diff options
Diffstat (limited to 'OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/affirmation/Affirmation.java')
-rw-r--r-- | OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/affirmation/Affirmation.java | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/affirmation/Affirmation.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/affirmation/Affirmation.java deleted file mode 100644 index 892231cbe..000000000 --- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/affirmation/Affirmation.java +++ /dev/null @@ -1,163 +0,0 @@ -package org.sufficientlysecure.keychain.pgp.affirmation; - -import org.spongycastle.bcpg.UserAttributeSubpacket; -import org.spongycastle.util.BigIntegers; -import org.spongycastle.util.Strings; -import org.spongycastle.util.encoders.Hex; -import org.sufficientlysecure.keychain.Constants; -import org.sufficientlysecure.keychain.util.Log; - -import java.math.BigInteger; -import java.net.URI; -import java.security.SecureRandom; -import java.util.Arrays; -import java.util.HashMap; -import java.util.HashSet; -import java.util.Iterator; -import java.util.Map.Entry; -import java.util.Set; - -public class Affirmation { - - protected byte[] mData; - public final String mNonce; - public final URI mSubUri; - final Set<String> mFlags; - final HashMap<String,String> mParams; - - protected Affirmation(byte[] data, String nonce, Set<String> flags, - HashMap<String,String> params, URI subUri) { - if ( ! nonce.matches("[0-9a-zA-Z]+")) { - throw new AssertionError("bug: nonce must be hexstring!"); - } - - mData = data; - mNonce = nonce; - mFlags = flags; - mParams = params; - mSubUri = subUri; - } - - Affirmation(String nonce, Set<String> flags, - HashMap<String,String> params, URI subUri) { - this(null, nonce, flags, params, subUri); - } - - public byte[] encode() { - if (mData != null) { - return mData; - } - - StringBuilder b = new StringBuilder(); - b.append("pgpid:"); - - // add flags - if (mFlags != null) { - boolean first = true; - for (String flag : mFlags) { - if (!first) { - b.append(";"); - } - first = false; - b.append(flag); - } - } - - // add parameters - if (mParams != null) { - boolean first = true; - Iterator<Entry<String, String>> it = mParams.entrySet().iterator(); - while (it.hasNext()) { - if (!first) { - b.append(";"); - } - first = false; - Entry<String, String> entry = it.next(); - b.append(entry.getKey()).append("=").append(entry.getValue()); - } - } - - b.append("@"); - b.append(mSubUri); - - byte[] nonceBytes = Hex.decode(mNonce); - byte[] data = Strings.toUTF8ByteArray(b.toString()); - - byte[] result = new byte[data.length+12]; - System.arraycopy(nonceBytes, 0, result, 0, 12); - System.arraycopy(data, 0, result, 12, result.length); - - return result; - } - - /** This method parses an affirmation from a UserAttributeSubpacket, or returns null if the - * subpacket can not be parsed as a valid affirmation. - */ - public static Affirmation parseAffirmation(UserAttributeSubpacket subpacket) { - if (subpacket.getType() != 100) { - return null; - } - - byte[] data = subpacket.getData(); - String nonce = Hex.toHexString(data, 0, 12); - - try { - return parseUri(nonce, Strings.fromUTF8ByteArray(Arrays.copyOfRange(data, 12, data.length))); - - } catch (IllegalArgumentException e) { - Log.e(Constants.TAG, "error parsing uri in (suspected) affirmation packet"); - return null; - } - } - - protected static Affirmation parseUri (String nonce, String uriString) { - URI uri = URI.create(uriString); - - if ("pgpid".equals(uri.getScheme())) { - Log.e(Constants.TAG, "unknown uri scheme in (suspected) affirmation packet"); - return null; - } - - if (!uri.isOpaque()) { - Log.e(Constants.TAG, "non-opaque uri in (suspected) affirmation packet"); - return null; - } - - String specific = uri.getSchemeSpecificPart(); - if (!specific.contains("@")) { - Log.e(Constants.TAG, "unknown uri scheme in affirmation packet"); - return null; - } - - String[] pieces = specific.split("@", 2); - URI subUri = URI.create(pieces[1]); - - Set<String> flags = new HashSet<String>(); - HashMap<String,String> params = new HashMap<String,String>(); - { - String[] rawParams = pieces[0].split(";"); - for (String param : rawParams) { - String[] p = param.split("=", 2); - if (p.length == 1) { - flags.add(param); - } else { - params.put(p[0], p[1]); - } - } - } - - return new Affirmation(nonce, flags, params, subUri); - - } - - public static String generateNonce() { - // TODO make this actually random - // byte[] data = new byte[96]; - // new SecureRandom().nextBytes(data); - // return Hex.toHexString(data); - - // debug for now - return "0123456789ABCDEF01234567"; - } - -} |