From cb6485bb6075179dc2521b8e82db961deae74faf Mon Sep 17 00:00:00 2001 From: Rasmus Dahlberg Date: Sat, 21 May 2022 20:31:09 +0200 Subject: add proof verification to sigsum-debug --- cmd/sigsum-debug/head/consistency/consistency.go | 30 ++++++++++++++++++++++-- 1 file changed, 28 insertions(+), 2 deletions(-) (limited to 'cmd/sigsum-debug/head/consistency') diff --git a/cmd/sigsum-debug/head/consistency/consistency.go b/cmd/sigsum-debug/head/consistency/consistency.go index 18fbdd6..c4feb94 100644 --- a/cmd/sigsum-debug/head/consistency/consistency.go +++ b/cmd/sigsum-debug/head/consistency/consistency.go @@ -1,9 +1,35 @@ package consistency import ( + "bytes" "fmt" + + "git.sigsum.org/sigsum-go/internal/fmtio" + "git.sigsum.org/sigsum-go/pkg/types" ) -func Main(args []string, oldSize, newSize uint64, oldRoot, newRoot string) error { - return fmt.Errorf("TODO") +func Main(args []string, optOldSize, optNewSize uint64, optOldRoot, optNewRoot string) error { + if len(args) != 0 { + return fmt.Errorf("trailing arguments: %v", args) + } + b, err := fmtio.BytesFromStdin() + if err != nil { + return fmt.Errorf("read: %w", err) + } + var proof types.ConsistencyProof + if err := proof.FromASCII(bytes.NewBuffer(b), optOldSize, optNewSize); err != nil { + return fmt.Errorf("parse proof: %w", err) + } + oldRoot, err := fmtio.HashFromHex(optOldRoot) + if err != nil { + return fmt.Errorf("parse old root: %w", err) + } + newRoot, err := fmtio.HashFromHex(optNewRoot) + if err != nil { + return fmt.Errorf("parse new root: %w", err) + } + if err := proof.Verify(&oldRoot, &newRoot); err != nil { + return fmt.Errorf("verify: %w", err) + } + return nil } -- cgit v1.2.3