diff options
Diffstat (limited to 'frozen_deps/Cryptodome/Signature/pss.py')
| -rw-r--r-- | frozen_deps/Cryptodome/Signature/pss.py | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/frozen_deps/Cryptodome/Signature/pss.py b/frozen_deps/Cryptodome/Signature/pss.py index 0b05ed2..b929e26 100644 --- a/frozen_deps/Cryptodome/Signature/pss.py +++ b/frozen_deps/Cryptodome/Signature/pss.py @@ -107,10 +107,11 @@ class PSS_SigScheme: em = _EMSA_PSS_ENCODE(msg_hash, modBits-1, self._randfunc, mgf, sLen) # Step 2a (OS2IP) em_int = bytes_to_long(em) - # Step 2b (RSASP1) - m_int = self._key._decrypt(em_int) - # Step 2c (I2OSP) - signature = long_to_bytes(m_int, k) + # Step 2b (RSASP1) and Step 2c (I2OSP) + signature = self._key._decrypt_to_bytes(em_int) + # Verify no faults occurred + if em_int != pow(bytes_to_long(signature), self._key.e, self._key.n): + raise ValueError("Fault detected in RSA private key operation") return signature def verify(self, msg_hash, signature): @@ -178,7 +179,7 @@ def MGF1(mgfSeed, maskLen, hash_gen): :return: the mask, as a *byte string* """ - + T = b"" for counter in iter_range(ceil_div(maskLen, hash_gen.digest_size)): c = long_to_bytes(counter, 4) |