iOS，安全加密。采用RSA签名和AES随机秘钥加密，AES的随机秘钥采用RSA加密。密码0123456789abcdef
加密字段1加密结果：2yPBJGtAg/AfuvT8idAmzw==

   NSMutableDictionary *resultDic = [[NSMutableDictionary alloc]initWithCapacity:1];      //step1 对报文数据源排序a->z      NSMutableArray *sortedArray = [self sortDictionary:EncryptDic];      //step2 取出排序过后数组的value，拼成string      NSMutableArray *arrayOfValues = [NSMutableArray arrayWithArray:sortedArray];      NSString *paramValue = [arrayOfValues componentsJoinedByString:@""];      //step3 根据RAS私有密钥签名业务请求参数值字符串(paramValue),生成基于SHA1的RSA数字签名      CRSA *t = [CRSA shareInstance];      NSString *sign = [t encryptByRsa:paramValue withKeyType:KeyTypePrivate];      //step4 将签名放入原报文      NSMutableDictionary *dicWithSign = [NSMutableDictionary dictionaryWithDictionary:EncryptDic];      [dicWithSign setObject:sign forKey:@"sign"];      //step5 随机生成16位数字和字母组成的      NSString *merchantAesKey = [LcAESRSA set32bitString:16];      NSLog(@"\rAES key :%@",merchantAesKey);      //step6 用16位随机码加密含有签名的报文      SBJsonWriter * parser = [[SBJsonWriter alloc]init];      NSString * realdata = [parser stringWithObject:dicWithSign];      NSString *Stringdata = [NSData AES256EncryptWithPlainText:realdata key:merchantAesKey];      //step7 使用 RSA 加密 merchantAesKey 生成密钥密文:      NSString *Stringencryptkey = [t encryptByRsa:merchantAesKey withKeyType:KeyTypePublic];      [resultDic setObject:Stringdata forKey:@"data"];      [resultDic setObject:Stringencryptkey forKey:@"encryptKey"];

项目主页：http://www.open-open.com/lib/view/home/1441704774649