import type { DocCipher } from './types.js';
/**
 * Builds the identity {@link DocCipher} for a plaintext, content-addressed,
 * insert-only collection. `encrypt` is the identity transform with a content-id
 * key; `decrypt` returns the stored body unchanged; `encryptUpdate` throws -- a
 * content-addressed document is never updated in place (a changed document is a
 * different id).
 *
 * @param options {object}
 * @param options.collectionId {string}   labels the `encryptUpdate` error
 * @returns {DocCipher}
 */
export declare function createPlaintextDocCipher({ collectionId }: {
    collectionId: string;
}): DocCipher;
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