'java.lang.NoClassDefFoundError: org/bouncycastle/asn1/ASN1Encodable reading encrypted-pdf-file

I have a "java client" that reads a encrypted-pdf-file that is generated in another different client. The part of the client code where the pdf file is generated:

        File destFile = new File("/var/desa/apps/prueba/PdfFile1.pdf");
        JRPdfExporter exporter = new JRPdfExporter();
        exporter.setExporterInput(new SimpleExporterInput(jasperPrint));
        exporter.setExporterOutput(new SimpleOutputStreamExporterOutput(destFile));
        
        SimplePdfExporterConfiguration configuration = new SimplePdfExporterConfiguration();
        **configuration.setEncrypted(true);
        configuration.set128BitKey(true);
        configuration.setOwnerPassword("12345");
        configuration.setUserPassword("12345");
        configuration.setPermissions(PdfWriter.ALLOW_SCREENREADERS);**
        
        exporter.setConfiguration(configuration);
        exporter.exportReport();

When I want to read the encrypted-pdf-file in my java client, I´m doing this:

        PdfReader reader = new PdfReader("/var/desa/apps/prueba/PdfFile1.pdf", ("12345".getBytes(java.nio.charset.StandardCharsets.UTF_8)));

but it throws a java.lang.ClassNotFoundException:

    Exception in thread "main" **java.lang.NoClassDefFoundError: org/bouncycastle/asn1/ASN1Encodable**
    at com.itextpdf.text.pdf.PdfEncryption.<init>(PdfEncryption.java:149)
    at com.itextpdf.text.pdf.PdfReader.readDecryptedDocObj(PdfReader.java:1013)
    at com.itextpdf.text.pdf.PdfReader.readDocObj(PdfReader.java:1411)
    at com.itextpdf.text.pdf.PdfReader.readPdf(PdfReader.java:721)
    at com.itextpdf.text.pdf.PdfReader.<init>(PdfReader.java:181)
    at com.itextpdf.text.pdf.PdfReader.<init>(PdfReader.java:219)
    at com.itextpdf.text.pdf.PdfReader.<init>(PdfReader.java:207)
    at com.itextpdf.text.pdf.PdfReader.<init>(PdfReader.java:197)
    at es.tirea.sgpd.pdf.SgpdCartasPdf.modificarCarta(SgpdCartasPdf.java:341)
    at es.tirea.sgpd.servicios.impl.SgpdServicioClientes.borradoDireccionCarta(SgpdServicioClientes.java:978)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:198)
    at com.sun.proxy.$Proxy21.borradoDireccionCarta(Unknown Source)
    at es.tirea.sgpd.clientes.SgpdBorradoDirecciones.ejecuta(SgpdBorradoDirecciones.java:129)
    at es.tirea.sgpd.clientes.base.SgpdClienteBase.ejecutaPrincipal(SgpdClienteBase.java:67)
    at es.tirea.sgpd.clientes.base.SgpdClienteBase.mainPrincipal(SgpdClienteBase.java:92)
    at es.tirea.sgpd.clientes.SgpdBorradoDirecciones.main(SgpdBorradoDirecciones.java:36)
    
    Caused by: **java.lang.ClassNotFoundException: org.bouncycastle.asn1.ASN1Encodable**
    at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 21 more

I have this in my build-props.xml file:

 <property name="lib.textpdf.jar" value="${tirea.3lib}/itextpdf-5.5.13.jar" />
 <property name="lib.itext.jar" value="${tirea.3lib}/itext-2.1.7.js6.jar" />
 <property name="lib.textxtra.jar" value="${tirea.3lib}/itext-xtra-5.3.1.jar" />
 <property name="lib.bcprov.jar"   value="${tirea.3lib}/bcprov-jdk15on-156.jar" />

and my build.xml

    <!-- ###################################################### -->
    <!-- # Classpath                                          # -->
    <!-- ###################################################### -->
    <path id="project.class.path">
            <pathelement path="${java.class.path}"/>
            [...]
            <pathelement path="${lib.itext.jar}"/>
            <pathelement path="${lib.textpdf.jar}"/>
            <pathelement path="${lib.textxtra.jar}"/>
            <pathelement path="${lib.bcprov.jar}"/>
    </path>

It compiles ok and all the libraries are in the correct directories, any idea?

javaitextclassnotfoundexception


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