10 #include <botan/internal/pk_ops_impl.h>
11 #include <botan/internal/point_mul.h>
12 #include <botan/loadstor.h>
13 #include <botan/numthry.h>
14 #include <botan/keypair.h>
15 #include <botan/hash.h>
16 #include <botan/parsing.h>
53 const std::string& user_id,
57 if(user_id.size() >= 8192)
60 const uint16_t uid_len =
static_cast<uint16_t
>(8 * user_id.size());
76 hash.
final(za.data());
86 class SM2_Signature_Operation
final :
public PK_Ops::Signature
90 SM2_Signature_Operation(
const SM2_PrivateKey& sm2,
91 const std::string& ident,
92 const std::string&
hash) :
94 m_x(sm2.private_value()),
110 size_t signature_length()
const override {
return 2*
m_group.get_order_bytes(); }
112 void update(
const uint8_t msg[],
size_t msg_len)
override
116 m_hash->update(msg, msg_len);
124 secure_vector<uint8_t> sign(RandomNumberGenerator& rng)
override;
137 secure_vector<uint8_t>
138 SM2_Signature_Operation::sign(RandomNumberGenerator& rng)
165 class SM2_Verification_Operation
final :
public PK_Ops::Verification
168 SM2_Verification_Operation(
const SM2_PublicKey& sm2,
169 const std::string& ident,
170 const std::string& hash) :
187 void update(
const uint8_t msg[],
size_t msg_len)
override
191 m_hash->update(msg, msg_len);
199 bool is_valid_signature(
const uint8_t sig[],
size_t sig_len)
override;
204 std::vector<uint8_t>
m_za;
205 std::unique_ptr<HashFunction>
m_hash;
208 bool SM2_Verification_Operation::is_valid_signature(
const uint8_t sig[],
size_t sig_len)
226 const BigInt r(sig, sig_len / 2);
227 const BigInt s(sig + sig_len / 2, sig_len / 2);
246 void parse_sm2_param_string(
const std::string& params,
251 const std::string default_userid =
"1234567812345678";
254 userid = default_userid;
263 auto comma = params.find(
',');
264 if(comma == std::string::npos)
270 userid = params.substr(0, comma);
271 hash = params.substr(comma+1, std::string::npos);
277 std::unique_ptr<PK_Ops::Verification>
279 const std::string& provider)
const
281 if(provider ==
"base" || provider.empty())
283 std::string userid,
hash;
284 parse_sm2_param_string(params, userid, hash);
285 return std::unique_ptr<PK_Ops::Verification>(
new SM2_Verification_Operation(*
this, userid, hash));
291 std::unique_ptr<PK_Ops::Signature>
293 const std::string& params,
294 const std::string& provider)
const
296 if(provider ==
"base" || provider.empty())
298 std::string userid,
hash;
299 parse_sm2_param_string(params, userid, hash);
300 return std::unique_ptr<PK_Ops::Signature>(
new SM2_Signature_Operation(*
this, userid, hash));
const BigInt & get_b() const
static std::unique_ptr< HashFunction > create_or_throw(const std::string &algo_spec, const std::string &provider="")
BigInt get_affine_y() const
const EC_Group & domain() const
const BigInt & get_a() const
int(* final)(unsigned char *, CTX *)
constexpr uint8_t get_byte(size_t byte_num, T input)
BigInt inverse_mod_order(const BigInt &x) const
std::vector< uint8_t > m_za
std::vector< BigInt > m_ws
std::vector< uint8_t > sm2_compute_za(HashFunction &hash, const std::string &user_id, const EC_Group &domain, const PointGFp &pubkey)
const BigInt & get_g_x() const
SM2_PrivateKey(const AlgorithmIdentifier &alg_id, const secure_vector< uint8_t > &key_bits)
BigInt multiply_mod_order(const BigInt &x, const BigInt &y) const
std::unique_ptr< PK_Ops::Verification > create_verification_op(const std::string ¶ms, const std::string &provider) const override
std::unique_ptr< HashFunction > m_hash
const PointGFp & public_point() const
BigInt get_affine_x() const
void final(uint8_t out[])
const BigInt & get_g_y() const
bool signature_consistency_check(RandomNumberGenerator &rng, const Private_Key &private_key, const Public_Key &public_key, const std::string &padding)
size_t get_p_bytes() const
std::vector< T, secure_allocator< T >> secure_vector
BigInt mod_order(const BigInt &x) const
const BigInt & get_order() const
std::string algo_name() const override
const PointGFp_Multi_Point_Precompute m_gy_mul
std::unique_ptr< PK_Ops::Signature > create_signature_op(RandomNumberGenerator &rng, const std::string ¶ms, const std::string &provider) const override
int(* update)(CTX *, const void *, CC_LONG len)
bool check_key(RandomNumberGenerator &rng, bool) const override
static BigInt decode(const uint8_t buf[], size_t length)
void update(const uint8_t in[], size_t length)
BigInt blinded_base_point_multiply_x(const BigInt &k, RandomNumberGenerator &rng, std::vector< BigInt > &ws) const
static secure_vector< uint8_t > encode_1363(const BigInt &n, size_t bytes)
static secure_vector< uint8_t > encode_fixed_length_int_pair(const BigInt &n1, const BigInt &n2, size_t bytes)
secure_vector< uint8_t > m_digest
PointGFp multi_exp(const BigInt &k1, const BigInt &k2) const
BigInt random_scalar(RandomNumberGenerator &rng) const
virtual size_t output_length() const =0