# easy\_rsa 100 points

## 题意

Decrypt this cipher with RSA!

n = 1606938044411740147595993131987762585049124570740766496467497

e = 0x10001

cipher = 401533489858983095606309339787817217779019525090976475619112

## 解题步骤

n 很小，直接用 [3summer/CTF-RSA-tool](<https://github.com/3summer/CTF-RSA-tool>) 即可。

编写 [rsa.txt](<https://jia.je/ctf-writeups/2018-09-28-thuctf2018/crypto/rsa.txt>) ：

```
n = 1606938044411740147595993131987762585049124570740766496467497
e = 65537
c = 401533489858983095606309339787817217779019525090976475619112
```

然后进行破解：

```
$ python2 solve.py -i rsa.txt
INFO: THUCTF{n_is_too_small!!!}
```