1 files changed, 118 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/pbkdf/argon2/argon2.h b/comm/third_party/botan/src/lib/pbkdf/argon2/argon2.h
new file mode 100644
index 0000000000..3a1b859f0c
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+++ b/comm/third_party/botan/src/lib/pbkdf/argon2/argon2.h
@@ -0,0 +1,118 @@
+/**
+* (C) 2018,2019 Jack Lloyd
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_ARGON2_H_
+#define BOTAN_ARGON2_H_
+
+#include <botan/pwdhash.h>
+
+//BOTAN_FUTURE_INTERNAL_HEADER(argon2.h)
+
+namespace Botan {
+
+class RandomNumberGenerator;
+
+/**
+* Argon2 key derivation function
+*/
+class BOTAN_PUBLIC_API(2,11) Argon2 final : public PasswordHash
+   {
+   public:
+      Argon2(uint8_t family, size_t M, size_t t, size_t p);
+
+      Argon2(const Argon2& other) = default;
+      Argon2& operator=(const Argon2&) = default;
+
+      /**
+      * Derive a new key under the current Argon2 parameter set
+      */
+      void derive_key(uint8_t out[], size_t out_len,
+                      const char* password, size_t password_len,
+                      const uint8_t salt[], size_t salt_len) const override;
+
+      std::string to_string() const override;
+
+      size_t M() const { return m_M; }
+      size_t t() const { return m_t; }
+      size_t p() const { return m_p; }
+
+      size_t iterations() const override { return t(); }
+
+      size_t parallelism() const override { return p(); }
+
+      size_t memory_param() const override { return M(); }
+
+      size_t total_memory_usage() const override { return M() * 1024; }
+
+   private:
+      uint8_t m_family;
+      size_t m_M, m_t, m_p;
+   };
+
+class BOTAN_PUBLIC_API(2,11) Argon2_Family final : public PasswordHashFamily
+   {
+   public:
+      Argon2_Family(uint8_t family);
+
+      std::string name() const override;
+
+      std::unique_ptr<PasswordHash> tune(size_t output_length,
+                                         std::chrono::milliseconds msec,
+                                         size_t max_memory) const override;
+
+      std::unique_ptr<PasswordHash> default_params() const override;
+
+      std::unique_ptr<PasswordHash> from_iterations(size_t iter) const override;
+
+      std::unique_ptr<PasswordHash> from_params(
+         size_t M, size_t t, size_t p) const override;
+   private:
+      const uint8_t m_family;
+   };
+
+/**
+* Argon2 key derivation function
+*
+* @param output the output will be placed here
+* @param output_len length of output
+* @param password the user password
+* @param password_len the length of password
+* @param salt the salt
+* @param salt_len length of salt
+* @param key an optional secret key
+* @param key_len the length of key
+* @param ad an optional additional input
+* @param ad_len the length of ad
+* @param y the Argon2 variant (0 = Argon2d, 1 = Argon2i, 2 = Argon2id)
+* @param p the parallelization parameter
+* @param M the amount of memory to use in Kb
+* @param t the number of iterations to use
+*/
+void BOTAN_PUBLIC_API(2,11) argon2(uint8_t output[], size_t output_len,
+                                   const char* password, size_t password_len,
+                                   const uint8_t salt[], size_t salt_len,
+                                   const uint8_t key[], size_t key_len,
+                                   const uint8_t ad[], size_t ad_len,
+                                   uint8_t y, size_t p, size_t M, size_t t);
+
+std::string BOTAN_PUBLIC_API(2,11)
+   argon2_generate_pwhash(const char* password, size_t password_len,
+                          RandomNumberGenerator& rng,
+                          size_t p, size_t M, size_t t,
+                          uint8_t y = 2, size_t salt_len = 16, size_t output_len = 32);
+
+/**
+* Check a previously created password hash
+* @param password the password to check against
+* @param password_len the length of password
+* @param hash the stored hash to check against
+*/
+bool BOTAN_PUBLIC_API(2,11) argon2_check_pwhash(const char* password, size_t password_len,
+                                                const std::string& hash);
+
+}
+
+#endif