Examples with PublicKey im.actor.core.modules.encryption.entity.PublicKey used on opensource projects

Example 1 with PublicKey

use of im.actor.core.modules.encryption.entity.PublicKey in project actor-platform by actorapp.

the class KeyManagerActor method fetchUserPreKey.

/**
     * Fetching user's random pre key
     *
     * @param uid        User's id
     * @param keyGroupId User's key group id
     */
private Promise<PublicKey> fetchUserPreKey(final int uid, final int keyGroupId) {
    return pickUserGroup(uid, keyGroupId).flatMap(new Function<Tuple2<UserKeysGroup, UserKeys>, Promise<PublicKey>>() {

        @Override
        public Promise<PublicKey> apply(final Tuple2<UserKeysGroup, UserKeys> keyGroups) {
            return api(new RequestLoadPrePublicKeys(new ApiUserOutPeer(uid, getUser(uid).getAccessHash()), keyGroupId)).map(new Function<ResponsePublicKeys, PublicKey>() {

                @Override
                public PublicKey apply(ResponsePublicKeys response) {
                    if (response.getPublicKey().size() == 0) {
                        throw new RuntimeException("User doesn't have pre keys");
                    }
                    ApiEncryptionKey key = response.getPublicKey().get(0);
                    ApiEncryptionKeySignature sig = null;
                    for (ApiEncryptionKeySignature s : response.getSignatures()) {
                        if (s.getKeyId() == key.getKeyId() && "Ed25519".equals(s.getSignatureAlg())) {
                            sig = s;
                            break;
                        }
                    }
                    if (sig == null) {
                        throw new RuntimeException("Unable to find public key on server");
                    }
                    byte[] keyHash = RatchetKeySignature.hashForSignature(key.getKeyId(), key.getKeyAlg(), key.getKeyMaterial());
                    if (!Curve25519.verifySignature(keyGroups.getT1().getIdentityKey().getPublicKey(), keyHash, sig.getSignature())) {
                        throw new RuntimeException("Key signature does not isMatch");
                    }
                    return new PublicKey(key.getKeyId(), key.getKeyAlg(), key.getKeyMaterial());
                }
            });
        }
    });
}

Example 2 with PublicKey

use of im.actor.core.modules.encryption.entity.PublicKey in project actor-platform by actorapp.

the class KeyManagerActor method validateUserKeysGroup.

//
// Helper methods
//
private UserKeysGroup validateUserKeysGroup(int uid, ApiEncryptionKeyGroup keyGroup) {
    if (!"curve25519".equals(keyGroup.getIdentityKey().getKeyAlg())) {
        // Anything other than curve25519 is not supported
        Log.w(TAG, "(uid:" + uid + ") Unsupported identity key alg " + keyGroup.getIdentityKey().getKeyAlg());
        return null;
    }
    PublicKey identity = new PublicKey(keyGroup.getIdentityKey().getKeyId(), keyGroup.getIdentityKey().getKeyAlg(), keyGroup.getIdentityKey().getKeyMaterial());
    ArrayList<PublicKey> keys = new ArrayList<PublicKey>();
    key_loop: for (ApiEncryptionKey key : keyGroup.getKeys()) {
        //
        for (ApiEncryptionKeySignature sig : keyGroup.getSignatures()) {
            if (!sig.getSignatureAlg().equals("Ed25519")) {
                // Anything other than Ed25519 is not supported
                Log.w(TAG, "(uid:" + uid + ") Unsupported signature algorithm " + sig.getSignatureAlg());
                continue;
            }
            if (sig.getKeyId() != key.getKeyId()) {
                continue;
            }
            byte[] keyForSign = RatchetKeySignature.hashForSignature(key.getKeyId(), key.getKeyAlg(), key.getKeyMaterial());
            if (!Curve25519.verifySignature(identity.getPublicKey(), keyForSign, sig.getSignature())) {
                Log.w(TAG, "(uid:" + uid + ") Unable to verify signature for " + Crypto.keyHash(key.getKeyMaterial()) + " key");
                continue key_loop;
            }
        }
        //
        // Adding key to collection
        //
        keys.add(new PublicKey(key.getKeyId(), key.getKeyAlg(), key.getKeyMaterial()));
    }
    if (keys.size() == 0) {
        Log.w(TAG, "(uid:" + uid + ") No valid keys in key group #" + keyGroup.getKeyGroupId());
    }
    return new UserKeysGroup(keyGroup.getKeyGroupId(), identity, keys.toArray(new PublicKey[keys.size()]), new PublicKey[0]);
}

Example 3 with PublicKey

use of im.actor.core.modules.encryption.entity.PublicKey in project actor-platform by actorapp.

the class KeyManagerActor method fetchUserPreKey.

/**
     * Fetching user's pre key by key id
     *
     * @param uid        User's id
     * @param keyGroupId User's key group id
     * @param keyId      Key id
     */
private Promise<PublicKey> fetchUserPreKey(final int uid, final int keyGroupId, final long keyId) {
    User user = users().getValue(uid);
    if (user == null) {
        throw new RuntimeException("Unable to find user #" + uid);
    }
    return pickUserGroup(uid, keyGroupId).flatMap(new Function<Tuple2<UserKeysGroup, UserKeys>, Promise<PublicKey>>() {

        @Override
        public Promise<PublicKey> apply(final Tuple2<UserKeysGroup, UserKeys> keysGroup) {
            for (PublicKey p : keysGroup.getT1().getEphemeralKeys()) {
                if (p.getKeyId() == keyId) {
                    return Promise.success(p);
                }
            }
            //
            // Downloading pre key
            //
            ArrayList<Long> ids = new ArrayList<Long>();
            ids.add(keyId);
            final UserKeysGroup finalKeysGroup = keysGroup.getT1();
            return api(new RequestLoadPublicKey(new ApiUserOutPeer(uid, getUser(uid).getAccessHash()), keyGroupId, ids)).map(new Function<ResponsePublicKeys, PublicKey>() {

                @Override
                public PublicKey apply(ResponsePublicKeys responsePublicKeys) {
                    if (responsePublicKeys.getPublicKey().size() == 0) {
                        throw new RuntimeException("Unable to find public key on server");
                    }
                    ApiEncryptionKeySignature sig = null;
                    for (ApiEncryptionKeySignature s : responsePublicKeys.getSignatures()) {
                        if (s.getKeyId() == keyId && "Ed25519".equals(s.getSignatureAlg())) {
                            sig = s;
                            break;
                        }
                    }
                    if (sig == null) {
                        throw new RuntimeException("Unable to find public key on server");
                    }
                    ApiEncryptionKey key = responsePublicKeys.getPublicKey().get(0);
                    byte[] keyHash = RatchetKeySignature.hashForSignature(key.getKeyId(), key.getKeyAlg(), key.getKeyMaterial());
                    if (!Curve25519.verifySignature(keysGroup.getT1().getIdentityKey().getPublicKey(), keyHash, sig.getSignature())) {
                        throw new RuntimeException("Key signature does not isMatch");
                    }
                    PublicKey pkey = new PublicKey(keyId, key.getKeyAlg(), key.getKeyMaterial());
                    UserKeysGroup userKeysGroup = finalKeysGroup.addPublicKey(pkey);
                    cacheUserKeys(keysGroup.getT2().removeUserKeyGroup(userKeysGroup.getKeyGroupId()).addUserKeyGroup(userKeysGroup));
                    return pkey;
                }
            });
        }
    });
}