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Kotlin conversion: DetachedSignExternal
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2 changed files with 104 additions and 142 deletions
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// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
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//
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// SPDX-License-Identifier: Apache-2.0
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package sop.external.operation;
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import sop.MicAlg;
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import sop.ReadyWithResult;
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import sop.SigningResult;
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import sop.enums.SignAs;
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import sop.exception.SOPGPException;
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import sop.external.ExternalSOP;
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import sop.operation.DetachedSign;
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import javax.annotation.Nonnull;
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import java.io.BufferedReader;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Properties;
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/**
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* Implementation of the {@link DetachedSign} operation using an external SOP binary.
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*/
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public class DetachedSignExternal implements DetachedSign {
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private final ExternalSOP.TempDirProvider tempDirProvider;
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private final List<String> commandList = new ArrayList<>();
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private final List<String> envList;
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private int withKeyPasswordCounter = 0;
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private int keyCounter = 0;
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public DetachedSignExternal(String binary, Properties properties, ExternalSOP.TempDirProvider tempDirProvider) {
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this.tempDirProvider = tempDirProvider;
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commandList.add(binary);
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commandList.add("sign");
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envList = ExternalSOP.propertiesToEnv(properties);
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}
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@Override
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@Nonnull
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public DetachedSign noArmor() {
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commandList.add("--no-armor");
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return this;
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}
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@Override
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@Nonnull
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public DetachedSign key(@Nonnull InputStream key) throws SOPGPException.KeyCannotSign, SOPGPException.BadData, SOPGPException.UnsupportedAsymmetricAlgo, IOException {
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String envVar = "KEY_" + keyCounter++;
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commandList.add("@ENV:" + envVar);
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envList.add(envVar + "=" + ExternalSOP.readString(key));
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return this;
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}
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@Override
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@Nonnull
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public DetachedSign withKeyPassword(@Nonnull byte[] password) throws SOPGPException.UnsupportedOption, SOPGPException.PasswordNotHumanReadable {
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String envVar = "WITH_KEY_PASSWORD_" + withKeyPasswordCounter++;
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commandList.add("--with-key-password=@ENV:" + envVar);
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envList.add(envVar + "=" + new String(password));
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return this;
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}
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@Override
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@Nonnull
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public DetachedSign mode(@Nonnull SignAs mode) throws SOPGPException.UnsupportedOption {
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commandList.add("--as=" + mode);
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return this;
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}
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@Override
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@Nonnull
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public ReadyWithResult<SigningResult> data(@Nonnull InputStream data)
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throws IOException, SOPGPException.KeyIsProtected, SOPGPException.ExpectedText {
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File tempDir = tempDirProvider.provideTempDirectory();
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File micAlgOut = new File(tempDir, "micAlgOut");
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micAlgOut.delete();
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commandList.add("--micalg-out=" + micAlgOut.getAbsolutePath());
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String[] command = commandList.toArray(new String[0]);
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String[] env = envList.toArray(new String[0]);
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try {
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Process process = Runtime.getRuntime().exec(command, env);
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OutputStream processOut = process.getOutputStream();
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InputStream processIn = process.getInputStream();
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return new ReadyWithResult<SigningResult>() {
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@Override
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public SigningResult writeTo(@Nonnull OutputStream outputStream) throws IOException {
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byte[] buf = new byte[4096];
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int r;
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while ((r = data.read(buf)) > 0) {
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processOut.write(buf, 0, r);
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}
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data.close();
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try {
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processOut.close();
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} catch (IOException e) {
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// Ignore Stream closed
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if (!"Stream closed".equals(e.getMessage())) {
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throw e;
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}
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}
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while ((r = processIn.read(buf)) > 0) {
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outputStream.write(buf, 0 , r);
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}
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processIn.close();
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outputStream.close();
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ExternalSOP.finish(process);
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SigningResult.Builder builder = SigningResult.builder();
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if (micAlgOut.exists()) {
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BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(micAlgOut)));
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String line = reader.readLine();
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if (line != null && !line.trim().isEmpty()) {
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MicAlg micAlg = new MicAlg(line.trim());
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builder.setMicAlg(micAlg);
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}
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reader.close();
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micAlgOut.delete();
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}
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return builder.build();
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}
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};
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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}
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104
external-sop/src/main/kotlin/sop/external/operation/DetachedSignExternal.kt
vendored
Normal file
104
external-sop/src/main/kotlin/sop/external/operation/DetachedSignExternal.kt
vendored
Normal file
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@ -0,0 +1,104 @@
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// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
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//
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// SPDX-License-Identifier: Apache-2.0
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package sop.external.operation
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import java.io.*
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import java.util.*
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import sop.MicAlg
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import sop.ReadyWithResult
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import sop.SigningResult
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import sop.SigningResult.Companion.builder
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import sop.enums.SignAs
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import sop.external.ExternalSOP
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import sop.external.ExternalSOP.Companion.finish
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import sop.operation.DetachedSign
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/** Implementation of the [DetachedSign] operation using an external SOP binary. */
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class DetachedSignExternal(
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binary: String,
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environment: Properties,
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private val tempDirProvider: ExternalSOP.TempDirProvider
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) : DetachedSign {
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private val commandList = mutableListOf(binary, "sign")
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private val envList = ExternalSOP.propertiesToEnv(environment).toMutableList()
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private var argCounter = 0
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override fun mode(mode: SignAs): DetachedSign = apply { commandList.add("--as=$mode") }
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override fun data(data: InputStream): ReadyWithResult<SigningResult> {
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val tempDir = tempDirProvider.provideTempDirectory()
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val micAlgOut = File(tempDir, "micAlgOut")
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micAlgOut.delete()
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commandList.add("--micalg-out=${micAlgOut.absolutePath}")
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try {
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val process =
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Runtime.getRuntime().exec(commandList.toTypedArray(), envList.toTypedArray())
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val processOut = process.outputStream
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val processIn = process.inputStream
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return object : ReadyWithResult<SigningResult>() {
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override fun writeTo(outputStream: OutputStream): SigningResult {
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val buf = ByteArray(4096)
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var r: Int
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while (data.read(buf).also { r = it } > 0) {
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processOut.write(buf, 0, r)
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}
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data.close()
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try {
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processOut.close()
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} catch (e: IOException) {
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// Ignore Stream closed
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if ("Stream closed" != e.message) {
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throw e
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}
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}
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while (processIn.read(buf).also { r = it } > 0) {
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outputStream.write(buf, 0, r)
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}
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processIn.close()
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outputStream.close()
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finish(process)
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val builder = builder()
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if (micAlgOut.exists()) {
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val reader = BufferedReader(InputStreamReader(FileInputStream(micAlgOut)))
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val line = reader.readLine()
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if (line != null && line.isNotBlank()) {
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val micAlg = MicAlg(line.trim())
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builder.setMicAlg(micAlg)
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}
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reader.close()
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micAlgOut.delete()
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}
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return builder.build()
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}
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}
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} catch (e: IOException) {
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throw RuntimeException(e)
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}
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}
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override fun noArmor(): DetachedSign = apply { commandList.add("--no-armor") }
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override fun key(key: InputStream): DetachedSign = apply {
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commandList.add("@ENV:KEY_$argCounter")
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envList.add("KEY_$argCounter=${ExternalSOP.readString(key)}")
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argCounter += 1
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}
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override fun withKeyPassword(password: ByteArray): DetachedSign = apply {
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commandList.add("--with-key-password=@ENV:WITH_KEY_PASSWORD_$argCounter")
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envList.add("WITH_KEY_PASSWORD_$argCounter=${String(password)}")
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argCounter += 1
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}
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}
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