Update cheatsheets

tldr/cisco-ios/crypto

@@ -0,0 +1,14 @@
+---
+syntax: markdown
+tags: [tldr, cisco-ios]
+source: https://github.com/tldr-pages/tldr.git
+---
+# crypto
+
+> Manage cryptography.
+> Accessed in configuration mode.
+> More information: <https://www.cisco.com/c/en/us/td/docs/security/asa/asa-cli-reference/A-H/asa-command-ref-A-H/crypto-is-cz-commands.html>.
+
+- Generate an `rsa` key:
+
+`crypto key generate rsa`