export type { MlKemLike } from '../mlkem/suite.js';
export interface RatchetInitResult {
    readonly nextRootKey: Uint8Array;
    readonly sendChainKey: Uint8Array;
    readonly recvChainKey: Uint8Array;
}
export interface KemEncapResult {
    readonly nextRootKey: Uint8Array;
    readonly sendChainKey: Uint8Array;
    readonly recvChainKey: Uint8Array;
    readonly kemCt: Uint8Array;
}
export interface KemDecapResult {
    readonly nextRootKey: Uint8Array;
    readonly sendChainKey: Uint8Array;
    readonly recvChainKey: Uint8Array;
}
export interface RatchetMessageHeader {
    readonly epoch: number;
    readonly counter: number;
    readonly pn?: number;
    readonly kemCt?: Uint8Array;
}
export interface ResolveHandle {
    readonly key: Uint8Array;
    commit(): void;
    rollback(): void;
}
export interface SkippedKeyStoreOpts {
    /** Max keys held in cache. Default 100. Must be >= maxSkipPerResolve. */
    maxCacheSize?: number;
    /** Max skip-ahead derivations per resolve() call. Default 50. */
    maxSkipPerResolve?: number;
    /** @deprecated use maxCacheSize + maxSkipPerResolve. If provided, sets both. */
    ceiling?: number;
}