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

Example 31 with MessageDigest

use of java.security.MessageDigest in project otter by alibaba.

the class SecurityUtils method getMD5Str.

/**
     * MD5 加密
     */
public static String getMD5Str(String str) {
    MessageDigest messageDigest = null;
    try {
        messageDigest = MessageDigest.getInstance("MD5");
        messageDigest.reset();
        messageDigest.update(str.getBytes("UTF-8"));
    } catch (NoSuchAlgorithmException e) {
        System.out.println("NoSuchAlgorithmException caught!");
        System.exit(-1);
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
    byte[] byteArray = messageDigest.digest();
    StringBuffer md5StrBuff = new StringBuffer();
    for (int i = 0; i < byteArray.length; i++) {
        if (Integer.toHexString(0xFF & byteArray[i]).length() == 1)
            md5StrBuff.append("0").append(Integer.toHexString(0xFF & byteArray[i]));
        else
            md5StrBuff.append(Integer.toHexString(0xFF & byteArray[i]));
    }
    return md5StrBuff.toString();
}

Example 32 with MessageDigest

use of java.security.MessageDigest in project grpc-java by grpc.

the class Util method shaBase64.

/** Returns a Base 64-encoded string containing a SHA-1 hash of {@code s}. */
public static String shaBase64(String s) {
    try {
        MessageDigest messageDigest = MessageDigest.getInstance("SHA-1");
        byte[] sha1Bytes = messageDigest.digest(s.getBytes("UTF-8"));
        return ByteString.of(sha1Bytes).base64();
    } catch (NoSuchAlgorithmException e) {
        throw new AssertionError(e);
    } catch (UnsupportedEncodingException e) {
        throw new AssertionError(e);
    }
}

Example 33 with MessageDigest

use of java.security.MessageDigest in project grpc-java by grpc.

the class Util method sha1.

/** Returns a SHA-1 hash of {@code s}. */
public static ByteString sha1(ByteString s) {
    try {
        MessageDigest messageDigest = MessageDigest.getInstance("SHA-1");
        byte[] sha1Bytes = messageDigest.digest(s.toByteArray());
        return ByteString.of(sha1Bytes);
    } catch (NoSuchAlgorithmException e) {
        throw new AssertionError(e);
    }
}

Example 34 with MessageDigest

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

the class NamingHelper 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 hashed name.
	 */
public 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 name!", e);
    }
}

Example 35 with MessageDigest

use of java.security.MessageDigest in project iosched by google.

the class CloudFileManager method calulateHash.

public static byte[] calulateHash(JsonElement contents) {
    MessageDigest md;
    try {
        md = MessageDigest.getInstance("MD5");
    } catch (NoSuchAlgorithmException e) {
        throw new InternalError("MD5 MessageDigest is not available");
    }
    OutputStream byteSink = new OutputStream() {

        @Override
        public void write(int b) throws IOException {
        // ignore, since this is only used to calculate MD5
        }
    };
    DigestOutputStream dis = new DigestOutputStream(byteSink, md);
    new Gson().toJson(contents, new OutputStreamWriter(dis, Charset.forName(DEFAULT_CHARSET_NAME)));
    return dis.getMessageDigest().digest();
}