diff options
Diffstat (limited to 'pkix/src/main/jdk1.1/org/spongycastle/cms/SignerInfoGenerator.java')
| -rw-r--r-- | pkix/src/main/jdk1.1/org/spongycastle/cms/SignerInfoGenerator.java | 291 |
1 files changed, 291 insertions, 0 deletions
diff --git a/pkix/src/main/jdk1.1/org/spongycastle/cms/SignerInfoGenerator.java b/pkix/src/main/jdk1.1/org/spongycastle/cms/SignerInfoGenerator.java new file mode 100644 index 00000000..47028b99 --- /dev/null +++ b/pkix/src/main/jdk1.1/org/spongycastle/cms/SignerInfoGenerator.java @@ -0,0 +1,291 @@ +package org.spongycastle.cms; + +import java.io.IOException; +import java.io.OutputStream; +import java.util.Collections; +import java.util.HashMap; +import java.util.Map; + +import org.spongycastle.asn1.ASN1Encoding; +import org.spongycastle.asn1.ASN1ObjectIdentifier; +import org.spongycastle.asn1.ASN1Set; +import org.spongycastle.asn1.DEROctetString; +import org.spongycastle.asn1.DERSet; +import org.spongycastle.asn1.cms.AttributeTable; +import org.spongycastle.asn1.cms.SignerIdentifier; +import org.spongycastle.asn1.cms.SignerInfo; +import org.spongycastle.asn1.x509.AlgorithmIdentifier; +import org.spongycastle.cert.X509CertificateHolder; +import org.spongycastle.operator.ContentSigner; +import org.spongycastle.operator.DefaultDigestAlgorithmIdentifierFinder; +import org.spongycastle.operator.DigestAlgorithmIdentifierFinder; +import org.spongycastle.operator.DigestCalculator; +import org.spongycastle.operator.DigestCalculatorProvider; +import org.spongycastle.operator.OperatorCreationException; +import org.spongycastle.util.Arrays; +import org.spongycastle.util.io.TeeOutputStream; + +public class SignerInfoGenerator +{ + private SignerIdentifier signerIdentifier; + private CMSAttributeTableGenerator sAttrGen; + private CMSAttributeTableGenerator unsAttrGen; + private ContentSigner signer; + private DigestCalculator digester; + private DigestAlgorithmIdentifierFinder digAlgFinder = new DefaultDigestAlgorithmIdentifierFinder(); + private CMSSignatureEncryptionAlgorithmFinder sigEncAlgFinder; + + private byte[] calculatedDigest = null; + private X509CertificateHolder certHolder; + + SignerInfoGenerator( + SignerIdentifier signerIdentifier, + ContentSigner signer, + DigestCalculatorProvider digesterProvider, + CMSSignatureEncryptionAlgorithmFinder sigEncAlgFinder) + throws OperatorCreationException + { + this(signerIdentifier, signer, digesterProvider, sigEncAlgFinder, false); + } + + SignerInfoGenerator( + SignerIdentifier signerIdentifier, + ContentSigner signer, + DigestCalculatorProvider digesterProvider, + CMSSignatureEncryptionAlgorithmFinder sigEncAlgFinder, + boolean isDirectSignature) + throws OperatorCreationException + { + this.signerIdentifier = signerIdentifier; + this.signer = signer; + + if (digesterProvider != null) + { + this.digester = digesterProvider.get(digAlgFinder.find(signer.getAlgorithmIdentifier())); + } + else + { + this.digester = null; + } + + if (isDirectSignature) + { + this.sAttrGen = null; + this.unsAttrGen = null; + } + else + { + this.sAttrGen = new DefaultSignedAttributeTableGenerator(); + this.unsAttrGen = null; + } + + this.sigEncAlgFinder = sigEncAlgFinder; + } + + public SignerInfoGenerator( + SignerInfoGenerator original, + CMSAttributeTableGenerator sAttrGen, + CMSAttributeTableGenerator unsAttrGen) + { + this.signerIdentifier = original.signerIdentifier; + this.signer = original.signer; + this.digester = original.digester; + this.sigEncAlgFinder = original.sigEncAlgFinder; + this.sAttrGen = sAttrGen; + this.unsAttrGen = unsAttrGen; + } + + SignerInfoGenerator( + SignerIdentifier signerIdentifier, + ContentSigner signer, + DigestCalculatorProvider digesterProvider, + CMSSignatureEncryptionAlgorithmFinder sigEncAlgFinder, + CMSAttributeTableGenerator sAttrGen, + CMSAttributeTableGenerator unsAttrGen) + throws OperatorCreationException + { + this.signerIdentifier = signerIdentifier; + this.signer = signer; + + if (digesterProvider != null) + { + this.digester = digesterProvider.get(digAlgFinder.find(signer.getAlgorithmIdentifier())); + } + else + { + this.digester = null; + } + + this.sAttrGen = sAttrGen; + this.unsAttrGen = unsAttrGen; + this.sigEncAlgFinder = sigEncAlgFinder; + } + + public SignerIdentifier getSID() + { + return signerIdentifier; + } + + public int getGeneratedVersion() + { + return signerIdentifier.isTagged() ? 3 : 1; + } + + public boolean hasAssociatedCertificate() + { + return certHolder != null; + } + + public X509CertificateHolder getAssociatedCertificate() + { + return certHolder; + } + + public AlgorithmIdentifier getDigestAlgorithm() + { + if (digester != null) + { + return digester.getAlgorithmIdentifier(); + } + + return digAlgFinder.find(signer.getAlgorithmIdentifier()); + } + + public OutputStream getCalculatingOutputStream() + { + if (digester != null) + { + if (sAttrGen == null) + { + return new TeeOutputStream(digester.getOutputStream(), signer.getOutputStream()); + } + return digester.getOutputStream(); + } + else + { + return signer.getOutputStream(); + } + } + + public SignerInfo generate(ASN1ObjectIdentifier contentType) + throws CMSException + { + try + { + /* RFC 3852 5.4 + * The result of the message digest calculation process depends on + * whether the signedAttrs field is present. When the field is absent, + * the result is just the message digest of the content as described + * + * above. When the field is present, however, the result is the message + * digest of the complete DER encoding of the SignedAttrs value + * contained in the signedAttrs field. + */ + ASN1Set signedAttr = null; + + AlgorithmIdentifier digestAlg = null; + + if (sAttrGen != null) + { + digestAlg = digester.getAlgorithmIdentifier(); + calculatedDigest = digester.getDigest(); + Map parameters = getBaseParameters(contentType, digester.getAlgorithmIdentifier(), calculatedDigest); + AttributeTable signed = sAttrGen.getAttributes(Collections.unmodifiableMap(parameters)); + + signedAttr = getAttributeSet(signed); + + // sig must be composed from the DER encoding. + OutputStream sOut = signer.getOutputStream(); + + sOut.write(signedAttr.getEncoded(ASN1Encoding.DER)); + + sOut.close(); + } + else + { + if (digester != null) + { + digestAlg = digester.getAlgorithmIdentifier(); + calculatedDigest = digester.getDigest(); + } + else + { + digestAlg = digAlgFinder.find(signer.getAlgorithmIdentifier()); + calculatedDigest = null; + } + } + + byte[] sigBytes = signer.getSignature(); + + ASN1Set unsignedAttr = null; + if (unsAttrGen != null) + { + Map parameters = getBaseParameters(contentType, digestAlg, calculatedDigest); + parameters.put(CMSAttributeTableGenerator.SIGNATURE, Arrays.clone(sigBytes)); + + AttributeTable unsigned = unsAttrGen.getAttributes(Collections.unmodifiableMap(parameters)); + + unsignedAttr = getAttributeSet(unsigned); + } + + AlgorithmIdentifier digestEncryptionAlgorithm = sigEncAlgFinder.findEncryptionAlgorithm(signer.getAlgorithmIdentifier()); + + return new SignerInfo(signerIdentifier, digestAlg, + signedAttr, digestEncryptionAlgorithm, new DEROctetString(sigBytes), unsignedAttr); + } + catch (IOException e) + { + throw new CMSException("encoding error.", e); + } + } + + void setAssociatedCertificate(X509CertificateHolder certHolder) + { + this.certHolder = certHolder; + } + + private ASN1Set getAttributeSet( + AttributeTable attr) + { + if (attr != null) + { + return new DERSet(attr.toASN1EncodableVector()); + } + + return null; + } + + private Map getBaseParameters(ASN1ObjectIdentifier contentType, AlgorithmIdentifier digAlgId, byte[] hash) + { + Map param = new HashMap(); + + if (contentType != null) + { + param.put(CMSAttributeTableGenerator.CONTENT_TYPE, contentType); + } + + param.put(CMSAttributeTableGenerator.DIGEST_ALGORITHM_IDENTIFIER, digAlgId); + param.put(CMSAttributeTableGenerator.DIGEST, Arrays.clone(hash)); + return param; + } + + public byte[] getCalculatedDigest() + { + if (calculatedDigest != null) + { + return Arrays.clone(calculatedDigest); + } + + return null; + } + + public CMSAttributeTableGenerator getSignedAttributeTableGenerator() + { + return sAttrGen; + } + + public CMSAttributeTableGenerator getUnsignedAttributeTableGenerator() + { + return unsAttrGen; + } +} |