我是helib的新手，目前正在测试aes的同态解密函数。作为测试的一部分，我手动输入AES密钥、纯文本和相应密码文本的测试值。然后我将密码文本传递给同态解密函数，得到纯文本的同态加密。这段测试代码似乎工作得很好，直到昨天早上它在调用同态解密函数时出错地说非法指令（核心转储）。未能在测试代码中找到根本原因，我尝试运行github repo中给定的test_aes程序，但它也未能运行。在过去，当我遇到这个问题时，关闭vm并重新启动它是有帮助的。我试过调试我的测试代码，但没有成功。如果您能帮忙调试，我们将不胜感激。
Pasting the code here :
uint8_t key[]={1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16};
uint8_t input[]={51,51,48,48,48,48,48,48,48,48,48,48,48,48,48,48};
uint8_t cipher[]= {201,133,214,86,19,4,199,214,206,13,152,237,236,11,241,25,108,192,10,102,210,173,131,255,215,110,154,43,202,216,154,1};
//manually adding the test values
Vec<uint8_t> aesCtxt(INIT_SIZE, nBlocks16);
Vec<uint8_t> ptxt(INIT_SIZE, nBlocks16);
for (long i=0;i<ptxt.length();i++)
ptxt.put(i,input[i]);
Vec<uint8_t> aesKey(INIT_SIZE, 16); // AES-128
for (long i=0;i<aesKey.length();i++)
aesKey.put(i,key[i]);
Vec<uint8_t> tmpBytes(INIT_SIZE, nBlocks*16);
for (long i=0;i<tmpBytes.length();i++)
tmpBytes.put(i,cipher[i]);
cerr << " cipher = "; printState(tmpBytes);
cout<< "going to encrypt AES key";
vector< Ctxt > encryptedAESkey;
hAES.encryptAESkey(encryptedAESkey, aesKey, publicKey);
//going to homomorphically decrypt to get Homomorphic encryption of (ptxt)
Vec encodedBytes;
encode4AES(encodedBytes, tmpBytes, hAES.getEA()); // encode as HE plaintext
vector< Ctxt > doublyEncrypted_AES_x;
--------->fails here and shows Illegal instruction (core dumped ).< --------------
// Allocate space for the output ciphertexts, initialized to zero
doublyEncrypted_AES_x.resize(encodedBytes.length(), Ctxt(ZeroCtxtLike,encryptedAESkey[0]));
cout<<"Dummy encrypt";
for (long i=0; i<(long)doublyEncrypted_AES_x.size(); i++) // encode ptxt as HE ctxt
doublyEncrypted_AES_x[i].DummyEncrypt(encodedBytes[i]);
hAES.homAESdec(doublyEncrypted_AES_x, encryptedAESkey); // do the real work
提前谢谢！
编辑：
添加valgrind输出：
==2653== Memcheck, a memory error detector
==2653== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.
==2653== Using Valgrind-3.10.1 and LibVEX; rerun with -h for copyright info
==2653== Command: ./Test_AES_x
==2653==
*** Test_AES: c=3, L=42, B=23, boot=0, packed=1, m=771 (=[771]), gens=[5], ords=[-32]
computing key-independent tables...done in 1.08 seconds
27 primes (21 ctxt/6 special), total bitsize=855.929, security level: -107.015
32 slots (2 blocks) per ctxt
computing key-dependent tables...done in 10.368 seconds
computing AES tables...ptxt length32AES key added input = [c9 85 d6 56 13 4 c7 d6 ce d 98 ed ec b f1 19 6c c0 a 66 d2 ad 83 ff d7 6e 9a 2b ca d8 9a 1 ]going to encrypt AES keyentered funcHE encodedd as plaintextcalling func
vex amd64->IR: unhandled instruction bytes: 0xF3 0x4C 0xF 0x38 0xF6 0x57 0x28 0x66
vex amd64->IR: REX=1 REX.W=1 REX.R=1 REX.X=0 REX.B=0
vex amd64->IR: VEX=0 VEX.L=0 VEX.nVVVV=0x0 ESC=0F38
vex amd64->IR: PFX.66=0 PFX.F2=0 PFX.F3=1
==2653== valgrind: Unrecognised instruction at address 0x4e5e0f2.
==2653== at 0x4E5E0F2: __gmpn_addmul_1 (in /usr/local/lib/libgmp.so.10.3.2)
==2653== by 0x54F5D2: _ntl_gaorsmul_1(_ntl_gbigint_body*, long, long, _ntl_gbigint_body**) (lip.cpp:8200)
==2653== by 0x42F7E3: MulAddTo (ZZ.h:507)
==2653== by 0x42F7E3: operator() (DoubleCRT.cpp:730)
==2653== by 0x42F7E3: relaxed_exec_index<DoubleCRT::toPoly(NTL::ZZX&, const IndexSet&, bool) const::__lambda5> (BasicThreadPool.h:521)
==2653== by 0x42F7E3: DoubleCRT::toPoly(NTL::ZZX&, IndexSet const&, bool) const (DoubleCRT.cpp:741)
==2653== by 0x431BC9: toPoly (DoubleCRT.cpp:759)
==2653== by 0x431BC9: DoubleCRT::addPrimes(IndexSet const&) (DoubleCRT.cpp:322)
==2653== by 0x4332D0: DoubleCRT::breakIntoDigits(std::vector<DoubleCRT, std::allocator<DoubleCRT> >&, long) const (DoubleCRT.cpp:301)
==2653== by 0x446C05: Ctxt::keySwitchPart(CtxtPart const&, KeySwitch const&) (Ctxt.cpp:467)
==2653== by 0x446F89: Ctxt::reLinearize(long) (Ctxt.cpp:416)
==2653== by 0x44829D: Ctxt::smartAutomorph(long) (Ctxt.cpp:1008)
==2653== by 0x451DB7: EncryptedArrayDerived<PA_GF2>::rotate1D(Ctxt&, long, long, bool) const (EncryptedArray.cpp:97)
==2653== by 0x41111D: decRowShift(Ctxt&, std::vector<DoubleCRT, std::allocator<DoubleCRT> > const&, EncryptedArrayDerived<PA_GF2> const&) (homAES.cpp:713)
==2653== by 0x4132E9: HomAES::homAESdec(std::vector<Ctxt, std::allocator<Ctxt> >&, std::vector<Ctxt, std::allocator<Ctxt> > const&) const (homAES.cpp:316)
==2653== by 0x406567: main (Test_AES.cpp:248)
==2653== Your program just tried to execute an instruction that Valgrind
==2653== did not recognise. There are two possible reasons for this.
==2653== 1. Your program has a bug and erroneously jumped to a non-code
==2653== location. If you are running Memcheck and you just saw a
==2653== warning about a bad jump, it's probably your program's fault.
==2653== 2. The instruction is legitimate but Valgrind doesn't handle it,
==2653== i.e. it's Valgrind's fault. If you think this is the case or
==2653== you are not sure, please let us know and we'll try to fix it.
==2653== Either way, Valgrind will now raise a SIGILL signal which will
==2653== probably kill your program.
==2653==
==2653== Process terminating with default action of signal 4 (SIGILL)
==2653== Illegal opcode at address 0x4E5E0F2
==2653== at 0x4E5E0F2: __gmpn_addmul_1 (in /usr/local/lib/libgmp.so.10.3.2)
==2653== by 0x54F5D2: _ntl_gaorsmul_1(_ntl_gbigint_body*, long, long, _ntl_gbigint_body**) (lip.cpp:8200)
==2653== by 0x42F7E3: MulAddTo (ZZ.h:507)
==2653== by 0x42F7E3: operator() (DoubleCRT.cpp:730)
==2653== by 0x42F7E3: relaxed_exec_index<DoubleCRT::toPoly(NTL::ZZX&, const IndexSet&, bool) const::__lambda5> (BasicThreadPool.h:521)
==2653== by 0x42F7E3: DoubleCRT::toPoly(NTL::ZZX&, IndexSet const&, bool) const (DoubleCRT.cpp:741)
==2653== by 0x431BC9: toPoly (DoubleCRT.cpp:759)
==2653== by 0x431BC9: DoubleCRT::addPrimes(IndexSet const&) (DoubleCRT.cpp:322)
==2653== by 0x4332D0: DoubleCRT::breakIntoDigits(std::vector<DoubleCRT, std::allocator<DoubleCRT> >&, long) const (DoubleCRT.cpp:301)
==2653== by 0x446C05: Ctxt::keySwitchPart(CtxtPart const&, KeySwitch const&) (Ctxt.cpp:467)
==2653== by 0x446F89: Ctxt::reLinearize(long) (Ctxt.cpp:416)
==2653== by 0x44829D: Ctxt::smartAutomorph(long) (Ctxt.cpp:1008)
==2653== by 0x451DB7: EncryptedArrayDerived<PA_GF2>::rotate1D(Ctxt&, long, long, bool) const (EncryptedArray.cpp:97)
==2653== by 0x41111D: decRowShift(Ctxt&, std::vector<DoubleCRT, std::allocator<DoubleCRT> > const&, EncryptedArrayDerived<PA_GF2> const&) (homAES.cpp:713)
==2653== by 0x4132E9: HomAES::homAESdec(std::vector<Ctxt, std::allocator<Ctxt> >&, std::vector<Ctxt, std::allocator<Ctxt> > const&) const (homAES.cpp:316)
==2653== by 0x406567: main (Test_AES.cpp:248)
Dummy encryptHE dummy encrypt ==2653==
==2653== HEAP SUMMARY:
==2653== in use at exit: 26,478,071 bytes in 16,450 blocks
==2653== total heap usage: 183,015 allocs, 166,565 frees, 110,651,486 bytes allocated
==2653==
==2653== LEAK SUMMARY:
==2653== definitely lost: 0 bytes in 0 blocks
==2653== indirectly lost: 0 bytes in 0 blocks
==2653== possibly lost: 24,531,862 bytes in 9,564 blocks
==2653== still reachable: 1,946,209 bytes in 6,886 blocks
==2653== suppressed: 0 bytes in 0 blocks
==2653== Rerun with --leak-check=full to see details of leaked memory
==2653==
==2653== For counts of detected and suppressed errors, rerun with: -v
==2653== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
Illegal instruction (core dumped)
LSCPU:
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 2
On-line CPU(s) list: 0,1
Thread(s) per core: 1
Core(s) per socket: 2
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 63
Stepping: 2
CPU MHz: 2394.420
BogoMIPS: 4788.84
Hypervisor vendor: Microsoft
Virtualization type: full
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 30720K
NUMA node0 CPU(s): 0,1
/程序/cpuinfo
处理器0：
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm abm invpcid_single kaiser fsgsbase bmi1 avx2 smep bmi2 erms invpcid xsaveopt
处理器1：
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm abm invpcid_single kaiser fsgsbase bmi1 avx2 smep bmi2 erms invpcid xsaveopt`
最佳答案
我在gmpn-addmul-1（这是gmp库）中遇到了一个类似的非法指令错误。
它在云虚拟PC上。
一个使用gmp的程序工作正常，但在我收到这个错误后重新启动vpc。我相信vpc处理器的架构在新的重启时已经改变了。
我通过从configure阶段重建libgmp解决了这个问题（当proc arch被检测到时）