Update annotations in common/inc/sgx_tseal.h

[yang8621]

suggested changes to aviod confusion:
typedef struct _aes_gcm_data_t
{
-uint32_t payload_size; /* 0: Size of the payload which includes both the encrypted data and the optional additional MAC text /
-uint8_t reserved[12]; / 4: Reserved bits /
+uint32_t payload_size; / 0: Size of the payload which includes the encrypted data: payload[] /
+uint8_t reserved[SGX_SEAL_IV_SIZE]; / 4: Reserved bits used as iv /
uint8_t payload_tag[SGX_SEAL_TAG_SIZE]; / 16: AES-GMAC of the plain text, payload, and the sizes /
-uint8_t payload[]; / 32: The payload data which includes the encrypted data followed by the optional additional MAC text /
+uint8_t payload[]; / 32: The payload data which includes the encrypted data followed by payload_tag */
} sgx_aes_gcm_data_t;

typedef struct _sealed_data_t
{
sgx_key_request_t key_request; /* 00: The key request used to obtain the sealing key /
-uint32_t plain_text_offset; / 64: Offset within aes_data.playload to the start of the optional additional MAC text /
-uint8_t reserved[12]; / 68: Reserved bits /
-sgx_aes_gcm_data_t aes_data; / 80: Data structure holding the AES/GCM related data /
+uint32_t plain_text_offset; / 512: Offset within aes_data.playload to the start of the optional additional MAC text /
+uint8_t reserved[12]; / 516: Reserved bits /
+sgx_aes_gcm_data_t aes_data; / 528: Data structure holding the AES/GCM related data */
} sgx_sealed_data_t;

[yang8621]

#640