diff options
Diffstat (limited to 'libraries/spongycastle/pkix/src/main/java/org/spongycastle/operator/jcajce/JcaContentVerifierProviderBuilder.java')
| -rw-r--r-- | libraries/spongycastle/pkix/src/main/java/org/spongycastle/operator/jcajce/JcaContentVerifierProviderBuilder.java | 312 |
1 files changed, 312 insertions, 0 deletions
diff --git a/libraries/spongycastle/pkix/src/main/java/org/spongycastle/operator/jcajce/JcaContentVerifierProviderBuilder.java b/libraries/spongycastle/pkix/src/main/java/org/spongycastle/operator/jcajce/JcaContentVerifierProviderBuilder.java new file mode 100644 index 000000000..5db293186 --- /dev/null +++ b/libraries/spongycastle/pkix/src/main/java/org/spongycastle/operator/jcajce/JcaContentVerifierProviderBuilder.java @@ -0,0 +1,312 @@ +package org.spongycastle.operator.jcajce; + +import java.io.IOException; +import java.io.OutputStream; +import java.security.GeneralSecurityException; +import java.security.Provider; +import java.security.PublicKey; +import java.security.Signature; +import java.security.SignatureException; +import java.security.cert.CertificateEncodingException; +import java.security.cert.CertificateException; +import java.security.cert.X509Certificate; + +import org.spongycastle.asn1.x509.AlgorithmIdentifier; +import org.spongycastle.asn1.x509.SubjectPublicKeyInfo; +import org.spongycastle.cert.X509CertificateHolder; +import org.spongycastle.cert.jcajce.JcaX509CertificateHolder; +import org.spongycastle.jcajce.DefaultJcaJceHelper; +import org.spongycastle.jcajce.NamedJcaJceHelper; +import org.spongycastle.jcajce.ProviderJcaJceHelper; +import org.spongycastle.operator.ContentVerifier; +import org.spongycastle.operator.ContentVerifierProvider; +import org.spongycastle.operator.OperatorCreationException; +import org.spongycastle.operator.OperatorStreamException; +import org.spongycastle.operator.RawContentVerifier; +import org.spongycastle.operator.RuntimeOperatorException; + +public class JcaContentVerifierProviderBuilder +{ + private OperatorHelper helper = new OperatorHelper(new DefaultJcaJceHelper()); + + public JcaContentVerifierProviderBuilder() + { + } + + public JcaContentVerifierProviderBuilder setProvider(Provider provider) + { + this.helper = new OperatorHelper(new ProviderJcaJceHelper(provider)); + + return this; + } + + public JcaContentVerifierProviderBuilder setProvider(String providerName) + { + this.helper = new OperatorHelper(new NamedJcaJceHelper(providerName)); + + return this; + } + + public ContentVerifierProvider build(X509CertificateHolder certHolder) + throws OperatorCreationException, CertificateException + { + return build(helper.convertCertificate(certHolder)); + } + + public ContentVerifierProvider build(final X509Certificate certificate) + throws OperatorCreationException + { + final X509CertificateHolder certHolder; + + try + { + certHolder = new JcaX509CertificateHolder(certificate); + } + catch (CertificateEncodingException e) + { + throw new OperatorCreationException("cannot process certificate: " + e.getMessage(), e); + } + + return new ContentVerifierProvider() + { + private SignatureOutputStream stream; + + public boolean hasAssociatedCertificate() + { + return true; + } + + public X509CertificateHolder getAssociatedCertificate() + { + return certHolder; + } + + public ContentVerifier get(AlgorithmIdentifier algorithm) + throws OperatorCreationException + { + try + { + Signature sig = helper.createSignature(algorithm); + + sig.initVerify(certificate.getPublicKey()); + + stream = new SignatureOutputStream(sig); + } + catch (GeneralSecurityException e) + { + throw new OperatorCreationException("exception on setup: " + e, e); + } + + Signature rawSig = createRawSig(algorithm, certificate.getPublicKey()); + + if (rawSig != null) + { + return new RawSigVerifier(algorithm, stream, rawSig); + } + else + { + return new SigVerifier(algorithm, stream); + } + } + }; + } + + public ContentVerifierProvider build(final PublicKey publicKey) + throws OperatorCreationException + { + return new ContentVerifierProvider() + { + public boolean hasAssociatedCertificate() + { + return false; + } + + public X509CertificateHolder getAssociatedCertificate() + { + return null; + } + + public ContentVerifier get(AlgorithmIdentifier algorithm) + throws OperatorCreationException + { + SignatureOutputStream stream = createSignatureStream(algorithm, publicKey); + + Signature rawSig = createRawSig(algorithm, publicKey); + + if (rawSig != null) + { + return new RawSigVerifier(algorithm, stream, rawSig); + } + else + { + return new SigVerifier(algorithm, stream); + } + } + }; + } + + public ContentVerifierProvider build(SubjectPublicKeyInfo publicKey) + throws OperatorCreationException + { + return this.build(helper.convertPublicKey(publicKey)); + } + + private SignatureOutputStream createSignatureStream(AlgorithmIdentifier algorithm, PublicKey publicKey) + throws OperatorCreationException + { + try + { + Signature sig = helper.createSignature(algorithm); + + sig.initVerify(publicKey); + + return new SignatureOutputStream(sig); + } + catch (GeneralSecurityException e) + { + throw new OperatorCreationException("exception on setup: " + e, e); + } + } + + private Signature createRawSig(AlgorithmIdentifier algorithm, PublicKey publicKey) + { + Signature rawSig; + try + { + rawSig = helper.createRawSignature(algorithm); + + if (rawSig != null) + { + rawSig.initVerify(publicKey); + } + } + catch (Exception e) + { + rawSig = null; + } + return rawSig; + } + + private class SigVerifier + implements ContentVerifier + { + private SignatureOutputStream stream; + private AlgorithmIdentifier algorithm; + + SigVerifier(AlgorithmIdentifier algorithm, SignatureOutputStream stream) + { + this.algorithm = algorithm; + this.stream = stream; + } + + public AlgorithmIdentifier getAlgorithmIdentifier() + { + return algorithm; + } + + public OutputStream getOutputStream() + { + if (stream == null) + { + throw new IllegalStateException("verifier not initialised"); + } + + return stream; + } + + public boolean verify(byte[] expected) + { + try + { + return stream.verify(expected); + } + catch (SignatureException e) + { + throw new RuntimeOperatorException("exception obtaining signature: " + e.getMessage(), e); + } + } + } + + private class RawSigVerifier + extends SigVerifier + implements RawContentVerifier + { + private Signature rawSignature; + + RawSigVerifier(AlgorithmIdentifier algorithm, SignatureOutputStream stream, Signature rawSignature) + { + super(algorithm, stream); + this.rawSignature = rawSignature; + } + + public boolean verify(byte[] digest, byte[] expected) + { + try + { + rawSignature.update(digest); + + return rawSignature.verify(expected); + } + catch (SignatureException e) + { + throw new RuntimeOperatorException("exception obtaining raw signature: " + e.getMessage(), e); + } + } + } + + private class SignatureOutputStream + extends OutputStream + { + private Signature sig; + + SignatureOutputStream(Signature sig) + { + this.sig = sig; + } + + public void write(byte[] bytes, int off, int len) + throws IOException + { + try + { + sig.update(bytes, off, len); + } + catch (SignatureException e) + { + throw new OperatorStreamException("exception in content signer: " + e.getMessage(), e); + } + } + + public void write(byte[] bytes) + throws IOException + { + try + { + sig.update(bytes); + } + catch (SignatureException e) + { + throw new OperatorStreamException("exception in content signer: " + e.getMessage(), e); + } + } + + public void write(int b) + throws IOException + { + try + { + sig.update((byte)b); + } + catch (SignatureException e) + { + throw new OperatorStreamException("exception in content signer: " + e.getMessage(), e); + } + } + + boolean verify(byte[] expected) + throws SignatureException + { + return sig.verify(expected); + } + } +}
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