SignaturePolicy.DigestMethod Property

SECURITY-RELATED CONSIDERATIONS

Using weak or outdated hash algorithms (such as SHA-1) may allow threat actors to manipulate or predict hash values. Use modern, secure alternatives (such as SHA-256 or stronger).

Gets or sets the signature digest method (the algorithm used to hash the policy).

Namespace: DevExpress.Office.DigitalSignatures

Assembly: DevExpress.Docs.v25.2.dll

NuGet Package: DevExpress.Document.Processor

Declaration

C#

public HashAlgorithmType DigestMethod { get; set; }

VB.NET

Public Property DigestMethod As HashAlgorithmType

Property Value

Type	Description
HashAlgorithmType	An enumeration value that indicates the digest method.

Available values:

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.

Example

The code sample below defines the signature policy:

C#

SignatureInfo signatureInfo = new SignatureInfo();
SignaturePolicy policy = signatureInfo.Policy;
policy.IsImplied = false;
policy.Identifier = "https://...";
policy.DigestMethod = HashAlgorithmType.SHA384;

VB.NET

Dim signatureInfo As New SignatureInfo()
Dim policy As SignaturePolicy = signatureInfo.Policy
policy.IsImplied = False
policy.Identifier = "https://..."
policy.DigestMethod = HashAlgorithmType.SHA384