Message: allow base64 strings as input

src/message.js

@@ -35,14 +35,19 @@ function sign(privKey, message, network) {
 }
 
 // TODO: network could be implied from address
-function verify(address, signatureBuffer, message, network) {
+function verify(address, signature, message, network) {
+  if (!Buffer.isBuffer(signature)) {
+    signature = new Buffer(signature, 'base64')
+  }
+
   if (address instanceof Address) {
     address = address.toString()
   }
+
   network = network || networks.bitcoin
 
   var hash = magicHash(message, network)
-  var parsed = ECSignature.parseCompact(signatureBuffer)
+  var parsed = ECSignature.parseCompact(signature)
   var e = BigInteger.fromBuffer(hash)
   var Q = ecdsa.recoverPubKey(ecparams, e, parsed.signature, parsed.i)