Signing
From MgmtWiki
Full Title or Meme
A signature on a digital document is designed to show that the document has not be altered and the identity of the key used to make the signature.
Solutions
- RSA signing with 3072 bit keys is good enough for TOP SECRET om 2015-08-19, but might not be included in post-quantum cryptography suites.
- See the wiki page Quantum Computing Threat for current status on post-quantum Cryptography.
- Curves Supported by OpenSSL can be discovered by keying (there will typically be many more that shown here)
openssl ecparam -list_curves
| IETF name | NIST name | W3C name | SSL | Description |
| secp256k1 | EcdsaSecp256k1Signature2019 | default | Koblitz curve 256 bit SEC | |
| secp256r1 | P-256 | EcdsaSecp256r1Signature2019 | default | random curve 256 bit SEC SUITE B |
| secp384r1 | P-384 | default | random curve 386 bit SEC SUITE B -OK for TOP SECRET | |
| secp521r1 | P-521 | default | random curve 521 bit SEC - not worth the extra work | |
| Ed25519Signature2018 | ||||
| sect283r1 | Weierstrass curve 283-bit | |||
| brainpoolP256r1 | default | |||
| brainpoolP384r1 | default | |||
| brainpoolP521r1 | default | |||
| brainpoolP256t1 |
References
- Standards for Efficient Cryptography SEC 2: Recommended Elliptic Curve Domain Parameters
- IBM MQ SSL curves supported
- On 2022-08-19 the NSA Commercial National Security Algorithm Suite replaced SUITE B
