diff options
Diffstat (limited to 'libraries/spongycastle/prov/src/main/java/org/spongycastle/pqc/jcajce/provider/mceliece/McElieceKeyFactorySpi.java')
| -rw-r--r-- | libraries/spongycastle/prov/src/main/java/org/spongycastle/pqc/jcajce/provider/mceliece/McElieceKeyFactorySpi.java | 343 |
1 files changed, 0 insertions, 343 deletions
diff --git a/libraries/spongycastle/prov/src/main/java/org/spongycastle/pqc/jcajce/provider/mceliece/McElieceKeyFactorySpi.java b/libraries/spongycastle/prov/src/main/java/org/spongycastle/pqc/jcajce/provider/mceliece/McElieceKeyFactorySpi.java deleted file mode 100644 index 1c2007a09..000000000 --- a/libraries/spongycastle/prov/src/main/java/org/spongycastle/pqc/jcajce/provider/mceliece/McElieceKeyFactorySpi.java +++ /dev/null @@ -1,343 +0,0 @@ -package org.spongycastle.pqc.jcajce.provider.mceliece; - -import java.io.IOException; -import java.math.BigInteger; -import java.security.InvalidKeyException; -import java.security.Key; -import java.security.KeyFactorySpi; -import java.security.PrivateKey; -import java.security.PublicKey; -import java.security.spec.InvalidKeySpecException; -import java.security.spec.KeySpec; -import java.security.spec.PKCS8EncodedKeySpec; -import java.security.spec.X509EncodedKeySpec; - -import org.spongycastle.asn1.ASN1Integer; -import org.spongycastle.asn1.ASN1ObjectIdentifier; -import org.spongycastle.asn1.ASN1OctetString; -import org.spongycastle.asn1.ASN1Primitive; -import org.spongycastle.asn1.ASN1Sequence; -import org.spongycastle.asn1.pkcs.PrivateKeyInfo; -import org.spongycastle.asn1.x509.SubjectPublicKeyInfo; -import org.spongycastle.pqc.asn1.McEliecePrivateKey; -import org.spongycastle.pqc.asn1.McEliecePublicKey; -import org.spongycastle.pqc.jcajce.spec.McEliecePrivateKeySpec; -import org.spongycastle.pqc.jcajce.spec.McEliecePublicKeySpec; - -/** - * This class is used to translate between McEliece keys and key specifications. - * - * @see BCMcEliecePrivateKey - * @see McEliecePrivateKeySpec - * @see BCMcEliecePublicKey - * @see McEliecePublicKeySpec - */ -public class McElieceKeyFactorySpi - extends KeyFactorySpi -{ - /** - * The OID of the algorithm. - */ - public static final String OID = "1.3.6.1.4.1.8301.3.1.3.4.1"; - - /** - * Converts, if possible, a key specification into a - * {@link BCMcEliecePublicKey}. Currently, the following key specifications - * are supported: {@link McEliecePublicKeySpec}, {@link X509EncodedKeySpec}. - * - * @param keySpec the key specification - * @return the McEliece public key - * @throws InvalidKeySpecException if the key specification is not supported. - */ - public PublicKey generatePublic(KeySpec keySpec) - throws InvalidKeySpecException - { - if (keySpec instanceof McEliecePublicKeySpec) - { - return new BCMcEliecePublicKey((McEliecePublicKeySpec)keySpec); - } - else if (keySpec instanceof X509EncodedKeySpec) - { - // get the DER-encoded Key according to X.509 from the spec - byte[] encKey = ((X509EncodedKeySpec)keySpec).getEncoded(); - - // decode the SubjectPublicKeyInfo data structure to the pki object - SubjectPublicKeyInfo pki; - try - { - pki = SubjectPublicKeyInfo.getInstance(ASN1Primitive.fromByteArray(encKey)); - } - catch (IOException e) - { - throw new InvalidKeySpecException(e.toString()); - } - - try - { - // --- Build and return the actual key. - ASN1Primitive innerType = pki.parsePublicKey(); - ASN1Sequence publicKey = (ASN1Sequence)innerType; - - // decode oidString (but we don't need it right now) - String oidString = ((ASN1ObjectIdentifier)publicKey.getObjectAt(0)) - .toString(); - - // decode <n> - BigInteger bigN = ((ASN1Integer)publicKey.getObjectAt(1)).getValue(); - int n = bigN.intValue(); - - // decode <t> - BigInteger bigT = ((ASN1Integer)publicKey.getObjectAt(2)).getValue(); - int t = bigT.intValue(); - - // decode <matrixG> - byte[] matrixG = ((ASN1OctetString)publicKey.getObjectAt(3)).getOctets(); - - - return new BCMcEliecePublicKey(new McEliecePublicKeySpec(OID, t, n, - matrixG)); - } - catch (IOException cce) - { - throw new InvalidKeySpecException( - "Unable to decode X509EncodedKeySpec: " - + cce.getMessage()); - } - } - - throw new InvalidKeySpecException("Unsupported key specification: " - + keySpec.getClass() + "."); - } - - /** - * Converts, if possible, a key specification into a - * {@link BCMcEliecePrivateKey}. Currently, the following key specifications - * are supported: {@link McEliecePrivateKeySpec}, - * {@link PKCS8EncodedKeySpec}. - * - * @param keySpec the key specification - * @return the McEliece private key - * @throws InvalidKeySpecException if the KeySpec is not supported. - */ - public PrivateKey generatePrivate(KeySpec keySpec) - throws InvalidKeySpecException - { - if (keySpec instanceof McEliecePrivateKeySpec) - { - return new BCMcEliecePrivateKey((McEliecePrivateKeySpec)keySpec); - } - else if (keySpec instanceof PKCS8EncodedKeySpec) - { - // get the DER-encoded Key according to PKCS#8 from the spec - byte[] encKey = ((PKCS8EncodedKeySpec)keySpec).getEncoded(); - - // decode the PKCS#8 data structure to the pki object - PrivateKeyInfo pki; - - try - { - pki = PrivateKeyInfo.getInstance(ASN1Primitive.fromByteArray(encKey)); - } - catch (IOException e) - { - throw new InvalidKeySpecException("Unable to decode PKCS8EncodedKeySpec: " + e); - } - - try - { - ASN1Primitive innerType = pki.parsePrivateKey().toASN1Primitive(); - - // build and return the actual key - ASN1Sequence privKey = (ASN1Sequence)innerType; - - // decode oidString (but we don't need it right now) - String oidString = ((ASN1ObjectIdentifier)privKey.getObjectAt(0)) - .toString(); - - // decode <n> - BigInteger bigN = ((ASN1Integer)privKey.getObjectAt(1)).getValue(); - int n = bigN.intValue(); - - // decode <k> - BigInteger bigK = ((ASN1Integer)privKey.getObjectAt(2)).getValue(); - int k = bigK.intValue(); - - // decode <fieldPoly> - byte[] encFieldPoly = ((ASN1OctetString)privKey.getObjectAt(3)) - .getOctets(); - // decode <goppaPoly> - byte[] encGoppaPoly = ((ASN1OctetString)privKey.getObjectAt(4)) - .getOctets(); - - // decode <sInv> - byte[] encSInv = ((ASN1OctetString)privKey.getObjectAt(5)).getOctets(); - // decode <p1> - byte[] encP1 = ((ASN1OctetString)privKey.getObjectAt(6)).getOctets(); - // decode <p2> - byte[] encP2 = ((ASN1OctetString)privKey.getObjectAt(7)).getOctets(); - - //decode <h> - byte[] encH = ((ASN1OctetString)privKey.getObjectAt(8)).getOctets(); - - // decode <qInv> - ASN1Sequence qSeq = (ASN1Sequence)privKey.getObjectAt(9); - byte[][] encQInv = new byte[qSeq.size()][]; - for (int i = 0; i < qSeq.size(); i++) - { - encQInv[i] = ((ASN1OctetString)qSeq.getObjectAt(i)).getOctets(); - } - - return new BCMcEliecePrivateKey(new McEliecePrivateKeySpec(OID, n, k, - encFieldPoly, encGoppaPoly, encSInv, encP1, encP2, - encH, encQInv)); - - } - catch (IOException cce) - { - throw new InvalidKeySpecException( - "Unable to decode PKCS8EncodedKeySpec."); - } - } - - throw new InvalidKeySpecException("Unsupported key specification: " - + keySpec.getClass() + "."); - } - - /** - * Converts, if possible, a given key into a key specification. Currently, - * the following key specifications are supported: - * <ul> - * <li>for McEliecePublicKey: {@link X509EncodedKeySpec}, - * {@link McEliecePublicKeySpec}</li> - * <li>for McEliecePrivateKey: {@link PKCS8EncodedKeySpec}, - * {@link McEliecePrivateKeySpec}</li>. - * </ul> - * - * @param key the key - * @param keySpec the key specification - * @return the specification of the McEliece key - * @throws InvalidKeySpecException if the key type or the key specification is not - * supported. - * @see BCMcEliecePrivateKey - * @see McEliecePrivateKeySpec - * @see BCMcEliecePublicKey - * @see McEliecePublicKeySpec - */ - public KeySpec getKeySpec(Key key, Class keySpec) - throws InvalidKeySpecException - { - if (key instanceof BCMcEliecePrivateKey) - { - if (PKCS8EncodedKeySpec.class.isAssignableFrom(keySpec)) - { - return new PKCS8EncodedKeySpec(key.getEncoded()); - } - else if (McEliecePrivateKeySpec.class.isAssignableFrom(keySpec)) - { - BCMcEliecePrivateKey privKey = (BCMcEliecePrivateKey)key; - return new McEliecePrivateKeySpec(OID, privKey.getN(), privKey - .getK(), privKey.getField(), privKey.getGoppaPoly(), - privKey.getSInv(), privKey.getP1(), privKey.getP2(), - privKey.getH(), privKey.getQInv()); - } - } - else if (key instanceof BCMcEliecePublicKey) - { - if (X509EncodedKeySpec.class.isAssignableFrom(keySpec)) - { - return new X509EncodedKeySpec(key.getEncoded()); - } - else if (McEliecePublicKeySpec.class.isAssignableFrom(keySpec)) - { - BCMcEliecePublicKey pubKey = (BCMcEliecePublicKey)key; - return new McEliecePublicKeySpec(OID, pubKey.getN(), pubKey.getT(), - pubKey.getG()); - } - } - else - { - throw new InvalidKeySpecException("Unsupported key type: " - + key.getClass() + "."); - } - - throw new InvalidKeySpecException("Unknown key specification: " - + keySpec + "."); - } - - /** - * Translates a key into a form known by the FlexiProvider. Currently, only - * the following "source" keys are supported: {@link BCMcEliecePrivateKey}, - * {@link BCMcEliecePublicKey}. - * - * @param key the key - * @return a key of a known key type - * @throws InvalidKeyException if the key type is not supported. - */ - public Key translateKey(Key key) - throws InvalidKeyException - { - if ((key instanceof BCMcEliecePrivateKey) - || (key instanceof BCMcEliecePublicKey)) - { - return key; - } - throw new InvalidKeyException("Unsupported key type."); - - } - - public PublicKey generatePublic(SubjectPublicKeyInfo pki) - throws InvalidKeySpecException - { - // get the inner type inside the BIT STRING - try - { - ASN1Primitive innerType = pki.parsePublicKey(); - McEliecePublicKey key = McEliecePublicKey.getInstance(innerType); - return new BCMcEliecePublicKey(key.getOID().getId(), key.getN(), key.getT(), key.getG()); - } - catch (IOException cce) - { - throw new InvalidKeySpecException("Unable to decode X509EncodedKeySpec"); - } - } - - public PrivateKey generatePrivate(PrivateKeyInfo pki) - throws InvalidKeySpecException - { - // get the inner type inside the BIT STRING - try - { - ASN1Primitive innerType = pki.parsePrivateKey().toASN1Primitive(); - McEliecePrivateKey key = McEliecePrivateKey.getInstance(innerType); - return new BCMcEliecePrivateKey(key.getOID().getId(), key.getN(), key.getK(), key.getField(), key.getGoppaPoly(), key.getSInv(), key.getP1(), key.getP2(), key.getH(), key.getQInv()); - } - catch (IOException cce) - { - throw new InvalidKeySpecException("Unable to decode PKCS8EncodedKeySpec"); - } - } - - protected PublicKey engineGeneratePublic(KeySpec keySpec) - throws InvalidKeySpecException - { - return null; //To change body of implemented methods use File | Settings | File Templates. - } - - protected PrivateKey engineGeneratePrivate(KeySpec keySpec) - throws InvalidKeySpecException - { - return null; //To change body of implemented methods use File | Settings | File Templates. - } - - protected KeySpec engineGetKeySpec(Key key, Class tClass) - throws InvalidKeySpecException - { - return null; //To change body of implemented methods use File | Settings | File Templates. - } - - protected Key engineTranslateKey(Key key) - throws InvalidKeyException - { - return null; //To change body of implemented methods use File | Settings | File Templates. - } -} |