Merge "Minor correction to the javadoc to match implementation" into pi-dev am: 3cda0f29

     * Creates instance of the class to to derive keys using salted SHA256 hash.

     *

     * <p>The salted SHA256 hash is computed over the concatenation of four byte strings, salt_len +

     * salt + key_material_len + key_material, where salt_len and key_material_len are one-byte, and

     * salt + key_material_len + key_material, where salt_len and key_material_len are 4-byte, and

     * denote the number of bytes for salt and key_material, respectively.

     */

    public static @NonNull KeyDerivationParams createSha256Params(@NonNull byte[] salt) {