Rfc3161TimestampToken.VerifySignatureForHash Method

Definition

Namespace:

System.Security.Cryptography.Pkcs

Assembly:

System.Security.Cryptography.Pkcs.dll

Overloads

VerifySignatureForHash(ReadOnlySpan<Byte>, HashAlgorithmName, X509Certificate2, X509Certificate2Collection)	Verifies that the current token is a valid time-stamp token for the provided data hash and algorithm identifier.
VerifySignatureForHash(ReadOnlySpan<Byte>, Oid, X509Certificate2, X509Certificate2Collection)	Verifies that the current token is a valid time-stamp token for the provided data hash and algorithm identifier.

VerifySignatureForHash(ReadOnlySpan<Byte>, HashAlgorithmName, X509Certificate2, X509Certificate2Collection)

Verifies that the current token is a valid time-stamp token for the provided data hash and algorithm identifier.

public bool VerifySignatureForHash (ReadOnlySpan<byte> hash, System.Security.Cryptography.HashAlgorithmName hashAlgorithm, out System.Security.Cryptography.X509Certificates.X509Certificate2? signerCertificate, System.Security.Cryptography.X509Certificates.X509Certificate2Collection? extraCandidates = default);

member this.VerifySignatureForHash : ReadOnlySpan<byte> * System.Security.Cryptography.HashAlgorithmName * X509Certificate2 * System.Security.Cryptography.X509Certificates.X509Certificate2Collection -> bool

Public Function VerifySignatureForHash (hash As ReadOnlySpan(Of Byte), hashAlgorithm As HashAlgorithmName, ByRef signerCertificate As X509Certificate2, Optional extraCandidates As X509Certificate2Collection = Nothing) As Boolean

Parameters

hash

ReadOnlySpan<Byte>

The cryptographic hash to verify against this time-stamp token.

hashAlgorithm

HashAlgorithmName

The algorithm which produced hash.

signerCertificate

X509Certificate2

When this method returns, the certificate from the Timestamp Authority (TSA) which signed this token, or null if a signer certificate cannot be determined. This parameter is treated as uninitialized.

extraCandidates

X509Certificate2Collection

An optional collection of certificates to consider as the Timestamp Authority (TSA) certificates, in addition to any certificates that may be included within the token.

Returns

Boolean

true if the Timestamp Authority (TSA) certificate was found, the certificate public key validates the token signature, and the token matches the hash for the provided data hash and algorithm; otherwise, false.

Remarks

This method requires that the Timestamp Authority (TSA) certificate has the required extended key usage value (1.3.6.1.5.5.7.3.8), matches the token's embedded ESSCertID or ESSCertID2 identifier, has a validity range that encompasses the token's timestamp value, and has a public key that successfully validates the token's signature.

After determining the appropriate TSA certificate, this method compares the provided digest and algorithm identifier with the appropriate values from the token. If both the digest and the algorithm match the token's values, the certificate is reported via the signerCertificate and the method returns true.

If the digest does not match, the algorithm does not match, or the TSA certificate could not be determined, the method reports signerCertificate as null and returns false.

See also

• VerifySignatureForData(ReadOnlySpan<Byte>, X509Certificate2, X509Certificate2Collection)
• VerifySignatureForHash(ReadOnlySpan<Byte>, Oid, X509Certificate2, X509Certificate2Collection)

VerifySignatureForHash(ReadOnlySpan<Byte>, Oid, X509Certificate2, X509Certificate2Collection)

Verifies that the current token is a valid time-stamp token for the provided data hash and algorithm identifier.

public bool VerifySignatureForHash (ReadOnlySpan<byte> hash, System.Security.Cryptography.Oid hashAlgorithmId, out System.Security.Cryptography.X509Certificates.X509Certificate2? signerCertificate, System.Security.Cryptography.X509Certificates.X509Certificate2Collection? extraCandidates = default);

member this.VerifySignatureForHash : ReadOnlySpan<byte> * System.Security.Cryptography.Oid * X509Certificate2 * System.Security.Cryptography.X509Certificates.X509Certificate2Collection -> bool

Public Function VerifySignatureForHash (hash As ReadOnlySpan(Of Byte), hashAlgorithmId As Oid, ByRef signerCertificate As X509Certificate2, Optional extraCandidates As X509Certificate2Collection = Nothing) As Boolean

Parameters

hash

ReadOnlySpan<Byte>

The cryptographic hash to verify against this time-stamp token.

hashAlgorithmId

Oid

The OID of the hash algorithm.

signerCertificate

X509Certificate2

When this method returns, the certificate from the Timestamp Authority (TSA) which signed this token, or null if a signer certificate cannot be determined. This parameter is treated as uninitialized.

extraCandidates

X509Certificate2Collection

An optional collection of certificates to consider as the Timestamp Authority (TSA) certificates, in addition to any certificates that may be included within the token.

Returns

Boolean

true if the Timestamp Authority (TSA) certificate was found, the certificate public key validates the token signature, and the token matches the hash for the provided data hash and algorithm; otherwise, false.

Remarks

This method requires that the TSA certificate has the required extended key usage value (1.3.6.1.5.5.7.3.8), matches the token's embedded ESSCertID or ESSCertID2 identifier, has a validity range that encompasses the token's timestamp value, and has a public key that successfully validates the token's signature.

After determining the appropriate TSA certificate, this method compares the provided digest and algorithm identifier with the appropriate values from the token. If both the digest and the algorithm match the token's values, the certificate is reported via the signerCertificate and the method returns true.

If the digest does not match, the algorithm does not match, or the TSA certificate could not be determined, the method reports signerCertificate as null and returns false.

See also

• VerifySignatureForData(ReadOnlySpan<Byte>, X509Certificate2, X509Certificate2Collection)
• VerifySignatureForHash(ReadOnlySpan<Byte>, HashAlgorithmName, X509Certificate2, X509Certificate2Collection)