PSPDFPKCS7

Objective-C


@interface PSPDFPKCS7 : NSObject

Swift

class PKCS7 : NSObject

An instance of this class represents a PKCS7 (https://tools.ietf.org/html/rfc2315) cryptographic container. This container format is the most common format used for signing PDFs digitally. For example, you can use an instance of this class when you want to sign a document that was already prepared for deferred digital signing. One example scenario may be the following:

Prepare a PDF document with a digital signature form field by calling -[PSPDFSigner prepareFormElement:toBeSignedWithAppearance:contents:writingToDataSink:completion:].
Embed the data contents of this container by calling -[PSPDFSigner embedSignatureInFormElement:withContents:writingToDataSink:completion:]. In your custom implementation of the PSPDFSignatureContents interface that you pass to this method, you can return [PSPDFPKCS7 data] from inside the -[PSPDFSignatureContents signData:] method.

-init
Unavailable

Not the designated initializer

Undocumented
Declaration
Objective-C

PSPDF_EMPTY_INIT_UNAVAILABLE
+new
Unavailable

Not the designated initializer

Undocumented
Declaration
Objective-C

PSPDF_EMPTY_INIT_UNAVAILABLE


                      
                      
                      
                      
                      +create:privateKey:certificate:hashAlgorithm:encryptionAlgorithm:

Creates an instance of a PKCS7 container.

Declaration

Objective-C

+ (nonnull PSPDFPKCS7 *)create:(nonnull NSData *)digest
                    privateKey:(nonnull PSPDFPrivateKey *)privateKey
                   certificate:(nonnull PSPDFX509 *)certificate
                 hashAlgorithm:(PSPDFSignatureHashAlgorithm)hashAlgorithm
           encryptionAlgorithm:
               (PSPDFSignatureEncryptionAlgorithm)encryptionAlgorithm;

Swift

class func create(_ digest: Data, privateKey: PSPDFPrivateKey, certificate: PSPDFX509, hashAlgorithm: PDFSignatureHashAlgorithm, encryptionAlgorithm: PDFSignatureEncryptionAlgorithm) -> PKCS7

Parameters

`digest`	The digest data that will be cryptographically protected by this PKCS7. For digital signatures this is typically all the PDF document except the signature contents.
`privateKey`	The private key that will be used to encrypt the digest.
`certificate`	An instance of an X509 certificate that will be used to validate the authenticity of the signer.
`hashAlgorithm`	The hash algorithm that was used to hash the `digest` argument.
`encryptionAlgorithm`	The encryption algorithm that will be used to encrypt the data using the cryptographic resources also passed to this function as arguments.

-data
Returns this PKCS7 structure as data.
Declaration
Objective-C

- (nonnull NSData *)data;
Swift

func data() -> Data