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Omit revocation information for short-lived certificates #7679

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Omit revocation information for short-lived certificates #7679

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b7e8b2c
Add OmitShortLivedRevocation feature flag
aarongable Aug 26, 2024
00232e6
Omit OCSP from short-lived certs when flag enabled
aarongable Aug 26, 2024
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7 changes: 7 additions & 0 deletions features/features.go
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Original file line number Diff line number Diff line change
Expand Up @@ -117,6 +117,13 @@ type Config struct {
// to be the authoritative source of rate limiting information for
// new-account callers and disables the legacy rate limiting checks.
UseKvLimitsForNewAccount bool

// OmitShortLivedRevocation causes the AIA OCSP URL and/or the CRLDP URL to be
// omitted from certificates whose validity period is less than or equal to 7
// days. This validity period is the threshold to qualify as a "Short-Lived
// Certificate" per the BRs Section 1.6.1, and therefore to not require
// revocation information per the BRs Sections 4.9.1.1 and 7.1.2.11.2.
OmitShortLivedRevocation bool
}

var fMu = new(sync.RWMutex)
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7 changes: 7 additions & 0 deletions issuance/cert.go
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Expand Up @@ -23,6 +23,7 @@ import (

"github.com/letsencrypt/boulder/cmd"
"github.com/letsencrypt/boulder/config"
"github.com/letsencrypt/boulder/features"
"github.com/letsencrypt/boulder/linter"
"github.com/letsencrypt/boulder/precert"
)
Expand Down Expand Up @@ -324,6 +325,12 @@ func (i *Issuer) Prepare(prof *Profile, req *IssuanceRequest) ([]byte, *issuance
}
template.DNSNames = req.DNSNames

// Remove revocation information if the certificate is short-lived and the
// feature flag to do so is enabled.
if features.Get().OmitShortLivedRevocation && template.NotAfter.Before(template.NotBefore.Add(24*7*time.Hour)) {
template.OCSPServer = nil
}

switch req.PublicKey.(type) {
case *rsa.PublicKey:
if prof.omitKeyEncipherment {
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4 changes: 3 additions & 1 deletion test/config-next/ca.json
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Expand Up @@ -152,7 +152,9 @@
"ocspLogMaxLength": 4000,
"ocspLogPeriod": "500ms",
"ctLogListFile": "test/ct-test-srv/log_list.json",
"features": {}
"features": {
"OmitShortLivedRevocation": true
}
},
"pa": {
"challenges": {
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