Updated build.sh to build curl, openssl, and 256k1 if needed

openssl-3.4.2/doc/man1/openssl-spkac.pod

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+=pod
+
+=begin comment
+WARNING: do not edit!
+Generated by Makefile from doc/man1/openssl-spkac.pod.in
+
+=end comment
+
+=head1 NAME
+
+openssl-spkac - SPKAC printing and generating command
+
+=head1 SYNOPSIS
+
+B<openssl> B<spkac>
+[B<-help>]
+[B<-in> I<filename>]
+[B<-out> I<filename>]
+[B<-digest> I<digest>]
+[B<-key> I<filename>|I<uri>]
+[B<-keyform> B<DER>|B<PEM>|B<P12>|B<ENGINE>]
+[B<-passin> I<arg>]
+[B<-challenge> I<string>]
+[B<-pubkey>]
+[B<-spkac> I<spkacname>]
+[B<-spksect> I<section>]
+[B<-noout>]
+[B<-verify>]
+[B<-engine> I<id>]
+[B<-provider> I<name>]
+[B<-provider-path> I<path>]
+[B<-propquery> I<propq>]
+
+=head1 DESCRIPTION
+
+This command processes Netscape signed public key and challenge
+(SPKAC) files. It can print out their contents, verify the signature and
+produce its own SPKACs from a supplied private key.
+
+=head1 OPTIONS
+
+=over 4
+
+=item B<-help>
+
+Print out a usage message.
+
+=item B<-in> I<filename>
+
+This specifies the input filename to read from or standard input if this
+option is not specified. Ignored if the B<-key> option is used.
+
+=item B<-out> I<filename>
+
+Specifies the output filename to write to or standard output by
+default.
+
+=item B<-digest> I<digest>
+
+Use the specified I<digest> to sign a created SPKAC file.
+The default digest algorithm is MD5.
+
+=item B<-key> I<filename>|I<uri>
+
+Create an SPKAC file using the private key specified by I<filename> or I<uri>.
+The B<-in>, B<-noout>, B<-spksect> and B<-verify> options are ignored if
+present.
+
+=item B<-keyform> B<DER>|B<PEM>|B<P12>|B<ENGINE>
+
+The key format; unspecified by default.
+See L<openssl-format-options(1)> for details.
+
+=item B<-passin> I<arg>
+
+The input file password source. For more information about the format of I<arg>
+see L<openssl-passphrase-options(1)>.
+
+=item B<-challenge> I<string>
+
+Specifies the challenge string if an SPKAC is being created.
+
+=item B<-spkac> I<spkacname>
+
+Allows an alternative name form the variable containing the
+SPKAC. The default is "SPKAC". This option affects both
+generated and input SPKAC files.
+
+=item B<-spksect> I<section>
+
+Allows an alternative name form the section containing the
+SPKAC. The default is the default section.
+
+=item B<-noout>
+
+Don't output the text version of the SPKAC (not used if an
+SPKAC is being created).
+
+=item B<-pubkey>
+
+Output the public key of an SPKAC (not used if an SPKAC is
+being created).
+
+=item B<-verify>
+
+Verifies the digital signature on the supplied SPKAC.
+
+=item B<-engine> I<id>
+
+See L<openssl(1)/Engine Options>.
+This option is deprecated.
+
+=item B<-provider> I<name>
+
+=item B<-provider-path> I<path>
+
+=item B<-propquery> I<propq>
+
+See L<openssl(1)/Provider Options>, L<provider(7)>, and L<property(7)>.
+
+=back
+
+=head1 EXAMPLES
+
+Print out the contents of an SPKAC:
+
+ openssl spkac -in spkac.cnf
+
+Verify the signature of an SPKAC:
+
+ openssl spkac -in spkac.cnf -noout -verify
+
+Create an SPKAC using the challenge string "hello":
+
+ openssl spkac -key key.pem -challenge hello -out spkac.cnf
+
+Example of an SPKAC, (long lines split up for clarity):
+
+ SPKAC=MIG5MGUwXDANBgkqhkiG9w0BAQEFAANLADBIAkEA\
+ 1cCoq2Wa3Ixs47uI7FPVwHVIPDx5yso105Y6zpozam135a\
+ 8R0CpoRvkkigIyXfcCjiVi5oWk+6FfPaD03uPFoQIDAQAB\
+ FgVoZWxsbzANBgkqhkiG9w0BAQQFAANBAFpQtY/FojdwkJ\
+ h1bEIYuc2EeM2KHTWPEepWYeawvHD0gQ3DngSC75YCWnnD\
+ dq+NQ3F+X4deMx9AaEglZtULwV4=
+
+=head1 NOTES
+
+A created SPKAC with suitable DN components appended can be fed to
+L<openssl-ca(1)>.
+
+SPKACs are typically generated by Netscape when a form is submitted
+containing the B<KEYGEN> tag as part of the certificate enrollment
+process.
+
+The challenge string permits a primitive form of proof of possession
+of private key. By checking the SPKAC signature and a random challenge
+string some guarantee is given that the user knows the private key
+corresponding to the public key being certified. This is important in
+some applications. Without this it is possible for a previous SPKAC
+to be used in a "replay attack".
+
+=head1 SEE ALSO
+
+L<openssl(1)>,
+L<openssl-ca(1)>
+
+=head1 HISTORY
+
+The B<-engine> option was deprecated in OpenSSL 3.0.
+
+The B<-digest> option was added in OpenSSL 3.0.
+
+=head1 COPYRIGHT
+
+Copyright 2000-2021 The OpenSSL Project Authors. All Rights Reserved.
+
+Licensed under the Apache License 2.0 (the "License").  You may not use
+this file except in compliance with the License.  You can obtain a copy
+in the file LICENSE in the source distribution or at
+L<https://www.openssl.org/source/license.html>.
+
+=cut