crypto/x509/x_all.cc - boringssl.git - Git at Google

 // Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     https://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.

 #include <openssl/x509.h>

 #include <limits.h>

 #include <openssl/asn1.h>
 #include <openssl/digest.h>
 #include <openssl/dsa.h>
 #include <openssl/evp.h>
 #include <openssl/mem.h>
 #include <openssl/rsa.h>
 #include <openssl/stack.h>

 #include "../asn1/internal.h"
 #include "internal.h"


 int X509_verify(X509 *x509, EVP_PKEY *pkey) {
   if (X509_ALGOR_cmp(x509->sig_alg, x509->cert_info->signature)) {
     OPENSSL_PUT_ERROR(X509, X509_R_SIGNATURE_ALGORITHM_MISMATCH);
     return 0;
   }
   return ASN1_item_verify(ASN1_ITEM_rptr(X509_CINF), x509->sig_alg,
                           x509->signature, x509->cert_info, pkey);
 }

 int X509_REQ_verify(X509_REQ *req, EVP_PKEY *pkey) {
   return ASN1_item_verify(ASN1_ITEM_rptr(X509_REQ_INFO), req->sig_alg,
                           req->signature, req->req_info, pkey);
 }

 int X509_sign(X509 *x, EVP_PKEY *pkey, const EVP_MD *md) {
   asn1_encoding_clear(&x->cert_info->enc);
   return (ASN1_item_sign(ASN1_ITEM_rptr(X509_CINF), x->cert_info->signature,
                          x->sig_alg, x->signature, x->cert_info, pkey, md));
 }

 int X509_sign_ctx(X509 *x, EVP_MD_CTX *ctx) {
   asn1_encoding_clear(&x->cert_info->enc);
   return ASN1_item_sign_ctx(ASN1_ITEM_rptr(X509_CINF), x->cert_info->signature,
                             x->sig_alg, x->signature, x->cert_info, ctx);
 }

 int X509_REQ_sign(X509_REQ *x, EVP_PKEY *pkey, const EVP_MD *md) {
   asn1_encoding_clear(&x->req_info->enc);
   return (ASN1_item_sign(ASN1_ITEM_rptr(X509_REQ_INFO), x->sig_alg, NULL,
                          x->signature, x->req_info, pkey, md));
 }

 int X509_REQ_sign_ctx(X509_REQ *x, EVP_MD_CTX *ctx) {
   asn1_encoding_clear(&x->req_info->enc);
   return ASN1_item_sign_ctx(ASN1_ITEM_rptr(X509_REQ_INFO), x->sig_alg, NULL,
                             x->signature, x->req_info, ctx);
 }

 int X509_CRL_sign(X509_CRL *x, EVP_PKEY *pkey, const EVP_MD *md) {
   asn1_encoding_clear(&x->crl->enc);
   return (ASN1_item_sign(ASN1_ITEM_rptr(X509_CRL_INFO), x->crl->sig_alg,
                          x->sig_alg, x->signature, x->crl, pkey, md));
 }

 int X509_CRL_sign_ctx(X509_CRL *x, EVP_MD_CTX *ctx) {
   asn1_encoding_clear(&x->crl->enc);
   return ASN1_item_sign_ctx(ASN1_ITEM_rptr(X509_CRL_INFO), x->crl->sig_alg,
                             x->sig_alg, x->signature, x->crl, ctx);
 }

 int NETSCAPE_SPKI_sign(NETSCAPE_SPKI *x, EVP_PKEY *pkey, const EVP_MD *md) {
   return (ASN1_item_sign(ASN1_ITEM_rptr(NETSCAPE_SPKAC), x->sig_algor, NULL,
                          x->signature, x->spkac, pkey, md));
 }

 int NETSCAPE_SPKI_verify(NETSCAPE_SPKI *spki, EVP_PKEY *pkey) {
   return (ASN1_item_verify(ASN1_ITEM_rptr(NETSCAPE_SPKAC), spki->sig_algor,
                            spki->signature, spki->spkac, pkey));
 }

 X509_CRL *d2i_X509_CRL_fp(FILE *fp, X509_CRL **crl) {
   return reinterpret_cast<X509_CRL *>(
       ASN1_item_d2i_fp(ASN1_ITEM_rptr(X509_CRL), fp, crl));
 }

 int i2d_X509_CRL_fp(FILE *fp, X509_CRL *crl) {
   return ASN1_item_i2d_fp(ASN1_ITEM_rptr(X509_CRL), fp, crl);
 }

 X509_CRL *d2i_X509_CRL_bio(BIO *bp, X509_CRL **crl) {
   return reinterpret_cast<X509_CRL *>(
       ASN1_item_d2i_bio(ASN1_ITEM_rptr(X509_CRL), bp, crl));
 }

 int i2d_X509_CRL_bio(BIO *bp, X509_CRL *crl) {
   return ASN1_item_i2d_bio(ASN1_ITEM_rptr(X509_CRL), bp, crl);
 }

 X509_REQ *d2i_X509_REQ_fp(FILE *fp, X509_REQ **req) {
   return reinterpret_cast<X509_REQ *>(
       ASN1_item_d2i_fp(ASN1_ITEM_rptr(X509_REQ), fp, req));
 }

 int i2d_X509_REQ_fp(FILE *fp, X509_REQ *req) {
   return ASN1_item_i2d_fp(ASN1_ITEM_rptr(X509_REQ), fp, req);
 }

 X509_REQ *d2i_X509_REQ_bio(BIO *bp, X509_REQ **req) {
   return reinterpret_cast<X509_REQ *>(
       ASN1_item_d2i_bio(ASN1_ITEM_rptr(X509_REQ), bp, req));
 }

 int i2d_X509_REQ_bio(BIO *bp, X509_REQ *req) {
   return ASN1_item_i2d_bio(ASN1_ITEM_rptr(X509_REQ), bp, req);
 }


 #define IMPLEMENT_D2I_FP(type, name, bio_func) \
   type *name(FILE *fp, type **obj) {           \
     BIO *bio = BIO_new_fp(fp, BIO_NOCLOSE);    \
     if (bio == NULL) {                         \
       return NULL;                             \
     }                                          \
     type *ret = bio_func(bio, obj);            \
     BIO_free(bio);                             \
     return ret;                                \
   }

 #define IMPLEMENT_I2D_FP(type, name, bio_func) \
   int name(FILE *fp, type *obj) {              \
     BIO *bio = BIO_new_fp(fp, BIO_NOCLOSE);    \
     if (bio == NULL) {                         \
       return 0;                                \
     }                                          \
     int ret = bio_func(bio, obj);              \
     BIO_free(bio);                             \
     return ret;                                \
   }

 IMPLEMENT_D2I_FP(X509, d2i_X509_fp, d2i_X509_bio)
 IMPLEMENT_I2D_FP(X509, i2d_X509_fp, i2d_X509_bio)

 IMPLEMENT_D2I_FP(RSA, d2i_RSAPrivateKey_fp, d2i_RSAPrivateKey_bio)
 IMPLEMENT_I2D_FP(RSA, i2d_RSAPrivateKey_fp, i2d_RSAPrivateKey_bio)

 IMPLEMENT_D2I_FP(RSA, d2i_RSAPublicKey_fp, d2i_RSAPublicKey_bio)
 IMPLEMENT_I2D_FP(RSA, i2d_RSAPublicKey_fp, i2d_RSAPublicKey_bio)

 IMPLEMENT_D2I_FP(RSA, d2i_RSA_PUBKEY_fp, d2i_RSA_PUBKEY_bio)
 IMPLEMENT_I2D_FP(RSA, i2d_RSA_PUBKEY_fp, i2d_RSA_PUBKEY_bio)

 #define IMPLEMENT_D2I_BIO(type, name, d2i_func)         \
   type *name(BIO *bio, type **obj) {                    \
     uint8_t *data;                                      \
     size_t len;                                         \
     if (!BIO_read_asn1(bio, &data, &len, 100 * 1024)) { \
       return NULL;                                      \
     }                                                   \
     const uint8_t *ptr = data;                          \
     type *ret = d2i_func(obj, &ptr, (long)len);         \
     OPENSSL_free(data);                                 \
     return ret;                                         \
   }

 #define IMPLEMENT_I2D_BIO(type, name, i2d_func) \
   int name(BIO *bio, type *obj) {               \
     uint8_t *data = NULL;                       \
     int len = i2d_func(obj, &data);             \
     if (len < 0) {                              \
       return 0;                                 \
     }                                           \
     int ret = BIO_write_all(bio, data, len);    \
     OPENSSL_free(data);                         \
     return ret;                                 \
   }

 IMPLEMENT_D2I_BIO(X509, d2i_X509_bio, d2i_X509)
 IMPLEMENT_I2D_BIO(X509, i2d_X509_bio, i2d_X509)

 IMPLEMENT_D2I_BIO(RSA, d2i_RSAPrivateKey_bio, d2i_RSAPrivateKey)
 IMPLEMENT_I2D_BIO(RSA, i2d_RSAPrivateKey_bio, i2d_RSAPrivateKey)

 IMPLEMENT_D2I_BIO(RSA, d2i_RSAPublicKey_bio, d2i_RSAPublicKey)
 IMPLEMENT_I2D_BIO(RSA, i2d_RSAPublicKey_bio, i2d_RSAPublicKey)

 IMPLEMENT_D2I_BIO(RSA, d2i_RSA_PUBKEY_bio, d2i_RSA_PUBKEY)
 IMPLEMENT_I2D_BIO(RSA, i2d_RSA_PUBKEY_bio, i2d_RSA_PUBKEY)

 IMPLEMENT_D2I_FP(DSA, d2i_DSAPrivateKey_fp, d2i_DSAPrivateKey_bio)
 IMPLEMENT_I2D_FP(DSA, i2d_DSAPrivateKey_fp, i2d_DSAPrivateKey_bio)

 IMPLEMENT_D2I_FP(DSA, d2i_DSA_PUBKEY_fp, d2i_DSA_PUBKEY_bio)
 IMPLEMENT_I2D_FP(DSA, i2d_DSA_PUBKEY_fp, i2d_DSA_PUBKEY_bio)

 IMPLEMENT_D2I_BIO(DSA, d2i_DSAPrivateKey_bio, d2i_DSAPrivateKey)
 IMPLEMENT_I2D_BIO(DSA, i2d_DSAPrivateKey_bio, i2d_DSAPrivateKey)

 IMPLEMENT_D2I_BIO(DSA, d2i_DSA_PUBKEY_bio, d2i_DSA_PUBKEY)
 IMPLEMENT_I2D_BIO(DSA, i2d_DSA_PUBKEY_bio, i2d_DSA_PUBKEY)

 IMPLEMENT_D2I_FP(EC_KEY, d2i_ECPrivateKey_fp, d2i_ECPrivateKey_bio)
 IMPLEMENT_I2D_FP(EC_KEY, i2d_ECPrivateKey_fp, i2d_ECPrivateKey_bio)

 IMPLEMENT_D2I_FP(EC_KEY, d2i_EC_PUBKEY_fp, d2i_EC_PUBKEY_bio)
 IMPLEMENT_I2D_FP(EC_KEY, i2d_EC_PUBKEY_fp, i2d_EC_PUBKEY_bio)

 IMPLEMENT_D2I_BIO(EC_KEY, d2i_ECPrivateKey_bio, d2i_ECPrivateKey)
 IMPLEMENT_I2D_BIO(EC_KEY, i2d_ECPrivateKey_bio, i2d_ECPrivateKey)

 IMPLEMENT_D2I_BIO(EC_KEY, d2i_EC_PUBKEY_bio, d2i_EC_PUBKEY)
 IMPLEMENT_I2D_BIO(EC_KEY, i2d_EC_PUBKEY_bio, i2d_EC_PUBKEY)

 int X509_pubkey_digest(const X509 *data, const EVP_MD *type, unsigned char *md,
                        unsigned int *len) {
   ASN1_BIT_STRING *key;
   key = X509_get0_pubkey_bitstr(data);
   if (!key) {
     return 0;
   }
   return EVP_Digest(key->data, key->length, md, len, type, NULL);
 }

 int X509_digest(const X509 *x509, const EVP_MD *md, uint8_t *out,
                 unsigned *out_len) {
   uint8_t *der = NULL;
   // TODO(https://crbug.com/boringssl/407): This function is not const-correct.
   int der_len = i2d_X509((X509 *)x509, &der);
   if (der_len < 0) {
     return 0;
   }

   int ret = EVP_Digest(der, der_len, out, out_len, md, NULL);
   OPENSSL_free(der);
   return ret;
 }

 int X509_CRL_digest(const X509_CRL *data, const EVP_MD *type, unsigned char *md,
                     unsigned int *len) {
   return (
       ASN1_item_digest(ASN1_ITEM_rptr(X509_CRL), type, (char *)data, md, len));
 }

 int X509_REQ_digest(const X509_REQ *data, const EVP_MD *type, unsigned char *md,
                     unsigned int *len) {
   return (
       ASN1_item_digest(ASN1_ITEM_rptr(X509_REQ), type, (char *)data, md, len));
 }

 int X509_NAME_digest(const X509_NAME *data, const EVP_MD *type,
                      unsigned char *md, unsigned int *len) {
   return (
       ASN1_item_digest(ASN1_ITEM_rptr(X509_NAME), type, (char *)data, md, len));
 }

 IMPLEMENT_D2I_FP(X509_SIG, d2i_PKCS8_fp, d2i_PKCS8_bio)
 IMPLEMENT_I2D_FP(X509_SIG, i2d_PKCS8_fp, i2d_PKCS8_bio)

 IMPLEMENT_D2I_BIO(X509_SIG, d2i_PKCS8_bio, d2i_X509_SIG)
 IMPLEMENT_I2D_BIO(X509_SIG, i2d_PKCS8_bio, i2d_X509_SIG)

 IMPLEMENT_D2I_FP(PKCS8_PRIV_KEY_INFO, d2i_PKCS8_PRIV_KEY_INFO_fp,
                  d2i_PKCS8_PRIV_KEY_INFO_bio)
 IMPLEMENT_I2D_FP(PKCS8_PRIV_KEY_INFO, i2d_PKCS8_PRIV_KEY_INFO_fp,
                  i2d_PKCS8_PRIV_KEY_INFO_bio)

 int i2d_PKCS8PrivateKeyInfo_fp(FILE *fp, EVP_PKEY *key) {
   PKCS8_PRIV_KEY_INFO *p8inf;
   int ret;
   p8inf = EVP_PKEY2PKCS8(key);
   if (!p8inf) {
     return 0;
   }
   ret = i2d_PKCS8_PRIV_KEY_INFO_fp(fp, p8inf);
   PKCS8_PRIV_KEY_INFO_free(p8inf);
   return ret;
 }

 IMPLEMENT_D2I_FP(EVP_PKEY, d2i_PrivateKey_fp, d2i_PrivateKey_bio)
 IMPLEMENT_I2D_FP(EVP_PKEY, i2d_PrivateKey_fp, i2d_PrivateKey_bio)

 IMPLEMENT_D2I_FP(EVP_PKEY, d2i_PUBKEY_fp, d2i_PUBKEY_bio)
 IMPLEMENT_I2D_FP(EVP_PKEY, i2d_PUBKEY_fp, i2d_PUBKEY_bio)

 IMPLEMENT_D2I_BIO(PKCS8_PRIV_KEY_INFO, d2i_PKCS8_PRIV_KEY_INFO_bio,
                   d2i_PKCS8_PRIV_KEY_INFO)
 IMPLEMENT_I2D_BIO(PKCS8_PRIV_KEY_INFO, i2d_PKCS8_PRIV_KEY_INFO_bio,
                   i2d_PKCS8_PRIV_KEY_INFO)

 int i2d_PKCS8PrivateKeyInfo_bio(BIO *bp, EVP_PKEY *key) {
   PKCS8_PRIV_KEY_INFO *p8inf;
   int ret;
   p8inf = EVP_PKEY2PKCS8(key);
   if (!p8inf) {
     return 0;
   }
   ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf);
   PKCS8_PRIV_KEY_INFO_free(p8inf);
   return ret;
 }

 IMPLEMENT_D2I_BIO(EVP_PKEY, d2i_PrivateKey_bio, d2i_AutoPrivateKey)
 IMPLEMENT_I2D_BIO(EVP_PKEY, i2d_PrivateKey_bio, i2d_PrivateKey)

 IMPLEMENT_D2I_BIO(EVP_PKEY, d2i_PUBKEY_bio, d2i_PUBKEY)
 IMPLEMENT_I2D_BIO(EVP_PKEY, i2d_PUBKEY_bio, i2d_PUBKEY)

 IMPLEMENT_D2I_BIO(DH, d2i_DHparams_bio, d2i_DHparams)
 IMPLEMENT_I2D_BIO(const DH, i2d_DHparams_bio, i2d_DHparams)
	// Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
	//
	// Licensed under the Apache License, Version 2.0 (the "License");
	// you may not use this file except in compliance with the License.
	// You may obtain a copy of the License at
	//
	// https://www.apache.org/licenses/LICENSE-2.0
	//
	// Unless required by applicable law or agreed to in writing, software
	// distributed under the License is distributed on an "AS IS" BASIS,
	// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	// See the License for the specific language governing permissions and
	// limitations under the License.

	#include <openssl/x509.h>

	#include <limits.h>

	#include <openssl/asn1.h>
	#include <openssl/digest.h>
	#include <openssl/dsa.h>
	#include <openssl/evp.h>
	#include <openssl/mem.h>
	#include <openssl/rsa.h>
	#include <openssl/stack.h>

	#include "../asn1/internal.h"
	#include "internal.h"


	int X509_verify(X509 x509, EVP_PKEY pkey) {
	if (X509_ALGOR_cmp(x509->sig_alg, x509->cert_info->signature)) {
	OPENSSL_PUT_ERROR(X509, X509_R_SIGNATURE_ALGORITHM_MISMATCH);
	return 0;
	}
	return ASN1_item_verify(ASN1_ITEM_rptr(X509_CINF), x509->sig_alg,
	x509->signature, x509->cert_info, pkey);
	}

	int X509_REQ_verify(X509_REQ req, EVP_PKEY pkey) {
	return ASN1_item_verify(ASN1_ITEM_rptr(X509_REQ_INFO), req->sig_alg,
	req->signature, req->req_info, pkey);
	}

	int X509_sign(X509 x, EVP_PKEY pkey, const EVP_MD *md) {
	asn1_encoding_clear(&x->cert_info->enc);
	return (ASN1_item_sign(ASN1_ITEM_rptr(X509_CINF), x->cert_info->signature,
	x->sig_alg, x->signature, x->cert_info, pkey, md));
	}

	int X509_sign_ctx(X509 x, EVP_MD_CTX ctx) {
	asn1_encoding_clear(&x->cert_info->enc);
	return ASN1_item_sign_ctx(ASN1_ITEM_rptr(X509_CINF), x->cert_info->signature,
	x->sig_alg, x->signature, x->cert_info, ctx);
	}

	int X509_REQ_sign(X509_REQ x, EVP_PKEY pkey, const EVP_MD *md) {
	asn1_encoding_clear(&x->req_info->enc);
	return (ASN1_item_sign(ASN1_ITEM_rptr(X509_REQ_INFO), x->sig_alg, NULL,
	x->signature, x->req_info, pkey, md));
	}

	int X509_REQ_sign_ctx(X509_REQ x, EVP_MD_CTX ctx) {
	asn1_encoding_clear(&x->req_info->enc);
	return ASN1_item_sign_ctx(ASN1_ITEM_rptr(X509_REQ_INFO), x->sig_alg, NULL,
	x->signature, x->req_info, ctx);
	}

	int X509_CRL_sign(X509_CRL x, EVP_PKEY pkey, const EVP_MD *md) {
	asn1_encoding_clear(&x->crl->enc);
	return (ASN1_item_sign(ASN1_ITEM_rptr(X509_CRL_INFO), x->crl->sig_alg,
	x->sig_alg, x->signature, x->crl, pkey, md));
	}

	int X509_CRL_sign_ctx(X509_CRL x, EVP_MD_CTX ctx) {
	asn1_encoding_clear(&x->crl->enc);
	return ASN1_item_sign_ctx(ASN1_ITEM_rptr(X509_CRL_INFO), x->crl->sig_alg,
	x->sig_alg, x->signature, x->crl, ctx);
	}

	int NETSCAPE_SPKI_sign(NETSCAPE_SPKI x, EVP_PKEY pkey, const EVP_MD *md) {
	return (ASN1_item_sign(ASN1_ITEM_rptr(NETSCAPE_SPKAC), x->sig_algor, NULL,
	x->signature, x->spkac, pkey, md));
	}

	int NETSCAPE_SPKI_verify(NETSCAPE_SPKI spki, EVP_PKEY pkey) {
	return (ASN1_item_verify(ASN1_ITEM_rptr(NETSCAPE_SPKAC), spki->sig_algor,
	spki->signature, spki->spkac, pkey));
	}

	X509_CRL d2i_X509_CRL_fp(FILE fp, X509_CRL **crl) {
	return reinterpret_cast<X509_CRL *>(
	ASN1_item_d2i_fp(ASN1_ITEM_rptr(X509_CRL), fp, crl));
	}

	int i2d_X509_CRL_fp(FILE fp, X509_CRL crl) {
	return ASN1_item_i2d_fp(ASN1_ITEM_rptr(X509_CRL), fp, crl);
	}

	X509_CRL d2i_X509_CRL_bio(BIO bp, X509_CRL **crl) {
	return reinterpret_cast<X509_CRL *>(
	ASN1_item_d2i_bio(ASN1_ITEM_rptr(X509_CRL), bp, crl));
	}

	int i2d_X509_CRL_bio(BIO bp, X509_CRL crl) {
	return ASN1_item_i2d_bio(ASN1_ITEM_rptr(X509_CRL), bp, crl);
	}

	X509_REQ d2i_X509_REQ_fp(FILE fp, X509_REQ **req) {
	return reinterpret_cast<X509_REQ *>(
	ASN1_item_d2i_fp(ASN1_ITEM_rptr(X509_REQ), fp, req));
	}

	int i2d_X509_REQ_fp(FILE fp, X509_REQ req) {
	return ASN1_item_i2d_fp(ASN1_ITEM_rptr(X509_REQ), fp, req);
	}

	X509_REQ d2i_X509_REQ_bio(BIO bp, X509_REQ **req) {
	return reinterpret_cast<X509_REQ *>(
	ASN1_item_d2i_bio(ASN1_ITEM_rptr(X509_REQ), bp, req));
	}

	int i2d_X509_REQ_bio(BIO bp, X509_REQ req) {
	return ASN1_item_i2d_bio(ASN1_ITEM_rptr(X509_REQ), bp, req);
	}


	#define IMPLEMENT_D2I_FP(type, name, bio_func) \
	type name(FILE fp, type **obj) { \
	BIO *bio = BIO_new_fp(fp, BIO_NOCLOSE); \
	if (bio == NULL) { \
	return NULL; \
	} \
	type *ret = bio_func(bio, obj); \
	BIO_free(bio); \
	return ret; \
	}

	#define IMPLEMENT_I2D_FP(type, name, bio_func) \
	int name(FILE fp, type obj) { \
	BIO *bio = BIO_new_fp(fp, BIO_NOCLOSE); \
	if (bio == NULL) { \
	return 0; \
	} \
	int ret = bio_func(bio, obj); \
	BIO_free(bio); \
	return ret; \
	}

	IMPLEMENT_D2I_FP(X509, d2i_X509_fp, d2i_X509_bio)
	IMPLEMENT_I2D_FP(X509, i2d_X509_fp, i2d_X509_bio)

	IMPLEMENT_D2I_FP(RSA, d2i_RSAPrivateKey_fp, d2i_RSAPrivateKey_bio)
	IMPLEMENT_I2D_FP(RSA, i2d_RSAPrivateKey_fp, i2d_RSAPrivateKey_bio)

	IMPLEMENT_D2I_FP(RSA, d2i_RSAPublicKey_fp, d2i_RSAPublicKey_bio)
	IMPLEMENT_I2D_FP(RSA, i2d_RSAPublicKey_fp, i2d_RSAPublicKey_bio)

	IMPLEMENT_D2I_FP(RSA, d2i_RSA_PUBKEY_fp, d2i_RSA_PUBKEY_bio)
	IMPLEMENT_I2D_FP(RSA, i2d_RSA_PUBKEY_fp, i2d_RSA_PUBKEY_bio)

	#define IMPLEMENT_D2I_BIO(type, name, d2i_func) \
	type name(BIO bio, type **obj) { \
	uint8_t *data; \
	size_t len; \
	if (!BIO_read_asn1(bio, &data, &len, 100 * 1024)) { \
	return NULL; \
	} \
	const uint8_t *ptr = data; \
	type *ret = d2i_func(obj, &ptr, (long)len); \
	OPENSSL_free(data); \
	return ret; \
	}

	#define IMPLEMENT_I2D_BIO(type, name, i2d_func) \
	int name(BIO bio, type obj) { \
	uint8_t *data = NULL; \
	int len = i2d_func(obj, &data); \
	if (len < 0) { \
	return 0; \
	} \
	int ret = BIO_write_all(bio, data, len); \
	OPENSSL_free(data); \
	return ret; \
	}

	IMPLEMENT_D2I_BIO(X509, d2i_X509_bio, d2i_X509)
	IMPLEMENT_I2D_BIO(X509, i2d_X509_bio, i2d_X509)

	IMPLEMENT_D2I_BIO(RSA, d2i_RSAPrivateKey_bio, d2i_RSAPrivateKey)
	IMPLEMENT_I2D_BIO(RSA, i2d_RSAPrivateKey_bio, i2d_RSAPrivateKey)

	IMPLEMENT_D2I_BIO(RSA, d2i_RSAPublicKey_bio, d2i_RSAPublicKey)
	IMPLEMENT_I2D_BIO(RSA, i2d_RSAPublicKey_bio, i2d_RSAPublicKey)

	IMPLEMENT_D2I_BIO(RSA, d2i_RSA_PUBKEY_bio, d2i_RSA_PUBKEY)
	IMPLEMENT_I2D_BIO(RSA, i2d_RSA_PUBKEY_bio, i2d_RSA_PUBKEY)

	IMPLEMENT_D2I_FP(DSA, d2i_DSAPrivateKey_fp, d2i_DSAPrivateKey_bio)
	IMPLEMENT_I2D_FP(DSA, i2d_DSAPrivateKey_fp, i2d_DSAPrivateKey_bio)

	IMPLEMENT_D2I_FP(DSA, d2i_DSA_PUBKEY_fp, d2i_DSA_PUBKEY_bio)
	IMPLEMENT_I2D_FP(DSA, i2d_DSA_PUBKEY_fp, i2d_DSA_PUBKEY_bio)

	IMPLEMENT_D2I_BIO(DSA, d2i_DSAPrivateKey_bio, d2i_DSAPrivateKey)
	IMPLEMENT_I2D_BIO(DSA, i2d_DSAPrivateKey_bio, i2d_DSAPrivateKey)

	IMPLEMENT_D2I_BIO(DSA, d2i_DSA_PUBKEY_bio, d2i_DSA_PUBKEY)
	IMPLEMENT_I2D_BIO(DSA, i2d_DSA_PUBKEY_bio, i2d_DSA_PUBKEY)

	IMPLEMENT_D2I_FP(EC_KEY, d2i_ECPrivateKey_fp, d2i_ECPrivateKey_bio)
	IMPLEMENT_I2D_FP(EC_KEY, i2d_ECPrivateKey_fp, i2d_ECPrivateKey_bio)

	IMPLEMENT_D2I_FP(EC_KEY, d2i_EC_PUBKEY_fp, d2i_EC_PUBKEY_bio)
	IMPLEMENT_I2D_FP(EC_KEY, i2d_EC_PUBKEY_fp, i2d_EC_PUBKEY_bio)

	IMPLEMENT_D2I_BIO(EC_KEY, d2i_ECPrivateKey_bio, d2i_ECPrivateKey)
	IMPLEMENT_I2D_BIO(EC_KEY, i2d_ECPrivateKey_bio, i2d_ECPrivateKey)

	IMPLEMENT_D2I_BIO(EC_KEY, d2i_EC_PUBKEY_bio, d2i_EC_PUBKEY)
	IMPLEMENT_I2D_BIO(EC_KEY, i2d_EC_PUBKEY_bio, i2d_EC_PUBKEY)

	int X509_pubkey_digest(const X509 data, const EVP_MD type, unsigned char *md,
	unsigned int *len) {
	ASN1_BIT_STRING *key;
	key = X509_get0_pubkey_bitstr(data);
	if (!key) {
	return 0;
	}
	return EVP_Digest(key->data, key->length, md, len, type, NULL);
	}

	int X509_digest(const X509 x509, const EVP_MD md, uint8_t *out,
	unsigned *out_len) {
	uint8_t *der = NULL;
	// TODO(https://crbug.com/boringssl/407): This function is not const-correct.
	int der_len = i2d_X509((X509 *)x509, &der);
	if (der_len < 0) {
	return 0;
	}

	int ret = EVP_Digest(der, der_len, out, out_len, md, NULL);
	OPENSSL_free(der);
	return ret;
	}

	int X509_CRL_digest(const X509_CRL data, const EVP_MD type, unsigned char *md,
	unsigned int *len) {
	return (
	ASN1_item_digest(ASN1_ITEM_rptr(X509_CRL), type, (char *)data, md, len));
	}

	int X509_REQ_digest(const X509_REQ data, const EVP_MD type, unsigned char *md,
	unsigned int *len) {
	return (
	ASN1_item_digest(ASN1_ITEM_rptr(X509_REQ), type, (char *)data, md, len));
	}

	int X509_NAME_digest(const X509_NAME data, const EVP_MD type,
	unsigned char md, unsigned int len) {
	return (
	ASN1_item_digest(ASN1_ITEM_rptr(X509_NAME), type, (char *)data, md, len));
	}

	IMPLEMENT_D2I_FP(X509_SIG, d2i_PKCS8_fp, d2i_PKCS8_bio)
	IMPLEMENT_I2D_FP(X509_SIG, i2d_PKCS8_fp, i2d_PKCS8_bio)

	IMPLEMENT_D2I_BIO(X509_SIG, d2i_PKCS8_bio, d2i_X509_SIG)
	IMPLEMENT_I2D_BIO(X509_SIG, i2d_PKCS8_bio, i2d_X509_SIG)

	IMPLEMENT_D2I_FP(PKCS8_PRIV_KEY_INFO, d2i_PKCS8_PRIV_KEY_INFO_fp,
	d2i_PKCS8_PRIV_KEY_INFO_bio)
	IMPLEMENT_I2D_FP(PKCS8_PRIV_KEY_INFO, i2d_PKCS8_PRIV_KEY_INFO_fp,
	i2d_PKCS8_PRIV_KEY_INFO_bio)

	int i2d_PKCS8PrivateKeyInfo_fp(FILE fp, EVP_PKEY key) {
	PKCS8_PRIV_KEY_INFO *p8inf;
	int ret;
	p8inf = EVP_PKEY2PKCS8(key);
	if (!p8inf) {
	return 0;
	}
	ret = i2d_PKCS8_PRIV_KEY_INFO_fp(fp, p8inf);
	PKCS8_PRIV_KEY_INFO_free(p8inf);
	return ret;
	}

	IMPLEMENT_D2I_FP(EVP_PKEY, d2i_PrivateKey_fp, d2i_PrivateKey_bio)
	IMPLEMENT_I2D_FP(EVP_PKEY, i2d_PrivateKey_fp, i2d_PrivateKey_bio)

	IMPLEMENT_D2I_FP(EVP_PKEY, d2i_PUBKEY_fp, d2i_PUBKEY_bio)
	IMPLEMENT_I2D_FP(EVP_PKEY, i2d_PUBKEY_fp, i2d_PUBKEY_bio)

	IMPLEMENT_D2I_BIO(PKCS8_PRIV_KEY_INFO, d2i_PKCS8_PRIV_KEY_INFO_bio,
	d2i_PKCS8_PRIV_KEY_INFO)
	IMPLEMENT_I2D_BIO(PKCS8_PRIV_KEY_INFO, i2d_PKCS8_PRIV_KEY_INFO_bio,
	i2d_PKCS8_PRIV_KEY_INFO)

	int i2d_PKCS8PrivateKeyInfo_bio(BIO bp, EVP_PKEY key) {
	PKCS8_PRIV_KEY_INFO *p8inf;
	int ret;
	p8inf = EVP_PKEY2PKCS8(key);
	if (!p8inf) {
	return 0;
	}
	ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf);
	PKCS8_PRIV_KEY_INFO_free(p8inf);
	return ret;
	}

	IMPLEMENT_D2I_BIO(EVP_PKEY, d2i_PrivateKey_bio, d2i_AutoPrivateKey)
	IMPLEMENT_I2D_BIO(EVP_PKEY, i2d_PrivateKey_bio, i2d_PrivateKey)

	IMPLEMENT_D2I_BIO(EVP_PKEY, d2i_PUBKEY_bio, d2i_PUBKEY)
	IMPLEMENT_I2D_BIO(EVP_PKEY, i2d_PUBKEY_bio, i2d_PUBKEY)

	IMPLEMENT_D2I_BIO(DH, d2i_DHparams_bio, d2i_DHparams)
	IMPLEMENT_I2D_BIO(const DH, i2d_DHparams_bio, i2d_DHparams)