Examples with BcPBESecretKeyDecryptorBuilder org.bouncycastle.openpgp.operator.bc.BcPBESecretKeyDecryptorBuilder used on opensource projects

Example 1 with BcPBESecretKeyDecryptorBuilder

use of org.bouncycastle.openpgp.operator.bc.BcPBESecretKeyDecryptorBuilder in project ant-ivy by apache.

the class OpenPGPSignatureGenerator method sign.

public void sign(File src, File dest) throws IOException {
    OutputStream out = null;
    InputStream in = null;
    InputStream keyIn = null;
    try {
        if (secring == null) {
            secring = System.getProperty("user.home") + "/.gnupg/secring.gpg";
        }
        if (pgpSec == null) {
            keyIn = new FileInputStream(secring);
            pgpSec = readSecretKey(keyIn);
        }
        PBESecretKeyDecryptor decryptor = new BcPBESecretKeyDecryptorBuilder(new BcPGPDigestCalculatorProvider()).build(password.toCharArray());
        PGPPrivateKey pgpPrivKey = pgpSec.extractPrivateKey(decryptor);
        PGPSignatureGenerator sGen = new PGPSignatureGenerator(new BcPGPContentSignerBuilder(pgpSec.getPublicKey().getAlgorithm(), PGPUtil.SHA1));
        sGen.init(PGPSignature.BINARY_DOCUMENT, pgpPrivKey);
        in = new FileInputStream(src);
        out = new BCPGOutputStream(new ArmoredOutputStream(new FileOutputStream(dest)));
        int ch = 0;
        while ((ch = in.read()) >= 0) {
            sGen.update((byte) ch);
        }
        sGen.generate().encode(out);
    } catch (PGPException e) {
        throw new IOException(e);
    } finally {
        if (out != null) {
            try {
                out.close();
            } catch (IOException e) {
            }
        }
        if (in != null) {
            try {
                in.close();
            } catch (IOException e) {
            }
        }
        if (keyIn != null) {
            try {
                keyIn.close();
            } catch (IOException e) {
            }
        }
    }
}