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The UnboundID LDAP SDK for Java is a fast, comprehensive, and easy-to-use Java API for communicating with LDAP directory servers and performing related tasks like reading and writing LDIF, encoding and decoding data using base64 and ASN.1 BER, and performing secure communication. This package contains the Standard Edition of the LDAP SDK, which is a complete, general-purpose library for communicating with LDAPv3 directory servers.

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/*
 * Copyright 2017-2023 Ping Identity Corporation
 * All Rights Reserved.
 */
/*
 * Copyright 2017-2023 Ping Identity Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/*
 * Copyright (C) 2017-2023 Ping Identity Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License (GPLv2 only)
 * or the terms of the GNU Lesser General Public License (LGPLv2.1 only)
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see .
 */
package com.unboundid.util.ssl.cert;



import com.unboundid.util.NotNull;
import com.unboundid.util.Nullable;
import com.unboundid.util.OID;
import com.unboundid.util.ThreadSafety;
import com.unboundid.util.ThreadSafetyLevel;



/**
 * This enum defines a set of algorithm names and OIDs.
 */
@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
public enum SignatureAlgorithmIdentifier
{
  /**
   * The algorithm identifier for the MD2 message digest with RSA encryption.
   * This identifier is defined in RFC 3279 section 2.2.1.
   */
  MD2_WITH_RSA("1.2.840.113549.1.1.2", "MD2withRSA", "MD2 with RSA"),



  /**
   * The algorithm identifier for the MD5 message digest with RSA encryption.
   * This identifier is defined in RFC 3279 section 2.2.1.
   */
  MD5_WITH_RSA("1.2.840.113549.1.1.4", "MD5withRSA", "MD5 with RSA"),



  /**
   * The algorithm identifier for the SHA-1 message digest with RSA encryption.
   * This identifier is defined in RFC 3279 section 2.2.1.
   */
  SHA_1_WITH_RSA("1.2.840.113549.1.1.5", "SHA1withRSA", "SHA-1 with RSA"),



  /**
   * The algorithm identifier for the 224-bit SHA-2 message digest with RSA
   * encryption.  This identifier is defined in RFC 4055 section 5.
   */
  SHA_224_WITH_RSA("1.2.840.113549.1.1.14", "SHA224withRSA",
       "SHA-224 with RSA"),



  /**
   * The algorithm identifier for the 256-bit SHA-2 message digest with RSA
   * encryption.  This identifier is defined in RFC 4055 section 5.
   */
  SHA_256_WITH_RSA("1.2.840.113549.1.1.11", "SHA256withRSA",
       "SHA-256 with RSA"),



  /**
   * The algorithm identifier for the 384-bit SHA-2 message digest with RSA
   * encryption.  This identifier is defined in RFC 4055 section 5.
   */
  SHA_384_WITH_RSA("1.2.840.113549.1.1.12", "SHA384withRSA",
       "SHA-384 with RSA"),



  /**
   * The algorithm identifier for the 512-bit SHA-2 message digest with RSA
   * encryption.  This identifier is defined in RFC 4055 section 5.
   */
  SHA_512_WITH_RSA("1.2.840.113549.1.1.13", "SHA512withRSA",
       "SHA-512 with RSA"),



  /**
   * The algorithm identifier for the SHA-1 message digest with the DSA
   * signature algorithm.  This identifier is defined in RFC 3279 section 2.2.2.
   */
  SHA_1_WITH_DSA("1.2.840.10040.4.3", "SHA1withDSA", "SHA-1 with DSA"),



  /**
   * The algorithm identifier for the 224-bit SHA-2 message digest with the DSA
   * signature algorithm.  This identifier is defined in RFC 5758 section 3.1.
   */
  SHA_224_WITH_DSA("2.16.840.1.101.3.4.3.1", "SHA224withDSA",
       "SHA-224 with DSA"),



  /**
   * The algorithm identifier for the 256-bit SHA-2 message digest with the DSA
   * signature algorithm.  This identifier is defined in RFC 5758 section 3.1.
   */
  SHA_256_WITH_DSA("2.16.840.1.101.3.4.3.2", "SHA256withDSA",
       "SHA-256 with DSA"),



  /**
   * The algorithm identifier for the SHA-1 message digest with the ECDSA
   * signature algorithm.  This identifier is defined in RFC 3279 section 2.2.3.
   */
  SHA_1_WITH_ECDSA("1.2.840.10045.4.1", "SHA1withECDSA", "SHA-1 with ECDSA"),



  /**
   * The algorithm identifier for the 224-bit SHA-2 message digest with the
   * ECDSA signature algorithm.  This identifier is defined in RFC 5758 section
   * 3.2.
   */
  SHA_224_WITH_ECDSA("1.2.840.10045.4.3.1", "SHA224withECDSA",
       "SHA-224 with ECDSA"),



  /**
   * The algorithm identifier for the 256-bit SHA-2 message digest with the
   * ECDSA signature algorithm.  This identifier is defined in RFC 5758 section
   * 3.2.
   */
  SHA_256_WITH_ECDSA("1.2.840.10045.4.3.2", "SHA256withECDSA",
       "SHA-256 with ECDSA"),



  /**
   * The algorithm identifier for the 384-bit SHA-2 message digest with the
   * ECDSA signature algorithm.  This identifier is defined in RFC 5758 section
   * 3.2.
   */
  SHA_384_WITH_ECDSA("1.2.840.10045.4.3.3", "SHA384withECDSA",
       "SHA-384 with ECDSA"),



  /**
   * The algorithm identifier for the 512-bit SHA-2 message digest with the
   * ECDSA signature algorithm.  This identifier is defined in RFC 5758 section
   * 3.2.
   */
  SHA_512_WITH_ECDSA("1.2.840.10045.4.3.4", "SHA512withECDSA",
       "SHA-512 with ECDSA");



  // The OID for this signature algorithm.
  @NotNull private final OID oid;

  // The name for this signature algorithm as it would be used internally by
  // Java.
  @NotNull private final String javaName;

  // The user-friendly name for this signature algorithm.
  @NotNull private final String userFriendlyName;



  /**
   * Creates a new signature algorithm with the provided information.
   *
   * @param  oidString         The string representation of the OID for this
   *                           signature algorithm.
   * @param  javaName          The name for this signature algorithm as it would
   *                           be used internally by Java.
   * @param  userFriendlyName  The user-friendly name for this signature
   *                           algorithm.
   */
  SignatureAlgorithmIdentifier(@NotNull final String oidString,
                               @NotNull final String javaName,
                               @NotNull final String userFriendlyName)
  {
    this.javaName = javaName;
    this.userFriendlyName = userFriendlyName;

    oid = new OID(oidString);
  }



  /**
   * Retrieves the OID for this signature algorithm.
   *
   * @return  The OID for this signature algorithm.
   */
  @NotNull()
  public OID getOID()
  {
    return oid;
  }



  /**
   * Retrieves the name for this signature algorithm as it would be used
   * internally by Java.
   *
   * @return  The name for this signature algorithm as it would be used
   *          internally by Java.
   */
  @NotNull()
  public String getJavaName()
  {
    return javaName;
  }



  /**
   * Retrieves the user-friendly name for this signature algorithm.
   *
   * @return  The user-friendly name for this signature algorithm.
   */
  @NotNull()
  public String getUserFriendlyName()
  {
    return userFriendlyName;
  }



  /**
   * Retrieves the signature algorithm identifier instance with the specified
   * OID.
   *
   * @param  oid  The OID for the signature algorithm identifier instance to
   *              retrieve.
   *
   * @return  The appropriate signature algorithm identifier instance, or
   *          {@code null} if the provided OID does not reference a known
   *          signature algorithm identifier.
   */
  @Nullable()
  public static SignatureAlgorithmIdentifier forOID(@NotNull final OID oid)
  {
    for (final SignatureAlgorithmIdentifier v : values())
    {
      if (v.oid.equals(oid))
      {
        return v;
      }
    }

    return null;
  }



  /**
   * Retrieves the signature algorithm identifier instance with the specified
   * name.
   *
   * @param  name  The name of the signature algorithm identifier instance to
   *               retrieve.
   *
   * @return  The appropriate signature algorithm identifier instance, or
   *          {@code null} if the provided name does not reference a known
   *          signature algorithm identifier.
   */
  @Nullable()
  public static SignatureAlgorithmIdentifier forName(@NotNull final String name)
  {
    final String preparedName = prepareName(name);
    for (final SignatureAlgorithmIdentifier v : values())
    {
      if (v.javaName.equalsIgnoreCase(preparedName))
      {
        return v;
      }
    }

    return null;
  }



  /**
   * Prepares the provided name to be used by the {@link #forName(String)}
   * method.  All spaces, dashes, and underscores will be removed.
   *
   * @param  name  The name to be compared.
   *
   * @return  The prepared version of the provided name.
   */
  @NotNull()
  private static String prepareName(@NotNull final String name)
  {
    final StringBuilder buffer = new StringBuilder(name.length());

    for (final char c : name.toCharArray())
    {
      switch (c)
      {
        case ' ':
        case '-':
        case '_':
          // This character will be omitted.
          break;
        default:
          // This character will be used.
          buffer.append(c);
      }
    }

    return buffer.toString();
  }



  /**
   * Retrieves the user-friendly name for the signature algorithm identifier
   * value with the provided OID, or a string representation of the OID if there
   * is no value with that OID.
   *
   * @param  oid  The OID for the signature algorithm identifier to retrieve.
   *
   * @return  The user-friendly name for the signature algorithm identifier
   *          value with the provided OID, or a string representation of the OID
   *          if there is no value with that OID.
   */
  @NotNull()
  public static String getNameOrOID(@NotNull final OID oid)
  {
    final SignatureAlgorithmIdentifier id = forOID(oid);
    if (id == null)
    {
      return oid.toString();
    }
    else
    {
      return id.userFriendlyName;
    }
  }



  /**
   * Retrieves a string representation of this signature algorithm identifier.
   *
   * @return  A string representation of this signature algorithm identifier.
   */
  @Override()
  @NotNull()
  public String toString()
  {
    return userFriendlyName;
  }
}




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