import { ASN1Element as _Element } from "@wildboar/asn1";
import * as $ from "@wildboar/asn1/functional";
import { IssuerAndSerialNumber } from "../CryptographicMessageSyntax-2010/IssuerAndSerialNumber.ta.mjs";
import { RecipientKeyIdentifier } from "../CryptographicMessageSyntax-2010/RecipientKeyIdentifier.ta.mjs";
import { SubjectKeyIdentifier } from "../CryptographicMessageSyntax-2010/SubjectKeyIdentifier.ta.mjs";
/**
 * @summary SMIMEEncryptionKeyPreference
 * @description
 *
 * ### ASN.1 Definition:
 *
 * ```asn1
 * SMIMEEncryptionKeyPreference  ::=  CHOICE {
 * issuerAndSerialNumber    [0] IssuerAndSerialNumber,
 * receipentKeyId        [1] RecipientKeyIdentifier,
 * subjectAltKeyIdentifier    [2] SubjectKeyIdentifier
 * }
 * ```
 */
export type SMIMEEncryptionKeyPreference = {
    issuerAndSerialNumber: IssuerAndSerialNumber;
} | {
    receipentKeyId: RecipientKeyIdentifier;
} | {
    subjectAltKeyIdentifier: SubjectKeyIdentifier;
};
/**
 * @summary Decodes an ASN.1 element into a(n) SMIMEEncryptionKeyPreference
 * @function
 * @param {_Element} el The element being decoded.
 * @returns {SMIMEEncryptionKeyPreference} The decoded data structure.
 */
export declare function _decode_SMIMEEncryptionKeyPreference(el: _Element): SMIMEEncryptionKeyPreference;
/**
 * @summary Encodes a(n) SMIMEEncryptionKeyPreference into an ASN.1 Element.
 * @function
 * @param value The element being encoded.
 * @param elGetter A function that can be used to get new ASN.1 elements.
 * @returns {_Element} The SMIMEEncryptionKeyPreference, encoded as an ASN.1 Element.
 */
export declare function _encode_SMIMEEncryptionKeyPreference(value: SMIMEEncryptionKeyPreference, elGetter: $.ASN1Encoder<SMIMEEncryptionKeyPreference>): _Element;
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