--- src/_cffi_src/openssl/crypto.py.orig	2021-08-24 17:02:37 UTC
+++ src/_cffi_src/openssl/crypto.py
@@ -74,11 +74,8 @@ CUSTOMIZATIONS = """
 # define OPENSSL_DIR             SSLEAY_DIR
 #endif
 
+static const long Cryptography_HAS_OPENSSL_CLEANUP = 1;
 #if CRYPTOGRAPHY_IS_LIBRESSL
-static const long Cryptography_HAS_OPENSSL_CLEANUP = 0;
-
-void (*OPENSSL_cleanup)(void) = NULL;
-
 /* This function has a significantly different signature pre-1.1.0. since it is
  * for testing only, we don't bother to expose it on older OpenSSLs.
  */
@@ -89,7 +86,6 @@ int (*Cryptography_CRYPTO_set_mem_functions)(
     void (*)(void *, const char *, int)) = NULL;
 
 #else
-static const long Cryptography_HAS_OPENSSL_CLEANUP = 1;
 static const long Cryptography_HAS_MEM_FUNCTIONS = 1;
 
 int Cryptography_CRYPTO_set_mem_functions(
--- src/_cffi_src/openssl/cryptography.py.orig	2021-08-24 17:17:17 UTC
+++ src/_cffi_src/openssl/cryptography.py
@@ -33,17 +33,17 @@ INCLUDES = """
 #endif
 
 #define CRYPTOGRAPHY_OPENSSL_110F_OR_GREATER \
-    (OPENSSL_VERSION_NUMBER >= 0x1010006f && !CRYPTOGRAPHY_IS_LIBRESSL)
+    OPENSSL_VERSION_NUMBER >= 0x1010006f
 
 #define CRYPTOGRAPHY_OPENSSL_LESS_THAN_110J \
-    (OPENSSL_VERSION_NUMBER < 0x101000af || CRYPTOGRAPHY_IS_LIBRESSL)
+    OPENSSL_VERSION_NUMBER < 0x101000af
 #define CRYPTOGRAPHY_OPENSSL_LESS_THAN_111 \
-    (OPENSSL_VERSION_NUMBER < 0x10101000 || CRYPTOGRAPHY_IS_LIBRESSL)
+    OPENSSL_VERSION_NUMBER < 0x10101000
 #define CRYPTOGRAPHY_OPENSSL_LESS_THAN_111B \
-    (OPENSSL_VERSION_NUMBER < 0x10101020 || CRYPTOGRAPHY_IS_LIBRESSL)
+    OPENSSL_VERSION_NUMBER < 0x10101020
 #define CRYPTOGRAPHY_OPENSSL_LESS_THAN_111D \
-    (OPENSSL_VERSION_NUMBER < 0x10101040 || CRYPTOGRAPHY_IS_LIBRESSL)
-#if (CRYPTOGRAPHY_OPENSSL_LESS_THAN_111D && !CRYPTOGRAPHY_IS_LIBRESSL && \
+    OPENSSL_VERSION_NUMBER < 0x10101040
+#if (CRYPTOGRAPHY_OPENSSL_LESS_THAN_111D && \
     !defined(OPENSSL_NO_ENGINE)) || defined(USE_OSRANDOM_RNG_FOR_TESTING)
 #define CRYPTOGRAPHY_NEEDS_OSRANDOM_ENGINE 1
 #else
--- src/_cffi_src/openssl/dh.py.orig	2021-08-24 17:17:17 UTC
+++ src/_cffi_src/openssl/dh.py
@@ -37,117 +37,9 @@ CUSTOMIZATIONS = """
 """
 
 CUSTOMIZATIONS = """
-#if CRYPTOGRAPHY_IS_LIBRESSL
-#ifndef DH_CHECK_Q_NOT_PRIME
-#define DH_CHECK_Q_NOT_PRIME            0x10
-#endif
-
-#ifndef DH_CHECK_INVALID_Q_VALUE
-#define DH_CHECK_INVALID_Q_VALUE        0x20
-#endif
-
-#ifndef DH_CHECK_INVALID_J_VALUE
-#define DH_CHECK_INVALID_J_VALUE        0x40
-#endif
-
-/* DH_check implementation taken from OpenSSL 1.1.0pre6 */
-
-/*-
- * Check that p is a safe prime and
- * if g is 2, 3 or 5, check that it is a suitable generator
- * where
- * for 2, p mod 24 == 11
- * for 3, p mod 12 == 5
- * for 5, p mod 10 == 3 or 7
- * should hold.
- */
-
-int Cryptography_DH_check(const DH *dh, int *ret)
-{
-    int ok = 0, r;
-    BN_CTX *ctx = NULL;
-    BN_ULONG l;
-    BIGNUM *t1 = NULL, *t2 = NULL;
-
-    *ret = 0;
-    ctx = BN_CTX_new();
-    if (ctx == NULL)
-        goto err;
-    BN_CTX_start(ctx);
-    t1 = BN_CTX_get(ctx);
-    if (t1 == NULL)
-        goto err;
-    t2 = BN_CTX_get(ctx);
-    if (t2 == NULL)
-        goto err;
-
-    if (dh->q) {
-        if (BN_cmp(dh->g, BN_value_one()) <= 0)
-            *ret |= DH_NOT_SUITABLE_GENERATOR;
-        else if (BN_cmp(dh->g, dh->p) >= 0)
-            *ret |= DH_NOT_SUITABLE_GENERATOR;
-        else {
-            /* Check g^q == 1 mod p */
-            if (!BN_mod_exp(t1, dh->g, dh->q, dh->p, ctx))
-                goto err;
-            if (!BN_is_one(t1))
-                *ret |= DH_NOT_SUITABLE_GENERATOR;
-        }
-        r = BN_is_prime_ex(dh->q, BN_prime_checks, ctx, NULL);
-        if (r < 0)
-            goto err;
-        if (!r)
-            *ret |= DH_CHECK_Q_NOT_PRIME;
-        /* Check p == 1 mod q  i.e. q divides p - 1 */
-        if (!BN_div(t1, t2, dh->p, dh->q, ctx))
-            goto err;
-        if (!BN_is_one(t2))
-            *ret |= DH_CHECK_INVALID_Q_VALUE;
-        if (dh->j && BN_cmp(dh->j, t1))
-            *ret |= DH_CHECK_INVALID_J_VALUE;
-
-    } else if (BN_is_word(dh->g, DH_GENERATOR_2)) {
-        l = BN_mod_word(dh->p, 24);
-        if (l == (BN_ULONG)-1)
-            goto err;
-        if (l != 11)
-            *ret |= DH_NOT_SUITABLE_GENERATOR;
-    } else if (BN_is_word(dh->g, DH_GENERATOR_5)) {
-        l = BN_mod_word(dh->p, 10);
-        if (l == (BN_ULONG)-1)
-            goto err;
-        if ((l != 3) && (l != 7))
-            *ret |= DH_NOT_SUITABLE_GENERATOR;
-    } else
-        *ret |= DH_UNABLE_TO_CHECK_GENERATOR;
-
-    r = BN_is_prime_ex(dh->p, BN_prime_checks, ctx, NULL);
-    if (r < 0)
-        goto err;
-    if (!r)
-        *ret |= DH_CHECK_P_NOT_PRIME;
-    else if (!dh->q) {
-        if (!BN_rshift1(t1, dh->p))
-            goto err;
-        r = BN_is_prime_ex(t1, BN_prime_checks, ctx, NULL);
-        if (r < 0)
-            goto err;
-        if (!r)
-            *ret |= DH_CHECK_P_NOT_SAFE_PRIME;
-    }
-    ok = 1;
- err:
-    if (ctx != NULL) {
-        BN_CTX_end(ctx);
-        BN_CTX_free(ctx);
-    }
-    return (ok);
-}
-#else
 int Cryptography_DH_check(const DH *dh, int *ret) {
     return DH_check(dh, ret);
 }
-#endif
 
 /* These functions were added in OpenSSL 1.1.0f commit d0c50e80a8 */
 /* Define our own to simplify support across all versions. */
--- src/_cffi_src/openssl/fips.py.orig	2021-08-24 17:17:17 UTC
+++ src/_cffi_src/openssl/fips.py
@@ -12,16 +12,8 @@ FUNCTIONS = """
 """
 
 FUNCTIONS = """
-int FIPS_mode_set(int);
-int FIPS_mode(void);
 """
 
 CUSTOMIZATIONS = """
-#if CRYPTOGRAPHY_IS_LIBRESSL
 static const long Cryptography_HAS_FIPS = 0;
-int (*FIPS_mode_set)(int) = NULL;
-int (*FIPS_mode)(void) = NULL;
-#else
-static const long Cryptography_HAS_FIPS = 1;
-#endif
 """
--- src/_cffi_src/openssl/ocsp.py.orig	2021-08-24 17:17:17 UTC
+++ src/_cffi_src/openssl/ocsp.py
@@ -77,7 +77,6 @@ CUSTOMIZATIONS = """
 
 CUSTOMIZATIONS = """
 #if ( \
-    !CRYPTOGRAPHY_IS_LIBRESSL && \
     CRYPTOGRAPHY_OPENSSL_LESS_THAN_110J \
     )
 /* These structs come from ocsp_lcl.h and are needed to de-opaque the struct
@@ -104,62 +103,15 @@ struct ocsp_basic_response_st {
 };
 #endif
 
-#if CRYPTOGRAPHY_IS_LIBRESSL
-/* These functions are all taken from ocsp_cl.c in OpenSSL 1.1.0 */
-const OCSP_CERTID *OCSP_SINGLERESP_get0_id(const OCSP_SINGLERESP *single)
-{
-    return single->certId;
-}
-const Cryptography_STACK_OF_X509 *OCSP_resp_get0_certs(
-    const OCSP_BASICRESP *bs)
-{
-    return bs->certs;
-}
-int OCSP_resp_get0_id(const OCSP_BASICRESP *bs,
-                      const ASN1_OCTET_STRING **pid,
-                      const X509_NAME **pname)
-{
-    const OCSP_RESPID *rid = bs->tbsResponseData->responderId;
-
-    if (rid->type == V_OCSP_RESPID_NAME) {
-        *pname = rid->value.byName;
-        *pid = NULL;
-    } else if (rid->type == V_OCSP_RESPID_KEY) {
-        *pid = rid->value.byKey;
-        *pname = NULL;
-    } else {
-        return 0;
-    }
-    return 1;
-}
-const ASN1_GENERALIZEDTIME *OCSP_resp_get0_produced_at(
-    const OCSP_BASICRESP* bs)
-{
-    return bs->tbsResponseData->producedAt;
-}
-const ASN1_OCTET_STRING *OCSP_resp_get0_signature(const OCSP_BASICRESP *bs)
-{
-    return bs->signature;
-}
-#endif
-
 #if CRYPTOGRAPHY_OPENSSL_LESS_THAN_110J
 const X509_ALGOR *OCSP_resp_get0_tbs_sigalg(const OCSP_BASICRESP *bs)
 {
-#if CRYPTOGRAPHY_IS_LIBRESSL
-    return bs->signatureAlgorithm;
-#else
     return &bs->signatureAlgorithm;
-#endif
 }
 
 const OCSP_RESPDATA *OCSP_resp_get0_respdata(const OCSP_BASICRESP *bs)
 {
-#if CRYPTOGRAPHY_IS_LIBRESSL
-    return bs->tbsResponseData;
-#else
     return &bs->tbsResponseData;
-#endif
 }
 #endif
 """
--- src/_cffi_src/openssl/ssl.py.orig	2021-08-24 17:17:17 UTC
+++ src/_cffi_src/openssl/ssl.py
@@ -515,12 +515,7 @@ static const long Cryptography_HAS_TLSEXT_HOSTNAME = 1
 // users have upgraded. PersistentlyDeprecated2020
 static const long Cryptography_HAS_TLSEXT_HOSTNAME = 1;
 
-#if CRYPTOGRAPHY_IS_LIBRESSL
-static const long Cryptography_HAS_VERIFIED_CHAIN = 0;
-Cryptography_STACK_OF_X509 *(*SSL_get0_verified_chain)(const SSL *) = NULL;
-#else
 static const long Cryptography_HAS_VERIFIED_CHAIN = 1;
-#endif
 
 #if CRYPTOGRAPHY_OPENSSL_LESS_THAN_111
 static const long Cryptography_HAS_KEYLOG = 0;
@@ -586,8 +581,6 @@ static const long TLS_ST_OK = 0;
 #endif
 
 #if CRYPTOGRAPHY_IS_LIBRESSL
-static const long SSL_OP_NO_DTLSv1 = 0;
-static const long SSL_OP_NO_DTLSv1_2 = 0;
 long (*DTLS_set_link_mtu)(SSL *, long) = NULL;
 long (*DTLS_get_link_min_mtu)(SSL *) = NULL;
 #endif
--- src/_cffi_src/openssl/x509.py.orig	2021-08-24 17:02:37 UTC
+++ src/_cffi_src/openssl/x509.py
@@ -276,33 +276,8 @@ CUSTOMIZATIONS = """
 """
 
 CUSTOMIZATIONS = """
-#if CRYPTOGRAPHY_IS_LIBRESSL
-int i2d_re_X509_tbs(X509 *x, unsigned char **pp)
-{
-    /* in 1.0.2+ this function also sets x->cert_info->enc.modified = 1
-       but older OpenSSLs don't have the enc ASN1_ENCODING member in the
-       X509 struct.  Setting modified to 1 marks the encoding
-       (x->cert_info->enc.enc) as invalid, but since the entire struct isn't
-       present we don't care. */
-    return i2d_X509_CINF(x->cert_info, pp);
-}
-#endif
-
 /* Being kept around for pyOpenSSL */
 X509_REVOKED *Cryptography_X509_REVOKED_dup(X509_REVOKED *rev) {
     return X509_REVOKED_dup(rev);
 }
-/* Added in 1.1.0 but we need it in all versions now due to the great
-   opaquing. */
-#if CRYPTOGRAPHY_IS_LIBRESSL
-int i2d_re_X509_REQ_tbs(X509_REQ *req, unsigned char **pp)
-{
-    req->req_info->enc.modified = 1;
-    return i2d_X509_REQ_INFO(req->req_info, pp);
-}
-int i2d_re_X509_CRL_tbs(X509_CRL *crl, unsigned char **pp) {
-    crl->crl->enc.modified = 1;
-    return i2d_X509_CRL_INFO(crl->crl, pp);
-}
-#endif
 """