Example usage for java.security DigestInputStream read

Introduction

In this page you can find the example usage for java.security DigestInputStream read.

Prototype

public int read() throws IOException 

Source Link

Document

Reads a byte, and updates the message digest (if the digest function is on).

Usage

From source file:de.escidoc.bwelabs.deposit.DepositServiceSpec.java

private String calculateCheckSum(Configuration conf, InputStream is)
        throws NoSuchAlgorithmException, IOException {
    MessageDigest instance = MessageDigest
            .getInstance(conf.getProperty(Configuration.PROPERTY_CHECKSUM_ALGORITHM));
    DigestInputStream digest = new DigestInputStream(is, instance);

    int read = digest.read();
    while (read != -1) {
        read = digest.read();/*  w  w  w  .  ja  v a 2 s . c o  m*/
    }
    return Utility.byteArraytoHexString(instance.digest());
}

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From source file:com.diversityarrays.dalclient.DalUtil.java

/**
 * Computes the MD5 checksum of the bytes in the InputStream.
 * The input is close()d on exit./*from ww  w. java 2  s  .c o m*/
 * @param input is the InputStream for which to compute the checksum
 * @return the MD5 checksum as a String of hexadecimal characters
 */
static public String computeMD5checksum(InputStream input) {
    DigestInputStream dis = null;
    Formatter formatter = null;
    try {
        MessageDigest md = MessageDigest.getInstance(DIGEST_MD5);
        dis = new DigestInputStream(input, md);
        while (-1 != dis.read())
            ;

        byte[] digest = md.digest();
        formatter = new Formatter();
        for (byte b : digest) {
            formatter.format("%02x", b); //$NON-NLS-1$
        }
        return formatter.toString();
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException(e);
    } catch (IOException e) {
        throw new RuntimeException(e);
    } finally {
        if (dis != null) {
            try {
                dis.close();
            } catch (IOException ignore) {
            }
        }
        if (formatter != null) {
            formatter.close();
        }
    }
}

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From source file:com.zimbra.cs.store.triton.TritonBlobStoreManager.java

@Override
public byte[] getHash(Blob blob) throws ServiceException, IOException {
    MessageDigest digest = newDigest();
    DigestInputStream dis = null;
    InputStream bis = null;//  www.  ja  va  2 s  . c  o  m
    try {
        bis = blob.getInputStream();
        dis = new DigestInputStream(bis, digest);
        while (dis.read() >= 0) {
        }
        return digest.digest();
    } finally {
        ByteUtil.closeStream(bis);
        ByteUtil.closeStream(dis);
    }
}

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From source file:edu.ku.brc.specify.plugins.ipadexporter.iPadRepositoryHelper.java

/**
 * @param file/* w  ww  . j av a  2  s .c  o  m*/
 * @return
 * @throws Exception
 */
private String calculateHash(final File file) throws Exception {
    if (sha1 != null) {
        FileInputStream fis = new FileInputStream(file);
        BufferedInputStream bis = new BufferedInputStream(fis);
        DigestInputStream dis = new DigestInputStream(bis, sha1);

        // read the file and update the hash calculation
        while (dis.read() != -1)
            ;

        // get the hash value as byte array
        byte[] hash = sha1.digest();

        return byteArray2Hex(hash);
    }
    return null;
}

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From source file:de.huxhorn.sulky.blobs.impl.BlobRepositoryImpl.java

private boolean valid(String id, File file) {
    if (!validating) {
        return true;
    }//  ww w  .jav a 2 s.  co  m
    MessageDigest digest = createMessageDigest();

    FileInputStream input = null;
    try {
        input = new FileInputStream(file);
        DigestInputStream dis = new DigestInputStream(input, digest);
        for (;;) {
            if (dis.read() < 0) {
                break;
            }
        }
        byte[] hash = digest.digest();
        Formatter formatter = new Formatter();
        for (byte b : hash) {
            formatter.format("%02x", b);
        }
        return formatter.toString().equals(id);
    } catch (IOException e) {
        // ignore...
    } finally {
        IOUtils.closeQuietly(input);
    }
    return false;
}

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From source file:org.sead.va.dataone.Object.java

@POST
@Path("/{objectId}")
@Consumes(MediaType.APPLICATION_XML)/*from   w  w  w  .j a v  a 2s.c om*/
@Produces(MediaType.APPLICATION_XML)
public Response addObject(@Context HttpServletRequest request, @PathParam("objectId") String id,
        @QueryParam("creators") String creators, @QueryParam("deprecateFgdc") String deprecateFgdc,
        String fgdcString) throws UnsupportedEncodingException {

    Document metaInfo = new Document();
    metaInfo.put(Constants.META_FORMAT, "http://www.fgdc.gov/schemas/metadata/fgdc-std-001-1998.xsd");
    metaInfo.put(Constants.RO_ID, id);

    org.w3c.dom.Document doc = null;
    try {
        DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
        doc = dBuilder.parse(new ByteArrayInputStream(fgdcString.getBytes()));
    } catch (ParserConfigurationException e) {
        System.out.println(e.getMessage());
    } catch (SAXException e) {
        System.out.println(e.getMessage());
    } catch (IOException e) {
        System.out.println(e.getMessage());
    }

    String creator = "";
    if (creators != null && !creators.equals("")) {
        creator = URLEncoder.encode(creators.split("\\|")[0].replace(" ", "").replace(",", "")) + "-";
    }
    String fgdcId = "seadva-" + creator + UUID.randomUUID().toString();
    metaInfo.put(Constants.FGDC_ID, fgdcId);

    final byte[] utf8Bytes = fgdcString.getBytes("UTF-8");
    metaInfo.put(Constants.SIZE, utf8Bytes.length);

    String strDate = simpleDateFormat.format(new Date());
    metaInfo.put(Constants.META_UPDATE_DATE, strDate);
    metaInfo.put(Constants.DEPOSIT_DATE, strDate);

    try {
        DigestInputStream digestStream = new DigestInputStream(new ByteArrayInputStream(fgdcString.getBytes()),
                MessageDigest.getInstance("SHA-1"));
        if (digestStream.read() != -1) {
            byte[] buf = new byte[1024];
            while (digestStream.read(buf) != -1)
                ;
        }
        byte[] digest = digestStream.getMessageDigest().digest();
        metaInfo.put(Constants.FIXITY_FORMAT, "SHA-1");
        metaInfo.put(Constants.FIXITY_VAL, new String(Hex.encodeHex(digest)));
    } catch (IOException e) {
        e.printStackTrace();
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }

    Document document = new Document();
    document.put(Constants.META_INFO, metaInfo);
    document.put(Constants.METADATA, fgdcString);

    RO_STATUS updated = RO_STATUS.NOT_EXIST;
    updated = deprecateFGDC(id, document);
    if (deprecateFgdc != null && !deprecateFgdc.equals("") && updated == RO_STATUS.NOT_EXIST) {
        updated = deprecateFGDC(deprecateFgdc, document);
    }

    if (updated == RO_STATUS.NON_IDENTICAL || updated == RO_STATUS.NOT_EXIST) {
        fgdcCollection.insertOne(document);
    }

    return Response.ok().build();
}

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From source file:org.dataconservancy.dcs.ingest.client.impl.DualManagerDeposit.java

void uploadFile(DcsFile file, String path) {
    try {//from  ww w .ja  v  a2  s . com

        File physicalFile = new File(path);

        DigestInputStream digestStream = new DigestInputStream(new FileInputStream(path),
                MessageDigest.getInstance(checksumAlgorithm));

        String mime = MimeUtil.getMostSpecificMimeType(MimeUtil.getMimeTypes(new File(path))).toString();

        /*
         * proceed to the end of the inputStream if we havent got there
         * apready. We need to visit every byte in order to have calculated
         * the digest.
         */
        if (digestStream.read() != -1) {
            byte[] buf = new byte[1024];
            while (digestStream.read(buf) != -1)
                ;
        }

        byte[] digest = digestStream.getMessageDigest().digest();

        /* Set the file name */
        file.setName(physicalFile.getName());

        /* Set the calculated fixity */
        DcsFixity fixity = new DcsFixity();
        fixity.setAlgorithm(checksumAlgorithm);
        fixity.setValue(new String(Hex.encodeHex(digest)));
        file.addFixity(fixity);

        /* Set the format */
        DcsFormat format = new DcsFormat();
        format.setSchemeUri("http://www.iana.org/assignments/media-types/");
        format.setFormat(mime);
        file.addFormat(format);

        long length = physicalFile.length();

        file.setSource(doUpload(path, mime, digest, length));
        file.setSizeBytes(length);
        file.setExtant(true);

    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

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From source file:edu.ku.brc.util.WebStoreAttachmentMgr.java

/**
 * @param algorithm//w  w  w. j  a  va 2 s  .  co  m
 * @param fileName
 * @return
 * @throws Exception
 */
private String calculateHash(final File file) throws Exception {
    if (sha1 != null) {
        FileInputStream fis = new FileInputStream(file);
        BufferedInputStream bis = new BufferedInputStream(fis);
        DigestInputStream dis = new DigestInputStream(bis, sha1);

        // read the file and update the hash calculation
        while (dis.read() != -1)
            ;

        // get the hash value as byte array
        byte[] hash = sha1.digest();

        dis.close();
        return byteArray2Hex(hash);
    }
    return null;
}

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From source file:com.flexoodb.common.FlexUtils.java

/**
* computes the SHA1 hashcode for the passed byte array.
*
* @param  ba byte array.//  w  w w.  j  a va  2  s .  com
* @return SHA1 string.
*/
public static String computeSHA1(byte[] ba) {
    String hash = null;
    try {

        MessageDigest sha1 = MessageDigest.getInstance("SHA1");
        InputStream is = new ByteArrayInputStream(ba);
        BufferedInputStream bis = new BufferedInputStream(is);

        DigestInputStream dis = new DigestInputStream(bis, sha1);

        while (dis.read() != -1) {
        }
        ;

        byte[] h = sha1.digest();

        Formatter formatter = new Formatter();

        for (byte b : h) {
            formatter.format("%02x", b);
        }

        hash = formatter.toString();

    } catch (Exception e) {
        e.printStackTrace();
    }
    return hash;
}

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