From 7dfa743dce780659bd2e71130d91d51e93b1f68e Mon Sep 17 00:00:00 2001
From: Rasmus Dahlberg <rasmus.dahlberg@kau.se>
Date: Fri, 29 Jan 2021 17:29:34 +0100
Subject: replaced x509 with namespace on the client-side

---
 client/verify.go | 59 --------------------------------------------------------
 1 file changed, 59 deletions(-)

(limited to 'client/verify.go')

diff --git a/client/verify.go b/client/verify.go
index d9c18bf..3ce02e7 100644
--- a/client/verify.go
+++ b/client/verify.go
@@ -1,58 +1,11 @@
 package client
 
 import (
-	"fmt"
-
-	"crypto"
-	"crypto/ed25519"
-	"crypto/tls"
-
 	"github.com/google/trillian/merkle"
 	"github.com/google/trillian/merkle/rfc6962"
 	"github.com/system-transparency/stfe"
 )
 
-// VerifySignedDebugInfoV1 verifies an SDI signature
-func VerifySignedDebugInfoV1(sdi *stfe.StItem, scheme tls.SignatureScheme, key crypto.PublicKey, message []byte) error {
-	if err := supportedScheme(scheme, key); err != nil {
-		return err
-	}
-	if !ed25519.Verify(key.(ed25519.PublicKey), message, sdi.SignedDebugInfoV1.Signature) {
-		return fmt.Errorf("bad signature")
-	}
-	return nil
-}
-
-// VerifySignedTreeHeadV1 verifies an STH signature
-func VerifySignedTreeHeadV1(sth *stfe.StItem, scheme tls.SignatureScheme, key crypto.PublicKey) error {
-	serialized, err := sth.SignedTreeHeadV1.TreeHead.Marshal()
-	if err != nil {
-		return fmt.Errorf("failed marshaling tree head: %v", err)
-	}
-	if err := supportedScheme(scheme, key); err != nil {
-		return err
-	}
-	if !ed25519.Verify(key.(ed25519.PublicKey), serialized, sth.SignedTreeHeadV1.Signature) {
-		return fmt.Errorf("bad signature")
-	}
-	return nil
-}
-
-// VerifyChecksumV1 verifies a checksum signature
-func VerifyChecksumV1(checksum *stfe.StItem, key crypto.PublicKey, signature []byte, scheme tls.SignatureScheme) error {
-	serialized, err := checksum.Marshal()
-	if err != nil {
-		return fmt.Errorf("failed marshaling StItem: %v", err)
-	}
-	if err := supportedScheme(scheme, key); err != nil {
-		return err
-	}
-	if !ed25519.Verify(key.(ed25519.PublicKey), serialized, signature) {
-		return fmt.Errorf("bad signature")
-	}
-	return nil
-}
-
 // VerifyConsistencyProofV1 verifies that a consistency proof is valid without
 // checking any sth signature
 func VerifyConsistencyProofV1(proof, first, second *stfe.StItem) error {
@@ -84,15 +37,3 @@ func VerifyInclusionProofV1(proof *stfe.StItem, rootHash, leafHash []byte) error
 		leafHash,
 	)
 }
-
-// supportedScheme checks whether the client library supports the log's
-// signature scheme and public key type
-func supportedScheme(scheme tls.SignatureScheme, key crypto.PublicKey) error {
-	if _, ok := key.(ed25519.PublicKey); ok && scheme == tls.Ed25519 {
-		return nil
-	}
-	switch t := key.(type) {
-	default:
-		return fmt.Errorf("unsupported scheme(%v) and key(%v)", scheme, t)
-	}
-}
-- 
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