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zcash-fpga
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python script updates

This commit is contained in:
bsdevlin 2019-04-11 09:35:47 -04:00
parent f496533acc
commit 28363d8ae3
1 changed files with 21 additions and 11 deletions
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32
apps/python/zcash_fpga.py
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@ -1,5 +1,5 @@
class zcash_fpga:
import serial
import codecs
@ -19,13 +19,13 @@ class zcash_fpga:
'RESET_FPGA_RPL':int('80000000', 16),
'VERIFY_SECP256K1_SIG_RPL':int('80000101', 16)}
fpga_msg_dict = {fpga_msg_type_dict['VERIFY_SECP256K1_SIG_RPL']:{'name':'FPGA_IGNORE_RPL', 'feilds':[(8, 'index', byt_to_hex), (1, 'bm', byt_to_hex)]},
fpga_msg_dict = {fpga_msg_type_dict['VERIFY_SECP256K1_SIG_RPL']:{'name':'VERIFY_SECP256K1_SIG_RPL', 'feilds':[(8, 'index', byt_to_hex), (1, 'bm', byt_to_hex)]},
fpga_msg_type_dict['FPGA_IGNORE_RPL']:{'name':'FPGA_IGNORE_RPL', 'feilds':[(8, 'ignored_header', byt_to_hex)]},
fpga_msg_type_dict['FPGA_STATUS_RPL']:{'name':'FPGA_STATUS_RPL', 'feilds':[(4, 'version', byt_to_ver), (8, 'build_date', byt_to_str), (8, 'buid_host', byt_to_str), (8, 'cmd_cap', byt_to_hex)]},
fpga_msg_type_dict['RESET_FPGA_RPL']:{'name':'RESET_FPGA_RPL', 'feilds':[]}}
def __init__(self, COM='COM4'):
def __init__(self, COM='COM4'):
self.s = self.serial.Serial(COM, 921600, timeout=1)
#Test getting FPGA status
self.get_status()
@ -42,9 +42,9 @@ class zcash_fpga:
# Parse reply - should be reset
res = self.get_reply()
if (self.struct.unpack('<I', res[4:8])[0] != self.fpga_msg_type_dict['RESET_FPGA_RPL']):
print("ERROR: Reply type was not RESET_FPGA_RPL")
print("ERROR: Reply type was not RESET_FPGA_RPL")
def get_reply(self):
def get_reply(self):
res = self.s.read(1024)
if len(res) > 0:
self.print_reply(res)
@ -52,9 +52,9 @@ class zcash_fpga:
else:
print ("INFO: No reply received")
return None
def secp256k1_verify_sig(self, index, hsh, r, s, Qx, Qy):
cmd = '00000101000000B0'
cmd = '00000101000000B0'
cmd = format(index, 'x').ljust(16, '0') + cmd
cmd = format(s, 'x').ljust(64, '0') + cmd
cmd = format(r, 'x').ljust(64, '0') + cmd
@ -68,7 +68,16 @@ class zcash_fpga:
res = self.get_reply()
if res is not None and (self.struct.unpack('<I', res[4:8])[0] != self.fpga_msg_type_dict['VERIFY_SECP256K1_SIG_RPL']):
print("ERROR: Reply type was not VERIFY_SECP256K1_SIG_RPL")
return False
if (self.struct.unpack('<I', res[8:16])[0] != index):
print("ERROR: Index did not match")
return False
if (self.struct.unpack('<I', res[16:17])[0] != 0):
print("ERROR: Result bitmask was non-zero")
return False
print("INFO: Secp256k1 signature verified correctly")
return True
def close(self):
self.s.close()
print("Closed...")
@ -82,7 +91,7 @@ class zcash_fpga:
print("ERROR: Message length mismatch")
cmd = (self.struct.unpack('<I', msg[4:8])[0])
if (cmd not in self.fpga_msg_dict):
print("ERROR: Unknown message type:", cmd)
print("ERROR: Unknown message type:", cmd)
print ("INFO: Received ", self.fpga_msg_dict[cmd]['name'])
offset = 8
@ -94,7 +103,8 @@ class zcash_fpga:
#Example usages:
def example_secp256k1_sig():
zf = zcash_fpga()
zf.reset_fpga() # Reset incase somethign went wrong last run
index = 1234
hsh = 34597931798561447004034205848155169322219865803759328163562698792725658370004
r = 550117237093786687120086685263208063857013211911888854762107796665370524299