// AWS does not appear to append part number on this API call.
		if len(chkSums) > 0 {
			OA.Checksum = &objectAttributesChecksum{
				ChecksumCRC32:     strings.Split(chkSums["CRC32"], "-")[0],
				ChecksumCRC32C:    strings.Split(chkSums["CRC32C"], "-")[0],
				ChecksumSHA1:      strings.Split(chkSums["SHA1"], "-")[0],
				ChecksumSHA256:    strings.Split(chkSums["SHA256"], "-")[0],

	c.Assert(err, nil)

	req.Body = io.NopCloser(bytes.NewReader([]byte("foobar!\n")))
	req.Trailer = http.Header{}
	req.Trailer.Set("x-amz-checksum-crc32", "rK0DXg==")

	now := UTCNow()

	req = signer.StreamingUnsignedV4(req, "", 8, now)

	maliciousHeaders := http.Header{

	MULWVW	R4, R5			// a5101f00
	MULWVW	R4, R5, R6		// a6101f00
	MULWVWU	R4, R5			// a5901f00
	MULWVWU	R4, R5, R6		// a6901f00

	MASKEQZ	R4, R5, R6		// a6101300
	MASKNEZ	R4, R5, R6		// a6901300

	// CRC32
	CRCWBW	R4, R5, R6		// a6102400
	CRCWHW	R4, R5, R6		// a6902400
	CRCWWW	R4, R5, R6		// a6102500
	CRCWVW	R4, R5, R6		// a6902500
	CRCCWBW	R4, R5, R6		// a6102600
	CRCCWHW	R4, R5, R6		// a6902600

pkg hash/adler32, func New() hash.Hash32
pkg hash/crc32, const Castagnoli ideal-int
pkg hash/crc32, const IEEE ideal-int
pkg hash/crc32, const Koopman ideal-int
pkg hash/crc32, const Size ideal-int
pkg hash/crc32, func Checksum([]uint8, *Table) uint32
pkg hash/crc32, func ChecksumIEEE([]uint8) uint32
pkg hash/crc32, func MakeTable(uint32) *Table
pkg hash/crc32, func New(*Table) hash.Hash32

      }
      while (bb.remaining() >= 16) {
        crc0 = computeForWord(crc0);
        crc1 = computeForWord(crc1);
        crc2 = computeForWord(crc2);
        crc3 = computeForWord(crc3);
        crc0 ^= bb.getInt();
        crc1 ^= bb.getInt();
        crc2 ^= bb.getInt();
        crc3 ^= bb.getInt();
      }
    }

    @Override
    protected void processRemaining(ByteBuffer bb) {
      if (finished) {

    assertHash32(0x1C8600E3, CRC_32, "hell");
    assertHash32(0x3610A686, CRC_32, "hello");
    assertHash32(0xED81F9F6, CRC_32, "hello ");
    assertHash32(0x4850DDC2, CRC_32, "hello w");
    assertHash32(0x7A2D6005, CRC_32, "hello wo");
    assertHash32(0x1C192672, CRC_32, "hello wor");
    assertHash32(0x414FA339, CRC_32, "The quick brown fox jumps over the lazy dog");

    assertHash32(0x1C8600E3, CRC_32, "hell");
    assertHash32(0x3610A686, CRC_32, "hello");
    assertHash32(0xED81F9F6, CRC_32, "hello ");
    assertHash32(0x4850DDC2, CRC_32, "hello w");
    assertHash32(0x7A2D6005, CRC_32, "hello wo");
    assertHash32(0x1C192672, CRC_32, "hello wor");
    assertHash32(0x414FA339, CRC_32, "The quick brown fox jumps over the lazy dog");

	CSNEG PL, R14, R21, R3                     // c35595da
	CNEG  LO, R7, R15                          // ef2487da
	CRC32B R17, R8, R16                        // 1041d11a
	CRC32H R3, R21, R27                        // bb46c31a
	CRC32W R22, R30, R9                        // c94bd61a
	CRC32X R20, R4, R15                        // 8f4cd49a
	CRC32CB R19, R27, R22                      // 7653d31a

 */

package com.google.common.hash;

import static com.google.common.hash.Hashing.crc32c;
import static java.nio.charset.StandardCharsets.UTF_8;

import java.util.Arrays;
import java.util.Random;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit tests for {@link Crc32c}. Known test values are from RFC 3720, Section B.4.
 *
 * @author Patrick Costello

	CRC32W R11, R11                         // 66f2450f38f1db
	CRC32L (BX), DX                         // f20f38f113
	CRC32L (R11), DX                        // f2410f38f113
	CRC32L DX, DX                           // f20f38f1d2
	CRC32L R11, DX                          // f2410f38f1d3
	CRC32L (BX), R11                        // f2440f38f11b
	CRC32L (R11), R11                       // f2450f38f11b
	CRC32L DX, R11                          // f2440f38f1da