import { Brand } from 'effect';
/**
 * The kind of signature scheme that a {@link SigningKey} is used with.
 *
 * @remarks
 * This mirrors the `SignatureKind` discriminant used by the Midnight ledger (Ledger 9). It is kept as a plain
 * string literal union so that a {@link SigningKey} is structurally compatible with the ledger's representation
 * without requiring a direct dependency on it.
 *
 * @category models
 */
export type SignatureKind = (typeof SignatureKinds)[number];
/**
 * All supported {@link SignatureKind} values.
 *
 * @category models
 */
export declare const SignatureKinds: readonly ["schnorr", "ecdsa"];
/**
 * The default {@link SignatureKind} assumed when none is configured.
 *
 * @category models
 */
export declare const DefaultSignatureKind: SignatureKind;
/**
 * A signing key, comprising the {@link SignatureKind | kind} of signature scheme it is used with, along with the
 * raw key {@link SigningKey.Value | value}.
 *
 * @remarks
 * A signing key is used to create a Contract Maintenance Authority (CMA) when initializing a new contract.
 * It is used to create a verifying key that is included in the contract deployment data that will
 * eventually be stored on the Midnight network.
 *
 * The shape `{ tag, value }` is structurally compatible with the signing key representation used by the Midnight
 * ledger (Ledger 9).
 *
 * @category keys
 */
export interface SigningKey {
    /**
     * The kind of signature scheme this key is used with.
     */
    readonly tag: SignatureKind;
    /**
     * The raw key value, a public BIP-340 signing key, 32 bytes in length, with an optional 3-byte version prefix.
     */
    readonly value: SigningKey.Value;
}
export declare namespace SigningKey {
    /**
     * The raw value of a {@link SigningKey}; a hex-encoded string 32 bytes in length, with an optional 3-byte
     * version prefix.
     *
     * @category keys
     */
    type Value = Brand.Branded<string, 'SigningKeyValue'>;
}
/**
 * Creates a {@link SigningKey.Value} from a hex-encoded source string.
 *
 * @category constructors
 */
export declare const Value: Brand.Brand.Constructor<string & Brand.Brand<"PlainHex"> & Brand.Brand<"SigningKeyValue">>;
/**
 * Creates a {@link SigningKey} from a raw key value and an optional {@link SignatureKind}.
 *
 * @param value The raw key value. A string source is validated and branded as a {@link SigningKey.Value}.
 * @param tag The {@link SignatureKind} the key is used with. Defaults to {@link DefaultSignatureKind}
 * (`'schnorr'`).
 * @returns A {@link SigningKey}.
 *
 * @category constructors
 */
export declare const make: (value: SigningKey.Value | string, tag?: SignatureKind) => SigningKey;
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