1 files changed, 118 insertions, 0 deletions
diff --git a/src/lib/pubkey/ed25519/ed25519.h b/src/lib/pubkey/ed25519/ed25519.h
new file mode 100644
index 000000000..f098517a0
--- /dev/null
+++ b/src/lib/pubkey/ed25519/ed25519.h
@@ -0,0 +1,118 @@
+/*
+* Ed25519
+* (C) 2017 Ribose Inc
+*
+* Based on the public domain code from SUPERCOP ref10 by
+* Peter Schwabe, Daniel J. Bernstein, Niels Duif, Tanja Lange, Bo-Yin Yang
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_ED25519_H__
+#define BOTAN_ED25519_H__
+
+#include <botan/pk_keys.h>
+
+namespace Botan {
+
+class BOTAN_DLL Ed25519_PublicKey : public virtual Public_Key
+   {
+   public:
+      std::string algo_name() const override { return "Ed25519"; }
+
+      size_t estimated_strength() const override { return 128; }
+
+      size_t key_length() const override { return 255; }
+
+      bool check_key(RandomNumberGenerator& rng, bool strong) const override;
+
+      AlgorithmIdentifier algorithm_identifier() const override;
+
+      std::vector<uint8_t> public_key_bits() const override;
+
+      /**
+      * Create a Ed25519 Public Key.
+      * @param alg_id the X.509 algorithm identifier
+      * @param key_bits DER encoded public key bits
+      */
+      Ed25519_PublicKey(const AlgorithmIdentifier& alg_id,
+                        const std::vector<uint8_t>& key_bits);
+
+      /**
+      * Create a Ed25519 Public Key.
+      * @param pub 32-byte raw public key
+      */
+      explicit Ed25519_PublicKey(const std::vector<uint8_t>& pub) : m_public(pub) {}
+
+      /**
+      * Create a Ed25519 Public Key.
+      * @param pub 32-byte raw public key
+      */
+      explicit Ed25519_PublicKey(const secure_vector<uint8_t>& pub) :
+         m_public(pub.begin(), pub.end()) {}
+
+      std::unique_ptr<PK_Ops::Verification>
+         create_verification_op(const std::string& params,
+                                const std::string& provider) const override;
+
+      const std::vector<uint8_t>& get_public_key() const { return m_public; }
+
+   protected:
+      Ed25519_PublicKey() = default;
+      std::vector<uint8_t> m_public;
+   };
+
+class BOTAN_DLL Ed25519_PrivateKey : public Ed25519_PublicKey,
+                                     public virtual Private_Key
+   {
+   public:
+      /**
+      * Construct a private key from the specified parameters.
+      * @param alg_id the X.509 algorithm identifier
+      * @param key_bits PKCS #8 structure
+      */
+      Ed25519_PrivateKey(const AlgorithmIdentifier& alg_id,
+                         const secure_vector<uint8_t>& key_bits);
+
+      /**
+      * Generate a private key.
+      * @param rng the RNG to use
+      */
+      explicit Ed25519_PrivateKey(RandomNumberGenerator& rng);
+
+      /**
+      * Construct a private key from the specified parameters.
+      * @param secret_key DER encoded private key bits
+      */
+      explicit Ed25519_PrivateKey(const secure_vector<uint8_t>& secret_key);
+
+      const secure_vector<uint8_t>& get_private_key() const { return m_private; }
+
+      secure_vector<uint8_t> private_key_bits() const override;
+
+      bool check_key(RandomNumberGenerator& rng, bool strong) const override;
+
+      std::unique_ptr<PK_Ops::Signature>
+         create_signature_op(RandomNumberGenerator& rng,
+                             const std::string& params,
+                             const std::string& provider) const override;
+
+   private:
+      secure_vector<uint8_t> m_private;
+   };
+
+void ed25519_gen_keypair(uint8_t pk[32], uint8_t sk[64], const uint8_t seed[32]);
+
+void ed25519_sign(uint8_t sig[64],
+                  const uint8_t msg[],
+                  size_t msg_len,
+                  const uint8_t sk[64]);
+
+bool ed25519_verify(const uint8_t msg[],
+                    size_t msg_len,
+                    const uint8_t sig[64],
+                    const uint8_t pk[32]);
+
+}
+
+#endif