diff options
Diffstat (limited to 'prov/src/main/jdk1.3/org/spongycastle/jcajce/provider/asymmetric/rsa/PSSSignatureSpi.java')
| -rw-r--r-- | prov/src/main/jdk1.3/org/spongycastle/jcajce/provider/asymmetric/rsa/PSSSignatureSpi.java | 428 |
1 files changed, 428 insertions, 0 deletions
diff --git a/prov/src/main/jdk1.3/org/spongycastle/jcajce/provider/asymmetric/rsa/PSSSignatureSpi.java b/prov/src/main/jdk1.3/org/spongycastle/jcajce/provider/asymmetric/rsa/PSSSignatureSpi.java new file mode 100644 index 00000000..be4083e3 --- /dev/null +++ b/prov/src/main/jdk1.3/org/spongycastle/jcajce/provider/asymmetric/rsa/PSSSignatureSpi.java @@ -0,0 +1,428 @@ +package org.spongycastle.jcajce.provider.asymmetric.rsa; + +import java.io.ByteArrayOutputStream; +import java.security.AlgorithmParameters; +import java.security.InvalidKeyException; +import java.security.InvalidParameterException; +import java.security.PrivateKey; +import java.security.PublicKey; +import java.security.SecureRandom; +import java.security.Signature; +import java.security.SignatureException; +import java.security.interfaces.RSAPrivateKey; +import java.security.interfaces.RSAPublicKey; +import java.security.spec.AlgorithmParameterSpec; + +import org.spongycastle.crypto.AsymmetricBlockCipher; +import org.spongycastle.crypto.CipherParameters; +import org.spongycastle.crypto.CryptoException; +import org.spongycastle.crypto.Digest; +import org.spongycastle.crypto.digests.SHA1Digest; +import org.spongycastle.crypto.digests.SHA224Digest; +import org.spongycastle.crypto.digests.SHA256Digest; +import org.spongycastle.crypto.digests.SHA384Digest; +import org.spongycastle.crypto.digests.SHA512Digest; +import org.spongycastle.crypto.engines.RSABlindedEngine; +import org.spongycastle.crypto.params.ParametersWithRandom; + +public class PSSSignatureSpi + extends Signature +{ + private AlgorithmParameters engineParams; + private AsymmetricBlockCipher signer; + private Digest contentDigest; + private Digest mgfDigest; + private int saltLength; + private byte trailer; + private boolean isRaw; + private ByteArrayOutputStream bOut; + private org.spongycastle.crypto.signers.PSSSigner pss; + private CipherParameters sigParams; + + private byte getTrailer( + int trailerField) + { + if (trailerField == 1) + { + return org.spongycastle.crypto.signers.PSSSigner.TRAILER_IMPLICIT; + } + + throw new IllegalArgumentException("unknown trailer field"); + } + + private void setupContentDigest() + { + if (isRaw) + { + this.contentDigest = new NullPssDigest(mgfDigest); + } + else + { + this.contentDigest = mgfDigest; + } + } + + protected PSSSignatureSpi( + String name, + AsymmetricBlockCipher signer, + Digest digest) + { + super(name); + + this.signer = signer; + this.mgfDigest = digest; + + if (digest != null) + { + this.saltLength = digest.getDigestSize(); + } + else + { + this.saltLength = 20; + } + + this.isRaw = false; + + setupContentDigest(); + } + + // care - this constructor is actually used by outside organisations + protected PSSSignatureSpi( + String name, + AsymmetricBlockCipher signer, + Digest digest, + boolean isRaw) + { + super(name); + + this.signer = signer; + this.mgfDigest = digest; + + if (digest != null) + { + this.saltLength = digest.getDigestSize(); + } + else + { + this.saltLength = 20; + } + + this.isRaw = isRaw; + + setupContentDigest(); + } + + protected void engineInitVerify( + PublicKey publicKey) + throws InvalidKeyException + { + if (!(publicKey instanceof RSAPublicKey)) + { + throw new InvalidKeyException("Supplied key is not a RSAPublicKey instance"); + } + + sigParams = RSAUtil.generatePublicKeyParameter((RSAPublicKey)publicKey); + + if (isRaw) + { + bOut = new ByteArrayOutputStream(); + } + else + { + pss = new org.spongycastle.crypto.signers.PSSSigner(signer, contentDigest, mgfDigest, saltLength); + pss.init(false, + sigParams); + } + } + + protected void engineInitSign( + PrivateKey privateKey, + SecureRandom random) + throws InvalidKeyException + { + if (!(privateKey instanceof RSAPrivateKey)) + { + throw new InvalidKeyException("Supplied key is not a RSAPrivateKey instance"); + } + + sigParams = new ParametersWithRandom(RSAUtil.generatePrivateKeyParameter((RSAPrivateKey)privateKey), random); + + if (isRaw) + { + bOut = new ByteArrayOutputStream(); + } + else + { + pss = new org.spongycastle.crypto.signers.PSSSigner(signer, contentDigest, mgfDigest, saltLength); + pss.init(true, sigParams); + } + } + + protected void engineInitSign( + PrivateKey privateKey) + throws InvalidKeyException + { + if (!(privateKey instanceof RSAPrivateKey)) + { + throw new InvalidKeyException("Supplied key is not a RSAPrivateKey instance"); + } + + sigParams = RSAUtil.generatePrivateKeyParameter((RSAPrivateKey)privateKey); + + if (isRaw) + { + bOut = new ByteArrayOutputStream(); + } + else + { + pss = new org.spongycastle.crypto.signers.PSSSigner(signer, contentDigest, mgfDigest, saltLength); + pss.init(true, sigParams); + } + } + + protected void engineUpdate( + byte b) + throws SignatureException + { + if (isRaw) + { + bOut.write(b); + } + else + { + pss.update(b); + } + } + + protected void engineUpdate( + byte[] b, + int off, + int len) + throws SignatureException + { + if (isRaw) + { + bOut.write(b, off, len); + } + else + { + pss.update(b, off, len); + } + } + + protected byte[] engineSign() + throws SignatureException + { + try + { + if (isRaw) + { + byte[] hash = bOut.toByteArray(); + contentDigest = mgfDigest = guessDigest(hash.length); + saltLength = contentDigest.getDigestSize(); + pss = new org.spongycastle.crypto.signers.PSSSigner(signer, new NullPssDigest(contentDigest), mgfDigest, saltLength); + + pss.init(true, sigParams); + } + return pss.generateSignature(); + } + catch (CryptoException e) + { + throw new SignatureException(e.getMessage()); + } + } + + protected boolean engineVerify( + byte[] sigBytes) + throws SignatureException + { + if (isRaw) + { + byte[] hash = bOut.toByteArray(); + contentDigest = mgfDigest = guessDigest(hash.length); + saltLength = contentDigest.getDigestSize(); + pss = new org.spongycastle.crypto.signers.PSSSigner(signer, new NullPssDigest(contentDigest), mgfDigest, saltLength); + + pss.init(false, sigParams); + + pss.update(hash, 0, hash.length); + } + return pss.verifySignature(sigBytes); + } + + protected void engineSetParameter( + AlgorithmParameterSpec params) + throws InvalidParameterException + { + throw new InvalidParameterException("Only PSSParameterSpec supported"); + } + + protected AlgorithmParameters engineGetParameters() + { + return engineParams; + } + + /** + * @deprecated replaced with <a href = "#engineSetParameter(java.security.spec.AlgorithmParameterSpec)"> + */ + protected void engineSetParameter( + String param, + Object value) + { + throw new UnsupportedOperationException("engineSetParameter unsupported"); + } + + protected Object engineGetParameter( + String param) + { + throw new UnsupportedOperationException("engineGetParameter unsupported"); + } + + private Digest guessDigest(int size) + { + switch (size) + { + case 20: + return new SHA1Digest(); + case 28: + return new SHA224Digest(); + case 32: + return new SHA256Digest(); + case 48: + return new SHA384Digest(); + case 64: + return new SHA512Digest(); + } + + return null; + } + + static public class nonePSS + extends PSSSignatureSpi + { + public nonePSS() + { + super("NONEwithRSAandMGF1", new RSABlindedEngine(), null, true); + } + } + + static public class PSSwithRSA + extends PSSSignatureSpi + { + public PSSwithRSA() + { + super("SHA1withRSAandMGF1", new RSABlindedEngine(), null); + } + } + + static public class SHA1withRSA + extends PSSSignatureSpi + { + public SHA1withRSA() + { + super("SHA1withRSAandMGF1", new RSABlindedEngine(), new SHA1Digest()); + } + } + + static public class SHA224withRSA + extends PSSSignatureSpi + { + public SHA224withRSA() + { + super("SHA224withRSAandMGF1", new RSABlindedEngine(), new SHA224Digest()); + } + } + + static public class SHA256withRSA + extends PSSSignatureSpi + { + public SHA256withRSA() + { + super("SHA256withRSAandMGF1", new RSABlindedEngine(), new SHA256Digest()); + } + } + + static public class SHA384withRSA + extends PSSSignatureSpi + { + public SHA384withRSA() + { + super("SHA384withRSAandMGF1", new RSABlindedEngine(), new SHA384Digest()); + } + } + + static public class SHA512withRSA + extends PSSSignatureSpi + { + public SHA512withRSA() + { + super("SHA512withRSAandMGF1", new RSABlindedEngine(), new SHA512Digest()); + } + } + + private class NullPssDigest + implements Digest + { + private ByteArrayOutputStream bOut = new ByteArrayOutputStream(); + private Digest baseDigest; + private boolean oddTime = true; + + public NullPssDigest(Digest mgfDigest) + { + this.baseDigest = mgfDigest; + } + + public String getAlgorithmName() + { + return "NULL"; + } + + public int getDigestSize() + { + return baseDigest.getDigestSize(); + } + + public void update(byte in) + { + bOut.write(in); + } + + public void update(byte[] in, int inOff, int len) + { + bOut.write(in, inOff, len); + } + + public int doFinal(byte[] out, int outOff) + { + byte[] res = bOut.toByteArray(); + + if (oddTime) + { + System.arraycopy(res, 0, out, outOff, res.length); + } + else + { + baseDigest.update(res, 0, res.length); + + baseDigest.doFinal(out, outOff); + } + + reset(); + + oddTime = !oddTime; + + return res.length; + } + + public void reset() + { + bOut.reset(); + baseDigest.reset(); + } + + public int getByteLength() + { + return 0; + } + } +} |