HashAlgorithmType Enum

Lists values used to specify the signature’s secure hash algorithm (SHA) type.

Namespace: DevExpress.Office.DigitalSignatures

Assembly: DevExpress.Pdf.v22.1.Core.dll

Declaration

C#

public enum HashAlgorithmType

VB.NET

Public Enum HashAlgorithmType

Members

Name	Description
SHA1	SHA1 hashing algorithm. This type can affect the signature’s integrity, authenticity, and legal validity.
SHA256	SHA256 hashing algorithm.
SHA384	SHA384 hashing algorithm.
SHA512	SHA512 hashing algorithm.

Related API Members

The following properties accept/return HashAlgorithmType values:

• SignatureOptions.DigestMethod
• SignaturePolicy.DigestMethod

Remarks

PDF Signatures

Pass one of the HashAlgorithmType enumeration values to the Pkcs7Signer object’s constructor to specify the signature’s hashing algorithm.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the HashAlgorithmType enum.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

pdf-document-api-multiple-signatures/CS/PdfDocumentProcessor/Program.cs#L30

//Create a timestamp
ITsaClient tsaClient = new TsaClient(new Uri(@"https://freetsa.org/tsr"), HashAlgorithmType.SHA256);

How-to-add-a-digital-signature-into-a-Word-document/CS/WordDocumentDigitalSignatureSample/Program.cs#L37

if (tsaServer != null)
    options.TsaClient = new TsaClient(tsaServer, HashAlgorithmType.SHA256);

how-to-sign-a-workbook-and-validate-the-signature/CS/WorkbookDigitalSignatureSample/Program.cs#L41

if (tsaServer != null)
    options.TsaClient = new TsaClient(tsaServer, HashAlgorithmType.SHA256);

pdf-document-api-custom-tsa-client/CS/CustomTsaClient/Program.cs#L21

//Create a PKCS#7 signature:
Pkcs7Signer pkcs7Signature = new Pkcs7Signer(@"testcert.pfx", "123", HashAlgorithmType.SHA256, tsaClient);

pdf-document-processor-custom-signer/CS/CustomSigner/Program.cs#L16

//Create a timestamp:
ITsaClient tsaClient = new TsaClient(new Uri(@"https://freetsa.org/tsr"), HashAlgorithmType.SHA256);

VB.NET

pdf-document-api-multiple-signatures/VB/PdfDocumentProcessor/Program.vb#L25

'Create a timestamp
Dim tsaClient As ITsaClient = New TsaClient(New Uri("https://freetsa.org/tsr"), HashAlgorithmType.SHA256)

How-to-add-a-digital-signature-into-a-Word-document/VB/WordDocumentDigitalSignatureSample/Program.vb#L31

If tsaServer IsNot Nothing Then
    options.TsaClient = New TsaClient(tsaServer, HashAlgorithmType.SHA256)
End If

how-to-sign-a-workbook-and-validate-the-signature/VB/WorkbookDigitalSignatureSample/Program.vb#L36

If tsaServer IsNot Nothing Then
    options.TsaClient = New TsaClient(tsaServer, HashAlgorithmType.SHA256)
End If

pdf-document-api-custom-tsa-client/VB/CustomTsaClient/Program.vb#L21

'Create a PKCS#7 signature:
Dim pkcs7Signature As New Pkcs7Signer("testcert.pfx", "123", HashAlgorithmType.SHA256, tsaClient)

pdf-document-processor-custom-signer/VB/CustomSigner/Program.vb#L16

'Create a timestamp:
Dim tsaClient As ITsaClient = New TsaClient(New Uri("https://freetsa.org/tsr"), HashAlgorithmType.SHA256)