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MimeKit

ApplicationPkcs7MimeSign Method (SecureMimeContext, MailboxAddress, DigestAlgorithm, MimeEntity)

Cryptographically signs the specified entity.

Namespace:  MimeKit.Cryptography
Assembly:  MimeKit (in MimeKit.dll) Version: 2.14.0
Syntax
C#
public static ApplicationPkcs7Mime Sign(
	SecureMimeContext ctx,
	MailboxAddress signer,
	DigestAlgorithm digestAlgo,
	MimeEntity entity
)

Parameters

ctx
Type: MimeKit.CryptographySecureMimeContext
The S/MIME context to use for signing.
signer
Type: MimeKitMailboxAddress
The signer.
digestAlgo
Type: MimeKit.CryptographyDigestAlgorithm
The digest algorithm to use for signing.
entity
Type: MimeKitMimeEntity
The entity.

Return Value

Type: ApplicationPkcs7Mime
The signed entity.
Exceptions
ExceptionCondition
ArgumentNullException

ctx is null.

-or-

signer is null.

-or-

entity is null.

CertificateNotFoundException A signing certificate could not be found for signer.
CmsException An error occurred in the cryptographic message syntax subsystem.
Remarks

Signs the entity using the supplied signer, digest algorithm and SecureMimeContext.

For better interoperability with other mail clients, you should use Create(SecureMimeContext, CmsSigner, MimeEntity) instead as the multipart/signed format is supported among a much larger subset of mail client software.

See Also