Add T::provider() to allow user to inquire about implementation used

For block ciphers, stream ciphers, hashes, MACs, and cipher modes.
Cipher_Mode already had it, with a slightly different usage.

2 files changed, 13 insertions, 0 deletions

diff --git a/src/lib/block/noekeon/noekeon.cpp b/src/lib/block/noekeon/noekeon.cpp
index 5e7c0229e..fbafe092e 100644
--- a/src/lib/block/noekeon/noekeon.cpp
+++ b/src/lib/block/noekeon/noekeon.cpp
@@ -73,6 +73,18 @@ inline void gamma(u32bit& A0, u32bit& A1, u32bit& A2, u32bit& A3)
 
 }
 
+const char* Noekeon::provider() const
+   {
+#if defined(BOTAN_HAS_NOEKEON_SIMD)
+   if(CPUID::has_simd_32())
+      {
+      return "simd";
+      }
+#endif
+
+   return "base";
+   }
+
 /*
 * Noekeon Round Constants
 */
diff --git a/src/lib/block/noekeon/noekeon.h b/src/lib/block/noekeon/noekeon.h
index 30c15a001..31069eb75 100644
--- a/src/lib/block/noekeon/noekeon.h
+++ b/src/lib/block/noekeon/noekeon.h
@@ -21,6 +21,7 @@ class BOTAN_DLL Noekeon final : public Block_Cipher_Fixed_Params<16, 16>
       void encrypt_n(const byte in[], byte out[], size_t blocks) const override;
       void decrypt_n(const byte in[], byte out[], size_t blocks) const override;
 
+      const char* provider() const override;
       void clear() override;
       std::string name() const override { return "Noekeon"; }
       BlockCipher* clone() const override { return new Noekeon; }