/// <reference types="node" />
export declare enum TagType {
    BOOLEAN = 1,
    INTEGER = 2,
    BIT_STRING = 3,
    OCTET_STRING = 4,
    NULL = 5,
    OBJECT_IDENTIFIER = 6,
    UTF8String = 12,
    NumericString = 18,
    PrintableString = 19,
    TeletexString = 20,
    IA5String = 22,
    UTCTime = 23,
    GeneralizedTime = 24,
    GraphicString = 25,
    VisibleString = 26,
    GeneralString = 27,
    UniversalString = 28,
    BMPString = 30
}
export interface BlockInfo {
    tag: TagType;
    position: number;
    length: number;
}
export declare function readTag(buf: Buffer, pos: number): BlockInfo;
export declare function _readStruct(buf: Buffer, blockInfo: BlockInfo): BlockInfo[];
export declare function parseBitString(buffer: Buffer, start: number, end: number, maxLength: number): string;
export interface BitString {
    lengthInBits: number;
    lengthInBytes: number;
    data: Buffer;
    debug?: any;
}
export declare function _readBitString(buffer: Buffer, block: BlockInfo): BitString;
export declare function formatBuffer2DigitHexWithColum(buffer: Buffer): string;
export declare function _readOctetString(buffer: Buffer, block: BlockInfo): Buffer;
export declare function _getBlock(buffer: Buffer, block: BlockInfo): Buffer;
export interface AlgorithmIdentifier {
    identifier: string;
}
export declare function _readIntegerAsByteString(buffer: Buffer, block: BlockInfo): Buffer;
export declare function _readListOfInteger(buffer: Buffer): Buffer[];
export declare function _readObjectIdentifier(buffer: Buffer, block: BlockInfo): {
    oid: string;
    name: string;
};
export declare function _readAlgorithmIdentifier(buffer: Buffer, block: BlockInfo): AlgorithmIdentifier;
export declare type SignatureValue = string;
export declare function _readSignatureValueBin(buffer: Buffer, block: BlockInfo): Buffer;
export declare function _readSignatureValue(buffer: Buffer, block: BlockInfo): SignatureValue;
export declare function _readLongIntegerValue(buffer: Buffer, block: BlockInfo): Buffer;
export declare function _readIntegerValue(buffer: Buffer, block: BlockInfo): number;
export declare function _readBooleanValue(buffer: Buffer, block: BlockInfo): boolean;
export declare function _readVersionValue(buffer: Buffer, block: BlockInfo): number;
export declare function _readValue(buffer: Buffer, block: BlockInfo): any;
export interface DirectoryName {
    stateOrProvinceName?: string;
    localityName?: string;
    organizationName?: string;
    organizationUnitName?: string;
    commonName?: string;
    countryName?: string;
}
export declare function compactDirectoryName(d: DirectoryName): string;
export declare function _readDirectoryName(buffer: Buffer, block: BlockInfo): DirectoryName;
export declare function _findBlockAtIndex(blocks: BlockInfo[], index: number): BlockInfo | null;
export declare function _readTime(buffer: Buffer, block: BlockInfo): any;