diff --git a/crypto/x509v3/v3_purp.c b/crypto/x509v3/v3_purp.c
index d1f56f0..133839a 100644
--- a/crypto/x509v3/v3_purp.c
+++ b/crypto/x509v3/v3_purp.c
@@ -64,7 +64,6 @@
 #include <openssl/mem.h>
 #include <openssl/obj.h>
 #include <openssl/thread.h>
-#include <openssl/x509_vfy.h>
 #include <openssl/x509v3.h>
 
 #include "../internal.h"
diff --git a/include/openssl/x509.h b/include/openssl/x509.h
index 30ad4d2..db6edde 100644
--- a/include/openssl/x509.h
+++ b/include/openssl/x509.h
@@ -284,7 +284,6 @@
   EVP_CIPHER_INFO cipher;
 } /* X509_PKEY */;
 
-#ifndef OPENSSL_NO_EVP
 struct X509_info_st {
   X509 *x509;
   X509_CRL *crl;
@@ -297,7 +296,6 @@
 } /* X509_INFO */;
 
 DEFINE_STACK_OF(X509_INFO)
-#endif
 
 // The next 2 structures and their 8 routines were sent to me by
 // Pat Richard <patr@x509.com> and are used to manipulate
@@ -313,16 +311,6 @@
   ASN1_BIT_STRING *signature;
 } /* NETSCAPE_SPKI */;
 
-#ifdef __cplusplus
-}
-#endif
-
-#include <openssl/x509_vfy.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 // TODO(davidben): Document remaining functions, reorganize them, and define
 // supported patterns for using |X509| objects in general. In particular, when
 // it is safe to call mutating functions is a little tricky due to various
@@ -522,9 +510,6 @@
 // X509_verify_cert_error_string returns |err| as a human-readable string, where
 // |err| should be one of the |X509_V_*| values. If |err| is unknown, it returns
 // a default description.
-//
-// TODO(davidben): Move this function to x509_vfy.h, with the |X509_V_*|
-// definitions, or fold x509_vfy.h into this function.
 OPENSSL_EXPORT const char *X509_verify_cert_error_string(long err);
 
 // X509_verify checks that |x509| has a valid signature by |pkey|. It returns
@@ -1900,6 +1885,485 @@
 
 DECLARE_ASN1_FUNCTIONS(RSA_PSS_PARAMS)
 
+/*
+SSL_CTX -> X509_STORE
+                -> X509_LOOKUP
+                        ->X509_LOOKUP_METHOD
+                -> X509_LOOKUP
+                        ->X509_LOOKUP_METHOD
+
+SSL	-> X509_STORE_CTX
+                ->X509_STORE
+
+The X509_STORE holds the tables etc for verification stuff.
+A X509_STORE_CTX is used while validating a single certificate.
+The X509_STORE has X509_LOOKUPs for looking up certs.
+The X509_STORE then calls a function to actually verify the
+certificate chain.
+*/
+
+#define X509_LU_X509 1
+#define X509_LU_CRL 2
+#define X509_LU_PKEY 3
+
+DEFINE_STACK_OF(X509_LOOKUP)
+DEFINE_STACK_OF(X509_OBJECT)
+DEFINE_STACK_OF(X509_VERIFY_PARAM)
+
+typedef int (*X509_STORE_CTX_verify_cb)(int, X509_STORE_CTX *);
+typedef int (*X509_STORE_CTX_verify_fn)(X509_STORE_CTX *);
+typedef int (*X509_STORE_CTX_get_issuer_fn)(X509 **issuer, X509_STORE_CTX *ctx,
+                                            X509 *x);
+typedef int (*X509_STORE_CTX_check_issued_fn)(X509_STORE_CTX *ctx, X509 *x,
+                                              X509 *issuer);
+typedef int (*X509_STORE_CTX_check_revocation_fn)(X509_STORE_CTX *ctx);
+typedef int (*X509_STORE_CTX_get_crl_fn)(X509_STORE_CTX *ctx, X509_CRL **crl,
+                                         X509 *x);
+typedef int (*X509_STORE_CTX_check_crl_fn)(X509_STORE_CTX *ctx, X509_CRL *crl);
+typedef int (*X509_STORE_CTX_cert_crl_fn)(X509_STORE_CTX *ctx, X509_CRL *crl,
+                                          X509 *x);
+typedef int (*X509_STORE_CTX_check_policy_fn)(X509_STORE_CTX *ctx);
+typedef STACK_OF(X509) *(*X509_STORE_CTX_lookup_certs_fn)(X509_STORE_CTX *ctx,
+                                                          X509_NAME *nm);
+typedef STACK_OF(X509_CRL) *(*X509_STORE_CTX_lookup_crls_fn)(
+    X509_STORE_CTX *ctx, X509_NAME *nm);
+typedef int (*X509_STORE_CTX_cleanup_fn)(X509_STORE_CTX *ctx);
+
+OPENSSL_EXPORT int X509_STORE_set_depth(X509_STORE *store, int depth);
+
+OPENSSL_EXPORT void X509_STORE_CTX_set_depth(X509_STORE_CTX *ctx, int depth);
+
+#define X509_STORE_CTX_set_app_data(ctx, data) \
+  X509_STORE_CTX_set_ex_data(ctx, 0, data)
+#define X509_STORE_CTX_get_app_data(ctx) X509_STORE_CTX_get_ex_data(ctx, 0)
+
+#define X509_L_FILE_LOAD 1
+#define X509_L_ADD_DIR 2
+
+#define X509_LOOKUP_load_file(x, name, type) \
+  X509_LOOKUP_ctrl((x), X509_L_FILE_LOAD, (name), (long)(type), NULL)
+
+#define X509_LOOKUP_add_dir(x, name, type) \
+  X509_LOOKUP_ctrl((x), X509_L_ADD_DIR, (name), (long)(type), NULL)
+
+#define X509_V_OK 0
+#define X509_V_ERR_UNSPECIFIED 1
+
+#define X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT 2
+#define X509_V_ERR_UNABLE_TO_GET_CRL 3
+#define X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE 4
+#define X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE 5
+#define X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY 6
+#define X509_V_ERR_CERT_SIGNATURE_FAILURE 7
+#define X509_V_ERR_CRL_SIGNATURE_FAILURE 8
+#define X509_V_ERR_CERT_NOT_YET_VALID 9
+#define X509_V_ERR_CERT_HAS_EXPIRED 10
+#define X509_V_ERR_CRL_NOT_YET_VALID 11
+#define X509_V_ERR_CRL_HAS_EXPIRED 12
+#define X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD 13
+#define X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD 14
+#define X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD 15
+#define X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD 16
+#define X509_V_ERR_OUT_OF_MEM 17
+#define X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT 18
+#define X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN 19
+#define X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY 20
+#define X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE 21
+#define X509_V_ERR_CERT_CHAIN_TOO_LONG 22
+#define X509_V_ERR_CERT_REVOKED 23
+#define X509_V_ERR_INVALID_CA 24
+#define X509_V_ERR_PATH_LENGTH_EXCEEDED 25
+#define X509_V_ERR_INVALID_PURPOSE 26
+#define X509_V_ERR_CERT_UNTRUSTED 27
+#define X509_V_ERR_CERT_REJECTED 28
+// These are 'informational' when looking for issuer cert
+#define X509_V_ERR_SUBJECT_ISSUER_MISMATCH 29
+#define X509_V_ERR_AKID_SKID_MISMATCH 30
+#define X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH 31
+#define X509_V_ERR_KEYUSAGE_NO_CERTSIGN 32
+
+#define X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER 33
+#define X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION 34
+#define X509_V_ERR_KEYUSAGE_NO_CRL_SIGN 35
+#define X509_V_ERR_UNHANDLED_CRITICAL_CRL_EXTENSION 36
+#define X509_V_ERR_INVALID_NON_CA 37
+#define X509_V_ERR_PROXY_PATH_LENGTH_EXCEEDED 38
+#define X509_V_ERR_KEYUSAGE_NO_DIGITAL_SIGNATURE 39
+#define X509_V_ERR_PROXY_CERTIFICATES_NOT_ALLOWED 40
+
+#define X509_V_ERR_INVALID_EXTENSION 41
+#define X509_V_ERR_INVALID_POLICY_EXTENSION 42
+#define X509_V_ERR_NO_EXPLICIT_POLICY 43
+#define X509_V_ERR_DIFFERENT_CRL_SCOPE 44
+#define X509_V_ERR_UNSUPPORTED_EXTENSION_FEATURE 45
+
+#define X509_V_ERR_UNNESTED_RESOURCE 46
+
+#define X509_V_ERR_PERMITTED_VIOLATION 47
+#define X509_V_ERR_EXCLUDED_VIOLATION 48
+#define X509_V_ERR_SUBTREE_MINMAX 49
+#define X509_V_ERR_APPLICATION_VERIFICATION 50
+#define X509_V_ERR_UNSUPPORTED_CONSTRAINT_TYPE 51
+#define X509_V_ERR_UNSUPPORTED_CONSTRAINT_SYNTAX 52
+#define X509_V_ERR_UNSUPPORTED_NAME_SYNTAX 53
+#define X509_V_ERR_CRL_PATH_VALIDATION_ERROR 54
+
+// Suite B mode algorithm violation
+#define X509_V_ERR_SUITE_B_INVALID_VERSION 56
+#define X509_V_ERR_SUITE_B_INVALID_ALGORITHM 57
+#define X509_V_ERR_SUITE_B_INVALID_CURVE 58
+#define X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM 59
+#define X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED 60
+#define X509_V_ERR_SUITE_B_CANNOT_SIGN_P_384_WITH_P_256 61
+
+// Host, email and IP check errors
+#define X509_V_ERR_HOSTNAME_MISMATCH 62
+#define X509_V_ERR_EMAIL_MISMATCH 63
+#define X509_V_ERR_IP_ADDRESS_MISMATCH 64
+
+// Caller error
+#define X509_V_ERR_INVALID_CALL 65
+// Issuer lookup error
+#define X509_V_ERR_STORE_LOOKUP 66
+
+#define X509_V_ERR_NAME_CONSTRAINTS_WITHOUT_SANS 67
+
+// Certificate verify flags
+
+// Send issuer+subject checks to verify_cb
+#define X509_V_FLAG_CB_ISSUER_CHECK 0x1
+// Use check time instead of current time
+#define X509_V_FLAG_USE_CHECK_TIME 0x2
+// Lookup CRLs
+#define X509_V_FLAG_CRL_CHECK 0x4
+// Lookup CRLs for whole chain
+#define X509_V_FLAG_CRL_CHECK_ALL 0x8
+// Ignore unhandled critical extensions
+#define X509_V_FLAG_IGNORE_CRITICAL 0x10
+// Does nothing as its functionality has been enabled by default.
+#define X509_V_FLAG_X509_STRICT 0x00
+// Enable proxy certificate validation
+#define X509_V_FLAG_ALLOW_PROXY_CERTS 0x40
+// Enable policy checking
+#define X509_V_FLAG_POLICY_CHECK 0x80
+// Policy variable require-explicit-policy
+#define X509_V_FLAG_EXPLICIT_POLICY 0x100
+// Policy variable inhibit-any-policy
+#define X509_V_FLAG_INHIBIT_ANY 0x200
+// Policy variable inhibit-policy-mapping
+#define X509_V_FLAG_INHIBIT_MAP 0x400
+// Notify callback that policy is OK
+#define X509_V_FLAG_NOTIFY_POLICY 0x800
+// Extended CRL features such as indirect CRLs, alternate CRL signing keys
+#define X509_V_FLAG_EXTENDED_CRL_SUPPORT 0x1000
+// Delta CRL support
+#define X509_V_FLAG_USE_DELTAS 0x2000
+// Check selfsigned CA signature
+#define X509_V_FLAG_CHECK_SS_SIGNATURE 0x4000
+// Use trusted store first
+#define X509_V_FLAG_TRUSTED_FIRST 0x8000
+// Suite B 128 bit only mode: not normally used
+#define X509_V_FLAG_SUITEB_128_LOS_ONLY 0x10000
+// Suite B 192 bit only mode
+#define X509_V_FLAG_SUITEB_192_LOS 0x20000
+// Suite B 128 bit mode allowing 192 bit algorithms
+#define X509_V_FLAG_SUITEB_128_LOS 0x30000
+
+// Allow partial chains if at least one certificate is in trusted store
+#define X509_V_FLAG_PARTIAL_CHAIN 0x80000
+
+// If the initial chain is not trusted, do not attempt to build an alternative
+// chain. Alternate chain checking was introduced in 1.0.2b. Setting this flag
+// will force the behaviour to match that of previous versions.
+#define X509_V_FLAG_NO_ALT_CHAINS 0x100000
+
+#define X509_VP_FLAG_DEFAULT 0x1
+#define X509_VP_FLAG_OVERWRITE 0x2
+#define X509_VP_FLAG_RESET_FLAGS 0x4
+#define X509_VP_FLAG_LOCKED 0x8
+#define X509_VP_FLAG_ONCE 0x10
+
+// Internal use: mask of policy related options
+#define X509_V_FLAG_POLICY_MASK                             \
+  (X509_V_FLAG_POLICY_CHECK | X509_V_FLAG_EXPLICIT_POLICY | \
+   X509_V_FLAG_INHIBIT_ANY | X509_V_FLAG_INHIBIT_MAP)
+
+OPENSSL_EXPORT int X509_OBJECT_idx_by_subject(STACK_OF(X509_OBJECT) *h,
+                                              int type, X509_NAME *name);
+OPENSSL_EXPORT X509_OBJECT *X509_OBJECT_retrieve_by_subject(
+    STACK_OF(X509_OBJECT) *h, int type, X509_NAME *name);
+OPENSSL_EXPORT X509_OBJECT *X509_OBJECT_retrieve_match(STACK_OF(X509_OBJECT) *h,
+                                                       X509_OBJECT *x);
+OPENSSL_EXPORT int X509_OBJECT_up_ref_count(X509_OBJECT *a);
+OPENSSL_EXPORT void X509_OBJECT_free_contents(X509_OBJECT *a);
+OPENSSL_EXPORT int X509_OBJECT_get_type(const X509_OBJECT *a);
+OPENSSL_EXPORT X509 *X509_OBJECT_get0_X509(const X509_OBJECT *a);
+OPENSSL_EXPORT X509_STORE *X509_STORE_new(void);
+OPENSSL_EXPORT int X509_STORE_up_ref(X509_STORE *store);
+OPENSSL_EXPORT void X509_STORE_free(X509_STORE *v);
+
+OPENSSL_EXPORT STACK_OF(X509_OBJECT) *X509_STORE_get0_objects(X509_STORE *st);
+OPENSSL_EXPORT STACK_OF(X509) *X509_STORE_get1_certs(X509_STORE_CTX *st,
+                                                     X509_NAME *nm);
+OPENSSL_EXPORT STACK_OF(X509_CRL) *X509_STORE_get1_crls(X509_STORE_CTX *st,
+                                                        X509_NAME *nm);
+OPENSSL_EXPORT int X509_STORE_set_flags(X509_STORE *ctx, unsigned long flags);
+OPENSSL_EXPORT int X509_STORE_set_purpose(X509_STORE *ctx, int purpose);
+OPENSSL_EXPORT int X509_STORE_set_trust(X509_STORE *ctx, int trust);
+OPENSSL_EXPORT int X509_STORE_set1_param(X509_STORE *ctx,
+                                         X509_VERIFY_PARAM *pm);
+OPENSSL_EXPORT X509_VERIFY_PARAM *X509_STORE_get0_param(X509_STORE *ctx);
+
+OPENSSL_EXPORT void X509_STORE_set_verify(X509_STORE *ctx,
+                                          X509_STORE_CTX_verify_fn verify);
+#define X509_STORE_set_verify_func(ctx, func) \
+  X509_STORE_set_verify((ctx), (func))
+OPENSSL_EXPORT void X509_STORE_CTX_set_verify(X509_STORE_CTX *ctx,
+                                              X509_STORE_CTX_verify_fn verify);
+OPENSSL_EXPORT X509_STORE_CTX_verify_fn X509_STORE_get_verify(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_verify_cb(
+    X509_STORE *ctx, X509_STORE_CTX_verify_cb verify_cb);
+#define X509_STORE_set_verify_cb_func(ctx, func) \
+  X509_STORE_set_verify_cb((ctx), (func))
+OPENSSL_EXPORT X509_STORE_CTX_verify_cb
+X509_STORE_get_verify_cb(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_get_issuer(
+    X509_STORE *ctx, X509_STORE_CTX_get_issuer_fn get_issuer);
+OPENSSL_EXPORT X509_STORE_CTX_get_issuer_fn
+X509_STORE_get_get_issuer(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_check_issued(
+    X509_STORE *ctx, X509_STORE_CTX_check_issued_fn check_issued);
+OPENSSL_EXPORT X509_STORE_CTX_check_issued_fn
+X509_STORE_get_check_issued(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_check_revocation(
+    X509_STORE *ctx, X509_STORE_CTX_check_revocation_fn check_revocation);
+OPENSSL_EXPORT X509_STORE_CTX_check_revocation_fn
+X509_STORE_get_check_revocation(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_get_crl(X509_STORE *ctx,
+                                           X509_STORE_CTX_get_crl_fn get_crl);
+OPENSSL_EXPORT X509_STORE_CTX_get_crl_fn
+X509_STORE_get_get_crl(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_check_crl(
+    X509_STORE *ctx, X509_STORE_CTX_check_crl_fn check_crl);
+OPENSSL_EXPORT X509_STORE_CTX_check_crl_fn
+X509_STORE_get_check_crl(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_cert_crl(
+    X509_STORE *ctx, X509_STORE_CTX_cert_crl_fn cert_crl);
+OPENSSL_EXPORT X509_STORE_CTX_cert_crl_fn
+X509_STORE_get_cert_crl(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_lookup_certs(
+    X509_STORE *ctx, X509_STORE_CTX_lookup_certs_fn lookup_certs);
+OPENSSL_EXPORT X509_STORE_CTX_lookup_certs_fn
+X509_STORE_get_lookup_certs(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_lookup_crls(
+    X509_STORE *ctx, X509_STORE_CTX_lookup_crls_fn lookup_crls);
+#define X509_STORE_set_lookup_crls_cb(ctx, func) \
+  X509_STORE_set_lookup_crls((ctx), (func))
+OPENSSL_EXPORT X509_STORE_CTX_lookup_crls_fn
+X509_STORE_get_lookup_crls(X509_STORE *ctx);
+OPENSSL_EXPORT void X509_STORE_set_cleanup(X509_STORE *ctx,
+                                           X509_STORE_CTX_cleanup_fn cleanup);
+OPENSSL_EXPORT X509_STORE_CTX_cleanup_fn
+X509_STORE_get_cleanup(X509_STORE *ctx);
+
+OPENSSL_EXPORT X509_STORE_CTX *X509_STORE_CTX_new(void);
+
+OPENSSL_EXPORT int X509_STORE_CTX_get1_issuer(X509 **issuer,
+                                              X509_STORE_CTX *ctx, X509 *x);
+
+OPENSSL_EXPORT void X509_STORE_CTX_zero(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT void X509_STORE_CTX_free(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT int X509_STORE_CTX_init(X509_STORE_CTX *ctx, X509_STORE *store,
+                                       X509 *x509, STACK_OF(X509) *chain);
+OPENSSL_EXPORT void X509_STORE_CTX_trusted_stack(X509_STORE_CTX *ctx,
+                                                 STACK_OF(X509) *sk);
+OPENSSL_EXPORT void X509_STORE_CTX_cleanup(X509_STORE_CTX *ctx);
+
+OPENSSL_EXPORT X509_STORE *X509_STORE_CTX_get0_store(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT X509 *X509_STORE_CTX_get0_cert(X509_STORE_CTX *ctx);
+
+OPENSSL_EXPORT X509_LOOKUP *X509_STORE_add_lookup(X509_STORE *v,
+                                                  X509_LOOKUP_METHOD *m);
+
+OPENSSL_EXPORT X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir(void);
+OPENSSL_EXPORT X509_LOOKUP_METHOD *X509_LOOKUP_file(void);
+
+OPENSSL_EXPORT int X509_STORE_add_cert(X509_STORE *ctx, X509 *x);
+OPENSSL_EXPORT int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x);
+
+OPENSSL_EXPORT int X509_STORE_get_by_subject(X509_STORE_CTX *vs, int type,
+                                             X509_NAME *name, X509_OBJECT *ret);
+
+OPENSSL_EXPORT int X509_LOOKUP_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc,
+                                    long argl, char **ret);
+
+#ifndef OPENSSL_NO_STDIO
+OPENSSL_EXPORT int X509_load_cert_file(X509_LOOKUP *ctx, const char *file,
+                                       int type);
+OPENSSL_EXPORT int X509_load_crl_file(X509_LOOKUP *ctx, const char *file,
+                                      int type);
+OPENSSL_EXPORT int X509_load_cert_crl_file(X509_LOOKUP *ctx, const char *file,
+                                           int type);
+#endif
+
+OPENSSL_EXPORT X509_LOOKUP *X509_LOOKUP_new(X509_LOOKUP_METHOD *method);
+OPENSSL_EXPORT void X509_LOOKUP_free(X509_LOOKUP *ctx);
+OPENSSL_EXPORT int X509_LOOKUP_init(X509_LOOKUP *ctx);
+OPENSSL_EXPORT int X509_LOOKUP_by_subject(X509_LOOKUP *ctx, int type,
+                                          X509_NAME *name, X509_OBJECT *ret);
+OPENSSL_EXPORT int X509_LOOKUP_by_issuer_serial(X509_LOOKUP *ctx, int type,
+                                                X509_NAME *name,
+                                                ASN1_INTEGER *serial,
+                                                X509_OBJECT *ret);
+OPENSSL_EXPORT int X509_LOOKUP_by_fingerprint(X509_LOOKUP *ctx, int type,
+                                              unsigned char *bytes, int len,
+                                              X509_OBJECT *ret);
+OPENSSL_EXPORT int X509_LOOKUP_by_alias(X509_LOOKUP *ctx, int type, char *str,
+                                        int len, X509_OBJECT *ret);
+OPENSSL_EXPORT int X509_LOOKUP_shutdown(X509_LOOKUP *ctx);
+
+#ifndef OPENSSL_NO_STDIO
+OPENSSL_EXPORT int X509_STORE_load_locations(X509_STORE *ctx, const char *file,
+                                             const char *dir);
+OPENSSL_EXPORT int X509_STORE_set_default_paths(X509_STORE *ctx);
+#endif
+
+OPENSSL_EXPORT int X509_STORE_CTX_get_ex_new_index(long argl, void *argp,
+                                                   CRYPTO_EX_unused *unused,
+                                                   CRYPTO_EX_dup *dup_unused,
+                                                   CRYPTO_EX_free *free_func);
+OPENSSL_EXPORT int X509_STORE_CTX_set_ex_data(X509_STORE_CTX *ctx, int idx,
+                                              void *data);
+OPENSSL_EXPORT void *X509_STORE_CTX_get_ex_data(X509_STORE_CTX *ctx, int idx);
+OPENSSL_EXPORT int X509_STORE_CTX_get_error(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT void X509_STORE_CTX_set_error(X509_STORE_CTX *ctx, int s);
+OPENSSL_EXPORT int X509_STORE_CTX_get_error_depth(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT X509 *X509_STORE_CTX_get_current_cert(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT X509 *X509_STORE_CTX_get0_current_issuer(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT X509_CRL *X509_STORE_CTX_get0_current_crl(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT X509_STORE_CTX *X509_STORE_CTX_get0_parent_ctx(
+    X509_STORE_CTX *ctx);
+OPENSSL_EXPORT STACK_OF(X509) *X509_STORE_CTX_get_chain(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT STACK_OF(X509) *X509_STORE_CTX_get0_chain(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT STACK_OF(X509) *X509_STORE_CTX_get1_chain(X509_STORE_CTX *ctx);
+OPENSSL_EXPORT void X509_STORE_CTX_set_cert(X509_STORE_CTX *c, X509 *x);
+OPENSSL_EXPORT void X509_STORE_CTX_set_chain(X509_STORE_CTX *c,
+                                             STACK_OF(X509) *sk);
+OPENSSL_EXPORT STACK_OF(X509) *X509_STORE_CTX_get0_untrusted(
+    X509_STORE_CTX *ctx);
+OPENSSL_EXPORT void X509_STORE_CTX_set0_crls(X509_STORE_CTX *c,
+                                             STACK_OF(X509_CRL) *sk);
+OPENSSL_EXPORT int X509_STORE_CTX_set_purpose(X509_STORE_CTX *ctx, int purpose);
+OPENSSL_EXPORT int X509_STORE_CTX_set_trust(X509_STORE_CTX *ctx, int trust);
+OPENSSL_EXPORT int X509_STORE_CTX_purpose_inherit(X509_STORE_CTX *ctx,
+                                                  int def_purpose, int purpose,
+                                                  int trust);
+OPENSSL_EXPORT void X509_STORE_CTX_set_flags(X509_STORE_CTX *ctx,
+                                             unsigned long flags);
+OPENSSL_EXPORT void X509_STORE_CTX_set_time(X509_STORE_CTX *ctx,
+                                            unsigned long flags, time_t t);
+OPENSSL_EXPORT void X509_STORE_CTX_set_verify_cb(
+    X509_STORE_CTX *ctx, int (*verify_cb)(int, X509_STORE_CTX *));
+
+OPENSSL_EXPORT X509_POLICY_TREE *X509_STORE_CTX_get0_policy_tree(
+    X509_STORE_CTX *ctx);
+OPENSSL_EXPORT int X509_STORE_CTX_get_explicit_policy(X509_STORE_CTX *ctx);
+
+OPENSSL_EXPORT X509_VERIFY_PARAM *X509_STORE_CTX_get0_param(
+    X509_STORE_CTX *ctx);
+OPENSSL_EXPORT void X509_STORE_CTX_set0_param(X509_STORE_CTX *ctx,
+                                              X509_VERIFY_PARAM *param);
+OPENSSL_EXPORT int X509_STORE_CTX_set_default(X509_STORE_CTX *ctx,
+                                              const char *name);
+
+// X509_VERIFY_PARAM functions
+
+OPENSSL_EXPORT X509_VERIFY_PARAM *X509_VERIFY_PARAM_new(void);
+OPENSSL_EXPORT void X509_VERIFY_PARAM_free(X509_VERIFY_PARAM *param);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_inherit(X509_VERIFY_PARAM *to,
+                                             const X509_VERIFY_PARAM *from);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1(X509_VERIFY_PARAM *to,
+                                          const X509_VERIFY_PARAM *from);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_name(X509_VERIFY_PARAM *param,
+                                               const char *name);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set_flags(X509_VERIFY_PARAM *param,
+                                               unsigned long flags);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_clear_flags(X509_VERIFY_PARAM *param,
+                                                 unsigned long flags);
+OPENSSL_EXPORT unsigned long X509_VERIFY_PARAM_get_flags(
+    X509_VERIFY_PARAM *param);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set_purpose(X509_VERIFY_PARAM *param,
+                                                 int purpose);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set_trust(X509_VERIFY_PARAM *param,
+                                               int trust);
+OPENSSL_EXPORT void X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM *param,
+                                                int depth);
+OPENSSL_EXPORT void X509_VERIFY_PARAM_set_time(X509_VERIFY_PARAM *param,
+                                               time_t t);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_add0_policy(X509_VERIFY_PARAM *param,
+                                                 ASN1_OBJECT *policy);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_policies(
+    X509_VERIFY_PARAM *param, STACK_OF(ASN1_OBJECT) *policies);
+
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_host(X509_VERIFY_PARAM *param,
+                                               const char *name,
+                                               size_t namelen);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_add1_host(X509_VERIFY_PARAM *param,
+                                               const char *name,
+                                               size_t namelen);
+OPENSSL_EXPORT void X509_VERIFY_PARAM_set_hostflags(X509_VERIFY_PARAM *param,
+                                                    unsigned int flags);
+OPENSSL_EXPORT char *X509_VERIFY_PARAM_get0_peername(X509_VERIFY_PARAM *);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_email(X509_VERIFY_PARAM *param,
+                                                const char *email,
+                                                size_t emaillen);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_ip(X509_VERIFY_PARAM *param,
+                                             const unsigned char *ip,
+                                             size_t iplen);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_ip_asc(X509_VERIFY_PARAM *param,
+                                                 const char *ipasc);
+
+OPENSSL_EXPORT int X509_VERIFY_PARAM_get_depth(const X509_VERIFY_PARAM *param);
+OPENSSL_EXPORT const char *X509_VERIFY_PARAM_get0_name(
+    const X509_VERIFY_PARAM *param);
+
+OPENSSL_EXPORT int X509_VERIFY_PARAM_add0_table(X509_VERIFY_PARAM *param);
+OPENSSL_EXPORT int X509_VERIFY_PARAM_get_count(void);
+OPENSSL_EXPORT const X509_VERIFY_PARAM *X509_VERIFY_PARAM_get0(int id);
+OPENSSL_EXPORT const X509_VERIFY_PARAM *X509_VERIFY_PARAM_lookup(
+    const char *name);
+OPENSSL_EXPORT void X509_VERIFY_PARAM_table_cleanup(void);
+
+OPENSSL_EXPORT int X509_policy_check(X509_POLICY_TREE **ptree,
+                                     int *pexplicit_policy,
+                                     STACK_OF(X509) *certs,
+                                     STACK_OF(ASN1_OBJECT) *policy_oids,
+                                     unsigned int flags);
+
+OPENSSL_EXPORT void X509_policy_tree_free(X509_POLICY_TREE *tree);
+
+OPENSSL_EXPORT int X509_policy_tree_level_count(const X509_POLICY_TREE *tree);
+OPENSSL_EXPORT X509_POLICY_LEVEL *X509_policy_tree_get0_level(
+    const X509_POLICY_TREE *tree, int i);
+
+OPENSSL_EXPORT STACK_OF(X509_POLICY_NODE) *X509_policy_tree_get0_policies(
+    const X509_POLICY_TREE *tree);
+
+OPENSSL_EXPORT STACK_OF(X509_POLICY_NODE) *X509_policy_tree_get0_user_policies(
+    const X509_POLICY_TREE *tree);
+
+OPENSSL_EXPORT int X509_policy_level_node_count(X509_POLICY_LEVEL *level);
+
+OPENSSL_EXPORT X509_POLICY_NODE *X509_policy_level_get0_node(
+    X509_POLICY_LEVEL *level, int i);
+
+OPENSSL_EXPORT const ASN1_OBJECT *X509_policy_node_get0_policy(
+    const X509_POLICY_NODE *node);
+
+OPENSSL_EXPORT STACK_OF(POLICYQUALINFO) *X509_policy_node_get0_qualifiers(
+    const X509_POLICY_NODE *node);
+OPENSSL_EXPORT const X509_POLICY_NODE *X509_policy_node_get0_parent(
+    const X509_POLICY_NODE *node);
 
 
 #ifdef __cplusplus
diff --git a/include/openssl/x509_vfy.h b/include/openssl/x509_vfy.h
index 719807e..04bc8dd 100644
--- a/include/openssl/x509_vfy.h
+++ b/include/openssl/x509_vfy.h
@@ -1,566 +1,18 @@
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/* Copyright (c) 2021, Google Inc.
  *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
  *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to.  The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *    "This product includes cryptographic software written by
- *     Eric Young (eay@cryptsoft.com)"
- *    The word 'cryptographic' can be left out if the rouines from the library
- *    being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- *    the apps directory (application code) you must include an acknowledgement:
- *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed.  i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
 
-#ifndef HEADER_X509_H
-#include <openssl/x509.h>
-// openssl/x509.h ends up #include-ing this file at about the only
-// appropriate moment.
-#endif
+/* This header is provided in order to make compiling against code that expects
+   OpenSSL easier. */
 
-#ifndef HEADER_X509_VFY_H
-#define HEADER_X509_VFY_H
-
-#include <openssl/thread.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-// Legacy X.509 library.
-//
-// This header is part of OpenSSL's X.509 implementation. It is retained for
-// compatibility but otherwise underdocumented and not actively maintained. In
-// the future, a replacement library will be available. Meanwhile, minimize
-// dependencies on this header where possible.
-
-
-/*
-SSL_CTX -> X509_STORE
-                -> X509_LOOKUP
-                        ->X509_LOOKUP_METHOD
-                -> X509_LOOKUP
-                        ->X509_LOOKUP_METHOD
-
-SSL	-> X509_STORE_CTX
-                ->X509_STORE
-
-The X509_STORE holds the tables etc for verification stuff.
-A X509_STORE_CTX is used while validating a single certificate.
-The X509_STORE has X509_LOOKUPs for looking up certs.
-The X509_STORE then calls a function to actually verify the
-certificate chain.
-*/
-
-#define X509_LU_X509 1
-#define X509_LU_CRL 2
-#define X509_LU_PKEY 3
-
-DEFINE_STACK_OF(X509_LOOKUP)
-DEFINE_STACK_OF(X509_OBJECT)
-DEFINE_STACK_OF(X509_VERIFY_PARAM)
-
-typedef int (*X509_STORE_CTX_verify_cb)(int, X509_STORE_CTX *);
-typedef int (*X509_STORE_CTX_verify_fn)(X509_STORE_CTX *);
-typedef int (*X509_STORE_CTX_get_issuer_fn)(X509 **issuer, X509_STORE_CTX *ctx,
-                                            X509 *x);
-typedef int (*X509_STORE_CTX_check_issued_fn)(X509_STORE_CTX *ctx, X509 *x,
-                                              X509 *issuer);
-typedef int (*X509_STORE_CTX_check_revocation_fn)(X509_STORE_CTX *ctx);
-typedef int (*X509_STORE_CTX_get_crl_fn)(X509_STORE_CTX *ctx, X509_CRL **crl,
-                                         X509 *x);
-typedef int (*X509_STORE_CTX_check_crl_fn)(X509_STORE_CTX *ctx, X509_CRL *crl);
-typedef int (*X509_STORE_CTX_cert_crl_fn)(X509_STORE_CTX *ctx, X509_CRL *crl,
-                                          X509 *x);
-typedef int (*X509_STORE_CTX_check_policy_fn)(X509_STORE_CTX *ctx);
-typedef STACK_OF(X509) *(*X509_STORE_CTX_lookup_certs_fn)(X509_STORE_CTX *ctx,
-                                                          X509_NAME *nm);
-typedef STACK_OF(X509_CRL) *(*X509_STORE_CTX_lookup_crls_fn)(
-    X509_STORE_CTX *ctx, X509_NAME *nm);
-typedef int (*X509_STORE_CTX_cleanup_fn)(X509_STORE_CTX *ctx);
-
-OPENSSL_EXPORT int X509_STORE_set_depth(X509_STORE *store, int depth);
-
-OPENSSL_EXPORT void X509_STORE_CTX_set_depth(X509_STORE_CTX *ctx, int depth);
-
-#define X509_STORE_CTX_set_app_data(ctx, data) \
-  X509_STORE_CTX_set_ex_data(ctx, 0, data)
-#define X509_STORE_CTX_get_app_data(ctx) X509_STORE_CTX_get_ex_data(ctx, 0)
-
-#define X509_L_FILE_LOAD 1
-#define X509_L_ADD_DIR 2
-
-#define X509_LOOKUP_load_file(x, name, type) \
-  X509_LOOKUP_ctrl((x), X509_L_FILE_LOAD, (name), (long)(type), NULL)
-
-#define X509_LOOKUP_add_dir(x, name, type) \
-  X509_LOOKUP_ctrl((x), X509_L_ADD_DIR, (name), (long)(type), NULL)
-
-#define X509_V_OK 0
-#define X509_V_ERR_UNSPECIFIED 1
-
-#define X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT 2
-#define X509_V_ERR_UNABLE_TO_GET_CRL 3
-#define X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE 4
-#define X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE 5
-#define X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY 6
-#define X509_V_ERR_CERT_SIGNATURE_FAILURE 7
-#define X509_V_ERR_CRL_SIGNATURE_FAILURE 8
-#define X509_V_ERR_CERT_NOT_YET_VALID 9
-#define X509_V_ERR_CERT_HAS_EXPIRED 10
-#define X509_V_ERR_CRL_NOT_YET_VALID 11
-#define X509_V_ERR_CRL_HAS_EXPIRED 12
-#define X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD 13
-#define X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD 14
-#define X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD 15
-#define X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD 16
-#define X509_V_ERR_OUT_OF_MEM 17
-#define X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT 18
-#define X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN 19
-#define X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY 20
-#define X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE 21
-#define X509_V_ERR_CERT_CHAIN_TOO_LONG 22
-#define X509_V_ERR_CERT_REVOKED 23
-#define X509_V_ERR_INVALID_CA 24
-#define X509_V_ERR_PATH_LENGTH_EXCEEDED 25
-#define X509_V_ERR_INVALID_PURPOSE 26
-#define X509_V_ERR_CERT_UNTRUSTED 27
-#define X509_V_ERR_CERT_REJECTED 28
-// These are 'informational' when looking for issuer cert
-#define X509_V_ERR_SUBJECT_ISSUER_MISMATCH 29
-#define X509_V_ERR_AKID_SKID_MISMATCH 30
-#define X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH 31
-#define X509_V_ERR_KEYUSAGE_NO_CERTSIGN 32
-
-#define X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER 33
-#define X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION 34
-#define X509_V_ERR_KEYUSAGE_NO_CRL_SIGN 35
-#define X509_V_ERR_UNHANDLED_CRITICAL_CRL_EXTENSION 36
-#define X509_V_ERR_INVALID_NON_CA 37
-#define X509_V_ERR_PROXY_PATH_LENGTH_EXCEEDED 38
-#define X509_V_ERR_KEYUSAGE_NO_DIGITAL_SIGNATURE 39
-#define X509_V_ERR_PROXY_CERTIFICATES_NOT_ALLOWED 40
-
-#define X509_V_ERR_INVALID_EXTENSION 41
-#define X509_V_ERR_INVALID_POLICY_EXTENSION 42
-#define X509_V_ERR_NO_EXPLICIT_POLICY 43
-#define X509_V_ERR_DIFFERENT_CRL_SCOPE 44
-#define X509_V_ERR_UNSUPPORTED_EXTENSION_FEATURE 45
-
-#define X509_V_ERR_UNNESTED_RESOURCE 46
-
-#define X509_V_ERR_PERMITTED_VIOLATION 47
-#define X509_V_ERR_EXCLUDED_VIOLATION 48
-#define X509_V_ERR_SUBTREE_MINMAX 49
-#define X509_V_ERR_APPLICATION_VERIFICATION 50
-#define X509_V_ERR_UNSUPPORTED_CONSTRAINT_TYPE 51
-#define X509_V_ERR_UNSUPPORTED_CONSTRAINT_SYNTAX 52
-#define X509_V_ERR_UNSUPPORTED_NAME_SYNTAX 53
-#define X509_V_ERR_CRL_PATH_VALIDATION_ERROR 54
-
-// Suite B mode algorithm violation
-#define X509_V_ERR_SUITE_B_INVALID_VERSION 56
-#define X509_V_ERR_SUITE_B_INVALID_ALGORITHM 57
-#define X509_V_ERR_SUITE_B_INVALID_CURVE 58
-#define X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM 59
-#define X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED 60
-#define X509_V_ERR_SUITE_B_CANNOT_SIGN_P_384_WITH_P_256 61
-
-// Host, email and IP check errors
-#define X509_V_ERR_HOSTNAME_MISMATCH 62
-#define X509_V_ERR_EMAIL_MISMATCH 63
-#define X509_V_ERR_IP_ADDRESS_MISMATCH 64
-
-// Caller error
-#define X509_V_ERR_INVALID_CALL 65
-// Issuer lookup error
-#define X509_V_ERR_STORE_LOOKUP 66
-
-#define X509_V_ERR_NAME_CONSTRAINTS_WITHOUT_SANS 67
-
-// Certificate verify flags
-
-// Send issuer+subject checks to verify_cb
-#define X509_V_FLAG_CB_ISSUER_CHECK 0x1
-// Use check time instead of current time
-#define X509_V_FLAG_USE_CHECK_TIME 0x2
-// Lookup CRLs
-#define X509_V_FLAG_CRL_CHECK 0x4
-// Lookup CRLs for whole chain
-#define X509_V_FLAG_CRL_CHECK_ALL 0x8
-// Ignore unhandled critical extensions
-#define X509_V_FLAG_IGNORE_CRITICAL 0x10
-// Does nothing as its functionality has been enabled by default.
-#define X509_V_FLAG_X509_STRICT 0x00
-// Enable proxy certificate validation
-#define X509_V_FLAG_ALLOW_PROXY_CERTS 0x40
-// Enable policy checking
-#define X509_V_FLAG_POLICY_CHECK 0x80
-// Policy variable require-explicit-policy
-#define X509_V_FLAG_EXPLICIT_POLICY 0x100
-// Policy variable inhibit-any-policy
-#define X509_V_FLAG_INHIBIT_ANY 0x200
-// Policy variable inhibit-policy-mapping
-#define X509_V_FLAG_INHIBIT_MAP 0x400
-// Notify callback that policy is OK
-#define X509_V_FLAG_NOTIFY_POLICY 0x800
-// Extended CRL features such as indirect CRLs, alternate CRL signing keys
-#define X509_V_FLAG_EXTENDED_CRL_SUPPORT 0x1000
-// Delta CRL support
-#define X509_V_FLAG_USE_DELTAS 0x2000
-// Check selfsigned CA signature
-#define X509_V_FLAG_CHECK_SS_SIGNATURE 0x4000
-// Use trusted store first
-#define X509_V_FLAG_TRUSTED_FIRST 0x8000
-// Suite B 128 bit only mode: not normally used
-#define X509_V_FLAG_SUITEB_128_LOS_ONLY 0x10000
-// Suite B 192 bit only mode
-#define X509_V_FLAG_SUITEB_192_LOS 0x20000
-// Suite B 128 bit mode allowing 192 bit algorithms
-#define X509_V_FLAG_SUITEB_128_LOS 0x30000
-
-// Allow partial chains if at least one certificate is in trusted store
-#define X509_V_FLAG_PARTIAL_CHAIN 0x80000
-
-// If the initial chain is not trusted, do not attempt to build an alternative
-// chain. Alternate chain checking was introduced in 1.0.2b. Setting this flag
-// will force the behaviour to match that of previous versions.
-#define X509_V_FLAG_NO_ALT_CHAINS 0x100000
-
-#define X509_VP_FLAG_DEFAULT 0x1
-#define X509_VP_FLAG_OVERWRITE 0x2
-#define X509_VP_FLAG_RESET_FLAGS 0x4
-#define X509_VP_FLAG_LOCKED 0x8
-#define X509_VP_FLAG_ONCE 0x10
-
-// Internal use: mask of policy related options
-#define X509_V_FLAG_POLICY_MASK                             \
-  (X509_V_FLAG_POLICY_CHECK | X509_V_FLAG_EXPLICIT_POLICY | \
-   X509_V_FLAG_INHIBIT_ANY | X509_V_FLAG_INHIBIT_MAP)
-
-OPENSSL_EXPORT int X509_OBJECT_idx_by_subject(STACK_OF(X509_OBJECT) *h,
-                                              int type, X509_NAME *name);
-OPENSSL_EXPORT X509_OBJECT *X509_OBJECT_retrieve_by_subject(
-    STACK_OF(X509_OBJECT) *h, int type, X509_NAME *name);
-OPENSSL_EXPORT X509_OBJECT *X509_OBJECT_retrieve_match(STACK_OF(X509_OBJECT) *h,
-                                                       X509_OBJECT *x);
-OPENSSL_EXPORT int X509_OBJECT_up_ref_count(X509_OBJECT *a);
-OPENSSL_EXPORT void X509_OBJECT_free_contents(X509_OBJECT *a);
-OPENSSL_EXPORT int X509_OBJECT_get_type(const X509_OBJECT *a);
-OPENSSL_EXPORT X509 *X509_OBJECT_get0_X509(const X509_OBJECT *a);
-OPENSSL_EXPORT X509_STORE *X509_STORE_new(void);
-OPENSSL_EXPORT int X509_STORE_up_ref(X509_STORE *store);
-OPENSSL_EXPORT void X509_STORE_free(X509_STORE *v);
-
-OPENSSL_EXPORT STACK_OF(X509_OBJECT) *X509_STORE_get0_objects(X509_STORE *st);
-OPENSSL_EXPORT STACK_OF(X509) *X509_STORE_get1_certs(X509_STORE_CTX *st,
-                                                     X509_NAME *nm);
-OPENSSL_EXPORT STACK_OF(X509_CRL) *X509_STORE_get1_crls(X509_STORE_CTX *st,
-                                                        X509_NAME *nm);
-OPENSSL_EXPORT int X509_STORE_set_flags(X509_STORE *ctx, unsigned long flags);
-OPENSSL_EXPORT int X509_STORE_set_purpose(X509_STORE *ctx, int purpose);
-OPENSSL_EXPORT int X509_STORE_set_trust(X509_STORE *ctx, int trust);
-OPENSSL_EXPORT int X509_STORE_set1_param(X509_STORE *ctx,
-                                         X509_VERIFY_PARAM *pm);
-OPENSSL_EXPORT X509_VERIFY_PARAM *X509_STORE_get0_param(X509_STORE *ctx);
-
-OPENSSL_EXPORT void X509_STORE_set_verify(X509_STORE *ctx,
-                                          X509_STORE_CTX_verify_fn verify);
-#define X509_STORE_set_verify_func(ctx, func) \
-  X509_STORE_set_verify((ctx), (func))
-OPENSSL_EXPORT void X509_STORE_CTX_set_verify(X509_STORE_CTX *ctx,
-                                              X509_STORE_CTX_verify_fn verify);
-OPENSSL_EXPORT X509_STORE_CTX_verify_fn X509_STORE_get_verify(X509_STORE *ctx);
-OPENSSL_EXPORT void X509_STORE_set_verify_cb(
-    X509_STORE *ctx, X509_STORE_CTX_verify_cb verify_cb);
-#define X509_STORE_set_verify_cb_func(ctx, func) \
-  X509_STORE_set_verify_cb((ctx), (func))
-OPENSSL_EXPORT X509_STORE_CTX_verify_cb
-X509_STORE_get_verify_cb(X509_STORE *ctx);
-OPENSSL_EXPORT void X509_STORE_set_get_issuer(
-    X509_STORE *ctx, X509_STORE_CTX_get_issuer_fn get_issuer);
-OPENSSL_EXPORT X509_STORE_CTX_get_issuer_fn
-X509_STORE_get_get_issuer(X509_STORE *ctx);
-OPENSSL_EXPORT void X509_STORE_set_check_issued(
-    X509_STORE *ctx, X509_STORE_CTX_check_issued_fn check_issued);
-OPENSSL_EXPORT X509_STORE_CTX_check_issued_fn
-X509_STORE_get_check_issued(X509_STORE *ctx);
-OPENSSL_EXPORT void X509_STORE_set_check_revocation(
-    X509_STORE *ctx, X509_STORE_CTX_check_revocation_fn check_revocation);
-OPENSSL_EXPORT X509_STORE_CTX_check_revocation_fn
-X509_STORE_get_check_revocation(X509_STORE *ctx);
-OPENSSL_EXPORT void X509_STORE_set_get_crl(X509_STORE *ctx,
-                                           X509_STORE_CTX_get_crl_fn get_crl);
-OPENSSL_EXPORT X509_STORE_CTX_get_crl_fn
-X509_STORE_get_get_crl(X509_STORE *ctx);
-OPENSSL_EXPORT void X509_STORE_set_check_crl(
-    X509_STORE *ctx, X509_STORE_CTX_check_crl_fn check_crl);
-OPENSSL_EXPORT X509_STORE_CTX_check_crl_fn
-X509_STORE_get_check_crl(X509_STORE *ctx);
-OPENSSL_EXPORT void X509_STORE_set_cert_crl(
-    X509_STORE *ctx, X509_STORE_CTX_cert_crl_fn cert_crl);
-OPENSSL_EXPORT X509_STORE_CTX_cert_crl_fn
-X509_STORE_get_cert_crl(X509_STORE *ctx);
-OPENSSL_EXPORT void X509_STORE_set_lookup_certs(
-    X509_STORE *ctx, X509_STORE_CTX_lookup_certs_fn lookup_certs);
-OPENSSL_EXPORT X509_STORE_CTX_lookup_certs_fn
-X509_STORE_get_lookup_certs(X509_STORE *ctx);
-OPENSSL_EXPORT void X509_STORE_set_lookup_crls(
-    X509_STORE *ctx, X509_STORE_CTX_lookup_crls_fn lookup_crls);
-#define X509_STORE_set_lookup_crls_cb(ctx, func) \
-  X509_STORE_set_lookup_crls((ctx), (func))
-OPENSSL_EXPORT X509_STORE_CTX_lookup_crls_fn
-X509_STORE_get_lookup_crls(X509_STORE *ctx);
-OPENSSL_EXPORT void X509_STORE_set_cleanup(X509_STORE *ctx,
-                                           X509_STORE_CTX_cleanup_fn cleanup);
-OPENSSL_EXPORT X509_STORE_CTX_cleanup_fn
-X509_STORE_get_cleanup(X509_STORE *ctx);
-
-
-OPENSSL_EXPORT X509_STORE_CTX *X509_STORE_CTX_new(void);
-
-OPENSSL_EXPORT int X509_STORE_CTX_get1_issuer(X509 **issuer,
-                                              X509_STORE_CTX *ctx, X509 *x);
-
-OPENSSL_EXPORT void X509_STORE_CTX_zero(X509_STORE_CTX *ctx);
-OPENSSL_EXPORT void X509_STORE_CTX_free(X509_STORE_CTX *ctx);
-OPENSSL_EXPORT int X509_STORE_CTX_init(X509_STORE_CTX *ctx, X509_STORE *store,
-                                       X509 *x509, STACK_OF(X509) *chain);
-OPENSSL_EXPORT void X509_STORE_CTX_trusted_stack(X509_STORE_CTX *ctx,
-                                                 STACK_OF(X509) *sk);
-OPENSSL_EXPORT void X509_STORE_CTX_cleanup(X509_STORE_CTX *ctx);
-
-OPENSSL_EXPORT X509_STORE *X509_STORE_CTX_get0_store(X509_STORE_CTX *ctx);
-OPENSSL_EXPORT X509 *X509_STORE_CTX_get0_cert(X509_STORE_CTX *ctx);
-
-OPENSSL_EXPORT X509_LOOKUP *X509_STORE_add_lookup(X509_STORE *v,
-                                                  X509_LOOKUP_METHOD *m);
-
-OPENSSL_EXPORT X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir(void);
-OPENSSL_EXPORT X509_LOOKUP_METHOD *X509_LOOKUP_file(void);
-
-OPENSSL_EXPORT int X509_STORE_add_cert(X509_STORE *ctx, X509 *x);
-OPENSSL_EXPORT int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x);
-
-OPENSSL_EXPORT int X509_STORE_get_by_subject(X509_STORE_CTX *vs, int type,
-                                             X509_NAME *name, X509_OBJECT *ret);
-
-OPENSSL_EXPORT int X509_LOOKUP_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc,
-                                    long argl, char **ret);
-
-#ifndef OPENSSL_NO_STDIO
-OPENSSL_EXPORT int X509_load_cert_file(X509_LOOKUP *ctx, const char *file,
-                                       int type);
-OPENSSL_EXPORT int X509_load_crl_file(X509_LOOKUP *ctx, const char *file,
-                                      int type);
-OPENSSL_EXPORT int X509_load_cert_crl_file(X509_LOOKUP *ctx, const char *file,
-                                           int type);
-#endif
-
-
-OPENSSL_EXPORT X509_LOOKUP *X509_LOOKUP_new(X509_LOOKUP_METHOD *method);
-OPENSSL_EXPORT void X509_LOOKUP_free(X509_LOOKUP *ctx);
-OPENSSL_EXPORT int X509_LOOKUP_init(X509_LOOKUP *ctx);
-OPENSSL_EXPORT int X509_LOOKUP_by_subject(X509_LOOKUP *ctx, int type,
-                                          X509_NAME *name, X509_OBJECT *ret);
-OPENSSL_EXPORT int X509_LOOKUP_by_issuer_serial(X509_LOOKUP *ctx, int type,
-                                                X509_NAME *name,
-                                                ASN1_INTEGER *serial,
-                                                X509_OBJECT *ret);
-OPENSSL_EXPORT int X509_LOOKUP_by_fingerprint(X509_LOOKUP *ctx, int type,
-                                              unsigned char *bytes, int len,
-                                              X509_OBJECT *ret);
-OPENSSL_EXPORT int X509_LOOKUP_by_alias(X509_LOOKUP *ctx, int type, char *str,
-                                        int len, X509_OBJECT *ret);
-OPENSSL_EXPORT int X509_LOOKUP_shutdown(X509_LOOKUP *ctx);
-
-#ifndef OPENSSL_NO_STDIO
-OPENSSL_EXPORT int X509_STORE_load_locations(X509_STORE *ctx, const char *file,
-                                             const char *dir);
-OPENSSL_EXPORT int X509_STORE_set_default_paths(X509_STORE *ctx);
-#endif
-
-OPENSSL_EXPORT int X509_STORE_CTX_get_ex_new_index(long argl, void *argp,
-                                                   CRYPTO_EX_unused *unused,
-                                                   CRYPTO_EX_dup *dup_unused,
-                                                   CRYPTO_EX_free *free_func);
-OPENSSL_EXPORT int X509_STORE_CTX_set_ex_data(X509_STORE_CTX *ctx, int idx,
-                                              void *data);
-OPENSSL_EXPORT void *X509_STORE_CTX_get_ex_data(X509_STORE_CTX *ctx, int idx);
-OPENSSL_EXPORT int X509_STORE_CTX_get_error(X509_STORE_CTX *ctx);
-OPENSSL_EXPORT void X509_STORE_CTX_set_error(X509_STORE_CTX *ctx, int s);
-OPENSSL_EXPORT int X509_STORE_CTX_get_error_depth(X509_STORE_CTX *ctx);
-OPENSSL_EXPORT X509 *X509_STORE_CTX_get_current_cert(X509_STORE_CTX *ctx);
-OPENSSL_EXPORT X509 *X509_STORE_CTX_get0_current_issuer(X509_STORE_CTX *ctx);
-OPENSSL_EXPORT X509_CRL *X509_STORE_CTX_get0_current_crl(X509_STORE_CTX *ctx);
-OPENSSL_EXPORT X509_STORE_CTX *X509_STORE_CTX_get0_parent_ctx(
-    X509_STORE_CTX *ctx);
-OPENSSL_EXPORT STACK_OF(X509) *X509_STORE_CTX_get_chain(X509_STORE_CTX *ctx);
-OPENSSL_EXPORT STACK_OF(X509) *X509_STORE_CTX_get0_chain(X509_STORE_CTX *ctx);
-OPENSSL_EXPORT STACK_OF(X509) *X509_STORE_CTX_get1_chain(X509_STORE_CTX *ctx);
-OPENSSL_EXPORT void X509_STORE_CTX_set_cert(X509_STORE_CTX *c, X509 *x);
-OPENSSL_EXPORT void X509_STORE_CTX_set_chain(X509_STORE_CTX *c,
-                                             STACK_OF(X509) *sk);
-OPENSSL_EXPORT STACK_OF(X509) *X509_STORE_CTX_get0_untrusted(
-    X509_STORE_CTX *ctx);
-OPENSSL_EXPORT void X509_STORE_CTX_set0_crls(X509_STORE_CTX *c,
-                                             STACK_OF(X509_CRL) *sk);
-OPENSSL_EXPORT int X509_STORE_CTX_set_purpose(X509_STORE_CTX *ctx, int purpose);
-OPENSSL_EXPORT int X509_STORE_CTX_set_trust(X509_STORE_CTX *ctx, int trust);
-OPENSSL_EXPORT int X509_STORE_CTX_purpose_inherit(X509_STORE_CTX *ctx,
-                                                  int def_purpose, int purpose,
-                                                  int trust);
-OPENSSL_EXPORT void X509_STORE_CTX_set_flags(X509_STORE_CTX *ctx,
-                                             unsigned long flags);
-OPENSSL_EXPORT void X509_STORE_CTX_set_time(X509_STORE_CTX *ctx,
-                                            unsigned long flags, time_t t);
-OPENSSL_EXPORT void X509_STORE_CTX_set_verify_cb(
-    X509_STORE_CTX *ctx, int (*verify_cb)(int, X509_STORE_CTX *));
-
-OPENSSL_EXPORT X509_POLICY_TREE *X509_STORE_CTX_get0_policy_tree(
-    X509_STORE_CTX *ctx);
-OPENSSL_EXPORT int X509_STORE_CTX_get_explicit_policy(X509_STORE_CTX *ctx);
-
-OPENSSL_EXPORT X509_VERIFY_PARAM *X509_STORE_CTX_get0_param(
-    X509_STORE_CTX *ctx);
-OPENSSL_EXPORT void X509_STORE_CTX_set0_param(X509_STORE_CTX *ctx,
-                                              X509_VERIFY_PARAM *param);
-OPENSSL_EXPORT int X509_STORE_CTX_set_default(X509_STORE_CTX *ctx,
-                                              const char *name);
-
-// X509_VERIFY_PARAM functions
-
-OPENSSL_EXPORT X509_VERIFY_PARAM *X509_VERIFY_PARAM_new(void);
-OPENSSL_EXPORT void X509_VERIFY_PARAM_free(X509_VERIFY_PARAM *param);
-OPENSSL_EXPORT int X509_VERIFY_PARAM_inherit(X509_VERIFY_PARAM *to,
-                                             const X509_VERIFY_PARAM *from);
-OPENSSL_EXPORT int X509_VERIFY_PARAM_set1(X509_VERIFY_PARAM *to,
-                                          const X509_VERIFY_PARAM *from);
-OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_name(X509_VERIFY_PARAM *param,
-                                               const char *name);
-OPENSSL_EXPORT int X509_VERIFY_PARAM_set_flags(X509_VERIFY_PARAM *param,
-                                               unsigned long flags);
-OPENSSL_EXPORT int X509_VERIFY_PARAM_clear_flags(X509_VERIFY_PARAM *param,
-                                                 unsigned long flags);
-OPENSSL_EXPORT unsigned long X509_VERIFY_PARAM_get_flags(
-    X509_VERIFY_PARAM *param);
-OPENSSL_EXPORT int X509_VERIFY_PARAM_set_purpose(X509_VERIFY_PARAM *param,
-                                                 int purpose);
-OPENSSL_EXPORT int X509_VERIFY_PARAM_set_trust(X509_VERIFY_PARAM *param,
-                                               int trust);
-OPENSSL_EXPORT void X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM *param,
-                                                int depth);
-OPENSSL_EXPORT void X509_VERIFY_PARAM_set_time(X509_VERIFY_PARAM *param,
-                                               time_t t);
-OPENSSL_EXPORT int X509_VERIFY_PARAM_add0_policy(X509_VERIFY_PARAM *param,
-                                                 ASN1_OBJECT *policy);
-OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_policies(
-    X509_VERIFY_PARAM *param, STACK_OF(ASN1_OBJECT) *policies);
-
-OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_host(X509_VERIFY_PARAM *param,
-                                               const char *name,
-                                               size_t namelen);
-OPENSSL_EXPORT int X509_VERIFY_PARAM_add1_host(X509_VERIFY_PARAM *param,
-                                               const char *name,
-                                               size_t namelen);
-OPENSSL_EXPORT void X509_VERIFY_PARAM_set_hostflags(X509_VERIFY_PARAM *param,
-                                                    unsigned int flags);
-OPENSSL_EXPORT char *X509_VERIFY_PARAM_get0_peername(X509_VERIFY_PARAM *);
-OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_email(X509_VERIFY_PARAM *param,
-                                                const char *email,
-                                                size_t emaillen);
-OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_ip(X509_VERIFY_PARAM *param,
-                                             const unsigned char *ip,
-                                             size_t iplen);
-OPENSSL_EXPORT int X509_VERIFY_PARAM_set1_ip_asc(X509_VERIFY_PARAM *param,
-                                                 const char *ipasc);
-
-OPENSSL_EXPORT int X509_VERIFY_PARAM_get_depth(const X509_VERIFY_PARAM *param);
-OPENSSL_EXPORT const char *X509_VERIFY_PARAM_get0_name(
-    const X509_VERIFY_PARAM *param);
-
-OPENSSL_EXPORT int X509_VERIFY_PARAM_add0_table(X509_VERIFY_PARAM *param);
-OPENSSL_EXPORT int X509_VERIFY_PARAM_get_count(void);
-OPENSSL_EXPORT const X509_VERIFY_PARAM *X509_VERIFY_PARAM_get0(int id);
-OPENSSL_EXPORT const X509_VERIFY_PARAM *X509_VERIFY_PARAM_lookup(
-    const char *name);
-OPENSSL_EXPORT void X509_VERIFY_PARAM_table_cleanup(void);
-
-OPENSSL_EXPORT int X509_policy_check(X509_POLICY_TREE **ptree,
-                                     int *pexplicit_policy,
-                                     STACK_OF(X509) *certs,
-                                     STACK_OF(ASN1_OBJECT) *policy_oids,
-                                     unsigned int flags);
-
-OPENSSL_EXPORT void X509_policy_tree_free(X509_POLICY_TREE *tree);
-
-OPENSSL_EXPORT int X509_policy_tree_level_count(const X509_POLICY_TREE *tree);
-OPENSSL_EXPORT X509_POLICY_LEVEL *X509_policy_tree_get0_level(
-    const X509_POLICY_TREE *tree, int i);
-
-OPENSSL_EXPORT STACK_OF(X509_POLICY_NODE) *X509_policy_tree_get0_policies(
-    const X509_POLICY_TREE *tree);
-
-OPENSSL_EXPORT STACK_OF(X509_POLICY_NODE) *X509_policy_tree_get0_user_policies(
-    const X509_POLICY_TREE *tree);
-
-OPENSSL_EXPORT int X509_policy_level_node_count(X509_POLICY_LEVEL *level);
-
-OPENSSL_EXPORT X509_POLICY_NODE *X509_policy_level_get0_node(
-    X509_POLICY_LEVEL *level, int i);
-
-OPENSSL_EXPORT const ASN1_OBJECT *X509_policy_node_get0_policy(
-    const X509_POLICY_NODE *node);
-
-OPENSSL_EXPORT STACK_OF(POLICYQUALINFO) *X509_policy_node_get0_qualifiers(
-    const X509_POLICY_NODE *node);
-OPENSSL_EXPORT const X509_POLICY_NODE *X509_policy_node_get0_parent(
-    const X509_POLICY_NODE *node);
-
-#ifdef __cplusplus
-}
-#endif
-#endif
+#include "x509.h"
diff --git a/ssl/ssl_x509.cc b/ssl/ssl_x509.cc
index 680f253..26eb90a 100644
--- a/ssl/ssl_x509.cc
+++ b/ssl/ssl_x509.cc
@@ -149,7 +149,6 @@
 #include <openssl/stack.h>
 #include <openssl/x509.h>
 #include <openssl/x509v3.h>
-#include <openssl/x509_vfy.h>
 
 #include "internal.h"
 #include "../crypto/internal.h"