Examples of Crc32

com.jcraft.jzlib.CRC32
java.util.zip.CRC32
A class that can be used to compute the CRC-32 of a data stream. @see Checksum @version 1.32, 11/17/05 @author David Connelly
org.apache.kafka.common.utils.Crc32
This class was taken from Hadoop org.apache.hadoop.util.PureJavaCrc32 A pure-java implementation of the CRC32 checksum that uses the same polynomial as the built-in native CRC32. This is to avoid the JNI overhead for certain uses of Checksumming where many small pieces of data are checksummed in succession. The current version is ~10x to 1.8x as fast as Sun's native java.util.zip.CRC32 in Java 1.6 @see java.util.zip.CRC32

Examples of java.util.zip.CRC32

     */
    private static 
        String getUnicodeStringIfOriginalMatches(AbstractUnicodeExtraField f,
                                                 byte[] orig) {
        if (f != null) {
            CRC32 crc32 = new CRC32();
            crc32.update(orig);
            long origCRC32 = crc32.getValue();


            if (origCRC32 == f.getNameCRC32()) {
                try {
                    return ZipEncodingHelper
                        .UTF8_ZIP_ENCODING.decode(f.getUnicodeName());

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Examples of org.apache.kafka.common.utils.Crc32


    /**
     * Compute the checksum of the record from the record contents
     */
    public static long computeChecksum(ByteBuffer buffer, int position, int size) {
        Crc32 crc = new Crc32();
        crc.update(buffer.array(), buffer.arrayOffset() + position, size);
        return crc.getValue();
    }

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