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Rev 9987 Rev 9990
Line 60... Line 60...
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        lea     ecx, [ebx+sshlib_connection.rx_crypt_ctx]
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        lea     ecx, [ebx+sshlib_connection.rx_crypt_ctx]
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        lea     edx, [ebx+sshlib_connection.rx_enc_key+256/8]
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        lea     edx, [ebx+sshlib_connection.rx_enc_key+256/8]
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        lea     esi, [ebx+sshlib_connection.rx_buffer]
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        lea     esi, [ebx+sshlib_connection.rx_buffer]
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        lea     edi, [data_length]
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        lea     edi, [data_length]
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        invoke  chacha20_oneshot, ecx, edx, eax, 0, esi, 4, edi
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        invoke  chacha20.oneshot, ecx, edx, eax, 0, esi, 4, edi
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        mov     eax, [data_length]
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        mov     eax, [data_length]
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        bswap   eax
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        bswap   eax
Line 92... Line 92...
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        mov     ebx, [con_ptr]
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        mov     ebx, [con_ptr]
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        lea     eax, [ebx+sshlib_connection.rx_crypt_ctx]
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        lea     eax, [ebx+sshlib_connection.rx_crypt_ctx]
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        lea     esi, [ebx+sshlib_connection.rx_enc_key]
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        lea     esi, [ebx+sshlib_connection.rx_enc_key]
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        lea     edx, [mac_otk]
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        lea     edx, [mac_otk]
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        lea     ecx, [iv]
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        lea     ecx, [iv]
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        invoke  chacha20_oneshot, eax, esi, ecx, 0, null_bytes, 64, edx
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        invoke  chacha20.oneshot, eax, esi, ecx, 0, null_bytes, 64, edx
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; Calculate the MAC
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; Calculate the MAC
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        lea     esi, [ebx+sshlib_connection.rx_mac_ctx]
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        lea     esi, [ebx+sshlib_connection.rx_mac_ctx]
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        lea     edi, [ebx+sshlib_connection.rx_buffer]
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        lea     edi, [ebx+sshlib_connection.rx_buffer]
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        mov     ecx, [data_length]
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        mov     ecx, [data_length]
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        add     ecx, 4
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        add     ecx, 4
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        lea     edx, [mac_otk]
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        lea     edx, [mac_otk]
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        push    ecx
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        push    ecx
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        invoke  poly1305_oneshot, esi, edi, ecx, edx, 256/8
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        invoke  poly1305.oneshot, esi, edi, ecx, edx, 256/8
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        pop     ecx
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        pop     ecx
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; Compare in constant time
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; Compare in constant time
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        jne     .mac_fail
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        jne     .mac_fail
Line 125... Line 125...
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; Decrypt the payload
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; Decrypt the payload
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        lea     eax, [ebx+sshlib_connection.rx_crypt_ctx]
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        lea     eax, [ebx+sshlib_connection.rx_crypt_ctx]
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        lea     edi, [ebx+sshlib_connection.rx_buffer+4]
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        lea     edi, [ebx+sshlib_connection.rx_buffer+4]
Line 129... Line 129...
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        invoke  chacha20_update, eax, edi, [data_length], edi
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        invoke  chacha20.update, eax, edi, [data_length], edi
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; Put decrypted length in rx buffer
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; Put decrypted length in rx buffer
Line 238... Line 238...
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        pop     dword[eax+12]
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        pop     dword[eax+12]
Line 239... Line 239...
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        lea     esi, [ebx+sshlib_connection.tx_crypt_ctx]
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        lea     esi, [ebx+sshlib_connection.tx_crypt_ctx]
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        lea     edx, [ebx+sshlib_connection.tx_enc_key+256/8]
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        lea     edx, [ebx+sshlib_connection.tx_enc_key+256/8]
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        lea     edi, [ebx+sshlib_connection.tx_buffer]
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        lea     edi, [ebx+sshlib_connection.tx_buffer]
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        invoke  chacha20_oneshot, esi, edx, eax, 0, edi, 4, edi
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        invoke  chacha20.oneshot, esi, edx, eax, 0, edi, 4, edi
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; Calculate the OTK
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; Calculate the OTK
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        lea     eax, [iv]
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        lea     eax, [iv]
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        lea     edx, [ebx+sshlib_connection.tx_enc_key]
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        lea     edx, [ebx+sshlib_connection.tx_enc_key]
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        lea     edi, [mac_otk]
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        lea     edi, [mac_otk]
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        invoke  chacha20_oneshot, esi, edx, eax, 0, null_bytes, 64, edi
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        invoke  chacha20.oneshot, esi, edx, eax, 0, null_bytes, 64, edi
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; Encrypt the payload
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; Encrypt the payload
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        lea     edi, [ebx+sshlib_connection.tx_buffer+4]
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        lea     edi, [ebx+sshlib_connection.tx_buffer+4]
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        mov     eax, [packet_size]
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        mov     eax, [packet_size]
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        sub     eax, 4
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        sub     eax, 4
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        invoke  chacha20_update, esi, edi, eax, edi
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        invoke  chacha20.update, esi, edi, eax, edi
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; Calculate the MAC
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; Calculate the MAC
Line 258... Line 258...
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        lea     esi, [ebx+sshlib_connection.tx_mac_ctx]
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        lea     esi, [ebx+sshlib_connection.tx_mac_ctx]
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        lea     edi, [ebx+sshlib_connection.tx_buffer]
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        lea     edi, [ebx+sshlib_connection.tx_buffer]
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        lea     edx, [mac_otk]
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        lea     edx, [mac_otk]
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        invoke  poly1305_oneshot, esi, edi, [packet_size], edx, 256/8
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        invoke  poly1305.oneshot, esi, edi, [packet_size], edx, 256/8