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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| // | ||
| // GetEntropyCommand.swift | ||
| // TangemSdk | ||
| // | ||
| // Created by Alexander Osokin on 27.03.2023. | ||
| // Copyright © 2023 Tangem AG. All rights reserved. | ||
| // | ||
|
|
||
| import Foundation | ||
|
|
||
| /// Deserialized response from the Tangem card after `GetEntropyCommand`. | ||
| @available(iOS 13.0, *) | ||
| public struct GetEntropyResponse: JSONStringConvertible { | ||
| /// Unique Tangem card ID number. | ||
| public let cardId: String | ||
| /// Random bytes | ||
| public let data: Data | ||
| } | ||
|
|
||
| /// Generate OTP on the card. | ||
| @available(iOS 13.0, *) | ||
| public class GetEntropyCommand: Command { | ||
| public var preflightReadMode: PreflightReadMode { .readCardOnly } | ||
|
|
||
| public init() {} | ||
|
|
||
| deinit { | ||
| Log.debug("GetEntropyCommand deinit") | ||
| } | ||
|
|
||
| func performPreCheck(_ card: Card) -> TangemSdkError? { | ||
| // guard card.firmwareVersion >= .isExternalWalletsAllowed else { | ||
| // return TangemSdkError.walletNotFound | ||
| // } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func serialize(with environment: SessionEnvironment) throws -> CommandApdu { | ||
| let tlvBuilder = try createTlvBuilder(legacyMode: environment.legacyMode) | ||
| .append(.pin, value: environment.accessCode.value) | ||
| .append(.cardId, value: environment.card?.cardId) | ||
|
|
||
| return CommandApdu(.getEntropy, tlv: tlvBuilder.serialize()) | ||
| } | ||
|
|
||
| func deserialize(with environment: SessionEnvironment, from apdu: ResponseApdu) throws -> GetEntropyResponse { | ||
| guard let tlv = apdu.getTlvData(encryptionKey: environment.encryptionKey) else { | ||
| throw TangemSdkError.deserializeApduFailed | ||
| } | ||
|
|
||
| let decoder = TlvDecoder(tlv: tlv) | ||
|
|
||
| return GetEntropyResponse(cardId: try decoder.decode(.cardId), | ||
| data: try decoder.decode(.issuerData)) | ||
| } | ||
| } |