1 files changed, 124 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/pubkey/sm2/sm2.h b/comm/third_party/botan/src/lib/pubkey/sm2/sm2.h
new file mode 100644
index 0000000000..7b5f38858b
--- /dev/null
+++ b/comm/third_party/botan/src/lib/pubkey/sm2/sm2.h
@@ -0,0 +1,124 @@
+/*
+* SM2
+* (C) 2017 Ribose Inc
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_SM2_KEY_H_
+#define BOTAN_SM2_KEY_H_
+
+#include <botan/ecc_key.h>
+
+namespace Botan {
+
+/**
+* This class represents SM2 public keys
+*/
+class BOTAN_PUBLIC_API(2,2) SM2_PublicKey : public virtual EC_PublicKey
+   {
+   public:
+
+      /**
+      * Create a public key from a given public point.
+      * @param dom_par the domain parameters associated with this key
+      * @param public_point the public point defining this key
+      */
+      SM2_PublicKey(const EC_Group& dom_par,
+                    const PointGFp& public_point) :
+         EC_PublicKey(dom_par, public_point) {}
+
+      /**
+      * Load a public key.
+      * @param alg_id the X.509 algorithm identifier
+      * @param key_bits DER encoded public key bits
+      */
+      SM2_PublicKey(const AlgorithmIdentifier& alg_id,
+                    const std::vector<uint8_t>& key_bits) :
+         EC_PublicKey(alg_id, key_bits) {}
+
+      /**
+      * Get this keys algorithm name.
+      * @result this keys algorithm name
+      */
+      std::string algo_name() const override;
+
+      size_t message_parts() const override { return 2; }
+
+      size_t message_part_size() const override
+         { return domain().get_order().bytes(); }
+
+      std::unique_ptr<PK_Ops::Verification>
+         create_verification_op(const std::string& params,
+                                const std::string& provider) const override;
+
+      std::unique_ptr<PK_Ops::Encryption>
+         create_encryption_op(RandomNumberGenerator& rng,
+                              const std::string& params,
+                              const std::string& provider) const override;
+
+   protected:
+      SM2_PublicKey() = default;
+   };
+
+/**
+* This class represents SM2 private keys
+*/
+class BOTAN_PUBLIC_API(2,2) SM2_PrivateKey final :
+   public SM2_PublicKey, public EC_PrivateKey
+   {
+   public:
+
+      /**
+      * Load a private key
+      * @param alg_id the X.509 algorithm identifier
+      * @param key_bits ECPrivateKey bits
+      */
+      SM2_PrivateKey(const AlgorithmIdentifier& alg_id,
+                     const secure_vector<uint8_t>& key_bits);
+
+      /**
+      * Create a private key.
+      * @param rng a random number generator
+      * @param domain parameters to used for this key
+      * @param x the private key (if zero, generate a new random key)
+      */
+      SM2_PrivateKey(RandomNumberGenerator& rng,
+                     const EC_Group& domain,
+                     const BigInt& x = 0);
+
+      bool check_key(RandomNumberGenerator& rng, bool) const override;
+
+      std::unique_ptr<PK_Ops::Signature>
+         create_signature_op(RandomNumberGenerator& rng,
+                             const std::string& params,
+                             const std::string& provider) const override;
+
+      std::unique_ptr<PK_Ops::Decryption>
+         create_decryption_op(RandomNumberGenerator& rng,
+                              const std::string& params,
+                              const std::string& provider) const override;
+
+      const BigInt& get_da_inv() const { return m_da_inv; }
+   private:
+      BigInt m_da_inv;
+   };
+
+class HashFunction;
+
+std::vector<uint8_t>
+BOTAN_PUBLIC_API(2,5) sm2_compute_za(HashFunction& hash,
+                                     const std::string& user_id,
+                                     const EC_Group& domain,
+                                     const PointGFp& pubkey);
+
+// For compat with versions 2.2 - 2.7
+typedef SM2_PublicKey SM2_Signature_PublicKey;
+typedef SM2_PublicKey SM2_Encryption_PublicKey;
+
+typedef SM2_PrivateKey SM2_Signature_PrivateKey;
+typedef SM2_PrivateKey SM2_Encryption_PrivateKey;
+
+}
+
+#endif