From 6cb2790b08324c14ab60d99d5c320526f42f52bf Mon Sep 17 00:00:00 2001
From: Silas Davis <silas@erisindustries.com>
Date: Fri, 13 Jan 2017 12:21:51 +0000
Subject: [PATCH] Add documentation comment on lazily initialisation of account
public keys
---
manager/eris-mint/state/execution.go | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/manager/eris-mint/state/execution.go b/manager/eris-mint/state/execution.go
index ceefbbd8..9d9fd85b 100644
--- a/manager/eris-mint/state/execution.go
+++ b/manager/eris-mint/state/execution.go
@@ -203,6 +203,12 @@ func getOrMakeOutputs(state AccountGetter, accounts map[string]*acm.Account, out
return accounts, nil
}
+// Since all ethereum accounts implicitly exist we sometimes lazily create an Account object to represent them
+// only when needed. Sometimes we need to create an unknown Account knowing only its address (which is expected to
+// be a deterministic hash of its associated public key) and not its public key. When we eventually receive a
+// transaction acting on behalf of that account we will be given a public key that we can check matches the address.
+// If it does then we will associate the public key with the stub account already registered in the system once and
+// for all time.
func checkInputPubKey(acc *acm.Account, in *txs.TxInput) error {
if acc.PubKey == nil {
if in.PubKey == nil {
--
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