Example usage for org.bouncycastle.crypto.generators PKCS5S1ParametersGenerator PKCS5S1ParametersGenerator

Introduction

In this page you can find the example usage for org.bouncycastle.crypto.generators PKCS5S1ParametersGenerator PKCS5S1ParametersGenerator.

Prototype

public PKCS5S1ParametersGenerator(Digest digest) 

Source Link

Document

Construct a PKCS 5 Scheme 1 Parameters generator.

Usage

From source file:com.giacomodrago.immediatecrypt.aes.AESFacadeImpl.java

License:Open Source License

protected ParametersWithIV createDecryptionParameters(String password, String salt, byte[] iv) {

    byte[] passwordBytes = password.getBytes(Charsets.UTF_8);
    byte[] saltBytes = salt.getBytes(Charsets.UTF_8);

    PKCS5S1ParametersGenerator keyGenerator = new PKCS5S1ParametersGenerator(new SHA512Digest());
    keyGenerator.init(passwordBytes, saltBytes, PBE_ITERATION_COUNT);

    KeyParameter params = (KeyParameter) keyGenerator.generateDerivedParameters(KEY_SIZE);

    return new ParametersWithIV(params, iv);

}

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From source file:com.giacomodrago.immediatecrypt.aes.AESFacadeImpl.java

License:Open Source License

protected ParametersWithIV createEncryptionParameters(String password, String salt) {

    byte[] passwordBytes = password.getBytes(Charsets.UTF_8);
    byte[] saltBytes = salt.getBytes(Charsets.UTF_8);

    PKCS5S1ParametersGenerator keyGenerator = new PKCS5S1ParametersGenerator(new SHA512Digest());
    keyGenerator.init(passwordBytes, saltBytes, PBE_ITERATION_COUNT);

    ParametersWithIV params = (ParametersWithIV) keyGenerator.generateDerivedParameters(KEY_SIZE, IV_SIZE);

    return params;

}

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From source file:edu.vt.middleware.crypt.pbe.PBKDF1KeyGenerator.java

License:Open Source License

/** {@inheritDoc} */
protected PBEParametersGenerator newParamGenerator() {
    return new PKCS5S1ParametersGenerator(digest.getDigest());
}

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From source file:edu.vt.middleware.crypt.PbeKeyGenerator.java

License:Open Source License

/**
 * Generate a key from a text password using the PKCS#5 version 1 method
 * described at http://www.rsa.com/rsalabs/node.asp?id=2127.
 *
 * @param  password  Raw material used for key generation.
 * @param  keyBitLength  Size of generated key in bits.
 * @param  digest  Digest algorithm to use during key generation.
 * @param  salt  Key initialization data.
 *
 * @return  Secret key based on password.
 *///from   ww  w  .  ja  v  a2  s  .  c o m
public SecretKey generatePkcs5v1(final char[] password, final int keyBitLength, final DigestAlgorithm digest,
        final byte[] salt) {
    final int minSize = keyBitLength / BITS_IN_BYTE;
    if (digest.getDigest().getDigestSize() < minSize) {
        throw new IllegalArgumentException("Digest is too small for chosen key size. "
                + "Use a digest whose size is at least " + minSize + " bytes.");
    }
    return generate(new PKCS5S1ParametersGenerator(digest.getDigest()),
            PBEParametersGenerator.PKCS5PasswordToBytes(password), keyBitLength, salt);
}

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From source file:edu.vt.middleware.crypt.PbeKeyGenerator.java

License:Open Source License

/**
 * Generate a key/IV pair from a text password using the PKCS#5 version 1
 * method described at http://www.rsa.com/rsalabs/node.asp?id=2127.
 *
 * @param  password  Raw material used for key generation.
 * @param  keyBitLength  Size of generated key in bits.
 * @param  ivBitLength  Size of generated IV in bits.
 * @param  digest  Digest algorithm to use during key generation.
 * @param  salt  Key initialization data.
 *
 * @return  Secret key based on password.
 *//*from www  .  j  a va 2  s . c  om*/
public KeyWithIV generatePkcs5v1(final char[] password, final int keyBitLength, final int ivBitLength,
        final DigestAlgorithm digest, final byte[] salt) {
    final int minSize = (keyBitLength + ivBitLength) / BITS_IN_BYTE;
    if (digest.getDigest().getDigestSize() < minSize) {
        throw new IllegalArgumentException("Digest is too small for chosen key + IV size. "
                + "Use a digest whose size is at least " + minSize + " bytes.");
    }
    return generate(new PKCS5S1ParametersGenerator(digest.getDigest()),
            PBEParametersGenerator.PKCS5PasswordToBytes(password), keyBitLength, ivBitLength, salt);
}

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From source file:org.cryptacular.pbe.PBES1EncryptionScheme.java

License:Open Source License

/**
 * Creates a new instance with the given parameters.
 *
 * @param  alg  Describes hash/algorithm pair suitable for PBES1 scheme.
 * @param  params  Key generation function salt and iteration count.
 * @param  password  Password used to derive key.
 *//*from ww w  .java 2  s  .c o m*/
public PBES1EncryptionScheme(final PBES1Algorithm alg, final PBEParameter params, final char[] password) {
    final byte[] salt = params.getSalt();
    final int iterations = params.getIterationCount().intValue();
    final PKCS5S1ParametersGenerator generator = new PKCS5S1ParametersGenerator(
            alg.getDigestSpec().newInstance());
    generator.init(PBEParametersGenerator.PKCS5PasswordToUTF8Bytes(password), salt, iterations);
    setCipher(alg.getCipherSpec().newInstance());
    setCipherParameters(generator.generateDerivedParameters(KEY_LENGTH, IV_LENGTH));
}

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