fixes

tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/utils/Crypto.kt

@@ -1,7 +1,19 @@
 package dev.inmo.tgbotapi.utils
 
+import dev.inmo.micro_utils.crypto.SourceBytes
 import dev.inmo.micro_utils.crypto.SourceString
 
 internal expect fun SourceString.hmacSha256(key: String): String
+private val HEX_ARRAY = "0123456789abcdef".toCharArray()
 
-internal expect fun SourceString.hex(): String
+internal fun SourceBytes.hex(): String {
+    val hexChars = CharArray(size * 2)
+    for (j in indices) {
+        val v: Int = this[j].toInt() and 0xFF
+        hexChars[j * 2] = HEX_ARRAY[v ushr 4]
+        hexChars[j * 2 + 1] = HEX_ARRAY[v and 0x0F]
+    }
+    return hexChars.concatToString()
+}
+
+internal fun SourceString.hex(): String = encodeToByteArray().hex()