Remove SIDH and SIKE (#1272)

Due to https://eprint.iacr.org/2022/975.

Fixes #1268.

.CMake/alg_support.cmake

@@ -47,26 +47,6 @@ cmake_dependent_option(OQS_ENABLE_KEM_frodokem_976_shake "" ON "OQS_ENABLE_KEM_F
 cmake_dependent_option(OQS_ENABLE_KEM_frodokem_1344_aes "" ON "OQS_ENABLE_KEM_FRODOKEM" OFF)
 cmake_dependent_option(OQS_ENABLE_KEM_frodokem_1344_shake "" ON "OQS_ENABLE_KEM_FRODOKEM" OFF)
 
-option(OQS_ENABLE_KEM_SIKE "Enable SIKE algorithm family" ON)
-cmake_dependent_option(OQS_ENABLE_KEM_sike_p434 "" ON "OQS_ENABLE_KEM_SIKE" OFF)
-cmake_dependent_option(OQS_ENABLE_KEM_sike_p434_compressed "" ON "OQS_ENABLE_KEM_SIKE" OFF)
-cmake_dependent_option(OQS_ENABLE_KEM_sike_p503 "" ON "OQS_ENABLE_KEM_SIKE" OFF)
-cmake_dependent_option(OQS_ENABLE_KEM_sike_p503_compressed "" ON "OQS_ENABLE_KEM_SIKE" OFF)
-cmake_dependent_option(OQS_ENABLE_KEM_sike_p610 "" ON "OQS_ENABLE_KEM_SIKE" OFF)
-cmake_dependent_option(OQS_ENABLE_KEM_sike_p610_compressed "" ON "OQS_ENABLE_KEM_SIKE" OFF)
-cmake_dependent_option(OQS_ENABLE_KEM_sike_p751 "" ON "OQS_ENABLE_KEM_SIKE" OFF)
-cmake_dependent_option(OQS_ENABLE_KEM_sike_p751_compressed "" ON "OQS_ENABLE_KEM_SIKE" OFF)
-
-option(OQS_ENABLE_KEM_SIDH "Enable SIDH algorithm family" ON)
-cmake_dependent_option(OQS_ENABLE_KEM_sidh_p434 "" ON "OQS_ENABLE_KEM_SIDH" OFF)
-cmake_dependent_option(OQS_ENABLE_KEM_sidh_p434_compressed "" ON "OQS_ENABLE_KEM_SIDH" OFF)
-cmake_dependent_option(OQS_ENABLE_KEM_sidh_p503 "" ON "OQS_ENABLE_KEM_SIDH" OFF)
-cmake_dependent_option(OQS_ENABLE_KEM_sidh_p503_compressed "" ON "OQS_ENABLE_KEM_SIDH" OFF)
-cmake_dependent_option(OQS_ENABLE_KEM_sidh_p610 "" ON "OQS_ENABLE_KEM_SIDH" OFF)
-cmake_dependent_option(OQS_ENABLE_KEM_sidh_p610_compressed "" ON "OQS_ENABLE_KEM_SIDH" OFF)
-cmake_dependent_option(OQS_ENABLE_KEM_sidh_p751 "" ON "OQS_ENABLE_KEM_SIDH" OFF)
-cmake_dependent_option(OQS_ENABLE_KEM_sidh_p751_compressed "" ON "OQS_ENABLE_KEM_SIDH" OFF)
-
 option(OQS_ENABLE_SIG_PICNIC "Enable Picnic algorithm family" ON)
 cmake_dependent_option(OQS_ENABLE_SIG_picnic_L1_UR "" ON "OQS_ENABLE_SIG_PICNIC" OFF)
 cmake_dependent_option(OQS_ENABLE_SIG_picnic_L1_FS "" ON "OQS_ENABLE_SIG_PICNIC" OFF)

.github/CODEOWNERS

@@ -11,7 +11,6 @@
 /src/kem/frodokem @dstebila
 /src/kem/kyber @jschanck @bhess
 /src/kem/ntru @jschanck
-/src/kem/sike @christianpaquin
 /src/oqsconfig.h.cmake @xvzcf
 /src/sig/dilithium @bhess
 /src/sig/picnic @christianpaquin

CMakeLists.txt

@@ -82,9 +82,6 @@ elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "s390x")
 elseif(OQS_PERMIT_UNSUPPORTED_ARCHITECTURE)
     message(WARNING "Unknown or unsupported processor: " ${CMAKE_SYSTEM_PROCESSOR})
     message(WARNING "Compilation on an unsupported processor should only be used for testing, as it may result an insecure configuration, for example due to variable-time instructions leaking secret information.")
-    # disable SIKE whose build fails on unsupported platforms
-    set(OQS_ENABLE_KEM_SIKE OFF)
-    set(OQS_ENABLE_KEM_SIDH OFF)
 else()
     message(FATAL_ERROR "Unknown or unsupported processor: " ${CMAKE_SYSTEM_PROCESSOR} ". Override by setting OQS_PERMIT_UNSUPPORTED_ARCHITECTURE=ON")
 endif()
@@ -145,9 +142,6 @@ endif()
 if(${OQS_ENABLE_KEM_FRODOKEM})
     set(PUBLIC_HEADERS ${PUBLIC_HEADERS} ${PROJECT_SOURCE_DIR}/src/kem/frodokem/kem_frodokem.h)
 endif()
-if(${OQS_ENABLE_KEM_SIKE} OR ${OQS_ENABLE_KEM_SIDH})
-    set(PUBLIC_HEADERS ${PUBLIC_HEADERS} ${PROJECT_SOURCE_DIR}/src/kem/sike/kem_sike.h)
-endif()
 if(${OQS_ENABLE_SIG_PICNIC})
     set(PUBLIC_HEADERS ${PUBLIC_HEADERS} ${PROJECT_SOURCE_DIR}/src/sig/picnic/sig_picnic.h)
 endif()

README.md

@@ -47,7 +47,6 @@ Details on each supported algorithm can be found in the [docs/algorithms](https:
 - **NTRU**: NTRU-HPS-2048-509, NTRU-HPS-2048-677, NTRU-HPS-4096-821, NTRU-HPS-4096-1229, NTRU-HRSS-701, NTRU-HRSS-1373
 - **NTRU-Prime**: ntrulpr653, ntrulpr761, ntrulpr857, ntrulpr1277, sntrup653, sntrup761, sntrup857, sntrup1277
 - **SABER**: LightSaber-KEM, Saber-KEM, FireSaber-KEM
-- **SIKE**: SIDH-p434, SIDH-p434-compressed, SIDH-p503, SIDH-p503-compressed, SIDH-p610, SIDH-p610-compressed, SIDH-p751, SIDH-p751-compressed, SIKE-p434, SIKE-p434-compressed, SIKE-p503, SIKE-p503-compressed, SIKE-p610, SIKE-p610-compressed, SIKE-p751, SIKE-p751-compressed
 <!--- OQS_TEMPLATE_FRAGMENT_LIST_KEXS_END -->
 
 #### Signature schemes