Root certificate · Kamu SM (Turkey)

TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1

TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1 is a root CA certificate operated by Kamu SM (Turkey) (RSA 2048, valid until 2043-10-25, SHA-256 46EDC368). As of the latest CCADB data it is trusted for TLS server authentication by 4 of 4 major root stores: Chrome, Mozilla, Apple, Microsoft.

Data updated

Root store status

Root storeStatusTrusted for TLSDistrust for TLS afterConstrained
ChromeIncluded IncludedYes—No
MozillaIncluded IncludedYes—Yes
AppleIncluded IncludedYes—Yes
MicrosoftIncluded IncludedYes—No

The CCADB lists no EV policy OID for TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1.

Included Chrome

Status
Included

Included Mozilla

Status
Included
Trust bits
Websites
EV policy OIDs
not EV-enabled
Applied constraints
*.tr
First included in
NSS 3.30.2 / Firefox 54
Inclusion bug
#1262809

Included Apple

Status
Included
Trust bits
serverAuth, clientAuth
Allowed policies
Server Authentication, Client Authentication, Code Signing, Timestamp Signing

Included Microsoft

Status
Included
Trusted EKUs
Server Authentication, Client Authentication

"Trusted for TLS" means the store includes the root with the server-authentication trust bit (Mozilla "Websites", Apple serverAuth, Microsoft Server Authentication EKU). Microsoft "NotBefore" means only certificates issued before a cutoff date are still trusted. "Constrained" means the store applies extra restrictions.

Details

CA owner
Government of Turkey, Kamu Sertifikasyon Merkezi (Kamu SM)
Subject
CN=TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1,OU=Kamu Sertifikasyon Merkezi - Kamu SM,O=Turkiye Bilimsel ve Teknolojik Arastirma Kurumu - TUBITAK,L=Gebze - Kocaeli,C=TR
SHA-256
46EDC3689046D53A453FB3104AB80DCAEC658B2660EA1629DD7E867990648716
SHA-1 (Windows thumbprint)
3143649BECCE27ECED3A3F0B8F0DE4E891DDEECA
SPKI SHA-256
55E00BE277CEB0545299F24FD9F877E2ACF32852DB43FFCD29BCA74B39B4C9FA
Valid from
2013-11-25
Expires
2043-10-25
Key
RSA 2048
Signature algorithm
sha256WithRSAEncryption
Serial number
1
Country
TR
Trust bits (CCADB)
Server Authentication, Client Authentication
EV policy OIDs (CCADB)
not EV-enabled · TLS EV capable: No
Test websites
valid: https://testssl.kamusm.gov.tr/ · expired: https://testsslexpired.kamusm.gov.tr/ · revoked: https://testsslrevoked.kamusm.gov.tr/
CCADB record
A002592
PEM
kamu-sm-tubitak-kamu-sm-ssl-kok-sertifikasi-surum-1.pem

Look up this certificate on crt.sh

Intermediate CAs issued by this root

The CCADB lists 3 intermediate CA certificates signed directly by TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1: 2 currently valid, 1 expired and 0 revoked (revoked includes those whose parent was revoked).

Showing 3 of 3: valid certificates first, newest first. Each name links to its crt.sh entry by SHA-256; an arrow marks a cross-certificate for another root on this site.

IntermediateOperated byExpiresStatus
TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 2 Government of Turkey, Kamu Sertifikasyon Merkezi (Kamu SM)2040-06-12Valid
TUBITAK Kamu SM SSL Sertifika Hizmet Saglayicisi - Surum 2 Government of Turkey, Kamu Sertifikasyon Merkezi (Kamu SM)2027-04-25Valid
TUBITAK Kamu SM SSL Sertifika Hizmet Saglayicisi - Surum 1 Government of Turkey, Kamu Sertifikasyon Merkezi (Kamu SM)2025-05-11Expired

Cross-signed versions

No certificate in the CCADB has the same subject and public key as TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1 with a different issuer, so a client has to carry TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1 itself in its root store to trust it.

CRL and OCSP addresses

In the root certificate

TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1 itself contains no CRL Distribution Points and no OCSP (Authority Information Access) extension. That is normal for a root: clients trust it directly and do not check its own revocation status.

Full CRL this CA publishes (CCADB)

  • http://depo.kamusm.gov.tr/ssl/SSLKOKSIL.S1.crl

Used by the intermediates it issued

Addresses found in the CRL Distribution Points and OCSP fields of the 2 valid intermediates signed by TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1; the number in brackets is how many of them use each address.

  • CRL: http://depo.kamusm.gov.tr/ssl/SSLKOKSIL.S1.crl (2)
  • OCSP: http://ocspsslkoks1.kamusm.gov.tr (2)

What happens when it expires

TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1 is valid until 2043-10-25, about 17.0 years after this data snapshot (2026-11-10). From that day, browsers and operating systems that check trust-anchor expiry stop accepting chains that end at this root, so any certificate that can only chain to it fails validation. Android is a known exception: it does not enforce the expiry date of trust anchors.

Check whether your device trusts it

Each platform keeps its own root store. The commands below look up TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1 by common name (TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1) or fingerprint. The store status in each heading comes from the CCADB snapshot; your device can differ if it is out of date or managed by an administrator.

macOS (Apple store: Included · Trusted for TLS)

Search the system roots keychain by common name. -Z prints the SHA-256 hash, which must match the fingerprint on the last line.

security find-certificate -a -c "TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1" -Z \
  /System/Library/Keychains/SystemRootCertificates.keychain | grep "SHA-256"
# SHA-256 hash: 46EDC3689046D53A453FB3104AB80DCAEC658B2660EA1629DD7E867990648716

Windows (Microsoft store: Included · Trusted for TLS)

Windows identifies roots by SHA-1 thumbprint. It installs third-party roots on demand through Automatic Root Certificates Update, so "not found" can also mean the root has not been needed yet; certutil -generateSSTFromWU roots.sst downloads Microsoft's full list.

certutil -verifystore Root 3143649BECCE27ECED3A3F0B8F0DE4E891DDEECA

Linux (ca-certificates follows Mozilla: Included · Trusted for TLS)

Debian, Ubuntu, Fedora and RHEL build their ca-certificates package from Mozilla's root store. Use trust list on p11-kit systems, or search the PEM bundle on Debian and Ubuntu.

# Fedora / RHEL / Arch (p11-kit)
trust list --filter=ca-anchors | grep -iF -A2 "TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1"
# Debian / Ubuntu (ca-certificates)
openssl crl2pkcs7 -nocrl -certfile /etc/ssl/certs/ca-certificates.crt \
  | openssl pkcs7 -print_certs -noout | grep -iF "TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1"

Java

Java ships its own cacerts keystore; JDK 9 and later accept -cacerts and the default store password is changeit. Search for the SHA-256 fingerprint in colon form.

keytool -list -cacerts -storepass changeit | grep -i "46:ED:C3:68:90:46:D5:3A:45:3F:B3:10:4A:B8:0D:CA:EC:65:8B:26:60:EA:16:29:DD:7E:86:79:90:64:87:16"

Android

Android's system store is maintained by Google separately from the four CCADB stores above. Open Settings → Security & privacy → More security settings → Encryption & credentials → Trusted credentials → System (menu names vary by vendor and version) and look for Turkiye Bilimsel ve Teknolojik Arastirma Kurumu - TUBITAK → TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1.

Which root does my site chain to?

List the chain your server sends and compare the last issuer with this root; the fingerprint check confirms a local copy.

Download PEM

# show subject (s:) and issuer (i:) of every certificate the server sends
openssl s_client -connect example.com:443 -servername example.com -showcerts </dev/null 2>/dev/null \
  | grep -E '^ *[0-9]+ s:|^ *i:'
# subject and SHA-256 fingerprint of the downloaded PEM file
openssl x509 -in kamu-sm-tubitak-kamu-sm-ssl-kok-sertifikasi-surum-1.pem -noout -subject -fingerprint -sha256
# sha256 Fingerprint=46:ED:C3:68:90:46:D5:3A:45:3F:B3:10:4A:B8:0D:CA:EC:65:8B:26:60:EA:16:29:DD:7E:86:79:90:64:87:16

FAQ

Is TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1 trusted by Chrome, Firefox, Safari and Windows?

Yes. As of 2026-11-10, Chrome, Mozilla (Firefox), Apple (Safari) and Microsoft (Windows) all trust it for TLS server authentication.

When does TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1 expire?

On 2043-10-25, about 17.0 years after the 2026-11-10 data snapshot.

How many intermediate certificates has TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1 issued?

The CCADB lists 3: 2 valid, 1 expired and 0 revoked. The newest valid one is TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 2, valid until 2040-06-12.

Is TUBITAK Kamu SM SSL Kok Sertifikasi - Surum 1 cross-signed?

No. The CCADB has no certificate with the same subject and public key signed by another CA.

Sources

  1. CCADB — Resources (TLS Server Authentication report, All Included Root Certificate Trust Bit Settings)
  2. CCADB — All Certificate Information (root and intermediate), CSV V5
  3. CCADB — Mozilla Included CA Certificate Report
  4. CCADB — Chrome / Mozilla / Apple / Microsoft TLS Server Authentication CSV