Examples with MessageDigest java.security.MessageDigest used on opensource projects

Example 76 with MessageDigest

use of java.security.MessageDigest in project translationstudio8 by heartsome.

the class FileBasic method getMD5.

/**
	 * 计算文件的 MD5 码.
	 * @param file
	 *            	文件对象
	 * @return String
	 * 				文件的 MD5 编码
	 * @throws NoSuchAlgorithmException
	 *             the no such algorithm exception
	 * @throws IOException
	 *             Signals that an I/O exception has occurred.
	 */
public static String getMD5(File file) throws NoSuchAlgorithmException, IOException {
    FileInputStream fis = null;
    try {
        MessageDigest md = MessageDigest.getInstance("MD5");
        fis = new FileInputStream(file);
        byte[] buffer = new byte[8192];
        int length = -1;
        while ((length = fis.read(buffer)) != -1) {
            md.update(buffer, 0, length);
        }
        return bytesToString(md.digest());
    } finally {
        if (fis != null) {
            fis.close();
        }
    }
}

Example 77 with MessageDigest

use of java.security.MessageDigest in project xUtils3 by wyouflf.

the class MD5 method md5.

public static String md5(File file) throws IOException {
    MessageDigest messagedigest = null;
    FileInputStream in = null;
    FileChannel ch = null;
    byte[] encodeBytes = null;
    try {
        messagedigest = MessageDigest.getInstance("MD5");
        in = new FileInputStream(file);
        ch = in.getChannel();
        MappedByteBuffer byteBuffer = ch.map(FileChannel.MapMode.READ_ONLY, 0, file.length());
        messagedigest.update(byteBuffer);
        encodeBytes = messagedigest.digest();
    } catch (NoSuchAlgorithmException neverHappened) {
        throw new RuntimeException(neverHappened);
    } finally {
        IOUtil.closeQuietly(in);
        IOUtil.closeQuietly(ch);
    }
    return toHexString(encodeBytes);
}

Example 78 with MessageDigest

use of java.security.MessageDigest in project XobotOS by xamarin.

the class LockPatternUtils method patternToHash.

/*
     * Generate an SHA-1 hash for the pattern. Not the most secure, but it is
     * at least a second level of protection. First level is that the file
     * is in a location only readable by the system process.
     * @param pattern the gesture pattern.
     * @return the hash of the pattern in a byte array.
     */
private static byte[] patternToHash(List<LockPatternView.Cell> pattern) {
    if (pattern == null) {
        return null;
    }
    final int patternSize = pattern.size();
    byte[] res = new byte[patternSize];
    for (int i = 0; i < patternSize; i++) {
        LockPatternView.Cell cell = pattern.get(i);
        res[i] = (byte) (cell.getRow() * 3 + cell.getColumn());
    }
    try {
        MessageDigest md = MessageDigest.getInstance("SHA-1");
        byte[] hash = md.digest(res);
        return hash;
    } catch (NoSuchAlgorithmException nsa) {
        return res;
    }
}

Example 79 with MessageDigest

use of java.security.MessageDigest in project hibernate-orm by hibernate.

the class Constraint method hashedName.

/**
	 * Hash a constraint name using MD5. Convert the MD5 digest to base 35
	 * (full alphanumeric), guaranteeing
	 * that the length of the name will always be smaller than the 30
	 * character identifier restriction enforced by a few dialects.
	 * 
	 * @param s
	 *            The name to be hashed.
	 * @return String The hased name.
	 */
public static String hashedName(String s) {
    try {
        MessageDigest md = MessageDigest.getInstance("MD5");
        md.reset();
        md.update(s.getBytes());
        byte[] digest = md.digest();
        BigInteger bigInt = new BigInteger(1, digest);
        // character identifier restriction enforced by a few dialects.
        return bigInt.toString(35);
    } catch (NoSuchAlgorithmException e) {
        throw new HibernateException("Unable to generate a hashed Constraint name!", e);
    }
}

Example 80 with MessageDigest

use of java.security.MessageDigest in project spring-boot by spring-projects.

the class ApplicationTemp method generateHash.

private byte[] generateHash(Class<?> sourceClass) {
    ApplicationHome home = new ApplicationHome(sourceClass);
    MessageDigest digest;
    try {
        digest = MessageDigest.getInstance("SHA-1");
        update(digest, home.getSource());
        update(digest, home.getDir());
        update(digest, System.getProperty("user.dir"));
        update(digest, System.getProperty("java.home"));
        update(digest, System.getProperty("java.class.path"));
        update(digest, System.getProperty("sun.java.command"));
        update(digest, System.getProperty("sun.boot.class.path"));
        return digest.digest();
    } catch (Exception ex) {
        throw new IllegalStateException(ex);
    }
}