Package org.apache.poi.poifs.crypt

Examples of org.apache.poi.poifs.crypt.HashAlgorithm

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        CipherAlgorithm ca = CipherAlgorithm.fromXmlId(keyData.getCipherAlgorithm().toString(), keyBits);
        setCipherAlgorithm(ca);

        int hashSize = keyData.getHashSize();

        HashAlgorithm ha = HashAlgorithm.fromEcmaId(keyData.getHashAlgorithm().toString());
        setHashAlgorithm(ha);

        if (getHashAlgorithm().hashSize != hashSize) {
            throw new EncryptedDocumentException("Unsupported hash algorithm: " +
                    keyData.getHashAlgorithm() + " @ " + hashSize + " bytes");
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     * set decryption password
     */
    public boolean verifyPassword(String password) throws GeneralSecurityException {
        AgileEncryptionVerifier ver = builder.getVerifier();
        AgileEncryptionHeader header = builder.getHeader();
        HashAlgorithm hashAlgo = header.getHashAlgorithmEx();
        CipherAlgorithm cipherAlgo = header.getCipherAlgorithm();
        int blockSize = header.getBlockSize();
        int keySize = header.getKeySize()/8;

        byte[] pwHash = hashPassword(password, ver.getHashAlgorithm(), ver.getSalt(), ver.getSpinCount());
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     * @throws GeneralSecurityException
     */
    public boolean verifyPassword(KeyPair keyPair, X509Certificate x509) throws GeneralSecurityException {
        AgileEncryptionVerifier ver = builder.getVerifier();
        AgileEncryptionHeader header = builder.getHeader();
        HashAlgorithm hashAlgo = header.getHashAlgorithmEx();
        CipherAlgorithm cipherAlgo = header.getCipherAlgorithm();
        int blockSize = header.getBlockSize();
       
        AgileCertificateEntry ace = null;
        for (AgileCertificateEntry aceEntry : ver.getCertificates()) {
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    protected static byte[] hashInput(AgileEncryptionInfoBuilder builder, byte pwHash[], byte blockKey[], byte inputKey[], int cipherMode) {
        EncryptionVerifier ver = builder.getVerifier();
        int keySize = builder.getDecryptor().getKeySizeInBytes();
        int blockSize = builder.getDecryptor().getBlockSizeInBytes();
        HashAlgorithm hashAlgo = ver.getHashAlgorithm();
        byte[] salt = ver.getSalt();

        byte intermedKey[] = generateKey(pwHash, hashAlgo, blockKey, keySize);
        SecretKey skey = new SecretKeySpec(intermedKey, ver.getCipherAlgorithm().jceId);
        byte[] iv = generateIv(hashAlgo, salt, null, blockSize);
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            throw new EncryptedDocumentException(e);
        }
    }
   
    protected static SecretKey generateSecretKey(String password, EncryptionVerifier ver, int keySize) {
        HashAlgorithm hashAlgo = ver.getHashAlgorithm();

        byte pwHash[] = hashPassword(password, hashAlgo, ver.getSalt(), ver.getSpinCount());

        byte[] blockKey = new byte[4];
        LittleEndian.putInt(blockKey, 0, 0);
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            if (hashVal == null || algoName == null || saltVal == null || spinCount == null) {
                return false;
            }
           
            byte hash1[] = DatatypeConverter.parseBase64Binary(hashVal);
            HashAlgorithm hashAlgo = HashAlgorithm.fromString(algoName);
            byte salt[] = DatatypeConverter.parseBase64Binary(saltVal);
            int spinCnt = Integer.parseInt(spinCount);
            byte hash2[] = CryptoFunctions.hashPassword(password, hashAlgo, salt, spinCnt, false);
            return Arrays.equals(hash1, hash2);
        }
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Related Classes of org.apache.poi.poifs.crypt.HashAlgorithm

  • org.apache.poi.poifs.crypt.agile.AgileDecryptor
  • org.apache.poi.poifs.crypt.agile.AgileEncryptionHeader
  • org.apache.poi.poifs.crypt.agile.AgileEncryptionVerifier
  • org.apache.poi.poifs.crypt.agile.AgileEncryptor
  • org.apache.poi.poifs.crypt.standard.StandardDecryptor
  • org.apache.poi.xssf.usermodel.helpers.XSSFPaswordHelper
  • org.apache.poi.xwpf.usermodel.XWPFSettings
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