Su Yuxi and Cheng Xiaoyu came down from the third floor, she first served a cup of coffee for Cheng Xiaoyu, and then when she returned to the room, she pretended to say casually: "Brother, give me your mobile phone for a while, my mobile phone is lost in Xu Qinning's bag, I will study the WeChat payment system that Chu Hang and them made at night." Pen "Fun" Pavilion www.biquge.info"

Cheng Xiaoyu naturally didn't suspect her sister, and handed the mobile phone in her shorts pocket to Su Yuxi, Su Yuxi took Cheng Xiaoyu's mobile phone and said, "Wait a minute, bring it to you." ”

Cheng Xiaoyu let out a casual "um", where did he know that his little action had already been guessed by Su Yuxi.

Su Yuxi took Cheng Xiaoyu's mobile phone back to the room, first took out the SIM card and inserted it into the card reader that had been prepared for a long time, and then connected the card reader and Cheng Xiaoyu's mobile phone to the computer, she wanted to crack Cheng Xiaoyu's SIM card, and then make a copy, but she first installed a hidden monitoring software in Cheng Xiaoyu's mobile phone.

What do you do by copying the card and installing the monitoring software? Many people who don't know how to do it think that as long as they copy the SIM card, they can achieve monitoring, but this is actually wrong, because the two cards cannot talk at the same time. Even if someone successfully copies your SIM card, the duplicate card is no different from the original card, can be authenticated, and can be connected to the operator's network. But when two cards are used at the same time, the problem arises. After the SIM card is connected to the operator's network, all communication is encrypted with a KC key, which is randomly generated during the authentication process.

Therefore, although the two cards are the same, the KC obtained must be different because the authentication is carried out separately. When a mobile phone uses one of the cards to communicate, if it finds that the current KC key is invalid, it will be forced to re-authenticate to obtain a new KC, so that the previous KC will be invalid.

The communication of the other card will be interrupted due to the failure of the key, and in order to regain the right to communicate with the mobile network, it must be forced to re-authenticate by turning it back on, making a call, or sending a text message.

In short, only one mobile phone can maintain communication at a time, and the user sees the appearance: two mobile phones can make calls and send text messages separately but not at the same time, when a call comes, only the most recent mobile phone that has spoken or sent a text message can ring to answer, and the other mobile phone can not be answered without ringing. In this case, some of the calls and texts you receive may be intercepted by another phone, but you can't have them eavesdropped on the other phone when you are on the call.

The reason why Su Yuxi copied Cheng Xiaoyu's card was to quietly get the knife back, and it was not difficult to get it back, but what Su Yuxi wanted to do was to be unaware.

The system installed by Su Yuxi called "Monitor King" was also bought by Su Yuxi through Liu Yongqing, and it can monitor and record all the call content of the entered mobile phone number without any additional recording equipment, with a total recording time of more than 20 hours.

She also invested 2 million in Liu Yongqing and asked him to set up a studio, ostensibly to secretly photograph the privacy of celebrities, but in fact, it was used by Su Yuxi to expand his manpower for his own ears.

Su Yuxi finished installing the software, this software can be connected to the baseband that is actually still active even when it is turned off, so that the location of the mobile phone can be locked.

Then she began to brute-force the SIM card, this is a technical job, the authentication key ki is restricted access data in the SIM card, and the phone can't read the ki. Data encryption with KI is all done inside the SIM card. The SIM card can only be copied if the KI is cracked using brute force calculus, plus the IMSI and the SIM card serial number.

Although it is very troublesome to crack, there is still a possibility of cracking, Su Yuxi has long studied the SIM card, and the process of making a card can be used to burn a parameter value into the SIM card with a special process, consisting of 32 hexadecimal characters, such as d17f20239eedbe1520f64a851f3c44**.

The principle of SIM card scanning is to use the collision vulnerability of the P128 algorithm to calculate the KI. ki is composed of ki0~ki7, 8 subkis, each subki is a double byte, and all combinations of subkis are 256x256=65536. Based on 14,000 per hour, 65,536/14,000 = 4 hours and 40 minutes can run a ki pair.

Su Yuxi finished cracking, it was already more than twelve o'clock, she put the chip back on her mobile phone, walked out of her bedroom, looked at Cheng Xiaoyu's room with the lights on, and took the mobile phone to return it to Cheng Xiaoyu.

Today's night is extraordinarily beautiful, the moon is like inlaid on the blue flannel canopy, the pearls of brilliance, when Su Yuxi came in, the bright light sprinkled softly on Cheng Xiaoyu's bed, Cheng Xiaoyu sat on the bed, half of her body was bathed in silver light, like a character who came out of a comic, Su Yuxi had no concept of the word beauty, but this picture made her feel very comfortable, she said to Cheng Xiaoyu: "Well! It's done. After returning the phone to Cheng Xiaoyu, he asked, "Oh, by the way, how is your relationship with that Lei Xin?" ”

Cheng Xiaoyu was sitting on the bed typing a movie script on his laptop, and when he saw Su Yuxi suddenly ask about Lei Xin, he thought about it, frowned and said, "And him?" There shouldn't be much intersection, right? It seems that he likes Senior Sister Pei. ”

Su Yuxi sat on the edge of the bed, Cheng Xiaoyu's bed was very large, she turned around and sat side by side with Cheng Xiaoyu, crossed her feet, and Cheng Xiaoyu's eyes unconsciously fell on the pair of snow-white and crystalline slender feet. As soft as the eye can see, the ten toes are pink and neatly arranged without the slightest gap. The nails are slightly reddish like tiny flowers covering the white jade, and the flesh color of the instep is almost transparent, and the thin blood vessels are clearly visible.

All the curves and colors on Su Yuxi's body are perfect and flawless.

Cheng Xiaoyu's heart shrank tightly. He immediately turned his gaze to the computer, lamenting in his heart that the laws of nature were terrible, that he had no desires in his heart, only that he was afraid that he would have ideas. Because the more he loves, the more restrained he becomes.

Su Yuxi saw Cheng Xiaoyu's eyes tremble, like a snow-covered tree pressed in the cold winter, shaking off countless white and flawless hearts, his eyes were still so clear, with a serious expression like abstinence/lust written on his face, the tip of her heart seemed to be blown by the breeze, like a plucked piano plucked with the plucked strings of the plucked strings, driving the subtle air vibration.

Su Yuxi didn't know that this heartbeat was an instinctive reaction of the body, just like a baby naturally knew who his mother was, she paused and said: "He was making a movie recently and pulled Pei Yanchen as the starring role, but his actual purpose is to invite you to join through Pei Yanchen, but he is one of the most likely people to frame you, so you can't agree." ”

Cheng Xiaoyu was entangled for a long time and said to Su Yuxi: "Then he won't do anything to Senior Sister Pei, right?" ”

The pleasure in Su Yuxi's heart was immediately annihilated, and she glanced at Cheng Xiaoyu and said expressionlessly: "I think she is quite compatible with that Lei Xin, a liar and a playboy." ”

Cheng Xiaoyu paused and said cautiously: "Xiaoxi, you have a misunderstanding about Senior Sister Pei, she is not that kind of person. ”

"You seem to know her very well. Knowing that Lei Xin is not a good person, why did he agree to make a movie? ”

Cheng Xiaoyu whispered: "Her economic conditions are not very good. He didn't know that the more he defended Pei Yanchen, the more disgusted Su Yuxi's heart became.

Su Yuxi said coldly: "Not to mention how much money you lost to her, you gave her such a big reputation, it's not easy for her to make money?" ”

Cheng Xiaoyu was still thinking about how to defend Pei Yanchen, so Su Yuxi said coldly: "I'm sleepy, go back to sleep." ”

Cheng Xiaoyu opened his mouth and wanted to say something, but he was never able to say it.

If you want to be an unreasonable girl, you will definitely ask: "Who do you choose between me and her?" ”

But Su Yuxi won't ask Cheng Xiaoyu who she and Pei Yanchen want to choose, as long as Cheng Xiaoyu has only one answer to choose from.

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