diff --git a/content/notes/07-cryptography-applications.md b/content/notes/07-cryptography-applications.md
index 4cacc4929..301436cb6 100644
--- a/content/notes/07-cryptography-applications.md
+++ b/content/notes/07-cryptography-applications.md
@@ -4,6 +4,9 @@ aliases:
 tags: 
 - comp210
 - lecture
+sr-due: 2022-08-19
+sr-interval: 3
+sr-ease: 250
 ---
 
 
@@ -48,3 +51,17 @@ TCP model
 - "tree of trust"
 - based on public key crypto
 
+# GPG
+GNU privacy gurad (free libre open source) work alike for PGP
+
+![GPG example|400](https://i.imgur.com/9f2TJl2.png)
+
+# S/MIME
+cryptography for email
+
+secure multipupose internet mail expensions
+
+often not used, as it is not usually built in
+
+# Crypto
+
diff --git a/content/notes/comp-210.md b/content/notes/comp-210.md
index 893ef5475..e25598c0a 100644
--- a/content/notes/comp-210.md
+++ b/content/notes/comp-210.md
@@ -31,4 +31,4 @@ No final exam
 - [04-authentication-authorisation-passwords](notes/04-authentication-authorisation-passwords.md)
 - [05-cryptography](notes/05-cryptography.md)
 - [06-hashing-binary-public-key-cryptography](notes/06-hashing-binary-public-key-cryptography.md)
-- 
\ No newline at end of file
+- [07-cryptography-applications](notes/07-cryptography-applications.md)
\ No newline at end of file