diff options
Diffstat (limited to 'src/lib')
| -rw-r--r-- | src/lib/pubkey/rsa/rsa.cpp | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/src/lib/pubkey/rsa/rsa.cpp b/src/lib/pubkey/rsa/rsa.cpp index 13425a46f..5804d0034 100644 --- a/src/lib/pubkey/rsa/rsa.cpp +++ b/src/lib/pubkey/rsa/rsa.cpp @@ -87,14 +87,14 @@ class RSA_Private_Operation BigInt blinded_private_op(const BigInt& m) const { + if(m >= n) + throw Invalid_Argument("RSA private op - input is too large"); + return m_blinder.unblind(private_op(m_blinder.blind(m))); } BigInt private_op(const BigInt& m) const { - if(m >= n) - throw Invalid_Argument("RSA private op - input is too large"); - auto future_j1 = std::async(std::launch::async, m_powermod_d1_p, m); BigInt j2 = m_powermod_d2_q(m); BigInt j1 = future_j1.get(); @@ -131,7 +131,8 @@ class RSA_Signature_Operation : public PK_Ops::Signature_with_EMSA, { const BigInt m(msg, msg_len); const BigInt x = blinded_private_op(m); - BOTAN_ASSERT(m == m_powermod_e_n(x), "RSA sign consistency check"); + const BigInt c = m_powermod_e_n(x); + BOTAN_ASSERT(m == c, "RSA sign consistency check"); return BigInt::encode_1363(x, n.bytes()); } }; @@ -154,7 +155,8 @@ class RSA_Decryption_Operation : public PK_Ops::Decryption_with_EME, { const BigInt m(msg, msg_len); const BigInt x = blinded_private_op(m); - BOTAN_ASSERT(m == m_powermod_e_n(x), "RSA decrypt consistency check"); + const BigInt c = m_powermod_e_n(x); + BOTAN_ASSERT(m == c, "RSA sign consistency check"); return BigInt::encode_locked(x); } }; |