Rfc3161TimestampRequest.CreateFromSignerInfo Method
Definition
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Creates a timestamp request by hashing the signature of the provided signer with a specified algorithm.
public static System.Security.Cryptography.Pkcs.Rfc3161TimestampRequest CreateFromSignerInfo (System.Security.Cryptography.Pkcs.SignerInfo signerInfo, System.Security.Cryptography.HashAlgorithmName hashAlgorithm, System.Security.Cryptography.Oid? requestedPolicyId = default, ReadOnlyMemory<byte>? nonce = default, bool requestSignerCertificates = false, System.Security.Cryptography.X509Certificates.X509ExtensionCollection? extensions = default);public static System.Security.Cryptography.Pkcs.Rfc3161TimestampRequest CreateFromSignerInfo (System.Security.Cryptography.Pkcs.SignerInfo signerInfo, System.Security.Cryptography.HashAlgorithmName hashAlgorithm, System.Security.Cryptography.Oid requestedPolicyId = default, ReadOnlyMemory<byte>? nonce = default, bool requestSignerCertificates = false, System.Security.Cryptography.X509Certificates.X509ExtensionCollection extensions = default);static member CreateFromSignerInfo : System.Security.Cryptography.Pkcs.SignerInfo * System.Security.Cryptography.HashAlgorithmName * System.Security.Cryptography.Oid * Nullable<ReadOnlyMemory<byte>> * bool * System.Security.Cryptography.X509Certificates.X509ExtensionCollection -> System.Security.Cryptography.Pkcs.Rfc3161TimestampRequestPublic Shared Function CreateFromSignerInfo (signerInfo As SignerInfo, hashAlgorithm As HashAlgorithmName, Optional requestedPolicyId As Oid = Nothing, Optional nonce As Nullable(Of ReadOnlyMemory(Of Byte)) = Nothing, Optional requestSignerCertificates As Boolean = false, Optional extensions As X509ExtensionCollection = Nothing) As Rfc3161TimestampRequestParameters
- signerInfo
- SignerInfo
The CMS signer information to build a timestamp request for.
- hashAlgorithm
- HashAlgorithmName
The hash algorithm to use with this timestamp request.
- requestedPolicyId
- Oid
The Object Identifier (OID) for the timestamp policy that the Timestamp Authority (TSA) should use, or null to express no preference.
- nonce
- Nullable<ReadOnlyMemory<Byte>>
An optional nonce (number used once) to uniquely identify this request to pair it with the response. The value is interpreted as an unsigned big-endian integer and may be normalized to the encoding format.
- requestSignerCertificates
- Boolean
true to indicate the Timestamp Authority (TSA) must include the signing certificate in the issued timestamp token; otherwise, false.
- extensions
- X509ExtensionCollection
An optional collection of extensions to include in the request.
Returns
An Rfc3161TimestampRequest representing the chosen values.
Exceptions
signerInfo is null.
hashAlgorithm is not a known hash algorithm.
Remarks
This constructor creates a timestamp for the signature value of a SignerInfo value, per the recommendation of IETF RFC 3161 Appendix A (Signature Time-stamp attribute using CMS).
The nonce value in this method is treated as an unsigned, big-endian integer. This method normalizes the input to a BER INTEGER encoding before assigning the nonce value. The normalized value is returned by the GetNonce() method.
