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Update Enclave.md

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docs/Privacy/Tessera/Tessera Services/Enclave.md
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@ -37,6 +37,15 @@ The enclaves **performs** the following actions on request:
- decrypting transactions for a given recipient (or sender)
- adding new recipients for existing payloads
### Private Key Generation Algorithm
The following steps detail the technique used to manage the private keys:
1. Given a password P
2. Generate random Argon2id nonce
3. Generate random NaCl secretbox nonce
4. Stretch P using Argon2id (and the Argon2id nonce) into a 32-byte master key (MK)
5. Encrypt Private key in secretbox using secretbox nonce and Argon2i-stretched MK
### Where does the Enclave sit in the private transaction flow?
The Enclave is the innermost actor of the sequence of events. The below diagram demonstrates where the enclave sits: