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Kotlin conversion: SignatureVerification

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This commit is contained in:
Paul Schaub 2023-08-30 16:10:51 +02:00
parent 2e4637c62f
commit 1abcd75824
Signed by: vanitasvitae
GPG key ID: 62BEE9264BF17311
2 changed files with 48 additions and 106 deletions
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106
pgpainless-core/src/main/java/org/pgpainless/decryption_verification/SignatureVerification.java
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@ -1,106 +0,0 @@
// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
//
// SPDX-License-Identifier: Apache-2.0
package org.pgpainless.decryption_verification;
import javax.annotation.Nullable;
import org.bouncycastle.openpgp.PGPSignature;
import org.bouncycastle.util.encoders.Hex;
import org.pgpainless.exception.SignatureValidationException;
import org.pgpainless.key.SubkeyIdentifier;
/**
* Tuple of a signature and an identifier of its corresponding verification key.
* Semantic meaning of the signature verification (success, failure) is merely given by context.
* E.g. {@link OpenPgpMetadata#getVerifiedInbandSignatures()} contains verified verifications,
* while the class {@link Failure} contains failed verifications.
*/
public class SignatureVerification {
private final PGPSignature signature;
private final SubkeyIdentifier signingKey;
/**
* Construct a verification tuple.
*
* @param signature PGPSignature object
* @param signingKey identifier of the signing key
*/
public SignatureVerification(PGPSignature signature, @Nullable SubkeyIdentifier signingKey) {
this.signature = signature;
this.signingKey = signingKey;
}
/**
* Return the {@link PGPSignature}.
*
* @return signature
*/
public PGPSignature getSignature() {
return signature;
}
/**
* Return a {@link SubkeyIdentifier} of the (sub-) key that is used for signature verification.
* Note, that this method might return null, e.g. in case of a {@link Failure} due to missing verification key.
*
* @return verification key identifier
*/
@Nullable
public SubkeyIdentifier getSigningKey() {
return signingKey;
}
@Override
public String toString() {
return "Signature: " + (signature != null ? Hex.toHexString(signature.getDigestPrefix()) : "null")
+ "; Key: " + (signingKey != null ? signingKey.toString() : "null") + ";";
}
/**
* Tuple object of a {@link SignatureVerification} and the corresponding {@link SignatureValidationException}
* that caused the verification to fail.
*/
public static class Failure {
private final SignatureVerification signatureVerification;
private final SignatureValidationException validationException;
/**
* Construct a signature verification failure object.
*
* @param verification verification
* @param validationException exception that caused the verification to fail
*/
public Failure(SignatureVerification verification, SignatureValidationException validationException) {
this.signatureVerification = verification;
this.validationException = validationException;
}
/**
* Return the verification (tuple of {@link PGPSignature} and corresponding {@link SubkeyIdentifier})
* of the signing/verification key.
*
* @return verification
*/
public SignatureVerification getSignatureVerification() {
return signatureVerification;
}
/**
* Return the {@link SignatureValidationException} that caused the verification to fail.
*
* @return exception
*/
public SignatureValidationException getValidationException() {
return validationException;
}
@Override
public String toString() {
return signatureVerification.toString() + " Failure: " + getValidationException().getMessage();
}
}
}

48
pgpainless-core/src/main/kotlin/org/pgpainless/decryption_verification/SignatureVerification.kt Normal file
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@ -0,0 +1,48 @@
// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
//
// SPDX-License-Identifier: Apache-2.0
package org.pgpainless.decryption_verification
import org.bouncycastle.openpgp.PGPSignature
import org.pgpainless.decryption_verification.SignatureVerification.Failure
import org.pgpainless.exception.SignatureValidationException
import org.pgpainless.key.SubkeyIdentifier
import org.pgpainless.signature.SignatureUtils
/**
* Tuple of a signature and an identifier of its corresponding verification key.
* Semantic meaning of the signature verification (success, failure) is merely given by context.
* E.g. [MessageMetadata.getVerifiedInlineSignatures] contains verified verifications,
* while the class [Failure] contains failed verifications.
*
* @param signature PGPSignature object
* @param signingKey [SubkeyIdentifier] of the (sub-) key that is used for signature verification.
* Note, that this might be null, e.g. in case of a [Failure] due to missing verification key.
*/
data class SignatureVerification(
val signature: PGPSignature,
val signingKey: SubkeyIdentifier?
) {
override fun toString(): String {
return "Signature: ${SignatureUtils.getSignatureDigestPrefix(signature)};" +
" Key: ${signingKey?.toString() ?: "null"};"
}
/**
* Tuple object of a [SignatureVerification] and the corresponding [SignatureValidationException]
* that caused the verification to fail.
*
* @param signatureVerification verification (tuple of [PGPSignature] and corresponding [SubkeyIdentifier])
* @param validationException exception that caused the verification to fail
*/
data class Failure(
val signatureVerification: SignatureVerification,
val validationException: SignatureValidationException
) {
override fun toString(): String {
return "$signatureVerification Failure: ${validationException.message}"
}
}
}