init

aes-encrypt-decrypt/how-to-use.md

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+
+## generate key via genkey
+```sh
+./genkey.sh miko089
+```
+you can change `miko089` to any nickname as you want
+
+## encrypt
+take public key of another people and 
+```sh
+./encrypt.sh <key_path> <msg_path>
+```
+
+## decrypt
+take your private key and
+```sh
+./decrypt.sh <key_path> <msg_encoded>
+```
+