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Struct sequoia_openpgp::cert::amalgamation::ValidComponentAmalgamation

source · [−]
pub struct ValidComponentAmalgamation<'a, C> { /* private fields */ }
Expand description

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

Returns the userid’s attested third-party certifications.

This feature is experimental.

Allows the certificate owner to attest to third party certifications. See Section 5.2.3.30 of RFC 4880bis for details. This can be used to address certificate flooding concerns.

This method only returns signatures that are valid under the current policy and are attested by the certificate holder.

Returns set of active attestation key signatures.

This feature is experimental.

Returns the set of signatures with the newest valid signature creation time. Older signatures are not returned. The sum of all digests in these signatures are the set of attested third-party certifications.

This interface is useful for pruning old attestation key signatures when filtering a certificate.

Note: This is a low-level interface. Consider using ValidUserIDAmalgamation::attested_certifications to iterate over all attested certifications.

Attests to third-party certifications.

This feature is experimental.

Allows the certificate owner to attest to third party certifications. See Section 5.2.3.30 of RFC 4880bis for details. This can be used to address certificate flooding concerns.

Examples
let (alice, _) = CertBuilder::new()
    .add_userid("alice@example.org")
    .generate()?;
let mut alice_signer =
    alice.primary_key().key().clone().parts_into_secret()?
    .into_keypair()?;

let (bob, _) = CertBuilder::new()
    .add_userid("bob@example.org")
    .generate()?;
let mut bob_signer =
    bob.primary_key().key().clone().parts_into_secret()?
    .into_keypair()?;
let bob_pristine = bob.clone();

// Have Alice certify the binding between "bob@example.org" and
// Bob's key.
let alice_certifies_bob
    = bob.userids().next().unwrap().userid().bind(
        &mut alice_signer, &bob,
        SignatureBuilder::new(SignatureType::GenericCertification))?;
let bob = bob.insert_packets(vec![alice_certifies_bob.clone()])?;

// Have Bob attest that certification.
let bobs_uid = bob.userids().next().unwrap();
let attestations =
    bobs_uid.attest_certifications(
        policy,
        &mut bob_signer,
        bobs_uid.certifications())?;
let bob = bob.insert_packets(attestations)?;

assert_eq!(bob.bad_signatures().count(), 0);
assert_eq!(bob.userids().next().unwrap().certifications().next(),
           Some(&alice_certifies_bob));

Returns the user attributes’s attested third-party certifications.

This feature is experimental.

Allows the certificate owner to attest to third party certifications. See Section 5.2.3.30 of RFC 4880bis for details. This can be used to address certificate flooding concerns.

This method only returns signatures that are valid under the current policy and are attested by the certificate holder.

Returns set of active attestation key signatures.

This feature is experimental.

Returns the set of signatures with the newest valid signature creation time. Older signatures are not returned. The sum of all digests in these signatures are the set of attested third-party certifications.

This interface is useful for pruning old attestation key signatures when filtering a certificate.

Note: This is a low-level interface. Consider using ValidUserAttributeAmalgamation::attested_certifications to iterate over all attested certifications.

Attests to third-party certifications.

This feature is experimental.

Allows the certificate owner to attest to third party certifications. See Section 5.2.3.30 of RFC 4880bis for details. This can be used to address certificate flooding concerns.

Examples

See ValidUserIDAmalgamation::attest_certifications#examples.

The component’s self-signatures.

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

The component’s third-party certifications.

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

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

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

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

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

Returns all of the component’s signatures.

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

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

Changes the key’s parts tag to PublicParts.

Changes the key’s parts tag to SecretParts.

Changes the key’s parts tag to UnspecifiedParts.

Changes the key’s role tag to PrimaryRole.

Changes the key’s role tag to SubordinateRole.

Changes the key’s role tag to UnspecifiedRole.

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));
}

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<_>>>();

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.

The component’s self-signatures.

The component’s third-party certifications.

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

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

Returns all of the component’s signatures.

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.

Attests to third-party certifications.

This feature is experimental.

Allows the certificate owner to attest to third party certifications. See Section 5.2.3.30 of RFC 4880bis for details. This can be used to address certificate flooding concerns.

A policy is needed, because the expiration is updated by updating the current binding signatures.

Examples
let (alice, _) = CertBuilder::new()
    .add_userid("alice@example.org")
    .generate()?;
let mut alice_signer =
    alice.primary_key().key().clone().parts_into_secret()?
    .into_keypair()?;

let (bob, _) = CertBuilder::new()
    .add_userid("bob@example.org")
    .generate()?;
let mut bob_signer =
    bob.primary_key().key().clone().parts_into_secret()?
    .into_keypair()?;
let bob_pristine = bob.clone();

// Have Alice certify the binding between "bob@example.org" and
// Bob's key.
let alice_certifies_bob
    = bob.userids().next().unwrap().userid().bind(
        &mut alice_signer, &bob,
        SignatureBuilder::new(SignatureType::GenericCertification))?;
let bob = bob.insert_packets(vec![alice_certifies_bob.clone()])?;

// Have Bob attest that certification.
let bobs_uid = bob.userids().next().unwrap();
let attestations =
    bobs_uid.attest_certifications(
        policy,
        &mut bob_signer,
        bobs_uid.certifications())?;
let bob = bob.insert_packets(attestations)?;

assert_eq!(bob.bad_signatures().count(), 0);
assert_eq!(bob.userids().next().unwrap().certifications().next(),
           Some(&alice_certifies_bob));

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.

Attests to third-party certifications.

This feature is experimental.

Allows the certificate owner to attest to third party certifications. See Section 5.2.3.30 of RFC 4880bis for details. This can be used to address certificate flooding concerns.

A policy is needed, because the expiration is updated by updating the current binding signatures.

Examples

See UserIDAmalgamation::attest_certifications#examples.

Methods from Deref<Target = ComponentBundle<C>>

Changes the key’s parts tag to PublicParts.

Changes the key’s parts tag to SecretParts.

Changes the key’s parts tag to UnspecifiedParts.

Changes the key’s role tag to PrimaryRole.

Changes the key’s role tag to SubordinateRole.

Changes the key’s role tag to UnspecifiedRole.

Returns a reference to the bundle’s component.

Examples
// Display some information about any unknown components.
for u in cert.unknowns() {
    eprintln!(" - {:?}", u.component());
}

Returns the active binding signature at time t.

The active binding signature is the most recent, non-revoked self-signature that is valid according to the policy and alive at time t (creation time <= t, t < expiry). If there are multiple such signatures then the signatures are ordered by their MPIs interpreted as byte strings.

Examples
use openpgp::policy::StandardPolicy;
let p = &StandardPolicy::new();

// Display information about each User ID's current active
// binding signature (the `time` parameter is `None`), if any.
for ua in cert.userids() {
    eprintln!("{:?}", ua.binding_signature(p, None));
}

Returns the component’s self-signatures.

The signatures are validated, and they are sorted by their creation time, most recent first.

Examples
use openpgp::policy::StandardPolicy;
let p = &StandardPolicy::new();

for (i, ka) in cert.keys().enumerate() {
    eprintln!("Key #{} ({}) has {:?} self signatures",
              i, ka.fingerprint(),
              ka.bundle().self_signatures().len());
}

Returns the component’s third-party certifications.

The signatures are not validated. They are sorted by their creation time, most recent first.

Examples
use openpgp::policy::StandardPolicy;
let p = &StandardPolicy::new();

for ua in cert.userids() {
    eprintln!("User ID {} has {:?} unverified, third-party certifications",
              String::from_utf8_lossy(ua.userid().value()),
              ua.bundle().certifications().len());
}

Returns the component’s revocations that were issued by the certificate holder.

The revocations are validated, and they are sorted by their creation time, most recent first.

Examples
use openpgp::policy::StandardPolicy;
let p = &StandardPolicy::new();

for u in cert.userids() {
    eprintln!("User ID {} has {:?} revocation certificates.",
              String::from_utf8_lossy(u.userid().value()),
              u.bundle().self_revocations().len());
}

Returns the component’s revocations that were issued by other certificates.

The revocations are not validated. They are sorted by their creation time, most recent first.

Examples
use openpgp::policy::StandardPolicy;
let p = &StandardPolicy::new();

for u in cert.userids() {
    eprintln!("User ID {} has {:?} unverified, third-party revocation certificates.",
              String::from_utf8_lossy(u.userid().value()),
              u.bundle().other_revocations().len());
}

Returns all of the component’s Attestation Key Signatures.

This feature is experimental.

The signatures are validated, and they are sorted by their creation time, most recent first.

A certificate owner can use Attestation Key Signatures to attest to third party certifications. Currently, only userid and user attribute certifications can be attested. See Section 5.2.3.30 of RFC 4880bis for details.

Examples
use openpgp::policy::StandardPolicy;
let p = &StandardPolicy::new();

for (i, uid) in cert.userids().enumerate() {
    eprintln!("UserID #{} ({:?}) has {:?} attestation key signatures",
              i, uid.email(),
              uid.attestations().count());
}

Returns all of the component’s signatures.

Only the self-signatures are validated. The signatures are sorted first by type, then by creation time. The self revocations come first, then the self signatures, then any key attestation signatures, certifications, and third-party revocations coming last. This function may return additional types of signatures that could be associated to this component.

Examples
use openpgp::policy::StandardPolicy;
let p = &StandardPolicy::new();

for (i, ka) in cert.keys().enumerate() {
    eprintln!("Key #{} ({}) has {:?} signatures",
              i, ka.fingerprint(),
              ka.signatures().count());
}

Returns a reference to the key.

This is just a type-specific alias for ComponentBundle::component.

Examples
// Display some information about the keys.
for ka in cert.keys() {
    eprintln!(" - {:?}", ka.key());
}

Returns the subkey’s revocation status at time t.

A subkey is revoked at time t if:

  • There is a live revocation at time t that is newer than all live self signatures at time t, or

  • There is a hard revocation (even if it is not live at time t, and even if there is a newer self-signature).

Note: Certs and subkeys have different criteria from User IDs and User Attributes.

Note: this only returns whether this subkey is revoked; it does not imply anything about the Cert or other components.

Examples
use openpgp::policy::StandardPolicy;
let p = &StandardPolicy::new();

// Display the subkeys' revocation status.
for ka in cert.keys().subkeys() {
    eprintln!(" Revocation status of {}: {:?}",
              ka.fingerprint(), ka.revocation_status(p, None));
}

Returns a reference to the User ID.

This is just a type-specific alias for ComponentBundle::component.

Examples
// Display some information about the User IDs.
for ua in cert.userids() {
    eprintln!(" - {:?}", ua.userid());
}

Returns the User ID’s revocation status at time t.

A User ID is revoked at time t if:

  • There is a live revocation at time t that is newer than all live self signatures at time t.

Note: Certs and subkeys have different criteria from User IDs and User Attributes.

Note: this only returns whether this User ID is revoked; it does not imply anything about the Cert or other components.

Examples
use openpgp::policy::StandardPolicy;
let p = &StandardPolicy::new();

// Display the User IDs' revocation status.
for ua in cert.userids() {
    eprintln!(" Revocation status of {}: {:?}",
              String::from_utf8_lossy(ua.userid().value()),
              ua.revocation_status(p, None));
}

Returns a reference to the User Attribute.

This is just a type-specific alias for ComponentBundle::component.

Examples
// Display some information about the User Attributes
for ua in cert.user_attributes() {
    eprintln!(" - {:?}", ua.user_attribute());
}

Returns the User Attribute’s revocation status at time t.

A User Attribute is revoked at time t if:

  • There is a live revocation at time t that is newer than all live self signatures at time t.

Note: Certs and subkeys have different criteria from User IDs and User Attributes.

Note: this only returns whether this User Attribute is revoked; it does not imply anything about the Cert or other components.

Examples
use openpgp::policy::StandardPolicy;
let p = &StandardPolicy::new();

// Display the User Attributes' revocation status.
for (i, ua) in cert.user_attributes().enumerate() {
    eprintln!(" Revocation status of User Attribute #{}: {:?}",
              i, ua.revocation_status(p, None));
}

Returns a reference to the unknown component.

This is just a type-specific alias for ComponentBundle::component.

Examples
// Display some information about the User Attributes
for u in cert.unknowns() {
    eprintln!(" - {:?}", u.unknown());
}

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

The resulting type after dereferencing.

Dereferences the value.

Converts to this type from the input type.

Returns the supported symmetric algorithms ordered by preference. Read more

Returns the supported hash algorithms ordered by preference. Read more

Returns the supported compression algorithms ordered by preference. Read more

👎 Deprecated

Returns the supported AEAD algorithms ordered by preference. Read more

Returns the certificate holder’s keyserver preferences.

Returns the certificate holder’s preferred keyserver for updates. Read more

Returns the URI of a document describing the policy the certificate was issued under. Read more

Returns the certificate holder’s feature set.

Returns the valid amalgamation’s associated certificate. Read more

Returns the amalgamation’s reference time. Read more

Returns the amalgamation’s policy. Read more

Returns the component’s binding signature as of the reference time. Read more

Returns the component’s revocation status as of the amalgamation’s reference time. Read more

Returns a list of any designated revokers for this component. Read more

Maps the given function over binding and direct key signature. Read more

Returns the certificate’s direct key signature as of the reference time, if any. Read more

The type returned by with_policy. Read more

Uses the specified Policy and reference time with the amalgamation. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

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fn __clone_box(&self, Private) -> *mut ()

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Should always be Self

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.