Function decryptMessage

decryptMessage(
    envelope: ChatEnvelope,
    myPrivateKey: Uint8Array,
    myPublicKey: Uint8Array,
): DecryptedContent | null
Decrypts a message envelope

Automatically detects if we're the sender or recipient and uses the appropriate decryption path.
Parameters
- envelope: ChatEnvelope
- myPrivateKey: Uint8Array
- myPublicKey: Uint8Array
Returns DecryptedContent | null
- Defined in src/crypto/encryption.ts:108