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Services/KeyExchange: Difference between revisions
→Key derivation
| Line 83: | Line 83: | ||
extraction_key = "\x00" * 32 | extraction_key = "\x00" * 32 | ||
key_string = HMAC-SHA256(K, extraction_key) | key_string = HMAC-SHA256(K, extraction_key) | ||
key_verification_hash = SHA256(SHA256(key_string)) | |||
T(1) = HMAC-SHA256(key_string, "" + "Sync-AES_256_CBC-HMAC256" + 0x01) | T(1) = HMAC-SHA256(key_string, "" + "Sync-AES_256_CBC-HMAC256" + 0x01) | ||