diff --git a/assets/img/posts/Lecture Notes/Modern Cryptography/mc-04-cbc-mac.png b/assets/img/posts/Lecture Notes/Modern Cryptography/mc-04-cbc-mac.png
new file mode 100644
index 0000000..9da4348
Binary files /dev/null and b/assets/img/posts/Lecture Notes/Modern Cryptography/mc-04-cbc-mac.png differ
diff --git a/assets/img/posts/Lecture Notes/Modern Cryptography/mc-04-ecbc-mac.png b/assets/img/posts/Lecture Notes/Modern Cryptography/mc-04-ecbc-mac.png
new file mode 100644
index 0000000..5cef43d
Binary files /dev/null and b/assets/img/posts/Lecture Notes/Modern Cryptography/mc-04-ecbc-mac.png differ
diff --git a/assets/img/posts/Lecture Notes/Modern Cryptography/mc-04-mac-security.png b/assets/img/posts/Lecture Notes/Modern Cryptography/mc-04-mac-security.png
new file mode 100644
index 0000000..c5d652c
Binary files /dev/null and b/assets/img/posts/Lecture Notes/Modern Cryptography/mc-04-mac-security.png differ
diff --git a/assets/img/posts/Lecture Notes/Modern Cryptography/mc-04-mac.png b/assets/img/posts/Lecture Notes/Modern Cryptography/mc-04-mac.png
new file mode 100644
index 0000000..cf13237
Binary files /dev/null and b/assets/img/posts/Lecture Notes/Modern Cryptography/mc-04-mac.png differ