How to embed hidden messages in picture files (OS X) ¼û°ÜÁø ¸Þ½ÃÁö¿¡ »çÁø ÆÄÀÏÀ» Æ÷ÇÔÇÏ´Â ¹æ¹ý (¿î¿µ üÁ¦ x)

by Ross McKillop on August 12, 2008 ·Î½º mckillop¿¡ ÀÇÇØ 2008³â 8¿ù 12ÀÏ

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Yes, just like in the movie ¿¹,ÀÌ ¿µÈ­Ã³·³ Along Came a Spider ½ºÆÄÀÌ´õ , you too can hide messages inside of jpg, gif, png and other picture files. , ´ç½Åµµ ¸Þ½ÃÁö¸¦ ³»ºÎ¸¦ ¼û±æ ¼öÀÖ½À´Ï´ÙÀÎÁö, png ¹× ±âŸ »çÁø ÆÄÀÏÀ»ÇÕ´Ï´Ù.

  1. First up, download and install ù¹øÂ°·Î, ´Ù¿î·Îµå ¹× ¼³Ä¡ iSteg isteg . ÇÕ´Ï´Ù. The installation is a breeze - just unzip the file, open the .dmg and drag iSteg to your Applications folder. ¼³Ä¡°¡ °£´Ü - ±×³É ¾ÐÃà ÇØÁ¦ ÆÄÀÏÀ» ¿©½Ê½Ã¿À. dmg istegÇÏ¿© ÀÀ¿ë ÇÁ·Î±×·¥ Æú´õ¸¦ µå·¡±×ÇÕ´Ï´Ù. Launch it from there. °Å±â¼­ºÎÅÍ ½ÃÀÛÇÕ´Ï´Ù.
  2. Enter a password in the Password: field. ºñ¹Ð ¹øÈ£¸¦ ÀÔ·ÂÇÏ°í ºñ¹Ð ¹øÈ£ : ÇʵåÇÕ´Ï´Ù. This is the password that the person receiving your encrypted picture will need to know in order to extract the hidden message. À̰ÍÀº ±ÍÇÏÀÇ ¾ÏȣȭµÈ ºñ¹Ð ¹øÈ£¸¦ ¼ö½ÅÇÏ´Â »ç¶÷À» À§ÇØ ¾Ë¾Æ¾ß ÇÒ »çÁøÀÌ ¼û°ÜÁø ¸Þ½ÃÁö¸¦ ¾ÐÃàÀ» DZ´Ï´Ù.

  3. click to enlarge Ŭ¸¯Çϸé È®´ë

  4. Click the plus (+) button next to the Source Picture File field, and navigate to the picture you want to hide a message in. Select it and click the Choose button. Ŭ¸¯ÇÏ¿© Ç÷¯½º (+) ¹öư ¿·¿¡ÀÖ´Â ¿øº» ±×¸² ÆÄÀÏÀ» ÀÔ·ÂÇÑ ÈÄ ¿øÇÏ´Â »çÁøÀ» À̵¿ÇÏ´Â ¸Þ½ÃÁö¸¦ ¼û±æ ÀÎÄ¡ ¼±ÅÃÇÏ°í ¼±Åà ¹öưÀ» Ŭ¸¯ÇϽʽÿÀ.
  5. Open your favorite text editor and write out the message you want to send/embed in the picture. ¿©·¯ºÐÀÌ ÁÁ¾ÆÇÏ´Â ÅØ½ºÆ® ÆíÁý±â¸¦ ¿­¾î º¸·Á´Â ¸Þ½ÃÁö·Î ÀÛ¼º º¸³»±â / ¼Ò½ºÀÇ »çÁøÇÕ´Ï´Ù. Save the file. ÆÄÀÏÀ» ÀúÀåÇÕ´Ï´Ù.
  6. Back in iSteg, click the plus (+) button next to the Source Text File field. ´Ù½Ã isteg¸¦ Ŭ¸¯ÇϽʽÿÀ Ç÷¯½º (+) ¹öư ¿·¿¡ÀÖ´Â ¼Ò½º ÅØ½ºÆ® ÆÄÀÏÀ» ÇʵåÇÕ´Ï´Ù. Navigate to the text file you just created and saved, select it, and click the Choose button. ·Î À̵¿ÇÏ¿© ÅØ½ºÆ® ÆÄÀÏÀ» ¹æ±Ý ¸¸µç ¹× ÀúÀåÀ» ¼±ÅÃÇÏ°í ¼±Åà ¹öưÀ» Ŭ¸¯ÇϽʽÿÀ.

  7. click to enlarge Ŭ¸¯Çϸé È®´ë

  8. Click the Process button. ÀÌ °úÁ¤ ¹öưÀ» Ŭ¸¯ÇϽʽÿÀ. Give a name to the output file and select a location to save it. ¿¡ À̸§À» ÁöÁ¤ ÇÒ À§Ä¡¸¦ ÀúÀåÇϰí Ãâ·Â ÆÄÀÏÀ» ¼±ÅÃÇÕ´Ï´Ù. Click Save . ÀúÀåÀ» Ŭ¸¯ÇÕ´Ï´Ù.
  9. iSteg will do its thing, and you¡¯ll be presented with a summary window. ±× isteg ÇÒ °Í, ¹× ´ç½ÅÀÌ µÉ ¿ä¾à âÀǸ¦ ¼ö¿©ÇÕ´Ï´Ù. Click the Close button. ´Ý±â ¹öưÀ» Ŭ¸¯ÇϽʽÿÀ.

  10. click to enlarge Ŭ¸¯Çϸé È®´ë

  11. Now send your picture (the output one) to whomever you wanted to share your secret message with. Áö±Ý º¸³»½Ê½Ã¿À ±×¸² (ÀÇ Ãâ·Â 1)À» ´ç½ÅµéÀÌ ¿øÇÏ´Â »ç¶÷ ´©±¸¿¡°Ô³ª ¸Þ½ÃÁö°¡ ´ç½ÅÀÇ ºñ¹ÐÀ» °øÀ¯ÇÕ´Ï´Ù. They too will need to use iSteg to retrieve the hidden message (or outguess 2.0, or another app that is a front-end for outguess 2.0). ±×µéÀº ³Ê¹« isteg¸¦ »ç¿ëÇÒ ÇÊ¿ä´Â ¼û°ÜÁø ¸Þ½ÃÁö¸¦ °Ë»öÇÕ´Ï´Ù (¶Ç´Â ¾ÐµµÇÏ´Â 2.0, ¶Ç´Â ´Ù¸¥ ÀÀ¿ë ÇÁ·Î±×·¥Àº ÇÁ·±Æ® - ¿£µå¸¦ ¾ÐµµÇÏ´Â 2.0).
  12. When they have the file, they¡¯ll need to enter the same password in the Password: field, and select that file using the Source Picture File button. ±×µéÀÌ ÆÄÀÏÀ» ¶§, ±×µéÀÌ ÇÊ¿ä µ¿ÀÏÇÑ ºñ¹Ð ¹øÈ£¸¦ ÀÔ·ÂÇÏ°í ºñ¹Ð ¹øÈ£ : ÀÔ·ÂÇÑ ÈÄ ¹öưÀ» ±×¸² ÆÄÀÏÀÇ ¼Ò½º¸¦ »ç¿ëÇÏ¿© ÇØ´ç ÆÄÀÏÀ» ¼±ÅÃÇÕ´Ï´Ù. But this time, they¡¯ll have to remove the check mark from the Encode: field. ÇÏÁö¸¸ÀÌ ½Ã°£, ±×µéÀÌ ¿ì¸®¿¡°Ô ÀÎÄÚµù¿¡¼­ üũ Ç¥½Ã¸¦ Á¦°ÅÇÕ´Ï´Ù : ÇʵåÇÕ´Ï´Ù.

  13. click to enlarge Ŭ¸¯Çϸé È®´ë

  14. Then click Process to decrypt the file. ´ÙÀ½ ÆÄÀÏÀ» ÇØµ¶ÇÏ´Â °úÁ¤À» Ŭ¸¯ÇϽʽÿÀ. If the password is correct, they¡¯ll be asked to give the output file a name, and a location to save it. ºñ¹Ð ¹øÈ£°¡ Á¤È®Çϸé, ±×µéÀÇ È®°íÇÑ Á¦°øÇ϶ó´Â ¸Þ½ÃÁö°¡ Ãâ·Â ÆÄÀÏÀÇ À̸§°ú À§Ä¡¸¦ ÀúÀåÇÕ´Ï´Ù.
  15. iSteg will once again do its thing, and this time a summary window of the decoding process will be displayed. ´Ù½Ã ÇÑ ¹øÇÏÁö isteg°¡ ±× °Í, ±×¸®°í À©µµ¿ìÀÇ µðÄÚµù °úÁ¤ÀÌ ½Ã°£¿¡ ´ëÇÑ ¿ä¾àÀÌ Ç¥½ÃµË´Ï´Ù.

  16. click to enlarge Ŭ¸¯Çϸé È®´ë

  17. When they open the file that iSteg created, it will contain your secret hidden message. isteg »ý¼ºÇÏ´Â ÆÄÀÏÀ» ¿­ ¶§, ´ç½ÅÀÇ ºñ¹ÐÀÌ ¼û°ÜÁø ¸Þ½ÃÁö¸¦ Æ÷ÇÔÇÕ´Ï´Ù.
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