fixed missing variable for key type

crypto/ssh/key-generation.sh

@@ -8,6 +8,6 @@ keyType="ed25519"
 keyDate=`date +%F` # format yyyy-mm-dd
 keyPass=`openssl rand -base64 21` # multiple of 3 characters to avoid padding
 keyName="id_"$keyType"_"$keyUser"_"$keyFQDN"_"$keyDate
-ssh-keygen -t ed25519 -C $keyName -N $keyPass -f ./$keyName
+ssh-keygen -t $keyType -C $keyName -N $keyPass -f ./$keyName
 ls $keyName*
 echo $keyPass && unset keyPass