Class CMSSignedDataGenerator

java.lang.Object

org.bouncycastle.cms.CMSSignedGenerator

org.bouncycastle.cms.CMSSignedDataGenerator

public class CMSSignedDataGenerator
extends CMSSignedGenerator

general class for generating a pkcs7-signature message.

A simple example of usage, generating a detached signature.

     List             certList = new ArrayList();
     CMSTypedData     msg = new CMSProcessableByteArray("Hello world!".getBytes());

     certList.add(signCert);

     Store           certs = new JcaCertStore(certList);

     CMSSignedDataGenerator gen = new CMSSignedDataGenerator();
     ContentSigner sha1Signer = new JcaContentSignerBuilder("SHA1withRSA").setProvider("BC").build(signKP.getPrivate());

     gen.addSignerInfoGenerator(
               new JcaSignerInfoGeneratorBuilder(
                    new JcaDigestCalculatorProviderBuilder().setProvider("BC").build())
                    .build(sha1Signer, signCert));

     gen.addCertificates(certs);

     CMSSignedData sigData = gen.generate(msg, false);

Field Summary

Fields inherited from class CMSSignedGenerator

_signers, certs, crls, DATA, DIGEST_GOST3411, DIGEST_MD5, DIGEST_RIPEMD128, DIGEST_RIPEMD160, DIGEST_RIPEMD256, DIGEST_SHA1, DIGEST_SHA224, DIGEST_SHA256, DIGEST_SHA384, DIGEST_SHA512, digestAlgIdFinder, digests, ENCRYPTION_DSA, ENCRYPTION_ECDSA, ENCRYPTION_ECGOST3410, ENCRYPTION_ECGOST3410_2012_256, ENCRYPTION_ECGOST3410_2012_512, ENCRYPTION_GOST3410, ENCRYPTION_RSA, ENCRYPTION_RSA_PSS, signerGens

Constructor Summary

Constructors

Constructor	Description
CMSSignedDataGenerator()	base constructor
CMSSignedDataGenerator(DigestAlgorithmIdentifierFinder digestAlgIdFinder)	base constructor with a custom DigestAlgorithmIdentifierFinder

Method Summary

Modifier and Type	Method	Description
CMSSignedData	generate(CMSTypedData content)	Generate a CMS Signed Data object carrying a detached CMS signature.
CMSSignedData	generate(CMSTypedData content, boolean encapsulate)	Generate a CMS Signed Data object which can be carrying a detached CMS signature, or have encapsulated data, depending on the value of the encapsulated parameter.
SignerInformationStore	generateCounterSigners(SignerInformation signer)	generate a set of one or more SignerInformation objects representing counter signatures on the passed in SignerInformation object.
void	setDefiniteLengthEncoding(boolean isDefiniteLength)	Specify use of definite length rather than indefinite length encoding.

Methods inherited from class CMSSignedGenerator

addAttributeCertificate, addAttributeCertificates, addCertificate, addCertificates, addCRL, addCRLs, addOtherRevocationInfo, addOtherRevocationInfo, addSignerInfoGenerator, addSigners, getBaseParameters, getGeneratedDigests

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

CMSSignedDataGenerator

public CMSSignedDataGenerator()

base constructor

CMSSignedDataGenerator

public CMSSignedDataGenerator(DigestAlgorithmIdentifierFinder digestAlgIdFinder)

base constructor with a custom DigestAlgorithmIdentifierFinder

Method Details

setDefiniteLengthEncoding

public void setDefiniteLengthEncoding(boolean isDefiniteLength)

Specify use of definite length rather than indefinite length encoding.

Parameters:

isDefiniteLength - true use definite length, false use indefinite (default false).

generate

public CMSSignedData generate(CMSTypedData content)
                       throws CMSException

Generate a CMS Signed Data object carrying a detached CMS signature.

Parameters:

content - the content to be signed.

Throws:

CMSException

generate

public CMSSignedData generate(CMSTypedData content,
 boolean encapsulate)
                       throws CMSException

Generate a CMS Signed Data object which can be carrying a detached CMS signature, or have encapsulated data, depending on the value of the encapsulated parameter.

Parameters:

content - the content to be signed.

encapsulate - true if the content should be encapsulated in the signature, false otherwise.

Throws:

CMSException

generateCounterSigners

public SignerInformationStore generateCounterSigners(SignerInformation signer)
                                              throws CMSException

generate a set of one or more SignerInformation objects representing counter signatures on the passed in SignerInformation object.

Parameters:

signer - the signer to be countersigned

Returns:

a store containing the signers.

Throws:

CMSException