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revocation: fix nil pointer panic in shachain constructor

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This commit is contained in:
Olaoluwa Osuntokun 2015-12-21 15:41:23 -06:00
parent b9a6155021
commit d7fba0e89d
1 changed files with 4 additions and 2 deletions
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6
revocation/shachain.go
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@ -44,7 +44,7 @@ func NewHyperShaChain() *HyperShaChain {
// NewHyperShaChainFromSeed...
// * used to derive your own pre-images
func NewHyperShaChainFromSeed(seed *[32]byte, deriveTo uint64) (*HyperShaChain, error) {
var shaSeed *[32]byte
var shaSeed [32]byte
// If no seed is specified, generate a new one.
if seed == nil {
@ -52,13 +52,15 @@ func NewHyperShaChainFromSeed(seed *[32]byte, deriveTo uint64) (*HyperShaChain,
if err != nil {
return nil, err
}
} else {
shaSeed = *seed
}
// The last possible value in the chain is our starting index.
start := uint64(maxIndex)
stop := deriveTo
curHash := derive(start, stop, *shaSeed)
curHash := derive(start, stop, shaSeed)
// TODO(roasbeef): from/to or static size?
return &HyperShaChain{lastChainIndex: deriveTo, lastHash: curHash}, nil