/**
 * Curve name mappings between JWK (`crv` member per RFC 7518 §6.2 and
 * RFC 8037 §2) and Node's `node:crypto` naming.
 *
 * EC curves (RFC 7518 §6.2.1.1) — "P-256", "P-384", "P-521".
 * OKP curves (RFC 8037 §2) — "Ed25519", "Ed448", "X25519", "X448".
 * The `secp256k1` curve is registered for JOSE by RFC 8812 (JWK crv value
 * "secp256k1", JWS alg "ES256K") and is included for Web3 / Bitcoin use
 * cases.
 *
 * These tables are pure data — no logic. They translate between two
 * naming worlds so callers never have to guess which spelling wins.
 */
/**
 * JWK `crv` → Node `namedCurve` for EC keys.
 * Node accepts either the RFC-friendly names (`prime256v1`) or the JWK
 * names (`P-256`) via {@link node:crypto.generateKeyPair}, but our own
 * generate/import path normalises through this table.
 */
export const EC_CURVES: Readonly<{
    'P-256': "prime256v1";
    'P-384': "secp384r1";
    'P-521': "secp521r1";
    secp256k1: "secp256k1";
}>;
/** Inverse of {@link EC_CURVES}: Node curve → JWK `crv`. */
export const EC_CURVES_INVERSE: Readonly<{
    [k: string]: string;
}>;
/**
 * OKP curves recognised by RFC 8037.
 * Node's `generateKeyPair('ed25519' | 'ed448' | 'x25519' | 'x448')`
 * uses lowercase; JWK uses the canonical mixed case shown here.
 */
export const OKP_CURVES: Readonly<{
    Ed25519: "ed25519";
    Ed448: "ed448";
    X25519: "x25519";
    X448: "x448";
}>;
/** Inverse of {@link OKP_CURVES}: Node type → JWK `crv`. */
export const OKP_CURVES_INVERSE: Readonly<{
    [k: string]: string;
}>;
/**
 * Component byte length for each EC curve — the fixed size that `x`, `y`
 * (and private `d`) must decode to after base64url unpadding. Used by
 * {@link ../validate.js validate} to reject malformed coordinates.
 */
export const EC_COORD_BYTES: Readonly<{
    'P-256': 32;
    'P-384': 48;
    'P-521': 66;
    secp256k1: 32;
}>;
/**
 * Public-key length for each OKP curve. Ed25519 / X25519 are 32 bytes;
 * Ed448 is 57, X448 is 56.
 */
export const OKP_KEY_BYTES: Readonly<{
    Ed25519: 32;
    Ed448: 57;
    X25519: 32;
    X448: 56;
}>;