Struct DigitalSignature 

pub struct DigitalSignature {
    pub signer: SignerInfo,
    pub hash_algorithm: HashAlgorithm,
    pub sign_time: Option<String>,
    pub commitment: SignatureCommitment,
}

Represents the metadata structure for a digital signature part.

Generates a W3C XML Signature skeleton within the _xmlsignatures/ directory of the OPC package. Does not perform cryptographic signing — DigestValue and SignatureValue are empty placeholders. To produce a valid signature, use an external signing tool or ceremony after generating the PPTX.

Fields

signer: SignerInfo

Information about the signer.

hash_algorithm: HashAlgorithm

The hash algorithm for digest computation.

sign_time: Option<String>

Optional ISO 8601 datetime string for when the signature was created.

commitment: SignatureCommitment

The commitment type for the signature.

Implementations

impl DigitalSignature

pub const fn new(signer: SignerInfo, algorithm: HashAlgorithm) -> Self

Create a new digital signature with the given signer and algorithm.

pub const fn with_commitment(self, commitment: SignatureCommitment) -> Self

Builder method: set the commitment type.

pub fn with_sign_time(self, time: impl Into<String>) -> Self

Builder method: set the signing time.

Trait Implementations

impl Clone for DigitalSignature

fn clone(&self) -> DigitalSignature

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DigitalSignature

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for DigitalSignature

fn eq(&self, other: &DigitalSignature) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl WriteXml for DigitalSignature

fn write_xml<W: Write>(&self, w: &mut W) -> Result

Writes the structural W3C XML Signature document for this metadata.

Important: This method produces metadata/structural XML only. DigestValue and SignatureValue are empty placeholders — no cryptographic computation is performed. To produce a cryptographically valid signature, pass the generated PPTX through an external signing tool or ceremony after saving.

fn to_xml_string(&self) -> String

Convenience method: serialize to a new String.

impl Eq for DigitalSignature

impl StructuralPartialEq for DigitalSignature