Noteworthy changes in version 1.4.23 (2018-06-11)
-------------------------------------------------

 * gpg: Sanitize the diagnostic output of the original file name in
   verbose mode.  [#4012,CVE-2018-12020]

 * Does not push the compress-filter if not needed.  [#3898]

 * Fix the regexp sanitation. [#2923]

 * Fix the accidental use of a C99 feature.

 * Does not try to use the removed /dev/srandom device on OpenBSD.

 * Updated the Danish, Dutch and Spansih translations.

 Release info at <https://dev.gnupg.org/T4015>.


Noteworthy changes in version 1.4.22 (2017-07-19)
-------------------------------------------------

 * Mitigate a flush+reload side-channel attack on RSA secret keys
   dubbed "Sliding right into disaster".  For details see
   <https://eprint.iacr.org/2017/627>.  [CVE-2017-7526]

 * Fix some minor bugs.


Noteworthy changes in version 1.4.21 (2016-08-17)
-------------------------------------------------

 * Fix critical security bug in the RNG [CVE-2016-6313].  An attacker
   who obtains 580 bytes from the standard RNG can trivially predict
   the next 20 bytes of output.  Problem detected by Felix Dörre and
   Vladimir Klebanov, KIT.

 * Tweak default options for gpgv.

 * By default do not anymore emit the GnuPG version with --armor.


Noteworthy changes in version 1.4.20 (2015-12-20)
-------------------------------------------------

 * Reject signatures made using the MD5 hash algorithm unless the
   new option --allow-weak-digest-algos or --pgp2 are given.

 * New option --weak-digest to specify hash algorithms which
   should be considered weak.

 * Changed default cipher for symmetric-only encryption to AES-128.

 * Fix for DoS when importing certain garbled secret keys.

 * Improved error reporting for secret subkey w/o corresponding public
   subkey.

 * Improved error reporting in decryption due to wrong algorithm.

 * Fix cluttering of stdout with trustdb info in double verbose mode.

 * Pass a DBUS envvar to gpg-agent for use by gnome-keyring.


Noteworthy changes in version 1.4.19 (2015-02-27)
-------------------------------------------------

 * Use ciphertext blinding for Elgamal decryption [CVE-2014-3591].
   See http://www.cs.tau.ac.il/~tromer/radioexp/ for details.

 * Fixed data-dependent timing variations in modular exponentiation
   [related to CVE-2015-0837, Last-Level Cache Side-Channel Attacks
   are Practical].

 * Detect faulty use of --verify on detached signatures.

 * Changed the PKA method to use CERT records and hashed names.

 * New import option "keep-ownertrust".

 * Support algorithm names when generating keys using the --command-fd
   method.

 * Updated many translations.

 * Updated build system.

 * Fixed a regression in keyserver import

 * Fixed argument parsing for option --debug-level.

 * Fixed DoS based on bogus and overlong key packets.

 * Fixed bugs related to bogus keyrings.

 * The usual minor minor bug fixes.


Noteworthy changes in version 1.4.18 (2014-06-30)
-------------------------------------------------

 * Fix a regression in 1.4.17 if more than one keyid is given
   to --recv-keys et al.

 * Cap RSA and Elgamal keysize at 4096 bit also for unattended key
   generation.


Noteworthy changes in version 1.4.17 (2014-06-23)
-------------------------------------------------

 * Avoid DoS due to garbled compressed data packets. [CVE-2014-4617]

 * Screen keyserver reponses to avoid import of unwanted keys by rogue
   servers.

 * Add hash algorithms to the "sig" records of the colon output.

 * More specific reason codes for INV_RECP status.

 * Fixes for PC/SC access on Apple.

 * Minor bug fixes.


Noteworthy changes in version 1.4.16 (2013-12-18)
-------------------------------------------------

 * Fixed the RSA Key Extraction via Low-Bandwidth Acoustic
   Cryptanalysis attack as described by Genkin, Shamir, and Tromer.
   See <http://www.cs.tau.ac.il/~tromer/acoustic/>.  [CVE-2013-4576]

 * Put only the major version number by default into armored output.

 * Do not create a trustdb file if --trust-model=always is used.

 * Print the keyid for key packets with --list-packets.

 * Changed modular exponentiation algorithm to recover from a small
   performance loss due to a change in 1.4.14.


Noteworthy changes in version 1.4.15 (2013-10-04)
-------------------------------------------------

    * Fixed possible infinite recursion in the compressed packet
      parser. [CVE-2013-4402]

    * Protect against rogue keyservers sending secret keys.

    * Use 2048 bit also as default for batch key generation.

    * Minor bug fixes.


Noteworthy changes in version 1.4.14 (2013-07-25)
-------------------------------------------------

    * Mitigate the Yarom/Falkner flush+reload side-channel attack on
      RSA secret keys.  See <http://eprint.iacr.org/2013/448>.
      [CVE-2013-4242]

    * Fixed IDEA for big-endian CPUs

    * Improved the diagnostics for failed keyserver lockups.

    * Minor bug and portability fixes.


Noteworthy changes in version 1.4.13 (2012-12-20)
-------------------------------------------------

    * Add support for the old cipher algorithm IDEA.

    * Minor bug fixes.


Noteworthy changes in version 1.4.12 (2012-01-30)
-------------------------------------------------

    * GPG now accepts a space separated fingerprint as a user ID.
      This allows to copy and paste the fingerprint from the key
      listing.

    * Removed support for the original HKP keyserver which is not
      anymore used by any site.

    * Rebuild the trustdb after changing the option --min-cert-level.

    * Improved JPEG detection.

    * Included more VMS patches

    * Made it easier to create an installer for Windows.

    * Supports the 32 bit variant of the mingw-w64 toolchain.

    * Made file locking more portable.

    * Minor bug fixes.


Noteworthy changes in version 1.4.11 (2010-10-18)
-------------------------------------------------

    * Bug fixes and portability changes.

    * Minor changes for better interoperability with GnuPG-2.


Noteworthy changes in version 1.4.10 (2009-09-02)
-------------------------------------------------

    * 2048 bit RSA keys are now generated by default.  The default
      hash algorithm preferences has changed to prefer SHA-256 over
      SHA-1.  2048 bit DSA keys are now generated to use a 256 bit
      hash algorithm

    * Support v2 OpenPGP cards.

    * The algorithm to compute the SIG_ID status has been changed to
      match the one from 2.0.10.

    * Improved file locking.  Implemented it for W32.

    * Fixed a memory leak which made imports of many keys very slow.

    * Many smaller bug fixes.

    * Support for the Camellia cipher (RFC-5581).

    * Support for HKP keyservers over SSL ("HKPS").


Noteworthy changes in version 1.4.9 (2008-03-26)
------------------------------------------------

    * Improved AES encryption performance by more than 20% (on ia32).
      Decryption is also a bit faster.

    * Fixed possible memory corruption bug in 1.4.8 while importing
      OpenPGP keys. [CVE-2008-1530]


Noteworthy changes in version 1.4.8 (2007-12-20)
------------------------------------------------

             *******************************************
             * A decade of GnuPG: g10-0.0.0.tar.gz was *
             *      released exactly 10 years ago.     *
             *******************************************

    * Changed the license to GPLv3.

    * Improved detection of keyrings specified multiple times.

    * Changes to better cope with broken keyservers.

    * Minor bug fixes.

    * The new OpenPGP standard is now complete, and has been published
      as RFC-4880.  The GnuPG --openpgp mode (note this is not the
      default) has been updated to match the new standard.  The
      --rfc2440 option can be used to return to the older RFC-2440
      behavior.  The main differences between the two are
      "--enable-dsa2 --no-rfc2440-text --escape-from-lines
      --require-cross-certification".

    * By default (i.e. --gnupg mode), --require-cross-certification is
      now on.  --rfc2440-text and --force-v3-sigs are now off.

    * Allow encryption using legacy Elgamal sign+encrypt keys if
      option --rfc2440 is used.

    * Fixed the auto creation of the key stub for smartcards.

    * Fixed a rare bug in decryption using the OpenPGP card.

    * Fix RFC-4880 typo in the SHA-224 hash prefix.  Old SHA-224
      signatures will continue to work.


Noteworthy changes in version 1.4.7 (2007-03-05)
------------------------------------------------

    * By default, do not allow processing multiple plaintexts in a
      single stream.  Many programs that called GnuPG were assuming
      that GnuPG did not permit this, and were thus not using the
      plaintext boundary status tags that GnuPG provides.  This change
      makes GnuPG reject such messages by default which makes those
      programs safe again.  --allow-multiple-messages returns to the
      old behavior. [CVE-2007-1263].

    * [W32] The environment variable LANGUAGE may be used to override
      the language given by HKCU\Software\GNU\GnuPG:Lang.  The
      language files "*.mo" are expected in a directory named
      "gnupg.nls" below the directory with the gpg.exe binary.

    * New --verify-option show-primary-uid-only.


Noteworthy changes in version 1.4.6 (2006-12-06)
------------------------------------------------

    * Fixed a serious and exploitable bug in processing encrypted
      packages. [CVE-2006-6235].

    * Fixed a buffer overflow in gpg. [bug#728, CVE-2006-6169]

    * Fixed a bug while decrypting certain compressed and encrypted
      messages. [bug#537]

    * Added --s2k-count to set the number of times passphrase mangling
      is repeated.  The default is 65536 times.

    * Added --passphrase-repeat to set the number of times GPG will
      prompt for a new passphrase to be repeated.  This is useful to
      help memorize a new passphrase.  The default is 1 repetition.

    * Added a GPL license exception to the keyserver helper programs
      gpgkeys_ldap, gpgkeys_curl, and gpgkeys_hkp, to clarify any
      potential questions about the ability to distribute binaries
      that link to the OpenSSL library.  GnuPG does not link directly
      to OpenSSL, but libcurl (used for HKP, HTTP, and FTP) and
      OpenLDAP (used for LDAP) may.  Note that this license exception
      is considered a bug fix and is intended to forgive any
      violations pertaining to this issue, including those that may
      have occurred in the past.

    * Man pages are now built from the same source as those of GnuPG-2.


Noteworthy changes in version 1.4.5 (2006-08-01)
------------------------------------------------

    * Reverted check for valid standard handles under Windows.

    * More DSA2 tweaks.

    * Fixed a problem uploading certain keys to the smart card.

    * Fixed 2 more possible memory allocation attacks.

    * Added Norwegian translation.


Noteworthy changes in version 1.4.4 (2006-06-25)
------------------------------------------------

    * User IDs are now capped at 2048 bytes.  This avoids a memory
      allocation attack (see CVE-2006-3082).

    * Added support for the SHA-224 hash.  Like the SHA-384 hash, it
      is mainly useful when DSS (the US Digital Signature Standard)
      compatibility is desired.

    * Added support for the latest update to DSA keys and signatures.
      This allows for larger keys than 1024 bits and hashes other than
      SHA-1 and RIPEMD/160.  Note that not all OpenPGP implementations
      can handle these new keys and signatures yet.  See
      "--enable-dsa2" in the manual for more information.


Noteworthy changes in version 1.4.3 (2006-04-03)
------------------------------------------------

    * If available, cURL-based keyserver helpers are built that can
      retrieve keys using HKP or any protocol that cURL supports
      (HTTP, HTTPS, FTP, FTPS, etc).  If cURL is not available, HKP
      and HTTP are still supported using a built-in cURL emulator.  To
      force building the old pre-cURL keyserver helpers, use the
      configure option --enable-old-keyserver-helpers.  Note that none
      of this affects finger or LDAP support, which are unchanged.
      Note also that a future version of GnuPG will remove the old
      keyserver helpers altogether.

    * Implemented Public Key Association (PKA) signature verification.
      This uses special DNS records and notation data to associate a
      mail address with an OpenPGP key to prove that mail coming from
      that address is legitimate without the need for a full trust
      path to the signing key.

    * When exporting subkeys, those specified with a key ID or
      fingerpint and the '!' suffix are now merged into one keyblock.

    * Added "gpg-zip", a program to create encrypted archives that can
      interoperate with PGP Zip.

    * Added support for signing subkey cross-certification "back
      signatures".  Requiring cross-certification to be present is
      currently off by default, but will be changed to on by default
      in the future, once more keys use it.  A new "cross-certify"
      command in the --edit-key menu can be used to update signing
      subkeys to have cross-certification.

    * The key cleaning options for --import-options and
      --export-options have been further polished.  "import-clean" and
      "export-clean" replace the older
      import-clean-sigs/import-clean-uids and
      export-clean-sigs/export-clean-uids option pairs.

    * New "minimize" command in the --edit-key menu removes everything
      that can be removed from a key, rendering it as small as
      possible.  There are corresponding "export-minimal" and
      "import-minimal" commands for --export-options and
      --import-options.

    * New --fetch-keys command to retrieve keys by specifying a URI.
      This allows direct key retrieval from a web page or other
      location that can be specified in a URI.  Available protocols
      are HTTP and finger, plus anything that cURL supplies, if built
      with cURL support.

    * Files containing several signed messages are not allowed any
      longer as there is no clean way to report the status of such
      files back to the caller.  To partly revert to the old behaviour
      the new option --allow-multisig-verification may be used.

    * The keyserver helpers can now handle keys in either ASCII armor
      or binary format.

    * New auto-key-locate option that takes an ordered list of methods
      to locate a key if it is not available at encryption time (-r or
      --recipient).  Possible methods include "cert" (use DNS CERT as
      per RFC2538bis, "pka" (use DNS PKA), "ldap" (consult the LDAP
      server for the domain in question), "keyserver" (use the
      currently defined keyserver), as well as arbitrary keyserver
      URIs that will be contacted for the key.

    * Able to retrieve keys using DNS CERT records as per RFC-4398.


Noteworthy changes in version 1.4.2 (2005-07-26)
------------------------------------------------

    * New command "verify" in the card-edit menu to display
      the Private-DO-3.  The Admin command has been enhanced to take
      the optional arguments "on", "off" and "verify".  The latter may
      be used to verify the Admin Pin without modifying data; this
      allows displaying the Private-DO-4 with the "list" command.

    * Rewrote large parts of the card code to optionally make use of a
      running gpg-agent.  If --use-agent is being used and a gpg-agent
      with enabled scdaemon is active, gpg will now divert all card
      operations to that daemon.  This is required because both,
      scdaemon and gpg require exclusive access to the card reader. By
      delegating the work to scdaemon, both can peacefully coexist and
      scdaemon is able to control the use of the reader.  Note that
      this requires at least gnupg 1.9.17.

    * Fixed a couple of problems with the card reader.

    * Command completion is now available in the --edit-key and
      --card-edit menus.  Filename completion is available at all
      filename prompts.  Note that completion is only available if the
      system provides a readline library.

    * New experimental HKP keyserver helper that uses the cURL
      library.  It is enabled via the configure option --with-libcurl
      like the other (also experimental) cURL helpers.

    * New key cleaning options that can be used to remove unusable
      (expired, revoked) signatures from a key.  This is available via
      the new "clean" command in --edit-key on a key by key basis, as
      well as via the import-clean-sigs/import-clean-uids and
      export-clean-sigs/export-clean-uids options for --import-options
      and --export-options.  These are currently off by default, and
      replace the import-unusable-sigs/export-unusable-sigs options
      from version 1.4.1.

    * New export option export-reset-subkey-passwd.

    * New option --limit-card-insert-tries.


Noteworthy changes in version 1.4.1 (2005-03-15)
------------------------------------------------

    * New --rfc2440-text option which controls how text is handled in
      signatures.  This is in response to some problems seen with
      certain PGP/MIME mail clients and GnuPG version 1.4.0.  More
      details about this are available at
      <http://lists.gnupg.org/pipermail/gnupg-users/2005-January/024408.html>.

    * New "import-unusable-sigs" and "export-unusable-sigs" tags for
      --import-options and --export-options.  These are off by default,
      which causes GnuPG to not import or export key signatures that
      are not usable (e.g. expired signatures).

    * New experimental HTTP, HTTPS, FTP, and FTPS keyserver helper
      that uses the cURL library <http://curl.haxx.se> to retrieve
      keys.  This is disabled by default, but may be enabled with the
      configure option --with-libcurl.  Without this option, the
      existing HTTP code is used for HTTP, and HTTPS, FTP, and FTPS
      are not supported.

    * When running a --card-status or --card-edit and a public key is
      available, missing secret key stubs will be created on the fly.
      Details of the key are listed too.

    * The implicit packet dumping in double verbose mode is now sent
      to stderr and not to stdout.

    * Added countermeasures against the Mister/Zuccherato CFB attack
      <http://eprint.iacr.org/2005/033>.

    * [W32] The algorithm for the default home directory changed:
      First we look at the environment variable GNUPGHOME, if this one
      is not set, we check whether the registry entry
      {HKCU,HKLM}\Software\GNU\GnuPG:HomeDir has been set. If this
      fails we use a GnuPG directory below the standard application
      data directory (APPDATA) of the current user. Only in the case
      that this directory cannot be determined, the old default of
      c:\gnupg will be used.  The option --homedir still overrides all
      of them.

    * [W32] The locale selection under Windows changed. You need to
      enter the locale in the registry at HKCU\Software\GNU\GnuPG:Lang.
      For German you would use "de".  If it is not set, GnuPG falls
      back to HKLM.  The languages files "*.mo" are expected in a
      directory named "gnupg.nls" below the installation directory;
      that directory must be stored in the registry at the same key as
      above with the name "Install Directory".

    * Add new --edit-key command "bkuptocard" to allow restoring a
      card key from a backup.

    * The "fetch" command of --card-edit now retrieves the key using
      the default keyserver if no URL has been stored on the card.

    * New configure option --enable-noexecstack.


Noteworthy changes in version 1.4.0 (2004-12-16)
------------------------------------------------

    * See the file doc/highlights-1.4.txt for an overview of all
      changes in respect to the 1.2 series.


Noteworthy changes in version 1.3.93 (2004-12-14)
-------------------------------------------------

    * Ask the user to repeat a changed PIN.

    * Switched to automake 1.9.  Minor big fixes.


Noteworthy changes in version 1.3.92 (2004-10-28)
-------------------------------------------------

    * Added Russian man page. Thanks to Pawel I. Shajdo.

    * libiconv is now used to support other character sets other than
      UTF-8, Latin-1,-2 and KOI8-2.  The W32 version will only work
      correctly when iconv.dll is installed on the system.  A binary
      version is available at all GNU mirror sites under libiconv.

    * gettext for Windows has been simplified.  The MO files are now
      distributed UTF-8 encoded and gpg translates on the fly.


Noteworthy changes in version 1.3.91 (2004-10-15)
-------------------------------------------------

    * A new configure option --enable-selinux-support disallows
      processing of confidential files used by gpg (e.g. secring.gpg).
      This helps writing ACLs for the SELinux kernel.

    * Support for fetching keys via finger has been added.  This is
      useful for setting a preferred keyserver URL like
      "finger:wk@g10code.com".

    * Timeout support has been added to the keyserver helpers.  This
      allows users to set an upper limit on how long to wait for the
      keyserver before giving up.

    * New "direct" trust model where users can set key validity
      directly if they do not want to participate in the web of trust.

    * Minor bug fixes, code and string cleanups.


Noteworthy changes in version 1.3.90 (2004-10-01)
-------------------------------------------------

    * Readline support at all prompts is now available if the system
      provides a readline library.  The build time option
      --without-readline may be used to disable this feature.

    * Support for the OpenPGP smartcard is now enabled by default.
      Use the option --disable-card-support to build without support
      for smartcards.

    * New command "addcardkey" in the key edit menu to add subkeys to
      a smartcard. New command "keytocard" to transfer a key to a smartcard.
      The serial number of the card is show in secret key listings.

    * -K may now be used as an alias for --list-secret-keys.

    * HTTP Basic authentication is now supported for all HKP and HTTP
      keyserver functions, either through a proxy or via direct
      access.


Noteworthy changes in version 1.3.6 (2004-05-22)
------------------------------------------------

    * New --keyid-format option that selects short (99242560), long
      (DB698D7199242560), 0xshort (0x99242560), or 0xlong
      (0xDB698D7199242560) keyid displays.  This lets users tune the
      display to what they prefer.

    * The --list-options and --verify-options option
      "show-long-keyids" has been removed since --keyid-format
      obviates the need for them.

    * Support for the old quasi-1991 partial length encoding has been
      removed.

    * The --export-all and --export-options include-non-rfc options
      have been removed as superfluous since nonstandard V3 Elgamal
      sign+encrypt keys have been removed.

    * Preferred keyserver support has been added.  Users may set a
      preferred keyserver via the --edit-key command "keyserver".  If
      the --keyserver-option honor-keyserver-url is set (and it is by
      default), then the preferred keyserver is used when refreshing
      that key.

    * The --sig-keyserver-url option can be used to inform signature
      recipients where the signing key can be downloaded.  When
      verifying the signature, if the signing key is not present, and
      the keyserver options honor-keyserver-url and auto-key-retrieve
      are set, this URL will be used to retrieve the key.

    * Support for fetching keys via HTTP has been added.  This is
      mainly useful for setting a preferred keyserver URL like
      "http://www.jabberwocky.com/key.asc".

    * New --ask-cert-level/--no-ask-cert-level option to turn on and
      off the prompt for signature level when signing a key.  Defaults
      to off.

    * New --gpgconf-list command for internal use by the gpgconf
      utility from gnupg 1.9.x.


Noteworthy changes in version 1.3.5 (2004-02-26)
------------------------------------------------

    * New --min-cert-level option to disregard key signatures that are
      under a specified level.  Defaults to 2 (i.e. discard 0x11
      signatures).

    * New --max-output option to limit the amount of plaintext output
      generated by GnuPG.  This option can be used by programs which
      call GnuPG to process messages that may result in plaintext
      larger than the calling program is prepared to handle.  This is
      sometimes called a "Decompression Bomb".

    * New --list-config command for frontends and other programs that
      call GnuPG.  See doc/DETAILS for the specifics of this.

    * Some performance improvements with large keyrings.  See the
      build time option --enable-key-cache=SIZE in the README file for
      details.

    * Some portability fixes for the OpenBSD/i386, HPPA, and AIX
      platforms.

    * New keyserver-option "http-proxy" to specify which proxy to use
      in the config file without using environment variables.

    * Added support for storing, retrieving, and searching for keys in
      LDAP servers.  Note that this is different than the "LDAP
      keyserver" which was already (and remains) supported.

    * Added support for TLS and LDAPS session encryption for LDAP.

    * --show-session-key/--override-session-key now works with
      --symmetric messages.

    * The configure options --enable-rsa and --disable-rsa can now be
      used to enable or disable the RSA algorithm.  This can be useful
      for embedded use where space is tight.  --enable-minimal
      includes --disable-rsa.  RSA is enabled by default.

    * The last support for Elgamal sign+encrypt keys has been removed.


Noteworthy changes in version 1.3.4 (2003-11-27)
------------------------------------------------

    * Added support for BZIP2 compression.  This should be considered
      experimental, and is only available if the libbzip2 library
      <http://sources.redhat.com/bzip2/> is installed.

    * Added the ability to handle messages that can be decrypted with
      either a passphrase or a secret key.  These messages may be
      generated with --symmetric --encrypt or --symmetric --sign
      --encrypt.

    * The config file search has been enhanced to try for less
      specific filename matches before giving up.  For example,
      version 1.3.4 will try for gpg.conf-1.3.4, gpg.conf-1.3, and
      gpg.conf-1 before falling back to the regular gpg.conf file.

    * Fixed a format string bug in the HKP keyserver handler.

    * Support for Elgamal sign+encrypt keys has been removed.  Old
      signatures may still be verified, and existing encrypted
      messages may still be decrypted, but no new signatures may be
      issued by, and no new messages will be encrypted to, these keys.


Noteworthy changes in version 1.3.3 (2003-10-10)
------------------------------------------------

    * Basic support for the OpenPGP card.  New commands --card-status,
      --card-edit, --change-pin and the configuration options
      --reader-port, --ctapi-driver, --pcsc-driver, and --disable-ccid.

    * Full (read/write) support for the SHA-256 hash has been added.

    * Support for the TIGER/192 hash has been dropped.  This should
      not be interpreted as a statement as to the strength of
      TIGER/192 - rather, the upcoming revision to the OpenPGP
      standard removes support for several unused (or mostly unused)
      hashes.

    * Revoked or expired user IDs are now skipped when selecting keys
      for encryption.  Specifying a key by the key ID overrides this
      check and allows the selection of any key.

    * Note that --no-mangle-dos-filenames is now the default.  If you
      are upgrading from a 1.2.x version of GnuPG, and are running a
      very old version of Windows that has the 8.3 filename limit, you
      may need to change this.

    * Multiple "Comment:" lines in armored output are now allowed.

    * New --list-options option.  This option takes a list of
      arguments that allows the user to customize exactly what key
      listings (including the --edit-key listing) look like, enabling
      or disabling things such as photo display, policy URL, preferred
      keyserver URL, or notation display, long or short keyIDs,
      calculated validity for each user ID, etc.  See the manual for
      the complete list of list-options.

    * New --verify-options option.  This option takes a list of
      arguments that allows the user to customize exactly what happens
      during signature verification, enabling or disabling things such
      as photo display, policy URL, preferred keyserver URL, or
      notation display, long or short keyIDs, calculated validity for
      each user ID, etc.  See the manual for the complete list of
      verify-options.

    * New --sig-keyserver-url to embed a "where to get my key"
      subpacket into a signature.

    * The options --show-photos, --show-policy-url, --show-notation,
      and --show-keyring are all deprecated in favor of those
      arguments to --list-options and --verify-options.  The new
      method is more flexible since a user can specify (for example)
      showing photos during sig verification, but not in key listings.

    * The complete fingerprint of the key that made a given key
      certification is now available in the --with-colons output.  For
      technical reasons, this is only available when running with
      --no-sig-cache set.  See doc/DETAILS for the specifics of this.

    * IPv6 support for HKP keyserver access.  IPv6 for LDAP keyserver
      access is also supported, but is dependent on the LDAP library
      used.

    * To simplify running both the stable (1.2.x) and development
      (1.3.x) versions of GnuPG, the development version will try to
      load the options file gpg.conf-VERSION (e.g. gpg.conf-1.3.3 for
      this release) before falling back to the regular gpg.conf file.

    * Two new %-expandos for use in notation and policy URLs.  "%g"
      expands to the fingerprint of the key making the signature
      (which might be a subkey), and "%p" expands to the fingerprint
      of the primary key that owns the key making the signature.

    * New "tru" record in --with-colons --list-keys listings.  It
      shows the status of the trust database that was used to
      calculate the key validity in the listings.  See doc/DETAILS for
      the specifics of this.

    * New REVKEYSIG status tag for --status-fd.  It indicates a valid
      signature that was issued by a revoked key.  See doc/DETAILS for
      the specifics of this.

    * A number of portability changes to make building GnuPG on
      less-common platforms easier.


Noteworthy changes in version 1.3.2 (2003-05-27)
------------------------------------------------

    * New "--gnupg" option (set by default) that disables --openpgp,
      and the various --pgpX emulation options.  This replaces
      --no-openpgp, and --no-pgpX, and also means that GnuPG has
      finally grown a --gnupg option to make GnuPG act like GnuPG.

    * A bug in key validation has been fixed.  This bug only affects
      keys with more than one user ID (photo IDs do not count here),
      and results in all user IDs on a given key being treated with
      the validity of the most-valid user ID on that key.

    * Notation names that do not contain a '@' are no longer allowed
      unless --expert is set.  This is to help prevent pollution of
      the (as yet unused) IETF notation namespace.

    * Multiple trust models are now supported via the --trust-model
      option.  The options are "pgp" (web-of-trust plus trust
      signatures), "classic" (web-of-trust only), and "always"
      (identical to the --always-trust option).

    * The --personal-{cipher|digest|compression}-preferences are now
      consulted to get default algorithms before resorting to the
      last-ditch defaults of --s2k-cipher-algo, SHA1, and ZIP
      respectively.  This allows a user to set algorithms to use in a
      safe manner so they are used when legal to do so, without
      forcing them on for all messages.

    * New --primary-keyring option to designate the keyring that the
      user wants new keys imported into.

    * --s2k-digest-algo is now used for all password mangling.
      Earlier versions used both --s2k-digest-algo and --digest-algo
      for passphrase mangling.

    * Handling of --hidden-recipient or --throw-keyid messages is now
      easier - the user only needs to give their passphrase once, and
      GnuPG will try it against all of the available secret keys.

    * Care is taken to prevent compiler optimization from removing
      memory wiping code.

    * New option --no-mangle-dos-filenames so that filenames are not
      truncated in the W32 version.

    * A "convert-from-106" script has been added.  This is a simple
      script that automates the conversion from a 1.0.6 or earlier
      version of GnuPG to a 1.0.7 or later version.

    * Disabled keys are now skipped when selecting keys for
      encryption.  If you are using the --with-colons key listings to
      detect disabled keys, please see doc/DETAILS for a minor format
      change in this release.

    * Minor trustdb changes to make the trust calculations match
      common usage.

    * New command "revuid" in the --edit-key menu to revoke a user ID.
      This is a simpler interface to the old method (which still
      works) of revoking the user ID self-signature.

    * Status VALIDSIG does now also print the primary key's
      fingerprint, as well as the signature version, pubkey algorithm,
      hash algorithm, and signature class.

    * Add read-only support for the SHA-256 hash, and optional
      read-only support for the SHA-384 and SHA-512 hashes.

    * New option --enable-progress-filter for use with frontends.

    * DNS SRV records are used in HKP keyserver lookups to allow
      administrators to load balance and select keyserver ports
      automatically.  This is as specified in
      draft-shaw-openpgp-hkp-00.txt.

    * When using the "keyid!" syntax during a key export, only that
      specified key is exported.  If the key in question is a subkey,
      the primary key plus only that subkey is exported.

    * configure --disable-xxx options to disable individual algorithms
      at build time.  This can be used to build a smaller gpg binary
      for embedded uses where space is tight.  See the README file for
      the algorithms that can be used with this option, or use
      --enable-minimal to build the smallest gpg possible (disables
      all optional algorithms, disables keyserver access, and disables
      photo IDs).

    * The keyserver no-modify flag on a key can now be displayed and
      modified.

    * Note that the TIGER/192 digest algorithm is in the process of
      being dropped from the OpenPGP standard.  While this release of
      GnuPG still contains it, it is disabled by default.  To ensure
      you will still be able to use your messages with future versions
      of GnuPG and other OpenPGP programs, please do not use this
      algorithm.


Noteworthy changes in version 1.3.1 (2002-11-12)
------------------------------------------------

    * Trust signature support.  This is based on the Maurer trust
      model where a user can specify the trust level along with the
      signature with multiple levels so users can delegate
      certification ability to other users, possibly restricted by a
      regular expression on the user ID.  Note that full trust
      signature support requires a regular expression parsing library.
      The regexp code from glibc 2.3.1 is included for those platforms
      that don't have working regexp functions available.  The
      configure option --disable-regex may be used to disable any
      regular expression code, which will make GnuPG ignore any trust
      signature with a regular expression included.

    * Two new commands --hidden-recipient (-R) and --hidden-encrypt-to
      encrypt to a user, but hide the identity of that user.  This is
      the same functionality as --throw-keyid, but can be used on a
      per-user basis.

    * Full algorithm names (e.g. "3DES", "SHA1", "ZIP") can now be
      used interchangeably with the short algorithm names (e.g. "S2",
      "H2", "Z1") anywhere algorithm names are used in GnuPG.


Noteworthy changes in version 1.3.0 (2002-10-18)
------------------------------------------------

    * The last piece of internal keyserver support has been removed,
      and now all keyserver access is done via the keyserver plugins.
      There is also a newer keyserver protocol used between GnuPG and
      the plugins, so plugins from earlier versions of GnuPG may not
      work properly.

    * The HKP keyserver plugin supports the new machine-readable key
      listing format for those keyservers that provide it.

    * When using a HKP keyserver with multiple DNS records (such as
      wwwkeys.pgp.net which has the addresses of multiple servers
      around the world), try all records until one succeeds.  Note
      that it depends on the LDAP library used whether the LDAP
      keyserver plugin does this as well.

    * The library dependencies for OpenLDAP seem to change fairly
      frequently, and GnuPG's configure script cannot guess all the
      combinations.  Use ./configure LDAPLIBS="-L libdir -l libs" to
      override the script and use the libraries selected.

    * Secret keys generated with --export-secret-subkeys are now
      indicated in key listings with a '#' after the "sec", and in
      --with-colons listings by showing no capabilities (no lowercase
      characters).

    * --trusted-key has been un-obsoleted, as it is useful for adding
      ultimately trusted keys from the config file.  It is identical
      to using --edit and "trust" to change a key to ultimately
      trusted.

    * Translations other than de are no longer distributed with the
      development branch.  This is due to the frequent text changes
      during development, which cause the translations to rapidly go
      out of date.


Noteworthy changes in version 1.1.92 (2002-09-11)
-------------------------------------------------

    * [IMPORTANT] The default configuration file is now
      ~/.gnupg/gpg.conf.  If an old ~/.gnupg/options is found it will
      still be used.  This change is required to have a more
      consistent naming scheme with forthcoming tools.

    * The use of MDCs have increased.  A MDC will be used if the
      recipients directly request it, if the recipients have AES,
      AES192, AES256, or TWOFISH in their cipher preferences, or if
      the chosen cipher has a blocksize not equal to 64 bits
      (currently this is also AES, AES192, AES256, and TWOFISH).

    * GnuPG will no longer automatically disable compression when
      processing an already-compressed file unless a MDC is being
      used.  This is to give the message a certain amount of
      resistance to the chosen-ciphertext attack while communicating
      with other programs (most commonly PGP earlier than version 7.x)
      that do not support MDCs.

    * The option --interactive now has the desired effect when
      importing keys.

    * The file permission and ownership checks on files have been
      clarified.  Specifically, the homedir (usually ~/.gnupg) is
      checked to protect everything within it.  If the user specifies
      keyrings outside this homedir, they are presumed to be shared
      keyrings and therefore *not* checked.  Configuration files
      specified with the --options option and the IDEA cipher
      extension specified with --load-extension are checked, along
      with their enclosing directories.

    * The configure option --with-static-rnd=auto allows to build gpg
      with all available entropy gathering modules included.  At
      runtime the best usable one will be selected from the list
      linux, egd, unix.  This is also the default for systems lacking
