issuerUniqueID = null,
          subjectUniqueID = null,
          extensions = extensions(),
        )

      // Signature.
      val signature =
        Signature.getInstance(tbsCertificate.signatureAlgorithmName).run {
          initSign(issuerKeyPair.private)
          update(CertificateAdapters.tbsCertificate.toDer(tbsCertificate).toByteArray())
          sign().toByteString()
        }

    Algorithm(String algorithmName, HashFunction hashFn) {
      this.algorithmName = algorithmName;
      this.hashFn = hashFn;
    }

    MessageDigest getMessageDigest() {
      try {
        return MessageDigest.getInstance(algorithmName);
      } catch (NoSuchAlgorithmException e) {
        throw new AssertionError(e);
      }
    }

    HashFunction getHashFunction() {
      return hashFn;
    }
  }

    Algorithm(String algorithmName, HashFunction hashFn) {
      this.algorithmName = algorithmName;
      this.hashFn = hashFn;
    }

    MessageDigest getMessageDigest() {
      try {
        return MessageDigest.getInstance(algorithmName);
      } catch (NoSuchAlgorithmException e) {
        throw new AssertionError(e);
      }
    }

    HashFunction getHashFunction() {
      return hashFn;
    }
  }

 * yyaoEufLKVXhrTQhRfodTeigi4RX
 * -----END CERTIFICATE-----
 * ```
 */
fun String.decodeCertificatePem(): X509Certificate {
  try {
    val certificateFactory = CertificateFactory.getInstance("X.509")
    val certificates =
      certificateFactory
        .generateCertificates(
          Buffer().writeUtf8(this).inputStream(),
        )

    return certificates.single() as X509Certificate

    //                                                                             =======
    @Override
    public GroupDbm asDBMeta() {
        return GroupDbm.getInstance();
    }

    @Override
    public String asTableDbName() {
        return "group";
    }

    // ===================================================================================

        byte[] dataHmac = getHmac(dataChecksum, codeHmac);
        SecretKeySpec dataKey = new SecretKeySpec(dataHmac, KerberosConstants.RC4_ALGORITHM);

        cipher = Cipher.getInstance(KerberosConstants.RC4_ALGORITHM);
        cipher.init(Cipher.DECRYPT_MODE, dataKey);

        int plainDataLength = data.length - KerberosConstants.CHECKSUM_SIZE;

    //                                                                             =======
    @Override
    public FavoriteLogDbm asDBMeta() {
        return FavoriteLogDbm.getInstance();
    }

    @Override
    public String asTableDbName() {
        return "favorite_log";
    }

    @Override
    public boolean hasSpecifiedColumn() {
        return _specification != null;
    }

    //                                                                             =======
    @Override
    public CrawlingInfoDbm asDBMeta() {
        return CrawlingInfoDbm.getInstance();
    }

    @Override
    public String asTableDbName() {
        return "crawling_info";
    }

    @Override
    public boolean hasSpecifiedColumn() {
        return _specification != null;
    }

    //                                                                             =======
    @Override
    public ThumbnailQueueDbm asDBMeta() {
        return ThumbnailQueueDbm.getInstance();
    }

    @Override
    public String asTableDbName() {
        return "thumbnail_queue";
    }

    // ===================================================================================

            throw new IllegalStateException("Signing key has been wiped");
        }
        Mac m;
        if (this.provider != null) {
            m = Mac.getInstance(this.algorithmName, this.provider);
        } else {
            m = Mac.getInstance(this.algorithmName);
        }
        m.init(new SecretKeySpec(this.signingKey, "HMAC"));
        return m;
    }

    /**
     * {@inheritDoc}
     *