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Kotlin conversion: ProducerOptions
This commit is contained in:
parent
5441993baf
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GPG key ID:
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2 changed files with 291 additions and 355 deletions
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// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
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//
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// SPDX-License-Identifier: Apache-2.0
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package org.pgpainless.encryption_signing;
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import java.util.Date;
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import javax.annotation.Nonnull;
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import javax.annotation.Nullable;
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import org.bouncycastle.openpgp.PGPLiteralData;
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import org.pgpainless.PGPainless;
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import org.pgpainless.algorithm.CompressionAlgorithm;
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import org.pgpainless.algorithm.StreamEncoding;
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public final class ProducerOptions {
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private final EncryptionOptions encryptionOptions;
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private final SigningOptions signingOptions;
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private String fileName = "";
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private Date modificationDate = PGPLiteralData.NOW;
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private StreamEncoding encodingField = StreamEncoding.BINARY;
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private boolean applyCRLFEncoding = false;
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private boolean cleartextSigned = false;
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private boolean hideArmorHeaders = false;
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private CompressionAlgorithm compressionAlgorithmOverride = PGPainless.getPolicy().getCompressionAlgorithmPolicy()
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.defaultCompressionAlgorithm();
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private boolean asciiArmor = true;
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private String comment = null;
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private String version = null;
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private ProducerOptions(EncryptionOptions encryptionOptions, SigningOptions signingOptions) {
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this.encryptionOptions = encryptionOptions;
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this.signingOptions = signingOptions;
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}
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/**
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* Sign and encrypt some data.
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*
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* @param encryptionOptions encryption options
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* @param signingOptions signing options
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* @return builder
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*/
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public static ProducerOptions signAndEncrypt(EncryptionOptions encryptionOptions,
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SigningOptions signingOptions) {
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throwIfNull(encryptionOptions);
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throwIfNull(signingOptions);
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return new ProducerOptions(encryptionOptions, signingOptions);
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}
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/**
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* Sign some data without encryption.
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*
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* @param signingOptions signing options
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* @return builder
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*/
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public static ProducerOptions sign(SigningOptions signingOptions) {
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throwIfNull(signingOptions);
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return new ProducerOptions(null, signingOptions);
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}
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/**
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* Encrypt some data without signing.
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*
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* @param encryptionOptions encryption options
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* @return builder
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*/
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public static ProducerOptions encrypt(EncryptionOptions encryptionOptions) {
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throwIfNull(encryptionOptions);
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return new ProducerOptions(encryptionOptions, null);
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}
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/**
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* Only wrap the data in an OpenPGP packet.
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* No encryption or signing will be applied.
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*
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* @return builder
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*/
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public static ProducerOptions noEncryptionNoSigning() {
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return new ProducerOptions(null, null);
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}
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private static void throwIfNull(EncryptionOptions encryptionOptions) {
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if (encryptionOptions == null) {
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throw new NullPointerException("EncryptionOptions cannot be null.");
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}
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}
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private static void throwIfNull(SigningOptions signingOptions) {
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if (signingOptions == null) {
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throw new NullPointerException("SigningOptions cannot be null.");
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}
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}
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/**
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* Specify, whether the result of the encryption/signing operation shall be ascii armored.
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* The default value is true.
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*
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* @param asciiArmor ascii armor
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* @return builder
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*/
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public ProducerOptions setAsciiArmor(boolean asciiArmor) {
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if (cleartextSigned && !asciiArmor) {
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throw new IllegalArgumentException("Cleartext signing is enabled. Cannot disable ASCII armoring.");
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}
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this.asciiArmor = asciiArmor;
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return this;
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}
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/**
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* Return true if the output of the encryption/signing operation shall be ascii armored.
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*
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* @return ascii armored
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*/
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public boolean isAsciiArmor() {
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return asciiArmor;
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}
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/**
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* Set the comment header in ASCII armored output.
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* The default value is null, which means no comment header is added.
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* Multiline comments are possible using '\\n'.
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* <br>
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* Note: If a default header comment is set using {@link org.pgpainless.util.ArmoredOutputStreamFactory#setComment(String)},
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* then both comments will be written to the produced ASCII armor.
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*
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* @param comment comment header text
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* @return builder
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*/
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public ProducerOptions setComment(String comment) {
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this.comment = comment;
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return this;
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}
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/**
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* Set the version header in ASCII armored output.
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* The default value is null, which means no version header is added.
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* <br>
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* Note: If the value is non-null, then this method overrides the default version header set using
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* {@link org.pgpainless.util.ArmoredOutputStreamFactory#setVersionInfo(String)}.
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*
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* @param version version header, or null for no version info.
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* @return builder
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*/
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public ProducerOptions setVersion(String version) {
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this.version = version;
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return this;
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}
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/**
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* Return comment set for header in ascii armored output.
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*
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* @return comment
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*/
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public String getComment() {
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return comment;
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}
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/**
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* Return the version info header in ascii armored output.
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*
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* @return version info
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*/
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public String getVersion() {
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return version;
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}
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/**
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* Return whether a comment was set (!= null).
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*
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* @return true if commend is set
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*/
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public boolean hasComment() {
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return comment != null;
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}
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/**
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* Return whether a version header was set (!= null).
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*
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* @return true if version header is set
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*/
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public boolean hasVersion() {
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return version != null;
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}
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public ProducerOptions setCleartextSigned() {
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if (signingOptions == null) {
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throw new IllegalArgumentException("Signing Options cannot be null if cleartext signing is enabled.");
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}
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if (encryptionOptions != null) {
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throw new IllegalArgumentException("Cannot encode encrypted message as Cleartext Signed.");
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}
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for (SigningOptions.SigningMethod method : signingOptions.getSigningMethods().values()) {
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if (!method.isDetached()) {
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throw new IllegalArgumentException("For cleartext signed message, all signatures must be added as detached signatures.");
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}
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}
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cleartextSigned = true;
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asciiArmor = true;
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compressionAlgorithmOverride = CompressionAlgorithm.UNCOMPRESSED;
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return this;
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}
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public boolean isCleartextSigned() {
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return cleartextSigned;
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}
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/**
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* Set the name of the encrypted file.
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* Note: This option cannot be used simultaneously with {@link #setForYourEyesOnly()}.
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*
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* @param fileName name of the encrypted file
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* @return this
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*/
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public ProducerOptions setFileName(@Nonnull String fileName) {
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this.fileName = fileName;
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return this;
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}
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/**
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* Return the encrypted files name.
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*
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* @return file name
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*/
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public String getFileName() {
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return fileName;
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}
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/**
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* Mark the encrypted message as for-your-eyes-only by setting a special file name.
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* Note: Therefore this method cannot be used simultaneously with {@link #setFileName(String)}.
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*
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* @return this
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* @deprecated deprecated since at least crypto-refresh-05. It is not recommended using this special filename in
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* newly generated literal data packets
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*/
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@Deprecated
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public ProducerOptions setForYourEyesOnly() {
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this.fileName = PGPLiteralData.CONSOLE;
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return this;
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}
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/**
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* Set the modification date of the encrypted file.
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*
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* @param modificationDate Modification date of the encrypted file.
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* @return this
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*/
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public ProducerOptions setModificationDate(@Nonnull Date modificationDate) {
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this.modificationDate = modificationDate;
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return this;
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}
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/**
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* Return the modification date of the encrypted file.
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*
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* @return modification date
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*/
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public Date getModificationDate() {
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return modificationDate;
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}
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/**
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* Set format metadata field of the literal data packet.
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* Defaults to {@link StreamEncoding#BINARY}.
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* <br>
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* This does not change the encoding of the wrapped data itself.
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* To apply CR/LF encoding to your input data before processing, use {@link #applyCRLFEncoding()} instead.
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*
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* @see <a href="https://datatracker.ietf.org/doc/html/rfc4880#section-5.9">RFC4880 §5.9. Literal Data Packet</a>
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*
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* @param encoding encoding
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* @return this
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*
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* @deprecated options other than the default value of {@link StreamEncoding#BINARY} are discouraged.
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*/
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@Deprecated
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public ProducerOptions setEncoding(@Nonnull StreamEncoding encoding) {
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this.encodingField = encoding;
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return this;
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}
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public StreamEncoding getEncoding() {
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return encodingField;
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}
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/**
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* Apply special encoding of line endings to the input data.
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* By default, this is disabled, which means that the data is not altered.
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* <br>
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* Enabling it will change the line endings to CR/LF.
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* Note: The encoding will not be reversed when decrypting, so applying CR/LF encoding will result in
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* the identity "decrypt(encrypt(data)) == data == verify(sign(data))".
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*
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* @return this
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*/
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public ProducerOptions applyCRLFEncoding() {
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this.applyCRLFEncoding = true;
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return this;
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}
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/**
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* Return the input encoding that will be applied before signing / encryption.
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*
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* @return input encoding
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*/
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public boolean isApplyCRLFEncoding() {
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return applyCRLFEncoding;
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}
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/**
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* Override which compression algorithm shall be used.
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*
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* @param compressionAlgorithm compression algorithm override
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* @return builder
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*/
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public ProducerOptions overrideCompressionAlgorithm(CompressionAlgorithm compressionAlgorithm) {
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if (compressionAlgorithm == null) {
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throw new NullPointerException("Compression algorithm cannot be null.");
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}
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this.compressionAlgorithmOverride = compressionAlgorithm;
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return this;
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}
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public CompressionAlgorithm getCompressionAlgorithmOverride() {
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return compressionAlgorithmOverride;
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}
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public @Nullable EncryptionOptions getEncryptionOptions() {
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return encryptionOptions;
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}
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public @Nullable SigningOptions getSigningOptions() {
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return signingOptions;
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}
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public boolean isHideArmorHeaders() {
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return hideArmorHeaders;
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}
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/**
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* If set to <pre>true</pre>, armor headers like version or comments will be omitted from armored output.
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* By default, armor headers are not hidden.
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* Note: If comments are added via {@link #setComment(String)}, those are not omitted, even if
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* {@link #hideArmorHeaders} is set to <pre>true</pre>.
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*
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* @param hideArmorHeaders true or false
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* @return this
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*/
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public ProducerOptions setHideArmorHeaders(boolean hideArmorHeaders) {
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this.hideArmorHeaders = hideArmorHeaders;
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return this;
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}
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}
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@ -0,0 +1,291 @@
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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 org.pgpainless.encryption_signing
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import org.bouncycastle.openpgp.PGPLiteralData
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import org.pgpainless.PGPainless
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import org.pgpainless.algorithm.CompressionAlgorithm
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import org.pgpainless.algorithm.StreamEncoding
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import java.util.*
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class ProducerOptions private constructor(
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val encryptionOptions: EncryptionOptions?,
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val signingOptions: SigningOptions?) {
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private var _fileName: String = ""
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private var _modificationDate: Date = PGPLiteralData.NOW
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private var encodingField: StreamEncoding = StreamEncoding.BINARY
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private var applyCRLFEncoding = false
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private var cleartextSigned = false
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private var _hideArmorHeaders = false
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private var _compressionAlgorithmOverride: CompressionAlgorithm = PGPainless.getPolicy().compressionAlgorithmPolicy.defaultCompressionAlgorithm
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private var asciiArmor = true
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private var _comment: String? = null
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private var _version: String? = null
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/**
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* Specify, whether the result of the encryption/signing operation shall be ascii armored.
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* The default value is true.
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*
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* @param asciiArmor ascii armor
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* @return builder
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*/
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fun setAsciiArmor(asciiArmor: Boolean) = apply {
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require(!(cleartextSigned && !asciiArmor)) {
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"Cleartext signing is enabled. Cannot disable ASCII armoring."
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}
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this.asciiArmor = asciiArmor
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}
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/**
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* Return true if the output of the encryption/signing operation shall be ascii armored.
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*
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* @return ascii armored
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*/
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val isAsciiArmor: Boolean
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get() = asciiArmor
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/**
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* Set the comment header in ASCII armored output.
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* The default value is null, which means no comment header is added.
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* Multiline comments are possible using '\\n'.
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* <br>
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* Note: If a default header comment is set using [org.pgpainless.util.ArmoredOutputStreamFactory.setComment],
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* then both comments will be written to the produced ASCII armor.
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*
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* @param comment comment header text
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* @return builder
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*/
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fun setComment(comment: String?) = apply {
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_comment = comment
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}
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/**
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* Return comment set for header in ascii armored output.
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*
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* @return comment
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*/
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val comment: String?
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get() = _comment
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/**
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* Return whether a comment was set (!= null).
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*
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* @return true if commend is set
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*/
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fun hasComment() = _comment != null
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/**
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* Set the version header in ASCII armored output.
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* The default value is null, which means no version header is added.
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* <br>
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* Note: If the value is non-null, then this method overrides the default version header set using
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* [org.pgpainless.util.ArmoredOutputStreamFactory.setVersionInfo].
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*
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* @param version version header, or null for no version info.
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* @return builder
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*/
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fun setVersion(version: String?) = apply {
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_version = version
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}
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/**
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* Return the version info header in ascii armored output.
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*
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* @return version info
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*/
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val version: String?
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get() = _version
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/**
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* Return whether a version header was set (!= null).
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*
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* @return true if version header is set
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*/
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fun hasVersion() = version != null
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fun setCleartextSigned() = apply {
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require(signingOptions != null) {
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"Signing Options cannot be null if cleartext signing is enabled."
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}
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require(encryptionOptions == null) {
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"Cannot encode encrypted message as Cleartext Signed."
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}
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require(signingOptions.signingMethods.values.all { it.isDetached }) {
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"For cleartext signed messages, all signatures must be added as detached signatures."
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}
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cleartextSigned = true
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asciiArmor = true
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_compressionAlgorithmOverride = CompressionAlgorithm.UNCOMPRESSED
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}
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val isCleartextSigned: Boolean
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get() = cleartextSigned
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/**
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* Set the name of the encrypted file.
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* Note: This option cannot be used simultaneously with [setForYourEyesOnly].
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*
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* @param fileName name of the encrypted file
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* @return this
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*/
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fun setFileName(fileName: String) = apply {
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_fileName = fileName
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}
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/**
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* Return the encrypted files name.
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*
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* @return file name
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*/
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val fileName: String
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get() = _fileName
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/**
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* Mark the encrypted message as for-your-eyes-only by setting a special file name.
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* Note: Therefore this method cannot be used simultaneously with [setFileName].
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*
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* @return this
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* @deprecated deprecated since at least crypto-refresh-05. It is not recommended using this special filename in
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* newly generated literal data packets
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*/
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@Deprecated("Signaling using special file name is discouraged.")
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fun setForYourEyesOnly() = apply {
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_fileName = PGPLiteralData.CONSOLE
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}
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/**
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* Set the modification date of the encrypted file.
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*
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* @param modificationDate Modification date of the encrypted file.
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* @return this
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*/
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fun setModificationDate(modificationDate: Date) = apply {
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_modificationDate = modificationDate
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}
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/**
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* Return the modification date of the encrypted file.
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*
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* @return modification date
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*/
|
||||
val modificationDate: Date
|
||||
get() = _modificationDate
|
||||
|
||||
/**
|
||||
* Set format metadata field of the literal data packet.
|
||||
* Defaults to [StreamEncoding.BINARY].
|
||||
* <br>
|
||||
* This does not change the encoding of the wrapped data itself.
|
||||
* To apply CR/LF encoding to your input data before processing, use [applyCRLFEncoding] instead.
|
||||
*
|
||||
* @see <a href="https://datatracker.ietf.org/doc/html/rfc4880#section-5.9">RFC4880 §5.9. Literal Data Packet</a>
|
||||
*
|
||||
* @param encoding encoding
|
||||
* @return this
|
||||
*
|
||||
* @deprecated options other than the default value of {@link StreamEncoding#BINARY} are discouraged.
|
||||
*/
|
||||
@Deprecated("Options other than BINARY are discouraged.")
|
||||
fun setEncoding(encoding: StreamEncoding) = apply {
|
||||
encodingField = encoding
|
||||
}
|
||||
|
||||
val encoding: StreamEncoding
|
||||
get() = encodingField
|
||||
|
||||
/**
|
||||
* Apply special encoding of line endings to the input data.
|
||||
* By default, this is disabled, which means that the data is not altered.
|
||||
* <br>
|
||||
* Enabling it will change the line endings to CR/LF.
|
||||
* Note: The encoding will not be reversed when decrypting, so applying CR/LF encoding will result in
|
||||
* the identity "decrypt(encrypt(data)) == data == verify(sign(data))".
|
||||
*
|
||||
* @return this
|
||||
*/
|
||||
fun applyCRLFEncoding() = apply {
|
||||
applyCRLFEncoding = true
|
||||
}
|
||||
|
||||
/**
|
||||
* Return the input encoding that will be applied before signing / encryption.
|
||||
*
|
||||
* @return input encoding
|
||||
*/
|
||||
val isApplyCRLFEncoding: Boolean
|
||||
get() = applyCRLFEncoding
|
||||
|
||||
/**
|
||||
* Override which compression algorithm shall be used.
|
||||
*
|
||||
* @param compressionAlgorithm compression algorithm override
|
||||
* @return builder
|
||||
*/
|
||||
fun overrideCompressionAlgorithm(compressionAlgorithm: CompressionAlgorithm) = apply {
|
||||
_compressionAlgorithmOverride = compressionAlgorithm
|
||||
}
|
||||
|
||||
val compressionAlgorithmOverride: CompressionAlgorithm
|
||||
get() = _compressionAlgorithmOverride
|
||||
|
||||
val isHideArmorHeaders: Boolean
|
||||
get() = _hideArmorHeaders
|
||||
|
||||
/**
|
||||
* If set to `true`, armor headers like version or comments will be omitted from armored output.
|
||||
* By default, armor headers are not hidden.
|
||||
* Note: If comments are added via [setComment], those are not omitted, even if
|
||||
* [hideArmorHeaders] is set to `true`.
|
||||
*
|
||||
* @param hideArmorHeaders true or false
|
||||
* @return this
|
||||
*/
|
||||
fun setHideArmorHeaders(hideArmorHeaders: Boolean) = apply {
|
||||
_hideArmorHeaders = hideArmorHeaders
|
||||
}
|
||||
|
||||
companion object {
|
||||
/**
|
||||
* Sign and encrypt some data.
|
||||
*
|
||||
* @param encryptionOptions encryption options
|
||||
* @param signingOptions signing options
|
||||
* @return builder
|
||||
*/
|
||||
@JvmStatic
|
||||
fun signAndEncrypt(encryptionOptions: EncryptionOptions, signingOptions: SigningOptions) =
|
||||
ProducerOptions(encryptionOptions, signingOptions)
|
||||
|
||||
/**
|
||||
* Sign some data without encryption.
|
||||
*
|
||||
* @param signingOptions signing options
|
||||
* @return builder
|
||||
*/
|
||||
@JvmStatic
|
||||
fun sign(signingOptions: SigningOptions) = ProducerOptions(null, signingOptions)
|
||||
|
||||
/**
|
||||
* Encrypt some data without signing.
|
||||
*
|
||||
* @param encryptionOptions encryption options
|
||||
* @return builder
|
||||
*/
|
||||
@JvmStatic
|
||||
fun encrypt(encryptionOptions: EncryptionOptions) = ProducerOptions(encryptionOptions, null)
|
||||
|
||||
/**
|
||||
* Only wrap the data in an OpenPGP packet.
|
||||
* No encryption or signing will be applied.
|
||||
*
|
||||
* @return builder
|
||||
*/
|
||||
@JvmStatic
|
||||
fun noEncryptionNoSigning() = ProducerOptions(null, null)
|
||||
}
|
||||
}
|
||||
Loading…
Reference in a new issue