diff options
Diffstat (limited to 'openpgp/src/packet/signature/subpacket.rs')
| -rw-r--r-- | openpgp/src/packet/signature/subpacket.rs | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/openpgp/src/packet/signature/subpacket.rs b/openpgp/src/packet/signature/subpacket.rs index 84d32c9d..0a2410aa 100644 --- a/openpgp/src/packet/signature/subpacket.rs +++ b/openpgp/src/packet/signature/subpacket.rs @@ -2006,6 +2006,8 @@ impl signature::SignatureBuilder { -> Result<Self> where T: Into<time::SystemTime> { + self.overrode_creation_time = true; + self.hashed_area.replace(Subpacket::new( SubpacketValue::SignatureCreationTime( creation_time.into().try_into()?), @@ -2014,6 +2016,55 @@ impl signature::SignatureBuilder { Ok(self) } + /// Causes the builder to use an existing signature creation time + /// subpacket. + /// + /// Unless `SignatureBuilder::set_signature_creation_time` has + /// been called, `SignatureBuilder` sets the + /// `SignatureCreationTime` subpacket when the signature is + /// generated. Calling this function causes the signature + /// generation code to use the existing `Signature Creation Time` + /// subpacket. + /// + /// This function returns an error if there is no `Signature + /// Creation Time` subpacket in the hashed area. + pub fn preserve_signature_creation_time(mut self) + -> Result<Self> + { + self.overrode_creation_time = true; + + if self.hashed_area.lookup(SubpacketTag::SignatureCreationTime).is_none() { + Err(Error::InvalidOperation( + "Signature does not contain a Signature Creation Time subpacket".into()) + .into()) + } else { + Ok(self) + } + } + + /// Causes the builder to not output a signature creation time + /// subpacket. + /// + /// [Section 5.2.3.4 of RFC 4880] says that the `Signature + /// Creation Time` subpacket must be present in the hashed area. + /// This function clears any `Signature Creation Time` subpackets + /// from both the hashed area and the unhashed are, and causes the + /// various `SignatureBuilder` finalizers to not emit a `Signature + /// Creation Time` subpacket. This function should only be used + /// for testing purposes. + /// + /// [Section 5.2.3.4 of RFC 4880]: https://tools.ietf.org/html/rfc4880#section-5.2.3.4 + pub fn suppress_signature_creation_time(mut self) + -> Result<Self> + { + self.overrode_creation_time = true; + + self.hashed_area.remove_all(SubpacketTag::SignatureCreationTime); + self.unhashed_area.remove_all(SubpacketTag::SignatureCreationTime); + + Ok(self) + } + /// Sets the value of the Signature Expiration Time subpacket. /// /// If `None` is given, any expiration subpacket is removed. |