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Macbook Air 安装crypto++并用Xcode实现的方法
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适用于初学密码学的同学们。
密码学相关问题：如请用RSA算法加密什么，要求是用crypto++或者Java Crytography Architecture（JCA）实现。
前者就是用C++实现的库，后者是Java实现的库。很多同学像我一样，对C++可能较为熟悉，所以毅然的选择了前者。
问题是不了解crypto++这个东西是什么，怎么用等等。
先解决一下是什么，怎么安装吧！
下面是链接，注意都是在终端下进行的。
https://www.cryptopp.com/wiki/GNUmakefile#config.recommend
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这三行是从git里直接下载包，链接里能找的到这三行，下面还需配置和测试啥的，泡杯茶慢慢来。
git clone git://github.com/weidai11/cryptopp.git cd cryptopp make -
导入。
$ export CXXFLAGS="-DNDEBUG -g2 -O2 -stdlib=libc++" $ make g++$ export CXXFLAGS="-DNDEBUG -g2 -O2 -stdlib=libc++" $ make g++ -DNDEBUG -g2 -O2 -stdlib=libc++ -fPIC -march=native -pipe -c cryptlib.cpp g++ -DNDEBUG -g2 -O2 -stdlib=libc++ -fPIC -march=native -pipe -c cpu.cpp -
Testing the Library
# Validation Suite $ ./cryptest.exe v ... All tests passed! Test ended at Sun Jan 3 08:50:06 2016 And: # Test Vectors $ ./cryptest.exe tv all ... Tests complete. Total tests = 4111. Failed tests = 0. -
构建和安装共三步
·first# Clean previous stuff $ make clean·second
# Install directory, not the data directory $ make install PREFIX=/tmp/local/ mkdir -p /tmp/local/include/cryptopp cp *.h /tmp/local/include/cryptopp chmod 755 /tmp/local/include/cryptopp chmod 644 /tmp/local/include/cryptopp/*.h mkdir -p /tmp/local/lib cp libcryptopp.a /tmp/local/lib chmod 644 /tmp/local/lib/libcryptopp.a mkdir -p /tmp/local/bin cp cryptest.exe /tmp/local/bin chmod 755 /tmp/local/bin/cryptest.exe mkdir -p /tmp/local/share/cryptopp cp -r TestData /tmp/local/share/cryptopp cp -r TestVectors /tmp/local/share/cryptopp chmod 755 /tmp/local/share/cryptopp chmod 755 /tmp/local/share/cryptopp/TestData chmod 755 /tmp/local/share/cryptopp/TestVectors chmod 644 /tmp/local/share/cryptopp/TestData/*.dat chmod 644 /tmp/local/share/cryptopp/TestVectors/*.txt·third
$ cd /tmp/local/bin/ $ ./cryptest.exe v Using seed: 1451851092 Testing Settings... ... All tests passed! Test ended at Sun Jan 3 08:50:06 2016
再解决一下怎么用。
https://github.com/zfwang96/RSA-Cryptopp/
这个链接用的是RSA加密算法.
下载一下中间两个文件到cryptopp相同的目录下。
接下来你就按照下面的终端口令运行即可。不懂的命令可以度娘啊。
Good: the following will compile and link against your copy of the library. Your copy of the library is located in ./cryptopp.
$ ls
cryptopp test.cxx
$ g++ -DNDEBUG -g2 -O2 -I . RSA_Gen.cpp -o RSA_Gen ./cryptopp/libcryptopp.a
$ g++ -DNDEBUG -g2 -O2 -I . RSA.cpp -o RSA ./cryptopp/libcryptopp.a
$ ./RSA_Gen
86 bits saved in plain.txt
43 byte(s) Random String Generated Successfully in plain.txt
1024 bits saved in key.txt
1024 bits saved in d.txt
8 bits saved in e.txt
./RSA -e
Plaintext is the following:
1?c???zw_????d=?d?b
Encryption Success. Ciphertext is the following:
?՟??j?{???K??n?S;S?+C?r???ň????"?|??D$?;??
?gݲ???<?????Aq?[??1???y??7?m????Yf?
./RSA -d
Ciphertext is the following:
?՟??j?{???K??n?S;S?+C?r???ň????"?|??D$?;??
?gݲ???<?????Aq?[??1???y??7?m????Yf?
Descryption Success. Plaintext is the following:
1?c???zw_????d=?d?b
Encryption Success.我们知道加密成功了。
Descryption Success.我们知道解密成功了。