Sample DER certificate for testing parsers, free and CC0
der/self-signed-ed25519-cert.der is a sample DER file: a self-signed Ed25519 X.509
certificate for fixture.example with no private key, free to hotlink or download.
https://loremfile.dev/der/self-signed-ed25519-cert.der · 359 B · application/pkix-cert
DER is the binary encoding of an X.509 certificate: the form a parser actually meets inside a TLS handshake, a Java keystore or a certificate store, as opposed to the base64 text that gets pasted into configuration files.
der/self-signed-ed25519-cert.der is a self-signed Ed25519 certificate for the reserved name
fixture.example, valid from 2020 to 2120 with a fixed serial number. It is byte for byte the
same certificate as the PEM fixture, just without the armour, so you can use the pair to test
that your code converts between the two encodings correctly.
The key is derived from a published seed, which means anyone can rebuild the certificate and confirm it is what it claims to be. No private key is published, and the certificate names only a reserved example domain, so it cannot be mistaken for a credential for a real host.
Use it to test certificate parsers, keystore importers and anything that has to detect the encoding it was handed. Related format: PEM.
| File | Size | Properties | Description |
|---|---|---|---|
self-signed-ed25519-cert.der
|
359 B | The self-signed Ed25519 certificate for fixture.example in binary DER encoding, byte for byte the same certificate as the PEM fixture.
Snippets |
Every DER file in one command, each checked against its hash: npx loremfile get --format der, or loremfile get --format der after pip install loremfile.
Related formats
File names follow the naming grammar. Verify a download against sha256sums.txt.