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s390-tools/s390-tools-sles15sp5-01-rust-pv-support-Armonk-in-IBM-signing-key-subject.patch

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Index: s390-tools-service/rust/pv/src/verify.rs
===================================================================
--- s390-tools-service.orig/rust/pv/src/verify.rs
+++ s390-tools-service/rust/pv/src/verify.rs
@@ -3,10 +3,11 @@
// Copyright IBM Corp. 2023
use core::slice;
-use log::debug;
+use log::{debug, trace};
+use openssl::error::ErrorStack;
use openssl::stack::Stack;
use openssl::x509::store::X509Store;
-use openssl::x509::{CrlStatus, X509Ref, X509StoreContext, X509};
+use openssl::x509::{CrlStatus, X509NameRef, X509Ref, X509StoreContext, X509StoreContextRef, X509};
use openssl_extensions::crl::StackableX509Crl;
use openssl_extensions::crl::X509StoreContextExtension;
@@ -82,8 +83,8 @@ impl HkdVerifier for CertVerifier {
if verified_crls.is_empty() {
bail_hkd_verify!(NoCrl);
}
- for crl in &verified_crls {
- match crl.get_by_cert(&hkd.to_owned()) {
+ for crl in verified_crls {
+ match crl.get_by_serial(hkd.serial_number()) {
CrlStatus::NotRevoked => (),
_ => bail_hkd_verify!(HdkRevoked),
}
@@ -94,21 +95,54 @@ impl HkdVerifier for CertVerifier {
}
impl CertVerifier {
+ fn quirk_crls(
+ ctx: &mut X509StoreContextRef,
+ subject: &X509NameRef,
+ ) -> Result<Stack<StackableX509Crl>, ErrorStack> {
+ match ctx.crls(subject) {
+ Ok(ret) if !ret.is_empty() => return Ok(ret),
+ _ => (),
+ }
+
+ // Armonk/Poughkeepsie fixup
+ trace!("quirk_crls: Try Locality");
+ if let Some(locality_subject) = helper::armonk_locality_fixup(subject) {
+ match ctx.crls(&locality_subject) {
+ Ok(ret) if !ret.is_empty() => return Ok(ret),
+ _ => (),
+ }
+
+ // reorder
+ trace!("quirk_crls: Try Locality+Reorder");
+ if let Ok(locality_ordered_subject) = helper::reorder_x509_names(&locality_subject) {
+ match ctx.crls(&locality_ordered_subject) {
+ Ok(ret) if !ret.is_empty() => return Ok(ret),
+ _ => (),
+ }
+ }
+ }
+
+ // reorder unchanged loaciliy subject
+ trace!("quirk_crls: Try Reorder");
+ if let Ok(ordered_subject) = helper::reorder_x509_names(subject) {
+ match ctx.crls(&ordered_subject) {
+ Ok(ret) if !ret.is_empty() => return Ok(ret),
+ _ => (),
+ }
+ }
+ // nothing found, return empty stack
+ Stack::new()
+ }
+
///Download the CLRs that a HKD refers to.
pub fn hkd_crls(&self, hkd: &X509Ref) -> Result<Stack<StackableX509Crl>> {
let mut ctx = X509StoreContext::new()?;
// Unfortunately we cannot use a dedicated function here and have to use a closure (E0434)
// Otherwise, we cannot refer to self
+ // Search for local CRLs
let mut crls = ctx.init_opt(&self.store, None, None, |ctx| {
let subject = self.ibm_z_sign_key.subject_name();
- match ctx.crls(subject) {
- Ok(crls) => Ok(crls),
- _ => {
- // reorder the name and try again
- let broken_subj = helper::reorder_x509_names(subject)?;
- ctx.crls(&broken_subj).or_else(helper::stack_err_hlp)
- }
- }
+ Self::quirk_crls(ctx, subject)
})?;
if !self.offline {
Index: s390-tools-service/rust/pv/src/verify/helper.rs
===================================================================
--- s390-tools-service.orig/rust/pv/src/verify/helper.rs
+++ s390-tools-service/rust/pv/src/verify/helper.rs
@@ -13,7 +13,7 @@ use openssl::{
error::ErrorStack,
nid::Nid,
ssl::SslFiletype,
- stack::{Stack, Stackable},
+ stack::Stack,
x509::{
store::{File, X509Lookup, X509StoreBuilder, X509StoreBuilderRef, X509StoreRef},
verify::{X509VerifyFlags, X509VerifyParam},
@@ -25,6 +25,7 @@ use openssl_extensions::{
akid::{AkidCheckResult, AkidExtension},
crl::X509StoreExtension,
};
+use std::str::from_utf8;
use std::{cmp::Ordering, ffi::c_int, time::Duration, usize};
/// Minimum security level for the keys/certificates used to establish a chain of
@@ -39,7 +40,6 @@ const SECURITY_CHAIN_MAX_LEN: c_int = 2;
/// verifies that the HKD
/// * has enough security bits
/// * is inside its validity period
-/// * issuer name is the subject name of the [`sign_key`]
/// * the Authority Key ID matches the Signing Key ID of the [`sign_key`]
pub fn verify_hkd_options(hkd: &X509Ref, sign_key: &X509Ref) -> Result<()> {
let hk_pkey = hkd.public_key()?;
@@ -53,9 +53,6 @@ pub fn verify_hkd_options(hkd: &X509Ref,
// verify that the hkd is still valid
check_validity_period(hkd.not_before(), hkd.not_after())?;
- // check if hkd.issuer_name == issuer.subject
- check_x509_name_equal(sign_key.subject_name(), hkd.issuer_name())?;
-
// verify that the AKID of the hkd matches the SKID of the issuer
if let Some(akid) = hkd.akid() {
if akid.check(sign_key) != AkidCheckResult::OK {
@@ -75,9 +72,6 @@ pub fn verify_crl(crl: &X509CrlRef, issu
return None;
}
}
-
- check_x509_name_equal(crl.issuer_name(), issuer.subject_name()).ok()?;
-
match crl.verify(issuer.public_key().ok()?.as_ref()).ok()? {
true => Some(()),
false => None,
@@ -207,7 +201,8 @@ pub fn download_crls_into_store(store: &
//Asn1StringRef::as_slice aka ASN1_STRING_get0_data gives a string without \0 delimiter
const IBM_Z_COMMON_NAME: &[u8; 43usize] = b"International Business Machines Corporation";
const IBM_Z_COUNTRY_NAME: &[u8; 2usize] = b"US";
-const IBM_Z_LOCALITY_NAME: &[u8; 12usize] = b"Poughkeepsie";
+const IBM_Z_LOCALITY_NAME_POUGHKEEPSIE: &[u8; 12usize] = b"Poughkeepsie";
+const IBM_Z_LOCALITY_NAME_ARMONK: &[u8; 6usize] = b"Armonk";
const IBM_Z_ORGANIZATIONAL_UNIT_NAME_SUFFIX: &str = "Key Signing Service";
const IBM_Z_ORGANIZATION_NAME: &[u8; 43usize] = b"International Business Machines Corporation";
const IBM_Z_STATE: &[u8; 8usize] = b"New York";
@@ -226,7 +221,8 @@ fn is_ibm_signing_cert(cert: &X509) -> b
if subj.entries().count() != IMB_Z_ENTRY_COUNT
|| !name_data_eq(subj, Nid::COUNTRYNAME, IBM_Z_COUNTRY_NAME)
|| !name_data_eq(subj, Nid::STATEORPROVINCENAME, IBM_Z_STATE)
- || !name_data_eq(subj, Nid::LOCALITYNAME, IBM_Z_LOCALITY_NAME)
+ || !(name_data_eq(subj, Nid::LOCALITYNAME, IBM_Z_LOCALITY_NAME_POUGHKEEPSIE)
+ || name_data_eq(subj, Nid::LOCALITYNAME, IBM_Z_LOCALITY_NAME_ARMONK))
|| !name_data_eq(subj, Nid::ORGANIZATIONNAME, IBM_Z_ORGANIZATION_NAME)
|| !name_data_eq(subj, Nid::COMMONNAME, IBM_Z_COMMON_NAME)
{
@@ -367,24 +363,6 @@ fn check_validity_period(not_before: &As
}
}
-fn check_x509_name_equal(lhs: &X509NameRef, rhs: &X509NameRef) -> Result<()> {
- if lhs.entries().count() != rhs.entries().count() {
- bail_hkd_verify!(IssuerMismatch);
- }
-
- for l in lhs.entries() {
- // search for the matching value in the rhs names
- // found none? -> names are not equal
- if !rhs
- .entries()
- .any(|r| l.data().as_slice() == r.data().as_slice())
- {
- bail_hkd_verify!(IssuerMismatch);
- }
- }
- Ok(())
-}
-
const NIDS_CORRECT_ORDER: [Nid; 6] = [
Nid::COUNTRYNAME,
Nid::ORGANIZATIONNAME,
@@ -407,13 +385,28 @@ pub fn reorder_x509_names(subject: &X509
Ok(correct_subj.build())
}
-pub fn stack_err_hlp<T: Stackable>(
- e: ErrorStack,
-) -> std::result::Result<Stack<T>, openssl::error::ErrorStack> {
- match e.errors().len() {
- 0 => Stack::<T>::new(),
- _ => Err(e),
+/**
+* Workaround for potential locality mismatches between CRLs and Certs
+* # Return
+* fixed subject or none if locality was not Armonk or any OpenSSL error
+*/
+pub fn armonk_locality_fixup(subject: &X509NameRef) -> Option<X509Name> {
+ if !name_data_eq(subject, Nid::LOCALITYNAME, IBM_Z_LOCALITY_NAME_ARMONK) {
+ return None;
+ }
+
+ let mut ret = X509Name::builder().ok()?;
+ for entry in subject.entries() {
+ match entry.object().nid() {
+ nid @ Nid::LOCALITYNAME => ret
+ .append_entry_by_nid(nid, from_utf8(IBM_Z_LOCALITY_NAME_POUGHKEEPSIE).ok()?)
+ .ok()?,
+ _ => {
+ ret.append_entry(entry).ok()?;
+ }
+ }
}
+ Some(ret.build())
}
#[cfg(test)]
@@ -451,20 +444,6 @@ mod test {
));
}
- #[test]
- fn x509_name_equal() {
- let sign_crt = load_gen_cert("ibm.crt");
- let hkd = load_gen_cert("host.crt");
- let other = load_gen_cert("inter_ca.crt");
-
- assert!(super::check_x509_name_equal(sign_crt.subject_name(), hkd.issuer_name()).is_ok(),);
-
- assert!(matches!(
- super::check_x509_name_equal(other.subject_name(), hkd.subject_name()),
- Err(Error::HkdVerify(IssuerMismatch))
- ));
- }
-
#[test]
fn is_ibm_z_sign_key() {
let ibm_crt = load_gen_cert("ibm.crt");
Index: s390-tools-service/rust/pv/src/verify/test.rs
===================================================================
--- s390-tools-service.orig/rust/pv/src/verify/test.rs
+++ s390-tools-service/rust/pv/src/verify/test.rs
@@ -84,7 +84,6 @@ fn verify_online() {
let inter_crt = get_cert_asset_path_string("inter_ca.crt");
let ibm_crt = get_cert_asset_path_string("ibm.crt");
let hkd_revoked = load_gen_cert("host_rev.crt");
- let hkd_inv = load_gen_cert("host_invalid_signing_key.crt");
let hkd_exp = load_gen_cert("host_crt_expired.crt");
let hkd = load_gen_cert("host.crt");
@@ -112,11 +111,6 @@ fn verify_online() {
));
assert!(matches!(
- verifier.verify(&hkd_inv),
- Err(Error::HkdVerify(IssuerMismatch))
- ));
-
- assert!(matches!(
verifier.verify(&hkd_exp),
Err(Error::HkdVerify(AfterValidity))
));
@@ -130,7 +124,6 @@ fn verify_offline() {
let ibm_crt = get_cert_asset_path_string("ibm.crt");
let ibm_crl = get_cert_asset_path_string("ibm.crl");
let hkd_revoked = load_gen_cert("host_rev.crt");
- let hkd_inv = load_gen_cert("host_invalid_signing_key.crt");
let hkd_exp = load_gen_cert("host_crt_expired.crt");
let hkd = load_gen_cert("host.crt");
@@ -149,11 +142,6 @@ fn verify_offline() {
));
assert!(matches!(
- verifier.verify(&hkd_inv),
- Err(Error::HkdVerify(IssuerMismatch))
- ));
-
- assert!(matches!(
verifier.verify(&hkd_exp),
Err(Error::HkdVerify(AfterValidity))
));
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