//
|
// CryptoSwift
|
//
|
// Copyright (C) 2014-2022 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.
|
//
|
|
public enum SignatureError: Error {
|
case sign
|
case verify
|
}
|
|
public protocol Signature: AnyObject {
|
var keySize: Int { get }
|
|
/// Sign the given bytes at once
|
///
|
/// - parameter bytes: Plaintext data to be signed
|
/// - returns: The signed data
|
func sign(_ bytes: ArraySlice<UInt8>) throws -> Array<UInt8>
|
/// Sign the given bytes at once
|
///
|
/// - parameter bytes: Plaintext data to be signed
|
/// - returns: The signed data
|
func sign(_ bytes: Array<UInt8>) throws -> Array<UInt8>
|
|
/// Verify the given bytes against the expected data
|
///
|
/// - parameter signature: Signature data
|
/// - parameter expectedData: The original data that you expected to be signed
|
/// - returns: `True` when the signature is valid for the expected data, `False` otherwise.
|
func verify(signature: ArraySlice<UInt8>, for expectedData: ArraySlice<UInt8>) throws -> Bool
|
/// Verify the given bytes against the expected data
|
///
|
/// - parameter signature: Signature data
|
/// - parameter expectedData: The original data that you expected to be signed
|
/// - returns: `True` when the signature is valid for the expected data, `False` otherwise.
|
func verify(signature: Array<UInt8>, for expectedData: Array<UInt8>) throws -> Bool
|
}
|
|
extension Signature {
|
/// Sign the given bytes at once
|
///
|
/// - parameter bytes: Plaintext data to be signed
|
/// - returns: The signed data
|
public func sign(_ bytes: Array<UInt8>) throws -> Array<UInt8> {
|
try self.sign(bytes.slice)
|
}
|
|
/// Verify the given bytes against the expected data
|
///
|
/// - parameter signature: Signature data
|
/// - parameter expectedData: The original data that you expected to be signed
|
/// - returns: `True` when the signature is valid for the expected data, `False` otherwise.
|
public func verify(signature: Array<UInt8>, for expectedData: Array<UInt8>) throws -> Bool {
|
try self.verify(signature: signature.slice, for: expectedData.slice)
|
}
|
}
|