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ian-at-strixandIan Graham Martinez
a2e6d3f72f
schannel's revocation check, which cargo enables, fails closed on a leaf without a reachable CRL. The CA gains cRLSign, which rcgen needs to sign one, and leaves carry a distribution point when the platform serves it. Co-authored-by: Ian Graham Martinez <[email protected]>
53 lines
2.0 KiB
Rust
53 lines
2.0 KiB
Rust
use firewall::mitm;
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use rcgen::KeyPair;
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fn signer() -> KeyPair {
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KeyPair::generate().expect("generate a key")
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}
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/// The name constraint is what scopes a machine-wide trust anchor, and only if critical.
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#[test]
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fn minted_ca_is_name_constrained() {
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let hosts = ["registry.npmjs.org", "pypi.org"];
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let ca = mitm::CertificateAuthority::generate(&hosts, &signer()).expect("mint a ca");
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let der = ca.crt.to_der().expect("re-encode the certificate");
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// SEQUENCE { OID 2.5.29.30, BOOLEAN TRUE, ... }
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let critical_name_constraints = [0x06, 0x03, 0x55, 0x1d, 0x1e, 0x01, 0x01, 0xff];
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assert!(der.windows(8).any(|w| w == critical_name_constraints));
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for host in hosts {
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assert!(der.windows(host.len()).any(|w| w == host.as_bytes()), "{host} missing");
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}
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}
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/// A stored CA must survive a restart, but never be reused for a different host set.
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#[test]
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fn stored_ca_round_trips_and_rejects_a_changed_host_set() {
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let hosts = ["registry.npmjs.org", "pypi.org"];
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let signer = signer();
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let ca = mitm::CertificateAuthority::generate(&hosts, &signer);
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let blob = ca.expect("mint a ca").to_blob(&hosts);
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let restored = mitm::CertificateAuthority::from_blob(&blob, &hosts, &signer);
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assert_eq!(restored.expect("restore the ca").to_blob(&hosts), blob);
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assert!(mitm::CertificateAuthority::from_blob(&blob, &["npmjs.org"], &signer).is_none());
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}
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/// Leaves signed by a different key would not verify against the stored certificate.
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#[test]
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fn stored_ca_is_rejected_when_the_signing_key_changed() {
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let hosts = ["registry.npmjs.org", "pypi.org"];
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let ca = mitm::CertificateAuthority::generate(&hosts, &signer());
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let blob = ca.expect("mint a ca").to_blob(&hosts);
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assert!(mitm::CertificateAuthority::from_blob(&blob, &hosts, &signer()).is_none());
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}
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/// rcgen signs a CRL only for a CA with cRLSign, and schannel wants one for every leaf.
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#[test]
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fn ca_signs_an_empty_crl() {
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let crl = mitm::crl(&["registry.npmjs.org", "pypi.org"], &signer()).expect("sign a crl");
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assert_eq!(crl[0], 0x30, "a DER SEQUENCE");
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}
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