add "missing" functions to copy EVP_PKEY_METHOD and examine info

CHANGES

@@ -125,6 +125,9 @@
   
  Changes between 1.0.0b and 1.0.1  [xx XXX xxxx]
 
+  *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
+     [Steve Henson]
+
   *) Add EC_GFp_nistp224_method(), a 64-bit optimized implementation for
      elliptic curve NIST-P224 with constant-time single point multiplication on
      typical inputs.  EC_GROUP_new_by_curve_name() will automatically use this

crypto/evp/evp.h

@@ -1056,6 +1056,9 @@ void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth,
 
 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type);
 EVP_PKEY_METHOD* EVP_PKEY_meth_new(int id, int flags);
+void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
+				const EVP_PKEY_METHOD *meth);
+void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src);
 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth);
 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth);
 

crypto/evp/pmeth_lib.c

@@ -236,6 +236,56 @@ EVP_PKEY_METHOD* EVP_PKEY_meth_new(int id, int flags)
 	return pmeth;
 	}
 
+void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
+				const EVP_PKEY_METHOD *meth)
+	{
+	if (ppkey_id)
+		*ppkey_id = meth->pkey_id;
+	if (pflags)
+		*pflags = meth->flags;
+	}
+
+void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
+	{
+
+	dst->init = src->init;
+	dst->copy = src->copy;
+	dst->cleanup = src->cleanup;
+
+	dst->paramgen_init = src->paramgen_init;
+	dst->paramgen = src->paramgen;
+
+	dst->keygen_init = src->keygen_init;
+	dst->keygen = src->keygen;
+
+	dst->sign_init = src->sign_init;
+	dst->sign = src->sign;
+
+	dst->verify_init = src->verify_init;
+	dst->verify = src->verify;
+
+	dst->verify_recover_init = src->verify_recover_init;
+	dst->verify_recover = src->verify_recover;
+
+	dst->signctx_init = src->signctx_init;
+	dst->signctx = src->signctx;
+
+	dst->verifyctx_init = src->verifyctx_init;
+	dst->verifyctx = src->verifyctx;
+
+	dst->encrypt_init = src->encrypt_init;
+	dst->encrypt = src->encrypt;
+
+	dst->decrypt_init = src->decrypt_init;
+	dst->decrypt = src->decrypt;
+
+	dst->derive_init = src->derive_init;
+	dst->derive = src->derive;
+
+	dst->ctrl = src->ctrl;
+	dst->ctrl_str = src->ctrl_str;
+	}
+
 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 	{
 	if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))