mirror of
https://github.com/moparisthebest/open-keychain
synced 2024-12-24 07:58:50 -05:00
Support verification of detached signatures
This commit is contained in:
Dominik Schürmann
parent
e8780b4410
commit
ae7ba2639f
@ -28,7 +28,6 @@ import org.spongycastle.openpgp.PGPEncryptedData;
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import org.spongycastle.openpgp.PGPEncryptedDataList;
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import org.spongycastle.openpgp.PGPException;
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import org.spongycastle.openpgp.PGPLiteralData;
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import org.spongycastle.openpgp.PGPObjectFactory;
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import org.spongycastle.openpgp.PGPOnePassSignature;
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import org.spongycastle.openpgp.PGPOnePassSignatureList;
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import org.spongycastle.openpgp.PGPPBEEncryptedData;
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@ -36,6 +35,7 @@ import org.spongycastle.openpgp.PGPPublicKeyEncryptedData;
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import org.spongycastle.openpgp.PGPSignature;
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import org.spongycastle.openpgp.PGPSignatureList;
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import org.spongycastle.openpgp.PGPUtil;
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import org.spongycastle.openpgp.jcajce.JcaPGPObjectFactory;
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import org.spongycastle.openpgp.operator.PBEDataDecryptorFactory;
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import org.spongycastle.openpgp.operator.PGPDigestCalculatorProvider;
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import org.spongycastle.openpgp.operator.PublicKeyDataDecryptorFactory;
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@ -83,6 +83,7 @@ public class PgpDecryptVerify extends BaseOperation {
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private Set<Long> mAllowedKeyIds;
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private boolean mDecryptMetadataOnly;
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private byte[] mDecryptedSessionKey;
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private byte[] mDetachedSignature;
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protected PgpDecryptVerify(Builder builder) {
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super(builder.mContext, builder.mProviderHelper, builder.mProgressable);
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@ -96,6 +97,7 @@ public class PgpDecryptVerify extends BaseOperation {
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this.mAllowedKeyIds = builder.mAllowedKeyIds;
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this.mDecryptMetadataOnly = builder.mDecryptMetadataOnly;
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this.mDecryptedSessionKey = builder.mDecryptedSessionKey;
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this.mDetachedSignature = builder.mDetachedSignature;
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}
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public static class Builder {
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@ -103,15 +105,16 @@ public class PgpDecryptVerify extends BaseOperation {
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private Context mContext;
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private ProviderHelper mProviderHelper;
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private InputData mData;
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private OutputStream mOutStream;
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// optional
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private OutputStream mOutStream = null;
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private Progressable mProgressable = null;
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private boolean mAllowSymmetricDecryption = true;
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private String mPassphrase = null;
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private Set<Long> mAllowedKeyIds = null;
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private boolean mDecryptMetadataOnly = false;
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private byte[] mDecryptedSessionKey = null;
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private byte[] mDetachedSignature = null;
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public Builder(Context context, ProviderHelper providerHelper,
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Progressable progressable,
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@ -156,6 +159,17 @@ public class PgpDecryptVerify extends BaseOperation {
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return this;
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}
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/**
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* If detachedSignature != null, it will be used exclusively to verify the signature
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*
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* @param detachedSignature
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* @return
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*/
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public Builder setDetachedSignature(byte[] detachedSignature) {
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mDetachedSignature = detachedSignature;
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return this;
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}
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public PgpDecryptVerify build() {
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return new PgpDecryptVerify(this);
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}
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@ -166,22 +180,30 @@ public class PgpDecryptVerify extends BaseOperation {
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*/
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public DecryptVerifyResult execute() {
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try {
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// automatically works with ascii armor input and binary
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InputStream in = PGPUtil.getDecoderStream(mData.getInputStream());
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if (mDetachedSignature != null) {
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Log.d(Constants.TAG, "Detached signature present, verifying with this signature only");
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if (in instanceof ArmoredInputStream) {
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ArmoredInputStream aIn = (ArmoredInputStream) in;
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// it is ascii armored
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Log.d(Constants.TAG, "ASCII Armor Header Line: " + aIn.getArmorHeaderLine());
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return verifyDetachedSignature(mData.getInputStream(), 0);
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} else {
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// automatically works with PGP ascii armor and PGP binary
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InputStream in = PGPUtil.getDecoderStream(mData.getInputStream());
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if (aIn.isClearText()) {
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// a cleartext signature, verify it with the other method
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return verifyCleartextSignature(aIn, 0);
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if (in instanceof ArmoredInputStream) {
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ArmoredInputStream aIn = (ArmoredInputStream) in;
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// it is ascii armored
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Log.d(Constants.TAG, "ASCII Armor Header Line: " + aIn.getArmorHeaderLine());
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if (aIn.isClearText()) {
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// a cleartext signature, verify it with the other method
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return verifyCleartextSignature(aIn, 0);
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} else {
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// else: ascii armored encryption! go on...
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return decryptVerify(in, 0);
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}
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} else {
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return decryptVerify(in, 0);
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}
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// else: ascii armored encryption! go on...
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}
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return decryptVerify(in, 0);
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} catch (PGPException e) {
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Log.d(Constants.TAG, "PGPException", e);
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OperationLog log = new OperationLog();
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@ -205,7 +227,7 @@ public class PgpDecryptVerify extends BaseOperation {
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log.add(LogType.MSG_DC, indent);
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indent += 1;
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PGPObjectFactory pgpF = new PGPObjectFactory(in, new JcaKeyFingerprintCalculator());
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JcaPGPObjectFactory pgpF = new JcaPGPObjectFactory(in);
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PGPEncryptedDataList enc;
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Object o = pgpF.nextObject();
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@ -238,15 +260,18 @@ public class PgpDecryptVerify extends BaseOperation {
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// https://tools.ietf.org/html/rfc4880#page56
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String charset = null;
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if (in instanceof ArmoredInputStream) {
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for (String header : ((ArmoredInputStream) in).getArmorHeaders()) {
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String[] pieces = header.split(":", 2);
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if (pieces.length == 2 && "charset".equalsIgnoreCase(pieces[0])) {
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charset = pieces[1].trim();
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break;
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ArmoredInputStream aIn = (ArmoredInputStream) in;
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if (aIn.getArmorHeaders() != null) {
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for (String header : aIn.getArmorHeaders()) {
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String[] pieces = header.split(":", 2);
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if (pieces.length == 2 && "charset".equalsIgnoreCase(pieces[0])) {
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charset = pieces[1].trim();
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break;
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}
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}
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if (charset != null) {
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log.add(LogType.MSG_DC_CHARSET, indent, charset);
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}
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}
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if (charset != null) {
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log.add(LogType.MSG_DC_CHARSET, indent, charset);
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}
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}
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@ -273,19 +298,19 @@ public class PgpDecryptVerify extends BaseOperation {
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);
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} catch (ProviderHelper.NotFoundException e) {
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// continue with the next packet in the while loop
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log.add(LogType.MSG_DC_ASKIP_NO_KEY, indent +1);
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log.add(LogType.MSG_DC_ASKIP_NO_KEY, indent + 1);
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continue;
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}
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if (secretKeyRing == null) {
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// continue with the next packet in the while loop
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log.add(LogType.MSG_DC_ASKIP_NO_KEY, indent +1);
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log.add(LogType.MSG_DC_ASKIP_NO_KEY, indent + 1);
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continue;
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}
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// get subkey which has been used for this encryption packet
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secretEncryptionKey = secretKeyRing.getSecretKey(subKeyId);
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if (secretEncryptionKey == null) {
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// should actually never happen, so no need to be more specific.
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log.add(LogType.MSG_DC_ASKIP_NO_KEY, indent +1);
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log.add(LogType.MSG_DC_ASKIP_NO_KEY, indent + 1);
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continue;
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}
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@ -299,7 +324,7 @@ public class PgpDecryptVerify extends BaseOperation {
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if (!mAllowedKeyIds.contains(masterKeyId)) {
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// this key is in our db, but NOT allowed!
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// continue with the next packet in the while loop
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log.add(LogType.MSG_DC_ASKIP_NOT_ALLOWED, indent +1);
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log.add(LogType.MSG_DC_ASKIP_NOT_ALLOWED, indent + 1);
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continue;
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}
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}
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@ -314,15 +339,15 @@ public class PgpDecryptVerify extends BaseOperation {
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try {
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// returns "" if key has no passphrase
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mPassphrase = getCachedPassphrase(subKeyId);
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log.add(LogType.MSG_DC_PASS_CACHED, indent +1);
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log.add(LogType.MSG_DC_PASS_CACHED, indent + 1);
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} catch (PassphraseCacheInterface.NoSecretKeyException e) {
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log.add(LogType.MSG_DC_ERROR_NO_KEY, indent +1);
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log.add(LogType.MSG_DC_ERROR_NO_KEY, indent + 1);
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return new DecryptVerifyResult(DecryptVerifyResult.RESULT_ERROR, log);
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}
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// if passphrase was not cached, return here indicating that a passphrase is missing!
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if (mPassphrase == null) {
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log.add(LogType.MSG_DC_PENDING_PASSPHRASE, indent +1);
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log.add(LogType.MSG_DC_PENDING_PASSPHRASE, indent + 1);
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DecryptVerifyResult result =
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new DecryptVerifyResult(DecryptVerifyResult.RESULT_PENDING_ASYM_PASSPHRASE, log);
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result.setKeyIdPassphraseNeeded(subKeyId);
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@ -338,8 +363,8 @@ public class PgpDecryptVerify extends BaseOperation {
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log.add(LogType.MSG_DC_SYM, indent);
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if (! mAllowSymmetricDecryption) {
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log.add(LogType.MSG_DC_SYM_SKIP, indent +1);
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if (!mAllowSymmetricDecryption) {
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log.add(LogType.MSG_DC_SYM_SKIP, indent + 1);
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continue;
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}
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@ -354,7 +379,7 @@ public class PgpDecryptVerify extends BaseOperation {
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// if no passphrase is given, return here
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// indicating that a passphrase is missing!
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if (mPassphrase == null) {
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log.add(LogType.MSG_DC_PENDING_PASSPHRASE, indent +1);
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log.add(LogType.MSG_DC_PENDING_PASSPHRASE, indent + 1);
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return new DecryptVerifyResult(DecryptVerifyResult.RESULT_PENDING_SYM_PASSPHRASE, log);
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}
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@ -399,13 +424,13 @@ public class PgpDecryptVerify extends BaseOperation {
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updateProgress(R.string.progress_extracting_key, currentProgress, 100);
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try {
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log.add(LogType.MSG_DC_UNLOCKING, indent +1);
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log.add(LogType.MSG_DC_UNLOCKING, indent + 1);
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if (!secretEncryptionKey.unlock(mPassphrase)) {
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log.add(LogType.MSG_DC_ERROR_BAD_PASSPHRASE, indent +1);
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log.add(LogType.MSG_DC_ERROR_BAD_PASSPHRASE, indent + 1);
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return new DecryptVerifyResult(DecryptVerifyResult.RESULT_ERROR, log);
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}
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} catch (PgpGeneralException e) {
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log.add(LogType.MSG_DC_ERROR_EXTRACT_KEY, indent +1);
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log.add(LogType.MSG_DC_ERROR_EXTRACT_KEY, indent + 1);
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return new DecryptVerifyResult(DecryptVerifyResult.RESULT_ERROR, log);
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}
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@ -417,7 +442,7 @@ public class PgpDecryptVerify extends BaseOperation {
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= secretEncryptionKey.getDecryptorFactory(mDecryptedSessionKey);
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clear = encryptedDataAsymmetric.getDataStream(decryptorFactory);
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} catch (NfcSyncPublicKeyDataDecryptorFactoryBuilder.NfcInteractionNeeded e) {
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log.add(LogType.MSG_DC_PENDING_NFC, indent +1);
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log.add(LogType.MSG_DC_PENDING_NFC, indent + 1);
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DecryptVerifyResult result =
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new DecryptVerifyResult(DecryptVerifyResult.RESULT_PENDING_NFC, log);
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result.setNfcState(secretEncryptionKey.getKeyId(), e.encryptedSessionKey, mPassphrase);
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@ -428,11 +453,11 @@ public class PgpDecryptVerify extends BaseOperation {
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// If we didn't find any useful data, error out
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// no packet has been found where we have the corresponding secret key in our db
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log.add(
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anyPacketFound ? LogType.MSG_DC_ERROR_NO_KEY : LogType.MSG_DC_ERROR_NO_DATA, indent +1);
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anyPacketFound ? LogType.MSG_DC_ERROR_NO_KEY : LogType.MSG_DC_ERROR_NO_DATA, indent + 1);
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return new DecryptVerifyResult(DecryptVerifyResult.RESULT_ERROR, log);
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}
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PGPObjectFactory plainFact = new PGPObjectFactory(clear, new JcaKeyFingerprintCalculator());
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JcaPGPObjectFactory plainFact = new JcaPGPObjectFactory(clear);
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Object dataChunk = plainFact.nextObject();
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OpenPgpSignatureResultBuilder signatureResultBuilder = new OpenPgpSignatureResultBuilder();
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int signatureIndex = -1;
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@ -443,25 +468,27 @@ public class PgpDecryptVerify extends BaseOperation {
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indent += 1;
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if (dataChunk instanceof PGPCompressedData) {
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log.add(LogType.MSG_DC_CLEAR_DECOMPRESS, indent +1);
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log.add(LogType.MSG_DC_CLEAR_DECOMPRESS, indent + 1);
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currentProgress += 2;
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updateProgress(R.string.progress_decompressing_data, currentProgress, 100);
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PGPCompressedData compressedData = (PGPCompressedData) dataChunk;
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PGPObjectFactory fact = new PGPObjectFactory(compressedData.getDataStream(), new JcaKeyFingerprintCalculator());
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JcaPGPObjectFactory fact = new JcaPGPObjectFactory(compressedData.getDataStream());
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dataChunk = fact.nextObject();
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plainFact = fact;
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}
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PGPOnePassSignature signature = null;
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if (dataChunk instanceof PGPOnePassSignatureList) {
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log.add(LogType.MSG_DC_CLEAR_SIGNATURE, indent +1);
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log.add(LogType.MSG_DC_CLEAR_SIGNATURE, indent + 1);
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currentProgress += 2;
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updateProgress(R.string.progress_processing_signature, currentProgress, 100);
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PGPOnePassSignatureList sigList = (PGPOnePassSignatureList) dataChunk;
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// NOTE: following code is similar to processSignature, but for PGPOnePassSignature
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// go through all signatures
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// and find out for which signature we have a key in our database
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for (int i = 0; i < sigList.size(); ++i) {
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@ -507,7 +534,7 @@ public class PgpDecryptVerify extends BaseOperation {
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OpenPgpMetadata metadata;
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if (dataChunk instanceof PGPLiteralData) {
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log.add(LogType.MSG_DC_CLEAR_DATA, indent +1);
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log.add(LogType.MSG_DC_CLEAR_DATA, indent + 1);
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indent += 2;
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currentProgress += 4;
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updateProgress(R.string.progress_decrypting, currentProgress, 100);
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@ -549,12 +576,12 @@ public class PgpDecryptVerify extends BaseOperation {
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literalData.getModificationTime().getTime(),
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originalSize);
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if ( ! originalFilename.equals("")) {
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if (!originalFilename.equals("")) {
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log.add(LogType.MSG_DC_CLEAR_META_FILE, indent + 1, originalFilename);
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}
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log.add(LogType.MSG_DC_CLEAR_META_MIME, indent +1,
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log.add(LogType.MSG_DC_CLEAR_META_MIME, indent + 1,
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mimeType);
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log.add(LogType.MSG_DC_CLEAR_META_TIME, indent +1,
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log.add(LogType.MSG_DC_CLEAR_META_TIME, indent + 1,
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new Date(literalData.getModificationTime().getTime()).toString());
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if (originalSize != 0) {
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log.add(LogType.MSG_DC_CLEAR_META_SIZE, indent + 1,
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@ -589,7 +616,9 @@ public class PgpDecryptVerify extends BaseOperation {
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int length;
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byte[] buffer = new byte[1 << 16];
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while ((length = dataIn.read(buffer)) > 0) {
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mOutStream.write(buffer, 0, length);
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if (mOutStream != null) {
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mOutStream.write(buffer, 0, length);
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}
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// update signature buffer if signature is also present
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if (signature != null) {
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@ -623,9 +652,9 @@ public class PgpDecryptVerify extends BaseOperation {
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// Verify signature and check binding signatures
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boolean validSignature = signature.verify(messageSignature);
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if (validSignature) {
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log.add(LogType.MSG_DC_CLEAR_SIGNATURE_OK, indent +1);
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log.add(LogType.MSG_DC_CLEAR_SIGNATURE_OK, indent + 1);
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} else {
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log.add(LogType.MSG_DC_CLEAR_SIGNATURE_BAD, indent +1);
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log.add(LogType.MSG_DC_CLEAR_SIGNATURE_BAD, indent + 1);
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}
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signatureResultBuilder.setValidSignature(validSignature);
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}
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@ -687,7 +716,7 @@ public class PgpDecryptVerify extends BaseOperation {
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ByteArrayOutputStream out = new ByteArrayOutputStream();
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updateProgress(R.string.progress_done, 0, 100);
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updateProgress(R.string.progress_reading_data, 0, 100);
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ByteArrayOutputStream lineOut = new ByteArrayOutputStream();
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int lookAhead = readInputLine(lineOut, aIn);
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@ -707,10 +736,12 @@ public class PgpDecryptVerify extends BaseOperation {
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out.close();
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byte[] clearText = out.toByteArray();
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mOutStream.write(clearText);
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if (mOutStream != null) {
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mOutStream.write(clearText);
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}
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updateProgress(R.string.progress_processing_signature, 60, 100);
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PGPObjectFactory pgpFact = new PGPObjectFactory(aIn, new JcaKeyFingerprintCalculator());
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JcaPGPObjectFactory pgpFact = new JcaPGPObjectFactory(aIn);
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PGPSignatureList sigList = (PGPSignatureList) pgpFact.nextObject();
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if (sigList == null) {
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@ -718,45 +749,7 @@ public class PgpDecryptVerify extends BaseOperation {
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return new DecryptVerifyResult(DecryptVerifyResult.RESULT_ERROR, log);
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}
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CanonicalizedPublicKeyRing signingRing = null;
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CanonicalizedPublicKey signingKey = null;
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int signatureIndex = -1;
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// go through all signatures
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// and find out for which signature we have a key in our database
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for (int i = 0; i < sigList.size(); ++i) {
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try {
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long sigKeyId = sigList.get(i).getKeyID();
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signingRing = mProviderHelper.getCanonicalizedPublicKeyRing(
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KeyRings.buildUnifiedKeyRingsFindBySubkeyUri(sigKeyId)
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);
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signingKey = signingRing.getPublicKey(sigKeyId);
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signatureIndex = i;
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} catch (ProviderHelper.NotFoundException e) {
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Log.d(Constants.TAG, "key not found, trying next signature...");
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}
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}
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PGPSignature signature = null;
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if (signingKey != null) {
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// key found in our database!
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signature = sigList.get(signatureIndex);
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signatureResultBuilder.initValid(signingRing, signingKey);
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JcaPGPContentVerifierBuilderProvider contentVerifierBuilderProvider =
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new JcaPGPContentVerifierBuilderProvider()
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.setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME);
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signature.init(contentVerifierBuilderProvider, signingKey.getPublicKey());
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} else {
|
||||
// no key in our database -> return "unknown pub key" status including the first key id
|
||||
if (!sigList.isEmpty()) {
|
||||
signatureResultBuilder.setSignatureAvailable(true);
|
||||
signatureResultBuilder.setKnownKey(false);
|
||||
signatureResultBuilder.setKeyId(sigList.get(0).getKeyID());
|
||||
}
|
||||
}
|
||||
PGPSignature signature = processPGPSignatureList(sigList, signatureResultBuilder);
|
||||
|
||||
if (signature != null) {
|
||||
try {
|
||||
@ -804,6 +797,134 @@ public class PgpDecryptVerify extends BaseOperation {
|
||||
return result;
|
||||
}
|
||||
|
||||
private DecryptVerifyResult verifyDetachedSignature(InputStream in, int indent)
|
||||
throws IOException, PGPException {
|
||||
|
||||
OperationLog log = new OperationLog();
|
||||
|
||||
OpenPgpSignatureResultBuilder signatureResultBuilder = new OpenPgpSignatureResultBuilder();
|
||||
// detached signatures are never encrypted
|
||||
signatureResultBuilder.setSignatureOnly(true);
|
||||
|
||||
updateProgress(R.string.progress_processing_signature, 0, 100);
|
||||
InputStream detachedSigIn = new ByteArrayInputStream(mDetachedSignature);
|
||||
detachedSigIn = PGPUtil.getDecoderStream(detachedSigIn);
|
||||
|
||||
JcaPGPObjectFactory pgpFact = new JcaPGPObjectFactory(detachedSigIn);
|
||||
|
||||
PGPSignatureList sigList;
|
||||
Object o = pgpFact.nextObject();
|
||||
if (o instanceof PGPCompressedData) {
|
||||
PGPCompressedData c1 = (PGPCompressedData) o;
|
||||
pgpFact = new JcaPGPObjectFactory(c1.getDataStream());
|
||||
sigList = (PGPSignatureList) pgpFact.nextObject();
|
||||
} else if (o instanceof PGPSignatureList) {
|
||||
sigList = (PGPSignatureList) o;
|
||||
} else {
|
||||
log.add(LogType.MSG_DC_ERROR_INVALID_SIGLIST, 0);
|
||||
return new DecryptVerifyResult(DecryptVerifyResult.RESULT_ERROR, log);
|
||||
}
|
||||
|
||||
PGPSignature signature = processPGPSignatureList(sigList, signatureResultBuilder);
|
||||
|
||||
if (signature != null) {
|
||||
updateProgress(R.string.progress_reading_data, 60, 100);
|
||||
|
||||
ProgressScaler progressScaler = new ProgressScaler(mProgressable, 60, 90, 100);
|
||||
long alreadyWritten = 0;
|
||||
long wholeSize = mData.getSize() - mData.getStreamPosition();
|
||||
int length;
|
||||
byte[] buffer = new byte[1 << 16];
|
||||
while ((length = in.read(buffer)) > 0) {
|
||||
if (mOutStream != null) {
|
||||
mOutStream.write(buffer, 0, length);
|
||||
}
|
||||
|
||||
// update signature buffer if signature is also present
|
||||
signature.update(buffer, 0, length);
|
||||
|
||||
alreadyWritten += length;
|
||||
if (wholeSize > 0) {
|
||||
long progress = 100 * alreadyWritten / wholeSize;
|
||||
// stop at 100% for wrong file sizes...
|
||||
if (progress > 100) {
|
||||
progress = 100;
|
||||
}
|
||||
progressScaler.setProgress((int) progress, 100);
|
||||
} else {
|
||||
// TODO: slow annealing to fake a progress?
|
||||
}
|
||||
}
|
||||
|
||||
updateProgress(R.string.progress_verifying_signature, 90, 100);
|
||||
log.add(LogType.MSG_DC_CLEAR_SIGNATURE_CHECK, indent);
|
||||
|
||||
// these are not cleartext signatures!
|
||||
signatureResultBuilder.setSignatureOnly(false);
|
||||
|
||||
// Verify signature and check binding signatures
|
||||
boolean validSignature = signature.verify();
|
||||
if (validSignature) {
|
||||
log.add(LogType.MSG_DC_CLEAR_SIGNATURE_OK, indent + 1);
|
||||
} else {
|
||||
log.add(LogType.MSG_DC_CLEAR_SIGNATURE_BAD, indent + 1);
|
||||
}
|
||||
signatureResultBuilder.setValidSignature(validSignature);
|
||||
}
|
||||
|
||||
updateProgress(R.string.progress_done, 100, 100);
|
||||
|
||||
log.add(LogType.MSG_DC_OK, indent);
|
||||
|
||||
DecryptVerifyResult result = new DecryptVerifyResult(DecryptVerifyResult.RESULT_OK, log);
|
||||
result.setSignatureResult(signatureResultBuilder.build());
|
||||
return result;
|
||||
}
|
||||
|
||||
private PGPSignature processPGPSignatureList(PGPSignatureList sigList, OpenPgpSignatureResultBuilder signatureResultBuilder) throws PGPException {
|
||||
CanonicalizedPublicKeyRing signingRing = null;
|
||||
CanonicalizedPublicKey signingKey = null;
|
||||
int signatureIndex = -1;
|
||||
|
||||
// go through all signatures
|
||||
// and find out for which signature we have a key in our database
|
||||
for (int i = 0; i < sigList.size(); ++i) {
|
||||
try {
|
||||
long sigKeyId = sigList.get(i).getKeyID();
|
||||
signingRing = mProviderHelper.getCanonicalizedPublicKeyRing(
|
||||
KeyRings.buildUnifiedKeyRingsFindBySubkeyUri(sigKeyId)
|
||||
);
|
||||
signingKey = signingRing.getPublicKey(sigKeyId);
|
||||
signatureIndex = i;
|
||||
} catch (ProviderHelper.NotFoundException e) {
|
||||
Log.d(Constants.TAG, "key not found, trying next signature...");
|
||||
}
|
||||
}
|
||||
|
||||
PGPSignature signature = null;
|
||||
|
||||
if (signingKey != null) {
|
||||
// key found in our database!
|
||||
signature = sigList.get(signatureIndex);
|
||||
|
||||
signatureResultBuilder.initValid(signingRing, signingKey);
|
||||
|
||||
JcaPGPContentVerifierBuilderProvider contentVerifierBuilderProvider =
|
||||
new JcaPGPContentVerifierBuilderProvider()
|
||||
.setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME);
|
||||
signature.init(contentVerifierBuilderProvider, signingKey.getPublicKey());
|
||||
} else {
|
||||
// no key in our database -> return "unknown pub key" status including the first key id
|
||||
if (!sigList.isEmpty()) {
|
||||
signatureResultBuilder.setSignatureAvailable(true);
|
||||
signatureResultBuilder.setKnownKey(false);
|
||||
signatureResultBuilder.setKeyId(sigList.get(0).getKeyID());
|
||||
}
|
||||
}
|
||||
|
||||
return signature;
|
||||
}
|
||||
|
||||
/**
|
||||
* Mostly taken from ClearSignedFileProcessor in Bouncy Castle
|
||||
*/
|
||||
|
||||
@ -481,7 +481,8 @@ public class OpenPgpService extends RemoteService {
|
||||
InputStream is = new ParcelFileDescriptor.AutoCloseInputStream(input);
|
||||
|
||||
OutputStream os;
|
||||
if (decryptMetadataOnly) {
|
||||
// output is optional, e.g., for verifying detached signatures
|
||||
if (decryptMetadataOnly || output == null) {
|
||||
os = null;
|
||||
} else {
|
||||
os = new ParcelFileDescriptor.AutoCloseOutputStream(output);
|
||||
@ -498,15 +499,17 @@ public class OpenPgpService extends RemoteService {
|
||||
|
||||
byte[] nfcDecryptedSessionKey = data.getByteArrayExtra(OpenPgpApi.EXTRA_NFC_DECRYPTED_SESSION_KEY);
|
||||
|
||||
byte[] detachedSignature = data.getByteArrayExtra(OpenPgpApi.EXTRA_DETACHED_SIGNATURE);
|
||||
|
||||
// allow only private keys associated with accounts of this app
|
||||
// no support for symmetric encryption
|
||||
builder.setPassphrase(passphrase)
|
||||
.setAllowSymmetricDecryption(false)
|
||||
.setAllowedKeyIds(allowedKeyIds)
|
||||
.setDecryptMetadataOnly(decryptMetadataOnly)
|
||||
.setNfcState(nfcDecryptedSessionKey);
|
||||
.setNfcState(nfcDecryptedSessionKey)
|
||||
.setDetachedSignature(detachedSignature);
|
||||
|
||||
// TODO: currently does not support binary signed-only content
|
||||
DecryptVerifyResult pgpResult = builder.build().execute();
|
||||
|
||||
if (pgpResult.isPending()) {
|
||||
@ -678,15 +681,16 @@ public class OpenPgpService extends RemoteService {
|
||||
|
||||
// version code is required and needs to correspond to version code of service!
|
||||
// History of versions in org.openintents.openpgp.util.OpenPgpApi
|
||||
// we support 3, 4, 5
|
||||
// we support 3, 4, 5, 6
|
||||
if (data.getIntExtra(OpenPgpApi.EXTRA_API_VERSION, -1) != 3
|
||||
&& data.getIntExtra(OpenPgpApi.EXTRA_API_VERSION, -1) != 4
|
||||
&& data.getIntExtra(OpenPgpApi.EXTRA_API_VERSION, -1) != 5) {
|
||||
&& data.getIntExtra(OpenPgpApi.EXTRA_API_VERSION, -1) != 5
|
||||
&& data.getIntExtra(OpenPgpApi.EXTRA_API_VERSION, -1) != 6) {
|
||||
Intent result = new Intent();
|
||||
OpenPgpError error = new OpenPgpError
|
||||
(OpenPgpError.INCOMPATIBLE_API_VERSIONS, "Incompatible API versions!\n"
|
||||
+ "used API version: " + data.getIntExtra(OpenPgpApi.EXTRA_API_VERSION, -1) + "\n"
|
||||
+ "supported API versions: 3, 4");
|
||||
+ "supported API versions: 3, 4, 5, 6");
|
||||
result.putExtra(OpenPgpApi.RESULT_ERROR, error);
|
||||
result.putExtra(OpenPgpApi.RESULT_CODE, OpenPgpApi.RESULT_CODE_ERROR);
|
||||
return result;
|
||||
|
||||
2
extern/openpgp-api-lib
vendored
2
extern/openpgp-api-lib
vendored
@ -1 +1 @@
|
||||
Subproject commit edcc61970f24bb3601af26d89f49d384e7a3aff6
|
||||
Subproject commit 4f5fcbf94063301929d50370ab44895c6b4e1bd3
|
||||
Loading…
Reference in New Issue
Block a user