| 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768 |
- This is an implementation of a password hashing method, provided via the
- crypt(3) and a reentrant interface. It is fully compatible with
- OpenBSD's bcrypt.c for prefix "$2b$", originally by Niels Provos and
- David Mazieres. (Please refer to the included crypt(3) man page for
- information on minor compatibility issues for other bcrypt prefixes.)
- I've placed this code in the public domain, with fallback to a
- permissive license. Please see the comment in crypt_blowfish.c for
- more information.
- You can use the provided routines in your own packages, or link them
- into a C library. I've provided hooks for linking into GNU libc, but
- it shouldn't be too hard to get this into another C library. Note
- that simply adding this code into your libc is probably not enough to
- make your system use the new password hashing algorithm. Changes to
- passwd(1), PAM modules, or whatever else your system uses will likely
- be needed as well. These are not a part of this package, but see
- LINKS for a pointer to our tcb suite.
- Instructions on using the routines in one of the two common ways are
- given below. It is recommended that you test the routines on your
- system before you start. Type "make check" or "make check_threads"
- (if you have the POSIX threads library), then "make clean".
- 1. Using the routines in your programs.
- The available interfaces are in ow-crypt.h, and this is the file you
- should include. You won't need crypt.h. When linking, add all of the
- C files and x86.S (you can compile and link it even on a non-x86, it
- will produce no code in this case).
- 2. Building the routines into GNU C library.
- For versions 2.13 and 2.14 (and likely other nearby ones), extract the
- library sources as usual. Apply the patch for glibc 2.14 provided in
- this package. Enter crypt/ and rename crypt.h to gnu-crypt.h within
- that directory. Copy the C sources, header, and assembly (x86.S) files
- from this package in there as well (but be sure you don't overwrite the
- Makefile). Configure, build, and install the library as usual.
- For versions 2.2 to 2.3.6 (and likely also for some newer ones),
- extract the library sources and maybe its optional add-ons as usual.
- Apply the patch for glibc 2.3.6 provided in this package. Enter
- crypt/ and rename crypt.h to gnu-crypt.h within that directory. Copy
- the C sources, header, and assembly (x86.S) files from this package in
- there as well (but be sure you don't overwrite the Makefile).
- Configure, build, and install the library as usual.
- For versions 2.1 to 2.1.3, extract the library sources and the crypt
- and linuxthreads add-ons as usual. Apply the patch for glibc 2.1.3
- provided in this package. Enter crypt/sysdeps/unix/, and rename
- crypt.h to gnu-crypt.h within that directory. Copy C sources, header,
- and assembly (x86.S) files from this package in there as well (but be
- sure you don't overwrite the Makefile). Configure, build, and install
- the library as usual.
- Programs that want to use the provided interfaces will need to include
- crypt.h (but not ow-crypt.h directly). By default, prototypes for the
- new routines aren't defined (but the extra functionality of crypt(3)
- is indeed available). You need to define _OW_SOURCE to obtain the new
- routines as well.
- --
- Solar Designer <solar at openwall.com>
- $Owl: Owl/packages/glibc/crypt_blowfish/README,v 1.10 2014/07/07 15:19:04 solar Exp $
|
