CertStore C# WinRT Reference Documentation

CertStore

Current Version: 9.5.0.73

Represents a collection of certificates. The certificates may be loaded from a PFX (PKCS#12) or from a Windows-based certificate store.

Many of the methods of this class are only applicable when running on a MS Windows operating system. The methods for opening, creating, and modifying Windows-based certificate stores (registry-based, file-based, and memory-based) are (of course) Windows-only. However, the methods for loading certs from PFX (PKCS#12), are valid on all supported operating systems, including Linux, MAC OS X, Windows, etc.

Object Creation

Chilkat.CertStore obj = new Chilkat.CertStore();

Properties

AvoidWindowsPkAccess
public bool AvoidWindowsPkAccess {get; set; }

Applies only when running on a Microsoft Windows operating system. If true, then any method that returns a certificate will not try to also access the associated private key, assuming one exists. This is useful if the certificate was installed with high-security such that a private key access would trigger the Windows OS to display a security warning dialog. The default value of this property is false.

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DebugLogFilePath
public string DebugLogFilePath {get; set; }

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
public string LastErrorHtml {get; }

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
public string LastErrorText {get; }

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
public string LastErrorXml {get; }

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
public bool LastMethodSuccess {get; set; }
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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NumCertificates
public int NumCertificates {get; }

The number of certificates held in the certificate store.

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VerboseLogging
public bool VerboseLogging {get; set; }

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
public string Version {get; }

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

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Methods

FindCertByRfc822Name
public Cert FindCertByRfc822Name(string name);

Locates and returns a certificate by its RFC 822 name.

If multiple certificates match, then non-expired certificates will take precedence over expired certificates. In other words, Chilkat will aways return the non-expired certificate over the expired certificate.

Returns null on failure

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FindCertBySerial
public Cert FindCertBySerial(string str);

Finds and returns the certificate that has the matching serial number.

Returns null on failure.

Returns null on failure

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FindCertBySha1Thumbprint
public Cert FindCertBySha1Thumbprint(string str);

Finds a certificate by it's SHA-1 thumbprint. The thumbprint is a hexidecimal string.

Returns null on failure.

Returns null on failure

More Information and Examples
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FindCertBySubject
public Cert FindCertBySubject(string str);

Finds a certificate where one of the Subject properties (SubjectCN, SubjectE, SubjectO, SubjectOU, SubjectL, SubjectST, SubjectC) matches exactly (but case insensitive) with the passed string. A match in SubjectCN will be tried first, followed by SubjectE, and SubjectO. After that, the first match found in SubjectOU, SubjectL, SubjectST, or SubjectC, but in no guaranteed order, is returned. All matches are case insensitive.

Returns null on failure.

Returns null on failure

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FindCertBySubjectCN
public Cert FindCertBySubjectCN(string str);

Finds a certificate where the SubjectCN property (common name) matches exactly (but case insensitive) with the passed string

Returns null on failure.

Returns null on failure

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FindCertBySubjectE
public Cert FindCertBySubjectE(string str);

Finds a certificate where the SubjectE property (email address) matches exactly (but case insensitive) with the passed string. This function differs from FindCertForEmail in that the certificate does not need to match the ForSecureEmail property.

Returns null on failure.

Returns null on failure

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FindCertBySubjectO
public Cert FindCertBySubjectO(string str);

Finds a certificate where the SubjectO property (organization) matches exactly (but case insensitive) with the passed string.

Returns null on failure.

Returns null on failure

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FindCertForEmail
public Cert FindCertForEmail(string emailAddress);

(This method only available on Microsoft Windows operating systems.)
Finds a certificate that can be used to send secure email to the passed email address. A certificate matches only if the ForSecureEmail property is TRUE, and the email address matches exactly (but case insensitive) with the SubjectE property. Returns NULL if no matches are found.

Returns null on failure.

Returns null on failure

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GetCertificate
public Cert GetCertificate(int index);

Returns the Nth certificate in the store. The first certificate is at index 0.

Returns null on failure.

Returns null on failure

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LoadPemFile
public bool LoadPemFile(string pemPath);

Loads the certificates contained within a PEM formatted file.

Returns true for success, false for failure.

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LoadPemStr
public bool LoadPemStr(string pemString);

Loads the certificates contained within an in-memory PEM formatted string.

Returns true for success, false for failure.

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LoadPfxData
public bool LoadPfxData(byte[] pfxData, string password);

Loads a PFX from an in-memory image of a PFX file. Once loaded, the certificates within the PFX may be searched via the Find* methods. It is also possible to iterate from 0 to NumCertficates-1, calling GetCertificate for each index, to retrieve each certificate within the PFX.

Returns true for success, false for failure.

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LoadPfxFile
public bool LoadPfxFile(string pfxFilename, string password);

Loads a PFX file. Once loaded, the certificates within the PFX may be searched via the Find* methods. It is also possible to iterate from 0 to NumCertficates-1, calling GetCertificate for each index, to retrieve each certificate within the PFX.

Returns true for success, false for failure.

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