Examples with Dsa io.churchkey.dsa.Dsa used on opensource projects

Example 1 with Dsa

use of io.churchkey.dsa.Dsa in project churchkey by tomitribe.

the class JwkParser method asDsaKey.

private Key asDsaKey(final JsonObject jsonObject) {
    final Jwk jwk = new Jwk(jsonObject);
    final BigInteger p = jwk.getBigInteger("p");
    final BigInteger q = jwk.getBigInteger("q");
    final BigInteger g = jwk.getBigInteger("g");
    final BigInteger x = jwk.getBigInteger("x");
    final BigInteger y = jwk.getBigInteger("y");
    final List<String> missing = new ArrayList<>();
    if (p == null)
        missing.add("p");
    if (q == null)
        missing.add("q");
    if (g == null)
        missing.add("g");
    if (missing.size() != 0) {
        throw new InvalidJwkKeySpecException("DSA", missing);
    }
    if (x != null) {
        final Dsa.Private build = Dsa.Private.builder().p(p).q(q).g(g).x(x).build();
        final DSAPrivateKey privateKey = build.toKey();
        final DSAPublicKey publicKey = build.toPublic().toKey();
        final Map<String, String> attributes = getAttributes(jsonObject, "kty", "p", "q", "q", "x", "y");
        return new Key(privateKey, publicKey, Key.Type.PRIVATE, Key.Algorithm.DSA, Key.Format.JWK, attributes);
    }
    if (y != null) {
        final DSAPublicKey publicKey = Dsa.Public.builder().p(p).q(q).g(g).y(y).build().toKey();
        final Map<String, String> attributes = getAttributes(jsonObject, "kty", "p", "q", "q", "x", "y");
        return new Key(publicKey, Key.Type.PUBLIC, Key.Algorithm.DSA, Key.Format.JWK, attributes);
    }
    throw new InvalidJwkKeySpecException("DSA", "x", "y");
}

Example 2 with Dsa

use of io.churchkey.dsa.Dsa in project churchkey by tomitribe.

the class BeginPrivateKey method decodeDsaKey.

private static Key decodeDsaKey(final byte[] bytes) throws IOException {
    final Dsa.Private.Builder dsa = Dsa.Private.builder();
    final DerParser d1 = new DerParser(bytes);
    final Asn1Object d1o1 = d1.readObject().assertType(Asn1Type.SEQUENCE);
    {
        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 Asn1Object d3o2 = d3.readObject().assertType(Asn1Type.SEQUENCE);
            {
                final DerParser d4 = new DerParser(d3o2.getValue());
                dsa.p(d4.readBigInteger());
                dsa.q(d4.readBigInteger());
                dsa.g(d4.readBigInteger());
            }
        }
        final Asn1Object d2o3 = d2.readObject().assertType(Asn1Type.OCTET_STRING);
        {
            final DerParser d3 = new DerParser(d2o3.getValue());
            dsa.x(d3.readBigInteger());
            final Dsa.Private build = dsa.build();
            final DSAPrivateKey privateKey = build.toKey();
            final DSAPublicKey publicKey = build.toPublic().toKey();
            return new Key(privateKey, publicKey, Key.Type.PRIVATE, DSA, Key.Format.PEM);
        }
    }
}