[WeChall] Training: Encodings I (Training, Encoding)
Training: Encodings I (Training, Encoding)
We intercepted this message from one challenger to another, maybe you can find out what they were talking about.
To help you on your progress I coded a small java application, called JPK.
Note: The message is most likely in english.
10101001101000110100111100110100
00011101001100101111100011101000
10000011010011110011010000001101
11010110111000101101001111010001
00000110010111011101100011110111
11100100110010111001000100000110
00011110011110001111010011101001
01011100100000101100111011111110
10111100100100000111000011000011
11001111100111110111110111111100
10110010001000001101001111001101
00000110010111000011110011111100
11110011111010011000011110010111
0100110010111100100101110
解題：
1.看到0和1，猜測是二進位制askII 轉換。
ASCII 碼使用指定的7 位或8 位二進位制數組合來表示128 或256 種可能的字元。
標準ASCII 碼也叫基礎ASCII碼，使用7 位二進位制數（剩下的1位二進位制為0）來表示所有的大寫和小寫字母，數字0 到9、標點符號， 以及在美式英語中使用的特殊控制字元。
2.用給定的JPK進行Binary Format 轉換，預設bitsperblock 是8，轉換後發現多出1位不能整分，換用7，進行整分。
3.用給定的JPK進行Binary to ASCII轉換即可。
This text is 7-bit encoded ascii. Your password is easystarter.
