diff --git a/FSCS630_Cryptography/labs/04_DES/DES.pptx b/FSCS630_Cryptography/labs/04_DES/DES.pptx index c966ced..89e3a76 100644 Binary files a/FSCS630_Cryptography/labs/04_DES/DES.pptx and b/FSCS630_Cryptography/labs/04_DES/DES.pptx differ