def computeSignature(self, secretKeyMessage):
"""
Compute self signature
"""
key = secretKeyMessage.packets[SecretKeyPacket.TAG]
m = encoding.hashEncode(self.hashdata(),
key.n.bits() - 1,
crypto.HASH_SHA256, encoding.ENCODING_PKCSPSS)
s = crypto.rsaSign(crypto.b2i(m), key.d.value, key.n.value)
self.signature = MPIElement(s)
def hash(self, bits):
"""
Hash used for blind signature of CA.
"""
return encoding.hashEncode(self.rep(), bits, crypto.HASH_SHA256,
encoding.ENCODING_PKCS15)
