validate public key is not empty prior to parsing it

shesek · Nov 29, 2013 · 2cae304 · 2cae304
1 parent 84e1699
commit 2cae304
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/lib/bitcoin/key.coffee b/lib/bitcoin/key.coffee
@@ -56,6 +56,7 @@ Key.random = (compressed=true) ->
 
 # Returns a new Key instance from public key hex string or byte array
 Key.from_pubkey = (pub) ->
+  throw new Error 'Empty public key' unless pub?.length
   pub = hexToBytes pub if typeof pub is 'string'
   throw new Error 'Invalid public key length' unless pub.length in [ PUBKEY_LEN, PUBKEY_C_LEN ]
   new Key 'pub', pub