use xhex everywhere.

khatru/blossom/handlers.go

@@ -2,7 +2,6 @@ package blossom
 
 import (
 	"crypto/sha256"
-	"encoding/hex"
 	"encoding/json"
 	"io"
 	"mime"
@@ -128,7 +127,7 @@ func (bs BlossomServer) handleUpload(w http.ResponseWriter, r *http.Request) {
 	}
 
 	hash := sha256.Sum256(b)
-	hhash := hex.EncodeToString(hash[:])
+	hhash := nostr.HexEncodeToString(hash[:])
 	mimeType := mime.TypeByExtension(ext)
 	if mimeType == "" {
 		mimeType = "application/octet-stream"
@@ -443,7 +442,7 @@ func (bs BlossomServer) handleMirror(w http.ResponseWriter, r *http.Request) {
 
 	// calculate sha256
 	hash := sha256.Sum256(body)
-	hhash := hex.EncodeToString(hash[:])
+	hhash := nostr.HexEncodeToString(hash[:])
 
 	// verify hash against x tag
 	if auth.Tags.FindWithValue("x", hhash) == nil {

khatru/handlers.go

@@ -3,7 +3,6 @@ package khatru
 import (
 	"context"
 	"crypto/rand"
-	"encoding/hex"
 	"errors"
 	"net/http"
 	"slices"
@@ -76,7 +75,7 @@ func (rl *Relay) HandleWebsocket(w http.ResponseWriter, r *http.Request) {
 	ws := &WebSocket{
 		conn:               conn,
 		Request:            r,
-		Challenge:          rl.ChallengePrefix + hex.EncodeToString(challenge),
+		Challenge:          rl.ChallengePrefix + nostr.HexEncodeToString(challenge),
 		AuthedPublicKeys:   make([]nostr.PubKey, 0),
 		negentropySessions: xsync.NewMapOf[string, *NegentropySession](),
 	}

khatru/nip86.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"crypto/sha256"
 	"encoding/base64"
-	"encoding/hex"
 	"encoding/json"
 	"fmt"
 	"io"
@@ -99,7 +98,7 @@ func (rl *Relay) HandleNIP86(w http.ResponseWriter, r *http.Request) {
 			goto respond
 		}
 
-		if pht := evt.Tags.FindWithValue("payload", hex.EncodeToString(payloadHash[:])); pht == nil {
+		if pht := evt.Tags.FindWithValue("payload", nostr.HexEncodeToString(payloadHash[:])); pht == nil {
 			resp.Error = "invalid auth event payload hash"
 			goto respond
 		}