Recently I also faced a similar segfault, where I did not find any flaw in my implementation. I was doing different trials where I have seen if I decrease the optimization level(or no optimization) for the project who use cryptopp..the crash is gone.
It's not the solution but if you have some time...can you try this out. Regards, Sunandan On Tue, May 4, 2021 at 11:38 PM Rogier <rogier.b...@gmail.com> wrote: > Hi, > I keep getting segfaults within cryptopp on freebsd for at least PBKDF > DeriveKey(). I used the sample code from the wiki: > https://www.cryptopp.com/wiki/PKCS12_PBKDF > > I used the cryptopp-lib that is available through the binary ports > collection (pkg). The reported version is 8.5.0 > > Any ideas on how I can fix this or at least where to look? > > Below all the technical info about versions and traces for a first triage. > > - Rogier > > $ ./crypto_test > [1] 995 segmentation fault (core dumped) ./crypto_test > > lldb ./crypto_test -c crypto_test.core > (lldb) target create "./crypto_test" --core "crypto_test.core" > Core file '/home/bloem/source/c++/etude/crypto_test.core' (x86_64) was > loaded. > (lldb) bt > * thread #1, name = 'crypto_test', stop reason = signal SIGSEGV > * frame #0: 0x00000008008d64b1 > libcryptopp.so.8`___lldb_unnamed_symbol84$$libcryptopp.so.8 + 17 > frame #1: 0x00000008008d72af > libcryptopp.so.8`CryptoPP::SHA256::HashMultipleBlocks(unsigned int const*, > unsigned long) + 79 > frame #2: 0x0000000800843682 > libcryptopp.so.8`CryptoPP::IteratedHashBase<unsigned int, > CryptoPP::HashTransformation>::Update(unsigned char const*, unsigned long) > + 338 > frame #3: 0x0000000000210771 > crypto_test`CryptoPP::HashTransformation::CalculateDigest(unsigned char*, > unsigned char const*, unsigned long) + 49 > frame #4: 0x000000000020cf6c > crypto_test`CryptoPP::PKCS12_PBKDF<CryptoPP::SHA256>::DeriveKey(unsigned > char*, unsigned long, unsigned char, unsigned char const*, unsigned long, > unsigned char const*, unsigned long, unsigned int, double) const + 844 > frame #5: 0x000000000020c9be crypto_test`main + 190 > frame #6: 0x000000000020c710 crypto_test`_start(ap=<unavailable>, > cleanup=<unavailable>) at crt1.c:76:7 > > $ c++ -o crypto_test \ > -I/usr/local/include/cryptopp \ > -L/usr/local/lib/ -lcryptopp \ > crypto_test1.cc > > $cat crypto_test1.cc > #include <iostream> > #include <string> > > #include "cryptlib.h" > #include "pwdbased.h" > #include "sha.h" > #include "hex.h" > > int main(int argc, char* argv[]) > { > using namespace CryptoPP; > > byte password[] ="password"; > size_t plen = strlen((const char*)password); > > byte salt[] = "salt"; > size_t slen = strlen((const char*)salt); > > byte derived[SHA256::DIGESTSIZE]; > > PKCS12_PBKDF<SHA256> pbkdf; > byte purpose = 0; > > pbkdf.DeriveKey(derived, sizeof(derived), purpose, password, plen, > salt, slen, 1024, 0.0f); > > std::string result; > HexEncoder encoder(new StringSink(result)); > > encoder.Put(derived, sizeof(derived)); > encoder.MessageEnd(); > > std::cout << "Derived: " << result << std::endl; > > return 0; > } > > $ uname -v > FreeBSD 12.2-RELEASE-p6 GENERIC > > $ c++ --version > FreeBSD clang version 10.0.1 (g...@github.com:llvm/llvm-project.git > llvmorg-10.0.1-0-gef32c611aa2) > Target: x86_64-unknown-freebsd12.2 > Thread model: posix > InstalledDir: /usr/bin > > $ pkg info cryptopp > cryptopp-8.5.0 > Name : cryptopp > Version : 8.5.0 > Installed on : Mon May 3 20:11:11 2021 CEST > Origin : security/cryptopp > Architecture : FreeBSD:12:amd64 > Prefix : /usr/local > Categories : security > Licenses : BSL > Maintainer : jhale < a t > FreeBSD.org > WWW : https://www.cryptopp.com/ > Comment : Free C++ class library of Cryptographic Primitives > Options : > DEBUG : off > DOCS : on > FULL_DEBUG : off > SIMD : off > TOOLS : on > Shared Libs provided: > libcryptopp.so.8 > Annotations : > FreeBSD_version: 1202000 > cpe : cpe:2.3:a:cryptopp:crypto++:8.5.0:::::freebsd12:x64 > repo_type : binary > repository : FreeBSD > Flat size : 28.0MiB > Description : > Crypto++ Library is a free C++ class library of cryptographic schemes. > One purpose of Crypto++ is to act as a repository of public domain (not > copyrighted) source code. Although the library is copyrighted as a > compilation, the individual files in it (except for a few exceptions listed > in the license) are in the public domain. > > WWW: https://www.cryptopp.com/ > > > > -- > You received this message because you are subscribed to the Google Groups > "Crypto++ Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to cryptopp-users+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/cryptopp-users/62215a2d-3011-489c-ade4-75b6dece16d7n%40googlegroups.com > <https://groups.google.com/d/msgid/cryptopp-users/62215a2d-3011-489c-ade4-75b6dece16d7n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "Crypto++ Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to cryptopp-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/cryptopp-users/CAKPYA21DGus1erXKct1dJcbNUkWnELwB4%2Bpc32XUNcyZUtZo7A%40mail.gmail.com.
