=== Keccak-1600 Core Function Tests ===

Test 1: crypto_core_keccak1600_init
  PASS: State initialized to zeros

Test 2: crypto_core_keccak1600_xor_bytes and extract_bytes
  PASS: XOR and extract work correctly

Test 3: Keccak-f[1600] (24 rounds) - Zero input
PASS:   Keccak-f[1600] zero

Test 4: Keccak-f[1600] (24 rounds) - Pattern 0xa3 input
PASS:   Keccak-f[1600] pattern

Test 5: Keccak-p[1600,12] (12 rounds) - Zero input
PASS:   Keccak-p[1600,12] zero

Test 6: Verify 12-round and 24-round differ
  PASS: 12-round and 24-round produce different outputs
    First difference at byte 0: 12-round=0x17, 24-round=0xe7

Test 7: Double permutation consistency
  After 24+24 rounds: 3ccb6ef94d955c2d6db55770d02c336a6c6bd770128d3d0994d06955b2d9208a
  After 12+12 rounds: 048cbb36dc66034bc96a2de69835165f46e73b55de051b436c7a6154c9469f48

=== Test Summary ===
All tests PASSED!