Fix sign and encode buffer methods

package.json

 {
   "name": "@hiveio/metamask-snap",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "description": "Hive wallet extension allowing you to sign transactions using keys derived from your Metamask wallet",
   "main": "./dist/bundle.js",
   "files": [

snap.manifest.json

 {
-  "version": "1.2.0",
+  "version": "1.2.1",
   "description": "Hive wallet extension allowing you to sign transactions using keys derived from your Metamask wallet",
   "proposedName": "Hive Wallet",
   "repository": {
@@ -7,7 +7,7 @@
     "url": "git+https://gitlab.syncad.com/hive/metamask-snap.git"
   },
   "source": {
-    "shasum": "hAf7KSZu0ZiIU/ZhuggOpgN1Fw0TeiUw/bD2+lxjQN4=",
+    "shasum": "MXajRhEb2TjGR6uz1Q/BWyrqfzvNX0WPxcdKx+2ZlaQ=",
     "location": {
       "npm": {
         "filePath": "dist/bundle.js",

src/snap/dialogs/ConfirmBufferSign.tsx

@@ -15,12 +15,13 @@ export const ConfirmBufferSign = (origin: string, buffer: string, firstKey: KeyI
           Confirm if you want to sign it using your:
         </Text>
         <Text>
-          - <Bold>{firstKeykey.role}</Bold> key (account index: <Italic>#{ String(firstKey.accountIndex ?? 0) }</Italic>)
+          - <Bold>{firstKey.role}</Bold> key (account index: <Italic>#{ String(firstKey.accountIndex ?? 0) }</Italic>)
         </Text>
+        <Text>This message will be encrypted for: </Text>
         { secondKey ? (typeof secondKey === "string" ?
-          <Text>This message will be encrypted for: <Copyable value={secondKey}/></Text> :
-          <Text>This message will be encrypted for: <Bold>{secondKey.role}</Bold> key (account index: <Italic>#{ String(secondKey.accountIndex ?? 0) }</Italic>)</Text>
-        ) : <Text>This message can only be viewed by you</Text> }
+          <Copyable value={ secondKey }/> :
+          <Text>- <Bold>{secondKey.role}</Bold> key (account index: <Italic>#{ String(secondKey.accountIndex ?? 0) }</Italic>)</Text>
+        ) : <Text>- <Bold>yourself</Bold></Text> }
       </Box>
     )
   }