get rid of all the deprecated things.

helpers.go

@@ -103,3 +103,13 @@ func subIdToSerial(subId string) int64 {
 	serialId, _ := strconv.ParseInt(subId[0:n], 10, 64)
 	return serialId
 }
+
+func isLowerHex(thing string) bool {
+	for _, charNumber := range thing {
+		if (charNumber >= 48 && charNumber <= 57) || (charNumber >= 97 && charNumber <= 102) {
+			continue
+		}
+		return false
+	}
+	return true
+}

keys.go

@@ -6,7 +6,6 @@ import (
 	"fmt"
 	"io"
 	"math/big"
-	"strings"
 
 	"github.com/btcsuite/btcd/btcec/v2"
 	"github.com/btcsuite/btcd/btcec/v2/schnorr"
@@ -39,16 +38,11 @@ func GetPublicKey(sk string) (string, error) {
 	return hex.EncodeToString(schnorr.SerializePubKey(pk)), nil
 }
 
-// Deprecated: use IsValid32ByteHex instead -- functionality unchanged.
-func IsValidPublicKeyHex(pk string) bool {
-	if strings.ToLower(pk) != pk {
+func IsValidPublicKey(pk string) bool {
+	if !isLowerHex(pk) {
 		return false
 	}
-	dec, _ := hex.DecodeString(pk)
-	return len(dec) == 32
-}
 
-func IsValidPublicKey(pk string) bool {
 	v, _ := hex.DecodeString(pk)
 	_, err := schnorr.ParsePubKey(v)
 	return err == nil

nip13/deprecated.go

@@ -1,32 +0,0 @@
-package nip13
-
-import (
-	"strconv"
-	"time"
-
-	"github.com/nbd-wtf/go-nostr"
-)
-
-// Deprecated: use DoWork() instead.
-func Generate(event *nostr.Event, targetDifficulty int, timeout time.Duration) (*nostr.Event, error) {
-	if event.PubKey == "" {
-		return nil, ErrMissingPubKey
-	}
-
-	tag := nostr.Tag{"nonce", "", strconv.Itoa(targetDifficulty)}
-	event.Tags = append(event.Tags, tag)
-	var nonce uint64
-	start := time.Now()
-	for {
-		nonce++
-		tag[1] = strconv.FormatUint(nonce, 10)
-		if Difficulty(event.GetID()) >= targetDifficulty {
-			return event, nil
-		}
-		// benchmarks show one iteration is approx 3000ns on i7-8565U @ 1.8GHz.
-		// so, check every 30ms; arbitrary
-		if nonce%10000 == 0 && time.Since(start) > timeout {
-			return nil, ErrGenerateTimeout
-		}
-	}
-}

utils.go

@@ -19,7 +19,7 @@ func IsValidRelayURL(u string) bool {
 }
 
 func IsValid32ByteHex(thing string) bool {
-	if strings.ToLower(thing) != thing {
+	if !isLowerHex(thing) {
 		return false
 	}
 	if len(thing) != 64 {