Merge #2352: [Refactor] Remove OpenSSL

5563331 Snap: remove openssl from nightly snapcraft build requirements (Fuzzbawls)
686bfad doc: Add OpenSSL removal to release notes (Fuzzbawls)
f669248 ci: remove OpenSSL installation (Fuzzbawls)
9660aec doc: remove OpenSSL from build instructions and licensing info (Fuzzbawls)
9b2e35d depends: remove OpenSSL package (Fuzzbawls)
9a81d8e CMake: remove OpenSSL detection and libs (Fuzzbawls)
53576bc build: remove OpenSSL detection and libs (fanquake)
5f30c2b Stop using OpenSSL's sha hashing in bip38 code (Fuzzbawls)
d531bf2 Use our own hmac_sha256 instead of OpenSSL's in scrypt.cpp (Fuzzbawls)
b687f8e Use ctaes instead of OpenSSL's AES in bip38 code (Fuzzbawls)
86c978a Remove unused openssl includes (Fuzzbawls)
ab830e5 remove unused EncodeBase64Secure (Fuzzbawls)
690c938 random: Remove remaining OpenSSL calls and locking infrastructure (fanquake)
602c0b2 random: stop retrieving random bytes from OpenSSL (fanquake)
b1c8396 random: stop feeding RNG output back into OpenSSL (fanquake)

Pull request description:

  The natural follow-up to #2278, #2286, and #2288. With these three PRs merged, there are only a few minor pieces of code that still rely on OpenSSL:

  - a call to `RAND_bytes` during the ::SLOW path of ProcRand
  - feeding output from our RNG back into OpenSSL via `RAND_add` during the ::SLOW and ::SLEEP paths.
  - an unused function in `utilstrencodings.cpp` (`DecodeBase64Secure()`, now removed)
  - some stale (un-needed/un-used) header includes
  - bip38 exclusive usages including the following:
    - using OpenSSL's AES for encryption, now switched to using ctaes
    - using OpenSSL to do HMAC_SHA256 hashing in `crypto/scrypt.cpp`, now switched to using our native HMAC_SHA256 header
    - an unused function in `hash.h` (`std::string Hash(std::string input)`), now removed
    - a SHA256 Hash function to compute a void pointer, switched to using template objects

  Upstream PRs backported: bitcoin#17265, bitcoin#17515, and bitcoin#18825

  The changes to bip38 were tested by doing two-way encryption/decryption between `master` and this PR

ACKs for top commit:
  random-zebra:
    ACK 5563331
  furszy:
    k, ACK 5563331 and merging..

Tree-SHA512: bfa7445d7b153bb5ea04b7b52bbedaa07ad5acd1a56221425fa5fb7c20ecbf90f392c85273734ad2a277d4fffc43b10a7a660924a8a41c175ba2fc68e6cf820f

.github/workflows/build-and-test.yml

@@ -73,7 +73,7 @@ jobs:
         config:
           - name: Linux
             os: ubuntu-16.04
-            packages: python3-zmq qtbase5-dev qttools5-dev-tools libqt5svg5-dev libssl-dev libevent-dev bsdmainutils libboost-system-dev libboost-filesystem-dev libboost-chrono-dev libboost-test-dev libboost-thread-dev libdb5.3++-dev libminiupnpc-dev libzmq3-dev libqrencode-dev libgmp-dev libsodium-dev cargo
+            packages: python3-zmq qtbase5-dev qttools5-dev-tools libqt5svg5-dev libevent-dev bsdmainutils libboost-system-dev libboost-filesystem-dev libboost-chrono-dev libboost-test-dev libboost-thread-dev libdb5.3++-dev libminiupnpc-dev libzmq3-dev libqrencode-dev libgmp-dev libsodium-dev cargo
             cc: gcc
             cxx: g++
 
@@ -299,7 +299,7 @@ jobs:
           - name: x86_64 Linux  [GOAL:install]  [xenial]  [no depends only system libs]
             os: ubuntu-16.04
             host: x86_64-unknown-linux-gnu
-            apt_get: python3-zmq qtbase5-dev qttools5-dev-tools libqt5svg5-dev libssl-dev libevent-dev bsdmainutils libboost-system-dev libboost-filesystem-dev libboost-chrono-dev libboost-test-dev libboost-thread-dev libdb5.3++-dev libminiupnpc-dev libzmq3-dev libqrencode-dev libgmp-dev libsodium-dev cargo
+            apt_get: python3-zmq qtbase5-dev qttools5-dev-tools libqt5svg5-dev libevent-dev bsdmainutils libboost-system-dev libboost-filesystem-dev libboost-chrono-dev libboost-test-dev libboost-thread-dev libdb5.3++-dev libminiupnpc-dev libzmq3-dev libqrencode-dev libgmp-dev libsodium-dev cargo
             unit_tests: true
             functional_tests: true
             no_depends: 1
@@ -310,7 +310,7 @@ jobs:
           - name: x86_64 Linux  [GOAL:install]  [bionic]  [no depends only system libs]
             os: ubuntu-18.04
             host: x86_64-unknown-linux-gnu
-            apt_get: python3-zmq qtbase5-dev qttools5-dev-tools libqt5svg5-dev libqt5charts5-dev libssl1.0-dev libevent-dev bsdmainutils libboost-system-dev libboost-filesystem-dev libboost-chrono-dev libboost-test-dev libboost-thread-dev libdb5.3++-dev libminiupnpc-dev libzmq3-dev libqrencode-dev libgmp-dev libsodium-dev cargo
+            apt_get: python3-zmq qtbase5-dev qttools5-dev-tools libqt5svg5-dev libqt5charts5-dev libevent-dev bsdmainutils libboost-system-dev libboost-filesystem-dev libboost-chrono-dev libboost-test-dev libboost-thread-dev libdb5.3++-dev libminiupnpc-dev libzmq3-dev libqrencode-dev libgmp-dev libsodium-dev cargo
             unit_tests: true
             no_depends: 1
             goal: install

CMakeLists.txt

@@ -38,7 +38,6 @@ if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
     set(ENV{target} "Mac")
     add_definitions("-DMAC_OSX")
     list(APPEND CMAKE_PREFIX_PATH /usr/local/opt/qt5)
-    list(APPEND CMAKE_PREFIX_PATH /usr/local/opt/openssl@1.1)
     list(APPEND CMAKE_PREFIX_PATH /usr/local/Cellar/berkeley-db@4)
     set(BerkeleyDB_ROOT_DIR "/usr/local/Cellar/berkeley-db@4/${BDB_VER}/")
     set(Boost_USE_MULTITHREADED ON)
@@ -74,15 +73,6 @@ if(BerkeleyDB_FOUND)
     endif()
 endif()
 
-find_package(OpenSSL COMPONENTS Crypto REQUIRED)
-if(OPENSSL_FOUND)
-    message(STATUS "Found OpenSSL (${OPENSSL_VERSION}): ${OPENSSL_LIBRARIES}")
-    if(OPENSSL_VERSION VERSION_GREATER_EQUAL 1.1)
-        message(STATUS "Found unsupported OpenSSL version!")
-        set(SSL_CONFIGURE_FLAGS "--with-unsupported-ssl")
-    endif()
-endif()
-
 find_package(LibEvent REQUIRED)
 
 find_package(GMP REQUIRED)
@@ -105,7 +95,7 @@ endif()
 if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/src/config/pivx-config.h")
 else()
     execute_process(
-        COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/configure ${CONFIGSITE} ${BDB_CONFIGURE_FLAGS} ${BIGNUM_CONFIGURE_FLAGS} ${SSL_CONFIGURE_FLAGS}
+        COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/configure ${CONFIGSITE} ${BDB_CONFIGURE_FLAGS} ${BIGNUM_CONFIGURE_FLAGS}
         WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
     )
 endif()
@@ -245,7 +235,7 @@ target_include_directories(SERVER_A PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/src
     ${CMAKE_CURRENT_SOURCE_DIR}/src/leveldb/include
     ${CMAKE_CURRENT_SOURCE_DIR}/src/leveldb/helpers/memenv
     ${CMAKE_CURRENT_SOURCE_DIR}/src/rust/include
-    ${ZMQ_INCLUDE_DIR} ${LIBEVENT_INCLUDE_DIR} ${OPENSSL_INCLUDE_DIR} ${BerkeleyDB_INCLUDE_DIRS}
+    ${ZMQ_INCLUDE_DIR} ${LIBEVENT_INCLUDE_DIR} ${BerkeleyDB_INCLUDE_DIRS}
     )
 
 if(ZMQ_FOUND)
@@ -255,7 +245,7 @@ if(ZMQ_FOUND)
         ./src/zmq/zmqpublishnotifier.cpp
     )
     add_library(ZMQ_A STATIC ${BitcoinHeaders} ${ZMQ_SOURCES} ${ZMQ_LIB})
-    target_include_directories(ZMQ_A PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/src ${ZMQ_INCLUDE_DIR} ${OPENSSL_INCLUDE_DIR})
+    target_include_directories(ZMQ_A PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/src ${ZMQ_INCLUDE_DIR})
     target_compile_definitions(ZMQ_A PUBLIC "-DZMQ_STATIC")
 endif()
 
@@ -297,7 +287,6 @@ target_include_directories(WALLET_A PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/src
         ${CMAKE_CURRENT_SOURCE_DIR}/src/secp256k1/include
         ${CMAKE_CURRENT_SOURCE_DIR}/src/univalue/include
         ${CMAKE_CURRENT_SOURCE_DIR}/src/leveldb/include
-        ${OPENSSL_INCLUDE_DIR}
         ${BerkeleyDB_INCLUDE_DIRS}
         )
 
@@ -338,7 +327,7 @@ set(BITCOIN_CRYPTO_SOURCES
         ./src/crypto/sph_types.h
         )
 add_library(BITCOIN_CRYPTO_A STATIC ${BITCOIN_CRYPTO_SOURCES})
-target_include_directories(BITCOIN_CRYPTO_A PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/src ${OPENSSL_INCLUDE_DIR})
+target_include_directories(BITCOIN_CRYPTO_A PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/src)
 
 set(ZEROCOIN_SOURCES
         ./src/libzerocoin/bignum.h
@@ -360,9 +349,7 @@ set(ZEROCOIN_SOURCES
         ./src/libzerocoin/Params.cpp
         )
 add_library(ZEROCOIN_A STATIC ${ZEROCOIN_SOURCES})
-target_include_directories(ZEROCOIN_A PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/src
-        ${OPENSSL_INCLUDE_DIR}
-        )
+target_include_directories(ZEROCOIN_A PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/src)
 
 set(COMMON_SOURCES
         ./src/base58.cpp
@@ -410,7 +397,6 @@ target_include_directories(COMMON_A PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/src
         ${CMAKE_CURRENT_SOURCE_DIR}/src/secp256k1/include
         ${CMAKE_CURRENT_SOURCE_DIR}/src/leveldb/include
         ${CMAKE_CURRENT_SOURCE_DIR}/src/univalue/include
-        ${OPENSSL_INCLUDE_DIR}
         ${BerkeleyDB_INCLUDE_DIRS}
         )
 
@@ -441,7 +427,6 @@ add_library(UTIL_A STATIC ${BitcoinHeaders} ${UTIL_SOURCES})
 target_include_directories(UTIL_A PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/src
         ${CMAKE_CURRENT_SOURCE_DIR}/src/univalue/include
         ${CMAKE_CURRENT_SOURCE_DIR}/src/rust/include
-        ${OPENSSL_INCLUDE_DIR}
         )
 
 set(CLI_A_SOURCES ./src/rpc/client.cpp)
@@ -474,7 +459,6 @@ target_include_directories(SAPLING_A PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/src
         ${CMAKE_CURRENT_SOURCE_DIR}/src/sapling
         ${CMAKE_CURRENT_SOURCE_DIR}/src/rust/include
         ${CMAKE_CURRENT_SOURCE_DIR}/src/univalue/include
-        ${OPENSSL_INCLUDE_DIR}
         ${BerkeleyDB_INCLUDE_DIRS}
         )
 
@@ -499,7 +483,7 @@ target_link_libraries(pivx-cli
         BITCOIN_CRYPTO_A
         SAPLING_A
         rustzcash
-        ${Boost_LIBRARIES} ${OPENSSL_CRYPTO_LIBRARY} ${LIBEVENT_LIB} ${sodium_LIBRARY_RELEASE} -ldl pthread
+        ${Boost_LIBRARIES} ${LIBEVENT_LIB} ${sodium_LIBRARY_RELEASE} -ldl pthread
         )
 if($ENV{target} MATCHES "Windows")
     target_link_libraries(pivx-cli ${WINDOWS_LDADD})
@@ -523,7 +507,7 @@ target_link_libraries(pivx-tx
         secp256k1
         SAPLING_A
         rustzcash
-        ${Boost_LIBRARIES} ${OPENSSL_CRYPTO_LIBRARY} ${LIBEVENT_LIB} ${sodium_LIBRARY_RELEASE} ${GMP_LIBRARY} -ldl pthread
+        ${Boost_LIBRARIES} ${LIBEVENT_LIB} ${sodium_LIBRARY_RELEASE} ${GMP_LIBRARY} -ldl pthread
         )
 if($ENV{target} MATCHES "Windows")
     target_link_libraries(pivx-tx ${WINDOWS_LDADD})
@@ -558,7 +542,7 @@ target_link_libraries(pivxd
         crc32c
         secp256k1
         rustzcash
-        ${BerkeleyDB_LIBRARIES} ${OPENSSL_CRYPTO_LIBRARY} ${Boost_LIBRARIES} ${LIBEVENT_LIB} ${GMP_LIBRARY} pthread
+        ${BerkeleyDB_LIBRARIES} ${Boost_LIBRARIES} ${LIBEVENT_LIB} ${GMP_LIBRARY} pthread
         )
 if($ENV{target} MATCHES "Windows")
     set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wstack-protector -fstack-protector-all -fPIE -pipe -O2 -pthread -Wl,--dynamicbase -Wl,--nxcompat -Wl,--high-entropy-va -pie --static")

build-aux/snap/snapcraft.yaml

@@ -311,7 +311,6 @@ parts:
       - python3
       - help2man
       - doxygen
-      - libssl-dev
       - libgmp-dev
       - libevent-dev
       - libboost-all-dev

configure.ac

@@ -558,13 +558,8 @@ case $host in
          dnl It's safe to add these paths even if the functionality is disabled by
          dnl the user (--without-wallet or --without-gui for example).
 
-         openssl_prefix=`$BREW --prefix openssl 2>/dev/null`
          bdb_prefix=`$BREW --prefix berkeley-db4 2>/dev/null`
          qt5_prefix=`$BREW --prefix qt5 2>/dev/null`
-         if test x$openssl_prefix != x; then
-           PKG_CONFIG_PATH="$openssl_prefix/lib/pkgconfig:$PKG_CONFIG_PATH"
-           export PKG_CONFIG_PATH
-         fi
          if test x$bdb_prefix != x; then
            CPPFLAGS="$CPPFLAGS -I$bdb_prefix/include"
            LIBS="$LIBS -L$bdb_prefix/lib"
@@ -1118,7 +1113,6 @@ if test x$use_pkgconfig = xyes; then
   m4_ifdef(
     [PKG_CHECK_MODULES],
     [
-      PKG_CHECK_MODULES([CRYPTO], [libcrypto],,[AC_MSG_ERROR(libcrypto  not found.)])
       BITCOIN_QT_CHECK([PKG_CHECK_MODULES([QR], [libqrencode],,[BITCOIN_QT_FAIL(libqrencode not found)])])
       if test x$use_qtcharts != xno; then
         BITCOIN_QT_CHECK([PKG_CHECK_MODULES([CHARTS], [Qt5Charts],[have_qtcharts=yes], [have_qtcharts=no])])
@@ -1144,8 +1138,6 @@ if test x$use_pkgconfig = xyes; then
     ]
   )
 else
-  AC_CHECK_HEADER([openssl/crypto.h],,AC_MSG_ERROR(libcrypto headers missing))
-  AC_CHECK_LIB([crypto],      [main],CRYPTO_LIBS=-lcrypto, AC_MSG_ERROR(libcrypto missing))
 
   if test x$build_bitcoin_utils$build_bitcoind$bitcoin_enable_qt$use_tests != xnononono; then
     AC_CHECK_HEADER([event2/event.h],, AC_MSG_ERROR(libevent headers missing),)
@@ -1481,7 +1473,6 @@ AC_SUBST(BOOST_LIBS)
 AC_SUBST(TESTDEFS)
 AC_SUBST(MINIUPNPC_CPPFLAGS)
 AC_SUBST(MINIUPNPC_LIBS)
-AC_SUBST(CRYPTO_LIBS)
 AC_SUBST(EVENT_LIBS)
 AC_SUBST(EVENT_PTHREADS_LIBS)
 AC_SUBST(SODIUM_LIBS)

depends/packages/packages.mk

@@ -72,7 +72,7 @@ rust_crates := \
   crate_zcash_proofs
 
 rust_packages := rust $(rust_crates)
-packages:=boost openssl libevent gmp $(zcash_packages) libsodium
+packages:=boost libevent gmp $(zcash_packages) libsodium
 
 qt_packages = qrencode zlib
 

doc/build-osx.md

@@ -16,7 +16,7 @@ Then install [Homebrew](https://brew.sh).
 Dependencies
 ----------------------
 
-    brew install autoconf automake berkeley-db4 libtool boost miniupnpc openssl pkg-config python3 qt5 zmq libevent qrencode gmp libsodium rust
+    brew install autoconf automake berkeley-db4 libtool boost miniupnpc pkg-config python3 qt5 zmq libevent qrencode gmp libsodium rust
 
 See [dependencies.md](dependencies.md) for a complete overview.
 

doc/build-unix.md

@@ -31,7 +31,6 @@ These dependencies are required:
 
  Library     | Purpose            | Description
  ------------|--------------------|----------------------
- libssl      | Crypto             | Random Number Generation, Elliptic Curve Cryptography
  libboost    | Utility            | Library for threading, data structures, etc
  libevent    | Networking         | OS independent asynchronous networking
  libgmp      | Bignum Arithmetic  | Precision arithmetic
@@ -72,7 +71,7 @@ Build requirements:
 
 Now, you can either build from self-compiled [depends](/depends/README.md) or install the required dependencies:
 
-    sudo apt-get install libssl-dev libgmp-dev libevent-dev libboost-all-dev libsodium-dev cargo
+    sudo apt-get install libgmp-dev libevent-dev libboost-all-dev libsodium-dev cargo
 
 BerkeleyDB is required for the wallet.
 
@@ -124,7 +123,7 @@ built by default.
 
 Build requirements:
 
-    sudo dnf install which gcc-c++ libtool make autoconf automake compat-openssl10-devel libevent-devel boost-devel libdb4-devel libdb4-cxx-devel gmp-devel libsodium-devel cargo python3
+    sudo dnf install which gcc-c++ libtool make autoconf automake libevent-devel boost-devel libdb4-devel libdb4-cxx-devel gmp-devel libsodium-devel cargo python3
 
 Optional:
 

doc/dependencies.md

@@ -19,7 +19,6 @@ These are the dependencies currently used by PIVX Core. You can find instruction
 | libpng |  |  |  |  | [Yes](https://github.com/pivx-project/pivx/blob/master/depends/packages/qt.mk#L64) |
 | librsvg | |  |  |  |  |
 | MiniUPnPc | [2.2.2](https://miniupnp.tuxfamily.org/files) |  | No |  |  |
-| OpenSSL | [1.0.1k](https://www.openssl.org/source) |  | Yes |  |  |
 | GMP | [6.1.2](https://gmplib.org/) | | No | | |
 | PCRE |  |  |  |  | [Yes](https://github.com/pivx-project/pivx/blob/master/depends/packages/qt.mk#L66) |
 | Python (tests) |  | [3.5](https://www.python.org/downloads) |  |  |  |

doc/release-notes.md

@@ -135,6 +135,11 @@ The `autocombine` RPC command has been replaced with specific set/get commands (
 The minimum supported miniUPnPc API version is set to 10. This keeps compatibility with Ubuntu 16.04 LTS and Debian 8 `libminiupnpc-dev` packages. Please note, on Debian this package is still vulnerable to [CVE-2017-8798](https://security-tracker.debian.org/tracker/CVE-2017-8798) (in jessie only) and [CVE-2017-1000494](https://security-tracker.debian.org/tracker/CVE-2017-1000494) (both in jessie and in stretch).
 
 
+#### Build System
+
+OpenSSL is no longer used by PIVX Core
+
+
 #### Disable PoW mining RPC Commands
 
 A new configure flag has been introduced to allow more granular control over weather or not the PoW mining RPC commands are compiled into the wallet. By default they are not. This behavior can be overridden by passing `--enable-mining-rpc` to the `configure` script.

libbitcoinconsensus.pc.in

@@ -8,4 +8,3 @@ Description: Library for the Bitcoin consensus protocol.
 Version: @PACKAGE_VERSION@
 Libs: -L${libdir} -lbitcoinconsensus
 Cflags: -I${includedir}
-Requires.private: libcrypto

src/Makefile.am

@@ -20,7 +20,7 @@ LIBUNIVALUE = $(UNIVALUE_LIBS)
 endif
 
 BITCOIN_CONFIG_INCLUDES=-I$(builddir)/config
-BITCOIN_INCLUDES=-I$(builddir) -I$(builddir)/obj $(BDB_CPPFLAGS) $(BOOST_CPPFLAGS) $(LEVELDB_CPPFLAGS) $(CRYPTO_CFLAGS)
+BITCOIN_INCLUDES=-I$(builddir) -I$(builddir)/obj $(BDB_CPPFLAGS) $(BOOST_CPPFLAGS) $(LEVELDB_CPPFLAGS)
 
 BITCOIN_INCLUDES += -I$(srcdir)/rust/include
 BITCOIN_INCLUDES += -I$(srcdir)/secp256k1/include
@@ -621,7 +621,7 @@ pivxd_LDADD = \
   $(LIBRUSTZCASH) \
   $(LIBZCASH_LIBS)
 
-pivxd_LDADD += $(BOOST_LIBS) $(BDB_LIBS) $(CRYPTO_LIBS) $(MINIUPNPC_LIBS) $(EVENT_PTHREADS_LIBS) $(EVENT_LIBS) $(ZMQ_LIBS)
+pivxd_LDADD += $(BOOST_LIBS) $(BDB_LIBS) $(MINIUPNPC_LIBS) $(EVENT_PTHREADS_LIBS) $(EVENT_LIBS) $(ZMQ_LIBS)
 
 # pivx-cli binary #
 pivx_cli_SOURCES = pivx-cli.cpp
@@ -642,7 +642,7 @@ pivx_cli_LDADD = \
   $(LIBRUSTZCASH) \
   $(LIBZCASH_LIBS)
 
-pivx_cli_LDADD += $(BOOST_LIBS) $(CRYPTO_LIBS) $(EVENT_LIBS)
+pivx_cli_LDADD += $(BOOST_LIBS) $(EVENT_LIBS)
 #
 
 # pivx-tx binary #
@@ -666,7 +666,7 @@ pivx_tx_LDADD = \
   $(LIBRUSTZCASH) \
   $(LIBZCASH_LIBS)
 
-pivx_tx_LDADD += $(BOOST_LIBS) $(CRYPTO_LIBS)
+pivx_tx_LDADD += $(BOOST_LIBS)
 #
 
 # bitcoinconsensus library #