/**
 * Protocol constants for EHBP (Encrypted HTTP Body Protocol)
 */
export declare const PROTOCOL: {
    readonly ENCAPSULATED_KEY_HEADER: "Ehbp-Encapsulated-Key";
    readonly RESPONSE_NONCE_HEADER: "Ehbp-Response-Nonce";
    readonly KEYS_MEDIA_TYPE: "application/ohttp-keys";
    readonly KEYS_PATH: "/.well-known/hpke-keys";
    readonly PROBLEM_JSON_MEDIA_TYPE: "application/problem+json";
    readonly KEY_CONFIG_PROBLEM_TYPE: "urn:ietf:params:ehbp:error:key-config";
};
/**
 * HPKE suite configuration matching the Go implementation
 */
export declare const HPKE_CONFIG: {
    readonly KEM: 32;
    readonly KDF: 1;
    readonly AEAD: 2;
};
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