Examples with KeccakDigest org.spongycastle.crypto.digests.KeccakDigest used on opensource projects

Example 1 with KeccakDigest

use of org.spongycastle.crypto.digests.KeccakDigest in project aion by aionnetwork.

the class HashUtil method keccak256.

/**
 * Computes the keccak-256 hash of the given input.
 *
 * @param input Data for hashing
 * @return Hash
 */
public static byte[] keccak256(byte[] input) {
    KeccakDigest digest = new KeccakDigest(256);
    digest.update(input, 0, input.length);
    byte[] hash = new byte[32];
    digest.doFinal(hash, 0);
    return hash;
}

Example 2 with KeccakDigest

use of org.spongycastle.crypto.digests.KeccakDigest in project aion by aionnetwork.

the class ECKeySecp256k1 method computeAddress.

/**
 * Compute an address from an encoded public key.
 *
 * NOTE: This address computation is Ethereum-specific.
 *
 * @param pubBytes
 *            an encoded (uncompressed) public key
 * @return 20-byte address
 */
public byte[] computeAddress(byte[] pubBytes) {
    byte[] input = Arrays.copyOfRange(pubBytes, 1, pubBytes.length);
    KeccakDigest digest = new KeccakDigest(256);
    digest.update(input, 0, input.length);
    byte[] keccak256 = new byte[32];
    digest.doFinal(keccak256, 0);
    return copyOfRange(keccak256, 12, keccak256.length);
}