initial commit

src/commonMain/kotlin/com/infendro/otp/SecretGenerator.kt

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+package com.infendro.otp
+
+import com.infendro.hash.*
+import kotlin.random.Random
+
+object SecretGenerator {
+    private val random = Random.Default
+
+    fun generate(
+        algorithm: HashFunction = SHA1,
+    ): ByteArray {
+        val bytes = when (algorithm) {
+            MD5 -> 16
+            SHA1 -> 20
+            SHA224 -> 28
+            SHA256 -> 32
+            SHA384 -> 48
+            SHA512 -> 64
+        }
+
+        return ByteArray(bytes).also {
+            random.nextBytes(it)
+        }
+    }
+}