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@@ -1,171 +0,0 @@
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-/*:
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- To whom may be concerned: I offer professional support to all my open source projects.
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-
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- Contact: [marcin@krzyzanowskim.com](http://krzyzanowskim.com)
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- */
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-import CryptoSwift
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-import Foundation
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-/*:
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- # Data types conversion
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- */
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-let data = Data([0x01, 0x02, 0x03])
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-let bytes = data.bytes
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-let bytesHex = Array<UInt8>(hex: "0x010203")
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-let hexString = bytesHex.toHexString()
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-
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-/*:
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- # Digest
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- */
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-data.md5()
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-data.sha1()
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-data.sha224()
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-data.sha256()
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-data.sha384()
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-data.sha512()
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-
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-bytes.sha1()
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-"123".sha1()
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-Digest.sha1(bytes)
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-
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-//: Digest calculated incrementally
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-do {
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- var digest = MD5()
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- _ = try digest.update(withBytes: [0x31, 0x32])
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- _ = try digest.update(withBytes: [0x33])
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- let result = try digest.finish()
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- result.toBase64()
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-} catch {}
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-
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-/*:
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- # CRC
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- */
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-bytes.crc16()
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-bytes.crc32()
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-bytes.crc32c()
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-
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-/*:
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- # HMAC
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- */
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-
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-do {
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- let key: Array<UInt8> = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 23, 25, 26, 27, 28, 29, 30, 31, 32]
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- try Poly1305(key: key).authenticate(bytes)
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- try HMAC(key: key, variant: .sha256).authenticate(bytes)
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-} catch {}
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-
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-/*:
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- # PBKDF1, PBKDF2
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- */
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-
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-do {
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- let password: Array<UInt8> = Array("s33krit".utf8)
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- let salt: Array<UInt8> = Array("nacllcan".utf8)
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-
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- try PKCS5.PBKDF1(password: password, salt: salt, variant: .sha1, iterations: 4096).calculate()
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-
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- let value = try PKCS5.PBKDF2(password: password, salt: salt, iterations: 4096, variant: .sha256).calculate()
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- print(value)
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-} catch {}
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-
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-/*:
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- # Padding
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- */
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-Padding.pkcs7.add(to: bytes, blockSize: AES.blockSize)
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-
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-/*:
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- # ChaCha20
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- */
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-
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-do {
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- let key: Array<UInt8> = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32]
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- let iv: Array<UInt8> = [1, 2, 3, 4, 5, 6, 7, 8]
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- let message = Array<UInt8>(repeating: 7, count: 10)
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-
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- let encrypted = try ChaCha20(key: key, iv: iv).encrypt(message)
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- let decrypted = try ChaCha20(key: key, iv: iv).decrypt(encrypted)
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- print(decrypted)
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-} catch {
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- print(error)
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-}
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-
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-/*:
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- # AES
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- ### One-time shot.
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- Encrypt all data at once.
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- */
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-do {
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- let aes = try AES(key: "passwordpassword", iv: "drowssapdrowssap") // aes128
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- let ciphertext = try aes.encrypt(Array("Nullam quis risus eget urna mollis ornare vel eu leo.".utf8))
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- print(ciphertext.toHexString())
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-} catch {
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- print(error)
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-}
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-
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-/*:
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- ### Incremental encryption
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-
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- Instantiate Encryptor for AES encryption (or decryptor for decryption) and process input data partially.
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- */
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-do {
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- var encryptor = try AES(key: "passwordpassword", iv: "drowssapdrowssap").makeEncryptor()
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-
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- var ciphertext = Array<UInt8>()
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- // aggregate partial results
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- ciphertext += try encryptor.update(withBytes: Array("Nullam quis risus ".utf8))
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- ciphertext += try encryptor.update(withBytes: Array("eget urna mollis ".utf8))
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- ciphertext += try encryptor.update(withBytes: Array("ornare vel eu leo.".utf8))
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- // finish at the end
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- ciphertext += try encryptor.finish()
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-
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- print(ciphertext.toHexString())
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-} catch {
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- print(error)
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-}
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-
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-/*:
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- ### Encrypt stream
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- */
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-do {
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- // write until all is written
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- func writeTo(stream: OutputStream, bytes: Array<UInt8>) {
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- var writtenCount = 0
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- while stream.hasSpaceAvailable && writtenCount < bytes.count {
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- writtenCount += stream.write(bytes, maxLength: bytes.count)
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- }
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- }
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-
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- let aes = try AES(key: "passwordpassword", iv: "drowssapdrowssap")
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- var encryptor = try! aes.makeEncryptor()
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-
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- // prepare streams
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- let data = Data( (0 ..< 100).map { $0 })
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- let inputStream = InputStream(data: data)
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- let outputStream = OutputStream(toMemory: ())
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- inputStream.open()
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- outputStream.open()
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-
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- var buffer = Array<UInt8>(repeating: 0, count: 2)
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-
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- // encrypt input stream data and write encrypted result to output stream
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- while inputStream.hasBytesAvailable {
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- let readCount = inputStream.read(&buffer, maxLength: buffer.count)
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- if readCount > 0 {
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- try encryptor.update(withBytes: buffer[0 ..< readCount]) { bytes in
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- writeTo(stream: outputStream, bytes: bytes)
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- }
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- }
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- }
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-
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- // finalize encryption
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- try encryptor.finish { bytes in
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- writeTo(stream: outputStream, bytes: bytes)
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- }
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-
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- // print result
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- if let ciphertext = outputStream.property(forKey: Stream.PropertyKey(rawValue: Stream.PropertyKey.dataWrittenToMemoryStreamKey.rawValue)) as? Data {
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- print("Encrypted stream data: \(ciphertext.toHexString())")
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- }
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-
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-} catch {
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- print(error)
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-}
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Marcin Krzyzanowski