Examples with DerParser io.churchkey.asn1.DerParser used on opensource projects

Example 21 with DerParser

use of io.churchkey.asn1.DerParser in project churchkey by tomitribe.

the class BeginRsaPrivateKey method decode.

public static Key decode(final byte[] bytes) {
    try {
        final DerParser parser = new DerParser(bytes);
        final Asn1Object sequence = parser.readObject();
        if (sequence.getType() != Asn1Type.SEQUENCE) {
            throw new IllegalArgumentException("Invalid DER: not a sequence");
        }
        // Parse inside the sequence
        final DerParser p = sequence.createParser();
        // Skip version
        p.readObject();
        final Rsa.Private build = Rsa.Private.builder().modulus(p.readObject().asInteger()).publicExponent(p.readObject().asInteger()).privateExponent(p.readObject().asInteger()).primeP(p.readObject().asInteger()).primeQ(p.readObject().asInteger()).primeExponentP(p.readObject().asInteger()).primeExponentQ(p.readObject().asInteger()).crtCoefficient(p.readObject().asInteger()).build();
        final RSAPrivateCrtKey privateKey = build.toKey();
        final RSAPublicKey publicKey = build.toPublic().toKey();
        return new Key(privateKey, publicKey, Key.Type.PRIVATE, Key.Algorithm.RSA, Key.Format.PEM);
    } catch (IOException e) {
        throw new UncheckedIOException(e);
    }
}

Example 22 with DerParser

use of io.churchkey.asn1.DerParser in project churchkey by tomitribe.

the class EcCurveParams method parseSequence.

public static ECParameterSpec parseSequence(final Asn1Object d1o1) throws IOException {
    final ECField field;
    final EllipticCurve ellipticCurve;
    final DerParser d2 = new DerParser(d1o1.getValue());
    final Asn1Object d2o1 = d2.readObject().assertType(Asn1Type.INTEGER);
    final Asn1Object d2o2 = d2.readObject().assertType(Asn1Type.SEQUENCE);
    {
        final DerParser d3 = new DerParser(d2o2.getValue());
        final Asn1Object d3o1 = d3.readObject().assertType(Asn1Type.OBJECT_IDENTIFIER);
        final Oid oid = d3o1.asOID();
        if (primeField.equals(oid)) {
            final Asn1Object d3o2 = d3.readObject().assertType(Asn1Type.INTEGER);
            field = new ECFieldFp(d3o2.toInteger());
        } else if (characteristicTwoField.equals(oid)) {
            final Asn1Object d3o2 = d3.readObject().assertType(Asn1Type.SEQUENCE);
            {
                final DerParser d4 = new DerParser(d3o2.getValue());
                final Asn1Object d4o1 = d4.readObject().assertType(Asn1Type.INTEGER);
                final Asn1Object d4o2 = d4.readObject().assertType(Asn1Type.OBJECT_IDENTIFIER);
                final Oid basis = d4o2.asOID();
                if (ppBasis.equals(basis)) {
                    final Asn1Object d4o3 = d4.readObject().assertType(Asn1Type.SEQUENCE);
                    {
                        final DerParser d5 = new DerParser(d4o3.getValue());
                        final Asn1Object d5o1 = d5.readObject().assertType(Asn1Type.INTEGER);
                        final Asn1Object d5o2 = d5.readObject().assertType(Asn1Type.INTEGER);
                        final Asn1Object d5o3 = d5.readObject().assertType(Asn1Type.INTEGER);
                        field = new ECFieldF2m(d4o1.asInteger().intValue(), new int[] { d5o3.asInteger().intValue(), d5o2.asInteger().intValue(), d5o1.asInteger().intValue() });
                    }
                } else if (tpBasis.equals(basis)) {
                    final Asn1Object d5o1 = d4.readObject().assertType(Asn1Type.INTEGER);
                    field = new ECFieldF2m(d4o1.asInteger().intValue(), new int[] { d5o1.asInteger().intValue() });
                } else {
                    throw new UnsupportedOperationException("Unsupported characteristic-two-basis " + basis);
                }
            }
        } else {
            throw new UnsupportedOperationException(oid.toString());
        }
    }
    final Asn1Object d2o3 = d2.readObject().assertType(Asn1Type.SEQUENCE);
    {
        final DerParser d3 = new DerParser(d2o3.getValue());
        final Asn1Object d3o1 = d3.readObject().assertType(Asn1Type.OCTET_STRING);
        final Asn1Object d3o2 = d3.readObject().assertType(Asn1Type.OCTET_STRING);
        final Asn1Object d3o3 = d3.readObject();
        final BigInteger a = d3o1.toInteger();
        final BigInteger b = d3o2.toInteger();
        if (d3o3 == null) {
            ellipticCurve = new EllipticCurve(field, a, b);
        } else {
            ellipticCurve = new EllipticCurve(field, a, b, d3o3.getPureValueBytes());
        }
    }
    final Asn1Object d2o4 = d2.readObject().assertType(Asn1Type.OCTET_STRING);
    final Asn1Object d2o5 = d2.readObject().assertType(Asn1Type.INTEGER);
    final Asn1Object d2o6 = d2.readObject().assertType(Asn1Type.INTEGER);
    final ECPoint point = EcPoints.fromBytes(d2o4.getPureValueBytes());
    return new ECParameterSpec(ellipticCurve, point, d2o5.toInteger(), d2o6.toInteger().intValue());
}

Example 23 with DerParser

use of io.churchkey.asn1.DerParser in project churchkey by tomitribe.

the class EcCurveParams method parseOid.

public static Oid parseOid(final byte[] data) throws IOException {
    final DerParser d1 = new DerParser(data);
    final Asn1Object d1o1 = d1.readObject().assertType(Asn1Type.OBJECT_IDENTIFIER);
    return d1o1.asOID();
}

Example 24 with DerParser

use of io.churchkey.asn1.DerParser in project ldaptive by vt-middleware.

the class DnParser method convertDnToAttributes.

/**
 * Parses the supplied DN and converts each RDN into a {@link LdapAttribute}.
 *
 * @param  dn  to parse
 *
 * @return  list of ldap attributes for each RDN
 */
public static List<LdapAttribute> convertDnToAttributes(final String dn) {
    LOGGER.trace("parsing DN: {}", dn);
    final List<LdapAttribute> attributes = new ArrayList<>();
    if (dn.isEmpty()) {
        return attributes;
    }
    int pos = 0;
    while (pos < dn.length()) {
        final int endAttrNamePos = readToChar(dn, new char[] { '=' }, pos);
        final String attrName = dn.substring(pos, endAttrNamePos);
        LOGGER.trace("read attribute name: [{}]", attrName);
        pos = endAttrNamePos;
        // error if char isn't an '='
        if (pos >= dn.length() || dn.charAt(pos++) != '=') {
            throw new IllegalArgumentException("Invalid DN: " + dn);
        }
        final int endAttrValuePos = readToChar(dn, new char[] { '+', ',' }, pos);
        String attrValue = dn.substring(pos, endAttrValuePos);
        LOGGER.trace("read attribute value: [{}]", attrValue);
        attrValue = attrValue.trim();
        // error if attribute value is empty
        if (attrValue.isEmpty()) {
            throw new IllegalArgumentException("Invalid DN: " + dn);
        }
        if (attrValue.startsWith("#")) {
            final DERParser parser = new DERParser();
            final OctetStringHandler handler = new OctetStringHandler();
            parser.registerHandler(HEX_PATH, handler);
            final String hexData = attrValue.substring(1);
            parser.parse(new DefaultDERBuffer(decodeHexValue(hexData.toCharArray())));
            attributes.add(new LdapAttribute(attrName.trim(), handler.getDecodedValue()));
        } else {
            attributes.add(new LdapAttribute(attrName.trim(), decodeStringValue(attrValue)));
        }
        pos = endAttrValuePos + 1;
    }
    LOGGER.debug("Parsed DN into: {}", attributes);
    return attributes;
}

Example 25 with DerParser

use of io.churchkey.asn1.DerParser in project ldaptive by vt-middleware.

the class GetStatsControl method decode.

@Override
public void decode(final DERBuffer encoded) {
    final DERParser parser = new DERParser();
    parser.registerHandler(THREAD_COUNT_PATH, new IntegerHandler(this, "threadCount"));
    parser.registerHandler(CALL_TIME_PATH, new IntegerHandler(this, "callTime"));
    parser.registerHandler(ENTRIES_RETURNED_PATH, new IntegerHandler(this, "entriesReturned"));
    parser.registerHandler(ENTRIES_VISITED_PATH, new IntegerHandler(this, "entriesVisited"));
    parser.registerHandler(FILTER_PATH, new StringHandler(this, "filter"));
    parser.registerHandler(INDEX_PATH, new StringHandler(this, "index"));
    parser.registerHandler(PAGES_REFERENCED_PATH, new IntegerHandler(this, "pagesReferenced"));
    parser.registerHandler(PAGES_READ_PATH, new IntegerHandler(this, "pagesRead"));
    parser.registerHandler(PAGES_PREREAD_PATH, new IntegerHandler(this, "pagesPreread"));
    parser.registerHandler(PAGES_DIRTIED_PATH, new IntegerHandler(this, "pagesDirtied"));
    parser.registerHandler(PAGES_REDIRTIED_PATH, new IntegerHandler(this, "pagesRedirtied"));
    parser.registerHandler(LOG_RECORD_COUNT_PATH, new IntegerHandler(this, "logRecordCount"));
    parser.registerHandler(LOG_RECORD_BYTES_PATH, new IntegerHandler(this, "logRecordBytes"));
    parser.parse(encoded);
}