//
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// CryptoSwift
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//
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// Copyright (C) 2014-2022 Marcin Krzyżanowski <marcin@krzyzanowskim.com>
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// This software is provided 'as-is', without any express or implied warranty.
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//
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// In no event will the authors be held liable for any damages arising from the use of this software.
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//
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// 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:
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//
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// - 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.
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// - Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
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// - This notice may not be removed or altered from any source or binary distribution.
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//
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import Foundation
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extension Data {
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/// Two octet checksum as defined in RFC-4880. Sum of all octets, mod 65536
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public func checksum() -> UInt16 {
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let s = self.withUnsafeBytes { buf in
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return buf.lazy.map(UInt32.init).reduce(UInt32(0), +)
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}
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return UInt16(s % 65535)
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}
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public func md5() -> Data {
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Data( Digest.md5(bytes))
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}
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public func sha1() -> Data {
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Data( Digest.sha1(bytes))
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}
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public func sha224() -> Data {
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Data( Digest.sha224(bytes))
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}
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public func sha256() -> Data {
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Data( Digest.sha256(bytes))
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}
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public func sha384() -> Data {
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Data( Digest.sha384(bytes))
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}
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public func sha512() -> Data {
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Data( Digest.sha512(bytes))
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}
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public func sha3(_ variant: SHA3.Variant) -> Data {
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Data( Digest.sha3(bytes, variant: variant))
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}
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public func crc32(seed: UInt32? = nil, reflect: Bool = true) -> Data {
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Data( Checksum.crc32(bytes, seed: seed, reflect: reflect).bytes())
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}
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public func crc32c(seed: UInt32? = nil, reflect: Bool = true) -> Data {
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Data( Checksum.crc32c(bytes, seed: seed, reflect: reflect).bytes())
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}
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public func crc16(seed: UInt16? = nil) -> Data {
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Data( Checksum.crc16(bytes, seed: seed).bytes())
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}
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public func encrypt(cipher: Cipher) throws -> Data {
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Data( try cipher.encrypt(bytes.slice))
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}
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public func decrypt(cipher: Cipher) throws -> Data {
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Data( try cipher.decrypt(bytes.slice))
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}
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public func authenticate(with authenticator: Authenticator) throws -> Data {
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Data( try authenticator.authenticate(bytes))
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}
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}
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extension Data {
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public init(hex: String) {
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self.init(Array<UInt8>(hex: hex))
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}
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public var bytes: Array<UInt8> {
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Array(self)
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}
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public func toHexString() -> String {
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self.bytes.toHexString()
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}
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}
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