我发现在 RHEL7 和 Debian9 上使用 cryptopp 生成 SHA3 哈希的行为存在非常奇怪的差异。如果我使用 SHA1 或 MD5 哈希,则两个平台上的输出是相同的。我已将其简化为以下最小程序:
#include <iostream>
#include <cryptopp/sha3.h>
#include <cryptopp/filters.h>
#include <cryptopp/hex.h>
using namespace CryptoPP;
int main(int argc, const char* argv[])
{
{
CryptoPP::SHA3_256 sha256;
std::string hash = "";
StringSource("", true, new HashFilter(sha256, new HexEncoder(new StringSink(hash))));
std::cout << "hash='" << hash << "'\n";
}
{
CryptoPP::SHA3_256 sha256;
std::string hash = "";
StringSource("{}", true, new HashFilter(sha256, new HexEncoder(new StringSink(hash))));
std::cout << "hash='" << hash << "'\n";
}
}
在 Debian 上,输出为:
hash='A7FFC6F8BF1ED76651C14756A061D662F580FF4DE43B49FA82D80A4B80F8434A'
hash='840EB7AA2A9935DE63366BACBE9D97E978A859E93DC792A0334DE60ED52F8E99'
根据https://emn178.github.io/online-tools/sha3_256.html的在线转换器,这是正确的
但是在 RHEL7 上,输出很奇怪:
hash='C5D2460186F7233C927E7DB2DCC703C0E500B653CA82273B7BFAD8045D85A470'
hash='B48D38F93EAA084033FC5970BF96E559C33C4CDC07D889AB00B4D63F9590739D'
因此,要么我做错了什么,要么库中存在错误或安装错误。
我在滥用 libcrytopp 吗?像缺少 MessageEnd() 之类的东西?
在 RHEL7 上:
>ldd ./hashtest
linux-vdso.so.1 => (0x00007ffecd1b1000)
libcryptopp.so.6 => /lib64/libcryptopp.so.6 (0x00007f71c3707000)
libstdc++.so.6 => /lib64/libstdc++.so.6 (0x00007f71c3400000)
libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f71c31ea000)
libc.so.6 => /lib64/libc.so.6 (0x00007f71c2e1d000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f71c2c01000)
libm.so.6 => /lib64/libm.so.6 (0x00007f71c28ff000)
/lib64/ld-linux-x86-64.so.2 (0x00007f71c3e2e000)
>file /lib64/libcryptopp.so.6.0.0
/lib64/libcryptopp.so.6.0.0: ELF 64-bit LSB shared object, x86-64, version 1 (GNU/Linux), dynamically linked, BuildID[sha1]=4a0941023c6e957077cb555536a509a0ef93bf04, stripped
在 Debian 上:
>ldd ./hashtest
linux-vdso.so.1 (0x00007ffedc5e6000)
libcrypto++.so.6 => /usr/lib/x86_64-linux-gnu/libcrypto++.so.6 (0x00007f1d3b79a000)
libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f1d3b418000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f1d3b201000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f1d3ae62000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f1d3ac45000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f1d3a941000)
/lib64/ld-linux-x86-64.so.2 (0x00007f1d3bf35000)
>file /usr/lib/x86_64-linux-gnu/libcrypto++.so.6.0.0
/usr/lib/x86_64-linux-gnu/libcrypto++.so.6.0.0: ELF 64-bit LSB shared object, x86-64, version 1 (GNU/Linux), dynamically linked, BuildID[sha1]=5c6cb06479005d2ebfa40c75e5489c915d314b70, stripped
在两个平台上似乎都是 v6.0.0,但是:
>apt-cache show crypto++
[snip]
Package: libcrypto++-dev
Source: libcrypto++
Version: 5.6.4-7
>yum info --enablerepo=epel cryptopp
Installed Packages
Name : cryptopp
Arch : x86_64
Version : 5.6.2
Release : 10.el7
Size : 5.2 M
Repo : installed
From repo : epel
Summary : C++ class library of cryptographic schemes
URL : http://www.cryptopp.com/
Licence : Boost
Description : Crypto++ Library is a free C++ class library of cryptographic schemes.
: See http://www.cryptopp.com/ for a list of supported algorithms.
:
: 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 are in the public domain.