refactor padding

2026-01-22 12:44:59 +01:00
parent 5547e77c58
commit e138ec0b6d
11 changed files with 53 additions and 53 deletions
--- a/src/commonMain/kotlin/com/infendro/hash/keccak/Keccak.kt
+++ b/src/commonMain/kotlin/com/infendro/hash/keccak/Keccak.kt
@@ -53,11 +53,11 @@ open class Keccak(

    private fun pad(value: ByteArray): ByteArray {
        val size = (value.size + 2).align(block)
-        val result = ByteArray(size)
-        value.copyInto(result)
-        result[value.size] = domain
-        result[result.lastIndex] = 0x80U.toByte()
-        return result
+        return ByteArray(size).also {
+            value.copyInto(it)
+            it[value.size] = domain
+            it[size - 1] = 0x80U.toByte()
+        }
    }

    private fun absorb(state: LongArray, value: ByteArray, offset: Int, w: LongArray) {