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

Example 41 with DigestInputStream

use of java.security.DigestInputStream in project fdroidclient by f-droid.

the class JKS method engineLoad.

public void engineLoad(InputStream in, char[] passwd) throws IOException, NoSuchAlgorithmException, CertificateException {
    MessageDigest md = MessageDigest.getInstance("SHA");
    if (passwd != null)
        md.update(charsToBytes(passwd));
    // HAR HAR
    md.update("Mighty Aphrodite".getBytes("UTF-8"));
    aliases.clear();
    trustedCerts.clear();
    privateKeys.clear();
    certChains.clear();
    dates.clear();
    if (in == null)
        return;
    DataInputStream din = new DataInputStream(new DigestInputStream(in, md));
    if (din.readInt() != MAGIC)
        throw new IOException("not a JavaKeyStore");
    // version no.
    din.readInt();
    final int n = din.readInt();
    aliases.ensureCapacity(n);
    if (n < 0)
        throw new LoadKeystoreException("Malformed key store");
    for (int i = 0; i < n; i++) {
        int type = din.readInt();
        String alias = din.readUTF();
        aliases.add(alias);
        dates.put(alias, new Date(din.readLong()));
        switch(type) {
            case PRIVATE_KEY:
                int len = din.readInt();
                byte[] encoded = new byte[len];
                din.read(encoded);
                privateKeys.put(alias, encoded);
                int count = din.readInt();
                Certificate[] chain = new Certificate[count];
                for (int j = 0; j < count; j++) chain[j] = readCert(din);
                certChains.put(alias, chain);
                break;
            case TRUSTED_CERT:
                trustedCerts.put(alias, readCert(din));
                break;
            default:
                throw new LoadKeystoreException("Malformed key store");
        }
    }
    if (passwd != null) {
        byte[] computedHash = md.digest();
        byte[] storedHash = new byte[20];
        din.read(storedHash);
        if (!MessageDigest.isEqual(storedHash, computedHash)) {
            throw new LoadKeystoreException("Incorrect password, or integrity check failed.");
        }
    }
}

Example 42 with DigestInputStream

use of java.security.DigestInputStream in project cytoscape-impl by cytoscape.

the class AppParser method getChecksum.

/**
 * Obtain the SHA-512 checksum of a file, in the following format: sha512:3c1c..
 * @param file The file to find the checksum
 * @return The SHA-512 checksum, in format: sha512:e1..
 * @throws ChecksumException If unable to obtain SHA-512 algorithm implementation,
 * file does not exist, or IO error while reading
 */
public String getChecksum(File file) throws ChecksumException {
    MessageDigest messageDigest;
    try {
        messageDigest = MessageDigest.getInstance("SHA-512");
    } catch (NoSuchAlgorithmException e) {
        throw new ChecksumException("Unable to obtain SHA-512 algorithm implementation");
    }
    InputStream inputStream;
    try {
        inputStream = new FileInputStream(file);
    } catch (FileNotFoundException e) {
        throw new ChecksumException("File " + file.getAbsolutePath() + " does not exist.");
    }
    try {
        inputStream = new DigestInputStream(inputStream, messageDigest);
        byte[] byteBuffer = new byte[128];
        while (inputStream.available() != 0) {
            inputStream.read(byteBuffer);
        }
    } catch (IOException e) {
        throw new ChecksumException("Error reading from file " + file + ", " + e.getMessage());
    } finally {
        try {
            inputStream.close();
        } catch (IOException e) {
        // logger.warn("Failed to close input stream on file " + file.getAbsolutePath() + ", " + e.getMessage());
        }
    }
    byte[] digest = messageDigest.digest();
    String result = "";
    for (int i = 0; i < digest.length; i++) {
        // Convert each byte to a 2-digit hex number, adding 0x100 to obtain the 0 if the byte is 0E
        result += Integer.toString((digest[i] & 0xff) + 0x100, 16).substring(1);
    }
    return "sha512:" + result;
}

Example 43 with DigestInputStream

use of java.security.DigestInputStream in project android_packages_apps_Gallery2 by LineageOS.

the class Fingerprint method fromInputStream.

/**
 * Creates a Fingerprint based on the contents of a file.
 *
 * Note that this will close() stream after calculating the digest.
 * @param byteCount length of original data will be stored at byteCount[0] as a side product
 *        of the fingerprint calculation
 */
public static Fingerprint fromInputStream(InputStream stream, long[] byteCount) throws IOException {
    DigestInputStream in = null;
    long count = 0;
    try {
        in = new DigestInputStream(stream, DIGESTER);
        byte[] bytes = new byte[8192];
        while (true) {
            // scan through file to compute a fingerprint.
            int n = in.read(bytes);
            if (n < 0)
                break;
            count += n;
        }
    } finally {
        if (in != null)
            in.close();
    }
    if ((byteCount != null) && (byteCount.length > 0))
        byteCount[0] = count;
    return new Fingerprint(in.getMessageDigest().digest());
}

Example 44 with DigestInputStream

use of java.security.DigestInputStream in project lzc_app_lib by httplzc.

the class StringManagerUtil method fileHash.

public static String fileHash(String inputFile, String hashType) {
    int bufferSize = 256 * 1024;
    FileInputStream fileInputStream = null;
    DigestInputStream digestInputStream = null;
    try {
        MessageDigest messageDigest = MessageDigest.getInstance(hashType);
        // 使用DigestInputStream
        fileInputStream = new FileInputStream(inputFile);
        digestInputStream = new DigestInputStream(fileInputStream, messageDigest);
        byte[] buffer = new byte[bufferSize];
        while (digestInputStream.read(buffer) > 0) ;
        // 获取最终的MessageDigest
        messageDigest = digestInputStream.getMessageDigest();
        // 拿到结果，也是字节数组，包含16个元素
        byte[] hash = messageDigest.digest();
        StringBuilder hex = new StringBuilder(hash.length * 2);
        for (byte b : hash) {
            if ((b & 0xFF) < 0x10)
                hex.append("0");
            hex.append(Integer.toHexString(b & 0xFF));
        }
        return hex.toString();
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    } finally {
        try {
            if (digestInputStream != null)
                digestInputStream.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        try {
            if (fileInputStream != null)
                fileInputStream.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

Example 45 with DigestInputStream

use of java.security.DigestInputStream in project javautils by jiadongpo.

the class Md5Hasher method md5Hash.

public static byte[] md5Hash(final File file) throws IOException {
    final MessageDigest digest = getMd5Digest();
    final FileInputStream fStream = new FileInputStream(file);
    final BufferedInputStream bStream = new BufferedInputStream(fStream);
    final DigestInputStream blobStream = new DigestInputStream(bStream, digest);
    final byte[] buffer = new byte[BYTE_BUFFER_SIZE];
    int num = 0;
    do {
        num = blobStream.read(buffer);
    } while (num > 0);
    bStream.close();
    return digest.digest();
}