#import <Foundation/Foundation.h>
#import "WXUtil.h"
/*
 加密实现MD5和SHA1
 */
@implementation WXUtil

//md5 encode
+(NSString *) md5:(NSString *)str
{
    const char *cStr = [str UTF8String];
    unsigned char digest[CC_MD5_DIGEST_LENGTH];
    CC_MD5( cStr, (unsigned int)strlen(cStr), digest );
    
    NSMutableString *output = [NSMutableString stringWithCapacity:CC_MD5_DIGEST_LENGTH * 2];
    
    for(int i = 0; i < CC_MD5_DIGEST_LENGTH; i++)
        [output appendFormat:@"%02X", digest[i]];
    
    return output;
}
//sha1 encode
+(NSString*) sha1:(NSString *)str
{
    const char *cstr = [str cStringUsingEncoding:NSUTF8StringEncoding];
    NSData *data = [NSData dataWithBytes:cstr length:str.length];
    
    uint8_t digest[CC_SHA1_DIGEST_LENGTH];
    
    CC_SHA1(data.bytes, (unsigned int)data.length, digest);
    
    NSMutableString* output = [NSMutableString stringWithCapacity:CC_SHA1_DIGEST_LENGTH * 2];
    
    for(int i = 0; i < CC_SHA1_DIGEST_LENGTH; i++)
        [output appendFormat:@"%02x", digest[i]];
    
    return output;
}
//http 请求
+(NSData *) httpSend:(NSString *)url method:(NSString *)method data:(NSString *)data
{
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:url] cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:5];
    //设置提交方式
    [request setHTTPMethod:method];
    //设置数据类型
    [request addValue:@"text/xml" forHTTPHeaderField:@"Content-Type"];
    //设置编码
    [request setValue:@"UTF-8" forHTTPHeaderField:@"charset"];
    //如果是POST
    [request setHTTPBody:[data dataUsingEncoding:NSUTF8StringEncoding]];
    
    NSError *error;
    //将请求的url数据放到NSData对象中
    NSData *response = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:&error];
    return response;
    //return [[NSString alloc] initWithData:response encoding:NSUTF8StringEncoding];
}

@end