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.

3 files changed, 4 insertions, 0 deletions

diff --git a/src/lib/prov/openssl/openssl_block.cpp b/src/lib/prov/openssl/openssl_block.cpp
index c868e8977..d09fdb82b 100644
--- a/src/lib/prov/openssl/openssl_block.cpp
+++ b/src/lib/prov/openssl/openssl_block.cpp
@@ -25,6 +25,7 @@ class OpenSSL_BlockCipher : public BlockCipher
       ~OpenSSL_BlockCipher();
 
       void clear() override;
+      const char* provider() const override { return "openssl"; }
       std::string name() const override { return m_cipher_name; }
       BlockCipher* clone() const override;
 
diff --git a/src/lib/prov/openssl/openssl_hash.cpp b/src/lib/prov/openssl/openssl_hash.cpp
index c14c551e4..fa31d36c8 100644
--- a/src/lib/prov/openssl/openssl_hash.cpp
+++ b/src/lib/prov/openssl/openssl_hash.cpp
@@ -23,6 +23,7 @@ class OpenSSL_HashFunction : public HashFunction
          EVP_DigestInit_ex(&m_md, algo, nullptr);
          }
 
+      const char* provider() const override { return "openssl"; }
       std::string name() const override { return m_name; }
 
       HashFunction* clone() const override
diff --git a/src/lib/prov/openssl/openssl_rc4.cpp b/src/lib/prov/openssl/openssl_rc4.cpp
index d6246e4ab..50148f09a 100644
--- a/src/lib/prov/openssl/openssl_rc4.cpp
+++ b/src/lib/prov/openssl/openssl_rc4.cpp
@@ -24,6 +24,8 @@ class OpenSSL_RC4 : public StreamCipher
    public:
       void clear() override { clear_mem(&m_rc4, 1); }
 
+      const char* provider() const override { return "openssl"; }
+
       std::string name() const override
          {
          switch(m_skip)