interface ParsedKey {
    type: string;
    comment: string;
    sign(data: Buffer, algorithm?: string): Buffer;
    verify(data: Buffer, signature: Buffer, algorithm?: string): boolean;
    isPrivateKey(): boolean;
    getPrivatePEM(): string;
    getPublicPEM(): string;
    getPublicSSH(): Buffer;
    equals(other: ParsedKey): boolean;
}
export declare function parseKey(keyData: string | Buffer, passphrase?: string): ParsedKey | null;
export {};
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