From d9bf6c432e2c28600ee5aa562f3f36f48cb7b7cc Mon Sep 17 00:00:00 2001
From: Christopher Ng <chrng8@gmail.com>
Date: Thu, 27 Jun 2024 16:56:35 -0700
Subject: feat: Add method to validate an IHasher hash

Signed-off-by: Christopher Ng <chrng8@gmail.com>
---
 lib/private/Security/Hasher.php | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'lib/private/Security')

diff --git a/lib/private/Security/Hasher.php b/lib/private/Security/Hasher.php
index 22e850157fc..081cac51161 100644
--- a/lib/private/Security/Hasher.php
+++ b/lib/private/Security/Hasher.php
@@ -190,4 +190,18 @@ class Hasher implements IHasher {
 
 		return $default;
 	}
+
+	public function validate(string $prefixedHash): bool {
+		$splitHash = $this->splitHash($prefixedHash);
+		if (empty($splitHash)) {
+			return false;
+		}
+		$validVersions = [3, 2, 1];
+		$version = $splitHash['version'];
+		if (!in_array($version, $validVersions, true)) {
+			return false;
+		}
+		$algoName = password_get_info($splitHash['hash'])['algoName'];
+		return $algoName !== 'unknown';
+	}
 }
-- 
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