文件名称:huibian.tar
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.文件加密程序
要求:A、文件名从键盘输入。
B、加密密钥从键盘输入。
思路:从原文件读取内容至缓冲区,对其加密后,重新写回文件原来的地方。
提示要点:A、加密可使用“异或”操作。
B、相关中断为3DH,3EH,3FH,40H,42H号系统功能调用(INT 21H)。
-. File encryption program requirements: A, file names from the keyboard. B, the encryption key from the keyboard. Idea: read the content from the original file into the buffer, encrypt, re-write the file back to its original place. Tip points: A, encryption can use the " exclusive or" operation. B, related interrupting 3DH, 3EH, 3FH, 40H, 42H number system function call (INT 21H).
要求:A、文件名从键盘输入。
B、加密密钥从键盘输入。
思路:从原文件读取内容至缓冲区,对其加密后,重新写回文件原来的地方。
提示要点:A、加密可使用“异或”操作。
B、相关中断为3DH,3EH,3FH,40H,42H号系统功能调用(INT 21H)。
-. File encryption program requirements: A, file names from the keyboard. B, the encryption key from the keyboard. Idea: read the content from the original file into the buffer, encrypt, re-write the file back to its original place. Tip points: A, encryption can use the " exclusive or" operation. B, related interrupting 3DH, 3EH, 3FH, 40H, 42H number system function call (INT 21H).
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huibian.tar