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Kotlin conversion: Decrypt
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2 changed files with 169 additions and 193 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 sop.operation;
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import sop.DecryptionResult;
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import sop.ReadyWithResult;
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import sop.SessionKey;
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import sop.exception.SOPGPException;
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import sop.util.UTF8Util;
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import java.io.ByteArrayInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.Date;
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public interface Decrypt {
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/**
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* Makes the SOP consider signatures before this date invalid.
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*
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* @param timestamp timestamp
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* @return builder instance
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*
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* @throws sop.exception.SOPGPException.UnsupportedOption if this option is not supported
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*/
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Decrypt verifyNotBefore(Date timestamp)
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throws SOPGPException.UnsupportedOption;
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/**
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* Makes the SOP consider signatures after this date invalid.
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*
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* @param timestamp timestamp
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* @return builder instance
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*
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* @throws sop.exception.SOPGPException.UnsupportedOption if this option is not supported
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*/
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Decrypt verifyNotAfter(Date timestamp)
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throws SOPGPException.UnsupportedOption;
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/**
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* Adds one or more verification cert.
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*
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* @param cert input stream containing the cert(s)
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* @return builder instance
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*
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* @throws sop.exception.SOPGPException.BadData if the {@link InputStream} doesn't provide an OpenPGP certificate
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* @throws sop.exception.SOPGPException.UnsupportedAsymmetricAlgo if the cert uses an unsupported asymmetric algorithm
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* @throws IOException in case of an IO error
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*/
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Decrypt verifyWithCert(InputStream cert)
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throws SOPGPException.BadData,
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SOPGPException.UnsupportedAsymmetricAlgo,
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IOException;
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/**
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* Adds one or more verification cert.
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*
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* @param cert byte array containing the cert(s)
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* @return builder instance
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*
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* @throws sop.exception.SOPGPException.BadData if the byte array doesn't contain an OpenPGP certificate
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* @throws sop.exception.SOPGPException.UnsupportedAsymmetricAlgo if the cert uses an unsupported asymmetric algorithm
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* @throws IOException in case of an IO error
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*/
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default Decrypt verifyWithCert(byte[] cert)
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throws SOPGPException.BadData,
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SOPGPException.UnsupportedAsymmetricAlgo,
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IOException {
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return verifyWithCert(new ByteArrayInputStream(cert));
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}
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/**
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* Tries to decrypt with the given session key.
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*
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* @param sessionKey session key
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* @return builder instance
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*
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* @throws sop.exception.SOPGPException.UnsupportedOption if this option is not supported
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*/
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Decrypt withSessionKey(SessionKey sessionKey)
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throws SOPGPException.UnsupportedOption;
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/**
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* Tries to decrypt with the given password.
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*
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* @param password password
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* @return builder instance
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*
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* @throws sop.exception.SOPGPException.PasswordNotHumanReadable if the password is not human-readable
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* @throws sop.exception.SOPGPException.UnsupportedOption if this option is not supported
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*/
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Decrypt withPassword(String password)
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throws SOPGPException.PasswordNotHumanReadable,
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SOPGPException.UnsupportedOption;
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/**
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* Adds one or more decryption key.
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*
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* @param key input stream containing the key(s)
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* @return builder instance
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*
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* @throws sop.exception.SOPGPException.BadData if the {@link InputStream} does not provide an OpenPGP key
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* @throws sop.exception.SOPGPException.UnsupportedAsymmetricAlgo if the key uses an unsupported asymmetric algorithm
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* @throws IOException in case of an IO error
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*/
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Decrypt withKey(InputStream key)
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throws SOPGPException.BadData,
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SOPGPException.UnsupportedAsymmetricAlgo,
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IOException;
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/**
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* Adds one or more decryption key.
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*
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* @param key byte array containing the key(s)
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* @return builder instance
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*
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* @throws sop.exception.SOPGPException.BadData if the byte array does not contain an OpenPGP key
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* @throws sop.exception.SOPGPException.UnsupportedAsymmetricAlgo if the key uses an unsupported asymmetric algorithm
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* @throws IOException in case of an IO error
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*/
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default Decrypt withKey(byte[] key)
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throws SOPGPException.BadData,
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SOPGPException.UnsupportedAsymmetricAlgo,
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IOException {
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return withKey(new ByteArrayInputStream(key));
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}
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/**
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* Provide the decryption password for the secret key.
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*
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* @param password password
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* @return builder instance
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* @throws sop.exception.SOPGPException.UnsupportedOption if the implementation does not support key passwords
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* @throws sop.exception.SOPGPException.PasswordNotHumanReadable if the password is not human-readable
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*/
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default Decrypt withKeyPassword(String password)
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throws SOPGPException.UnsupportedOption,
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SOPGPException.PasswordNotHumanReadable {
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return withKeyPassword(password.getBytes(UTF8Util.UTF8));
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}
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/**
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* Provide the decryption password for the secret key.
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*
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* @param password password
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* @return builder instance
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* @throws sop.exception.SOPGPException.UnsupportedOption if the implementation does not support key passwords
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* @throws sop.exception.SOPGPException.PasswordNotHumanReadable if the password is not human-readable
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*/
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Decrypt withKeyPassword(byte[] password)
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throws SOPGPException.UnsupportedOption,
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SOPGPException.PasswordNotHumanReadable;
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/**
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* Decrypts the given ciphertext, returning verification results and plaintext.
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* @param ciphertext ciphertext
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* @return ready with result
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*
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* @throws sop.exception.SOPGPException.BadData if the {@link InputStream} does not provide an OpenPGP message
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* @throws sop.exception.SOPGPException.MissingArg if an argument required for decryption was not provided
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* @throws sop.exception.SOPGPException.CannotDecrypt in case decryption fails for some reason
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* @throws sop.exception.SOPGPException.KeyIsProtected if the decryption key cannot be unlocked (e.g. missing passphrase)
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* @throws IOException in case of an IO error
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*/
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ReadyWithResult<DecryptionResult> ciphertext(InputStream ciphertext)
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throws SOPGPException.BadData,
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SOPGPException.MissingArg,
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SOPGPException.CannotDecrypt,
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SOPGPException.KeyIsProtected,
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IOException;
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/**
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* Decrypts the given ciphertext, returning verification results and plaintext.
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* @param ciphertext ciphertext
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* @return ready with result
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*
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* @throws sop.exception.SOPGPException.BadData if the byte array does not contain an encrypted OpenPGP message
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* @throws sop.exception.SOPGPException.MissingArg in case of missing decryption method (password or key required)
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* @throws sop.exception.SOPGPException.CannotDecrypt in case decryption fails for some reason
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* @throws sop.exception.SOPGPException.KeyIsProtected if the decryption key cannot be unlocked (e.g. missing passphrase)
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* @throws IOException in case of an IO error
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*/
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default ReadyWithResult<DecryptionResult> ciphertext(byte[] ciphertext)
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throws SOPGPException.BadData,
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SOPGPException.MissingArg,
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SOPGPException.CannotDecrypt,
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SOPGPException.KeyIsProtected,
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IOException {
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return ciphertext(new ByteArrayInputStream(ciphertext));
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}
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}
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169
sop-java/src/main/kotlin/sop/operation/Decrypt.kt
Normal file
169
sop-java/src/main/kotlin/sop/operation/Decrypt.kt
Normal file
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@ -0,0 +1,169 @@
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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.operation
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import java.io.IOException
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import java.io.InputStream
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import java.util.*
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import sop.DecryptionResult
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import sop.ReadyWithResult
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import sop.SessionKey
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import sop.exception.SOPGPException.*
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import sop.util.UTF8Util
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interface Decrypt {
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/**
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* Makes the SOP consider signatures before this date invalid.
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*
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* @param timestamp timestamp
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* @return builder instance
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* @throws UnsupportedOption if this option is not supported
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*/
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@Throws(UnsupportedOption::class) fun verifyNotBefore(timestamp: Date): Decrypt
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/**
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* Makes the SOP consider signatures after this date invalid.
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*
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* @param timestamp timestamp
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* @return builder instance
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* @throws UnsupportedOption if this option is not supported
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*/
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@Throws(UnsupportedOption::class) fun verifyNotAfter(timestamp: Date): Decrypt
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/**
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* Adds one or more verification cert.
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*
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* @param cert input stream containing the cert(s)
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* @return builder instance
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* @throws BadData if the [InputStream] doesn't provide an OpenPGP certificate
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* @throws UnsupportedAsymmetricAlgo if the cert uses an unsupported asymmetric algorithm
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* @throws IOException in case of an IO error
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*/
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@Throws(BadData::class, UnsupportedAsymmetricAlgo::class, IOException::class)
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fun verifyWithCert(cert: InputStream): Decrypt
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/**
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* Adds one or more verification cert.
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*
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* @param cert byte array containing the cert(s)
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* @return builder instance
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* @throws BadData if the byte array doesn't contain an OpenPGP certificate
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* @throws UnsupportedAsymmetricAlgo if the cert uses an unsupported asymmetric algorithm
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* @throws IOException in case of an IO error
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*/
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@Throws(BadData::class, UnsupportedAsymmetricAlgo::class, IOException::class)
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fun verifyWithCert(cert: ByteArray): Decrypt = verifyWithCert(cert.inputStream())
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/**
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* Tries to decrypt with the given session key.
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*
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* @param sessionKey session key
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* @return builder instance
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* @throws UnsupportedOption if this option is not supported
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*/
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@Throws(UnsupportedOption::class) fun withSessionKey(sessionKey: SessionKey): Decrypt
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/**
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* Tries to decrypt with the given password.
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*
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* @param password password
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* @return builder instance
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* @throws PasswordNotHumanReadable if the password is not human-readable
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* @throws UnsupportedOption if this option is not supported
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*/
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@Throws(PasswordNotHumanReadable::class, UnsupportedOption::class)
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fun withPassword(password: String): Decrypt
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/**
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* Adds one or more decryption key.
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*
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* @param key input stream containing the key(s)
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* @return builder instance
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* @throws BadData if the [InputStream] does not provide an OpenPGP key
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* @throws UnsupportedAsymmetricAlgo if the key uses an unsupported asymmetric algorithm
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* @throws IOException in case of an IO error
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*/
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@Throws(BadData::class, UnsupportedAsymmetricAlgo::class, IOException::class)
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fun withKey(key: InputStream): Decrypt
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/**
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* Adds one or more decryption key.
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*
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* @param key byte array containing the key(s)
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* @return builder instance
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* @throws BadData if the byte array does not contain an OpenPGP key
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* @throws UnsupportedAsymmetricAlgo if the key uses an unsupported asymmetric algorithm
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* @throws IOException in case of an IO error
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*/
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@Throws(BadData::class, UnsupportedAsymmetricAlgo::class, IOException::class)
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fun withKey(key: ByteArray): Decrypt {
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return withKey(key.inputStream())
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}
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/**
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* Provide the decryption password for the secret key.
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*
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* @param password password
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* @return builder instance
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* @throws UnsupportedOption if the implementation does not support key passwords
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* @throws PasswordNotHumanReadable if the password is not human-readable
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*/
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@Throws(UnsupportedOption::class, PasswordNotHumanReadable::class)
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fun withKeyPassword(password: String): Decrypt {
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return withKeyPassword(password.toByteArray(UTF8Util.UTF8))
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}
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/**
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* Provide the decryption password for the secret key.
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*
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* @param password password
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* @return builder instance
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* @throws UnsupportedOption if the implementation does not support key passwords
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* @throws PasswordNotHumanReadable if the password is not human-readable
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*/
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@Throws(UnsupportedOption::class, PasswordNotHumanReadable::class)
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fun withKeyPassword(password: ByteArray): Decrypt
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/**
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* Decrypts the given ciphertext, returning verification results and plaintext.
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*
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* @param ciphertext ciphertext
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* @return ready with result
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* @throws BadData if the [InputStream] does not provide an OpenPGP message
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* @throws MissingArg if an argument required for decryption was not provided
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* @throws CannotDecrypt in case decryption fails for some reason
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* @throws KeyIsProtected if the decryption key cannot be unlocked (e.g. missing passphrase)
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* @throws IOException in case of an IO error
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*/
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@Throws(
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BadData::class,
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MissingArg::class,
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CannotDecrypt::class,
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KeyIsProtected::class,
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IOException::class)
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fun ciphertext(ciphertext: InputStream): ReadyWithResult<DecryptionResult>
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/**
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* Decrypts the given ciphertext, returning verification results and plaintext.
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*
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* @param ciphertext ciphertext
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* @return ready with result
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* @throws BadData if the byte array does not contain an encrypted OpenPGP message
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* @throws MissingArg in case of missing decryption method (password or key required)
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* @throws CannotDecrypt in case decryption fails for some reason
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* @throws KeyIsProtected if the decryption key cannot be unlocked (e.g. missing passphrase)
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* @throws IOException in case of an IO error
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*/
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@Throws(
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BadData::class,
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MissingArg::class,
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CannotDecrypt::class,
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KeyIsProtected::class,
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IOException::class)
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fun ciphertext(ciphertext: ByteArray): ReadyWithResult<DecryptionResult> {
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return ciphertext(ciphertext.inputStream())
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}
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}
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