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天下 — Mon, 30 Aug 2021 13:39:00 GMT

#pragma once #include //for int8_t #include //for memcmp #include //for intrinsics for AES-NI //compile using gcc and following arguments: -g;-O0;-Wall;-msse2;-msse;-march=native;-maes //internal stuff //macros #define DO_ENC_BLOCK(m,k) \ do{\ m = _mm_xor_si128 (m, k[ 0]); \ m = _mm_aesenc_si128 (m, k[ 1]); \ m = _mm_aesenc_si128 (m, k[ 2]); \ m = _mm_aesenc_si128 (m, k[ 3]); \ m = _mm_aesenc_si128 (m, k[ 4]); \ m = _mm_aesenc_si128 (m, k[ 5]); \ m = _mm_aesenc_si128 (m, k[ 6]); \ m = _mm_aesenc_si128 (m, k[ 7]); \ m = _mm_aesenc_si128 (m, k[ 8]); \ m = _mm_aesenc_si128 (m, k[ 9]); \ m = _mm_aesenclast_si128(m, k[10]);\ }while(0) #define DO_DEC_BLOCK(m,k) \ do{\ m = _mm_xor_si128 (m, k[10+0]); \ m = _mm_aesdec_si128 (m, k[10+1]); \ m = _mm_aesdec_si128 (m, k[10+2]); \ m = _mm_aesdec_si128 (m, k[10+3]); \ m = _mm_aesdec_si128 (m, k[10+4]); \ m = _mm_aesdec_si128 (m, k[10+5]); \ m = _mm_aesdec_si128 (m, k[10+6]); \ m = _mm_aesdec_si128 (m, k[10+7]); \ m = _mm_aesdec_si128 (m, k[10+8]); \ m = _mm_aesdec_si128 (m, k[10+9]); \ m = _mm_aesdeclast_si128(m, k[0]);\ }while(0) #define AES_128_key_exp(k, rcon) aes_128_key_expansion(k, _mm_aeskeygenassist_si128(k, rcon)) static __m128i aes_128_key_expansion(__m128i key, __m128i keygened) { keygened = _mm_shuffle_epi32(keygened, _MM_SHUFFLE(3,3,3,3)); key = _mm_xor_si128(key, _mm_slli_si128(key, 4)); key = _mm_xor_si128(key, _mm_slli_si128(key, 4)); key = _mm_xor_si128(key, _mm_slli_si128(key, 4)); return _mm_xor_si128(key, keygened); } //public API static void aes128_load_key_enc_only(uint8_t *enc_key, __m128i *key_schedule) { key_schedule[0] = _mm_loadu_si128((const __m128i*) enc_key); key_schedule[1] = AES_128_key_exp(key_schedule[0], 0x01); key_schedule[2] = AES_128_key_exp(key_schedule[1], 0x02); key_schedule[3] = AES_128_key_exp(key_schedule[2], 0x04); key_schedule[4] = AES_128_key_exp(key_schedule[3], 0x08); key_schedule[5] = AES_128_key_exp(key_schedule[4], 0x10); key_schedule[6] = AES_128_key_exp(key_schedule[5], 0x20); key_schedule[7] = AES_128_key_exp(key_schedule[6], 0x40); key_schedule[8] = AES_128_key_exp(key_schedule[7], 0x80); key_schedule[9] = AES_128_key_exp(key_schedule[8], 0x1B); key_schedule[10] = AES_128_key_exp(key_schedule[9], 0x36); } static void aes128_load_key(uint8_t *enc_key, __m128i *key_schedule) { aes128_load_key_enc_only(enc_key, key_schedule); // generate decryption keys in reverse order. // k[10] is shared by last encryption and first decryption rounds // k[0] is shared by first encryption round and last decryption round (and is the original user key) // For some implementation reasons, decryption key schedule is NOT the encryption key schedule in reverse order key_schedule[11] = _mm_aesimc_si128(key_schedule[9]); key_schedule[12] = _mm_aesimc_si128(key_schedule[8]); key_schedule[13] = _mm_aesimc_si128(key_schedule[7]); key_schedule[14] = _mm_aesimc_si128(key_schedule[6]); key_schedule[15] = _mm_aesimc_si128(key_schedule[5]); key_schedule[16] = _mm_aesimc_si128(key_schedule[4]); key_schedule[17] = _mm_aesimc_si128(key_schedule[3]); key_schedule[18] = _mm_aesimc_si128(key_schedule[2]); key_schedule[19] = _mm_aesimc_si128(key_schedule[1]); } static void aes128_enc(__m128i *key_schedule, uint8_t *plainText,uint8_t *cipherText) { __m128i m = _mm_loadu_si128((__m128i *) plainText); DO_ENC_BLOCK(m,key_schedule); _mm_storeu_si128((__m128i *) cipherText, m); } static void aes128_dec(__m128i *key_schedule, uint8_t *cipherText,uint8_t *plainText) { __m128i m = _mm_loadu_si128((__m128i *) cipherText); DO_DEC_BLOCK(m,key_schedule); _mm_storeu_si128((__m128i *) plainText, m); } //return 0 if no error //1 if encryption failed //2 if decryption failed //3 if both failed static int aes128_self_test(void) { uint8_t plain[] = {0x32, 0x43, 0xf6, 0xa8, 0x88, 0x5a, 0x30, 0x8d, 0x31, 0x31, 0x98, 0xa2, 0xe0, 0x37, 0x07, 0x34}; uint8_t enc_key[] = {0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c}; uint8_t cipher[] = {0x39, 0x25, 0x84, 0x1d, 0x02, 0xdc, 0x09, 0xfb, 0xdc, 0x11, 0x85, 0x97, 0x19, 0x6a, 0x0b, 0x32}; uint8_t computed_cipher[16]; uint8_t computed_plain[16]; int out=0; __m128i key_schedule[20]; aes128_load_key(enc_key,key_schedule); aes128_enc(key_schedule,plain,computed_cipher); aes128_dec(key_schedule,cipher,computed_plain); if(memcmp(cipher,computed_cipher,sizeof(cipher))) out=1; if(memcmp(plain,computed_plain,sizeof(plain))) out|=2; return out; }

天下 2021-08-30 21:39 发表评论

Qt状态机代码例子

天下 — Wed, 31 Mar 2021 13:12:00 GMT

#include "stdafx.h"

#include "qtapplication03.h"

#include "ButtonChanged.h"

#include

int main(int argc, char *argv[])

{

QApplication a(argc, argv);

QPushButton button("State Machine");

QStateMachine machine;

ButtonChanged* bc = new ButtonChanged(&machine);

QState* s1 = new QState(&machine);

QState* s2 = new QState(&machine);

QState* s3 = new QState(&machine);

s1->assignProperty(&button, "geometry", QRect(100, 100, 120, 50));

s2->assignProperty(&button, "geometry", QRect(100, 100, 220, 50));

s3->assignProperty(&button, "geometry", QRect(100, 100, 320, 50));

s1->addTransition(&button, SIGNAL(clicked()), s2);

s2->addTransition(&button, SIGNAL(clicked()), s3);

s3->addTransition(&button, SIGNAL(clicked()), s1);

machine.setInitialState(s1);

machine.start();

button.show();

QObject::connect(s3, &QState::entered, bc, &ButtonChanged::changed);

return a.exec();

}

天下 2021-03-31 21:12 发表评论

JavaFX BindingTest3

天下 — Wed, 01 Jan 2020 05:47:00 GMT

package application.chapter2;

import javafx.beans.binding.NumberBinding;
import javafx.beans.property.IntegerProperty;
import javafx.beans.property.SimpleIntegerProperty;
import javafx.beans.value.ObservableValue;

public class BindingTest3 {

    public static void main(String[] args) {
        IntegerProperty x = new SimpleIntegerProperty(100);
        IntegerProperty y = new SimpleIntegerProperty(200);
        // Create a binding: sum = x + y
        NumberBinding sum = x.add(y);
        System.out.println("After creating sum");
        System.out.println("sum.isValid(): " + sum.isValid());
        // Let us get the value of sum, so it computes its value and
        // becomes valid
        int value = sum.intValue();
        System.out.println("\nAfter requesting value");
        System.out.println("sum.isValid(): " + sum.isValid());
        System.out.println("sum = " + value);
        // Change the value of x
        x.set(250);
        System.out.println("\nAfter changing x");
        System.out.println("sum.isValid(): " + sum.isValid());
        // Get the value of sum again
        value = sum.intValue();
        System.out.println("\nAfter requesting value");
        System.out.println("sum.isValid(): " + sum.isValid());
        System.out.println("sum = " + value);
    }
}

天下 2020-01-01 13:47 发表评论

JavaFX PropertyTest2

天下 — Wed, 01 Jan 2020 05:19:00 GMT

package application.chapter2;

import javafx.beans.property.IntegerProperty;
import javafx.beans.property.SimpleIntegerProperty;
import javafx.beans.value.ObservableValue;

public class PropertyTest2 {

    public static void main(String[] args) {
        IntegerProperty counter = new SimpleIntegerProperty(100);
        // Add an invalidation listener to the counter property
        counter.addListener(PropertyTest2::changed);
        System.out.println("Before changing the counter value-1");
        counter.set(101);
        System.out.println("After changing the counter value-1");
        /*
         * At this point counter property is invalid and further changes to its value
         * will not generate invalidation events.
         */
        System.out.println("\nBefore changing the counter value-2");
        counter.set(102);
        System.out.println("After changing the counter value-2");
        // Make the counter property valid by calling its get() method
        int value = counter.get();
        System.out.println("Counter value = " + value);
        /*
         * At this point counter property is valid and further changes to its value will
         * generate invalidation events.
         */
        // Try to set the same value
        System.out.println("\nBefore changing the counter value-3");
        counter.set(102);
        System.out.println("After changing the counter value-3");
        // Try to set a different value
        System.out.println("\nBefore changing the counter value-4");
        counter.set(103);
        System.out.println("After changing the counter value-4");
    }

    public static void changed(ObservableValueextends Number> prop,Number oldValue,Number newValue) {
        System.out.print("Counter changed: ");
        System.out.println("Old = " + oldValue + ", new = " + newValue);
    }
}

天下 2020-01-01 13:19 发表评论

2、Pass a string to/from Java to/from CTag(s): JNI

天下 — Fri, 06 Dec 2019 02:53:00 GMT

Pass a string to/from Java to/from CTag(s): JNI

To Java from C (as seen from the previous How-to) :

#include "JavaHowTo.h"

JNIEXPORT jstring JNICALL Java_JavaHowTo_sayHello
  (JNIEnv *env, jobject obj) {
    return  env->NewStringUTF("Hello world");
}
From Java to C : Suppose we have a Java Class
public class MyClass {
  public String sayHello(){
     return  "Hello world From Java";
  }
}

then from C, we want to call the Java sayHello() method which returns a String :

JNIEXPORT void JNICALL Java_JavaHowTo_sayHello(JNIEnv *env, jobject obj)
{
    const char *str;

    jclass myclass_class =(jclass) env->NewGlobalRef
         (env->FindClass ("MyClass"));

    // we need the MyClass constructor
    jmethodID constructorID = env->GetMethodID
         (myclass_class, "", "()V");

    // and the sayHello() method
    jmethodID methodID = env->GetMethodID
         (myclass_class, "sayHello", "()Ljava/lang/String;");

    // instanciate a MyClass object
    jobject myclass_object =  env->NewObject
         (myclass_class, constructorID);

    // call the sayHello() method
    jstring s = (jstring)  env->CallObjectMethod
         (myclass_object, methodID);

    // convert the Java String to use it in C
    str = env->GetStringUTFChars(s, 0);
    printf("%s" , str);
    env->ReleaseStringUTFChars(s, str);
}

The Java JNI wrapper would be

class JavaHowTo {
  public native void sayHello();
  static {
    System.loadLibrary("javahowto");
  }
}

And finally, to use it

public class JNIJavaHowTo {
  public static void main(String[] args) {
    JavaHowTo jht = new JavaHowTo();
    jht.sayHello();
    }
}

天下 2019-12-06 10:53 发表评论

1、Use native code through JNI (HelloWorld)

天下 — Fri, 06 Dec 2019 02:50:00 GMT

https://www.rgagnon.com/topics/java-jni.html

Use native code through JNI (HelloWorld)

Use native code through JNITag(s): JNI

With MSVC6, create a new Win32 DLL project (simple) and call it javahowto.

In the same directory create a java source called JavaHowTo.java

class JavaHowTo {
  public native String sayHello();
  static {
    System.loadLibrary("javahowto");
  }
}

Compile the Java program and use javah utility to generate the JavaHowTo.h header file.

javah -jni JavaHowTo

In MSVC6, add the JavaHowTo.h in your project header files

In the Tools - Options menu, set the include directories to include the Java JNI headers files. They are located in [jdk dir]\include and [jdk dir]\include\win32 directories

In the javahowto.cpp source, add

#include "JavaHowTo.h"

JNIEXPORT jstring JNICALL Java_JavaHowTo_sayHello
(JNIEnv *env, jobject obj) {
return env->NewStringUTF("Hello world");
}

Select the Release configuration and build the project.

Copy the javahowto.dll in the same directory as the java program.

Create this new java program

public class JNIJavaHowTo {
  public static void main(String[] args) {
    JavaHowTo jht = new JavaHowTo();
    System.out.println(jht.sayHello());
    }
}

Compile and execute.

天下 2019-12-06 10:50 发表评论

Oracle分页

天下 — Thu, 15 Aug 2019 08:32:00 GMT

Oracle分页

查询语句:
select * FROM A_WECHAT WHERE 1=1

查询记录��L��:
SELECT nvl(count(*),0) as totalNum
FROM (
    select * FROM A_WECHAT WHERE 1=1
) where 1=1

分页:

SELECT
    *
FROM
    (
        SELECT
            TIN.*, ROWNUM AS rowno
        FROM
            (
          select * FROM A_WECHAT WHERE 1=1 order by OPENID desc
            ) TIN
        WHERE
            ROWNUM <= 50     ) TOUT
WHERE
    TOUT.rowno >= 1

天下 2019-08-15 16:32 发表评论

c#条�g�~�译

天下 — Wed, 26 Jun 2019 10:03:00 GMT

Conditional compilation symbols

�~�译器命令行选项�Q�例如，/define:DEBUG�Q?

可以在VS2008的IDE�q�行讄��, Project Property--->Build--->Conditional compilation symbols(如果多个�U�研使用逗号隔开)

�pȝ��默认讄��?DEBUG �?TRACE

操作�pȝ��外壳�E�序中的环境变量�Q�例如，set DEBUG=1�Q��?/div>

源代码中的杂注（例如�Q�用于定义编译变量的 #define DEBUG�Q�以及用于取消定义它�?#undef DEBUG�Q��?/div>

必须在file的最前方讄��,#define debug或者组合操�?/div>

#if (Debug && Trace)

#define DebugAndTrace

#endif

ps:Conditional位于using System.Diagnostics;

什么情况下使用该标识符?

当程序中一个方法或属性不惛_��使用�?如果把它删掉��需要把引用的地方一个一个全部删掉不然就会编译错�?�q�时我们��可以在塔的上面加一个[Conditional("string")] 然后�E�序�q�行时就会忽略它

ps:[Conditional("string")]里面字符串随意取

如果惛_��ơ调用那个方法或属性怎么�?

�q�个很简�?你只需在引用命名空间那个地方进行一个宏定义把你在[Conditional("string")]里面的字�W�串定义出来��p��用了

C#-#define条�g�~�译

C#的预处理器指令从来不会�{化�ؓ可执行代码的命��o�Q�但是会影响�~�译�q�程的各个方面，常用的预处理器指令有#define�?undef�?if,#elif,#else�?endif�{�等�Q�下面介�l�C#中��?define�q�行条�g�~�译的实例�?/div>

C#中条件编译指令用于按条�g包含或排除源文�g中的某些部分。在Visual Studio中，会看到被排除的代码显�C�Zؓ灰色�?/div>

一�?define可以用来做什�?/div>

1、当计划发布两个版本的代码的时候。即基本版和拥有更多版本的企业版�Q�就可以用到条�g�~�译指��o�Q?/div>

2、例如同一个文件给silverlight、wpf、winform�{��用，�q�且�q�考虑Debug和Release�{�，有大部分代码是一��L��Q?/div>

3、指定函数和属性是否编译到最�l��品中厅R�?/div>

二�?define用法

语法�Q?define 名称

注意�Q�这里名�U�取Debug�Q�你也可以取其他名称如Dragon

1 #define Debug

说明�Q?/div>

1、Debug可以看做是声明的一个变量，但此变量没有真正的��|��存在�?if Debug�l�果为true�Q�否则�ؓfalse�Q?/div>

2�?define单独用没什么意义，一般是�?if或者Conditional�Ҏ��结合��用；

3�?define必须定义在所有using命名�I�间前面�Q?/div>

4、Debug与DEBUG是不同的�Q�C#区分大小�?/div>

天下 2019-06-26 18:03 发表评论

天下 — Tue, 12 Feb 2019 03:44:00 GMT

spring 官方下蝲地址�Q�Spring Framework 3.2.x&Spring Framework 4.0.x�Q?br />2017�q?2�?4�?15:53:59

SPRING官方�|�站改版后，��都是通过 Maven和Gradle下蝲�Q�对不��用Maven和Gradle开发项目的�Q�下载就非常�ȝ��Q�下�l�出Spring Framework jar官方直接下蝲路径:

http://repo.spring.io/libs-release-local/org/springframework/spring/

spring 4.0.x(Spring Framework 4.0.5)下蝲

http://repo.spring.io/libs-release-local/org/springframework/spring/4.0.5.RELEASE/spring-framework-4.0.5.RELEASE-dist.zip

spring 3.2.x�Q�Spring Framework 3.2.9�Q�下载：

http://repo.spring.io/libs-release-local/org/springframework/spring/3.2.9.RELEASE/spring-framework-3.2.9.RELEASE-dist.zip

spring 3.2.x�Q�Spring Framework 3.2.4�Q�下载：

http://repo.springsource.org/libs-release-local/org/springframework/spring/3.2.4.RELEASE/spring-framework-3.2.4.RELEASE-dist.zip

另spring security下蝲路径�Q?/p>

http://repo.spring.io/libs-release-local/org/springframework/security/spring-security/

http://repo.spring.io/libs-release-local/org/springframework/security/spring-security/3.2.4.RELEASE/spring-security-3.2.4.RELEASE-dist.zip

天下 2019-02-12 11:44 发表评论

spring源码分析�Q?�Q�AnnotationMethodHandlerAdapter

天下 — Wed, 11 Apr 2018 08:40:00 GMT

public class AnnotationMethodHandlerAdapter extends WebContentGenerator
        implements HandlerAdapter, Ordered, BeanFactoryAware {
    //

    public ModelAndView handle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        return invokeHandlerMethod(request, response, handler);
    }

    protected ModelAndView invokeHandlerMethod(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        ServletHandlerMethodResolver methodResolver = getMethodResolver(handler);
        Method handlerMethod = methodResolver.resolveHandlerMethod(request);
        ServletHandlerMethodInvoker methodInvoker = new ServletHandlerMethodInvoker(methodResolver);
        ServletWebRequest webRequest = new ServletWebRequest(request, response);
        ExtendedModelMap implicitModel = new BindingAwareModelMap();

        Object result = methodInvoker.invokeHandlerMethod(handlerMethod, handler, webRequest, implicitModel);
        ModelAndView mav =
                methodInvoker.getModelAndView(handlerMethod, handler.getClass(), result, implicitModel, webRequest);
        methodInvoker.updateModelAttributes(handler, (mav != null ? mav.getModel() : null), implicitModel, webRequest);
        return mav;
    }

    public ModelAndView getModelAndView(Method handlerMethod, Class handlerType, Object returnValue,
            ExtendedModelMap implicitModel, ServletWebRequest webRequest) throws Exception {}
}

其他

public final class Method extends Executable {
    public Object invoke(Object obj, Object args)
    throws IllegalAccessException, IllegalArgumentException,InvocationTargetException
    {
        if (!override) {
            if (!Reflection.quickCheckMemberAccess(clazz, modifiers)) {
                Class caller = Reflection.getCallerClass();
                checkAccess(caller, clazz, obj, modifiers);
            }
        }
        MethodAccessor ma = methodAccessor;             // read volatile
        if (ma == null) {
            ma = acquireMethodAccessor();
        }
        return ma.invoke(obj, args);
    }
}
public class ModelMap extends LinkedHashMap<String, Object> {}

public abstract class AbstractView extends WebApplicationObjectSupport implements View, BeanNameAware {
    /**
     * Prepares the view given the specified model, merging it with static
     * attributes and a RequestContext attribute, if necessary.
     * Delegates to renderMergedOutputModel for the actual rendering.
     * @see #renderMergedOutputModel
     */
    @Override
    public void render(Map<String, ?> model, HttpServletRequest request, HttpServletResponse response) throws Exception {
        if (logger.isTraceEnabled()) {
            logger.trace("Rendering view with name '" + this.beanName + "' with model " + model +
                " and static attributes " + this.staticAttributes);
        }

        Map<String, Object> mergedModel = createMergedOutputModel(model, request, response);
        prepareResponse(request, response);
        renderMergedOutputModel(mergedModel, getRequestToExpose(request), response);
    }
}

代码�Q?br />

天下 2018-04-11 16:40 发表评论