import { RequestSigner, SignRequestParams } from './types.js';
export declare class WebCryptoSigner implements RequestSigner {
    private readonly subtle;
    constructor(subtle?: SubtleCrypto);
    private sha1Hex;
    private hmacSha1Hex;
    signRequest(params: SignRequestParams): Promise<string>;
}
//# sourceMappingURL=WebCryptoSigner.d.ts.map