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Elliptic curves are widely used, despite being defined and described differently by different groups in the cryptographic world. The following table attempts to reconcile curve names across three different standards organizations, the SEC Group, ANSI, and NIST.
| SECG | ANSI X9.62 | NIST |
|---|---|---|
| sect163k1 | NIST K-163 | |
| sect163r1 | ||
| sect163r2 | NIST B-163 | |
| sect193r1 | ||
| sect193r2 | ||
| sect233k1 | NIST K-233 | |
| sect233r1 | NIST B-233 | |
| sect239k1 | ||
| sect283k1 | NIST K-283 | |
| sect283r1 | NIST B-283 | |
| sect409k1 | NIST K-409 | |
| sect409r1 | NIST B-409 | |
| sect571k1 | NIST K-571 | |
| sect571r1 | NIST B-571 | |
| secp160k1 | ||
| secp160r1 | ||
| secp160r2 | ||
| secp192k1 | ||
| secp192r1 | prime192v1 | NIST P-192 |
| secp224k1 | ||
| secp224r1 | NIST P-224 | |
| secp256k1 | ||
| secp256r1 | prime256v1 | NIST P-256 |
| secp256r1 | NIST P-384 | |
| secp521r1 | NIST P-521 |
For additional information about the Elliptic Curve specification, see this article: