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xmlsec1-devel-1.2.16-3.fc14.x86_64.rpm

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<br clear="all"><div class="SECT1">
<h1 class="SECT1"><a name="XMLSEC-EXAMPLES-SIGN-TEMPLATE-FILE">Signing a template file.</a></h1>
<br clear="all"><div class="SECT2">
<h2 class="SECT2"><a name="XMLSEC-EXAMPLE-SIGN1">sign1.c</a></h2>
<p></p>
<div class="INFORMALEXAMPLE">
<p></p>
<a name="AEN650"></a><pre class="PROGRAMLISTING">/** 
 * XML Security Library example: Signing a template file.
 * 
 * Signs a template file using a key from PEM file
 * 
 * Usage: 
 *      ./sign1 &lt;xml-tmpl&gt; &lt;pem-key&gt; 
 *
 * Example:
 *      ./sign1 sign1-tmpl.xml rsakey.pem &gt; sign1-res.xml
 *
 * The result signature could be validated using verify1 example:
 *      ./verify1 sign1-res.xml rsapub.pem
 *
 * This is free software; see Copyright file in the source
 * distribution for preciese wording.
 * 
 * Copyright (C) 2002-2003 Aleksey Sanin &lt;aleksey@aleksey.com&gt;
 */
#include &lt;stdlib.h&gt;
#include &lt;string.h&gt;
#include &lt;assert.h&gt;

#include &lt;libxml/tree.h&gt;
#include &lt;libxml/xmlmemory.h&gt;
#include &lt;libxml/parser.h&gt;

#ifndef XMLSEC_NO_XSLT
#include &lt;libxslt/xslt.h&gt;
#endif /* XMLSEC_NO_XSLT */

#include &lt;xmlsec/xmlsec.h&gt;
#include &lt;xmlsec/xmltree.h&gt;
#include &lt;xmlsec/xmldsig.h&gt;
#include &lt;xmlsec/crypto.h&gt;

int sign_file(const char* tmpl_file, const char* key_file);

int 
main(int argc, char **argv) {
    assert(argv);

    if(argc != 3) {
        fprintf(stderr, "Error: wrong number of arguments.\n");
        fprintf(stderr, "Usage: %s &lt;tmpl-file&gt; &lt;key-file&gt;\n", argv[0]);
        return(1);
    }

    /* Init libxml and libxslt libraries */
    xmlInitParser();
    LIBXML_TEST_VERSION
    xmlLoadExtDtdDefaultValue = XML_DETECT_IDS | XML_COMPLETE_ATTRS;
    xmlSubstituteEntitiesDefault(1);
#ifndef XMLSEC_NO_XSLT
    xmlIndentTreeOutput = 1; 
#endif /* XMLSEC_NO_XSLT */
                
    /* Init xmlsec library */
    if(xmlSecInit() &lt; 0) {
        fprintf(stderr, "Error: xmlsec initialization failed.\n");
        return(-1);
    }

    /* Check loaded library version */
    if(xmlSecCheckVersion() != 1) {
        fprintf(stderr, "Error: loaded xmlsec library version is not compatible.\n");
        return(-1);
    }

    /* Load default crypto engine if we are supporting dynamic
     * loading for xmlsec-crypto libraries. Use the crypto library
     * name ("openssl", "nss", etc.) to load corresponding 
     * xmlsec-crypto library.
     */
#ifdef XMLSEC_CRYPTO_DYNAMIC_LOADING
    if(xmlSecCryptoDLLoadLibrary(BAD_CAST XMLSEC_CRYPTO) &lt; 0) {
        fprintf(stderr, "Error: unable to load default xmlsec-crypto library. Make sure\n"
                        "that you have it installed and check shared libraries path\n"
                        "(LD_LIBRARY_PATH) envornment variable.\n");
        return(-1);     
    }
#endif /* XMLSEC_CRYPTO_DYNAMIC_LOADING */

    /* Init crypto library */
    if(xmlSecCryptoAppInit(NULL) &lt; 0) {
        fprintf(stderr, "Error: crypto initialization failed.\n");
        return(-1);
    }

    /* Init xmlsec-crypto library */
    if(xmlSecCryptoInit() &lt; 0) {
        fprintf(stderr, "Error: xmlsec-crypto initialization failed.\n");
        return(-1);
    }

    if(sign_file(argv[1], argv[2]) &lt; 0) {
        return(-1);
    }    
    
    /* Shutdown xmlsec-crypto library */
    xmlSecCryptoShutdown();
    
    /* Shutdown crypto library */
    xmlSecCryptoAppShutdown();
    
    /* Shutdown xmlsec library */
    xmlSecShutdown();

    /* Shutdown libxslt/libxml */
#ifndef XMLSEC_NO_XSLT
    xsltCleanupGlobals();            
#endif /* XMLSEC_NO_XSLT */
    xmlCleanupParser();
    
    return(0);
}

/** 
 * sign_file:
 * @tmpl_file:          the signature template file name.
 * @key_file:           the PEM private key file name.
 *
 * Signs the #tmpl_file using private key from #key_file.
 *
 * Returns 0 on success or a negative value if an error occurs.
 */
int 
sign_file(const char* tmpl_file, const char* key_file) {
    xmlDocPtr doc = NULL;
    xmlNodePtr node = NULL;
    xmlSecDSigCtxPtr dsigCtx = NULL;
    int res = -1;
    
    assert(tmpl_file);
    assert(key_file);

    /* load template */
    doc = xmlParseFile(tmpl_file);
    if ((doc == NULL) || (xmlDocGetRootElement(doc) == NULL)){
        fprintf(stderr, "Error: unable to parse file \"%s\"\n", tmpl_file);
        goto done;      
    }
    
    /* find start node */
    node = xmlSecFindNode(xmlDocGetRootElement(doc), xmlSecNodeSignature, xmlSecDSigNs);
    if(node == NULL) {
        fprintf(stderr, "Error: start node not found in \"%s\"\n", tmpl_file);
        goto done;      
    }

    /* create signature context, we don't need keys manager in this example */
    dsigCtx = xmlSecDSigCtxCreate(NULL);
    if(dsigCtx == NULL) {
        fprintf(stderr,"Error: failed to create signature context\n");
        goto done;
    }

    /* load private key, assuming that there is not password */
    dsigCtx-&gt;signKey = xmlSecCryptoAppKeyLoad(key_file, xmlSecKeyDataFormatPem, NULL, NULL, NULL);
    if(dsigCtx-&gt;signKey == NULL) {
        fprintf(stderr,"Error: failed to load private pem key from \"%s\"\n", key_file);
        goto done;
    }

    /* set key name to the file name, this is just an example! */
    if(xmlSecKeySetName(dsigCtx-&gt;signKey, key_file) &lt; 0) {
        fprintf(stderr,"Error: failed to set key name for key from \"%s\"\n", key_file);
        goto done;
    }

    /* sign the template */
    if(xmlSecDSigCtxSign(dsigCtx, node) &lt; 0) {
        fprintf(stderr,"Error: signature failed\n");
        goto done;
    }
        
    /* print signed document to stdout */
    xmlDocDump(stdout, doc);
    
    /* success */
    res = 0;

done:    
    /* cleanup */
    if(dsigCtx != NULL) {
        xmlSecDSigCtxDestroy(dsigCtx);
    }
    
    if(doc != NULL) {
        xmlFreeDoc(doc); 
    }
    return(res);
}
</pre>
<p></p>
</div>
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<br clear="all"><div class="SECT2">
<h2 class="SECT2"><a name="XMLSEC-EXAMPLE-SIGN1-TMPL">sign1-tmpl.xml</a></h2>
<p></p>
<div class="INFORMALEXAMPLE">
<p></p>
<a name="AEN655"></a><pre class="PROGRAMLISTING">&lt;?xml version="1.0" encoding="UTF-8"?&gt;
&lt;!-- 
XML Security Library example: Simple signature template file for sign1 example. 
--&gt;
&lt;Envelope xmlns="urn:envelope"&gt;
  &lt;Data&gt;
	Hello, World!
  &lt;/Data&gt;
  &lt;Signature xmlns="http://www.w3.org/2000/09/xmldsig#"&gt;
    &lt;SignedInfo&gt;
      &lt;CanonicalizationMethod Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315" /&gt;
      &lt;SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1" /&gt;
      &lt;Reference URI=""&gt;
        &lt;Transforms&gt;
          &lt;Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature" /&gt;
        &lt;/Transforms&gt;
        &lt;DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1" /&gt;
        &lt;DigestValue&gt;&lt;/DigestValue&gt;
      &lt;/Reference&gt;
    &lt;/SignedInfo&gt;
    &lt;SignatureValue/&gt;
    &lt;KeyInfo&gt;
	&lt;KeyName/&gt;
    &lt;/KeyInfo&gt;
  &lt;/Signature&gt;
&lt;/Envelope&gt;
</pre>
<p></p>
</div>
</div>
<br clear="all"><div class="SECT2">
<h2 class="SECT2"><a name="XMLSEC-EXAMPLE-SIGN1-RES">sign1-res.xml</a></h2>
<p></p>
<div class="INFORMALEXAMPLE">
<p></p>
<a name="AEN660"></a><pre class="PROGRAMLISTING">&lt;?xml version="1.0" encoding="UTF-8"?&gt;
&lt;!-- 
XML Security Library example: Signed file (sign1 example). 
--&gt;
&lt;Envelope xmlns="urn:envelope"&gt;
  &lt;Data&gt;
	Hello, World!
  &lt;/Data&gt;
  &lt;Signature xmlns="http://www.w3.org/2000/09/xmldsig#"&gt;
    &lt;SignedInfo&gt;
      &lt;CanonicalizationMethod Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"/&gt;
      &lt;SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"/&gt;
      &lt;Reference URI=""&gt;
        &lt;Transforms&gt;
          &lt;Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/&gt;
        &lt;/Transforms&gt;
        &lt;DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/&gt;
        &lt;DigestValue&gt;9H/rQr2Axe9hYTV2n/tCp+3UIQQ=&lt;/DigestValue&gt;
      &lt;/Reference&gt;
    &lt;/SignedInfo&gt;
    &lt;SignatureValue&gt;Mx4psIy9/UY+u8QBJRDrwQWKRaCGz0WOVftyDzAe6WHAFSjMNr7qb2ojq9kdipT8
Oub5q2OQ7mzdSLiiejkrO1VeqM/90yEIGI4En6KEB6ArEzw+iq4N1wm6EptcyxXx
M9StAOOa9ilWYqR9Tfx3SW1urUIuKYgUitxsONiUHBVaW6HeX51bsXoTF++4ZI+D
jiPBjN4HHmr0cbJ6BXk91S27ffZIfp1Qj5nL9onFLUGbR6EFgu2luiRzQbPuM2tP
XxyI7GZ8AfHnRJK28ARvBC9oi+O1ej20S79CIV7gdBxbLbFprozBHAwOEC57YgJc
x+YEjSjcO7SBIR1FiUA7pw==&lt;/SignatureValue&gt;
    &lt;KeyInfo&gt;
	&lt;KeyName&gt;rsakey.pem&lt;/KeyName&gt;
    &lt;/KeyInfo&gt;
  &lt;/Signature&gt;
&lt;/Envelope&gt;</pre>
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