From 3baeb11a8fbcfcdbc31976d421f17b85503b3ecd Mon Sep 17 00:00:00 2001 From: WuKong Date: Fri, 4 Sep 2015 09:25:34 +0200 Subject: init attribute-based encryption Change-Id: Iba1a3d722110abf747a0fba366f3ebc911d25b25 --- moon-abe/pbc-0.5.14/NEWS | 121 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 121 insertions(+) create mode 100644 moon-abe/pbc-0.5.14/NEWS (limited to 'moon-abe/pbc-0.5.14/NEWS') diff --git a/moon-abe/pbc-0.5.14/NEWS b/moon-abe/pbc-0.5.14/NEWS new file mode 100644 index 00000000..4c08dae8 --- /dev/null +++ b/moon-abe/pbc-0.5.14/NEWS @@ -0,0 +1,121 @@ +The PBC pairing-based cryptography library. See COPYING for license. + +Ben Lynn + +Changes between PBC version 0.5.14 and 0.5.13 + +* Eta pairing (type I), by Homer Hsing + +Changes between PBC version 0.5.13 and 0.5.12 + +* Many thanks to Homer Hsing for volunteering to maintain this library. +* Flattened nested functions. +* Bugfix for test script. + +Changes between PBC version 0.5.12 and 0.5.11 + +* Fixed a parsing bug reported by Michael Adjedj. + +Changes between PBC version 0.5.11 and 0.5.10 + +* Support native win32 compilation via autotools. Thanks to Michael Rushanan. + +Changes between PBC version 0.5.10 and 0.5.9 + +* pairing_init_pbc_param() fix thanks to Michael Adjedj. + +Changes between PBC version 0.5.9 and 0.5.8 + +* Bugfix thanks to Michael Adjedj. +* Reduce high exponents for exponentiations in finite groups. + +Changes between PBC version 0.5.8 and 0.5.7 + +* Changed the license to LGPL. + +Changes between PBC version 0.5.7 and 0.5.6 + +* Faster multi-pairing (product of pairings) for A, A1, and D pairings. + Contributed by Zhang Ye. +* New API functions element_pairing() and element_prod_pairing(). + +Changes between PBC version 0.5.6 and 0.5.5 + +* Projective coordinates for A1 pairings. Contributed by Zhang Ye. +* Bugfix for affine coordinates for A pairings. Contributed by Zhang Ye. +* Optionally suppress error messages. Based on code by Geremy Condra. + +Changes between PBC version 0.5.5 and 0.5.4 + +* Fixed bug reported by Zhang Ye: comparisons with the identity element in the + input groups was broken. +* Fixed bug reported by Mario Di Raimondo: comparisons in G2 for some pairing + types were broken. (Different representatives of the same coset are now + considered equal.) + +Changes between PBC version 0.5.4 and 0.5.3 + +* Accessors for coordinates of points and coefficients of polynomials. + +Changes between PBC version 0.5.3 and 0.5.2 + +* Revamped pairing-based calculator. + +Changes between PBC version 0.5.2 and 0.5.1 + +* Fixed pbc_param_set_str(). +* Add DLL to Windows release. + +Changes between PBC version 0.5.1 and 0.5.0 + +* Fixed pbc_param_t parsing bugs, and added error detection. +* Increased buffer size in pbc_demo_pairing_init() so the sample parameters + actually work. + +== New in PBC 0.5.0 == + +The largest changes involve pairing initialization and pairing parameters. + +For pairing initialization, supply a buffer containing pairing parameters +instead of a `FILE *` stream. For example, rather than: + + pairing_init_inp_str(pairing, stdin); + +write something like: + + char s[1024]; + size_t count = fread(s, 1, 1024, stdin); + if (!count) pbc_die("input error"); + if (pairing_init_set_buf(pairing, s, count)) pbc_die("pairing init failed"); + +For file reads, personally I like to use mmap() which suits +pairing_init_set_buf(). + +The `pbc_param_t` data type for pairing parameters replaces `a_param_t`, ..., +`g_param_t`. Having the same data type for all pairing parameter types +simplifies the library, though some functions had to be changed slightly. + +At last, one can initialize a `pairing_t` from a `pbc_param_t`: + + pairing_t p; + pbc_param_t par; + pbc_param_init_a_gen(par, 160, 512); + pairing_init_pbc_param(p, par); + pbc_param_clear(par); + +=== Minor differences === + +I trimmed the API. The file stream operations are gone. I removed the +fetch_ops_t and tracker_t types: the standard C library already provides +routines for reading from disk to memory. + +I refactored to avoid exposing `symtab_t` and `darray_t`, and undocumented +routines such as `poly_alloc()`. I mostly preserved the headers that define +these functions, but they are no longer included by `pbc.h`. + +I replaced the CMake files with `simple.make`, which I use during development, +though I test the autotools build before release. + +To reduce symbol pollution, all official functions and variables of the PBC +now start with `pbc_`, `field_`, `element_` or `pairing_`. Other names mostly +have hidden visibility in a shared library. Watch out for renamed functions. -- cgit 1.2.3-korg