1 files changed, 39 insertions, 0 deletions
diff --git a/libraries/spongycastle/pkix/src/main/java/org/spongycastle/cms/bc/BcRSASignerInfoVerifierBuilder.java b/libraries/spongycastle/pkix/src/main/java/org/spongycastle/cms/bc/BcRSASignerInfoVerifierBuilder.java
new file mode 100644
index 000000000..26028e1af
--- /dev/null
+++ b/libraries/spongycastle/pkix/src/main/java/org/spongycastle/cms/bc/BcRSASignerInfoVerifierBuilder.java
@@ -0,0 +1,39 @@
+package org.spongycastle.cms.bc;
+
+import org.spongycastle.cert.X509CertificateHolder;
+import org.spongycastle.cms.CMSSignatureAlgorithmNameGenerator;
+import org.spongycastle.cms.SignerInformationVerifier;
+import org.spongycastle.crypto.params.AsymmetricKeyParameter;
+import org.spongycastle.operator.DigestAlgorithmIdentifierFinder;
+import org.spongycastle.operator.DigestCalculatorProvider;
+import org.spongycastle.operator.OperatorCreationException;
+import org.spongycastle.operator.SignatureAlgorithmIdentifierFinder;
+import org.spongycastle.operator.bc.BcRSAContentVerifierProviderBuilder;
+
+public class BcRSASignerInfoVerifierBuilder
+{
+    private BcRSAContentVerifierProviderBuilder contentVerifierProviderBuilder;
+    private DigestCalculatorProvider digestCalculatorProvider;
+    private CMSSignatureAlgorithmNameGenerator sigAlgNameGen;
+    private SignatureAlgorithmIdentifierFinder sigAlgIdFinder;
+
+    public BcRSASignerInfoVerifierBuilder(CMSSignatureAlgorithmNameGenerator sigAlgNameGen, SignatureAlgorithmIdentifierFinder sigAlgIdFinder, DigestAlgorithmIdentifierFinder digestAlgorithmFinder, DigestCalculatorProvider digestCalculatorProvider)
+    {
+        this.sigAlgNameGen = sigAlgNameGen;
+        this.sigAlgIdFinder = sigAlgIdFinder;
+        this.contentVerifierProviderBuilder = new BcRSAContentVerifierProviderBuilder(digestAlgorithmFinder);
+        this.digestCalculatorProvider = digestCalculatorProvider;
+    }
+
+    public SignerInformationVerifier build(X509CertificateHolder certHolder)
+        throws OperatorCreationException
+    {
+        return new SignerInformationVerifier(sigAlgNameGen, sigAlgIdFinder, contentVerifierProviderBuilder.build(certHolder), digestCalculatorProvider);
+    }
+
+    public SignerInformationVerifier build(AsymmetricKeyParameter pubKey)
+        throws OperatorCreationException
+    {
+        return new SignerInformationVerifier(sigAlgNameGen, sigAlgIdFinder, contentVerifierProviderBuilder.build(pubKey), digestCalculatorProvider);
+    }
+}