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|
use std::time;
use crate::Error;
use crate::Result;
use crate::Cert;
use crate::types::{HashAlgorithm, SignatureType};
use crate::crypto::Signer;
use crate::packet::{UserID, UserAttribute, key, Key, signature, Signature};
impl<P: key::KeyParts> Key<P, key::SubordinateRole> {
/// Creates a binding signature.
///
/// The signature binds this userid to `cert`. `signer` will be used
/// to create a signature using `signature` as builder.
/// The`hash_algo` defaults to SHA512, `creation_time` to the
/// current time.
///
/// This function adds a creation time subpacket, a issuer
/// fingerprint subpacket, and a issuer subpacket to the
/// signature.
///
/// # Example
///
/// This example demonstrates how to bind this key to a Cert. Note
/// that in general, the `CertBuilder` is a better way to add
/// subkeys to a Cert.
///
/// ```
/// # use sequoia_openpgp::{*, packet::prelude::*, types::*, cert::*};
/// # f().unwrap();
/// # fn f() -> Result<()> {
/// // Generate a Cert, and create a keypair from the primary key.
/// let (cert, _) = CertBuilder::new().generate()?;
/// let mut keypair = cert.primary().clone()
/// .mark_parts_secret()?.into_keypair()?;
///
/// // Let's add an encryption subkey.
/// let flags = KeyFlags::default().set_storage_encryption(true);
/// assert_eq!(cert.keys_valid().key_flags(flags.clone()).count(), 0);
///
/// // Generate a subkey and a binding signature.
/// let subkey : key::SecretSubkey
/// = Key4::generate_ecc(false, Curve::Cv25519)?.into();
/// let builder = signature::Builder::new(SignatureType::SubkeyBinding)
/// .set_key_flags(&flags)?;
/// let binding = subkey.bind(&mut keypair, &cert, builder, None)?;
///
/// // Now merge the key and binding signature into the Cert.
/// let cert = cert.merge_packets(vec![subkey.into(),
/// binding.into()])?;
///
/// // Check that we have an encryption subkey.
/// assert_eq!(cert.keys_valid().key_flags(flags).count(), 1);
/// # Ok(()) }
pub fn bind<T>(&self, signer: &mut dyn Signer, cert: &Cert,
signature: signature::Builder,
creation_time: T)
-> Result<Signature>
where T: Into<Option<time::SystemTime>>
{
signature
.set_signature_creation_time(
creation_time.into().unwrap_or_else(|| {
time::SystemTime::now()
}))?
.set_issuer_fingerprint(signer.public().fingerprint())?
.set_issuer(signer.public().keyid())?
.sign_subkey_binding(signer, cert.primary(), self)
}
}
impl UserID {
/// Creates a binding signature.
///
/// The signature binds this userid to `cert`. `signer` will be used
/// to create a signature using `signature` as builder.
/// The`hash_algo` defaults to SHA512, `creation_time` to the
/// current time.
///
/// This function adds a creation time subpacket, a issuer
/// fingerprint subpacket, and a issuer subpacket to the
/// signature.
///
/// # Example
///
/// This example demonstrates how to bind this userid to a Cert.
/// Note that in general, the `CertBuilder` is a better way to add
/// userids to a Cert.
///
/// ```
/// # use sequoia_openpgp::{*, packet::prelude::*, types::*, cert::*};
/// # f().unwrap();
/// # fn f() -> Result<()> {
/// // Generate a Cert, and create a keypair from the primary key.
/// let (cert, _) = CertBuilder::new().generate()?;
/// let mut keypair = cert.primary().clone()
/// .mark_parts_secret()?.into_keypair()?;
/// assert_eq!(cert.userids().len(), 0);
///
/// // Generate a userid and a binding signature.
/// let userid = UserID::from("test@example.org");
/// let builder =
/// signature::Builder::new(SignatureType::PositiveCertificate);
/// let binding = userid.bind(&mut keypair, &cert, builder, None)?;
///
/// // Now merge the userid and binding signature into the Cert.
/// let cert = cert.merge_packets(vec![userid.into(), binding.into()])?;
///
/// // Check that we have a userid.
/// assert_eq!(cert.userids().len(), 1);
/// # Ok(()) }
pub fn bind<T>(&self, signer: &mut dyn Signer, cert: &Cert,
signature: signature::Builder,
creation_time: T)
-> Result<Signature>
where T: Into<Option<time::SystemTime>>
{
signature
.set_signature_creation_time(
creation_time.into().unwrap_or_else(|| {
time::SystemTime::now()
}))?
.set_issuer_fingerprint(signer.public().fingerprint())?
.set_issuer(signer.public().keyid())?
.sign_userid_binding(
signer, cert.primary(), self)
}
/// Returns a certificate for the user id.
///
/// The signature binds this userid to `cert`. `signer` will be
/// used to create a certification signature of type
/// `signature_type`. `signature_type` defaults to
/// `SignatureType::GenericCertificate`, `hash_algo` to SHA512,
/// `creation_time` to the current time.
///
/// This function adds a creation time subpacket, a issuer
/// fingerprint subpacket, and a issuer subpacket to the
/// signature.
///
/// # Errors
///
/// Returns `Error::InvalidArgument` if `signature_type` is not
/// one of `SignatureType::{Generic, Persona, Casual,
/// Positive}Certificate`
///
/// # Example
///
/// This example demonstrates how to certify a userid.
///
/// ```
/// # use sequoia_openpgp::{*, packet::prelude::*, types::*, cert::*};
/// # f().unwrap();
/// # fn f() -> Result<()> {
/// // Generate a Cert, and create a keypair from the primary key.
/// let (alice, _) = CertBuilder::new()
/// .primary_keyflags(KeyFlags::default().set_certification(true))
/// .add_userid("alice@example.org")
/// .generate()?;
/// let mut keypair = alice.primary().clone()
/// .mark_parts_secret()?.into_keypair()?;
///
/// // Generate a Cert for Bob.
/// let (bob, _) = CertBuilder::new()
/// .primary_keyflags(KeyFlags::default().set_certification(true))
/// .add_userid("bob@example.org")
/// .generate()?;
///
/// // Alice now certifies the binding between `bob@example.org` and `bob`.
/// let certificate =
/// bob.userids().nth(0).unwrap().userid()
/// .certify(&mut keypair, &bob, SignatureType::PositiveCertificate,
/// None, None)?;
///
/// // `certificate` can now be used, e.g. by merging it into `bob`.
/// let bob = bob.merge_packets(vec![certificate.into()])?;
///
/// // Check that we have a certification on the userid.
/// assert_eq!(bob.userids().nth(0).unwrap().certifications().len(), 1);
/// # Ok(()) }
pub fn certify<S, H, T>(&self, signer: &mut dyn Signer, cert: &Cert,
signature_type: S,
hash_algo: H, creation_time: T)
-> Result<Signature>
where S: Into<Option<SignatureType>>,
H: Into<Option<HashAlgorithm>>,
T: Into<Option<time::SystemTime>>
{
let typ = signature_type.into();
let typ = match typ {
Some(SignatureType::GenericCertificate)
| Some(SignatureType::PersonaCertificate)
| Some(SignatureType::CasualCertificate)
| Some(SignatureType::PositiveCertificate) => typ.unwrap(),
Some(t) => return Err(Error::InvalidArgument(
format!("Invalid signature type: {}", t)).into()),
None => SignatureType::GenericCertificate,
};
let mut sig = signature::Builder::new(typ);
if let Some(algo) = hash_algo.into() {
sig = sig.set_hash_algo(algo);
}
self.bind(signer, cert, sig,
// Unwrap arguments to prevent further
// monomorphization of bind().
creation_time.into().unwrap_or_else(|| {
time::SystemTime::now()
}))
}
}
impl UserAttribute {
/// Creates a binding signature.
///
/// The signature binds this user attribute to `cert`. `signer`
/// will be used to create a signature using `signature` as
/// builder. The`hash_algo` defaults to SHA512, `creation_time`
/// to the current time.
///
/// This function adds a creation time subpacket, a issuer
/// fingerprint subpacket, and a issuer subpacket to the
/// signature.
///
/// # Example
///
/// This example demonstrates how to bind this user attribute to a
/// Cert. Note that in general, the `CertBuilder` is a better way
/// to add userids to a Cert.
///
/// ```
/// # use sequoia_openpgp::{*, packet::prelude::*, types::*, cert::*,
/// packet::user_attribute::*};
/// # f().unwrap();
/// # fn f() -> Result<()> {
/// // Generate a Cert, and create a keypair from the primary key.
/// let (cert, _) = CertBuilder::new()
/// .generate()?;
/// let mut keypair = cert.primary().clone()
/// .mark_parts_secret()?.into_keypair()?;
/// assert_eq!(cert.userids().len(), 0);
///
/// // Generate a user attribute and a binding signature.
/// let user_attr = UserAttribute::new(&[
/// Subpacket::Image(
/// Image::Private(100, vec![0, 1, 2].into_boxed_slice())),
/// ])?;
/// let builder =
/// signature::Builder::new(SignatureType::PositiveCertificate);
/// let binding = user_attr.bind(&mut keypair, &cert, builder, None)?;
///
/// // Now merge the user attribute and binding signature
|