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Kotlin conversion: KeyInfo

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Paul Schaub 2023-09-08 14:57:58 +02:00
parent b6e47d7739
commit 8fe9d250a8
Signed by: vanitasvitae
GPG key ID: 62BEE9264BF17311
5 changed files with 143 additions and 141 deletions
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pgpainless-core/src/main/java/org/pgpainless/key/info/KeyInfo.java
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// SPDX-FileCopyrightText: 2020 Paul Schaub <vanitasvitae@fsfe.org>, 2021 Flowcrypt a.s.
//
// SPDX-License-Identifier: Apache-2.0
package org.pgpainless.key.info;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.gnu.GNUObjectIdentifiers;
import org.bouncycastle.bcpg.ECDHPublicBCPGKey;
import org.bouncycastle.bcpg.ECDSAPublicBCPGKey;
import org.bouncycastle.bcpg.ECPublicBCPGKey;
import org.bouncycastle.bcpg.EdDSAPublicBCPGKey;
import org.bouncycastle.bcpg.S2K;
import org.bouncycastle.jcajce.provider.asymmetric.util.ECUtil;
import org.bouncycastle.openpgp.PGPPublicKey;
import org.bouncycastle.openpgp.PGPSecretKey;
import org.pgpainless.algorithm.PublicKeyAlgorithm;
import org.pgpainless.key.generation.type.eddsa.EdDSACurve;
public class KeyInfo {
private final PGPSecretKey secretKey;
private final PGPPublicKey publicKey;
public KeyInfo(PGPSecretKey secretKey) {
this.secretKey = secretKey;
this.publicKey = secretKey.getPublicKey();
}
public KeyInfo(PGPPublicKey publicKey) {
this.publicKey = publicKey;
this.secretKey = null;
}
public String getCurveName() {
return getCurveName(publicKey);
}
/**
* Returns indication that a contained secret key is encrypted.
*
* @return true if secret key is encrypted, false if secret key is not encrypted or there is public key only.
*/
public boolean isEncrypted() {
return secretKey != null && isEncrypted(secretKey);
}
/**
* Returns indication that a contained secret key is not encrypted.
*
* @return true if secret key is not encrypted or there is public key only, false if secret key is encrypted.
*/
public boolean isDecrypted() {
return secretKey == null || isDecrypted(secretKey);
}
/**
* Returns indication that a contained secret key has S2K of a type GNU_DUMMY_S2K.
*
* @return true if secret key has S2K of a type GNU_DUMMY_S2K, false if there is public key only,
* or S2K on the secret key is absent or not of a type GNU_DUMMY_S2K.
*/
public boolean hasDummyS2K() {
return secretKey != null && hasDummyS2K(secretKey);
}
public static String getCurveName(PGPPublicKey publicKey) {
PublicKeyAlgorithm algorithm = PublicKeyAlgorithm.requireFromId(publicKey.getAlgorithm());
ECPublicBCPGKey key;
switch (algorithm) {
case ECDSA: {
key = (ECDSAPublicBCPGKey) publicKey.getPublicKeyPacket().getKey();
break;
}
case ECDH: {
key = (ECDHPublicBCPGKey) publicKey.getPublicKeyPacket().getKey();
break;
}
case EDDSA: {
key = (EdDSAPublicBCPGKey) publicKey.getPublicKeyPacket().getKey();
break;
}
default:
throw new IllegalArgumentException("Not an elliptic curve public key (" + algorithm + ")");
}
return getCurveName(key);
}
public static String getCurveName(ECPublicBCPGKey key) {
ASN1ObjectIdentifier identifier = key.getCurveOID();
String curveName = ECUtil.getCurveName(identifier);
if (curveName != null) {
return curveName;
}
// Workaround for ECUtil not recognizing ed25519
// see https://github.com/bcgit/bc-java/issues/1087
// UPDATE: Apparently 1087 is not fixed properly with BC 1.71
// See https://github.com/bcgit/bc-java/issues/1142
// TODO: Remove once BC comes out with a fix.
if (identifier.equals(GNUObjectIdentifiers.Ed25519)) {
return EdDSACurve._Ed25519.getName();
}
return null;
}
/**
* Returns indication that a secret key is encrypted.
*
* @param secretKey A secret key to examine.
* @return true if secret key is encrypted, false otherwise.
*/
public static boolean isEncrypted(PGPSecretKey secretKey) {
return secretKey.getS2KUsage() != 0;
}
/**
* Returns indication that a secret key is not encrypted.
*
* @param secretKey A secret key to examine.
* @return true if secret key is encrypted, false otherwise.
*/
public static boolean isDecrypted(PGPSecretKey secretKey) {
return secretKey.getS2KUsage() == 0;
}
/**
* Returns indication that a secret key has S2K of a type GNU_DUMMY_S2K.
*
* @param secretKey A secret key to examine.
* @return true if secret key has S2K of a type GNU_DUMMY_S2K, false otherwise.
*/
public static boolean hasDummyS2K(PGPSecretKey secretKey) {
final S2K s2k = secretKey.getS2K();
return s2k != null && s2k.getType() == S2K.GNU_DUMMY_S2K;
}
}