import type { BinaryWriteOptions } from "@protobuf-ts/runtime";
import type { IBinaryWriter } from "@protobuf-ts/runtime";
import type { BinaryReadOptions } from "@protobuf-ts/runtime";
import type { IBinaryReader } from "@protobuf-ts/runtime";
import type { PartialMessage } from "@protobuf-ts/runtime";
import { MessageType } from "@protobuf-ts/runtime";
/**
 *
 * A signature and details to help verify it.
 *
 * #### Generation
 *
 * - Compute a CID from the `piece` bytes using details from `signature`:
 *     - [CIDv1](https://github.com/multiformats/cid).
 *     - The hash function should be blake2b-256 and `multiHashType` should be empty.
 *     - Content type codec `0x55`
 *     - Base encoded in Base32 with the prefix `b`
 *     - Example: bafk2bzacea73ycjnxe2qov7cvnhx52lzfp6nf5jcblnfus6gqreh6ygganbws
 *
 * - Store the public key of the signer in `publicKey` in binary encoding.
 *
 * - Store the current time in `timestamp`
 *     - In JavaScript: `timestamp = +new Date()`
 *
 * - Format the current time in ISO 8601 `YYYY-MM-DDTHH:mm:ss.sssZ`
 * - In JavaScript: `timeText = new Date(timestamp).toISOString()`
 * - In Go format: `2006-01-02T15:04:05.000Z`
 *
 * - The signed message to store a piece is:
 *     - `<Bytes>DDC store ${CID} at ${timeText}</Bytes>`
 *     - Note: the `<Bytes>` part is enforced by the Polkadot.js browser extension.
 *     - Example: `<Bytes>DDC store bafk2bzacea73ycjnxe2qov7cvnhx52lzfp6nf5jcblnfus6gqreh6ygganbws at 2022-06-27T07:33:44.607Z</Bytes>`
 *
 * - The signing scheme should be sr25519, and `scheme` should be empty.
 *     - If this not supported by a signer, then `scheme` should be "ed25519".
 *
 * - Sign and store the signature in `sig` in binary encoding.
 *
 * #### Verification
 *
 * - Recompute the signed message using the details in `signature`.
 * - Verify `sig` given the scheme, the message, and the public key.
 *
 * #### Legacy signatures before v0.1.4
 *
 * If `timestamp == 0`, assume an older version:
 * - Decode `value` and `signer` from hexadecimal with or without `0x`.
 * - Then the signed message is either `${CID}` or `<Bytes>${CID}</Bytes>`.
 *
 *
 * @generated from protobuf message pb.Signature
 */
export interface Signature {
    /**
     * The cryptographic signature in binary encoding as per the scheme.
     *
     * @generated from protobuf field: bytes value = 1;
     */
    value: Uint8Array;
    /**
     * The public key of the signer in binary encoding as per the scheme.
     *
     * @generated from protobuf field: bytes signer = 2;
     */
    signer: Uint8Array;
    /**
     * The name of the signature scheme (sr25519, secp256k1, ed25519).
     * Default and recommended value: "" or "sr25519".
     *
     * @generated from protobuf field: string scheme = 3;
     */
    scheme: string;
    /**
     * The ID of the hashing algorithm as per multiformats/multihash.
     * Default and recommended value: 0 or 0xb220, meaning blake2b-256.
     *
     * @generated from protobuf field: uint64 multiHashType = 4;
     */
    multiHashType: bigint;
    /**
     * The timestamp in UNIX milliseconds.
     *
     * @generated from protobuf field: uint64 timestamp = 5;
     */
    timestamp: bigint;
}
declare class Signature$Type extends MessageType<Signature> {
    constructor();
    create(value?: PartialMessage<Signature>): Signature;
    internalBinaryRead(reader: IBinaryReader, length: number, options: BinaryReadOptions, target?: Signature): Signature;
    internalBinaryWrite(message: Signature, writer: IBinaryWriter, options: BinaryWriteOptions): IBinaryWriter;
}
/**
 * @generated MessageType for protobuf message pb.Signature
 */
export declare const Signature: Signature$Type;
export {};
//# sourceMappingURL=signature.d.ts.map