Examples of org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.generateDerivedParameters()

org.bouncycastle.crypto.generators.PKCS5S2ParametersGenerator.generateDerivedParameters()
Generate a key parameter derived from the password, salt, and iteration count we are currently initialised with. @param keySize the size of the key we want (in bits) @return a KeyParameter object.

            if (scheme.getObjectId().equals(RC2_CBC))
            {
                RC2CBCParameter rc2Params = new RC2CBCParameter((ASN1Sequence)scheme.getObject());
                byte[]  iv = rc2Params.getIV();
    
                param = new ParametersWithIV(generator.generateDerivedParameters(keySize), iv);
            }
            else
            {
                byte[]  iv = ((ASN1OctetString)scheme.getObject()).getOctets();

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            }
            else
            {
                byte[]  iv = ((ASN1OctetString)scheme.getObject()).getOctets();


                param = new ParametersWithIV(generator.generateDerivedParameters(keySize), iv);
            }
    
            cipher.init(false, param);
    
            byte[]  data = info.getEncryptedData();

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        }
        int iterationCount = pbkdfParams.getIterationCount().intValue();
        byte[] salt = pbkdfParams.getSalt();
        PBEParametersGenerator generator = new PKCS5S2ParametersGenerator();
        generator.init(PBEParametersGenerator.PKCS5PasswordToBytes(password), salt, iterationCount);
        return generator.generateDerivedParameters(keySize);
    }


    // PEM_read_bio_PUBKEY
    public static PublicKey readPubKey(Reader in) throws IOException {
        PublicKey pubKey = readRSAPubKey(in);

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    super.saltBytes = salt;


    PBEParametersGenerator generator = new PKCS5S2ParametersGenerator();
    generator.init( pwBytes, salt, ITERATION_COUNT );


    cipherParameters = generator.generateDerivedParameters(KEY_SIZE_BIT*2 + 16);
    byte[] keyBytes = ((KeyParameter)cipherParameters).getKey();


    this.cryptoKeyBytes = new byte[ KEY_SIZE_BYTE ];
    System.arraycopy( keyBytes, 0, cryptoKeyBytes, 0, KEY_SIZE_BYTE );

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      throw new ZipException("wrong password - " + ByteArrayHelper.toString(this.pwVerificationBytes) + "/ " + ByteArrayHelper.toString(pwVerification));
    }


    // create the first 16 bytes of the key sequence again (using pw+salt)
    generator.init( pwBytes, salt, ITERATION_COUNT );
    cipherParameters = generator.generateDerivedParameters(KEY_SIZE_BIT);


    // checksum added to the end of the encrypted data, update on each encryption call
    this.mac = new HMac( new SHA1Digest() );
    mac.init( new KeyParameter(authenticationCodeBytes) );

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    this.saltBytes = createSalt();
    generator.init( pwBytes, saltBytes, ITERATION_COUNT );


    // create 2 byte[16] for two keys and one byte[2] for pwVerification
    // 1. encryption / 2. athentication (via HMAC/hash) /
    cipherParameters = generator.generateDerivedParameters(KEY_SIZE_BIT*2 + 16);
    byte[] keyBytes = ((KeyParameter)cipherParameters).getKey();


    this.cryptoKeyBytes = new byte[ KEY_SIZE_BYTE ];
    System.arraycopy( keyBytes, 0, cryptoKeyBytes, 0, KEY_SIZE_BYTE );

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    this.pwVerificationBytes = new byte[ 2 ];
    System.arraycopy( keyBytes, KEY_SIZE_BYTE*2, pwVerificationBytes, 0, 2 );


    // create the first 16 bytes of the key sequence again (using pw+salt)
    generator.init( pwBytes, saltBytes, ITERATION_COUNT );
    cipherParameters = generator.generateDerivedParameters(KEY_SIZE_BIT);


    // checksum added to the end of the encrypted data, update on each encryption call
    this.mac = new HMac( new SHA1Digest() );
    mac.init( new KeyParameter(authenticationCodeBytes) );

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    {
        PKCS5S2ParametersGenerator gen = new PKCS5S2ParametersGenerator();


        gen.init(PBEParametersGenerator.PKCS5PasswordToBytes(this.getPassword()), this.getSalt(), this.getIterationCount());


        return ((KeyParameter)gen.generateDerivedParameters(CMSEnvelopedHelper.INSTANCE.getKeySize(algorithmOid))).getKey();
    }
}

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        // Android 4.4 however uses all char bytes
        // useUtf8 needs to be true for KitKat
        byte[] pwBytes = useUtf8 ? PBEParametersGenerator.PKCS5PasswordToUTF8Bytes(pwArray)
                : PBEParametersGenerator.PKCS5PasswordToBytes(pwArray);
        generator.init(pwBytes, salt, rounds);
        KeyParameter params = (KeyParameter) generator
                .generateDerivedParameters(PBKDF2_KEY_SIZE);


        return new SecretKeySpec(params.getKey(), "AES");
    }

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