Index: head/devel/qca/files/patch-plugins_qca-ossl_qca-ossl.cpp
===================================================================
--- head/devel/qca/files/patch-plugins_qca-ossl_qca-ossl.cpp	(nonexistent)
+++ head/devel/qca/files/patch-plugins_qca-ossl_qca-ossl.cpp	(revision 530522)
@@ -0,0 +1,58 @@
+--- plugins/qca-ossl/qca-ossl.cpp.orig	2020-02-25 09:08:01 UTC
++++ plugins/qca-ossl/qca-ossl.cpp
+@@ -43,6 +43,10 @@
+ 
+ #include <openssl/kdf.h>
+ 
++#ifndef RSA_F_RSA_OSSL_PRIVATE_DECRYPT
++#define RSA_F_RSA_OSSL_PRIVATE_DECRYPT RSA_F_RSA_EAY_PRIVATE_DECRYPT
++#endif
++
+ using namespace QCA;
+ 
+ namespace opensslQCAPlugin {
+@@ -1272,6 +1276,7 @@ class opensslHkdfContext : public HKDFContext (public)
+ 						 const InitializationVector &info, unsigned int keyLength) override
+ 	{
+ 		SecureArray out(keyLength);
++#ifdef EVP_PKEY_HKDF
+ 		EVP_PKEY_CTX *pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_HKDF, nullptr);
+ 		EVP_PKEY_derive_init(pctx);
+ 		EVP_PKEY_CTX_set_hkdf_md(pctx, EVP_sha256());
+@@ -1281,6 +1286,36 @@ class opensslHkdfContext : public HKDFContext (public)
+ 		size_t outlen = out.size();
+ 		EVP_PKEY_derive(pctx, reinterpret_cast<unsigned char*>(out.data()), &outlen);
+ 		EVP_PKEY_CTX_free(pctx);
++#else
++		unsigned char prk[EVP_MAX_MD_SIZE];
++		unsigned char *ret;
++		unsigned int prk_len;
++		HMAC(EVP_sha256(), salt.data(), salt.size(), reinterpret_cast<const unsigned char*>(secret.data()), secret.size(), prk, &prk_len);
++		HMAC_CTX hmac;
++		unsigned char prev[EVP_MAX_MD_SIZE];
++		size_t done_len = 0;
++		size_t dig_len = EVP_MD_size(EVP_sha256());
++		size_t n = out.size() / dig_len;
++		if (out.size() % dig_len) ++n;
++		HMAC_CTX_init(&hmac);
++		HMAC_Init_ex(&hmac, prk, prk_len, EVP_sha256(), nullptr);
++		for (unsigned int i = 1; i <= n; ++i) {
++			const unsigned char ctr = i;
++			if (i > 1) {
++				HMAC_Init_ex(&hmac, nullptr, 0, nullptr, nullptr);
++				HMAC_Update(&hmac, prev, dig_len);
++			}
++			HMAC_Update(&hmac, reinterpret_cast<const unsigned char*>(info.data()), info.size());
++			HMAC_Update(&hmac, &ctr, 1);
++			HMAC_Final(&hmac, prev, nullptr);
++			size_t copy_len = (done_len + dig_len > out.size()) ?
++					out.size() - done_len : dig_len;
++			memcpy(reinterpret_cast<unsigned char *>(out.data()) + done_len, prev, copy_len);
++			done_len += copy_len;
++		}
++		HMAC_CTX_cleanup(&hmac);
++		OPENSSL_cleanse(prk, sizeof prk);
++#endif
+ 		return out;
+ 	}
+ };

Property changes on: head/devel/qca/files/patch-plugins_qca-ossl_qca-ossl.cpp
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