diff options
Diffstat (limited to 'prov/src/main/jdk1.4/org/spongycastle/jcajce/provider/asymmetric/rsa/AlgorithmParametersSpi.java')
| -rw-r--r-- | prov/src/main/jdk1.4/org/spongycastle/jcajce/provider/asymmetric/rsa/AlgorithmParametersSpi.java | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/prov/src/main/jdk1.4/org/spongycastle/jcajce/provider/asymmetric/rsa/AlgorithmParametersSpi.java b/prov/src/main/jdk1.4/org/spongycastle/jcajce/provider/asymmetric/rsa/AlgorithmParametersSpi.java new file mode 100644 index 00000000..eb66bcf3 --- /dev/null +++ b/prov/src/main/jdk1.4/org/spongycastle/jcajce/provider/asymmetric/rsa/AlgorithmParametersSpi.java @@ -0,0 +1,217 @@ +package org.spongycastle.jcajce.provider.asymmetric.rsa; + +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.security.spec.AlgorithmParameterSpec; +import java.security.spec.InvalidParameterSpecException; +import java.security.spec.PSSParameterSpec; + +import org.spongycastle.asn1.ASN1Integer; +import org.spongycastle.asn1.DEROutputStream; +import org.spongycastle.asn1.pkcs.RSAESOAEPparams; +import org.spongycastle.asn1.pkcs.RSASSAPSSparams; + +public abstract class AlgorithmParametersSpi + extends java.security.AlgorithmParametersSpi +{ + protected boolean isASN1FormatString(String format) + { + return format == null || format.equals("ASN.1"); + } + + protected AlgorithmParameterSpec engineGetParameterSpec( + Class paramSpec) + throws InvalidParameterSpecException + { + if (paramSpec == null) + { + throw new NullPointerException("argument to getParameterSpec must not be null"); + } + + return localEngineGetParameterSpec(paramSpec); + } + + protected abstract AlgorithmParameterSpec localEngineGetParameterSpec(Class paramSpec) + throws InvalidParameterSpecException; + + public static class OAEP + extends AlgorithmParametersSpi + { + AlgorithmParameterSpec currentSpec; + + /** + * Return the PKCS#1 ASN.1 structure RSAES-OAEP-params. + */ + protected byte[] engineGetEncoded() + { + return null; + } + + protected byte[] engineGetEncoded( + String format) + { + if (isASN1FormatString(format) || format.equalsIgnoreCase("X.509")) + { + return engineGetEncoded(); + } + + return null; + } + + protected AlgorithmParameterSpec localEngineGetParameterSpec( + Class paramSpec) + throws InvalidParameterSpecException + { + throw new InvalidParameterSpecException("unknown parameter spec passed to OAEP parameters object."); + } + + protected void engineInit( + AlgorithmParameterSpec paramSpec) + throws InvalidParameterSpecException + { + this.currentSpec = paramSpec; + } + + protected void engineInit( + byte[] params) + throws IOException + { + try + { + RSAESOAEPparams oaepP = RSAESOAEPparams.getInstance(params); + + throw new IOException("Operation not supported"); + } + catch (ClassCastException e) + { + throw new IOException("Not a valid OAEP Parameter encoding."); + } + catch (ArrayIndexOutOfBoundsException e) + { + throw new IOException("Not a valid OAEP Parameter encoding."); + } + } + + protected void engineInit( + byte[] params, + String format) + throws IOException + { + if (format.equalsIgnoreCase("X.509") + || format.equalsIgnoreCase("ASN.1")) + { + engineInit(params); + } + else + { + throw new IOException("Unknown parameter format " + format); + } + } + + protected String engineToString() + { + return "OAEP Parameters"; + } + } + + public static class PSS + extends AlgorithmParametersSpi + { + PSSParameterSpec currentSpec; + + /** + * Return the PKCS#1 ASN.1 structure RSASSA-PSS-params. + */ + protected byte[] engineGetEncoded() + throws IOException + { + ByteArrayOutputStream bOut = new ByteArrayOutputStream(); + DEROutputStream dOut = new DEROutputStream(bOut); + PSSParameterSpec pssSpec = (PSSParameterSpec)currentSpec; + RSASSAPSSparams pssP = new RSASSAPSSparams(RSASSAPSSparams.DEFAULT_HASH_ALGORITHM, RSASSAPSSparams.DEFAULT_MASK_GEN_FUNCTION, new ASN1Integer(pssSpec.getSaltLength()), RSASSAPSSparams.DEFAULT_TRAILER_FIELD); + + dOut.writeObject(pssP); + dOut.close(); + + return bOut.toByteArray(); + } + + protected byte[] engineGetEncoded( + String format) + throws IOException + { + if (format.equalsIgnoreCase("X.509") + || format.equalsIgnoreCase("ASN.1")) + { + return engineGetEncoded(); + } + + return null; + } + + protected AlgorithmParameterSpec localEngineGetParameterSpec( + Class paramSpec) + throws InvalidParameterSpecException + { + if (paramSpec == PSSParameterSpec.class && currentSpec != null) + { + return currentSpec; + } + + throw new InvalidParameterSpecException("unknown parameter spec passed to PSS parameters object."); + } + + protected void engineInit( + AlgorithmParameterSpec paramSpec) + throws InvalidParameterSpecException + { + if (!(paramSpec instanceof PSSParameterSpec)) + { + throw new InvalidParameterSpecException("PSSParameterSpec required to initialise an PSS algorithm parameters object"); + } + + this.currentSpec = (PSSParameterSpec)paramSpec; + } + + protected void engineInit( + byte[] params) + throws IOException + { + try + { + RSASSAPSSparams pssP = RSASSAPSSparams.getInstance(params); + + currentSpec = new PSSParameterSpec( + pssP.getSaltLength().intValue()); + } + catch (ClassCastException e) + { + throw new IOException("Not a valid PSS Parameter encoding."); + } + catch (ArrayIndexOutOfBoundsException e) + { + throw new IOException("Not a valid PSS Parameter encoding."); + } + } + + protected void engineInit( + byte[] params, + String format) + throws IOException + { + if (isASN1FormatString(format) || format.equalsIgnoreCase("X.509")) + { + engineInit(params); + } + else + { + throw new IOException("Unknown parameter format " + format); + } + } + + protected String engineToString() + { + return "PSS Parameters"; + } + } +} |