eddsa-api-plugin/src/test/java/net/i2p/crypto/eddsa/EdDSAPublicKeyTest.java at 9563fd8af5547e9c03193404154ad83e50a78758 · jenkinsci/eddsa-api-plugin · GitHub

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/**
 * EdDSA-Java by str4d
 *
 * To the extent possible under law, the person who associated CC0 with
 * EdDSA-Java has waived all copyright and related or neighboring rights
 * to EdDSA-Java.
 *
 * You should have received a copy of the CC0 legalcode along with this
 * work. If not, see <https://creativecommons.org/publicdomain/zero/1.0/>.
 *
 */
package net.i2p.crypto.eddsa;

import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.*;

import java.security.spec.X509EncodedKeySpec;
import net.i2p.crypto.eddsa.spec.EdDSAPublicKeySpec;
import org.junit.jupiter.api.Test;

/**
 * @author str4d
 *
 */
class EdDSAPublicKeyTest {
    /**
     * The example public key MCowBQYDK2VwAyEAGb9ECWmEzf6FQbrBZ9w7lshQhqowtrbLDFw4rXAxZuE=
     * from https://tools.ietf.org/html/draft-ietf-curdle-pkix-04#section-10.1
     */
    static final byte[] TEST_PUBKEY = Utils.hexToBytes(
            "302a300506032b657003210019bf44096984cdfe8541bac167dc3b96c85086aa30b6b6cb0c5c38ad703166e1");

    static final byte[] TEST_PUBKEY_NULL_PARAMS = Utils.hexToBytes(
            "302c300706032b6570050003210019bf44096984cdfe8541bac167dc3b96c85086aa30b6b6cb0c5c38ad703166e1");
    static final byte[] TEST_PUBKEY_OLD = Utils.hexToBytes(
            "302d300806032b65640a010103210019bf44096984cdfe8541bac167dc3b96c85086aa30b6b6cb0c5c38ad703166e1");

    @Test
    void testDecodeAndEncode() throws Exception {
        // Decode
        X509EncodedKeySpec encoded = new X509EncodedKeySpec(TEST_PUBKEY);
        EdDSAPublicKey keyIn = new EdDSAPublicKey(encoded);

        // Encode
        EdDSAPublicKeySpec decoded = new EdDSAPublicKeySpec(keyIn.getA(), keyIn.getParams());
        EdDSAPublicKey keyOut = new EdDSAPublicKey(decoded);

        // Check
        assertThat(keyOut.getEncoded(), is(equalTo(TEST_PUBKEY)));
    }

    @Test
    void testDecodeWithNullAndEncode() throws Exception {
        // Decode
        X509EncodedKeySpec encoded = new X509EncodedKeySpec(TEST_PUBKEY_NULL_PARAMS);
        EdDSAPublicKey keyIn = new EdDSAPublicKey(encoded);

        // Encode
        EdDSAPublicKeySpec decoded = new EdDSAPublicKeySpec(keyIn.getA(), keyIn.getParams());
        EdDSAPublicKey keyOut = new EdDSAPublicKey(decoded);

        // Check
        assertThat(keyOut.getEncoded(), is(equalTo(TEST_PUBKEY)));
    }

    @Test
    void testReEncodeOldEncoding() throws Exception {
        // Decode
        X509EncodedKeySpec encoded = new X509EncodedKeySpec(TEST_PUBKEY_OLD);
        EdDSAPublicKey keyIn = new EdDSAPublicKey(encoded);

        // Encode
        EdDSAPublicKeySpec decoded = new EdDSAPublicKeySpec(keyIn.getA(), keyIn.getParams());
        EdDSAPublicKey keyOut = new EdDSAPublicKey(decoded);

        // Check
        assertThat(keyOut.getEncoded(), is(equalTo(TEST_PUBKEY)));
    }
}