android_aec256_cbc_encrypt

.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="src" path="gen"/>
+	<classpathentry kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/>
+	<classpathentry exported="true" kind="con" path="com.android.ide.eclipse.adt.LIBRARIES"/>
+	<classpathentry exported="true" kind="con" path="com.android.ide.eclipse.adt.DEPENDENCIES"/>
+	<classpathentry kind="output" path="bin/classes"/>
+</classpath>

.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>android_aes256_cbc_encrypt</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.ResourceManagerBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.PreCompilerBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.ApkBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>com.android.ide.eclipse.adt.AndroidNature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.biancity.aes256test"
+    android:versionCode="1"
+    android:versionName="1.0" >
+
+    <uses-sdk
+        android:minSdkVersion="8"
+        android:targetSdkVersion="22" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@drawable/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@style/AppTheme" >
+        <activity
+            android:name=".MainActivity"
+            android:label="@string/app_name" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

bin/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.biancity.aes256test"
+    android:versionCode="1"
+    android:versionName="1.0" >
+
+    <uses-sdk
+        android:minSdkVersion="8"
+        android:targetSdkVersion="22" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@drawable/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@style/AppTheme" >
+        <activity
+            android:name=".MainActivity"
+            android:label="@string/app_name" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

gen/com/biancity/aes256test/BuildConfig.java

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+/** Automatically generated file. DO NOT MODIFY */
+package com.biancity.aes256test;
+
+public final class BuildConfig {
+    public final static boolean DEBUG = true;
+}

gen/com/biancity/aes256test/R.java

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+/* AUTO-GENERATED FILE.  DO NOT MODIFY.
+ *
+ * This class was automatically generated by the
+ * aapt tool from the resource data it found.  It
+ * should not be modified by hand.
+ */
+
+package com.biancity.aes256test;
+
+public final class R {
+    public static final class attr {
+    }
+    public static final class dimen {
+        /**  Default screen margins, per the Android Design guidelines. 
+
+         Example customization of dimensions originally defined in res/values/dimens.xml
+         (such as screen margins) for screens with more than 820dp of available width. This
+         would include 7" and 10" devices in landscape (~960dp and ~1280dp respectively).
+    
+         */
+        public static final int activity_horizontal_margin=0x7f040000;
+        public static final int activity_vertical_margin=0x7f040001;
+    }
+    public static final class drawable {
+        public static final int ic_launcher=0x7f020000;
+    }
+    public static final class id {
+        public static final int text1=0x7f070000;
+        public static final int text2=0x7f070001;
+        public static final int text3=0x7f070002;
+    }
+    public static final class layout {
+        public static final int activity_main=0x7f030000;
+    }
+    public static final class string {
+        public static final int action_settings=0x7f050002;
+        public static final int app_name=0x7f050000;
+        public static final int hello_world=0x7f050001;
+    }
+    public static final class style {
+        /** 
+        Base application theme, dependent on API level. This theme is replaced
+        by AppBaseTheme from res/values-vXX/styles.xml on newer devices.
+    
+
+            Theme customizations available in newer API levels can go in
+            res/values-vXX/styles.xml, while customizations related to
+            backward-compatibility can go here.
+        
+         */
+        public static final int AppBaseTheme=0x7f060000;
+        /**  Application theme. 
+ All customizations that are NOT specific to a particular API-level can go here. 
+         */
+        public static final int AppTheme=0x7f060001;
+    }
+}

jni/Android.mk

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+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
+
+LOCAL_MODULE := EncryptMsg
+
+LOCAL_SRC_FILES := \
+EncryptMsg.c \
+aes256.c \
+base64.c \
+encode.c
+
+LOCAL_LDLIBS :=  -llog
+
+include $(BUILD_SHARED_LIBRARY)

jni/Application.mk

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+APP_CFLAGS += -Wno-error=format-security

jni/EncryptMsg.c

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+/**
+ * `EncryptMsg.c'
+ *
+ * copyright (c) 2015 https://github.com/Mozhuowen
+ */
+#include "aes256.h"
+#include "base64.h"
+#include "b64.h"
+
+#ifndef LOGE
+#define LOGE(...){\
+	if (1) {\
+		__android_log_print(ANDROID_LOG_ERROR,"jni---get---key",__VA_ARGS__);\
+	}\
+	}
+#endif
+
+jstring getImportInfo(JNIEnv *, jstring,jint);
+jstring getDecrypt(JNIEnv *,jstring);
+jstring charToJstring(JNIEnv* envPtr, char *src);
+jbyteArray charToJbyteArray(JNIEnv* env,char *src,int bufflen);
+
+JNIEXPORT
+jbyteArray JNICALL Java_com_biancity_aes256test_EncryptUtil_getImportantInfoByJNI(
+		JNIEnv *env, jobject thiz, jstring mingwen,jint ji) {
+
+	return getImportInfo(env, mingwen,ji);
+}
+
+jbyteArray getImportInfo(JNIEnv* envPtr, jstring mingwen,jint ji) {
+//	LOGE("enter getImportInfo method ok!");
+	if (ji == 1)
+		return getDecrypt(envPtr, mingwen);
+
+	JNIEnv env = *envPtr;
+	const int BLOCK_SIZE = 32;
+
+	//encrypt key
+	unsigned char key[32] = {0x6D,0xA7,0x79,0x1D,0xF8,0x21,0x8A,0x39,0x25,0x9A,
+			0x7A,0x29,0xAA,0xBB,0x2D,0xBA,0xCF,0xFC,0x31,0x2D,0x74,0xDB,0x7E,0x39,
+			0xEB,0xBF,0x7C,0x10,0x04,0x00,0x83,0x61};
+
+//	LOGE(key);
+
+	//****************************************开始加密******************************************************
+	//1.初始化数据
+	//初始化向量
+	uint8_t iv[16] = {0x6D,0xA7,0x1D,0x79,0xF8,0x21,0x8A,0x39,0x25,0x9A,0x7A,0x29,0xAA,0xBB,0x2D,0xBA};
+
+	//初始化加密参数
+	aes256_context ctx;
+	aes256_init(&ctx, key);
+
+	//2.将jstring转为char
+	const char *mwChar = env->GetStringUTFChars(envPtr, mingwen, JNI_FALSE);
+
+	//3.分组填充加密
+	int i;
+	int mwSize = strlen(mwChar);
+	int remainder = mwSize % BLOCK_SIZE;
+	jbyteArray entryptString;
+	if (mwSize < BLOCK_SIZE) {	//小于32字节，填充32字节，后面填充几个几
+		uint8_t input[BLOCK_SIZE];
+		for (i = 0; i < BLOCK_SIZE; i++) {
+			if (i < mwSize) {
+				input[i] = mwChar[i];
+			} else {
+				input[i] = BLOCK_SIZE - mwSize;
+			}
+		}
+		//加密
+		uint8_t output[BLOCK_SIZE];
+		aes256_encrypt_cbc(&ctx, input, iv, output);
+		//base64加密后然后jstring格式输出
+		char *enc = base64_encode(output, sizeof(output));
+//		entryptString = charToJstring(envPtr, enc);
+		entryptString = charToJbyteArray(envPtr,enc,strlen(enc));
+
+		free(enc);
+	} else {	//如果是32的倍数，填充32字节，后面填充0x20
+		int group = mwSize / BLOCK_SIZE;
+		int size = BLOCK_SIZE * (group + 1);
+		uint8_t input[size];
+		for (i = 0; i < size; i++) {
+			if (i < mwSize) {
+				input[i] = mwChar[i];
+			} else {
+				if (remainder == 0) {
+					input[i] = 0x20;
+				} else {	//如果不足32位 少多少位就补几个几  如：少4为就补4个4 以此类推
+					int dif = BLOCK_SIZE - mwSize;
+					input[i] = dif;
+				}
+			}
+		}
+		//加密
+		uint8_t output[size];
+		aes256_encrypt_cbc(&ctx, input, iv, output);
+		//base64加密后然后jstring格式输出
+		char *enc = base64_encode(output, sizeof(output));
+//		entryptString = charToJstring(envPtr, enc);
+		entryptString = charToJbyteArray(envPtr,enc,strlen(enc));
+
+		free(enc);
+	}
+
+	//释放mwChar
+	env->ReleaseStringUTFChars(envPtr, mingwen, mwChar);
+
+	return entryptString;
+}
+
+jbyteArray getDecrypt(JNIEnv *envPtr,jstring encryptstr)
+{
+//	LOGE("enter getDecrypt ok!");
+	JNIEnv env = *envPtr;
+
+	int i;
+	const int BLOCK_SIZE = 32;
+	unsigned char key[32] = {0x6D,0xA7,0x79,0x1D,0xF8,0x21,0x8A,0x39,0x25,0x9A,
+			0x7A,0x29,0xAA,0xBB,0x2D,0xBA,0xCF,0xFC,0x31,0x2D,0x74,0xDB,0x7E,0x39,
+			0xEB,0xBF,0x7C,0x10,0x04,0x00,0x83,0x61};
+
+	//	LOGE(key);
+
+	//****************************************开始加密******************************************************
+	//1.初始化数据
+	//初始化向量
+	uint8_t iv[16] = {0x6D,0xA7,0x1D,0x79,0xF8,0x21,0x8A,0x39,0x25,0x9A,0x7A,0x29,0xAA,0xBB,0x2D,0xBA};
+
+	//初始化加密参数
+	aes256_context ctx;
+	aes256_init(&ctx, key);
+
+	//2.将jstring转为char
+	const char *encryptChar = env->GetStringUTFChars(envPtr, encryptstr, JNI_FALSE);
+//	LOGE("encryptChar lenght: %d",strlen(encryptChar));
+	basedata decodebase64 = base64_decode(encryptChar,strlen(encryptChar));
+//	LOGE("decodebase64info lenght: %d",decodebase64.len);
+	int targetstrlen = decodebase64.len;
+//	LOGE("decodebase64 ok!");
+	int len = decodebase64.len;
+	unsigned char resbuf[len];
+	int ii;
+	for (ii=0;ii<len;ii++) {
+		resbuf[ii] = *(decodebase64.data + ii);
+	}
+//	LOGE("resbuf lenght: %d",sizeof(resbuf));
+//	LOGE("resbuf first and last num is %X %X",resbuf[0],resbuf[len-1]);
+	//3.解密
+	uint8_t output[len];
+	aes256_decrypt_cbc(&ctx, resbuf, iv, output,len);
+//	LOGE("aes256_decrypt_cbc ok!");
+//	LOGE("output lenght: %d",sizeof(output));
+//	LOGE("output last num is %X",output[len-1]);
+//	return encryptstr;
+	//4.去除补位padding
+	uint8_t pad = output[len-1];
+	if (pad <1 || pad > 0x20)
+		pad = 0;
+	int reslen = len - pad;
+	uint8_t resultChar[reslen];
+	for (i=0;i<reslen;i++) {
+		resultChar[i] = output[i];
+	}
+//	LOGE("ripe padding ok!");
+//	LOGE("reslutChar lenght: %d",sizeof(resultChar));
+//
+//	//释放mwChar
+	env->ReleaseStringUTFChars(envPtr, encryptstr,encryptChar);
+	free(decodebase64.data);
+
+	return charToJbyteArray(envPtr,resultChar,reslen);
+}
+
+jstring charToJstring(JNIEnv* envPtr, char src[]) {
+	JNIEnv env = *envPtr;
+
+	jsize len = strlen(src);
+	jclass clsstring = env->FindClass(envPtr, "java/lang/String");
+	jstring strencode = env->NewStringUTF(envPtr, "UTF-8");
+	jmethodID mid = env->GetMethodID(envPtr, clsstring, "<init>",
+			"([BLjava/lang/String;)V");
+	jbyteArray barr = env->NewByteArray(envPtr, len);
+	env->SetByteArrayRegion(envPtr, barr, 0, len, (jbyte*) src);
+
+	return (jstring) env->NewObject(envPtr, clsstring, mid, barr, strencode);
+}
+jbyteArray charToJbyteArray(JNIEnv* env,char *src,int buffer_size) {
+	int i;
+	unsigned char buff[buffer_size];
+	for (i=0;i<buffer_size;i++)
+		buff[i] = src[i];
+	jbyteArray array = (*env)->NewByteArray(env,buffer_size);
+	(*env)->SetByteArrayRegion(env,array,0,buffer_size,buff);
+	return array;
+}