/**
 * Standard (RFC 4648) base64 with padding. Used to decode the `signature`
 * parameter from the `Authorization` header, which the signer encodes with
 * padding (`Buffer.toString('base64')` in Node, `btoa`/`toBase64()` in the
 * browser).
 */
export declare const base64decode: import("@scure/base").BytesCoder;
/**
 * RFC 4648 url-safe base64 without padding. Used to decode the gzipped
 * capability from the `capability-invocation` header, which the signer encodes
 * unpadded (`Buffer.toString('base64url')` in Node, `toBase64({ omitPadding:
 * true })` in the browser).
 */
export declare const base64url: import("@scure/base").BytesCoder;
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