Example usage for org.bouncycastle.crypto BlockCipher getAlgorithmName

Introduction

In this page you can find the example usage for org.bouncycastle.crypto BlockCipher getAlgorithmName.

Prototype

public String getAlgorithmName();

Source Link

Document

Return the name of the algorithm the cipher implements.

Usage

From source file:freenet.crypt.OCBBlockCipher_v149.java

License:Open Source License

public OCBBlockCipher_v149(BlockCipher hashCipher, BlockCipher mainCipher) {
    if (hashCipher == null) {
        throw new IllegalArgumentException("'hashCipher' cannot be null");
    }//from   w  w w . j ava2  s.co m
    if (hashCipher.getBlockSize() != BLOCK_SIZE) {
        throw new IllegalArgumentException("'hashCipher' must have a block size of " + BLOCK_SIZE);
    }
    if (mainCipher == null) {
        throw new IllegalArgumentException("'mainCipher' cannot be null");
    }
    if (mainCipher.getBlockSize() != BLOCK_SIZE) {
        throw new IllegalArgumentException("'mainCipher' must have a block size of " + BLOCK_SIZE);
    }

    if (!hashCipher.getAlgorithmName().equals(mainCipher.getAlgorithmName())) {
        throw new IllegalArgumentException("'hashCipher' and 'mainCipher' must be the same algorithm");
    }

    this.hashCipher = hashCipher;
    this.mainCipher = mainCipher;
}

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From source file:org.cryptacular.generator.SecretKeyGenerator.java

License:Open Source License

/**
 * Generates a symmetric encryption key of the given length.
 *
 * @param  bitLength  Desired key length in bits.
 * @param  cipher  Cipher with with key will be used.
 * @param  random  Randomness provider for key generation.
 *
 * @return  Symmetric encryption key./* w w w.  j a v a 2  s  .  c  o  m*/
 */
public static SecretKey generate(final int bitLength, final BlockCipher cipher, final SecureRandom random) {
    // Round up for bit lengths that are not a multiple of 8
    final byte[] key = new byte[(bitLength + 7) / 8];
    random.nextBytes(key);
    return new SecretKeySpec(key, cipher.getAlgorithmName());
}

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