diff --git a/FSCS630_Cryptography/labs/06_Public_key_Intro/Public_Key_Introduction.pptx b/FSCS630_Cryptography/labs/06_Public_key_Intro/Public_Key_Introduction.pptx
index e8ce81c..e5b1528 100644
Binary files a/FSCS630_Cryptography/labs/06_Public_key_Intro/Public_Key_Introduction.pptx and b/FSCS630_Cryptography/labs/06_Public_key_Intro/Public_Key_Introduction.pptx differ