function getPrivateKeyFromSession getPrivateKeyFromSession(sessionToken: string,wrappedDataKey: WrappedKey,wrappedPrivateKey: KeyEncrypted,): Promise<CryptoKey> Derive the private key from session credentials Used to decrypt attendee PII in admin views Results are cached per session token for 10 seconds Parameters sessionToken: string wrappedDataKey: WrappedKey wrappedPrivateKey: KeyEncrypted Return Type Promise<CryptoKey>