From 9893279b03658b08c750de71a6cff0725006786a Mon Sep 17 00:00:00 2001
From: Vitor Pamplona <vitor@vitorpamplona.com>
Date: Thu, 2 Apr 2026 17:48:31 -0400
Subject: [PATCH] Compute image hashes without having to load the entire file
 in memory

---
 .../amethyst/ui/components/ZoomableContentView.kt           | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/amethyst/src/main/java/com/vitorpamplona/amethyst/ui/components/ZoomableContentView.kt b/amethyst/src/main/java/com/vitorpamplona/amethyst/ui/components/ZoomableContentView.kt
index 357f85ec4..6321e4fd4 100644
--- a/amethyst/src/main/java/com/vitorpamplona/amethyst/ui/components/ZoomableContentView.kt
+++ b/amethyst/src/main/java/com/vitorpamplona/amethyst/ui/components/ZoomableContentView.kt
@@ -109,7 +109,7 @@ import com.vitorpamplona.quartz.nip19Bech32.Nip19Parser
 import com.vitorpamplona.quartz.nip19Bech32.entities.NEvent
 import com.vitorpamplona.quartz.nip94FileMetadata.tags.DimensionTag
 import com.vitorpamplona.quartz.utils.Log
-import com.vitorpamplona.quartz.utils.sha256.sha256
+import com.vitorpamplona.quartz.utils.sha256.sha256StreamWithCount
 import kotlinx.collections.immutable.ImmutableList
 import kotlinx.collections.immutable.persistentListOf
 import kotlinx.coroutines.CancellationException
@@ -1035,8 +1035,8 @@ private fun verifyHash(content: MediaUrlContent): Boolean? {
     if (content.hash == null) return null
 
     Amethyst.instance.diskCache.openSnapshot(content.url)?.use { snapshot ->
-        val hash = sha256(snapshot.data.toFile().readBytes()).toHexKey()
-        return hash == content.hash
+        val (hashBytes, _) = sha256StreamWithCount(snapshot.data.toFile().inputStream())
+        return hashBytes.toHexKey() == content.hash
     }
 
     return null