【概要】
■Line の暗号アルゴリズム(Letter Sealing) *1
| Version 1 | Version 2 | |
|---|---|---|
| Key exchange algorithm | ECDH over Curve25519 | 同左 |
| Message encryption algorithm | AES-256 in CBC mode | AES-256 in GCM mode |
| Message hash function | SHA-256 | N/A |
| Data authentication | AES-ECB with SHA256 MAC | AES-256 in GCM mode |
| Message data | Encryption and integrity | 同左 |
| Message metadata | Not protected | Integrity |
【ニュース】
◆LINE 暗号化状況レポート (LINE, 2020/11/11)
https://linecorp.com/ja/security/encryption/2020h1
【関連まとめ記事】
◆LINE (まとめ)
https://malware-log.hatenablog.com/entry/Line
