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Merge pull request #258 from mtrmac/unused-sha256 

Don't compute an unnecessary cryptographic hash
This commit is contained in:
David Lawrence 2015-11-02 11:12:39 -08:00
parent dfaa8daf9b 29ae808472
commit ab6637934d
1 changed files with 5 additions and 3 deletions
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4
tuf/client/client.go
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@ -405,10 +405,12 @@ func (c *Client) downloadSigned(role string, size int64, expectedSha256 []byte)
if err != nil { if err != nil {
return nil, nil, err return nil, nil, err
} }
if expectedSha256 != nil {
genHash := sha256.Sum256(raw) genHash := sha256.Sum256(raw)
if expectedSha256 != nil && !bytes.Equal(genHash[:], expectedSha256) { if !bytes.Equal(genHash[:], expectedSha256) {
return nil, nil, ErrChecksumMismatch{role: role} return nil, nil, ErrChecksumMismatch{role: role}
} }
}
s := &data.Signed{} s := &data.Signed{}
err = json.Unmarshal(raw, s) err = json.Unmarshal(raw, s)
if err != nil { if err != nil {