diff options
Diffstat (limited to 'mysql/extra/yassl/taocrypt/src/dsa.cpp')
| -rw-r--r-- | mysql/extra/yassl/taocrypt/src/dsa.cpp | 274 |
1 files changed, 0 insertions, 274 deletions
diff --git a/mysql/extra/yassl/taocrypt/src/dsa.cpp b/mysql/extra/yassl/taocrypt/src/dsa.cpp deleted file mode 100644 index b19fed9..0000000 --- a/mysql/extra/yassl/taocrypt/src/dsa.cpp +++ /dev/null @@ -1,274 +0,0 @@ -/* - Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; version 2 of the License. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; see the file COPYING. If not, write to the - Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, - MA 02110-1301 USA. -*/ - - -#include "runtime.hpp" -#include "dsa.hpp" -#include "sha.hpp" -#include "asn.hpp" -#include "modarith.hpp" - - -namespace TaoCrypt { - - -void DSA_PublicKey::Swap(DSA_PublicKey& other) -{ - p_.Swap(other.p_); - q_.Swap(other.q_); - g_.Swap(other.g_); - y_.Swap(other.y_); -} - - -DSA_PublicKey::DSA_PublicKey(const DSA_PublicKey& other) - : p_(other.p_), q_(other.q_), g_(other.g_), y_(other.y_) -{} - - -DSA_PublicKey& DSA_PublicKey::operator=(const DSA_PublicKey& that) -{ - DSA_PublicKey tmp(that); - Swap(tmp); - return *this; -} - - -DSA_PublicKey::DSA_PublicKey(Source& source) -{ - Initialize(source); -} - - -void DSA_PublicKey::Initialize(Source& source) -{ - DSA_Public_Decoder decoder(source); - decoder.Decode(*this); -} - - -void DSA_PublicKey::Initialize(const Integer& p, const Integer& q, - const Integer& g, const Integer& y) -{ - p_ = p; - q_ = q; - g_ = g; - y_ = y; -} - - -const Integer& DSA_PublicKey::GetModulus() const -{ - return p_; -} - -const Integer& DSA_PublicKey::GetSubGroupOrder() const -{ - return q_; -} - - -const Integer& DSA_PublicKey::GetSubGroupGenerator() const -{ - return g_; -} - - -const Integer& DSA_PublicKey::GetPublicPart() const -{ - return y_; -} - - -void DSA_PublicKey::SetModulus(const Integer& p) -{ - p_ = p; -} - - -void DSA_PublicKey::SetSubGroupOrder(const Integer& q) -{ - q_ = q; -} - - -void DSA_PublicKey::SetSubGroupGenerator(const Integer& g) -{ - g_ = g; -} - - -void DSA_PublicKey::SetPublicPart(const Integer& y) -{ - y_ = y; -} - - -word32 DSA_PublicKey::SignatureLength() const -{ - return GetSubGroupOrder().ByteCount() * 2; // r and s -} - - - -DSA_PrivateKey::DSA_PrivateKey(Source& source) -{ - Initialize(source); -} - - -void DSA_PrivateKey::Initialize(Source& source) -{ - DSA_Private_Decoder decoder(source); - decoder.Decode(*this); -} - - -void DSA_PrivateKey::Initialize(const Integer& p, const Integer& q, - const Integer& g, const Integer& y, - const Integer& x) -{ - DSA_PublicKey::Initialize(p, q, g, y); - x_ = x; -} - - -const Integer& DSA_PrivateKey::GetPrivatePart() const -{ - return x_; -} - - -void DSA_PrivateKey::SetPrivatePart(const Integer& x) -{ - x_ = x; -} - - -DSA_Signer::DSA_Signer(const DSA_PrivateKey& key) - : key_(key) -{} - - -word32 DSA_Signer::Sign(const byte* sha_digest, byte* sig, - RandomNumberGenerator& rng) -{ - const Integer& p = key_.GetModulus(); - const Integer& q = key_.GetSubGroupOrder(); - const Integer& g = key_.GetSubGroupGenerator(); - const Integer& x = key_.GetPrivatePart(); - byte* tmpPtr = sig; // initial signature output - - Integer k(rng, 1, q - 1); - - r_ = a_exp_b_mod_c(g, k, p); - r_ %= q; - - Integer H(sha_digest, SHA::DIGEST_SIZE); // sha Hash(m) - - Integer kInv = k.InverseMod(q); - s_ = (kInv * (H + x*r_)) % q; - - if (!(!!r_ && !!s_)) - return -1; - - int rSz = r_.ByteCount(); - int tmpSz = rSz; - - while (tmpSz++ < SHA::DIGEST_SIZE) { - *sig++ = 0; - } - - r_.Encode(sig, rSz); - - sig = tmpPtr + SHA::DIGEST_SIZE; // advance sig output to s - int sSz = s_.ByteCount(); - tmpSz = sSz; - - while (tmpSz++ < SHA::DIGEST_SIZE) { - *sig++ = 0; - } - - s_.Encode(sig, sSz); - - return 40; -} - - -DSA_Verifier::DSA_Verifier(const DSA_PublicKey& key) - : key_(key) -{} - - -bool DSA_Verifier::Verify(const byte* sha_digest, const byte* sig) -{ - const Integer& p = key_.GetModulus(); - const Integer& q = key_.GetSubGroupOrder(); - const Integer& g = key_.GetSubGroupGenerator(); - const Integer& y = key_.GetPublicPart(); - - int sz = q.ByteCount(); - - r_.Decode(sig, sz); - s_.Decode(sig + sz, sz); - - if (r_ >= q || r_ < 1 || s_ >= q || s_ < 1) - return false; - - Integer H(sha_digest, SHA::DIGEST_SIZE); // sha Hash(m) - - Integer w = s_.InverseMod(q); - Integer u1 = (H * w) % q; - Integer u2 = (r_ * w) % q; - - // verify r == ((g^u1 * y^u2) mod p) mod q - ModularArithmetic ma(p); - Integer v = ma.CascadeExponentiate(g, u1, y, u2); - v %= q; - - return r_ == v; -} - - - - -const Integer& DSA_Signer::GetR() const -{ - return r_; -} - - -const Integer& DSA_Signer::GetS() const -{ - return s_; -} - - -const Integer& DSA_Verifier::GetR() const -{ - return r_; -} - - -const Integer& DSA_Verifier::GetS() const -{ - return s_; -} - - -} // namespace |