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/
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