diff --git a/src/libcrypto-compat.c b/src/libcrypto-compat.c
deleted file mode 100644
index 33b8dffd..00000000
--- a/src/libcrypto-compat.c
+++ /dev/null
@@ -1,305 +0,0 @@
-/*
- * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
- *
- * Licensed under the OpenSSL license (the "License").  You may not use
- * this file except in compliance with the License.  You can obtain a copy
- * in the file LICENSE in the source distribution or at
- * https://www.openssl.org/source/license.html
- */
-
-#include "config.h"
-
-#include <string.h>
-#include "libcrypto-compat.h"
-
-int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d)
-{
-    /* If the fields n and e in r are NULL, the corresponding input
-     * parameters MUST be non-NULL for n and e.  d may be
-     * left NULL (in case only the public key is used).
-     */
-    if ((r->n == NULL && n == NULL)
-        || (r->e == NULL && e == NULL))
-        return 0;
-
-    if (n != NULL) {
-        BN_free(r->n);
-        r->n = n;
-    }
-    if (e != NULL) {
-        BN_free(r->e);
-        r->e = e;
-    }
-    if (d != NULL) {
-        BN_free(r->d);
-        r->d = d;
-    }
-
-    return 1;
-}
-
-int RSA_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q)
-{
-    /* If the fields p and q in r are NULL, the corresponding input
-     * parameters MUST be non-NULL.
-     */
-    if ((r->p == NULL && p == NULL)
-        || (r->q == NULL && q == NULL))
-        return 0;
-
-    if (p != NULL) {
-        BN_free(r->p);
-        r->p = p;
-    }
-    if (q != NULL) {
-        BN_free(r->q);
-        r->q = q;
-    }
-
-    return 1;
-}
-
-int RSA_set0_crt_params(RSA *r, BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp)
-{
-    /* If the fields dmp1, dmq1 and iqmp in r are NULL, the corresponding input
-     * parameters MUST be non-NULL.
-     */
-    if ((r->dmp1 == NULL && dmp1 == NULL)
-        || (r->dmq1 == NULL && dmq1 == NULL)
-        || (r->iqmp == NULL && iqmp == NULL))
-        return 0;
-
-    if (dmp1 != NULL) {
-        BN_free(r->dmp1);
-        r->dmp1 = dmp1;
-    }
-    if (dmq1 != NULL) {
-        BN_free(r->dmq1);
-        r->dmq1 = dmq1;
-    }
-    if (iqmp != NULL) {
-        BN_free(r->iqmp);
-        r->iqmp = iqmp;
-    }
-
-    return 1;
-}
-
-void RSA_get0_key(const RSA *r,
-                  const BIGNUM **n, const BIGNUM **e, const BIGNUM **d)
-{
-    if (n != NULL)
-        *n = r->n;
-    if (e != NULL)
-        *e = r->e;
-    if (d != NULL)
-        *d = r->d;
-}
-
-void RSA_get0_factors(const RSA *r, const BIGNUM **p, const BIGNUM **q)
-{
-    if (p != NULL)
-        *p = r->p;
-    if (q != NULL)
-        *q = r->q;
-}
-
-void RSA_get0_crt_params(const RSA *r,
-                         const BIGNUM **dmp1, const BIGNUM **dmq1,
-                         const BIGNUM **iqmp)
-{
-    if (dmp1 != NULL)
-        *dmp1 = r->dmp1;
-    if (dmq1 != NULL)
-        *dmq1 = r->dmq1;
-    if (iqmp != NULL)
-        *iqmp = r->iqmp;
-}
-
-void DSA_get0_pqg(const DSA *d,
-                  const BIGNUM **p, const BIGNUM **q, const BIGNUM **g)
-{
-    if (p != NULL)
-        *p = d->p;
-    if (q != NULL)
-        *q = d->q;
-    if (g != NULL)
-        *g = d->g;
-}
-
-int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g)
-{
-    /* If the fields p, q and g in d are NULL, the corresponding input
-     * parameters MUST be non-NULL.
-     */
-    if ((d->p == NULL && p == NULL)
-        || (d->q == NULL && q == NULL)
-        || (d->g == NULL && g == NULL))
-        return 0;
-
-    if (p != NULL) {
-        BN_free(d->p);
-        d->p = p;
-    }
-    if (q != NULL) {
-        BN_free(d->q);
-        d->q = q;
-    }
-    if (g != NULL) {
-        BN_free(d->g);
-        d->g = g;
-    }
-
-    return 1;
-}
-
-void DSA_get0_key(const DSA *d,
-                  const BIGNUM **pub_key, const BIGNUM **priv_key)
-{
-    if (pub_key != NULL)
-        *pub_key = d->pub_key;
-    if (priv_key != NULL)
-        *priv_key = d->priv_key;
-}
-
-int DSA_set0_key(DSA *d, BIGNUM *pub_key, BIGNUM *priv_key)
-{
-    /* If the field pub_key in d is NULL, the corresponding input
-     * parameters MUST be non-NULL.  The priv_key field may
-     * be left NULL.
-     */
-    if (d->pub_key == NULL && pub_key == NULL)
-        return 0;
-
-    if (pub_key != NULL) {
-        BN_free(d->pub_key);
-        d->pub_key = pub_key;
-    }
-    if (priv_key != NULL) {
-        BN_free(d->priv_key);
-        d->priv_key = priv_key;
-    }
-
-    return 1;
-}
-
-void DSA_SIG_get0(const DSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps)
-{
-    if (pr != NULL)
-        *pr = sig->r;
-    if (ps != NULL)
-        *ps = sig->s;
-}
-
-int DSA_SIG_set0(DSA_SIG *sig, BIGNUM *r, BIGNUM *s)
-{
-    if (r == NULL || s == NULL)
-        return 0;
-    BN_clear_free(sig->r);
-    BN_clear_free(sig->s);
-    sig->r = r;
-    sig->s = s;
-    return 1;
-}
-
-void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps)
-{
-    if (pr != NULL)
-        *pr = sig->r;
-    if (ps != NULL)
-        *ps = sig->s;
-}
-
-int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s)
-{
-    if (r == NULL || s == NULL)
-        return 0;
-    BN_clear_free(sig->r);
-    BN_clear_free(sig->s);
-    sig->r = r;
-    sig->s = s;
-    return 1;
-}
-
-EVP_MD_CTX *EVP_MD_CTX_new(void)
-{
-    EVP_MD_CTX *ctx = OPENSSL_malloc(sizeof(EVP_MD_CTX));
-    if (ctx != NULL) {
-        EVP_MD_CTX_init(ctx);
-    }
-    return ctx;
-}
-
-void EVP_MD_CTX_free(EVP_MD_CTX *ctx)
-{
-    EVP_MD_CTX_cleanup(ctx);
-    OPENSSL_free(ctx);
-}
-
-void DH_get0_pqg(const DH *dh,
-                 const BIGNUM **p, const BIGNUM **q, const BIGNUM **g)
-{
-    if (p) {
-        *p = dh->p;
-    }
-    if (q) {
-        *q = NULL;
-    }
-    if (g) {
-        *g = dh->g;
-    }
-}
-
-int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g)
-{
-    if (p) {
-        if (dh->p) {
-            BN_free(dh->p);
-        }
-        dh->p = p;
-    }
-    if (g) {
-        if (dh->g) {
-            BN_free(dh->g);
-        }
-        dh->g = g;
-    }
-    return 1;
-}
-
-void DH_get0_key(const DH *dh,
-                 const BIGNUM **pub_key, const BIGNUM **priv_key)
-{
-    if (pub_key) {
-        *pub_key = dh->pub_key;
-    }
-    if (priv_key) {
-        *priv_key = dh->priv_key;
-    }
-}
-
-int DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key)
-{
-    if (pub_key) {
-        if (dh->pub_key) {
-            BN_free(dh->pub_key);
-        }
-        dh->pub_key = pub_key;
-    }
-    if (priv_key) {
-        if (dh->priv_key) {
-            BN_free(dh->priv_key);
-        }
-        dh->priv_key = priv_key;
-    }
-    return 1;
-}
-
-const char *OpenSSL_version(int type)
-{
-    return SSLeay_version(type);
-}
-unsigned long OpenSSL_version_num(void)
-{
-    return SSLeay();
-}
diff --git a/src/libcrypto-compat.h b/src/libcrypto-compat.h
index 48e30bd1..e8dec368 100644
--- a/src/libcrypto-compat.h
+++ b/src/libcrypto-compat.h
@@ -7,47 +7,4 @@
 #define NISTP384 "P-384"
 #define NISTP521 "P-521"
 
-#if OPENSSL_VERSION_NUMBER < 0x10100000L
-
-#include <openssl/rsa.h>
-#include <openssl/dsa.h>
-#include <openssl/ecdsa.h>
-#include <openssl/dh.h>
-#include <openssl/evp.h>
-#include <openssl/hmac.h>
-#include <openssl/bn.h>
-
-int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d);
-int RSA_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q);
-int RSA_set0_crt_params(RSA *r, BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp);
-void RSA_get0_key(const RSA *r, const BIGNUM **n, const BIGNUM **e, const BIGNUM **d);
-void RSA_get0_factors(const RSA *r, const BIGNUM **p, const BIGNUM **q);
-void RSA_get0_crt_params(const RSA *r, const BIGNUM **dmp1, const BIGNUM **dmq1, const BIGNUM **iqmp);
-
-void DSA_get0_pqg(const DSA *d, const BIGNUM **p, const BIGNUM **q, const BIGNUM **g);
-int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g);
-void DSA_get0_key(const DSA *d, const BIGNUM **pub_key, const BIGNUM **priv_key);
-int DSA_set0_key(DSA *d, BIGNUM *pub_key, BIGNUM *priv_key);
-
-void DSA_SIG_get0(const DSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps);
-int DSA_SIG_set0(DSA_SIG *sig, BIGNUM *r, BIGNUM *s);
-
-void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps);
-int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s);
-
-EVP_MD_CTX *EVP_MD_CTX_new(void);
-void EVP_MD_CTX_free(EVP_MD_CTX *ctx);
-
-void DH_get0_pqg(const DH *dh,
-                 const BIGNUM **p, const BIGNUM **q, const BIGNUM **g);
-int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g);
-void DH_get0_key(const DH *dh,
-                 const BIGNUM **pub_key, const BIGNUM **priv_key);
-int DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key);
-
-const char *OpenSSL_version(int type);
-unsigned long OpenSSL_version_num(void);
-
-#endif /* OPENSSL_VERSION_NUMBER */
-
 #endif /* LIBCRYPTO_COMPAT_H */