A-Trust-Root-07

Check whether your device trusts it

Each platform keeps its own root store. The commands below look up A-Trust-Root-07 by common name (A-Trust-Root-07) 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 The store status in each heading comes from the CCADB snapshot; your device can differ if it is out of date or managed by an administrator.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: Not included)

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 "A-Trust-Root-07" -Z \
  /System/Library/Keychains/SystemRootCertificates.keychain | grep "SHA-256"
# SHA-256 hash: 8AC552AD577E37AD2C6808D72AA331D6A96B4B3FEBFF34CE9BC0578E08055EC3

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 1B1815AF925D140EFC5AF9A1AA55EEBB4FFBC561

Linux (ca-certificates follows Mozilla: Not included)

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 "A-Trust-Root-07"
# Debian / Ubuntu (ca-certificates)
openssl crl2pkcs7 -nocrl -certfile /etc/ssl/certs/ca-certificates.crt \
  | openssl pkcs7 -print_certs -noout | grep -iF "A-Trust-Root-07"

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 "8A:C5:52:AD:57:7E:37:AD:2C:68:08:D7:2A:A3:31:D6:A9:6B:4B:3F:EB:FF:34:CE:9B:C0:57:8E:08:05:5E:C3"

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 A-Trust Ges. f. Sicherheitssysteme im elektr. Datenverkehr GmbH → A-Trust-Root-07.

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 a-trust-root-07.pem -noout -subject -fingerprint -sha256
# sha256 Fingerprint=8A:C5:52:AD:57:7E:37:AD:2C:68:08:D7:2A:A3:31:D6:A9:6B:4B:3F:EB:FF:34:CE:9B:C0:57:8E:08:05:5E:C3