[英]Seg fault when using Botan
I'm just getting started with Botan.我刚开始接触Botan。 I have included the
botan_all.h
in my code file and am linking to the libbotan-2.a
library when building.我已将
botan_all.h
包含在我的代码文件中,并在构建时链接到libbotan-2.a
库。
Here is the relevant part of main.cpp:这是 main.cpp 的相关部分:
#include "botan_all.h"
int main(int argc, char *argv[])
{
const std::vector<uint8_t> key = Botan::hex_decode("2B7E151628AED2A6ABF7158809CF4F3C");
std::unique_ptr<Botan::Cipher_Mode> enc = Botan::Cipher_Mode::create("AES-128/CBC/PKCS7", Botan::ENCRYPTION);
enc->set_key(key);
}
The enc->set_key(key)
causes a seg fault. enc->set_key(key)
会导致段错误。 What am I missing?我错过了什么?
This is likely caused by your Botan version not being build with support for the specified algorithm.这可能是由于您的 Botan 版本未在支持指定算法的情况下构建。 The method
CipherMode::create
returns a nullptr
if the specified algorithm is not found ( reference ).如果未找到指定的算法( 参考),则
CipherMode::create
方法返回一个nullptr
。 You would then have to check the result, eg:然后您必须检查结果,例如:
if (enc == nullptr) {
throw std::runtime_error{"Cipher not supported!"};
}
Alternatively, you could use CipherMode::create_or_throw
( reference ):或者,您可以使用
CipherMode::create_or_throw
( 参考):
Botan::Cipher_Mode::create_or_throw("AES-128/CBC/PKCS7", Botan::ENCRYPTION);
You can also check your Botan headers for support for these specific algorithms, by checking if BOTAN_HAS_AES
and BOTAN_HAS_MODE_CBC
are defined.您还可以通过检查
BOTAN_HAS_AES
和BOTAN_HAS_MODE_CBC
是否已定义来检查您的 Botan 标头是否支持这些特定算法。 If these are not available, you would have to ensure that when you compile botan, you include AES and CBC support, eg with:如果这些不可用,则必须确保在编译 botan 时包含 AES 和 CBC 支持,例如:
./configure.py --enable-modules=aes,cbc,...
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