Converter page

AuthKey / HEX:DC to Session+JSON or TData

Converts Telegram authorization keys into Telethon-ready Session+JSON output or TData for desktop-oriented workflows.

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HC2S Converter

AuthKey / HEX:DC -> Session+JSON / TData

Input formats

AuthKey HEX:DC DC:HEX

Output formats

Session Session+JSON TData

Strength Raw key ingestion

Best for Session recovery and export

Designed for workflows where raw Telegram authorization material needs to become a usable session package or desktop-ready output with minimal friction.

Capabilities

What this converter is built for

Accepts AuthKey, HEX:DC, and DC:HEX input variants Supports cold conversion and old layer compatibility Includes device emulation, 2FA handling, and proxy routing Sorts results and keeps source files backed up before work Supports multithreading, logging, retry control, and backup

Releases

Latest builds and release notes

Track the latest stable version, review recent changes, and download the build you need by language.

Latest release

v.1.1

August 31, 2026

– Updated and expanded device and app version lists for all categories.
– Added option to select a specific language when creating a new session for an account.
– Improved proxy verification.
– Fixed some bugs and UI tweaks.

EN HC2S_Converter_v.1.1_EN.exe RU HC2S_Converter_v.1.1_RU.exe ZH HC2S_Converter_v.1.1_CN.exe

v.1.0

Feb 18, 2026 Open release Close release

Initial release. Built on extensive experience gained from earlier converters.

EN HC2S_Converter_v.1.0_EN.exe RU HC2S_Converter_v.1.0_RU.exe ZH HC2S_Converter_v.1.0_CN.exe

Search phrases

Common route names for this converter

This converter covers the AuthKey / HEX:DC -> Session+JSON / TData workflow and related route phrases used in search and documentation.

authkey-to-session authkey-to-session-json authkey-to-tdata hexdc-to-session dc-hex-to-session-json authkey-hex:dc-to-session+json-tdata