[][src]Struct sequoia_openpgp::cert::amalgamation::ValidComponentAmalgamation

pub struct ValidComponentAmalgamation<'a, C> { /* fields omitted */ }

A ComponentAmalgamation plus a Policy and a reference time.

A ValidComponentAmalgamation combines a ComponentAmalgamation with a Policy and a reference time. This allows it to implement the ValidAmalgamation trait, which provides methods that require a Policy and a reference time. Although ComponentAmalgamation could implement these methods by requiring that the caller explicitly pass them in, embedding them in the ValidComponentAmalgamation helps ensure that multipart operations, even those that span multiple functions, use the same Policy and reference time.

A ValidComponentAmalgamation is typically obtained by transforming a ComponentAmalgamation using ValidateAmalgamation::with_policy. A ComponentAmalgamationIter can also be changed to yield ValidComponentAmalgamations.

A ValidComponentAmalgamation is guaranteed to come from a valid certificate, and have a valid and live binding signature at the specified reference time. Note: this only means that the binding signatures are live; it says nothing about whether the certificate is live. If you care about that, then you need to check it separately.

Examples

Print out information about all non-revoked User IDs.

use openpgp::cert::prelude::*;
use openpgp::packet::prelude::*;
use openpgp::policy::StandardPolicy;
use openpgp::types::RevocationStatus;

let p = &StandardPolicy::new();
for u in cert.userids() {
    // Create a `ValidComponentAmalgamation`.  This may fail if
    // there are no binding signatures that are accepted by the
    // policy and that are live right now.
    let u = u.with_policy(p, None)?;

    // Before using the User ID, we still need to check that it is
    // not revoked; `ComponentAmalgamation::with_policy` ensures
    // that there is a valid *binding signature*, not that the
    // `ComponentAmalgamation` is valid.
    //
    // Note: `ValidComponentAmalgamation::revocation_status` and
    // `Preferences::preferred_symmetric_algorithms` use the
    // embedded policy and timestamp.  Even though we used `None` for
    // the timestamp (i.e., now), they are guaranteed to use the same
    // timestamp, because `with_policy` eagerly transforms it into
    // the current time.
    //
    // Note: we only check whether the User ID is not revoked.  If
    // we were using a key, we'd also want to check that it is alive.
    // (Keys can expire, but User IDs cannot.)
    if let RevocationStatus::Revoked(_revs) = u.revocation_status() {
        // Revoked by the key owner.  (If we care about
        // designated revokers, then we need to check those
        // ourselves.)
    } else {
        // Print information about the User ID.
        eprintln!("{}: preferred symmetric algorithms: {:?}",
                  String::from_utf8_lossy(u.value()),
                  u.preferred_symmetric_algorithms());
    }
}

Implementations

impl<'a, C> ValidComponentAmalgamation<'a, C> where
    C: Ord + Send + Sync
[src]

pub fn self_signatures(&self) -> impl Iterator<Item = &Signature> + Send + Sync[src]

The component's self-signatures.

This method only returns signatures that are valid under the current policy.

pub fn certifications(&self) -> impl Iterator<Item = &Signature> + Send + Sync[src]

The component's third-party certifications.

This method only returns signatures that are valid under the current policy.

pub fn self_revocations(&self) -> impl Iterator<Item = &Signature> + Send + Sync[src]

The component's revocations that were issued by the certificate holder.

This method only returns signatures that are valid under the current policy.

pub fn other_revocations(
    &self
) -> impl Iterator<Item = &Signature> + Send + Sync
[src]

The component's revocations that were issued by other certificates.

This method only returns signatures that are valid under the current policy.

Methods from Deref<Target = ComponentAmalgamation<'a, C>>

pub fn parts_as_public(
    &'a self
) -> &'a ComponentAmalgamation<'a, Key<PublicParts, R>>
[src]

Changes the key's parts tag to PublicParts.

pub fn parts_as_secret(
    &'a self
) -> Result<&'a ComponentAmalgamation<'a, Key<SecretParts, R>>>
[src]

Changes the key's parts tag to SecretParts.

pub fn parts_as_unspecified(
    &'a self
) -> &ComponentAmalgamation<'a, Key<UnspecifiedParts, R>>
[src]

Changes the key's parts tag to UnspecifiedParts.

pub fn role_as_primary(
    &'a self
) -> &'a ComponentAmalgamation<'a, Key<P, PrimaryRole>>
[src]

Changes the key's role tag to PrimaryRole.

pub fn role_as_subordinate(
    &'a self
) -> &'a ComponentAmalgamation<'a, Key<P, SubordinateRole>>
[src]

Changes the key's role tag to SubordinateRole.

pub fn role_as_unspecified(
    &'a self
) -> &'a ComponentAmalgamation<'a, Key<P, UnspecifiedRole>>
[src]

Changes the key's role tag to UnspecifiedRole.

pub fn cert(&self) -> &'a Cert[src]

Returns the component's associated certificate.

for u in cert.userids() {
    // It's not only an identical `Cert`, it's the same one.
    assert!(std::ptr::eq(u.cert(), &cert));
}

pub fn bundle(&self) -> &'a ComponentBundle<C>[src]

Returns this amalgamation's bundle.

Note: although ComponentAmalgamation derefs to a &ComponentBundle, this method provides a more accurate lifetime, which is helpful when returning the reference from a function. See the module's documentation for more details.

Examples

use openpgp::cert::prelude::*;
use openpgp::packet::prelude::*;

cert.userids()
    .map(|ua| {
        // The following doesn't work:
        //
        //   let b: &ComponentBundle<_> = &ua; b
        //
        // Because ua's lifetime is this closure and autoderef
        // assigns `b` the same lifetime as `ua`.  `bundle()`,
        // however, returns a reference whose lifetime is that
        // of `cert`.
        ua.bundle()
    })
    .collect::<Vec<&ComponentBundle<_>>>();

pub fn component(&self) -> &'a C[src]

Returns this amalgamation's component.

Note: although ComponentAmalgamation derefs to a &Component (via &ComponentBundle), this method provides a more accurate lifetime, which is helpful when returning the reference from a function. See the module's documentation for more details.

pub fn self_signatures(
    &self
) -> impl Iterator<Item = &'a Signature> + Send + Sync
[src]

The component's self-signatures.

pub fn certifications(
    &self
) -> impl Iterator<Item = &'a Signature> + Send + Sync
[src]

The component's third-party certifications.

pub fn self_revocations(
    &self
) -> impl Iterator<Item = &'a Signature> + Send + Sync
[src]

The component's revocations that were issued by the certificate holder.

pub fn other_revocations(
    &self
) -> impl Iterator<Item = &'a Signature> + Send + Sync
[src]

The component's revocations that were issued by other certificates.

pub fn userid(&self) -> &'a UserID[src]

Returns a reference to the User ID.

Note: although ComponentAmalgamation<UserID> derefs to a &UserID (via &ComponentBundle), this method provides a more accurate lifetime, which is helpful when returning the reference from a function. See the module's documentation for more details.

pub fn user_attribute(&self) -> &'a UserAttribute[src]

Returns a reference to the User Attribute.

Note: although ComponentAmalgamation<UserAttribute> derefs to a &UserAttribute (via &ComponentBundle), this method provides a more accurate lifetime, which is helpful when returning the reference from a function. See the module's documentation for more details.

Trait Implementations

impl<'a, C> Clone for ValidComponentAmalgamation<'a, C>[src]

impl<'a, C: Debug> Debug for ValidComponentAmalgamation<'a, C>[src]

impl<'a, C> Deref for ValidComponentAmalgamation<'a, C>[src]

type Target = ComponentAmalgamation<'a, C>

The resulting type after dereferencing.

impl<'a, C: 'a> From<ValidComponentAmalgamation<'a, C>> for ComponentAmalgamation<'a, C>[src]

impl<'a, C> Preferences<'a> for ValidComponentAmalgamation<'a, C>[src]

impl<'a, C> ValidAmalgamation<'a, C> for ValidComponentAmalgamation<'a, C>[src]

impl<'a, C> ValidateAmalgamation<'a, C> for ValidComponentAmalgamation<'a, C>[src]

type V = Self

The type returned by with_policy. Read more

Auto Trait Implementations

impl<'a, C> !RefUnwindSafe for ValidComponentAmalgamation<'a, C>

impl<'a, C> Send for ValidComponentAmalgamation<'a, C> where
    C: Sync

impl<'a, C> Sync for ValidComponentAmalgamation<'a, C> where
    C: Sync

impl<'a, C> Unpin for ValidComponentAmalgamation<'a, C>

impl<'a, C> !UnwindSafe for ValidComponentAmalgamation<'a, C>

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
[src]

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<T> DynClone for T where
    T: Clone
[src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T> Same<T> for T

type Output = T

Should always be Self

impl<T> ToOwned for T where
    T: Clone
[src]

type Owned = T

The resulting type after obtaining ownership.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.