融信链 vs CypherAir

融信链平台为社会公众提供基于区块链技术的电子签约服务，提供【合同起草】【实名认证】【在线签约】【订单管理】【到期提醒】【区块链存证】等功能。平台数据接入司法区块链、公证处系统为客户提供完整的电子合同证据链，为用户提供高效、方便、成本低的可信签约管理，一方合同违约另一方可以提起【信用监督】维护当事人合法权益。

CypherAir is a fully offline, open-source OpenPGP encryption tool built for iOS, iPadOS, macOS and VisionOS. It makes zero network connections. There is no telemetry, no tracking, and no possibility of data leakage. Two Encryption Profiles • Universal (Profile A) — Interoperable with GnuPG and all major PGP implementations. RFC 4880 compliant, employing Ed25519 and X25519 with SEIPDv1. • Advanced (Profile B) — Implements the latest OpenPGP standard, RFC 9580, with Ed448 and X448, authenticated encryption via AEAD (SEIPDv2), and Argon2id passphrase protection. Capabilities • Encrypt and decrypt text and files, processed as streams for efficiency • Create digital signatures — cleartext for messages, detached for files • Exchange public keys through QR codes using the system Camera, with no camera permission required • Manage multiple keys, each with its own encryption profile • Safeguard private keys in the Secure Enclave, unlocked only by Face ID or Touch ID Privacy Through Architecture • The sole system permission is the Face ID usage description • Private keys never leave the protection of Secure Enclave wrapping Open Source CypherAir is open source and available under the GNU General Public License v3.0 or later (GPL-3.0-or-later) or the Mozilla Public License 2.0 (MPL-2.0). Additional languages are in progress. Disclaimer No Warranty: You expressly acknowledge and agree that use of the Licensed Application is at your sole risk. To the maximum extent permitted by applicable law, the Licensed Application and any services performed or provided by the Licensed Application are provided "as is" and "as available," with all faults and without warranty of any kind, and Licensor hereby disclaims all warranties and conditions with respect to the Licensed Application and any services, either express, implied, or statutory, including, but not limited to, the implied warranties and/or conditions of merchantability, of satisfactory quality, of fitness for a particular purpose, of accuracy, of quiet enjoyment, and of noninfringement of third-party rights. No oral or written information or advice given by Licensor or its authorized representative shall create a warranty. Should the Licensed Application or services prove defective, you assume the entire cost of all necessary servicing, repair, or correction. Some jurisdictions do not allow the exclusion of implied warranties or limitations on applicable statutory rights of a consumer, so the above exclusion and limitations may not apply to you.