diff --git a/Crypto.h b/Crypto.h
index 4408a193..8f2a4a38 100644
--- a/Crypto.h
+++ b/Crypto.h
@@ -7,6 +7,7 @@
 #include <openssl/dh.h>
 #include <openssl/aes.h>
 #include <openssl/dsa.h>
+#include <openssl/rsa.h>
 #include <openssl/sha.h>
 #include <openssl/rand.h>
 
@@ -282,10 +283,23 @@ namespace crypto
 
 // take care about openssl version
 #include <openssl/opensslv.h>
-#if (OPENSSL_VERSION_NUMBER < 0x010100000) || defined(LIBRESSL_VERSION_NUMBER) // 1.1.0 or LibreSSL
+#if !(OPENSSL_VERSION_NUMBER >= 0x010100000) //  < 1.1.0 or non-OpenSSL
 // define getters and setters introduced in 1.1.0
-inline int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g) { d->p = p; d->q = q; d->g = g; return 1; }
-inline int DSA_set0_key(DSA *d, BIGNUM *pub_key, BIGNUM *priv_key) { d->pub_key = pub_key; d->priv_key = priv_key; return 1; } 
+inline int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g) 
+	{ d->p = p; d->q = q; d->g = g; return 1; }
+inline int DSA_set0_key(DSA *d, BIGNUM *pub_key, BIGNUM *priv_key) 
+	{ d->pub_key = pub_key; d->priv_key = priv_key; return 1; } 
+inline void DSA_get0_key(const DSA *d, const BIGNUM **pub_key, const BIGNUM **priv_key) 
+	{ *pub_key = d->pub_key; *priv_key = d->priv_key; }
+inline int DSA_SIG_set0(DSA_SIG *sig, BIGNUM *r, BIGNUM *s) 
+	{ sig->r = r; sig->s = s; return 1; }
+inline void DSA_SIG_get0(const DSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps) 
+	{ *pr = sig->r; *ps = sig->s; }
+
+inline int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d) 
+	{ r->n = n; r->e = e; r->d = d; return 1; }
+inline void RSA_get0_key(const RSA *r, const BIGNUM **n, const BIGNUM **e, const BIGNUM **d)
+	{ *n = r->n; *e = r->e; *d = r->d; }
 
 #endif
 
diff --git a/Signature.h b/Signature.h
index 5934f8d2..df9d8d33 100644
--- a/Signature.h
+++ b/Signature.h
@@ -43,7 +43,7 @@ namespace crypto
 			DSAVerifier (const uint8_t * signingKey)
 			{
 				m_PublicKey = CreateDSA ();
-				m_PublicKey->pub_key = BN_bin2bn (signingKey, DSA_PUBLIC_KEY_LENGTH, NULL);
+				DSA_set0_key (m_PublicKey, BN_bin2bn (signingKey, DSA_PUBLIC_KEY_LENGTH, NULL), NULL);
 			}
 
 			~DSAVerifier ()
@@ -58,8 +58,7 @@ namespace crypto
 				SHA1 (buf, len, digest);
 				// signature
 				DSA_SIG * sig = DSA_SIG_new();
-				sig->r = BN_bin2bn (signature, DSA_SIGNATURE_LENGTH/2, NULL);
-				sig->s = BN_bin2bn (signature + DSA_SIGNATURE_LENGTH/2, DSA_SIGNATURE_LENGTH/2, NULL);
+				DSA_SIG_set0 (sig, BN_bin2bn (signature, DSA_SIGNATURE_LENGTH/2, NULL), BN_bin2bn (signature + DSA_SIGNATURE_LENGTH/2, DSA_SIGNATURE_LENGTH/2, NULL));
 				// DSA verification
 				int ret = DSA_do_verify (digest, 20, sig, m_PublicKey);
 				DSA_SIG_free(sig);
@@ -81,7 +80,7 @@ namespace crypto
 			DSASigner (const uint8_t * signingPrivateKey)
 			{
 				m_PrivateKey = CreateDSA ();
-				m_PrivateKey->priv_key = BN_bin2bn (signingPrivateKey, DSA_PRIVATE_KEY_LENGTH, NULL);
+				DSA_set0_key (m_PrivateKey, NULL, BN_bin2bn (signingPrivateKey, DSA_PRIVATE_KEY_LENGTH, NULL));
 			}
 
 			~DSASigner ()
@@ -94,8 +93,10 @@ namespace crypto
 				uint8_t digest[20];
 				SHA1 (buf, len, digest);
 				DSA_SIG * sig = DSA_do_sign (digest, 20, m_PrivateKey);
-				bn2buf (sig->r, signature, DSA_SIGNATURE_LENGTH/2);
-				bn2buf (sig->s, signature + DSA_SIGNATURE_LENGTH/2, DSA_SIGNATURE_LENGTH/2);
+				const BIGNUM * r, * s;
+				DSA_SIG_get0 (sig, &r, &s);
+				bn2buf (r, signature, DSA_SIGNATURE_LENGTH/2);
+				bn2buf (s, signature + DSA_SIGNATURE_LENGTH/2, DSA_SIGNATURE_LENGTH/2);
 				DSA_SIG_free(sig);
 			}
 
@@ -108,10 +109,11 @@ namespace crypto
 	{
 		DSA * dsa = CreateDSA ();
 		DSA_generate_key (dsa);
-		bn2buf (dsa->priv_key, signingPrivateKey, DSA_PRIVATE_KEY_LENGTH);
-		bn2buf (dsa->pub_key, signingPublicKey, DSA_PUBLIC_KEY_LENGTH);
-		DSA_free (dsa);
-		
+		const BIGNUM * pub_key, * priv_key;
+		DSA_get0_key(dsa, &pub_key, &priv_key);
+		bn2buf (priv_key, signingPrivateKey, DSA_PRIVATE_KEY_LENGTH);
+		bn2buf (pub_key, signingPublicKey, DSA_PUBLIC_KEY_LENGTH);
+		DSA_free (dsa);	
 	}	
 
 	struct SHA256Hash
@@ -270,8 +272,7 @@ namespace crypto
 			{
 				m_PublicKey = RSA_new ();
 				memset (m_PublicKey, 0, sizeof (RSA));
-				m_PublicKey->e = BN_dup (GetRSAE ());
-				m_PublicKey->n = BN_bin2bn (signingKey, keyLen, NULL);
+				RSA_set0_key (m_PublicKey, BN_bin2bn (signingKey, keyLen, NULL) /* n */ , BN_dup (GetRSAE ()) /* d */, NULL);
 			}
 
 			~RSAVerifier ()
@@ -304,9 +305,8 @@ namespace crypto
 			{
 				m_PrivateKey = RSA_new ();
 				memset (m_PrivateKey, 0, sizeof (RSA));
-				m_PrivateKey->e = BN_dup (GetRSAE ());
-				m_PrivateKey->n = BN_bin2bn (signingPrivateKey, keyLen, NULL);
-				m_PrivateKey->d = BN_bin2bn (signingPrivateKey + keyLen, keyLen, NULL);
+				RSA_set0_key (m_PrivateKey, BN_bin2bn (signingPrivateKey, keyLen, NULL), /* n */
+					BN_dup (GetRSAE ()) /* e */, BN_bin2bn (signingPrivateKey + keyLen, keyLen, NULL) /* d */);
 			}
 
 			~RSASigner ()
@@ -332,9 +332,11 @@ namespace crypto
 		RSA * rsa = RSA_new ();
 		BIGNUM * e = BN_dup (GetRSAE ()); // make it non-const
 		RSA_generate_key_ex (rsa, publicKeyLen*8, e, NULL);
-		bn2buf (rsa->n, signingPrivateKey, publicKeyLen);
-		bn2buf (rsa->d, signingPrivateKey + publicKeyLen, publicKeyLen);
-		bn2buf (rsa->n, signingPublicKey, publicKeyLen);
+		const BIGNUM * n, * d, * e1;
+		RSA_get0_key (rsa, &n, &e1, &d);	
+		bn2buf (n, signingPrivateKey, publicKeyLen);
+		bn2buf (d, signingPrivateKey + publicKeyLen, publicKeyLen);
+		bn2buf (n, signingPublicKey, publicKeyLen);
 		BN_free (e); // this e is not assigned to rsa->e
 		RSA_free (rsa);
 	}