt)
force the use of DES, which is no longer safe for any application.
* New configure option --disable-obsolete-api removes the above
functions from the library. Since this breaks compatibility with
glibc's libcrypt, when this option is used the shared library will
be libcrypt.so.2 instead of libcrypt.so.1, and all of the
compatibility symbol versions for the crypt* functions will be
omitted. This option is the default on all operating systems where
there is no GNU C Library to be compatible with.
* New configure option --disable-weak-hashes removes all support for
DES and MD5 hashes from the library. This option implies
--disable-obsolete-api, and will prevent DES and MD5 password hashes
from being *verified* -- accounts with such hashes are effectively
locked. It is intended for use in high-security new installations.
* Sensitive intermediate data is now thoroughly scrubbed from the
stack and CPU registers before the crypt functions return to their
callers.
* UFC-crypt has been replaced with FreeSec; this enables the reduction in
size of crypt_data, and adds full support for BSD extended DES hashes.
* Extensive code cleanup and portability work. The static library
should now be buildable with any C99 compiler, although some
features may not be available (notably acquiring random bytes from
the operating system and scrubbing the stack). The shared library
does still require some GNU extensions for symbol versioning.
* The configure options --enable-Wno-cast-align and --enable-bootstrap
are no longer necessary and have been removed.
* If building from a Git checkout instead of a tarball release, use
'autoreconf -i' to create the configure script; autogen.sh has been
removed.
* More thoroughly tested.
Version 3.1.1
* Add '--enable-Wno-cast-align' to silence 'cast increases required alignment'
* Whitespace clean-up
Version 3.1.0
* Update upstream-contact
* Add './configure --enable-bootstrap' to skip some tests on initial build
* Add bootstrap-script for Autotools
* Add LICENSE for bcrypt
* Update crypt_blowfish to v1.3
* Add '-Wextra' to CFLAGS
* Fix warnings generated by gcc 5.1.1
* Update Autotools
Version 3.0.4
* Fix warnings generated by gcc 4.6
Version 3.0.3
* Fix memory leak
* Fix compiler warnings
Version 3.0.2
* Fix generating salts for MD5
Version 3.0.1
* Fix build failures
Version 3.0
* Add sha256 and sha512 hashes
* Move all hashes into plugins
Version 2.4
* Sync with crypt_blowfish 1.0
Version 2.3
* Fix problems with gcc > 4.0
Version 2.2
* Fix realloc call in md5-crypt
Version 2.1
* Enable x86.S for i386 again
Version 2.0
* Rename all crypt* functions to xcrypt* to avoid clash with normal
libcrypt from glibc
Version 1.4
* Fix compiling with glibc > 2.3.1
* Sync with crypt_blowfish 0.4.5
Version 1.3
* Sync with current glibc CVS (fix for not correct initialication of
internal data structs)
Version 1.2
* Fix building with glibc 2.3.x
* Add support for HPPA
Version 1.1
* merge md5.h with xcrypt.h
* Add SHA1 functions and crypt
Version 1.0
* First release