Examples with ASN1InputStream org.bouncycastle.asn1.ASN1InputStream used on opensource projects

Example 91 with ASN1InputStream

use of org.bouncycastle.asn1.ASN1InputStream in project nhin-d by DirectProject.

the class CRLRevocationManager method getObject.

private static DERObject getObject(String oid, byte[] ext) throws AnnotatedException {
    ASN1InputStream aIn = null;
    try {
        aIn = new ASN1InputStream(ext);
        ASN1OctetString octs = (ASN1OctetString) aIn.readObject();
        IOUtils.closeQuietly(aIn);
        aIn = new ASN1InputStream(octs.getOctets());
        return aIn.readObject();
    } catch (Exception e) {
        throw new NHINDException("exception processing extension " + oid, e);
    } finally {
        IOUtils.closeQuietly(aIn);
    }
}

Example 92 with ASN1InputStream

use of org.bouncycastle.asn1.ASN1InputStream in project Resurrection_packages_apps_Settings by ResurrectionRemix.

the class CredentialStorage method isHardwareBackedKey.

private boolean isHardwareBackedKey(byte[] keyData) {
    try {
        ASN1InputStream bIn = new ASN1InputStream(new ByteArrayInputStream(keyData));
        PrivateKeyInfo pki = PrivateKeyInfo.getInstance(bIn.readObject());
        String algOid = pki.getAlgorithmId().getAlgorithm().getId();
        String algName = new AlgorithmId(new ObjectIdentifier(algOid)).getName();
        return KeyChain.isBoundKeyAlgorithm(algName);
    } catch (IOException e) {
        Log.e(TAG, "Failed to parse key data");
        return false;
    }
}

Example 93 with ASN1InputStream

use of org.bouncycastle.asn1.ASN1InputStream in project nuls by nuls-io.

the class SM2Utils method decrypt.

public static byte[] decrypt(byte[] privateKey, byte[] encryptedData) throws IOException {
    if (privateKey == null || privateKey.length == 0) {
        return null;
    }
    if (encryptedData == null || encryptedData.length == 0) {
        return null;
    }
    byte[] enc = new byte[encryptedData.length];
    System.arraycopy(encryptedData, 0, enc, 0, encryptedData.length);
    SM2 sm2 = SM2.Instance();
    BigInteger userD = new BigInteger(1, privateKey);
    ByteArrayInputStream bis = new ByteArrayInputStream(enc);
    ASN1InputStream dis = new ASN1InputStream(bis);
    DERObject derObj = dis.readObject();
    ASN1Sequence asn1 = (ASN1Sequence) derObj;
    DERInteger x = (DERInteger) asn1.getObjectAt(0);
    DERInteger y = (DERInteger) asn1.getObjectAt(1);
    ECPoint c1 = sm2.ecc_curve.createPoint(x.getValue(), y.getValue(), true);
    Cipher cipher = new Cipher();
    cipher.initDec(userD, c1);
    DEROctetString data = (DEROctetString) asn1.getObjectAt(3);
    enc = data.getOctets();
    cipher.decrypt(enc);
    byte[] c3 = new byte[32];
    cipher.dofinal(c3);
    return enc;
}

Example 94 with ASN1InputStream

use of org.bouncycastle.asn1.ASN1InputStream in project BiglyBT by BiglySoftware.

the class PrincipalUtil method getIssuerX509Principal.

/**
 * return the issuer of the given CRL as an X509PrincipalObject.
 */
public static X509Principal getIssuerX509Principal(X509CRL crl) throws CRLException {
    try {
        ByteArrayInputStream bIn = new ByteArrayInputStream(crl.getTBSCertList());
        ASN1InputStream aIn = new ASN1InputStream(bIn);
        TBSCertList tbsCertList = new TBSCertList((ASN1Sequence) aIn.readObject());
        return new X509Principal(tbsCertList.getIssuer());
    } catch (IOException e) {
        throw new CRLException(e.toString());
    }
}

Example 95 with ASN1InputStream

use of org.bouncycastle.asn1.ASN1InputStream in project BiglyBT by BiglySoftware.

the class PrincipalUtil method getIssuerX509Principal.

/**
 * return the issuer of the given cert as an X509PrincipalObject.
 */
public static X509Principal getIssuerX509Principal(X509Certificate cert) throws CertificateEncodingException {
    try {
        ByteArrayInputStream bIn = new ByteArrayInputStream(cert.getTBSCertificate());
        ASN1InputStream aIn = new ASN1InputStream(bIn);
        TBSCertificateStructure tbsCert = new TBSCertificateStructure((ASN1Sequence) aIn.readObject());
        return new X509Principal(tbsCert.getIssuer());
    } catch (IOException e) {
        throw new CertificateEncodingException(e.toString());
    }
}