Example usage for java.security MessageDigest update

Introduction

In this page you can find the example usage for java.security MessageDigest update.

Prototype

public void update(byte[] input, int offset, int len) 

Source Link

Document

Updates the digest using the specified array of bytes, starting at the specified offset.

Usage

From source file:com.cmri.bpt.common.util.DigestUtil.java

private static byte[] digest(InputStream input, String algorithm) throws IOException {
    try {/*from w w w  .  j  av  a 2s. c  o  m*/
        MessageDigest messageDigest = MessageDigest.getInstance(algorithm);
        int bufferLength = 8 * 1024;
        byte[] buffer = new byte[bufferLength];
        int read = input.read(buffer, 0, bufferLength);

        while (read > -1) {
            messageDigest.update(buffer, 0, read);
            read = input.read(buffer, 0, bufferLength);
        }

        return messageDigest.digest();
    } catch (GeneralSecurityException e) {
        throw ExceptionUtil.asUnChecked(e);
    }
}

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From source file:com.modoop.core.security.utils.Digests.java

private static byte[] digest(InputStream input, String algorithm) throws IOException {
    try {/*from  w  w w.j  a  v  a 2  s.  c  om*/
        MessageDigest messageDigest = MessageDigest.getInstance(algorithm);
        int bufferLength = 8 * 1024;
        byte[] buffer = new byte[bufferLength];
        int read = input.read(buffer, 0, bufferLength);

        while (read > -1) {
            messageDigest.update(buffer, 0, read);
            read = input.read(buffer, 0, bufferLength);
        }

        return messageDigest.digest();
    } catch (GeneralSecurityException e) {
        throw ExceptionUtils.unchecked(e);
    }
}

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From source file:com.topsem.common.security.utils.Digests.java

private static byte[] digest(InputStream input, String algorithm) throws IOException {
    try {/* www.ja v a  2  s . com*/
        MessageDigest messageDigest = MessageDigest.getInstance(algorithm);
        int bufferLength = 8 * 1024;
        byte[] buffer = new byte[bufferLength];
        int read = input.read(buffer, 0, bufferLength);

        while (read > -1) {
            messageDigest.update(buffer, 0, read);
            read = input.read(buffer, 0, bufferLength);
        }

        return messageDigest.digest();
    } catch (GeneralSecurityException e) {
        throw Throwables.propagate(e);
    }
}

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From source file:Main.java

public static String getFileMD5String(File file) {
    if (!file.exists() || file.isFile()) {
        return null;
    }// ww w. jav  a2s  .  com
    MessageDigest messagedigest;
    FileInputStream fis = null;
    try {
        fis = new FileInputStream(file);
        messagedigest = MessageDigest.getInstance("MD5");
        int len;
        byte[] buf = new byte[1024];
        while ((len = fis.read(buf)) != -1) {
            messagedigest.update(buf, 0, len);
        }
        byte md5Bytes[] = messagedigest.digest();
        StringBuffer stringbuffer = new StringBuffer();
        for (int i = 0; i < md5Bytes.length; i++) {
            stringbuffer.append(HEX_DIGITS[(md5Bytes[i] & 0xf0) >>> 4]);
            stringbuffer.append(HEX_DIGITS[md5Bytes[i] & 0x0f]);
        }
        return stringbuffer.toString();
    } catch (IOException e) {
        e.printStackTrace();
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } finally {
        if (fis != null) {
            try {
                fis.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    return null;
}

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From source file:Main.java

public static String getBinaryHash(File apk, String algo) {
    FileInputStream fis = null;/*from  ww  w  .ja v  a2 s  .c  o m*/
    BufferedInputStream bis = null;
    try {
        MessageDigest md = MessageDigest.getInstance(algo);
        fis = new FileInputStream(apk);
        bis = new BufferedInputStream(fis);

        byte[] dataBytes = new byte[524288];
        int nread = 0;

        while ((nread = bis.read(dataBytes)) != -1)
            md.update(dataBytes, 0, nread);

        byte[] mdbytes = md.digest();
        return toHexString(mdbytes);
    } catch (IOException e) {
        Log.e("FDroid", "Error reading \"" + apk.getAbsolutePath() + "\" to compute " + algo + " hash.");
        return null;
    } catch (NoSuchAlgorithmException e) {
        Log.e("FDroid", "Device does not support " + algo + " MessageDisgest algorithm");
        return null;
    } finally {
        closeQuietly(fis);
    }
}

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From source file:apm.common.security.Digests.java

private static byte[] digest(InputStream input, String algorithm) throws IOException {
    try {//from  w w w.  j a v a  2  s.  co  m
        MessageDigest messageDigest = MessageDigest.getInstance(algorithm);
        int bufferLength = 8 * 1024;
        byte[] buffer = new byte[bufferLength];
        int read = input.read(buffer, 0, bufferLength);

        while (read > -1) {
            messageDigest.update(buffer, 0, read);
            read = input.read(buffer, 0, bufferLength);
        }

        return messageDigest.digest();
    } catch (GeneralSecurityException e) {
        throw Exceptions.unchecked(e);
    }
}

---

From source file:com.apabi.qrcode.utils.DigestUtils.java

/**
 * , ?md5sha1.//from  w  w w . ja va 2s .c om
 */
private static String digest(final InputStream input, final String algorithm) throws IOException {
    try {
        MessageDigest messageDigest = MessageDigest.getInstance(algorithm);
        int bufferLength = BUFFER_LENGTH;
        byte[] buffer = new byte[bufferLength];
        int read = input.read(buffer, 0, bufferLength);

        while (read > -1) {
            messageDigest.update(buffer, 0, read);
            read = input.read(buffer, 0, bufferLength);
        }

        return EncodeUtils.hexEncode(messageDigest.digest());

    } catch (GeneralSecurityException e) {
        throw new IllegalStateException("Security exception", e);
    }
}

---

From source file:Main.java

public static String hashStream(InputStream in, String hash) throws IOException {
    MessageDigest md5 = null;
    try {// w  ww .j  av a2s . c o  m
        md5 = MessageDigest.getInstance(hash);
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }

    int bsize = 4096;
    byte[] buffer = new byte[bsize];
    int length;

    while ((length = in.read(buffer, 0, bsize)) > 0) {
        md5.update(buffer, 0, length);
    }

    return toHex(md5.digest());
}

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From source file:com.myb.portal.util.Digests.java

private static byte[] digest(InputStream input, String algorithm) throws IOException {
    try {/* www  .  j a  v  a 2  s. c  o m*/
        MessageDigest messageDigest = MessageDigest.getInstance(algorithm);
        int bufferLength = 8 * 1024;
        byte[] buffer = new byte[bufferLength];
        int read = input.read(buffer, 0, bufferLength);

        while (read > -1) {
            messageDigest.update(buffer, 0, read);
            read = input.read(buffer, 0, bufferLength);
        }

        return messageDigest.digest();
    } catch (GeneralSecurityException e) {

        //         throw Exceptions.unchecked(e);
    }
    return null;
}

---

From source file:com.thinkgem.jeesite.modules.sso.util.Digests.java

private static byte[] digest(InputStream input, String algorithm) throws IOException {
    try {//  w  ww . ja v  a  2s. co m
        MessageDigest messageDigest = MessageDigest.getInstance(algorithm);
        int bufferLength = 8 * 1024;
        byte[] buffer = new byte[bufferLength];
        int read = input.read(buffer, 0, bufferLength);

        while (read > -1) {
            messageDigest.update(buffer, 0, read);
            read = input.read(buffer, 0, bufferLength);
        }

        return messageDigest.digest();
    } catch (GeneralSecurityException e) {
        return "".getBytes();
    }
}

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