Use the CONIKS hasher

The moment of truth! - Where we finally switch back to using the CONIKS
hashing algorithm successfully :-)

Author: gdbelvin

cmd/keytransparency-client/grpcc/grpc_client.go

@@ -34,7 +34,7 @@ import (
 
 	"github.com/golang/protobuf/proto"
 	"github.com/google/trillian/client"
-	"github.com/google/trillian/merkle/maphasher"
+	"github.com/google/trillian/merkle/coniks"
 	"golang.org/x/net/context"
 	"google.golang.org/grpc"
 
@@ -98,7 +98,7 @@ func New(
 	return &Client{
 		cli:        client,
 		vrf:        vrf,
-		kt:         kt.New(vrf, maphasher.Default, verifier, log),
+		kt:         kt.New(vrf, coniks.Default, verifier, log),
 		log:        log,
 		mutator:    entry.New(),
 		RetryCount: 1,

integration/testutil.go

@@ -127,7 +127,7 @@ func NewEnv(t *testing.T) *Env {
 
 	// Configure map.
 	treeParams := stestonly.MapTree
-	treeParams.HashStrategy = trillian.HashStrategy_TEST_MAP_HASHER
+	treeParams.HashStrategy = trillian.HashStrategy_CONIKS_SHA512_256
 	tree, err := mapEnv.AdminClient.CreateTree(ctx, &trillian.CreateTreeRequest{
 		Tree: treeParams,
 	})

scripts/map_payload.json

@@ -2,7 +2,7 @@
   "tree":{
     "tree_state":"ACTIVE",
     "tree_type":"MAP",
-    "hash_strategy":"TEST_MAP_HASHER",
+    "hash_strategy":"CONIKS_SHA512_256",
     "signature_algorithm":"ECDSA",
     "max_root_duration":"0",
     "hash_algorithm":"SHA256"
@@ -12,4 +12,4 @@
       "curve":"P256"
     }
   }
-}
+}