Examples with ECKeyPair org.whispersystems.libsignal.ecc.ECKeyPair used on opensource projects

Example 11 with ECKeyPair

use of org.whispersystems.libsignal.ecc.ECKeyPair in project Signal-Android by WhisperSystems.

the class IdentityKeyUtil method generateIdentityKeyPair.

public static IdentityKeyPair generateIdentityKeyPair() {
    ECKeyPair djbKeyPair = Curve.generateKeyPair();
    IdentityKey djbIdentityKey = new IdentityKey(djbKeyPair.getPublicKey());
    ECPrivateKey djbPrivateKey = djbKeyPair.getPrivateKey();
    return new IdentityKeyPair(djbIdentityKey, djbPrivateKey);
}

Example 12 with ECKeyPair

use of org.whispersystems.libsignal.ecc.ECKeyPair in project Signal-Android by WhisperSystems.

the class PreKeyUtil method generateLastResortKey.

public static PreKeyRecord generateLastResortKey(Context context) {
    PreKeyStore preKeyStore = new TextSecurePreKeyStore(context);
    if (preKeyStore.containsPreKey(Medium.MAX_VALUE)) {
        try {
            return preKeyStore.loadPreKey(Medium.MAX_VALUE);
        } catch (InvalidKeyIdException e) {
            Log.w("PreKeyUtil", e);
            preKeyStore.removePreKey(Medium.MAX_VALUE);
        }
    }
    ECKeyPair keyPair = Curve.generateKeyPair();
    PreKeyRecord record = new PreKeyRecord(Medium.MAX_VALUE, keyPair);
    preKeyStore.storePreKey(Medium.MAX_VALUE, record);
    return record;
}

Example 13 with ECKeyPair

use of org.whispersystems.libsignal.ecc.ECKeyPair in project Signal-Android by signalapp.

the class PreKeyUtil method generateSignedPreKey.

public static synchronized SignedPreKeyRecord generateSignedPreKey(Context context, IdentityKeyPair identityKeyPair, boolean active) {
    try {
        SignedPreKeyStore signedPreKeyStore = new TextSecurePreKeyStore(context);
        int signedPreKeyId = TextSecurePreferences.getNextSignedPreKeyId(context);
        ECKeyPair keyPair = Curve.generateKeyPair();
        byte[] signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
        SignedPreKeyRecord record = new SignedPreKeyRecord(signedPreKeyId, System.currentTimeMillis(), keyPair, signature);
        signedPreKeyStore.storeSignedPreKey(signedPreKeyId, record);
        TextSecurePreferences.setNextSignedPreKeyId(context, (signedPreKeyId + 1) % Medium.MAX_VALUE);
        if (active) {
            TextSecurePreferences.setActiveSignedPreKeyId(context, signedPreKeyId);
        }
        return record;
    } catch (InvalidKeyException e) {
        throw new AssertionError(e);
    }
}

Example 14 with ECKeyPair

use of org.whispersystems.libsignal.ecc.ECKeyPair in project Signal-Android by signalapp.

the class PreKeyUtil method generatePreKeys.

public static synchronized List<PreKeyRecord> generatePreKeys(Context context) {
    PreKeyStore preKeyStore = new TextSecurePreKeyStore(context);
    List<PreKeyRecord> records = new LinkedList<>();
    int preKeyIdOffset = TextSecurePreferences.getNextPreKeyId(context);
    for (int i = 0; i < BATCH_SIZE; i++) {
        int preKeyId = (preKeyIdOffset + i) % Medium.MAX_VALUE;
        ECKeyPair keyPair = Curve.generateKeyPair();
        PreKeyRecord record = new PreKeyRecord(preKeyId, keyPair);
        preKeyStore.storePreKey(preKeyId, record);
        records.add(record);
    }
    TextSecurePreferences.setNextPreKeyId(context, (preKeyIdOffset + BATCH_SIZE + 1) % Medium.MAX_VALUE);
    return records;
}

Example 15 with ECKeyPair

use of org.whispersystems.libsignal.ecc.ECKeyPair in project Signal-Android by signalapp.

the class OneTimePreKeyDatabase method getPreKey.

@Nullable
public PreKeyRecord getPreKey(int keyId) {
    SQLiteDatabase database = databaseHelper.getReadableDatabase();
    try (Cursor cursor = database.query(TABLE_NAME, null, KEY_ID + " = ?", new String[] { String.valueOf(keyId) }, null, null, null)) {
        if (cursor != null && cursor.moveToFirst()) {
            try {
                ECPublicKey publicKey = Curve.decodePoint(Base64.decode(cursor.getString(cursor.getColumnIndexOrThrow(PUBLIC_KEY))), 0);
                ECPrivateKey privateKey = Curve.decodePrivatePoint(Base64.decode(cursor.getString(cursor.getColumnIndexOrThrow(PRIVATE_KEY))));
                return new PreKeyRecord(keyId, new ECKeyPair(publicKey, privateKey));
            } catch (InvalidKeyException | IOException e) {
                Log.w(TAG, e);
            }
        }
    }
    return null;
}