ScMinidriver VB.NET Reference Documentation

ScMinidriver

Current Version: 9.5.0.88

A wrapper around the Microsoft Smart Card Minidriver API.

This class is introduced in Chilkat v9.5.0.87.

Object Creation

Dim obj As New Chilkat.ScMinidriver()

Properties

Atr
Atr As String (ReadOnly)
Introduced in version 9.5.0.87

The ATR of the card in the reader. This property is set by the AquireContext method.

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CardName
CardName As String (ReadOnly)
Introduced in version 9.5.0.87

The name of the card in the reader. This property is set by the AquireContext method.

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DebugLogFilePath
DebugLogFilePath As String

If set to a file path, causes each Chilkat method or property call to automatically append it's LastErrorText to the specified log file. The information is appended such that if a hang or crash occurs, it is possible to see the context in which the problem occurred, as well as a history of all Chilkat calls up to the point of the problem. The VerboseLogging property can be set to provide more detailed information.

This property is typically used for debugging the rare cases where a Chilkat method call hangs or generates an exception that halts program execution (i.e. crashes). A hang or crash should generally never happen. The typical causes of a hang are:

  1. a timeout related property was set to 0 to explicitly indicate that an infinite timeout is desired,
  2. the hang is actually a hang within an event callback (i.e. it is a hang within the application code), or
  3. there is an internal problem (bug) in the Chilkat code that causes the hang.

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LastErrorHtml
LastErrorHtml As String (ReadOnly)

Provides information in HTML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

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LastErrorText
LastErrorText As String (ReadOnly)

Provides information in plain-text format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

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LastErrorXml
LastErrorXml As String (ReadOnly)

Provides information in XML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

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LastMethodSuccess
LastMethodSuccess As Boolean
Introduced in version 9.5.0.52

Indicate whether the last method call succeeded or failed. A value of True indicates success, a value of False indicates failure. This property is automatically set for method calls. It is not modified by property accesses. The property is automatically set to indicate success for the following types of method calls:

  • Any method that returns a string.
  • Any method returning a Chilkat object, binary bytes, or a date/time.
  • Any method returning a standard boolean status value where success = True and failure = False.
  • Any method returning an integer where failure is defined by a return value less than zero.

Note: Methods that do not fit the above requirements will always set this property equal to True. For example, a method that returns no value (such as a "void" in C++) will technically always succeed.

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MaxContainers
MaxContainers As Integer (ReadOnly)
Introduced in version 9.5.0.87

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.

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RsaPaddingHash
RsaPaddingHash As String
Introduced in version 9.5.0.87

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".

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RsaPaddingScheme
RsaPaddingScheme As String
Introduced in version 9.5.0.87

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".

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UncommonOptions
UncommonOptions As String
Introduced in version 9.5.0.87

This is a catch-all property to be used for uncommon needs. This property defaults to the empty string and should typically remain empty.

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VerboseLogging
VerboseLogging As Boolean

If set to True, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is False. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.

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Version
Version As String (ReadOnly)

Version of the component/library, such as "9.5.0.63"

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Methods

AcquireContext
Function AcquireContext(ByVal readerName As String) As Boolean
Introduced in version 9.5.0.87

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.

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CardDeleteFile
Function CardDeleteFile(ByVal dirName As String, ByVal fileName As String) As Boolean
Introduced in version 9.5.0.88

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.

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DeleteCert
Function DeleteCert(ByVal cert As Cert, ByVal delPrivKey As Boolean) As Boolean
Introduced in version 9.5.0.88

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.

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DeleteContext
Function DeleteContext() As Boolean
Introduced in version 9.5.0.87

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.

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DeleteKeyContainer
Function DeleteKeyContainer(ByVal containerIndex As Integer) As Boolean
Introduced in version 9.5.0.87

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.

More Information and Examples
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EnumFiles
Function EnumFiles(ByVal dirName As String, ByVal st As StringTable) As Boolean
Introduced in version 9.5.0.87

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.

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FindCert
Function FindCert(ByVal certPart As String, ByVal partValue As String, ByVal cert As Cert) As Boolean
Introduced in version 9.5.0.87

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.

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GenerateKey
Function GenerateKey(ByVal containerIndex As Integer, ByVal keySpec As String, ByVal keyType As String, ByVal keySize As Integer, ByVal pinId As String) As Boolean
Introduced in version 9.5.0.87

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.

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GetCardProperties
Function GetCardProperties(ByVal json As JsonObject) As Boolean
Introduced in version 9.5.0.87

Gets all card properties and returns them in json. See the example below.

Returns True for success, False for failure.

More Information and Examples
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GetCert
Function GetCert(ByVal containerIndex As Integer, ByVal keySpec As String, ByVal cert As Cert) As Boolean
Introduced in version 9.5.0.87

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.

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GetContainerKeys
Function GetContainerKeys(ByVal containerIndex As Integer, ByVal sigKey As PublicKey, ByVal kexKey As PublicKey) As Boolean
Introduced in version 9.5.0.87

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.

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GetCspContainerMap
Function GetCspContainerMap(ByVal json As JsonObject) As Boolean
Introduced in version 9.5.0.87

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.

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ImportCert
Function ImportCert(ByVal cert As Cert, ByVal containerIndex As Integer, ByVal keySpec As String, ByVal pinId As String) As Boolean
Introduced in version 9.5.0.87

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.

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ImportKey
Function ImportKey(ByVal containerIndex As Integer, ByVal keySpec As String, ByVal privKey As PrivateKey, ByVal pinId As String) As Boolean
Introduced in version 9.5.0.87

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.

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ListCerts
Function ListCerts(ByVal certPart As String, ByVal st As StringTable) As Boolean
Introduced in version 9.5.0.87

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.

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PinAuthenticate
Function PinAuthenticate(ByVal pinId As String, ByVal pin As String) As Integer
Introduced in version 9.5.0.87

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.

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PinAuthenticateHex
Function PinAuthenticateHex(ByVal pinId As String, ByVal pin As String) As Integer
Introduced in version 9.5.0.87

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".

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PinChange
Function PinChange(ByVal pinId As String, ByVal currentPin As String, ByVal newPin As String) As Integer
Introduced in version 9.5.0.87

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.

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PinDeauthenticate
Function PinDeauthenticate(ByVal pinId As String) As Boolean
Introduced in version 9.5.0.87

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.

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ReadFile
Function ReadFile(ByVal dirName As String, ByVal fileName As String, ByVal bd As BinData) As Boolean
Introduced in version 9.5.0.87

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.

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SignData
Function SignData(ByVal containerIndex As Integer, ByVal keySpec As String, ByVal hashDataAlg As String, ByVal bdData As BinData, ByVal bdSignedData As BinData) As Boolean
Introduced in version 9.5.0.87

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.

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WriteFile
Function WriteFile(ByVal dirName As String, ByVal fileName As String, ByVal bd As BinData) As Boolean
Introduced in version 9.5.0.87

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.

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