port multibase and jcsedssa2022 libs from streams

1 files changed, 34 insertions, 0 deletions

diff --git a/Zotlabs/Lib/Multibase.php b/Zotlabs/Lib/Multibase.php
new file mode 100644
index 000000000..099723630
--- /dev/null
+++ b/Zotlabs/Lib/Multibase.php
@@ -0,0 +1,34 @@
+<?php
+namespace Zotlabs\Lib;
+
+use StephenHill\Base58;
+
+class Multibase {
+
+    protected $key = null;
+
+    public function __construct() {
+        return $this;
+    }
+
+    public function publicKey($key) {
+        $base58 = new Base58();
+        $raw = hex2bin('ed01') . sodium_base642bin($key, SODIUM_BASE64_VARIANT_ORIGINAL_NO_PADDING);
+        return 'z' . $base58->encode($raw);
+    }
+
+    public function secretKey($key) {
+        $base58 = new Base58();
+        $raw = hex2bin('8026') . sodium_base642bin($key, SODIUM_BASE64_VARIANT_ORIGINAL_NO_PADDING);
+        return 'z' . $base58->encode($raw);
+    }
+
+    public function decode($key, $binary  = false) {
+        $base58 = new Base58();
+        $key = substr($key,1);
+        $raw = $base58->decode($key);
+        $binaryKey = substr($raw, 2);
+        return $binary ? $binaryKey : sodium_bin2base64($binaryKey, SODIUM_BASE64_VARIANT_ORIGINAL_NO_PADDING);
+    }
+
+}