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export interface ECNamedCurve {
/**
* The curve ASN.1 object identifier
*/
id: string;
/**
* The name of the curve
*/
name: string;
/**
* The coordinate length in bytes
*/
size: number;
}
export class ECNamedCurves {
public static readonly namedCurves: Record<string, ECNamedCurve> = {};
/**
* Registers an ECC named curve
* @param name The name o the curve
* @param id The curve ASN.1 object identifier
* @param size The coordinate length in bytes
*/
public static register(name: string, id: string, size: number): void {
this.namedCurves[name.toLowerCase()] = this.namedCurves[id] = { name, id, size };
}
/**
* Returns an ECC named curve object
* @param nameOrId Name or identifier of the named curve
* @returns
*/
static find(nameOrId: string): ECNamedCurve | null {
return this.namedCurves[nameOrId.toLowerCase()] || null;
}
static {
// Register default curves
// NIST
this.register("P-256", "1.2.840.10045.3.1.7", 32);
this.register("P-384", "1.3.132.0.34", 48);
this.register("P-521", "1.3.132.0.35", 66);
// Brainpool
this.register("brainpoolP256r1", "1.3.36.3.3.2.8.1.1.7", 32);
this.register("brainpoolP384r1", "1.3.36.3.3.2.8.1.1.11", 48);
this.register("brainpoolP512r1", "1.3.36.3.3.2.8.1.1.13", 64);
}
}