CryptoSwift/Sources/CryptoSwift/RandomAccessCryptor.swift

//
//  CryptoSwift
//
//  Copyright (C) 2014-2017 Marcin Krzyżanowski <marcin@krzyzanowskim.com>
//  This software is provided 'as-is', without any express or implied warranty.
//
//  In no event will the authors be held liable for any damages arising from the use of this software.
//
//  Permission is granted to anyone to use this software for any purpose,including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:
//
//  - The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation is required.
//  - Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
//  - This notice may not be removed or altered from any source or binary distribution.
//

/// Random access cryptor
public protocol RandomAccessCryptor: Updatable {
    /// Seek to position in file, if block mode allows random access.
    ///
    /// - parameter to: new value of counter
    ///
    /// - returns: true if seek succeed
    @discardableResult mutating func seek(to: Int) -> Bool
}