diff options
Diffstat (limited to 'libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/dsa/DSASigner.java')
| -rw-r--r-- | libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/dsa/DSASigner.java | 313 |
1 files changed, 0 insertions, 313 deletions
diff --git a/libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/dsa/DSASigner.java b/libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/dsa/DSASigner.java deleted file mode 100644 index c2b9e5d32..000000000 --- a/libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/dsa/DSASigner.java +++ /dev/null @@ -1,313 +0,0 @@ -package org.spongycastle.jcajce.provider.asymmetric.dsa; - -import java.io.IOException; -import java.math.BigInteger; -import java.security.InvalidKeyException; -import java.security.PrivateKey; -import java.security.PublicKey; -import java.security.SecureRandom; -import java.security.SignatureException; -import java.security.SignatureSpi; -import java.security.interfaces.DSAKey; -import java.security.spec.AlgorithmParameterSpec; - -import org.spongycastle.asn1.ASN1Encoding; -import org.spongycastle.asn1.ASN1Integer; -import org.spongycastle.asn1.ASN1Primitive; -import org.spongycastle.asn1.ASN1Sequence; -import org.spongycastle.asn1.DERSequence; -import org.spongycastle.asn1.pkcs.PKCSObjectIdentifiers; -import org.spongycastle.asn1.x509.SubjectPublicKeyInfo; -import org.spongycastle.asn1.x509.X509ObjectIdentifiers; -import org.spongycastle.crypto.CipherParameters; -import org.spongycastle.crypto.DSA; -import org.spongycastle.crypto.Digest; -import org.spongycastle.crypto.digests.NullDigest; -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.params.ParametersWithRandom; -import org.spongycastle.crypto.signers.HMacDSAKCalculator; - -public class DSASigner - extends SignatureSpi - implements PKCSObjectIdentifiers, X509ObjectIdentifiers -{ - private Digest digest; - private DSA signer; - private SecureRandom random; - - protected DSASigner( - Digest digest, - DSA signer) - { - this.digest = digest; - this.signer = signer; - } - - protected void engineInitVerify( - PublicKey publicKey) - throws InvalidKeyException - { - CipherParameters param; - - if (publicKey instanceof DSAKey) - { - param = DSAUtil.generatePublicKeyParameter(publicKey); - } - else - { - try - { - byte[] bytes = publicKey.getEncoded(); - - publicKey = new BCDSAPublicKey(SubjectPublicKeyInfo.getInstance(bytes)); - - if (publicKey instanceof DSAKey) - { - param = DSAUtil.generatePublicKeyParameter(publicKey); - } - else - { - throw new InvalidKeyException("can't recognise key type in DSA based signer"); - } - } - catch (Exception e) - { - throw new InvalidKeyException("can't recognise key type in DSA based signer"); - } - } - - digest.reset(); - signer.init(false, param); - } - - protected void engineInitSign( - PrivateKey privateKey, - SecureRandom random) - throws InvalidKeyException - { - this.random = random; - engineInitSign(privateKey); - } - - protected void engineInitSign( - PrivateKey privateKey) - throws InvalidKeyException - { - CipherParameters param; - - param = DSAUtil.generatePrivateKeyParameter(privateKey); - - if (random != null) - { - param = new ParametersWithRandom(param, random); - } - - digest.reset(); - signer.init(true, param); - } - - protected void engineUpdate( - byte b) - throws SignatureException - { - digest.update(b); - } - - protected void engineUpdate( - byte[] b, - int off, - int len) - throws SignatureException - { - digest.update(b, off, len); - } - - protected byte[] engineSign() - throws SignatureException - { - byte[] hash = new byte[digest.getDigestSize()]; - - digest.doFinal(hash, 0); - - try - { - BigInteger[] sig = signer.generateSignature(hash); - - return derEncode(sig[0], sig[1]); - } - catch (Exception e) - { - throw new SignatureException(e.toString()); - } - } - - protected boolean engineVerify( - byte[] sigBytes) - throws SignatureException - { - byte[] hash = new byte[digest.getDigestSize()]; - - digest.doFinal(hash, 0); - - BigInteger[] sig; - - try - { - sig = derDecode(sigBytes); - } - catch (Exception e) - { - throw new SignatureException("error decoding signature bytes."); - } - - return signer.verifySignature(hash, sig[0], sig[1]); - } - - protected void engineSetParameter( - AlgorithmParameterSpec params) - { - throw new UnsupportedOperationException("engineSetParameter unsupported"); - } - - /** - * @deprecated replaced with <a href = "#engineSetParameter(java.security.spec.AlgorithmParameterSpec)"> - */ - protected void engineSetParameter( - String param, - Object value) - { - throw new UnsupportedOperationException("engineSetParameter unsupported"); - } - - /** - * @deprecated - */ - protected Object engineGetParameter( - String param) - { - throw new UnsupportedOperationException("engineSetParameter unsupported"); - } - - private byte[] derEncode( - BigInteger r, - BigInteger s) - throws IOException - { - ASN1Integer[] rs = new ASN1Integer[]{ new ASN1Integer(r), new ASN1Integer(s) }; - return new DERSequence(rs).getEncoded(ASN1Encoding.DER); - } - - private BigInteger[] derDecode( - byte[] encoding) - throws IOException - { - ASN1Sequence s = (ASN1Sequence)ASN1Primitive.fromByteArray(encoding); - return new BigInteger[]{ - ((ASN1Integer)s.getObjectAt(0)).getValue(), - ((ASN1Integer)s.getObjectAt(1)).getValue() - }; - } - - static public class stdDSA - extends DSASigner - { - public stdDSA() - { - super(new SHA1Digest(), new org.spongycastle.crypto.signers.DSASigner()); - } - } - - static public class detDSA - extends DSASigner - { - public detDSA() - { - super(new SHA1Digest(), new org.spongycastle.crypto.signers.DSASigner(new HMacDSAKCalculator(new SHA1Digest()))); - } - } - - static public class dsa224 - extends DSASigner - { - public dsa224() - { - super(new SHA224Digest(), new org.spongycastle.crypto.signers.DSASigner()); - } - } - - static public class detDSA224 - extends DSASigner - { - public detDSA224() - { - super(new SHA224Digest(), new org.spongycastle.crypto.signers.DSASigner(new HMacDSAKCalculator(new SHA224Digest()))); - } - } - - static public class dsa256 - extends DSASigner - { - public dsa256() - { - super(new SHA256Digest(), new org.spongycastle.crypto.signers.DSASigner()); - } - } - - static public class detDSA256 - extends DSASigner - { - public detDSA256() - { - super(new SHA256Digest(), new org.spongycastle.crypto.signers.DSASigner(new HMacDSAKCalculator(new SHA256Digest()))); - } - } - - static public class dsa384 - extends DSASigner - { - public dsa384() - { - super(new SHA384Digest(), new org.spongycastle.crypto.signers.DSASigner()); - } - } - - static public class detDSA384 - extends DSASigner - { - public detDSA384() - { - super(new SHA384Digest(), new org.spongycastle.crypto.signers.DSASigner(new HMacDSAKCalculator(new SHA384Digest()))); - } - } - - static public class dsa512 - extends DSASigner - { - public dsa512() - { - super(new SHA512Digest(), new org.spongycastle.crypto.signers.DSASigner()); - } - } - - static public class detDSA512 - extends DSASigner - { - public detDSA512() - { - super(new SHA512Digest(), new org.spongycastle.crypto.signers.DSASigner(new HMacDSAKCalculator(new SHA512Digest()))); - } - } - - static public class noneDSA - extends DSASigner - { - public noneDSA() - { - super(new NullDigest(), new org.spongycastle.crypto.signers.DSASigner()); - } - } -} |