ubuntu移植crypto++到Android平臺
阿新 • • 發佈：2018-11-01
簡書排版
http://www.jianshu.com/p/eaeeed899251
ubuntu移植crypto++到Android平臺
官方Wiki
http://www.cryptopp.com/wiki/Android_(Command_Line)
這個移植比較簡單，官方直接就有文件了，而且有現成的指令碼。
setenv-android.sh
#!/usr/bin/env bash
# ====================================================================
# Sets the cross compile environment for Android 將ANDROID_NDK_ROOT改成自己本機上的
有兩個引數
armeabi
armeabi-v7a
armeabi-v7a-hard
arm64-v8a
mips
mips64
x86
x86_64第二個引數
stlport (shared)
stlport-static
stlport-shared
gnu (shared)
gnu-static
gnu-shared生成動態庫和靜態庫
make -f GNUmakefile-cross static dynamic最後官方的指令碼
build-all-android.sh
#!/bin/bash
for arch in armeabi armeabi-v7a armeabi-v7a-hard arm64-v8a mips mips64 x86 x86_64
do
. ./setenv-android.sh $arch stlport
if [ "$?" -eq "0" ]; then
make -f GNUmakefile-cross distclean
make -f GNUmakefile-cross static dynamic
sudo make -f GNUmakefile-cross install PREFIX=/usr/local/cryptopp/android-$arch
fi
done直接編譯生成即可
在/usr/local/cryptopp
測試一下
新建JNI目錄
將libcryptopp.a和include目錄複製進去
新建Android.mk
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := cryptopp
LOCAL_SRC_FILES := libcryptopp.a
include $(PREBUILT_STATIC_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := main
LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
LOCAL_SRC_FILES := main.cpp
LOCAL_CPPFLAGS := -fexceptions
LOCAL_STATIC_LIBRARIES := cryptopp
LOCAL_CFLAGS += -pie -fPIE
LOCAL_LDFLAGS += -pie -fPIE
include $(BUILD_EXECUTABLE)新建Application.mk
APP_ABI := armeabi
APP_PLATFORM := 12
APP_CPPFLAGS += -fexceptions -frtti
APP_STL := stlport_static新建原始碼檔案main.cpp
#include <cryptopp/randpool.h>
#include <cryptopp/rsa.h>
#include <cryptopp/hex.h>
#include <cryptopp/files.h>
#include <iostream>
using namespace std;
using namespace CryptoPP;
//------------------------
// 函式宣告
//------------------------
void GenerateRSAKey(unsigned int keyLength, const char *privFilename, const char *pubFilename, const char *seed);
string RSAEncryptString(const char *pubFilename, const char *seed, const char *message);
string RSADecryptString(const char *privFilename, const char *ciphertext);
RandomPool & GlobalRNG();
//------------------------
// 主程式
//------------------------
int main()
{
char priKey[128] = {0};
char pubKey[128] = {0};
char seed[1024] = {0};
// 生成 RSA 金鑰對
strcpy(priKey, "pri"); // 生成的私鑰檔案
strcpy(pubKey, "pub"); // 生成的公鑰檔案
strcpy(seed, "seed");
GenerateRSAKey(1024, priKey, pubKey, seed);
//RSA 加解密
char message[1024] = "Hello World ...";
cout<<"Origin Text:\t"<< message <<endl<<endl;
string encryptedText = RSAEncryptString(pubKey, seed, message); // RSA 加密
cout<<"Encrypted Text:\t"<<encryptedText<<endl<<endl;
string decryptedText = RSADecryptString(priKey, encryptedText.c_str()); // RSA 解密
cout<<"Decrypted Text:\t"<<decryptedText<<endl<<endl;
return 0;
}
//------------------------
//生成 RSA 金鑰對
//------------------------
void GenerateRSAKey(unsigned int keyLength, const char *privFilename, const char *pubFilename, const char *seed)
{
RandomPool randPool;
randPool.Put((byte *)seed, strlen(seed));
RSAES_OAEP_SHA_Decryptor priv(randPool, keyLength);
HexEncoder privFile(new FileSink(privFilename));
priv.DEREncode(privFile);
privFile.MessageEnd();
RSAES_OAEP_SHA_Encryptor pub(priv);
HexEncoder pubFile(new FileSink(pubFilename));
pub.DEREncode(pubFile);
pubFile.MessageEnd();
}
//------------------------
// RSA 加密
//------------------------
string RSAEncryptString(const char *pubFilename, const char *seed, const char *message)
{
FileSource pubFile(pubFilename, true, new HexDecoder);
RSAES_OAEP_SHA_Encryptor pub(pubFile);
RandomPool randPool;
randPool.Put((byte *)seed, strlen(seed));
string result;
StringSource(message, true, new PK_EncryptorFilter(randPool, pub, new HexEncoder(new StringSink(result))));
return result;
}
//------------------------
// RSA 解密
//------------------------
string RSADecryptString(const char *privFilename, const char *ciphertext)
{
FileSource privFile(privFilename, true, new HexDecoder);
RSAES_OAEP_SHA_Decryptor priv(privFile);
string result;
StringSource(ciphertext, true, new HexDecoder(new PK_DecryptorFilter(GlobalRNG(), priv, new StringSink(result))));
return result;
}
//------------------------
// 定義全域性的隨機數池
//------------------------
RandomPool & GlobalRNG()
{
static RandomPool randomPool;
return randomPool;
} 
接著編譯
ndk-build將生成的main檔案push到手機內，執行
