--- product: Chilkat product_version: 11.7.0 language: dataflex language_label: DataFlex class: ScMinidriver license: bundle platforms: windows deprecated: false reference_html: https://www.chilkatsoft.com/refdoc/dataflexScMinidriverRef.html --- # Chilkat ScMinidriver — DataFlex — v11.7.0 > Chilkat 11.7.0 · language=dataflex · class=ScMinidriver · platforms=windows > Other versions: replace `11.7.0` in this URL. Other languages: `https://www.chilkatsoft.com/ai-docs/v/11.7.0//classes/ScMinidriver.md`. > Language-wide rules (install, unlock, error model, strings/bytes): `https://www.chilkatsoft.com/ai-docs/v/11.7.0/dataflex/guide.md`. ## Purpose **Available only on: windows.** Do not use this class on other platforms. **Access smart-card certificates, key containers, PINs, files, and on-card signing.** `Chilkat.ScMinidriver` is a smart-card integration class for applications that need card minidriver access to certificates, key containers, PIN authentication, card files, and on-card signing. It can retrieve and link smart-card certificates for use in other Chilkat signing classes, generate or import RSA and ECC keys, sign data directly, inspect card and container state, and manage selected card files and certificates. **Connect through minidriver** Use the Windows smart-card minidriver layer to access card capabilities without working directly at the APDU level. **Certificates and containers** Enumerate and inspect smart-card certificates, key containers, container indexes, key types, and related card state. **PIN authentication** Authenticate to the card with the required PIN before accessing protected private-key operations or card objects. **On-card signing** Sign data using private keys that remain on the smart card, including workflows where the private key is non-exportable. **Key generation and import** Generate or import RSA and ECC keys into supported card containers when the card policy allows it. **Use with Chilkat signing** Link a smart-card certificate to other Chilkat classes so PDF, XML, CMS/PKCS7, S/MIME, or other signing operations can use the card-backed private key. **Common pattern:** Connect to the smart card, verify the card and container state, authenticate with the PIN, locate the certificate and private-key container, then either sign directly or link the certificate for use by another Chilkat signing class. Use `ScMinidriver` for Windows card-minidriver certificate and key-container operations; use `Chilkat.SCard` for direct PC/SC APDU-level work, and `Chilkat.Pkcs11` for PKCS#11 token or HSM sessions. For an extended overview, see [ScMinidriver Class Overview](https://www.chilkatsoft.com/scminidriver_class_overview.asp). ## Object creation, unlocking and error handling **Object Creation** ```dataflex // (Dataflex programs use the 32-bit Chilkat ActiveX) Handle hoScMinidriver Get Create(RefClass(cComChilkatScMinidriver)) to hoScMinidriver ``` Call `Global.UnlockBundle` once at the start of the program, before using this or any other Chilkat class. Any string unlocks a fully functional 30-day trial; a purchased unlock code is used in production. See `guide.md` for the exact code in DataFlex. How failure is reported depends on the method's return type and is stated in the note under each method below. In every case the diagnostic text is in the `LastErrorText` property of the object whose method was called. ## Members common to every Chilkat class Documented once per language in `common-members.md`; listed here so this page is self-contained. | Property | Signature | Access | Meaning | |---|---|---|---| | `DebugLogFilePath` | `Function ComDebugLogFilePath Returns String Procedure Set ComDebugLogFilePath String value` | read/write | If set to a file path, this property logs the LastErrorText of each Chilkat method or property call to the specified file. | | `LastBinaryResult` | `Function ComLastBinaryResult Returns Variant` | read-only | This property is mainly used in SQL Server stored procedures to retrieve binary data from the last method call that returned binary data. | | `LastErrorHtml` | `Function ComLastErrorHtml Returns String` | read-only | Provides HTML-formatted information about the last called method or property. | | `LastErrorText` | `Function ComLastErrorText Returns String` | read-only | Provides plain text information about the last called method or property. | | `LastErrorXml` | `Function ComLastErrorXml Returns String` | read-only | Provides XML-formatted information about the last called method or property. | | `LastMethodSuccess` | `Function ComLastMethodSuccess Returns Boolean Procedure Set ComLastMethodSuccess Boolean value` | read/write | Indicates the success or failure of the most recent method call: `True` means success, `False` means failure. | | `LastStringResult` | `Function ComLastStringResult Returns String` | read-only | In SQL Server stored procedures, this property holds the string return value of the most recent method call that returns a string. | | `LastStringResultLen` | `Function ComLastStringResultLen Returns Integer` | read-only | The length, in characters, of the string contained in the LastStringResult property. | | `VerboseLogging` | `Function ComVerboseLogging Returns Boolean Procedure Set ComVerboseLogging Boolean value` | read/write | If set to `True`, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. | | `Version` | `Function ComVersion Returns String` | read-only | Version of the component/library, such as "10.1.0" | ## Member index | Member | Kind | Signature | |---|---|---| | `Atr` | property, read-only | `Function ComAtr Returns String` | | `CardName` | property, read-only | `Function ComCardName Returns String` | | `MaxContainers` | property, read-only | `Function ComMaxContainers Returns Integer` | | `RsaPaddingHash` | property, read/write | `Function ComRsaPaddingHash Returns String Procedure Set ComRsaPaddingHash String value` | | `RsaPaddingScheme` | property, read/write | `Function ComRsaPaddingScheme Returns String Procedure Set ComRsaPaddingScheme String value` | | `UncommonOptions` | property, read/write | `Function ComUncommonOptions Returns String Procedure Set ComUncommonOptions String value` | | `AcquireContext` | method | `Function ComAcquireContext String readerName Returns Boolean` | | `CardDeleteFile` | method | `Function ComCardDeleteFile String dirName String fileName Returns Boolean` | | `DeleteCert` | method | `Function ComDeleteCert cComChilkatCert cert Boolean delPrivKey Returns Boolean` | | `DeleteContext` | method | `Function ComDeleteContext Returns Boolean` | | `DeleteKeyContainer` | method | `Function ComDeleteKeyContainer Integer containerIndex Returns Boolean` | | `EnumFiles` | method | `Function ComEnumFiles String dirName cComChilkatStringTable st Returns Boolean` | | `FindCert` | method | `Function ComFindCert String certPart String partValue cComChilkatCert cert Returns Boolean` | | `GenerateKey` | method | `Function ComGenerateKey Integer containerIndex String keySpec String keyType Integer keySize String pinId Returns Boolean` | | `GetCardProperties` | method | `Function ComGetCardProperties cComChilkatJsonObject json Returns Boolean` | | `GetCert` | method | `Function ComGetCert Integer containerIndex String keySpec cComChilkatCert cert Returns Boolean` | | `GetContainerKeys` | method | `Function ComGetContainerKeys Integer containerIndex cComPublicKey sigKey cComPublicKey kexKey Returns Boolean` | | `GetCspContainerMap` | method | `Function ComGetCspContainerMap cComChilkatJsonObject json Returns Boolean` | | `ImportCert` | method | `Function ComImportCert cComChilkatCert cert Integer containerIndex String keySpec String pinId Returns Boolean` | | `ImportKey` | method | `Function ComImportKey Integer containerIndex String keySpec cComPrivateKey privKey String pinId Returns Boolean` | | `ListCerts` | method | `Function ComListCerts String certPart cComChilkatStringTable st Returns Boolean` | | `PinAuthenticate` | method | `Function ComPinAuthenticate String pinId String pin Returns Integer` | | `PinAuthenticateHex` | method | `Function ComPinAuthenticateHex String pinId String pin Returns Integer` | | `PinChange` | method | `Function ComPinChange String pinId String currentPin String newPin Returns Integer` | | `PinDeauthenticate` | method | `Function ComPinDeauthenticate String pinId Returns Boolean` | | `ReadFile` | method | `Function ComReadFile String dirName String fileName cComChilkatBinData bd Returns Boolean` | | `SignData` | method | `Function ComSignData Integer containerIndex String keySpec String hashDataAlg cComChilkatBinData bdData cComChilkatBinData bdSignedData Returns Boolean` | | `WriteFile` | method | `Function ComWriteFile String dirName String fileName cComChilkatBinData bd Returns Boolean` | ## Properties ### ScMinidriver.Atr `Chilkat 11.7.0 · dataflex · ScMinidriver · Atr · property · read-only · since 9.5.0.87` ```dataflex Function ComAtr Returns String ``` The ATR of the card in the reader. This property is set by the AquireContext method. ### ScMinidriver.CardName `Chilkat 11.7.0 · dataflex · ScMinidriver · CardName · property · read-only · since 9.5.0.87` ```dataflex Function ComCardName Returns String ``` The name of the card in the reader. This property is set by the AquireContext method. ### ScMinidriver.MaxContainers `Chilkat 11.7.0 · dataflex · ScMinidriver · MaxContainers · property · read-only · since 9.5.0.87` ```dataflex Function ComMaxContainers Returns Integer ``` The maximum number of key containers available. The 1st key container is at index 0. Each key container can potentially contain one signature key, and one key exchange key. ### ScMinidriver.RsaPaddingHash `Chilkat 11.7.0 · dataflex · ScMinidriver · RsaPaddingHash · property · read/write · since 9.5.0.87` ```dataflex Function ComRsaPaddingHash Returns String Procedure Set ComRsaPaddingHash String value ``` If an RSA key is used for signing, this is the hash algorithm to used in conjunction with the padding scheme. It can be `SHA1`, `SHA256`, `SHA384`, or `SHA512`. The default is `SHA256`. ### ScMinidriver.RsaPaddingScheme `Chilkat 11.7.0 · dataflex · ScMinidriver · RsaPaddingScheme · property · read/write · since 9.5.0.87` ```dataflex Function ComRsaPaddingScheme Returns String Procedure Set ComRsaPaddingScheme String value ``` If an RSA key is used for signing, this is the padding scheme to use. It can be `PKCS` or `PSS`. The default is `PSS`. ### ScMinidriver.UncommonOptions `Chilkat 11.7.0 · dataflex · ScMinidriver · UncommonOptions · property · read/write · since 9.5.0.87` ```dataflex Function ComUncommonOptions Returns String Procedure Set ComUncommonOptions String value ``` This is a catch-all property to be used for uncommon needs. This property defaults to the empty string and should typically remain empty. ## Methods ### ScMinidriver.AcquireContext `Chilkat 11.7.0 · dataflex · ScMinidriver · AcquireContext · method · since 9.5.0.87` ```dataflex Function ComAcquireContext String readerName Returns Boolean ``` Initializes communication with the card inserted in the given reader. Reader names can be discovered via the SCard.ListReaders or SCard.FindSmartcards methods. If successful, the Atr and CardName properties will be set. Returns True for success, False for failure. ### ScMinidriver.CardDeleteFile `Chilkat 11.7.0 · dataflex · ScMinidriver · CardDeleteFile · method · since 9.5.0.88` ```dataflex Function ComCardDeleteFile String dirName String fileName Returns Boolean ``` Deletes the file specified by `dirName` and `fileName`. `dirName` is the name of the directory that contains the file, or the empty string for root. Returns True for success, False for failure. ### ScMinidriver.DeleteCert `Chilkat 11.7.0 · dataflex · ScMinidriver · DeleteCert · method · since 9.5.0.88` ```dataflex Function ComDeleteCert cComChilkatCert cert Boolean delPrivKey Returns Boolean ``` Deletes a certificate and optionally its associated private key from the smart card. If `delPrivKey` is `True`, then the associated private key, if it exists, is also deleted. Returns True for success, False for failure. ### ScMinidriver.DeleteContext `Chilkat 11.7.0 · dataflex · ScMinidriver · DeleteContext · method · since 9.5.0.87` ```dataflex Function ComDeleteContext Returns Boolean ``` This function reverses the effect of AcquireContext and severs the communication between the Base CSP/KSP and the card minidriver. The Atr and CardName properties are cleared. Returns True for success, False for failure. ### ScMinidriver.DeleteKeyContainer `Chilkat 11.7.0 · dataflex · ScMinidriver · DeleteKeyContainer · method · since 9.5.0.87` ```dataflex Function ComDeleteKeyContainer Integer containerIndex Returns Boolean ``` Deletes the key container at the given `containerIndex`. This deletes both the `signature` and `key exchange` keys that may be contained in the specified key container. Returns True for success, False for failure. ### ScMinidriver.EnumFiles `Chilkat 11.7.0 · dataflex · ScMinidriver · EnumFiles · method · since 9.5.0.87` ```dataflex Function ComEnumFiles String dirName cComChilkatStringTable st Returns Boolean ``` Get the list of files in the directory specified by `dirName`. Pass the empty string for the root directory. The filenames are returned in `st`. Returns True for success, False for failure. ### ScMinidriver.FindCert `Chilkat 11.7.0 · dataflex · ScMinidriver · FindCert · method · since 9.5.0.87` ```dataflex Function ComFindCert String certPart String partValue cComChilkatCert cert Returns Boolean ``` Finds the certificate where the given `certPart` equals the `partValue`. Possible values for `certPart` are: `subjectDN`, `subjectDN_withTags`, `subjectCN`, `serial`, or `serial:issuerCN`. The `cert` is loaded with the certificate if successful. Note: If successful, the `cert` will be linked internally with this ScMinidriver session such that certificate can be used for signing on the smart card when used in other Chilkat classes such as XmlDSigGen, Pdf, Crypt2, Mime, MailMan, etc. Returns True for success, False for failure. ### ScMinidriver.GenerateKey `Chilkat 11.7.0 · dataflex · ScMinidriver · GenerateKey · method · since 9.5.0.87` ```dataflex Function ComGenerateKey Integer containerIndex String keySpec String keyType Integer keySize String pinId Returns Boolean ``` Generates a key to be stored in either the `signature` or `key exchange` location within a key container. Creates the key container if it does not already exist. Otherwise replaces the key in the key container. The `keySpec` can be `sig` or `kex` to specify either the `signature` or `key exchange` location. The `keyType` can be `ecc` or `rsa`. For RSA keys, the `keySize` is the size of the key in bits, such as 1024, 2048, 4096, etc. (2048 is a typical value.) For ECC keys, the size can be 256, 384, or 521. The `pinId` can be `user`, or `3` through `7`. (It is typically `user`.) Returns True for success, False for failure. ### ScMinidriver.GetCardProperties `Chilkat 11.7.0 · dataflex · ScMinidriver · GetCardProperties · method · since 9.5.0.87` ```dataflex Function ComGetCardProperties cComChilkatJsonObject json Returns Boolean ``` Gets all card properties and returns them in `json`. See the example below. Returns True for success, False for failure. ### ScMinidriver.GetCert `Chilkat 11.7.0 · dataflex · ScMinidriver · GetCert · method · since 9.5.0.87` ```dataflex Function ComGetCert Integer containerIndex String keySpec cComChilkatCert cert Returns Boolean ``` Get the certificate at the specified `containerIndex` and `keySpec`. The `keySpec` can be `sig` or `kex` to specify either the `signature` or `key exchange` location within the container. The `containerIndex` can be -1 to choose the first key container with a certificate. The `keySpec` can also be `any` to choose either `sig` or `kex` based on which is present, with preference given to `sig` if both are present. The `cert` is loaded with the certificate if successful. Note: If successful, the `cert` will be linked internally with this ScMinidriver session such that certificate can be used for signing on the smart card when used in other Chilkat classes such as XmlDSigGen, Pdf, Crypt2, Mime, MailMan, etc. Returns True for success, False for failure. ### ScMinidriver.GetContainerKeys `Chilkat 11.7.0 · dataflex · ScMinidriver · GetContainerKeys · method · since 9.5.0.87` ```dataflex Function ComGetContainerKeys Integer containerIndex cComPublicKey sigKey cComPublicKey kexKey Returns Boolean ``` Queries a key container to get the keys that are present. If the signature public key is present, it is returned in `sigKey`. If the key exchange key is present, it is returned in `kexKey`. Returns True for success, False for failure. ### ScMinidriver.GetCspContainerMap `Chilkat 11.7.0 · dataflex · ScMinidriver · GetCspContainerMap · method · since 9.5.0.87` ```dataflex Function ComGetCspContainerMap cComChilkatJsonObject json Returns Boolean ``` Returns the contents of the CSP container map file (cmapfile). The information is returned in the `json`. This gives an overview of what key containers and certificates exist in the smart card from a CSP's point of view. See the example linked below. Returns True for success, False for failure. ### ScMinidriver.ImportCert `Chilkat 11.7.0 · dataflex · ScMinidriver · ImportCert · method · since 9.5.0.87` ```dataflex Function ComImportCert cComChilkatCert cert Integer containerIndex String keySpec String pinId Returns Boolean ``` Imports a certificate with its private key onto the smart card. The `cert` must have an accessible private key, such as will be the case if the `cert` was loaded from a .pfx/.p12, or if the `cert` was loaded from a Windows certificate store where the private key exists (and can be exported from the Windows certificate store). The `containerIndex` is the container index. It can range from 0 to the MaxContainers-1. The `keySpec` can be `sig` or `kex` to specify either the `signature` or `key exchange` location within the container. The `pinId` can be `user`, or `3` through `7`. (It is typically `user`.) Returns True for success, False for failure. ### ScMinidriver.ImportKey `Chilkat 11.7.0 · dataflex · ScMinidriver · ImportKey · method · since 9.5.0.87` ```dataflex Function ComImportKey Integer containerIndex String keySpec cComPrivateKey privKey String pinId Returns Boolean ``` Imports a key to be stored in either the `signature` or `key exchange` location within a key container. Creates the key container if it does not already exist. Otherwise replaces the specified key in the key container. The `keySpec` can be `sig` or `kex` to specify either the `signature` or `key exchange` location. The `privKey` is the private key to import. The ARG5 can be `user`, or `3` through `7`. (It is typically `user`.) Returns True for success, False for failure. ### ScMinidriver.ListCerts `Chilkat 11.7.0 · dataflex · ScMinidriver · ListCerts · method · since 9.5.0.87` ```dataflex Function ComListCerts String certPart cComChilkatStringTable st Returns Boolean ``` Lists the certs found on the smart card. The `certPart` indicates the information to be returned from each certificate. Possible values are: `subjectDN`, `subjectDN_withTags`, `subjectCN`, `serial`, or `serial:issuerCN`. The information is returned in `st`. Returns True for success, False for failure. ### ScMinidriver.PinAuthenticate `Chilkat 11.7.0 · dataflex · ScMinidriver · PinAuthenticate · method · since 9.5.0.87` ```dataflex Function ComPinAuthenticate String pinId String pin Returns Integer ``` Performs regular PIN authentication. The `pinId` can be `user`, `admin`, or `3` through `7`. (It is typically `user`.) The `pin` is the alphanumeric PIN. Returns 0 for success. If not successful, the return value indicates the number of attempts remaining before the PIN is locked. (The number of times an incorrect PIN may be presented to the card before the PIN is blocked, and requires the admin to unblock it.) If the PIN is already blocked, the return value is -1. If the method fails for some other reason, such as if a context has not yet been acquired, the return value is -2. ### ScMinidriver.PinAuthenticateHex `Chilkat 11.7.0 · dataflex · ScMinidriver · PinAuthenticateHex · method · since 9.5.0.87` ```dataflex Function ComPinAuthenticateHex String pinId String pin Returns Integer ``` The same as PinAutheneticate, but the PIN is passed as a hex string. For example, to pass a PIN of 0x01, 0x02, 0x03, 0x04, pass `01020304`. ### ScMinidriver.PinChange `Chilkat 11.7.0 · dataflex · ScMinidriver · PinChange · method · since 9.5.0.87` ```dataflex Function ComPinChange String pinId String currentPin String newPin Returns Integer ``` Changes a PIN. The `pinId` can be `user`, `admin`, or `3` through `7`. (It is typically `user`.) The `currentPin` is the current alphanumeric PIN. The `newPin` is the new PIN. Returns 0 for success. If not successful, the return value indicates the number of attempts remaining before the PIN is locked. (The number of times an incorrect PIN may be presented to the card before the PIN is blocked, and requires the admin to unblock it.) If the PIN is already blocked, the return value is -1. If the method fails for some other reason, such as if a context has not yet been acquired, the return value is -2. ### ScMinidriver.PinDeauthenticate `Chilkat 11.7.0 · dataflex · ScMinidriver · PinDeauthenticate · method · since 9.5.0.87` ```dataflex Function ComPinDeauthenticate String pinId Returns Boolean ``` Reverses a previous PIN authentication without resetting the card. The `pinId` can be `user`, `admin`, or `3` through `7`. (It is typically `user`.) Returns True for success, False for failure. ### ScMinidriver.ReadFile `Chilkat 11.7.0 · dataflex · ScMinidriver · ReadFile · method · since 9.5.0.87` ```dataflex Function ComReadFile String dirName String fileName cComChilkatBinData bd Returns Boolean ``` Reads the entire file specified by `dirName` and `fileName` into `bd`. `dirName` is the name of the directory that contains the file, or the empty string for root. Returns True for success, False for failure. ### ScMinidriver.SignData `Chilkat 11.7.0 · dataflex · ScMinidriver · SignData · method · since 9.5.0.87` ```dataflex Function ComSignData Integer containerIndex String keySpec String hashDataAlg cComChilkatBinData bdData cComChilkatBinData bdSignedData Returns Boolean ``` Signs the data passed in `bdData`. The `hashDataAlg` can be `sha1`, `sha256`, `sha384`, `sha512`, or `none`. If not equal to `none`, then the hash of the data passed in `bdData` is signed. The `containerIndex` specifies the key container. By specifying the key container, you are almost specifying the key. A key container can contain two keys: A signature key, and a key-exchange key. The `keySpec` indicates which of these two keys to use. `keySpec` should be set to `sig` or `kex`. Note: The type of signature created, such as RSA or ECC, is determined by the type of key that exists in the key container (specified by `containerIndex` and `keySpec`). If it is an RSA key, additional options can be specified via the RsaPaddingScheme and RsaPaddingHash properties. If successful, the signature is written to `bdSignedData`. Returns True for success, False for failure. ### ScMinidriver.WriteFile `Chilkat 11.7.0 · dataflex · ScMinidriver · WriteFile · method · since 9.5.0.87` ```dataflex Function ComWriteFile String dirName String fileName cComChilkatBinData bd Returns Boolean ``` Writes the entire file specified by `dirName` and `fileName`. `dirName` is the name of the directory that contains the file, or the empty string for root. The entire contents of `bd` are written to the file on the smart card. Returns True for success, False for failure. ## Related classes [`BinData`](https://www.chilkatsoft.com/ai-docs/v/11.7.0/dataflex/classes/BinData.md), [`Cert`](https://www.chilkatsoft.com/ai-docs/v/11.7.0/dataflex/classes/Cert.md), [`JsonObject`](https://www.chilkatsoft.com/ai-docs/v/11.7.0/dataflex/classes/JsonObject.md), [`PrivateKey`](https://www.chilkatsoft.com/ai-docs/v/11.7.0/dataflex/classes/PrivateKey.md), [`PublicKey`](https://www.chilkatsoft.com/ai-docs/v/11.7.0/dataflex/classes/PublicKey.md), [`StringTable`](https://www.chilkatsoft.com/ai-docs/v/11.7.0/dataflex/classes/StringTable.md)