# C.SIGN

> C.SIGN (iPhone/iPad app by CMC Technology and Solution Company Limited.)

- Source: https://appshunter.io/ios/app/csign/id6443462181 (this page in markdown: same URL + `.md`)
- Developer: [CMC Technology and Solution Company Limited](https://appshunter.io/developer/1498575851)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 13.0 · 162 MB
- Languages: English, Lao, Vietnamese
- Released: 2022-10-06
- Data updated: 2026-02-21
- User reviews in markdown: https://appshunter.io/ios/app/csign/id6443462181/reviews.md

## What is C.SIGN?

C.SIGN IS A SMART SECURITY KEY FOR ONLINE SERVICES. C.SIGN GIVES USERS THE ABILITY TO SECURELY AUTHORIZE AND APPROVE THE SIGNING OF DOCUMENTS OR TRANSACTIONS. RELYING PARTY CAN TRIGGER THE SIGNING PROCESS AND USERS CAN AUTHORIZE THIS REMOTELY FROM THEIR MOBILE DEVICE USING TWO-FACTOR AUTHENTICATION

KEY FEATURES:
- ASSIST IN ARCHIVING EU EIDAS QUALIFIED REMOTE SIGNING (TS 419 241 LEVEL 2 SOLE CONTROL) FOR SERVER-SIDE SIGNING
- AUTOMATICALLY LOAD AUTHORIZATION REQUESTS TO NOTIFY USERS
- CRYPTOGRAPHICALLY PROTECTED AUTHORIZATION FILE THAT HOLDS THE  SIGNATURE ACTIVATION DATA
- AUTHENTICATE USING TOUCHID, FACEID OR PIN CODE TO ACCESS AUTHORIZATION KEY
- WORKS WITH ANY SERVER-SIDE SIGNING PROCESS

SIMPLICITY:
- INTUITIVE AND EASY TO USE FOR NON-TECHNICAL USERS
- ALLOW USERS TO APPROVE PENDING AUTHORIZATION REQUESTS QUICKLY AND REMOTELY
- ALLOW ORGANIZATIONS TO CONNECT WITH THEIR OWN HOSTED SERVERS

ADVANCED SECURITY:
- GENERATION OF AUTHORIZATION KEY USING RSA ALGORITHM
- KEYS STORED IN SECURE ENCLAVE OF MOBILE DEVICE AND LOCKED WITH TOUCHID/FACEID OR PIN CODE
- AES 256-BIT ENCRYPTION OVER TLS/SSL
- TOUCHID, FACEID OR PIN CODE FOR UNBLOCKING ACCESS TO THE SECURE 
ENCLAVE

TRACEABILITY:
- SIGNING EVIDENCE EMBEDDED INSIDE THE DIGITALLY SIGNED AUTHORIZATION RESPONSE

UTILITIES:
- ALLOWED THE CUSTOMER ONBOARDING EASIER
- CHECK THE VALID IMAGES OF AN ID AND EXTRACT INFORMATION FROM PHOTO OF AN ID
- CHECK FOR A MATCH BETWEEN A SELFIE AND AN ID. CHECK IF A SELFIE IS CAPTURED LIVE AND NOT FABRICATED
- CHECK FOR A VALID SELFIE. CHECK IF A FACE EXISTS IN RECORDS


## Version history (last 4 releases)

### 1.3 — 2022-12-23

Fix bug and optimize!

### 1.2 — 2022-12-06

Optimize code!

### 1.1 — 2022-10-11

Fix bug.

### 1.0 — 2022-10-06

No release notes.

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## More apps by CMC Technology and Solution Company Limited

- [BSH Bplace](https://appshunter.io/ios/app/bsh-bplace/id1616304278)
- [BSH Bplace 2.0](https://appshunter.io/ios/app/bsh-bplace-20/id6478585980)

All apps by CMC Technology and Solution Company Limited: https://appshunter.io/developer/1498575851

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-02-21.*