mirror of
https://github.com/moparisthebest/open-keychain
synced 2024-11-12 03:55:09 -05:00
Merge openpgp-card lib into OpenKeychain, it was already depending on OK, no need to separate
This commit is contained in:
Dominik Schürmann
parent
f7d49a48cb
commit
b373c866e7
@ -19,7 +19,6 @@ dependencies {
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compile project(':extern:minidns')
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compile project(':extern:minidns')
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compile project(':extern:KeybaseLib:Lib')
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compile project(':extern:KeybaseLib:Lib')
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compile project(':extern:TokenAutoComplete:library')
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compile project(':extern:TokenAutoComplete:library')
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compile project(':extern:openpgp-card-nfc-lib:library')
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compile project(':extern:safeslinger-exchange')
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compile project(':extern:safeslinger-exchange')
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}
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}
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@ -619,6 +619,9 @@
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<activity
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<activity
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android:name=".ui.PassphraseDialogActivity"
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android:name=".ui.PassphraseDialogActivity"
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android:theme="@android:style/Theme.NoDisplay" />
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android:theme="@android:style/Theme.NoDisplay" />
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<activity
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android:name="ui.NfcActivity"
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android:launchMode="singleTop" />
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<activity
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<activity
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android:name=".ui.HelpActivity"
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android:name=".ui.HelpActivity"
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android:label="@string/title_help" />
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android:label="@string/title_help" />
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@ -0,0 +1,144 @@
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/**
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* Copyright (c) 2013-2014 Philipp Jakubeit, Signe Rüsch, Dominik Schürmann
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* Copyright (c) 2000-2013 The Legion of the Bouncy Castle Inc. (http://www.bouncycastle.org)
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*
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* Licensed under the Bouncy Castle License (MIT license). See LICENSE file for details.
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*/
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package org.spongycastle.openpgp.operator.jcajce;
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import org.spongycastle.openpgp.PGPException;
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import org.spongycastle.openpgp.PGPPrivateKey;
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import org.spongycastle.openpgp.operator.PGPContentSigner;
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import org.spongycastle.openpgp.operator.PGPContentSignerBuilder;
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import org.spongycastle.openpgp.operator.PGPDigestCalculator;
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import java.io.OutputStream;
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import java.security.Provider;
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import java.util.Date;
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/**
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* This class is based on JcaPGPContentSignerBuilder.
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*
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* Instead of using a Signature object based on a privateKey, this class only calculates the digest
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* of the output stream and gives the result back using a RuntimeException.
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*/
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public class NfcSyncPGPContentSignerBuilder
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implements PGPContentSignerBuilder
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{
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private JcaPGPDigestCalculatorProviderBuilder digestCalculatorProviderBuilder = new JcaPGPDigestCalculatorProviderBuilder();
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private int hashAlgorithm;
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private int keyAlgorithm;
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private long keyID;
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private byte[] signedHash;
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private Date creationTimestamp;
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public static class NfcInteractionNeeded extends RuntimeException
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{
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public byte[] hashToSign;
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public Date creationTimestamp;
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public int hashAlgo;
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public NfcInteractionNeeded(byte[] hashToSign, int hashAlgo, Date creationTimestamp)
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{
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super("NFC interaction required!");
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this.hashToSign = hashToSign;
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this.hashAlgo = hashAlgo;
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this.creationTimestamp = creationTimestamp;
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}
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}
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public NfcSyncPGPContentSignerBuilder(int keyAlgorithm, int hashAlgorithm, long keyID, byte[] signedHash, Date creationTimestamp)
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{
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this.keyAlgorithm = keyAlgorithm;
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this.hashAlgorithm = hashAlgorithm;
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this.keyID = keyID;
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this.signedHash = signedHash;
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this.creationTimestamp = creationTimestamp;
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}
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public NfcSyncPGPContentSignerBuilder setProvider(Provider provider)
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{
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digestCalculatorProviderBuilder.setProvider(provider);
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return this;
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}
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public NfcSyncPGPContentSignerBuilder setProvider(String providerName)
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{
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digestCalculatorProviderBuilder.setProvider(providerName);
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return this;
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}
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public NfcSyncPGPContentSignerBuilder setDigestProvider(Provider provider)
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{
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digestCalculatorProviderBuilder.setProvider(provider);
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return this;
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}
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public NfcSyncPGPContentSignerBuilder setDigestProvider(String providerName)
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{
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digestCalculatorProviderBuilder.setProvider(providerName);
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return this;
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}
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public PGPContentSigner build(final int signatureType, PGPPrivateKey privateKey)
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throws PGPException {
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// NOTE: privateKey is null in this case!
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return build(signatureType, keyID);
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}
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public PGPContentSigner build(final int signatureType, final long keyID)
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throws PGPException
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{
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final PGPDigestCalculator digestCalculator = digestCalculatorProviderBuilder.build().get(hashAlgorithm);
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return new PGPContentSigner()
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{
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public int getType()
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{
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return signatureType;
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}
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public int getHashAlgorithm()
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{
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return hashAlgorithm;
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}
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public int getKeyAlgorithm()
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{
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return keyAlgorithm;
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}
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public long getKeyID()
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{
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return keyID;
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}
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public OutputStream getOutputStream()
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{
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return digestCalculator.getOutputStream();
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}
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public byte[] getSignature() {
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if (signedHash != null) {
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// we already have the signed hash from a previous execution, return this!
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return signedHash;
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} else {
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// catch this when signatureGenerator.generate() is executed and divert digest to card,
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// when doing the operation again reuse creationTimestamp (this will be hashed)
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throw new NfcInteractionNeeded(digestCalculator.getDigest(), getHashAlgorithm(), creationTimestamp);
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}
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}
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public byte[] getDigest()
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{
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return digestCalculator.getDigest();
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}
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};
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}
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}
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@ -0,0 +1,275 @@
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/**
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* Copyright (c) 2013-2014 Philipp Jakubeit, Signe Rüsch, Dominik Schürmann
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*
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* Licensed under the Bouncy Castle License (MIT license). See LICENSE file for details.
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*/
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package org.spongycastle.openpgp.operator.jcajce;
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import org.spongycastle.bcpg.PublicKeyAlgorithmTags;
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import org.spongycastle.jcajce.util.DefaultJcaJceHelper;
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import org.spongycastle.jcajce.util.NamedJcaJceHelper;
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import org.spongycastle.jcajce.util.ProviderJcaJceHelper;
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import org.spongycastle.openpgp.PGPException;
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import org.spongycastle.openpgp.PGPPublicKey;
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import org.spongycastle.openpgp.operator.PGPDataDecryptor;
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import org.spongycastle.openpgp.operator.PublicKeyDataDecryptorFactory;
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import java.security.Provider;
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/**
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* This class is based on JcePublicKeyDataDecryptorFactoryBuilder
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*
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*/
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public class NfcSyncPublicKeyDataDecryptorFactoryBuilder
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{
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private OperatorHelper helper = new OperatorHelper(new DefaultJcaJceHelper());
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private OperatorHelper contentHelper = new OperatorHelper(new DefaultJcaJceHelper());
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private JcaPGPKeyConverter keyConverter = new JcaPGPKeyConverter();
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// private JcaPGPDigestCalculatorProviderBuilder digestCalculatorProviderBuilder = new JcaPGPDigestCalculatorProviderBuilder();
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// private JcaKeyFingerprintCalculator fingerprintCalculator = new JcaKeyFingerprintCalculator();
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public static class NfcInteractionNeeded extends RuntimeException
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{
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public byte[] encryptedSessionKey;
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public NfcInteractionNeeded(byte[] encryptedSessionKey)
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{
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super("NFC interaction required!");
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this.encryptedSessionKey = encryptedSessionKey;
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}
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}
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public NfcSyncPublicKeyDataDecryptorFactoryBuilder()
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{
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}
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/**
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* Set the provider object to use for creating cryptographic primitives in the resulting factory the builder produces.
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*
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* @param provider provider object for cryptographic primitives.
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* @return the current builder.
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*/
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public NfcSyncPublicKeyDataDecryptorFactoryBuilder setProvider(Provider provider)
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{
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this.helper = new OperatorHelper(new ProviderJcaJceHelper(provider));
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keyConverter.setProvider(provider);
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this.contentHelper = helper;
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return this;
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}
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/**
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* Set the provider name to use for creating cryptographic primitives in the resulting factory the builder produces.
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*
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* @param providerName the name of the provider to reference for cryptographic primitives.
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* @return the current builder.
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*/
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public NfcSyncPublicKeyDataDecryptorFactoryBuilder setProvider(String providerName)
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{
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this.helper = new OperatorHelper(new NamedJcaJceHelper(providerName));
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keyConverter.setProvider(providerName);
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this.contentHelper = helper;
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return this;
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}
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public NfcSyncPublicKeyDataDecryptorFactoryBuilder setContentProvider(Provider provider)
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{
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this.contentHelper = new OperatorHelper(new ProviderJcaJceHelper(provider));
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return this;
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}
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public NfcSyncPublicKeyDataDecryptorFactoryBuilder setContentProvider(String providerName)
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{
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this.contentHelper = new OperatorHelper(new NamedJcaJceHelper(providerName));
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return this;
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}
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public PublicKeyDataDecryptorFactory build(final byte[] nfcDecrypted) {
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return new PublicKeyDataDecryptorFactory()
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{
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public byte[] recoverSessionData(int keyAlgorithm, byte[][] secKeyData)
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throws PGPException
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{
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if (keyAlgorithm == PublicKeyAlgorithmTags.ECDH)
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{
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throw new PGPException("ECDH not supported!");
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}
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return decryptSessionData(keyAlgorithm, secKeyData, nfcDecrypted);
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}
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public PGPDataDecryptor createDataDecryptor(boolean withIntegrityPacket, int encAlgorithm, byte[] key)
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throws PGPException
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{
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return contentHelper.createDataDecryptor(withIntegrityPacket, encAlgorithm, key);
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}
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};
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}
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// public PublicKeyDataDecryptorFactory build(final PrivateKey privKey)
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// {
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// return new PublicKeyDataDecryptorFactory()
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// {
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// public byte[] recoverSessionData(int keyAlgorithm, byte[][] secKeyData)
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// throws PGPException
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// {
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// if (keyAlgorithm == PublicKeyAlgorithmTags.ECDH)
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// {
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// throw new PGPException("ECDH requires use of PGPPrivateKey for decryption");
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// }
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// return decryptSessionData(keyAlgorithm, privKey, secKeyData);
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// }
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//
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// public PGPDataDecryptor createDataDecryptor(boolean withIntegrityPacket, int encAlgorithm, byte[] key)
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// throws PGPException
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// {
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// return contentHelper.createDataDecryptor(withIntegrityPacket, encAlgorithm, key);
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// }
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// };
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// }
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// public PublicKeyDataDecryptorFactory build(final PGPPrivateKey privKey, final byte[] nfcDecrypted)
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// {
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// return new PublicKeyDataDecryptorFactory()
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// {
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// public byte[] recoverSessionData(int keyAlgorithm, byte[][] secKeyData)
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// throws PGPException
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// {
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// if (keyAlgorithm == PublicKeyAlgorithmTags.ECDH)
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// {
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// return decryptSessionData(privKey.getPrivateKeyDataPacket(), privKey.getPublicKeyPacket(), secKeyData);
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// }
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//
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// return decryptSessionData(keyAlgorithm, keyConverter.getPrivateKey(privKey), secKeyData, nfcDecrypted);
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// }
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//
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// public PGPDataDecryptor createDataDecryptor(boolean withIntegrityPacket, int encAlgorithm, byte[] key)
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// throws PGPException
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// {
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// return contentHelper.createDataDecryptor(withIntegrityPacket, encAlgorithm, key);
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// }
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// };
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// }
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// private byte[] decryptSessionData(BCPGKey privateKeyPacket, PublicKeyPacket pubKeyData, byte[][] secKeyData)
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// throws PGPException
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// {
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// ECDHPublicBCPGKey ecKey = (ECDHPublicBCPGKey)pubKeyData.getKey();
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// X9ECParameters x9Params = NISTNamedCurves.getByOID(ecKey.getCurveOID());
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//
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// byte[] enc = secKeyData[0];
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//
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// int pLen = ((((enc[0] & 0xff) << 8) + (enc[1] & 0xff)) + 7) / 8;
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// byte[] pEnc = new byte[pLen];
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//
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// System.arraycopy(enc, 2, pEnc, 0, pLen);
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//
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// byte[] keyEnc = new byte[enc[pLen + 2]];
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//
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// System.arraycopy(enc, 2 + pLen + 1, keyEnc, 0, keyEnc.length);
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//
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// Cipher c = helper.createKeyWrapper(ecKey.getSymmetricKeyAlgorithm());
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//
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// ECPoint S = x9Params.getCurve().decodePoint(pEnc).multiply(((ECSecretBCPGKey)privateKeyPacket).getX()).normalize();
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//
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// RFC6637KDFCalculator rfc6637KDFCalculator = new RFC6637KDFCalculator(digestCalculatorProviderBuilder.build().get(ecKey.getHashAlgorithm()), ecKey.getSymmetricKeyAlgorithm());
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// Key key = new SecretKeySpec(rfc6637KDFCalculator.createKey(ecKey.getCurveOID(), S, fingerprintCalculator.calculateFingerprint(pubKeyData)), "AESWrap");
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//
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// try
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// {
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// c.init(Cipher.UNWRAP_MODE, key);
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//
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// Key paddedSessionKey = c.unwrap(keyEnc, "Session", Cipher.SECRET_KEY);
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//
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// return PGPPad.unpadSessionData(paddedSessionKey.getEncoded());
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// }
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// catch (InvalidKeyException e)
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// {
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// throw new PGPException("error setting asymmetric cipher", e);
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// }
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// catch (NoSuchAlgorithmException e)
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// {
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// throw new PGPException("error setting asymmetric cipher", e);
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// }
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// }
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private byte[] decryptSessionData(int keyAlgorithm, byte[][] secKeyData, byte[] nfcDecrypted)
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throws PGPException
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{
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// Cipher c1 = helper.createPublicKeyCipher(keyAlgorithm);
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//
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// try
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// {
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// c1.init(Cipher.DECRYPT_MODE, privKey);
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// }
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// catch (InvalidKeyException e)
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// {
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// throw new PGPException("error setting asymmetric cipher", e);
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// }
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if (keyAlgorithm == PGPPublicKey.RSA_ENCRYPT
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|| keyAlgorithm == PGPPublicKey.RSA_GENERAL)
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{
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byte[] bi = secKeyData[0]; // encoded MPI
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if (nfcDecrypted != null) {
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// we already have the decrypted bytes from a previous execution, return this!
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return nfcDecrypted;
|
||||||
|
} else {
|
||||||
|
// catch this when decryptSessionData() is executed and divert digest to card,
|
||||||
|
// when doing the operation again reuse nfcDecrypted
|
||||||
|
throw new NfcInteractionNeeded(bi);
|
||||||
|
}
|
||||||
|
|
||||||
|
// c1.update(bi, 2, bi.length - 2);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
throw new PGPException("ElGamal not supported!");
|
||||||
|
|
||||||
|
// ElGamalKey k = (ElGamalKey)privKey;
|
||||||
|
// int size = (k.getParameters().getP().bitLength() + 7) / 8;
|
||||||
|
// byte[] tmp = new byte[size];
|
||||||
|
//
|
||||||
|
// byte[] bi = secKeyData[0]; // encoded MPI
|
||||||
|
// if (bi.length - 2 > size) // leading Zero? Shouldn't happen but...
|
||||||
|
// {
|
||||||
|
// c1.update(bi, 3, bi.length - 3);
|
||||||
|
// }
|
||||||
|
// else
|
||||||
|
// {
|
||||||
|
// System.arraycopy(bi, 2, tmp, tmp.length - (bi.length - 2), bi.length - 2);
|
||||||
|
// c1.update(tmp);
|
||||||
|
// }
|
||||||
|
//
|
||||||
|
// bi = secKeyData[1]; // encoded MPI
|
||||||
|
// for (int i = 0; i != tmp.length; i++)
|
||||||
|
// {
|
||||||
|
// tmp[i] = 0;
|
||||||
|
// }
|
||||||
|
//
|
||||||
|
// if (bi.length - 2 > size) // leading Zero? Shouldn't happen but...
|
||||||
|
// {
|
||||||
|
// c1.update(bi, 3, bi.length - 3);
|
||||||
|
// }
|
||||||
|
// else
|
||||||
|
// {
|
||||||
|
// System.arraycopy(bi, 2, tmp, tmp.length - (bi.length - 2), bi.length - 2);
|
||||||
|
// c1.update(tmp);
|
||||||
|
// }
|
||||||
|
}
|
||||||
|
|
||||||
|
// try
|
||||||
|
// {
|
||||||
|
// return c1.doFinal();
|
||||||
|
// }
|
||||||
|
// catch (Exception e)
|
||||||
|
// {
|
||||||
|
// throw new PGPException("exception decrypting session data", e);
|
||||||
|
// }
|
||||||
|
}
|
||||||
|
}
|
||||||
@ -31,10 +31,9 @@ import org.openintents.openpgp.OpenPgpError;
|
|||||||
import org.openintents.openpgp.OpenPgpSignatureResult;
|
import org.openintents.openpgp.OpenPgpSignatureResult;
|
||||||
import org.openintents.openpgp.util.OpenPgpApi;
|
import org.openintents.openpgp.util.OpenPgpApi;
|
||||||
import org.spongycastle.util.encoders.Hex;
|
import org.spongycastle.util.encoders.Hex;
|
||||||
import org.sufficientlysecure.keychain.nfc.NfcActivity;
|
import org.sufficientlysecure.keychain.ui.NfcActivity;
|
||||||
import org.sufficientlysecure.keychain.Constants;
|
import org.sufficientlysecure.keychain.Constants;
|
||||||
import org.sufficientlysecure.keychain.pgp.PassphraseCacheInterface;
|
import org.sufficientlysecure.keychain.pgp.PassphraseCacheInterface;
|
||||||
import org.sufficientlysecure.keychain.pgp.PassphraseCacheInterface.NoSecretKeyException;
|
|
||||||
import org.sufficientlysecure.keychain.pgp.PgpDecryptVerify;
|
import org.sufficientlysecure.keychain.pgp.PgpDecryptVerify;
|
||||||
import org.sufficientlysecure.keychain.provider.CachedPublicKeyRing;
|
import org.sufficientlysecure.keychain.provider.CachedPublicKeyRing;
|
||||||
import org.sufficientlysecure.keychain.provider.KeychainDatabase.Tables;
|
import org.sufficientlysecure.keychain.provider.KeychainDatabase.Tables;
|
||||||
|
|||||||
@ -30,7 +30,6 @@ import android.widget.TextView;
|
|||||||
|
|
||||||
import org.openintents.openpgp.OpenPgpSignatureResult;
|
import org.openintents.openpgp.OpenPgpSignatureResult;
|
||||||
import org.sufficientlysecure.keychain.R;
|
import org.sufficientlysecure.keychain.R;
|
||||||
import org.sufficientlysecure.keychain.nfc.NfcActivity;
|
|
||||||
import org.sufficientlysecure.keychain.pgp.KeyRing;
|
import org.sufficientlysecure.keychain.pgp.KeyRing;
|
||||||
import org.sufficientlysecure.keychain.service.results.DecryptVerifyResult;
|
import org.sufficientlysecure.keychain.service.results.DecryptVerifyResult;
|
||||||
import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
|
import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
|
||||||
|
|||||||
@ -2,10 +2,6 @@ package org.sufficientlysecure.keychain.ui;
|
|||||||
|
|
||||||
import android.content.Intent;
|
import android.content.Intent;
|
||||||
|
|
||||||
import org.sufficientlysecure.keychain.nfc.NfcActivity;
|
|
||||||
|
|
||||||
import java.util.Date;
|
|
||||||
|
|
||||||
public class EncryptActivity extends DrawerActivity {
|
public class EncryptActivity extends DrawerActivity {
|
||||||
|
|
||||||
public static final int REQUEST_CODE_PASSPHRASE = 0x00008001;
|
public static final int REQUEST_CODE_PASSPHRASE = 0x00008001;
|
||||||
|
|||||||
@ -0,0 +1,498 @@
|
|||||||
|
/**
|
||||||
|
* Copyright (c) 2013-2014 Philipp Jakubeit, Signe Rüsch, Dominik Schürmann
|
||||||
|
*
|
||||||
|
* Licensed under the Bouncy Castle License (MIT license). See LICENSE file for details.
|
||||||
|
*/
|
||||||
|
|
||||||
|
package org.sufficientlysecure.keychain.ui;
|
||||||
|
|
||||||
|
import android.annotation.TargetApi;
|
||||||
|
import android.app.PendingIntent;
|
||||||
|
import android.content.Intent;
|
||||||
|
import android.content.IntentFilter;
|
||||||
|
import android.nfc.NfcAdapter;
|
||||||
|
import android.nfc.Tag;
|
||||||
|
import android.nfc.tech.IsoDep;
|
||||||
|
import android.os.Build;
|
||||||
|
import android.os.Bundle;
|
||||||
|
import android.support.v7.app.ActionBarActivity;
|
||||||
|
import android.util.Log;
|
||||||
|
import android.view.WindowManager;
|
||||||
|
import android.widget.Toast;
|
||||||
|
|
||||||
|
import org.spongycastle.bcpg.HashAlgorithmTags;
|
||||||
|
import org.spongycastle.util.encoders.Hex;
|
||||||
|
import org.sufficientlysecure.keychain.R;
|
||||||
|
|
||||||
|
import java.io.IOException;
|
||||||
|
import java.util.Locale;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* This class provides a communication interface to OpenPGP applications on ISO SmartCard compliant
|
||||||
|
* NFC devices.
|
||||||
|
*
|
||||||
|
* For the full specs, see http://g10code.com/docs/openpgp-card-2.0.pdf
|
||||||
|
*/
|
||||||
|
@TargetApi(Build.VERSION_CODES.GINGERBREAD_MR1)
|
||||||
|
public class NfcActivity extends ActionBarActivity {
|
||||||
|
private static final String TAG = "Keychain";
|
||||||
|
|
||||||
|
// actions
|
||||||
|
public static final String ACTION_SIGN_HASH = "sign_hash";
|
||||||
|
public static final String ACTION_DECRYPT_SESSION_KEY = "decrypt_session_key";
|
||||||
|
|
||||||
|
// always
|
||||||
|
public static final String EXTRA_PIN = "pin";
|
||||||
|
// special extra for OpenPgpService
|
||||||
|
public static final String EXTRA_DATA = "data";
|
||||||
|
|
||||||
|
// sign
|
||||||
|
public static final String EXTRA_NFC_HASH_TO_SIGN = "nfc_hash";
|
||||||
|
public static final String EXTRA_NFC_HASH_ALGO = "nfc_hash_algo";
|
||||||
|
|
||||||
|
// decrypt
|
||||||
|
public static final String EXTRA_NFC_ENC_SESSION_KEY = "encrypted_session_key";
|
||||||
|
|
||||||
|
private Intent mServiceIntent;
|
||||||
|
|
||||||
|
private static final int TIMEOUT = 100000;
|
||||||
|
|
||||||
|
private NfcAdapter mNfcAdapter;
|
||||||
|
private IsoDep mIsoDep;
|
||||||
|
private String mAction;
|
||||||
|
|
||||||
|
private String mPin;
|
||||||
|
|
||||||
|
// sign
|
||||||
|
private byte[] mHashToSign;
|
||||||
|
private int mHashAlgo;
|
||||||
|
|
||||||
|
// decrypt
|
||||||
|
private byte[] mEncryptedSessionKey;
|
||||||
|
|
||||||
|
@Override
|
||||||
|
protected void onCreate(Bundle savedInstanceState) {
|
||||||
|
super.onCreate(savedInstanceState);
|
||||||
|
Log.d(TAG, "NfcActivity.onCreate");
|
||||||
|
|
||||||
|
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
|
||||||
|
|
||||||
|
setContentView(R.layout.nfc_activity);
|
||||||
|
|
||||||
|
Intent intent = getIntent();
|
||||||
|
Bundle data = intent.getExtras();
|
||||||
|
String action = intent.getAction();
|
||||||
|
|
||||||
|
if (ACTION_SIGN_HASH.equals(action)) {
|
||||||
|
mAction = action;
|
||||||
|
mPin = data.getString(EXTRA_PIN);
|
||||||
|
mHashToSign = data.getByteArray(EXTRA_NFC_HASH_TO_SIGN);
|
||||||
|
mHashAlgo = data.getInt(EXTRA_NFC_HASH_ALGO);
|
||||||
|
mServiceIntent = data.getParcelable(EXTRA_DATA);
|
||||||
|
|
||||||
|
Log.d(TAG, "NfcActivity mAction: " + mAction);
|
||||||
|
Log.d(TAG, "NfcActivity mPin: " + mPin);
|
||||||
|
Log.d(TAG, "NfcActivity mHashToSign as hex: " + getHex(mHashToSign));
|
||||||
|
Log.d(TAG, "NfcActivity mServiceIntent: " + mServiceIntent.toString());
|
||||||
|
} else if (ACTION_DECRYPT_SESSION_KEY.equals(action)) {
|
||||||
|
mAction = action;
|
||||||
|
mPin = data.getString(EXTRA_PIN);
|
||||||
|
mEncryptedSessionKey = data.getByteArray(EXTRA_NFC_ENC_SESSION_KEY);
|
||||||
|
mServiceIntent = data.getParcelable(EXTRA_DATA);
|
||||||
|
|
||||||
|
Log.d(TAG, "NfcActivity mAction: " + mAction);
|
||||||
|
Log.d(TAG, "NfcActivity mPin: " + mPin);
|
||||||
|
Log.d(TAG, "NfcActivity mEncryptedSessionKey as hex: " + getHex(mEncryptedSessionKey));
|
||||||
|
Log.d(TAG, "NfcActivity mServiceIntent: " + mServiceIntent.toString());
|
||||||
|
} else if (NfcAdapter.ACTION_TAG_DISCOVERED.equals(action)) {
|
||||||
|
Log.e(TAG, "This should not happen, but there is a bug in Android!");
|
||||||
|
|
||||||
|
toast("This should not happen, but there is a bug in Android! Clear all app tasks and start app from launcher again!");
|
||||||
|
finish();
|
||||||
|
} else {
|
||||||
|
Log.d(TAG, "Action not supported: " + action);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Called when the system is about to start resuming a previous activity,
|
||||||
|
* disables NFC Foreground Dispatch
|
||||||
|
*/
|
||||||
|
public void onPause() {
|
||||||
|
super.onPause();
|
||||||
|
Log.d(TAG, "NfcActivity.onPause");
|
||||||
|
|
||||||
|
disableNfcForegroundDispatch();
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Called when the activity will start interacting with the user,
|
||||||
|
* enables NFC Foreground Dispatch
|
||||||
|
*/
|
||||||
|
public void onResume() {
|
||||||
|
super.onResume();
|
||||||
|
Log.d(TAG, "NfcActivity.onResume");
|
||||||
|
|
||||||
|
enableNfcForegroundDispatch();
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* This activity is started as a singleTop activity.
|
||||||
|
* All new NFC Intents which are delivered to this activity are handled here
|
||||||
|
*/
|
||||||
|
public void onNewIntent(Intent intent) {
|
||||||
|
if (NfcAdapter.ACTION_TAG_DISCOVERED.equals(intent.getAction())) {
|
||||||
|
try {
|
||||||
|
handleNdefDiscoveredIntent(intent);
|
||||||
|
} catch (IOException e) {
|
||||||
|
Log.e(TAG, "Connection error!", e);
|
||||||
|
toast("Connection Error: " + e.getMessage());
|
||||||
|
setResult(RESULT_CANCELED, mServiceIntent);
|
||||||
|
finish();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/** Handle NFC communication and return a result.
|
||||||
|
*
|
||||||
|
* This method is called by onNewIntent above upon discovery of an NFC tag.
|
||||||
|
* It handles initialization and login to the application, subsequently
|
||||||
|
* calls either nfcCalculateSignature() or nfcDecryptSessionKey(), then
|
||||||
|
* finishes the activity with an appropiate result.
|
||||||
|
*
|
||||||
|
* On general communication, see also
|
||||||
|
* http://www.cardwerk.com/smartcards/smartcard_standard_ISO7816-4_annex-a.aspx
|
||||||
|
*
|
||||||
|
* References to pages are generally related to the OpenPGP Application
|
||||||
|
* on ISO SmartCard Systems specification.
|
||||||
|
*
|
||||||
|
*/
|
||||||
|
private void handleNdefDiscoveredIntent(Intent intent) throws IOException {
|
||||||
|
|
||||||
|
Tag detectedTag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
|
||||||
|
|
||||||
|
// Connect to the detected tag, setting a couple of settings
|
||||||
|
mIsoDep = IsoDep.get(detectedTag);
|
||||||
|
mIsoDep.setTimeout(TIMEOUT); // timeout is set to 100 seconds to avoid cancellation during calculation
|
||||||
|
mIsoDep.connect();
|
||||||
|
|
||||||
|
// SW1/2 0x9000 is the generic "ok" response, which we expect most of the time.
|
||||||
|
// See specification, page 51
|
||||||
|
String accepted = "9000";
|
||||||
|
|
||||||
|
// Command APDU (page 51) for SELECT FILE command (page 29)
|
||||||
|
String opening =
|
||||||
|
"00" // CLA
|
||||||
|
+ "A4" // INS
|
||||||
|
+ "04" // P1
|
||||||
|
+ "00" // P2
|
||||||
|
+ "06" // Lc (number of bytes)
|
||||||
|
+ "D27600012401" // Data (6 bytes)
|
||||||
|
+ "00"; // Le
|
||||||
|
if ( ! card(opening).equals(accepted)) { // activate connection
|
||||||
|
toast("Opening Error!");
|
||||||
|
setResult(RESULT_CANCELED, mServiceIntent);
|
||||||
|
finish();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Command APDU for VERIFY command (page 32)
|
||||||
|
String login =
|
||||||
|
"00" // CLA
|
||||||
|
+ "20" // INS
|
||||||
|
+ "00" // P1
|
||||||
|
+ "82" // P2 (PW1)
|
||||||
|
+ "06" // Lc TODO should be length of PIN?
|
||||||
|
+ Hex.toHexString(mPin.getBytes());
|
||||||
|
if ( ! card(login).equals(accepted)) { // login
|
||||||
|
toast("Wrong PIN!");
|
||||||
|
setResult(RESULT_CANCELED, mServiceIntent);
|
||||||
|
finish();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (ACTION_SIGN_HASH.equals(mAction)) {
|
||||||
|
// returns signed hash
|
||||||
|
byte[] signedHash = nfcCalculateSignature(mHashToSign, mHashAlgo);
|
||||||
|
|
||||||
|
if (signedHash == null) {
|
||||||
|
setResult(RESULT_CANCELED, mServiceIntent);
|
||||||
|
finish();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
Log.d(TAG, "NfcActivity signedHash as hex: " + getHex(signedHash));
|
||||||
|
|
||||||
|
// give data through for new service call
|
||||||
|
// OpenPgpApi.EXTRA_NFC_SIGNED_HASH
|
||||||
|
mServiceIntent.putExtra("nfc_signed_hash", signedHash);
|
||||||
|
setResult(RESULT_OK, mServiceIntent);
|
||||||
|
finish();
|
||||||
|
|
||||||
|
} else if (ACTION_DECRYPT_SESSION_KEY.equals(mAction)) {
|
||||||
|
byte[] decryptedSessionKey = nfcDecryptSessionKey(mEncryptedSessionKey);
|
||||||
|
|
||||||
|
// give data through for new service call
|
||||||
|
// OpenPgpApi.EXTRA_NFC_DECRYPTED_SESSION_KEY
|
||||||
|
mServiceIntent.putExtra("nfc_decrypted_session_key", decryptedSessionKey);
|
||||||
|
setResult(RESULT_OK, mServiceIntent);
|
||||||
|
finish();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Gets the user ID
|
||||||
|
*
|
||||||
|
* @return the user id as "name <email>"
|
||||||
|
* @throws java.io.IOException
|
||||||
|
*/
|
||||||
|
public String getUserId() throws IOException {
|
||||||
|
String info = "00CA006500";
|
||||||
|
String data = "00CA005E00";
|
||||||
|
return getName(card(info)) + " <" + (new String(Hex.decode(getDataField(card(data))))) + ">";
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Gets the long key ID
|
||||||
|
*
|
||||||
|
* @return the long key id (last 16 bytes of the fingerprint)
|
||||||
|
* @throws java.io.IOException
|
||||||
|
*/
|
||||||
|
public long getKeyId() throws IOException {
|
||||||
|
String keyId = getFingerprint().substring(24);
|
||||||
|
Log.d(TAG, "keyId: " + keyId);
|
||||||
|
return Long.parseLong(keyId, 16);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Gets the fingerprint of the signature key
|
||||||
|
*
|
||||||
|
* @return the fingerprint
|
||||||
|
* @throws java.io.IOException
|
||||||
|
*/
|
||||||
|
public String getFingerprint() throws IOException {
|
||||||
|
String data = "00CA006E00";
|
||||||
|
String fingerprint = card(data);
|
||||||
|
fingerprint = fingerprint.toLowerCase(Locale.ENGLISH); // better enforce lower case
|
||||||
|
fingerprint = fingerprint.substring(fingerprint.indexOf("c5") + 4, fingerprint.indexOf("c5") + 44);
|
||||||
|
|
||||||
|
Log.d(TAG, "fingerprint: " + fingerprint);
|
||||||
|
|
||||||
|
return fingerprint;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Calls to calculate the signature and returns the MPI value
|
||||||
|
*
|
||||||
|
* @param hash the hash for signing
|
||||||
|
* @return a big integer representing the MPI for the given hash
|
||||||
|
* @throws java.io.IOException
|
||||||
|
*/
|
||||||
|
public byte[] nfcCalculateSignature(byte[] hash, int hashAlgo) throws IOException {
|
||||||
|
|
||||||
|
// dsi, including Lc
|
||||||
|
String dsi;
|
||||||
|
|
||||||
|
Log.i(TAG, "Hash: " + hashAlgo);
|
||||||
|
switch (hashAlgo) {
|
||||||
|
case HashAlgorithmTags.SHA1:
|
||||||
|
if (hash.length != 20) {
|
||||||
|
throw new RuntimeException("Bad hash length (" + hash.length + ", expected 10!");
|
||||||
|
}
|
||||||
|
dsi = "30" // Lc TODO 0x30 == 48. shouldn't this be 35, for 15 header bytes + 20 hash?
|
||||||
|
+ "3021" // Tag/Length of Sequence, the 0x21 includes all following 33 bytes
|
||||||
|
+ "3009" // Tag/Length of Sequence, the 0x09 are the following header bytes
|
||||||
|
+ "0605" + "2B0E03021A" // OID of SHA1
|
||||||
|
+ "0500" // TLV coding of ZERO
|
||||||
|
+ "0414" + getHex(hash); // 0x14 are 20 hash bytes
|
||||||
|
break;
|
||||||
|
case HashAlgorithmTags.RIPEMD160:
|
||||||
|
if (hash.length != 20) {
|
||||||
|
throw new RuntimeException("Bad hash length (" + hash.length + ", expected 20!");
|
||||||
|
}
|
||||||
|
dsi = "303021300906052B2403020105000414" + getHex(hash);
|
||||||
|
break;
|
||||||
|
case HashAlgorithmTags.SHA224:
|
||||||
|
if (hash.length != 28) {
|
||||||
|
throw new RuntimeException("Bad hash length (" + hash.length + ", expected 28!");
|
||||||
|
}
|
||||||
|
dsi = "34302D300D06096086480165030402040500041C" + getHex(hash);
|
||||||
|
break;
|
||||||
|
case HashAlgorithmTags.SHA256:
|
||||||
|
if (hash.length != 32) {
|
||||||
|
throw new RuntimeException("Bad hash length (" + hash.length + ", expected 32!");
|
||||||
|
}
|
||||||
|
dsi = "333031300D060960864801650304020105000420" + getHex(hash);
|
||||||
|
break;
|
||||||
|
case HashAlgorithmTags.SHA384:
|
||||||
|
if (hash.length != 48) {
|
||||||
|
throw new RuntimeException("Bad hash length (" + hash.length + ", expected 48!");
|
||||||
|
}
|
||||||
|
dsi = "343041300D060960864801650304020205000430" + getHex(hash);
|
||||||
|
break;
|
||||||
|
case HashAlgorithmTags.SHA512:
|
||||||
|
if (hash.length != 64) {
|
||||||
|
throw new RuntimeException("Bad hash length (" + hash.length + ", expected 64!");
|
||||||
|
}
|
||||||
|
dsi = "343051300D060960864801650304020305000440" + getHex(hash);
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
throw new RuntimeException("Not supported hash algo!");
|
||||||
|
}
|
||||||
|
|
||||||
|
// Command APDU for PERFORM SECURITY OPERATION: COMPUTE DIGITAL SIGNATURE (page 37)
|
||||||
|
String apdu =
|
||||||
|
"002A9E9A" // CLA, INS, P1, P2
|
||||||
|
+ dsi // digital signature input
|
||||||
|
+ "00"; // Le
|
||||||
|
|
||||||
|
String response = card(apdu);
|
||||||
|
|
||||||
|
// split up response into signature and status
|
||||||
|
String status = response.substring(response.length()-4);
|
||||||
|
String signature = response.substring(0, response.length() - 4);
|
||||||
|
|
||||||
|
// while we are getting 0x61 status codes, retrieve more data
|
||||||
|
while (status.substring(0, 2).equals("61")) {
|
||||||
|
Log.d(TAG, "requesting more data, status " + status);
|
||||||
|
// Send GET RESPONSE command
|
||||||
|
response = card("00C00000" + status.substring(2));
|
||||||
|
status = response.substring(response.length()-4);
|
||||||
|
signature += response.substring(0, response.length()-4);
|
||||||
|
}
|
||||||
|
|
||||||
|
Log.d(TAG, "final response:" + status);
|
||||||
|
|
||||||
|
if ( ! status.equals("9000")) {
|
||||||
|
toast("Bad NFC response code: " + status);
|
||||||
|
return null;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Make sure the signature we received is actually the expected number of bytes long!
|
||||||
|
if (signature.length() != 512) {
|
||||||
|
toast("Bad signature length! Expected 256 bytes, got " + signature.length() / 2);
|
||||||
|
return null;
|
||||||
|
}
|
||||||
|
|
||||||
|
return Hex.decode(signature);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Calls to calculate the signature and returns the MPI value
|
||||||
|
*
|
||||||
|
* @param encryptedSessionKey the encoded session key
|
||||||
|
* @return the decoded session key
|
||||||
|
* @throws java.io.IOException
|
||||||
|
*/
|
||||||
|
public byte[] nfcDecryptSessionKey(byte[] encryptedSessionKey) throws IOException {
|
||||||
|
String firstApdu = "102a8086fe";
|
||||||
|
String secondApdu = "002a808603";
|
||||||
|
String le = "00";
|
||||||
|
|
||||||
|
byte[] one = new byte[254];
|
||||||
|
// leave out first byte:
|
||||||
|
System.arraycopy(encryptedSessionKey, 1, one, 0, one.length);
|
||||||
|
|
||||||
|
byte[] two = new byte[encryptedSessionKey.length - 1 - one.length];
|
||||||
|
for (int i = 0; i < two.length; i++) {
|
||||||
|
two[i] = encryptedSessionKey[i + one.length + 1];
|
||||||
|
}
|
||||||
|
|
||||||
|
String first = card(firstApdu + getHex(one));
|
||||||
|
String second = card(secondApdu + getHex(two) + le);
|
||||||
|
|
||||||
|
String decryptedSessionKey = getDataField(second);
|
||||||
|
|
||||||
|
Log.d(TAG, "decryptedSessionKey: " + decryptedSessionKey);
|
||||||
|
|
||||||
|
return Hex.decode(decryptedSessionKey);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Prints a message to the screen
|
||||||
|
*
|
||||||
|
* @param text the text which should be contained within the toast
|
||||||
|
*/
|
||||||
|
private void toast(String text) {
|
||||||
|
Toast.makeText(this, text, Toast.LENGTH_LONG).show();
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Receive new NFC Intents to this activity only by enabling foreground dispatch.
|
||||||
|
* This can only be done in onResume!
|
||||||
|
*/
|
||||||
|
public void enableNfcForegroundDispatch() {
|
||||||
|
mNfcAdapter = NfcAdapter.getDefaultAdapter(this);
|
||||||
|
Intent nfcI = new Intent(this, NfcActivity.class)
|
||||||
|
.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);
|
||||||
|
PendingIntent nfcPendingIntent = PendingIntent.getActivity(this, 0, nfcI, PendingIntent.FLAG_CANCEL_CURRENT);
|
||||||
|
IntentFilter[] writeTagFilters = new IntentFilter[]{
|
||||||
|
new IntentFilter(NfcAdapter.ACTION_TAG_DISCOVERED)
|
||||||
|
};
|
||||||
|
|
||||||
|
// https://code.google.com/p/android/issues/detail?id=62918
|
||||||
|
// maybe mNfcAdapter.enableReaderMode(); ?
|
||||||
|
try {
|
||||||
|
mNfcAdapter.enableForegroundDispatch(this, nfcPendingIntent, writeTagFilters, null);
|
||||||
|
} catch (IllegalStateException e) {
|
||||||
|
Log.i(TAG, "NfcForegroundDispatch Error!", e);
|
||||||
|
}
|
||||||
|
Log.d(TAG, "NfcForegroundDispatch has been enabled!");
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Disable foreground dispatch in onPause!
|
||||||
|
*/
|
||||||
|
public void disableNfcForegroundDispatch() {
|
||||||
|
mNfcAdapter.disableForegroundDispatch(this);
|
||||||
|
Log.d(TAG, "NfcForegroundDispatch has been disabled!");
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Gets the name of the user out of the raw card output regarding card holder related data
|
||||||
|
*
|
||||||
|
* @param name the raw card holder related data from the card
|
||||||
|
* @return the name given in this data
|
||||||
|
*/
|
||||||
|
public String getName(String name) {
|
||||||
|
String slength;
|
||||||
|
int ilength;
|
||||||
|
name = name.substring(6);
|
||||||
|
slength = name.substring(0, 2);
|
||||||
|
ilength = Integer.parseInt(slength, 16) * 2;
|
||||||
|
name = name.substring(2, ilength + 2);
|
||||||
|
name = (new String(Hex.decode(name))).replace('<', ' ');
|
||||||
|
return (name);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Reduces the raw data from the card by four characters
|
||||||
|
*
|
||||||
|
* @param output the raw data from the card
|
||||||
|
* @return the data field of that data
|
||||||
|
*/
|
||||||
|
private String getDataField(String output) {
|
||||||
|
return output.substring(0, output.length() - 4);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Communicates with the OpenPgpCard via the APDU
|
||||||
|
*
|
||||||
|
* @param hex the hexadecimal APDU
|
||||||
|
* @return The answer from the card
|
||||||
|
* @throws java.io.IOException throws an exception if something goes wrong
|
||||||
|
*/
|
||||||
|
public String card(String hex) throws IOException {
|
||||||
|
return getHex(mIsoDep.transceive(Hex.decode(hex)));
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Converts a byte array into an hex string
|
||||||
|
*
|
||||||
|
* @param raw the byte array representation
|
||||||
|
* @return the hexadecimal string representation
|
||||||
|
*/
|
||||||
|
public static String getHex(byte[] raw) {
|
||||||
|
return new String(Hex.encode(raw));
|
||||||
|
}
|
||||||
|
}
|
||||||
BIN
OpenKeychain/src/main/res/drawable/yubikey_neo.png
Normal file
BIN
OpenKeychain/src/main/res/drawable/yubikey_neo.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 129 KiB |
30
OpenKeychain/src/main/res/layout/nfc_activity.xml
Normal file
30
OpenKeychain/src/main/res/layout/nfc_activity.xml
Normal file
@ -0,0 +1,30 @@
|
|||||||
|
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
|
||||||
|
xmlns:tools="http://schemas.android.com/tools"
|
||||||
|
android:layout_width="match_parent"
|
||||||
|
android:layout_height="match_parent"
|
||||||
|
android:paddingLeft="16dp"
|
||||||
|
android:paddingRight="16dp"
|
||||||
|
android:paddingTop="8dp"
|
||||||
|
android:paddingBottom="8dp"
|
||||||
|
android:background="#FFFFFFFF"
|
||||||
|
tools:context="org.sufficientlysecure.keychain.nfc.NfcActivityFull">
|
||||||
|
|
||||||
|
<TextView
|
||||||
|
android:text="Hold Yubikey against the back of your device!"
|
||||||
|
android:layout_width="wrap_content"
|
||||||
|
android:layout_height="wrap_content"
|
||||||
|
android:textAppearance="@android:style/TextAppearance.Large"
|
||||||
|
android:id="@+id/textView"
|
||||||
|
android:gravity="center"
|
||||||
|
android:layout_gravity="center" />
|
||||||
|
|
||||||
|
<ImageView
|
||||||
|
android:layout_width="wrap_content"
|
||||||
|
android:layout_height="wrap_content"
|
||||||
|
android:id="@+id/imageView"
|
||||||
|
android:src="@drawable/yubikey_neo"
|
||||||
|
android:layout_alignParentRight="true"
|
||||||
|
android:layout_alignParentEnd="true"
|
||||||
|
android:layout_below="@+id/textView" />
|
||||||
|
|
||||||
|
</RelativeLayout>
|
||||||
2
extern/openpgp-card-nfc-lib
vendored
2
extern/openpgp-card-nfc-lib
vendored
@ -1 +1 @@
|
|||||||
Subproject commit 6bc1f1240f9700e5bd378f02540360ef20dea629
|
Subproject commit dc2701e415aa01c811b093f152409a231475e506
|
||||||
@ -13,5 +13,4 @@ include ':extern:SuperToasts:supertoasts'
|
|||||||
include ':extern:minidns'
|
include ':extern:minidns'
|
||||||
include ':extern:KeybaseLib:Lib'
|
include ':extern:KeybaseLib:Lib'
|
||||||
include ':extern:TokenAutoComplete:library'
|
include ':extern:TokenAutoComplete:library'
|
||||||
include ':extern:openpgp-card-nfc-lib:library'
|
|
||||||
include ':extern:safeslinger-exchange'
|
include ':extern:safeslinger-exchange'
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user