beemdevelopment/Aegis · error · DatabaseImporterException

unsupported otp type:

Error message

unsupported otp type:

What it means

During andOTP (JSON, unencrypted) import, each entry's "type" field is mapped to an OTP info class (totp, hotp, steam). If the type string is anything else, the importer throws DatabaseImporterException because Aegis has no representation for that OTP scheme.

Solutions

  1. Update Aegis to the latest version, which may support the new type
  2. Inspect the JSON entry's "type" field and manually re-add that entry in Aegis
  3. If a type was renamed (e.g. totp->timer), edit the backup JSON to a supported value
  4. File an issue/PR with Aegis to add support for the new otp type

Example fix

// before
default:
    throw new DatabaseImporterException("unsupported otp type: " + type);
// after
default:
    if (type.equals("motp")) {
        // map or skip with a warning instead of aborting
        continue;
    }
    throw new DatabaseImporterException("unsupported otp type: " + type);
Defensive patterns

Strategy: try-catch

Validate before calling

JSONObject obj = new JSONObject(json);
String type = obj.getString("type");
if (!Set.of("totp","hotp","steam").contains(type)) {
    // skip or warn
}

Try / catch

try {
    entry = importer.convertEntry(obj);
} catch (DatabaseImporterEntryException e) {
    log.warn("Skipped entry: " + e.getMessage());
}

Prevention

When it happens

Trigger: An andOTP JSON export contains an entry with "type" not equal to "totp", "hotp", or "steam" — e.g. exported by a newer andOTP version with a new algorithm type, or a hand-edited file.

Common situations: Version drift between andOTP export schema and the Aegis importer; manually edited backup JSON; a fork of andOTP introducing new entry types.

Related errors

AI-assisted analysis of beemdevelopment/Aegis@d6f4e5925a (2026-09-08). Data as JSON: /api/errors/b4077a61519a0136. Report an issue: GitHub.

Appendix: source

Thrown at app/src/main/java/com/beemdevelopment/aegis/importers/AndOtpImporter.java:249

            try {
                String type = obj.getString("type").toLowerCase(Locale.ROOT);
                String algo = obj.getString("algorithm");
                int digits = obj.getInt("digits");
                byte[] secret = Base32.decode(obj.getString("secret"));

                OtpInfo info;
                switch (type) {
                    case "hotp":
                        info = new HotpInfo(secret, algo, digits, obj.getLong("counter"));
                        break;
                    case "totp":
                        info = new TotpInfo(secret, algo, digits, obj.getInt("period"));
                        break;
                    case "steam":
                        info = new SteamInfo(secret, algo, digits, obj.optInt("period", TotpInfo.DEFAULT_PERIOD));
                        break;
                    default:
                        throw new DatabaseImporterException("unsupported otp type: " + type);
                }

                String name;
                String issuer = "";

                if (obj.has("issuer")) {
                    name = obj.getString("label");
                    issuer = obj.getString("issuer");
                } else {
                    String[] parts = obj.getString("label").split(" - ");
                    if (parts.length > 1) {
                        issuer = parts[0];
                        name = parts[1];
                    } else {
                        name = parts[0];
                    }
                }

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