org.apache.james.blob.objectstorage.AESPayloadCodecTest.java Source code

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Here is the source code for org.apache.james.blob.objectstorage.AESPayloadCodecTest.java

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package org.apache.james.blob.objectstorage;

import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;

import java.io.ByteArrayInputStream;
import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;

import org.apache.commons.io.IOUtils;
import org.apache.james.blob.objectstorage.crypto.CryptoConfig;
import org.jclouds.io.Payload;
import org.jclouds.io.Payloads;
import org.jetbrains.annotations.NotNull;
import org.junit.jupiter.api.Test;

import com.google.crypto.tink.subtle.Hex;

class AESPayloadCodecTest implements PayloadCodecContract {
    private static final byte[] ENCRYPTED_BYTES = Hex.decode(
            "28cdfb53c283185598ec7c49c415c6b56e85d3d74af89740270c2d2cd8006e1265a301436d919ed7acfc14586b5bd193e34c744ef1641230457dae3475");

    @Override
    public PayloadCodec codec() {
        return new AESPayloadCodec(
                new CryptoConfig("c603a7327ee3dcbc031d8d34b1096c605feca5e1", "foobar".toCharArray()));
    }

    @Test
    void aesCodecShouldEncryptPayloadContentWhenWriting() throws Exception {
        Payload payload = codec().write(expected());
        byte[] bytes = IOUtils.toByteArray(payload.openStream());
        // authenticated encryption uses a random salt for the authentication
        // header all we can say for sure is that the output is not the same as
        // the input.
        assertThat(bytes).isNotEqualTo(SOME_BYTES);
    }

    @Test
    void aesCodecShouldDecryptPayloadContentWhenReading() throws Exception {
        Payload payload = Payloads.newInputStreamPayload(new ByteArrayInputStream(ENCRYPTED_BYTES));

        InputStream actual = codec().read(payload);

        assertThat(actual).hasSameContentAs(expected());
    }

    @Test
    void aesCodecShouldRaiseExceptionWhenUnderliyingInputStreamFails() throws Exception {
        Payload payload = Payloads
                .newInputStreamPayload(new FilterInputStream(new ByteArrayInputStream(ENCRYPTED_BYTES)) {
                    private int readCount = 0;

                    @Override
                    public int read(@NotNull byte[] b, int off, int len) throws IOException {
                        if (readCount >= ENCRYPTED_BYTES.length / 2) {
                            throw new IOException();
                        } else {
                            readCount += len;
                            return super.read(b, off, len);
                        }
                    }
                });
        int i = ENCRYPTED_BYTES.length / 2;
        byte[] bytes = new byte[i];
        InputStream is = codec().read(payload);
        assertThatThrownBy(() -> is.read(bytes, 0, i)).isInstanceOf(IOException.class);

    }
}