zcash-hackworks
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zcash-test-vectors
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Check 'is None' instead of boolean false 

Co-authored-by: Daira Hopwood <daira@jacaranda.org>
This commit is contained in:
ying tong 2021-05-27 12:50:30 +08:00 committed by therealyingtong
parent dbf772b00d
commit 2120658d5d
1 changed files with 7 additions and 7 deletions
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14
orchard_note_encryption.py
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@ -78,7 +78,7 @@ class OrchardNoteEncryption(object):
k_enc = kdf_orchard(shared_secret, ephemeral_key)
c_enc = OrchardSym.encrypt(k_enc, p_enc)
if not ovk:
if ovk is None:
ock = OrchardSym.k(self._rand)
op = self._rand.b(64)
else:
@ -108,14 +108,14 @@ class TransmittedNoteCipherText(object):
def decrypt_using_ivk(self, ivk: Scalar, rho, cm_star):
epk = self.epk
if not epk:
if epk is None:
return None
shared_secret = OrchardKeyAgreement.agree(ivk, epk)
ephemeral_key = bytes(epk)
k_enc = kdf_orchard(shared_secret, ephemeral_key)
p_enc = OrchardSym.decrypt(k_enc, self.c_enc)
if not p_enc:
if p_enc is None:
return None
leadbyte = p_enc[0]
@ -136,7 +136,7 @@ class TransmittedNoteCipherText(object):
return None
cm = note.note_commitment()
if not cm:
if cm is None:
return None
if cm != cm_star:
return None
@ -146,7 +146,7 @@ class TransmittedNoteCipherText(object):
def decrypt_using_ovk(self, ovk, rseed, rho, cv, cm_star):
ock = prf_ock_orchard(ovk, bytes(cv), bytes(cm_star.extract()), bytes(self.epk))
op = OrchardSym.decrypt(ock, self.c_out)
if not op:
if op is None:
return None
(pk_d_star, esk) = (op[0:32], op[32:64])
@ -161,7 +161,7 @@ class TransmittedNoteCipherText(object):
ephemeral_key = bytes(self.epk)
k_enc = kdf_orchard(shared_secret, ephemeral_key)
p_enc = OrchardSym.decrypt(k_enc, self.c_enc)
if not p_enc:
if p_enc is None:
return None
leadbyte = p_enc[0]
@ -176,7 +176,7 @@ class TransmittedNoteCipherText(object):
note = OrchardNote(np.d, pk_d, np.v.s, rho, np.rseed)
cm = note.note_commitment()
if not cm:
if cm is None:
return None
if cm != cm_star:
return None