Updated HackRF firmware

SoftwareDefined/HackRF/hackrf-2021.03.1/firmware/tools/dumb_crc32.py

@@ -0,0 +1,22 @@
+
+class DumbCRC32(object):
+	def __init__(self):
+		self._remainder = 0xffffffff
+		self._reversed_polynomial = 0xedb88320
+		self._final_xor = 0xffffffff
+
+	def update(self, data):
+		bit_count = len(data) * 8
+		for bit_n in range(bit_count):
+			bit_in = data[bit_n >> 3] & (1 << (bit_n & 7))
+			self._remainder ^= 1 if bit_in != 0 else 0
+			bit_out = (self._remainder & 1)
+			self._remainder >>= 1;
+			if bit_out != 0:
+				self._remainder ^= self._reversed_polynomial;
+
+	def digest(self):
+		return self._remainder ^ self._final_xor
+
+	def hexdigest(self):
+		return '%08x' % self.digest()