Examples of java.security.spec.RSAPublicKeySpec

java.security.spec.RSAPublicKeySpec
This class specifies an RSA public key. @author Jan Luehe @version 1.11 05/11/17 @see java.security.Key @see java.security.KeyFactory @see KeySpec @see X509EncodedKeySpec @see RSAPrivateKeySpec @see RSAPrivateCrtKeySpec

    if(GeneralizedKRSSMessageHelper.getKeyBindingAbstractType(req).getKeyInfo() != null && GeneralizedKRSSMessageHelper.getKeyBindingAbstractType(req).getKeyInfo().getContent().get(0) != null){
      try{
        JAXBElement element = (JAXBElement) GeneralizedKRSSMessageHelper.getKeyBindingAbstractType(req).getKeyInfo().getContent().get(0);
        if(element.getValue() instanceof RSAKeyValueType && registerRequest){
          RSAKeyValueType rSAKeyValueType  = (RSAKeyValueType) ((JAXBElement) GeneralizedKRSSMessageHelper.getKeyBindingAbstractType(req).getKeyInfo().getContent().get(0)).getValue();        
          RSAPublicKeySpec rSAPublicKeySpec = new RSAPublicKeySpec(new BigInteger(rSAKeyValueType.getModulus()), new BigInteger(rSAKeyValueType.getExponent()));        
          retval= KeyFactory.getInstance("RSA").generatePublic(rSAPublicKeySpec);
        }
        if(element.getValue() instanceof X509DataType){
          Iterator iter = ((X509DataType) element.getValue()).getX509IssuerSerialOrX509SKIOrX509SubjectName().iterator();
          while(iter.hasNext()){

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                    if (pos != rawKey.length) {
                        throw new IOException("Authorized keys file line " + reader.getLineNumber() + " contains a RSA key with extra garbage.");
                    }


                    RSAPublicKeySpec ps = new RSAPublicKeySpec(modulus, e);
                    pk = rsaKeyGen.generatePublic(ps);
                } else {
                    throw new IOException("Authorized keys file line " + reader.getLineNumber() + " does not start with ssh-dss or ssh-rsa.");
                }

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      throw new RuntimeException("Unsupported format");
      
    byte[] publicExponent = readElement(dis);
    byte[] modulus = readElement(dis);
    
    KeySpec spec = new RSAPublicKeySpec(new BigInteger(modulus), new BigInteger(publicExponent));
    KeyFactory keyFactory = KeyFactory.getInstance("RSA", BouncyCastleProvider.PROVIDER_NAME);
    RSAPublicKey pubKey = (RSAPublicKey) keyFactory.generatePublic(spec);
  
    return pubKey;
  }

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       }
       else if (spec.isAssignableFrom(RSAPublicKeySpec.class) && key instanceof RSAPublicKey)
       {
            RSAPublicKey    k = (RSAPublicKey)key;


            return new RSAPublicKeySpec(k.getModulus(), k.getPublicExponent());
       }
       else if (spec.isAssignableFrom(RSAPrivateKeySpec.class) && key instanceof RSAPrivateKey)
       {
            RSAPrivateKey    k = (RSAPrivateKey)key;

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        Security.addProvider(new BouncyCastleProvider());


        //
        // personal keys
        //
        RSAPublicKeySpec pubKeySpec = new RSAPublicKeySpec(
            new BigInteger("b4a7e46170574f16a97082b22be58b6a2a629798419be12872a4bdba626cfae9900f76abfb12139dce5de56564fab2b6543165a040c606887420e33d91ed7ed7", 16),
            new BigInteger("11", 16));


        RSAPrivateCrtKeySpec privKeySpec = new RSAPrivateCrtKeySpec(
            new BigInteger("b4a7e46170574f16a97082b22be58b6a2a629798419be12872a4bdba626cfae9900f76abfb12139dce5de56564fab2b6543165a040c606887420e33d91ed7ed7", 16),
            new BigInteger("11", 16),
            new BigInteger("9f66f6b05410cd503b2709e88115d55daced94d1a34d4e32bf824d0dde6028ae79c5f07b580f5dce240d7111f7ddb130a7945cd7d957d1920994da389f490c89", 16),
            new BigInteger("c0a0758cdf14256f78d4708c86becdead1b50ad4ad6c5c703e2168fbf37884cb", 16),
            new BigInteger("f01734d7960ea60070f1b06f2bb81bfac48ff192ae18451d5e56c734a5aab8a5", 16),
            new BigInteger("b54bb9edff22051d9ee60f9351a48591b6500a319429c069a3e335a1d6171391", 16),
            new BigInteger("d3d83daf2a0cecd3367ae6f8ae1aeb82e9ac2f816c6fc483533d8297dd7884cd", 16),
            new BigInteger("b8f52fc6f38593dabb661d3f50f8897f8106eee68b1bce78a95b132b4e5b5d19", 16));


        //
        // ca keys
        //
        RSAPublicKeySpec caPubKeySpec = new RSAPublicKeySpec(
            new BigInteger("b259d2d6e627a768c94be36164c2d9fc79d97aab9253140e5bf17751197731d6f7540d2509e7b9ffee0a70a6e26d56e92d2edd7f85aba85600b69089f35f6bdbf3c298e05842535d9f064e6b0391cb7d306e0a2d20c4dfb4e7b49a9640bdea26c10ad69c3f05007ce2513cee44cfe01998e62b6c3637d3fc0391079b26ee36d5", 16),
            new BigInteger("11", 16));


        RSAPrivateCrtKeySpec   caPrivKeySpec = new RSAPrivateCrtKeySpec(
            new BigInteger("b259d2d6e627a768c94be36164c2d9fc79d97aab9253140e5bf17751197731d6f7540d2509e7b9ffee0a70a6e26d56e92d2edd7f85aba85600b69089f35f6bdbf3c298e05842535d9f064e6b0391cb7d306e0a2d20c4dfb4e7b49a9640bdea26c10ad69c3f05007ce2513cee44cfe01998e62b6c3637d3fc0391079b26ee36d5", 16),

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        ByteArrayInputStream bAIS = new ByteArrayInputStream(readBytes(endMarker));
        ASN1InputStream ais = new ASN1InputStream(bAIS);
        Object asnObject = ais.readObject();
        ASN1Sequence sequence = (ASN1Sequence) asnObject;
        RSAPublicKeyStructure rsaPubStructure = new RSAPublicKeyStructure(sequence);
        RSAPublicKeySpec keySpec = new RSAPublicKeySpec(
                    rsaPubStructure.getModulus(), 
                    rsaPubStructure.getPublicExponent());


        try 
        {

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            DERInteger              p2 = (DERInteger)seq.getObjectAt(5);
            DERInteger              exp1 = (DERInteger)seq.getObjectAt(6);
            DERInteger              exp2 = (DERInteger)seq.getObjectAt(7);
            DERInteger              crtCoef = (DERInteger)seq.getObjectAt(8);


            pubSpec = new RSAPublicKeySpec(
                        mod.getValue(), pubExp.getValue());
            privSpec = new RSAPrivateCrtKeySpec(
                    mod.getValue(), pubExp.getValue(), privExp.getValue(),
                    p1.getValue(), p2.getValue(),
                    exp1.getValue(), exp2.getValue(),

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        Security.addProvider(new BouncyCastleProvider());


        //
        // personal keys
        //
        RSAPublicKeySpec pubKeySpec = new RSAPublicKeySpec(
            new BigInteger("b4a7e46170574f16a97082b22be58b6a2a629798419be12872a4bdba626cfae9900f76abfb12139dce5de56564fab2b6543165a040c606887420e33d91ed7ed7", 16),
            new BigInteger("11", 16));


        RSAPrivateCrtKeySpec privKeySpec = new RSAPrivateCrtKeySpec(
            new BigInteger("b4a7e46170574f16a97082b22be58b6a2a629798419be12872a4bdba626cfae9900f76abfb12139dce5de56564fab2b6543165a040c606887420e33d91ed7ed7", 16),
            new BigInteger("11", 16),
            new BigInteger("9f66f6b05410cd503b2709e88115d55daced94d1a34d4e32bf824d0dde6028ae79c5f07b580f5dce240d7111f7ddb130a7945cd7d957d1920994da389f490c89", 16),
            new BigInteger("c0a0758cdf14256f78d4708c86becdead1b50ad4ad6c5c703e2168fbf37884cb", 16),
            new BigInteger("f01734d7960ea60070f1b06f2bb81bfac48ff192ae18451d5e56c734a5aab8a5", 16),
            new BigInteger("b54bb9edff22051d9ee60f9351a48591b6500a319429c069a3e335a1d6171391", 16),
            new BigInteger("d3d83daf2a0cecd3367ae6f8ae1aeb82e9ac2f816c6fc483533d8297dd7884cd", 16),
            new BigInteger("b8f52fc6f38593dabb661d3f50f8897f8106eee68b1bce78a95b132b4e5b5d19", 16));


        //
        // intermediate keys.
        //
        RSAPublicKeySpec intPubKeySpec = new RSAPublicKeySpec(
            new BigInteger("8de0d113c5e736969c8d2b047a243f8fe18edad64cde9e842d3669230ca486f7cfdde1f8eec54d1905fff04acc85e61093e180cadc6cea407f193d44bb0e9449b8dbb49784cd9e36260c39e06a947299978c6ed8300724e887198cfede20f3fbde658fa2bd078be946a392bd349f2b49c486e20c405588e306706c9017308e69", 16),
            new BigInteger("ffff", 16));




        RSAPrivateCrtKeySpec intPrivKeySpec = new RSAPrivateCrtKeySpec(
            new BigInteger("8de0d113c5e736969c8d2b047a243f8fe18edad64cde9e842d3669230ca486f7cfdde1f8eec54d1905fff04acc85e61093e180cadc6cea407f193d44bb0e9449b8dbb49784cd9e36260c39e06a947299978c6ed8300724e887198cfede20f3fbde658fa2bd078be946a392bd349f2b49c486e20c405588e306706c9017308e69", 16),
            new BigInteger("ffff", 16),
            new BigInteger("7deb1b194a85bcfd29cf871411468adbc987650903e3bacc8338c449ca7b32efd39ffc33bc84412fcd7df18d23ce9d7c25ea910b1ae9985373e0273b4dca7f2e0db3b7314056ac67fd277f8f89cf2fd73c34c6ca69f9ba477143d2b0e2445548aa0b4a8473095182631da46844c356f5e5c7522eb54b5a33f11d730ead9c0cff", 16),
            new BigInteger("ef4cede573cea47f83699b814de4302edb60eefe426c52e17bd7870ec7c6b7a24fe55282ebb73775f369157726fcfb988def2b40350bdca9e5b418340288f649", 16),
            new BigInteger("97c7737d1b9a0088c3c7b528539247fd2a1593e7e01cef18848755be82f4a45aa093276cb0cbf118cb41117540a78f3fc471ba5d69f0042274defc9161265721", 16),
            new BigInteger("6c641094e24d172728b8da3c2777e69adfd0839085be7e38c7c4a2dd00b1ae969f2ec9d23e7e37090fcd449a40af0ed463fe1c612d6810d6b4f58b7bfa31eb5f", 16),
            new BigInteger("70b7123e8e69dfa76feb1236d0a686144b00e9232ed52b73847e74ef3af71fb45ccb24261f40d27f98101e230cf27b977a5d5f1f15f6cf48d5cb1da2a3a3b87f", 16),
            new BigInteger("e38f5750d97e270996a286df2e653fd26c242106436f5bab0f4c7a9e654ce02665d5a281f2c412456f2d1fa26586ef04a9adac9004ca7f913162cb28e13bf40d", 16));


        //
        // ca keys
        //
        RSAPublicKeySpec caPubKeySpec = new RSAPublicKeySpec(
            new BigInteger("b259d2d6e627a768c94be36164c2d9fc79d97aab9253140e5bf17751197731d6f7540d2509e7b9ffee0a70a6e26d56e92d2edd7f85aba85600b69089f35f6bdbf3c298e05842535d9f064e6b0391cb7d306e0a2d20c4dfb4e7b49a9640bdea26c10ad69c3f05007ce2513cee44cfe01998e62b6c3637d3fc0391079b26ee36d5", 16),
            new BigInteger("11", 16));


        RSAPrivateCrtKeySpec   caPrivKeySpec = new RSAPrivateCrtKeySpec(
            new BigInteger("b259d2d6e627a768c94be36164c2d9fc79d97aab9253140e5bf17751197731d6f7540d2509e7b9ffee0a70a6e26d56e92d2edd7f85aba85600b69089f35f6bdbf3c298e05842535d9f064e6b0391cb7d306e0a2d20c4dfb4e7b49a9640bdea26c10ad69c3f05007ce2513cee44cfe01998e62b6c3637d3fc0391079b26ee36d5", 16),

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   * @throws NoSuchAlgorithmException
   * @throws InvalidKeySpecException
   */
  public X509CredentialImpl(BigInteger modulus, BigInteger publicExponent)
      throws NoSuchAlgorithmException, InvalidKeySpecException {
    RSAPublicKeySpec spec = new RSAPublicKeySpec(modulus, publicExponent);
    KeyFactory keyFactory = KeyFactory.getInstance("RSA");
    publicKey = keyFactory.generatePublic(spec);
  }

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            } else {
                return null;
            }
        }
        
        RSAPublicKeySpec rsaPublicKeySpec = new RSAPublicKeySpec(
                new BigInteger(rsaKeyPair.getModulus()), new BigInteger(
                        rsaKeyPair.getExponent()));
        
        RSAPrivateCrtKeySpec rsaPrivateCrtKeySpec = new RSAPrivateCrtKeySpec(
                new BigInteger(rsaKeyPair.getModulus()),

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