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Add KeyRingReader.keyRing(*) mnethods to read either a public or secret key ring

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Paul Schaub 2022-08-08 13:14:18 +02:00
parent a1eceaf8e1
commit e6b89e2c3b
1 changed files with 86 additions and 0 deletions
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86
pgpainless-core/src/main/java/org/pgpainless/key/parsing/KeyRingReader.java
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@ -14,6 +14,7 @@ import java.util.List;
import javax.annotation.Nonnull;
import org.bouncycastle.openpgp.PGPException;
import org.bouncycastle.openpgp.PGPKeyRing;
import org.bouncycastle.openpgp.PGPMarker;
import org.bouncycastle.openpgp.PGPObjectFactory;
import org.bouncycastle.openpgp.PGPPublicKeyRing;
@ -32,6 +33,42 @@ public class KeyRingReader {
@SuppressWarnings("CharsetObjectCanBeUsed")
public static final Charset UTF8 = Charset.forName("UTF-8");
/**
* Read a {@link PGPKeyRing} (either {@link PGPSecretKeyRing} or {@link PGPPublicKeyRing}) from the given
* {@link InputStream}.
*
* @param inputStream inputStream containing the OpenPGP key or certificate
* @return key ring
* @throws IOException in case of an IO error
*/
public PGPKeyRing keyRing(@Nonnull InputStream inputStream) throws IOException {
return readKeyRing(inputStream);
}
/**
* Read a {@link PGPKeyRing} (either {@link PGPSecretKeyRing} or {@link PGPPublicKeyRing}) from the given
* byte array.
*
* @param bytes byte array containing the OpenPGP key or certificate
* @return key ring
* @throws IOException in case of an IO error
*/
public PGPKeyRing keyRing(@Nonnull byte[] bytes) throws IOException {
return keyRing(new ByteArrayInputStream(bytes));
}
/**
* Read a {@link PGPKeyRing} (either {@link PGPSecretKeyRing} or {@link PGPPublicKeyRing}) from the given
* ASCII armored string.
*
* @param asciiArmored ASCII armored OpenPGP key or certificate
* @return key ring
* @throws IOException in case of an IO error
*/
public PGPKeyRing keyRing(@Nonnull String asciiArmored) throws IOException {
return keyRing(asciiArmored.getBytes(UTF8));
}
public PGPPublicKeyRing publicKeyRing(@Nonnull InputStream inputStream) throws IOException {
return readPublicKeyRing(inputStream);
}
@ -95,6 +132,55 @@ public class KeyRingReader {
return keyRingCollection(asciiArmored.getBytes(UTF8), isSilent);
}
/**
* Read a {@link PGPKeyRing} (either {@link PGPSecretKeyRing} or {@link PGPPublicKeyRing}) from the given
* {@link InputStream}.
* This method will attempt to read at most {@link #MAX_ITERATIONS} objects from the stream before aborting.
* The first {@link PGPPublicKeyRing} or {@link PGPSecretKeyRing} will be returned.
*
* @param inputStream inputStream containing the OpenPGP key or certificate
* @return key ring
* @throws IOException in case of an IO error
*/
public static PGPKeyRing readKeyRing(@Nonnull InputStream inputStream) throws IOException {
return readKeyRing(inputStream, MAX_ITERATIONS);
}
/**
* Read a {@link PGPKeyRing} (either {@link PGPSecretKeyRing} or {@link PGPPublicKeyRing}) from the given
* {@link InputStream}.
* This method will attempt to read at most <pre>maxIterations</pre> objects from the stream before aborting.
* The first {@link PGPPublicKeyRing} or {@link PGPSecretKeyRing} will be returned.
*
* @param inputStream inputStream containing the OpenPGP key or certificate
* @param maxIterations maximum number of objects that are read before the method will abort
* @return key ring
* @throws IOException in case of an IO error
*/
public static PGPKeyRing readKeyRing(@Nonnull InputStream inputStream, int maxIterations) throws IOException {
PGPObjectFactory objectFactory = ImplementationFactory.getInstance().getPGPObjectFactory(
ArmorUtils.getDecoderStream(inputStream));
int i = 0;
Object next;
do {
next = objectFactory.nextObject();
if (next == null) {
return null;
}
if (next instanceof PGPMarker) {
continue;
}
if (next instanceof PGPSecretKeyRing) {
return (PGPSecretKeyRing) next;
}
if (next instanceof PGPPublicKeyRing) {
return (PGPPublicKeyRing) next;
}
} while (++i < maxIterations);
throw new IOException("Loop exceeded max iteration count.");
}
public static PGPPublicKeyRing readPublicKeyRing(@Nonnull InputStream inputStream) throws IOException {
return readPublicKeyRing(inputStream, MAX_ITERATIONS);
}