Add bls12 381 shake 256 ciphersuite (#4)

.uncrustify.cfg

@@ -21,11 +21,12 @@ sp_after_cast=add
 
 ls_for_split_full=true
 ls_func_split_full=true
-ls_code_width=true
+ls_code_width=false
 
 # Arithmetic operations in wrapped expressions should be at the start
 # of the line.
 pos_arith=lead
+pos_comma = trail
 
 # Fully parenthesize boolean exprs
 mod_full_paren_if_bool=false

CMakeLists.txt

@@ -62,6 +62,19 @@ ExternalProject_Get_Property(relic BINARY_DIR)
 ExternalProject_Get_Property(relic SOURCE_DIR)
 include_directories(${SOURCE_DIR}/include)
 
+find_program(MAKE_EXECUTABLE NAMES gmake make mingw32-make REQUIRED)
+
+ExternalProject_Add(
+  KeccakCodePackage
+  PREFIX ${CMAKE_BINARY_DIR}/KeccakCodePackage
+  GIT_REPOSITORY https://github.com/XKCP/XKCP.git
+  GIT_TAG 07ed6e44dc9032708b438ad19740970a40b3b285
+  GIT_SUBMODULES "support/XKCBuild"
+  UPDATE_DISCONNECTED 1
+  CONFIGURE_COMMAND ""
+  BUILD_IN_SOURCE 1
+  BUILD_COMMAND ${MAKE_EXECUTABLE} -j generic64/libXKCP.a
+  INSTALL_COMMAND "")
 
 file(MAKE_DIRECTORY ${BINARY_DIR}/${CMAKE_INSTALL_INCLUDEDIR}) # avoid race
                                                                # condition
@@ -70,7 +83,5 @@ if(DEFINED LIBBBS_DEBUG)
   add_compile_definitions(LIBBBS_DEBUG)
 endif()
 
-
-
 add_subdirectory(src)
 add_subdirectory(test)

README.md

@@ -2,7 +2,7 @@
 
 Specification-compliant and performant implementation of the [bbs signature scheme](https://www.ietf.org/archive/id/draft-irtf-cfrg-bbs-signatures-05.html).
 
-Provides a library `libbbs` implementing the `BLS12381-SHA-256` cipher suite.
+Provides a library `libbbs` implementing the `BLS12381-SHA-256` and `BLS12-381-SHAKE-256` cipher suite.
 
 ## Setup
 
@@ -31,4 +31,3 @@ cmake ..
 make -j
 make test
 ```
-