<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE chapter SYSTEM "chapter.dtd">

<chapter>
  <header>
    <copyright>
      <year>2008</year>
      <year>2022</year>
      <holder>Ericsson AB, All Rights Reserved</holder>
    </copyright>
    <legalnotice>
  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.

  The Initial Developer of the Original Code is Ericsson AB.
    </legalnotice>
    
    <title>public_key Release Notes</title>
    <prepared>Ingela Anderton Andin</prepared>
    <responsible>Ingela Anderton Andin</responsible>
    <docno></docno>
    <approved></approved>
    <checked></checked>
    <date>2008-01-22</date>
    <rev>A</rev>
    <file>notes.xml</file>
  </header>

<section><title>Public_Key 1.13</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Added functions to retrieve OS provided CA-certs.</p>
          <p>
	    Own Id: OTP-17798 Aux Id: GH-5760 </p>
        </item>
        <item>
          <p>
	    Allow key file passwords to be input as a single binary,
	    that is we change the data type to be the more for the
	    purpose logical data type iodata() instead of string().</p>
          <p>
	    Own Id: OTP-17890</p>
        </item>
        <item>
          <p>
	    The deprecated public_key functions ssh_decode/2,
	    ssh_encode/2, ssh_hostkey_fingerprint/1 and
	    ssh_hostkey_fingerprint/2 are removed.</p>
          <p>
	    They are replaced by ssh_file:decode/2,
	    ssh_file:encode/2, ssh:hostkey_fingerprint/1 and
	    ssh:hostkey_fingerprint/2 respectively.</p>
          <p>
	    Note that the decode/2 and encode/2 are not exact
	    replacement functions, some minor changes may be needed.
	    Se the manual for more information.</p>
          <p>
	    *** POTENTIAL INCOMPATIBILITY ***</p>
          <p>
	    Own Id: OTP-17921</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.12</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Support password fun for protected keyfiles in
	    ssl:connect function.</p>
          <p>
	    Own Id: OTP-17816 Aux Id: PR-5607 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.11.3</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Avoid re-encoding of decoded certificates. This could
	    cause unexpected failures as some subtle encoding errors
	    can be tolerated when decoding but hence creating another
	    sequence of bytes if the decoded value is re-encoded.</p>
          <p>
	    Own Id: OTP-17657</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.11.2</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    public_key:pkix_sign/2 now honors the salt length from
	    the provided input parameters. Earlier this could result
	    in incorrect signatures if not using recommended
	    defaults.</p>
          <p>
	    Own Id: OTP-17534 Aux Id: GH-5054, PR-5057 </p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    When decoding an 'ECPrivateKey' unwrap the private key.
	    For more precise information see RFC 8410, section 7.</p>
          <p>
	    Own Id: OTP-17609 Aux Id: GH-5157, GH-5156 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.11.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Handle cross-signed root certificates when old root
	    expired as reported in GH-4877.</p>
          <p>
	    Own Id: OTP-17475 Aux Id: GH-4877 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.11</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    TLS connections now support EdDSA certificates.</p>
          <p>
	    Own Id: OTP-17142 Aux Id: PR-4756, GH-4637, GH-4650 </p>
        </item>
        <item>
          <p>
	    The functions public_key:ssh_encode/2,
	    public_key:ssh_decode/2,
	    public_key:ssh_hostkey_fingerprint/1 and
	    public_key:ssh_hostkey_fingerprint/2 are deprecated.</p>
          <p>
	    Replacement functions are available in SSH, see the
	    <seeguide
	    marker="system/general_info:deprecations#otp-24">Deprecations</seeguide>
	    chapter in the Erlang/OTP documentation.</p>
          <p>
	    Own Id: OTP-17352</p>
        </item>
        <item>
          <p>
	    Enhance documentation and logging of certificate
	    handling.</p>
          <p>
	    Own Id: OTP-17384 Aux Id: GH-4800 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.10.0.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Handle cross-signed root certificates when old root
	    expired as reported in GH-4877.</p>
          <p>
	    Own Id: OTP-17475 Aux Id: GH-4877 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.10</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Fixed case insensitive hostname check.</p>
          <p>
	    Own Id: OTP-17242 Aux Id: GH-4500 </p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Add sanity check of trusted anchor certificate expiration
	    to pkix_path_validation/3. Although the anchor is
	    considered a trusted input this sanity check does provide
	    extra security for the users of the public_key
	    application as this property needs to be checked at time
	    of usage and fits very well with the other checks
	    performed here.</p>
          <p>
	    Own Id: OTP-16907</p>
        </item>
        <item>
          <p>
	    Adjust generation of test certificates to conform to RFC
	    5280 rules for formatting of the certificates validity</p>
          <p>
	    Own Id: OTP-17111</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.9.2</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Corrected dialyzer spec for pkix_path_validation/3</p>
          <p>
	    Own Id: OTP-17069</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.9.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Fix the issue that pem_decode will crash with an invalid
	    input.</p>
          <p>
	    Own Id: OTP-16902 Aux Id: ERIERL-534 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.9</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Fixed an insignificant whitespace issue when decoding PEM
	    file.</p>
          <p>
	    Own Id: OTP-16801 Aux Id: ERL-1309 </p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Experimental OCSP client support.</p>
          <p>
	    Own Id: OTP-16448</p>
        </item>
        <item>
          <p>
	    Use user returned path validation error for selfsigned
	    cert. It allows users of the ssl application to customize
	    the generated TLS alert, within the range of defined
	    alerts.</p>
          <p>
	    Own Id: OTP-16592</p>
        </item>
        <item>
          <p>
	    add API function to retrieve the subject-ID of an X509
	    certificate</p>
          <p>
	    Own Id: OTP-16705</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.8</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Added support for RSA-PSS signature schemes</p>
          <p>
	    Own Id: OTP-15247</p>
        </item>
        <item>
          <p>
	    Calls of deprecated functions in the <seeguide
	    marker="crypto:new_api#the-old-api">Old Crypto
	    API</seeguide> are replaced by calls of their <seeguide
	    marker="crypto:new_api#the-new-api">substitutions</seeguide>.</p>
          <p>
	    Own Id: OTP-16346</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.7.2</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Add support for key exchange with Edward curves and
	    PSS-RSA padding in signature verification.</p>
          <p>
	    Own Id: OTP-16528</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.7.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Corrected CRL handling which could cause CRL verification
	    to fail. This could happen when the CRL distribution
	    point explicitly specifies the CRL issuer, that is not
	    using the fallback.</p>
          <p>
	    Own Id: OTP-16156 Aux Id: ERL-1030 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.7</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Support Password based encryption with AES</p>
          <p>
	    Own Id: OTP-15870 Aux Id: ERL-952 </p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Change dialyzer spec to avoid confusion</p>
          <p>
	    Own Id: OTP-15843 Aux Id: ERL-915 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.6.7</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    RSA options passed to crypto for encrypt and decrypt with
	    public or private key.</p>
          <p>
	    Own Id: OTP-15754 Aux Id: ERL-878 </p>
        </item>
        <item>
          <p>
	    Fix dialyzer warnings caused by a faulty type
	    specification for digest_type().</p>
          <p>
	    This change updates digest_type() and the functions
	    operating with this argument type to accept both 'sha1'
	    and 'sha' as digest_type().</p>
          <p>
	    Own Id: OTP-15776</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Add possibility to read PEM files encrypted with old PEM
	    encryption using AES-256</p>
          <p>
	    Own Id: OTP-13726</p>
        </item>
        <item>
          <p>
	    Relax decoding of certificates to so that "harmless"
	    third party encoding errors may be accepted but not
	    created by the public_key application. This adds
	    acceptance of using an incorrect three character country
	    code, the PKIX standard use two character country codes.
	    It is also accepted that the country code is utf8 encoded
	    but the specification says it should be ASCII.</p>
          <p>
	    Own Id: OTP-15687 Aux Id: PR-2162 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.6.6.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Support Password based encryption with AES</p>
          <p>
	    Own Id: OTP-15870 Aux Id: ERL-952 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.6.6</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Back port of bug fix ERL-893 from OTP-22 and document
	    enhancements that will solve dialyzer warnings for users
	    of the ssl application.</p>
          <p>
	    This change also affects public_key, eldap (and inet
	    doc).</p>
          <p>
	    Own Id: OTP-15785 Aux Id: ERL-929, ERL-893, PR-2215 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.6.5</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Add export of dialyzer type</p>
          <p>
	    Own Id: OTP-15624</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.6.4</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Added ed25519 and ed448 sign/verify.</p>
          <p>
	    Requires OpenSSL 1.1.1 or higher as cryptolib under the
	    OTP application <c>crypto</c>.</p>
          <p>
	    Own Id: OTP-15419 Aux Id: OTP-15094 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.6.3</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Add DSA SHA2 oids in public_keys ASN1-spec and
	    public_key:pkix_sign_types/1</p>
          <p>
	    Own Id: OTP-15367</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.6.2</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Removed <c>#DSAPrivateKey{}</c> as acceptable input to
	    <c>public_key:verify/5</c>.</p>
          <p>
	    Own Id: OTP-15284</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    The typing in the CRYPTO and PUBLIC_KEY applications are
	    reworked and a few mistakes are corrected.</p>
          <p>
	    The documentation is now generated from the typing and
	    some clarifications are made.</p>
          <p>
	    A new chapter on Algorithm Details such as key sizes and
	    availability is added to the CRYPTO User's Guide.</p>
          <p>
	    Own Id: OTP-15134</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.6.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Some of the keylengths in the newly generated moduli file
	    in public_key are not universally supported. This could
	    cause the SSH key exchange
	    diffie-hellman-group-exchange-sha* to fail.</p>
          <p>
	    Those keylengths are now removed.</p>
          <p>
	    Own Id: OTP-15151 Aux Id: OTP-15113 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.6</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Update calls to the base64 module to conform to that
	    module's type specifications.</p>
          <p>
	    Own Id: OTP-14788 Aux Id: OTP-14624 </p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Use uri_string module instead of http_uri.</p>
          <p>
	    Own Id: OTP-14902</p>
        </item>
        <item>
          <p>
	    A new function -
	    <c>public_key:pkix_verify_hostname_match_fun/1</c> -
	    returns a fun to be given as option <c>match_fun</c> to
	    <c>public_key:pkix_verify_hostname/3</c> or via ssl.</p>
          <p>
	    The fun makes the verify hostname matching according to
	    the specific rules for the protocol in the argument.
	    Presently only <c>https</c> is supported.</p>
          <p>
	    Own Id: OTP-14962 Aux Id: ERL-542, OTP-15102 </p>
        </item>
        <item>
          <p>
	    Complete PKCS-8 encoding support and enhance the
	    decoding of 'PrivateKeyInfo' to conform to the rest of
	    Erlang public_key API.</p>
          <p>
	    Own Id: OTP-15093</p>
        </item>
        <item>
          <p>
	    A new moduli file is generated. This file is used for the
	    recommended <c>diffie-hellman-group-exchange-sha256</c>
	    key exchange algorithm in SSH.</p>
          <p>
	    Own Id: OTP-15113</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.5.2</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Fixed a bug in <c>public_key:ssh_encode/2</c> that made
	    it possible to erroneously encode e.g. an RSA key with
	    another type e.g. ECDSA in the resulting binary.</p>
          <p>
	    Own Id: OTP-14570 Aux Id: ERIERL-52, OTP-14676 </p>
        </item>
        <item>
          <p>
	    Corrected handling of parameterized EC keys in
	    public_key:generate_key/1 so that it will work as
	    expected instead of causing a runtime error in crypto.</p>
          <p>
	    Own Id: OTP-14620</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.5.1</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Hostname verification: Add handling of the general name
	    <c>iPAddress</c> in certificate's subject alternative
	    name extension (<c>subjAltName</c>).</p>
          <p>
	    Own Id: OTP-14653</p>
        </item>
        <item>
          <p>
	    Correct key handling in pkix_test_data/1 and use a
	    generic example mail address instead of an existing one.</p>
          <p>
	    Own Id: OTP-14766</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.5</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    public_key now handles elliptic curve parameters in a
	    consistent way so that decoded ECDSA keys can be
	    correctly re-encoded.</p>
          <p>
	    *** POTENTIAL INCOMPATIBILITY ***</p>
          <p>
	    Own Id: OTP-14621 Aux Id: ERL-480, ERL-481 </p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Extend crypto:sign, crypto:verify, public_key:sign and
	    public_key:verify with:</p>
          <p>
	    * support for RSASSA-PS padding for signatures and for
	    saltlength setting<br/> * X9.31 RSA padding.<br/> * sha,
	    sha224, sha256, sha384, and sha512 for dss signatures as
	    mentioned in NIST SP 800-57 Part 1.<br/> * ripemd160 to
	    be used for RSA signatures.</p>
          <p>
	    This is a manual merge of half of the pull request 838 by
	    potatosalad from Sept 2015.</p>
          <p>
	    Own Id: OTP-13704 Aux Id: PR838 </p>
        </item>
        <item>
          <p>
	    Add API function pkix_test_data/1 for facilitating
	    automated testing. This is useful for applications that
	    perform X509-certifcate path validation of so called
	    certificate chains, such as TLS.</p>
          <p>
	    Own Id: OTP-14181</p>
        </item>
        <item>
          <p>
	    Improved error propagation and reports</p>
          <p>
	    Own Id: OTP-14236</p>
        </item>
        <item>
          <p>
	    RSAPrivateKey version is set to 'two-prime' instead of
	    using the underlying enumeration value directly.</p>
          <p>
	    Own Id: OTP-14534</p>
        </item>
        <item>
          <p>
	    Deprecated function <c>crypto:rand_uniform/2</c> is
	    replaced by <c>rand:uniform/1</c>.</p>
          <p>
	    Own Id: OTP-14608</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.4.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Bug for <c>public_key:generate_key({namedCurve,OID})</c>
	    fixed.</p>
          <p>
	    Own Id: OTP-14258</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Modernized internal representation used for crl
	    validation by use of maps.</p>
          <p>
	    Own Id: OTP-14111</p>
        </item>
        <item>
          <p>
	    Support EC key in pkix_sign/2</p>
          <p>
	    Own Id: OTP-14294</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.4</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    New function <c>pkix_verify_hostname/2,3</c> Implements
	    certificate hostname checking. See the manual and RFC
	    6125.</p>
          <p>
	    Own Id: OTP-13009</p>
        </item>
        <item>
          <p>
	    The ssh host key fingerprint generation now also takes a
	    list of algorithms and returns a list of corresponding
	    fingerprints. See
	    <c>public_key:ssh_hostkey_fingerprint/2</c> and the
	    option <c>silently_accept_hosts</c> in
	    <c>ssh:connect</c>.</p>
          <p>
	    Own Id: OTP-14223</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.3</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    New function
	    <c>public_key:ssh_hostkey_fingerprint/1,2</c> to
	    calculate the SSH host key fingerprint string.</p>
          <p>
	    Own Id: OTP-13888 Aux Id: OTP-13887 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.2</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    The ASN-1 type GeneralName can have more values, then the
	    most common directory name, the code now handles this.</p>
          <p>
	    Own Id: OTP-13554</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Handle PEM encoded EC public keys</p>
          <p>
	    Own Id: OTP-13408</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.1.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    An encapsulated PEM header shall be followed by a blank
	    line</p>
          <p>
	    Own Id: OTP-13381 Aux Id: seq13070 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.1</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    The 'ecdsa-sha2-nistp256', 'ecdsa-sha2-nistp384' and
	    'ecdsa-sha2-nistp521' signature algorithms for ssh are
	    implemented. See RFC 5656.</p>
          <p>
	    Own Id: OTP-12936</p>
        </item>
        <item>
          <p>
	    There is now a file (public_key/priv/moduli) which lists
	    size-generator-modulus triples. The purpose is to give
	    servers the possibility to select the crypto primes
	    randomly among a list of pregenerated triples. This
	    reduces the risk for some attacks on diffie-hellman
	    negotiation.</p>
          <p>
	    See the reference manual for public_key:dh_gex_group/4
	    where the handling of this is described.</p>
          <p>
	    The ssh server (ssh:daemon) uses this.</p>
          <p>
	    Own Id: OTP-13054 Aux Id: OTP-13052 </p>
        </item>
        <item>
          <p>
	    Add different upper bounds for different string types as
	    suggested by comment in PKIX1Explicit88.</p>
          <p>
	    Own Id: OTP-13132</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.0.1</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Document enhancements</p>
          <p>
	    Own Id: OTP-12986</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 1.0</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    public_key: Remove legacy switch compact_bit_string</p>
          <p>
	    E.i bitstrings will not be decode as {Unused, Binary},
	    they are now Erlang bitstrings.</p>
          <p>
	    Also the compact_bit_string implies the
	    legacy_erlang_types switch So removing the switch will
	    also make OCTET STRING values be represented as binaries.</p>
          <p>
	    Undecoded open type will now be wrapped in a
	    asn1_OPENTYPE tuple.</p>
          <p>
	    This will change some values in records returned by the
	    public_key API making this change a potentiall
	    incompatibility.</p>
          <p>
	    *** POTENTIAL INCOMPATIBILITY ***</p>
          <p>
	    Own Id: OTP-12110</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 0.23</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Improve/extend support for CRL handling.</p>
          <p>
	    Own Id: OTP-12547 Aux Id: OTP-10362 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 0.22.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Added missing encoding support for PBES2, and also
	    completed support for PBES1 that was incomplete.</p>
          <p>
	    Own Id: OTP-11915</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 0.22</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Fix incorrect dialyzer spec and types, also enhance
	    documentation. </p>
          <p>
	    Thanks to Ayaz Tuncer.</p>
          <p>
	    Own Id: OTP-11627</p>
        </item>
        <item>
          <p>
	    Application upgrade (appup) files are corrected for the
	    following applications: </p>
          <p>
	    <c>asn1, common_test, compiler, crypto, debugger,
	    dialyzer, edoc, eldap, erl_docgen, et, eunit, gs, hipe,
	    inets, observer, odbc, os_mon, otp_mibs, parsetools,
	    percept, public_key, reltool, runtime_tools, ssh,
	    syntax_tools, test_server, tools, typer, webtool, wx,
	    xmerl</c></p>
          <p>
	    A new test utility for testing appup files is added to
	    test_server. This is now used by most applications in
	    OTP.</p>
          <p>
	    (Thanks to Tobias Schlager)</p>
          <p>
	    Own Id: OTP-11744</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Moved elliptic curve definition from the crypto
	    NIF/OpenSSL into Erlang code, adds the RFC-5639 brainpool
	    curves and makes TLS use them (RFC-7027).</p>
          <p>
	    Thanks to Andreas Schultz</p>
          <p>
	    Own Id: OTP-11578</p>
        </item>
        <item>
          <p>
	    Handle v1 CRLs, with no extensions and fixes issues with
	    IDP (Issuing Distribution Point) comparison during CRL
	    validation. </p>
          <p>
	    Thanks to Andrew Thompson</p>
          <p>
	    Own Id: OTP-11761</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 0.21</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Fixed a little typo in public_key documentation. Thanks
	    to Tomas Morstein.</p>
          <p>
	    Own Id: OTP-11380</p>
        </item>
        <item>
          <p>
	    public_key: Workaround for incorrectly encoded utf8
	    emailAddress. Thanks to Andrew Bennett.</p>
          <p>
	    Own Id: OTP-11470</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 0.20</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Extend PKCS-7 to support SCEP (Simple Certificate
	    Enrollment Protocol).</p>
          <p>
	    Own Id: OTP-10874</p>
        </item>
        <item>
          <p>
	    public_key:pem_entry_decode/2 now handles AES-128-CBC
	    ciphered keys. Thanks to Simon Cornish.</p>
          <p>
	    Own Id: OTP-11281</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 0.19</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Add support for ISO oids 1.3.14.3.2.29 and 1.3.14.3.2.27
	    that are sometimes used instead of the PKCS defined oids
	    1.2.840.113549.1.1.5 and 1.2.840.10040.4.3. Add function
	    pkix_sign_types:/1 that translates oids to to algorithm
	    atoms ex:</p>
          <p>
	    > public_key:pkix_sign_types({1,3,14,3,2,29}). {sha,rsa}</p>
          <p>
	    Own Id: OTP-10873</p>
        </item>
        <item>
          <p>
	    Integrate elliptic curve contribution from Andreas
	    Schultz </p>
          <p>
	    In order to be able to support elliptic curve cipher
	    suites in SSL/TLS, additions to handle elliptic curve
	    infrastructure has been added to public_key and crypto.</p>
          <p>
	    This also has resulted in a rewrite of the crypto API to
	    gain consistency and remove unnecessary overhead. All OTP
	    applications using crypto has been updated to use the new
	    API.</p>
          <p>
	    Impact: Elliptic curve cryptography (ECC) offers
	    equivalent security with smaller key sizes than other
	    public key algorithms. Smaller key sizes result in
	    savings for power, memory, bandwidth, and computational
	    cost that make ECC especially attractive for constrained
	    environments.</p>
          <p>
	    Own Id: OTP-11009</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 0.18</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Fix subjectPublicKeyInfo type comment in public_key.
	    Thanks to Ryosuke Nakai.</p>
          <p>
	    Own Id: OTP-10670</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    public_key now supports CRL validation and documents the
	    function public_key:pkix_path_validation/3</p>
          <p>
	    Own Id: OTP-7045</p>
        </item>
        <item>
	    <p> Some examples overflowing the width of PDF pages have
	    been corrected. </p>
          <p>
	    Own Id: OTP-10665</p>
        </item>
        <item>
          <p>
	    Fixed typo's in public_key spec.</p>
          <p>
	    Own Id: OTP-10723</p>
        </item>
        <item>
          <p>
	    Corrected PKCS-10 documentation and added some PKCS-9
	    support that is fairly commonly used by PKCS-10. Full
	    support for PKCS-9 will be added later.</p>
          <p>
	    Own Id: OTP-10767</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 0.17</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    ssh_decode now handles comments, at the end of the line,
	    containing with spaces correctly</p>
          <p>
	    Own Id: OTP-9361</p>
        </item>
        <item>
          <p>
	    Add missing references to sha224 and sha384</p>
          <p>
	    Own Id: OTP-9362 Aux Id: seq12116 </p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    public_key now supports PKCS-10 and includes experimental
	    support for PKCS-7</p>
          <p>
	    Own Id: OTP-10509 Aux Id: kunagi-291 [202] </p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 0.16</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Add crypto and public_key support for the hash functions
	    SHA224, SHA256, SHA384 and SHA512 and also hmac and
	    rsa_sign/verify support using these hash functions.
	    Thanks to Andreas Schultz for making a prototype.</p>
          <p>
	    Own Id: OTP-9908</p>
        </item>
        <item>
          <p>
	    Optimize RSA private key handling in <c>crypto</c> and
	    <c>public_key</c>.</p>
          <p>
	    Own Id: OTP-10065</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 0.15</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Changed ssh implementation to use the public_key
	    application for all public key handling. This is also a
	    first step for enabling a callback API for supplying
	    public keys and handling keys protected with password
	    phrases. </p>
          <p>
	    Additionally the test suites where improved so that they
	    do not copy the users keys to test server directories as
	    this is a security liability. Also ipv6 and file access
	    issues found in the process has been fixed.</p>
          <p>
	    This change also solves OTP-7677 and OTP-7235</p>
          <p>
	    This changes also involves some updates to public_keys
	    ssh-functions.</p>
          <p>
	    Own Id: OTP-9911</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 0.14</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    public_key, ssl and crypto now supports PKCS-8</p>
          <p>
	    Own Id: OTP-9312</p>
        </item>
        <item>
          <p>
	    The asn1 decoder/encoder now uses a runtime nif from the
	    asn1 application if it is available.</p>
          <p>
	    Own Id: OTP-9414</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 0.13</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    replace "a ssl" with "an ssl" reindent
	    pkix_path_validation/3 Trivial documentation fixes
	    (Thanks to Christian von Roques )</p>
          <p>
	    Own Id: OTP-9464</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 0.12</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    The public_key application now supports encode/decode of
	    ssh public-key files.</p>
          <p>
	    Own Id: OTP-9144</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 0.11</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Allows the public_key module to decode and encode RSA and
	    DSA keys encoded using the SubjectPublicKeyInfo format.
	    When pem_entry_encode is called on an RSA or DSA public
	    key type, the key is wrapped in the SubjectPublicKeyInfo
	    format.</p>
          <p>
	    Own Id: OTP-9061</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 0.10</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Improved dialyzer specs.</p>
          <p>
	    Own Id: OTP-8964</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 0.9</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Updated ssl to ignore CA certs that violate the asn1-spec
	    for a certificate, and updated public key asn1 spec to
	    handle inherited DSS-params.</p>
          <p>
	    Own Id: OTP-7884</p>
        </item>
        <item>
          <p>
	    Changed ssl implementation to retain backwards
	    compatibility for old option {verify, 0} that shall be
	    equivalent to {verify, verify_none}, also separate the
	    cases unknown ca and selfsigned peer cert, and restored
	    return value of deprecated function
	    public_key:pem_to_der/1.</p>
          <p>
	    Own Id: OTP-8858</p>
        </item>
        <item>
          <p>
	    Better handling of v1 and v2 certificates. V1 and v2
	    certificates does not have any extensions so then
	    validate_extensions should just accept that there are
	    none and not end up in missing_basic_constraints clause.</p>
          <p>
	    Own Id: OTP-8867</p>
        </item>
        <item>
          <p>
	    Changed the verify fun so that it differentiate between
	    the peer certificate and CA certificates by using
	    valid_peer or valid as the second argument to the verify
	    fun. It may not always be trivial or even possible to
	    know when the peer certificate is reached otherwise.</p>
          <p>
	    *** POTENTIAL INCOMPATIBILITY ***</p>
          <p>
	    Own Id: OTP-8873</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 0.8</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Handling of unknown CA certificates was changed in ssl
	    and public_key to work as intended.</p>
          <p>
	    Own Id: OTP-8788</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Revise the public_key API - Cleaned up and documented the
	    public_key API to make it useful for general use, also
	    changed ssl to use the new API.</p>
          <p>
	    Own Id: OTP-8722</p>
        </item>
        <item>
          <p>
	    Added the functionality so that the verification fun will
	    be called when a certificate is considered valid by the
	    path validation to allow access to each certificate in
	    the path to the user application. Also try to verify
	    subject-AltName, if unable to verify it let the
	    application verify it.</p>
          <p>
	    Own Id: OTP-8825</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 0.7</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
            Certificates without any extensions could not be handled
            by public_key.</p>
          <p>
            Own Id: OTP-8626</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
            Code cleanup and minor bugfixes.</p>
          <p>
            Own Id: OTP-8649</p>
        </item>
      </list>
    </section>

</section>

<section><title>Public_Key 0.6</title>

<section><title>Improvements and New Features</title>
<list>
  <item>
    <p>
      Support for Diffie-Hellman. ssl-3.11 requires
    public_key-0.6.</p>
    <p>
    Own Id: OTP-7046</p>
  </item>
  <item>
    <p>
    Moved extended key usage test for ssl values to ssl.</p>
    <p>
    Own Id: OTP-8553 Aux Id: seq11541, OTP-8554 </p>
  </item>
</list>
</section>

</section>

<section><title>Public_Key 0.5</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
	  <p>Added <c>public_key:pkix_transform/2</c> to enable
            ssl to send CA list during Certificate Request.</p> 
	  <p><c>NOTE</c>: SSL (new_ssl) requires public_key-0.5.
	    ssl usage.</p>
          <p>Own Id: OTP-8372</p>
        </item>
      </list>
    </section>

</section>

  <section><title>Public_Key 0.4</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
            The documentation is now built with open source tools
            (xsltproc and fop) that exists on most platforms. One
            visible change is that the frames are removed.</p>
          <p>
            Own Id: OTP-8250</p>
        </item>
      </list>
    </section>

  </section>

  <section><title>Public_Key 0.3</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
            Unknown attributes in certificates are left encoded
            instead of crashing. Patch by Will "wglozer" thanks.</p>
          <p>
            Own Id: OTP-8100</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
            Allow public_key:pem_to_der/[1,2] to take a binary as
            argument in addition to a filename. Patch by Geoff Cant,
            thanks.</p>
          <p>
            Own Id: OTP-8142</p>
        </item>
      </list>
    </section>

  </section>

<section><title>Public_Key 0.2</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
            X509 certificate handling has been extended and improved
            as a result of more extensive testing of both the ssl
            and public_key application. Even more extensions of the
            certificate handling is yet to be implemented.</p>
          <p>
            Own Id: OTP-7860</p>
        </item>
      </list>
    </section>

</section>
  
<section><title>Public_Key 0.1</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
            First version.</p>
          <p>
            Own Id: OTP-7637</p>
        </item>
      </list>
    </section>

</section>

  
</chapter>
