export type KeyTransferToken = 'e' | 's';
export type KeyMixToken = 'ee' | 'es' | 'se' | 'ss' | 'psk';
export type Token = KeyTransferToken | KeyMixToken;
export type PreMessage = ['e'] | ['s'] | ['e', 's'] | [];
export interface HandshakePattern {
    name: string;
    baseName: string;
    messages: Token[][];
    initiatorPreMessage: PreMessage;
    responderPreMessage: PreMessage;
}
export declare const PATTERNS: {
    [key: string]: HandshakePattern;
};
export declare function isOneWay(pat: HandshakePattern): boolean;
export declare function lookupPattern(name: string): HandshakePattern | null;