diff --git a/FSCS630_Cryptography/labs/Public_key_Intro/Public_Key_Introduction.pptx b/FSCS630_Cryptography/labs/Public_key_Intro/Public_Key_Introduction.pptx
index b582706..16778fd 100644
Binary files a/FSCS630_Cryptography/labs/Public_key_Intro/Public_Key_Introduction.pptx and b/FSCS630_Cryptography/labs/Public_key_Intro/Public_Key_Introduction.pptx differ