PyBitmessage-2021-04-27/docs/encrypted_payload.rst

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+------------+-------------+-----------+--------------------------------------------+
| Field Size | Description | Data type | Comments |
+============+=============+===========+============================================+
| 16 | IV | uchar[] | Initialization Vector used for AES-256-CBC |
+------------+-------------+-----------+--------------------------------------------+
| 2 | Curve type | uint16_t | Elliptic Curve type 0x02CA (714) |
+------------+-------------+-----------+--------------------------------------------+
| 2 | X length | uint16_t | Length of X component of public key R |
+------------+-------------+-----------+--------------------------------------------+
| X length | X | uchar[] | X component of public key R |
+------------+-------------+-----------+--------------------------------------------+
| 2 | Y length | uint16_t | Length of Y component of public key R |
+------------+-------------+-----------+--------------------------------------------+
| Y length | Y | uchar[] | Y component of public key R |
+------------+-------------+-----------+--------------------------------------------+
| ? | encrypted | uchar[] | Cipher text |
+------------+-------------+-----------+--------------------------------------------+
| 32 | MAC | uchar[] | HMACSHA256 Message Authentication Code |
+------------+-------------+-----------+--------------------------------------------+