Examples with HashAlgorithm org.apache.poi.poifs.crypt.HashAlgorithm used on opensource projects

Example 11 with HashAlgorithm

use of org.apache.poi.poifs.crypt.HashAlgorithm in project poi by apache.

the class BinaryRC4Encryptor method confirmPassword.

@Override
public void confirmPassword(String password, byte[] keySpec, byte[] keySalt, byte[] verifier, byte[] verifierSalt, byte[] integritySalt) {
    BinaryRC4EncryptionVerifier ver = (BinaryRC4EncryptionVerifier) getEncryptionInfo().getVerifier();
    ver.setSalt(verifierSalt);
    SecretKey skey = BinaryRC4Decryptor.generateSecretKey(password, ver);
    setSecretKey(skey);
    try {
        Cipher cipher = BinaryRC4Decryptor.initCipherForBlock(null, 0, getEncryptionInfo(), skey, Cipher.ENCRYPT_MODE);
        byte[] encryptedVerifier = new byte[16];
        cipher.update(verifier, 0, 16, encryptedVerifier);
        ver.setEncryptedVerifier(encryptedVerifier);
        HashAlgorithm hashAlgo = ver.getHashAlgorithm();
        MessageDigest hashAlg = CryptoFunctions.getMessageDigest(hashAlgo);
        byte[] calcVerifierHash = hashAlg.digest(verifier);
        byte[] encryptedVerifierHash = cipher.doFinal(calcVerifierHash);
        ver.setEncryptedVerifierHash(encryptedVerifierHash);
    } catch (GeneralSecurityException e) {
        throw new EncryptedDocumentException("Password confirmation failed", e);
    }
}