text: /* $OpenBSD: pem.h,v 1.17 2016/09/04 16:22:54 jsing Exp $ */
  /* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
   * All rights reserved.
   *
   * This package is an SSL implementation written
   * by Eric Young (eay@cryptsoft.com).
   * The implementation was written so as to conform with Netscapes SSL.
   *
   * 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.]
   */
  
  #ifndef HEADER_PEM_H
  #define HEADER_PEM_H
  
  #include <openssl/opensslconf.h>
  
  #ifndef OPENSSL_NO_BIO
  #include <openssl/bio.h>
  #endif
  #ifndef OPENSSL_NO_STACK
  #include <openssl/stack.h>
  #endif
  #include <openssl/evp.h>
  #include <openssl/x509.h>
  #include <openssl/pem2.h>
  
  #ifdef  __cplusplus
  extern "C" {
  #endif
  
  #define PEM_BUFSIZE		1024
  
  #define PEM_OBJ_UNDEF		0
  #define PEM_OBJ_X509		1
  #define PEM_OBJ_X509_REQ	2
  #define PEM_OBJ_CRL		3
  #define PEM_OBJ_SSL_SESSION	4
  #define PEM_OBJ_PRIV_KEY	10
  #define PEM_OBJ_PRIV_RSA	11
  #define PEM_OBJ_PRIV_DSA	12
  #define PEM_OBJ_PRIV_DH		13
  #define PEM_OBJ_PUB_RSA		14
  #define PEM_OBJ_PUB_DSA		15
  #define PEM_OBJ_PUB_DH		16
  #define PEM_OBJ_DHPARAMS	17
  #define PEM_OBJ_DSAPARAMS	18
  #define PEM_OBJ_PRIV_RSA_PUBLIC	19
  #define PEM_OBJ_PRIV_ECDSA	20
  #define PEM_OBJ_PUB_ECDSA	21
  #define PEM_OBJ_ECPARAMETERS	22
  
  #define PEM_ERROR		30
  #define PEM_DEK_DES_CBC         40
  #define PEM_DEK_IDEA_CBC        45
  #define PEM_DEK_DES_EDE         50
  #define PEM_DEK_DES_ECB         60
  #define PEM_DEK_RSA             70
  #define PEM_DEK_RSA_MD2         80
  #define PEM_DEK_RSA_MD5         90
  
  #define PEM_MD_MD2		NID_md2
  #define PEM_MD_MD5		NID_md5
  #define PEM_MD_SHA		NID_sha
  #define PEM_MD_MD2_RSA		NID_md2WithRSAEncryption
  #define PEM_MD_MD5_RSA		NID_md5WithRSAEncryption
  #define PEM_MD_SHA_RSA		NID_sha1WithRSAEncryption
  
  #define PEM_STRING_X509_OLD	"X509 CERTIFICATE"
  #define PEM_STRING_X509		"CERTIFICATE"
  #define PEM_STRING_X509_PAIR	"CERTIFICATE PAIR"
  #define PEM_STRING_X509_TRUSTED	"TRUSTED CERTIFICATE"
  #define PEM_STRING_X509_REQ_OLD	"NEW CERTIFICATE REQUEST"
  #define PEM_STRING_X509_REQ	"CERTIFICATE REQUEST"
  #define PEM_STRING_X509_CRL	"X509 CRL"
  #define PEM_STRING_EVP_PKEY	"ANY PRIVATE KEY"
  #define PEM_STRING_PUBLIC	"PUBLIC KEY"
  #define PEM_STRING_RSA		"RSA PRIVATE KEY"
  #define PEM_STRING_RSA_PUBLIC	"RSA PUBLIC KEY"
  #define PEM_STRING_DSA		"DSA PRIVATE KEY"
  #define PEM_STRING_DSA_PUBLIC	"DSA PUBLIC KEY"
  #define PEM_STRING_PKCS7	"PKCS7"
  #define PEM_STRING_PKCS7_SIGNED	"PKCS #7 SIGNED DATA"
  #define PEM_STRING_PKCS8	"ENCRYPTED PRIVATE KEY"
  #define PEM_STRING_PKCS8INF	"PRIVATE KEY"
  #define PEM_STRING_DHPARAMS	"DH PARAMETERS"
  #define PEM_STRING_SSL_SESSION	"SSL SESSION PARAMETERS"
  #define PEM_STRING_DSAPARAMS	"DSA PARAMETERS"
  #define PEM_STRING_ECDSA_PUBLIC "ECDSA PUBLIC KEY"
  #define PEM_STRING_ECPARAMETERS "EC PARAMETERS"
  #define PEM_STRING_ECPRIVATEKEY	"EC PRIVATE KEY"
  #define PEM_STRING_PARAMETERS	"PARAMETERS"
  #define PEM_STRING_CMS		"CMS"
  
    /* Note that this structure is initialised by PEM_SealInit and cleaned up
       by PEM_SealFinal (at least for now) */
  typedef struct PEM_Encode_Seal_st {
  	EVP_ENCODE_CTX encode;
  	EVP_MD_CTX md;
  	EVP_CIPHER_CTX cipher;
  } PEM_ENCODE_SEAL_CTX;
  
  /* enc_type is one off */
  #define PEM_TYPE_ENCRYPTED      10
  #define PEM_TYPE_MIC_ONLY       20
  #define PEM_TYPE_MIC_CLEAR      30
  #define PEM_TYPE_CLEAR		40
  
  typedef struct pem_recip_st {
  	char *name;
  	X509_NAME *dn;
  
  	int cipher;
  	int key_enc;
  	/*	char iv[8]; unused and wrong size */
  } PEM_USER;
  
  typedef struct pem_ctx_st {
  	int type;		/* what type of object */
  
  	struct	{
  		int version;
  		int mode;
  	} proc_type;
  
  	char *domain;
  
  	struct	{
  		int cipher;
  	/* unused, and wrong size
  	   unsigned char iv[8]; */
  	} DEK_info;
  
  	PEM_USER *originator;
  
  	int num_recipient;
  	PEM_USER **recipient;
  
  	/* XXX(ben): don#t think this is used!
  		STACK *x509_chain;	/ * certificate chain */
  	EVP_MD *md;		/* signature type */
  
  	int md_enc;		/* is the md encrypted or not? */
  	int md_len;		/* length of md_data */
  	char *md_data;		/* message digest, could be pkey encrypted */
  
  	EVP_CIPHER *dec;	/* date encryption cipher */
  	int key_len;		/* key length */
  	unsigned char *key;	/* key */
  	/* unused, and wrong size
  	   unsigned char iv[8]; */
  
  	int  data_enc;		/* is the data encrypted */
  	int data_len;
  	unsigned char *data;
  } PEM_CTX;
  
  #ifndef LIBRESSL_INTERNAL
  /* These macros make the PEM_read/PEM_write functions easier to maintain and
   * write. Now they are all implemented with either:
   * IMPLEMENT_PEM_rw(...) or IMPLEMENT_PEM_rw_cb(...)
   */
  
  #define IMPLEMENT_PEM_read_fp(name, type, str, asn1) \
  type *PEM_read_##name(FILE *fp, type **x, pem_password_cb *cb, void *u)\
  { \
  return PEM_ASN1_read((d2i_of_void *)d2i_##asn1, str,fp,(void **)x,cb,u); \
  }
  
  #define IMPLEMENT_PEM_write_fp(name, type, str, asn1) \
  int PEM_write_##name(FILE *fp, type *x) \
  { \
  return PEM_ASN1_write((i2d_of_void *)i2d_##asn1,str,fp,x,NULL,NULL,0,NULL,NULL); \
  }
  
  #define IMPLEMENT_PEM_write_fp_const(name, type, str, asn1) \
  int PEM_write_##name(FILE *fp, const type *x) \
  { \
  return PEM_ASN1_write((i2d_of_void *)i2d_##asn1,str,fp,(void *)x,NULL,NULL,0,NULL,NULL); \
  }
  
  #define IMPLEMENT_PEM_write_cb_fp(name, type, str, asn1) \
  int PEM_write_##name(FILE *fp, type *x, const EVP_CIPHER *enc, \
  	     unsigned char *kstr, int klen, pem_password_cb *cb, \
  		  void *u) \
  	{ \
  	return PEM_ASN1_write((i2d_of_void *)i2d_##asn1,str,fp,x,enc,kstr,klen,cb,u); \
  	}
  
  #define IMPLEMENT_PEM_write_cb_fp_const(name, type, str, asn1) \
  int PEM_write_##name(FILE *fp, type *x, const EVP_CIPHER *enc, \
  	     unsigned char *kstr, int klen, pem_password_cb *cb, \
  		  void *u) \
  	{ \
  	return PEM_ASN1_write((i2d_of_void *)i2d_##asn1,str,fp,x,enc,kstr,klen,cb,u); \
  	}
  
  
  #define IMPLEMENT_PEM_read_bio(name, type, str, asn1) \
  type *PEM_read_bio_##name(BIO *bp, type **x, pem_password_cb *cb, void *u)\
  { \
  return PEM_ASN1_read_bio((d2i_of_void *)d2i_##asn1, str,bp,(void **)x,cb,u); \
  }
  
  #define IMPLEMENT_PEM_write_bio(name, type, str, asn1) \
  int PEM_write_bio_##name(BIO *bp, type *x) \
  { \
  return PEM_ASN1_write_bio((i2d_of_void *)i2d_##asn1,str,bp,x,NULL,NULL,0,NULL,NULL); \
  }
  
  #define IMPLEMENT_PEM_write_bio_const(name, type, str, asn1) \
  int PEM_write_bio_##name(BIO *bp, const type *x) \
  { \
  return PEM_ASN1_write_bio((i2d_of_void *)i2d_##asn1,str,bp,(void *)x,NULL,NULL,0,NULL,NULL); \
  }
  
  #define IMPLEMENT_PEM_write_cb_bio(name, type, str, asn1) \
  int PEM_write_bio_##name(BIO *bp, type *x, const EVP_CIPHER *enc, \
  	     unsigned char *kstr, int klen, pem_password_cb *cb, void *u) \
  	{ \
  	return PEM_ASN1_write_bio((i2d_of_void *)i2d_##asn1,str,bp,x,enc,kstr,klen,cb,u); \
  	}
  
  #define IMPLEMENT_PEM_write_cb_bio_const(name, type, str, asn1) \
  int PEM_write_bio_##name(BIO *bp, type *x, const EVP_CIPHER *enc, \
  	     unsigned char *kstr, int klen, pem_password_cb *cb, void *u) \
  	{ \
  	return PEM_ASN1_write_bio((i2d_of_void *)i2d_##asn1,str,bp,(void *)x,enc,kstr,klen,cb,u); \
  	}
  
  #define IMPLEMENT_PEM_write(name, type, str, asn1) \
  	IMPLEMENT_PEM_write_bio(name, type, str, asn1) \
  	IMPLEMENT_PEM_write_fp(name, type, str, asn1)
  
  #define IMPLEMENT_PEM_write_const(name, type, str, asn1) \
  	IMPLEMENT_PEM_write_bio_const(name, type, str, asn1) \
  	IMPLEMENT_PEM_write_fp_const(name, type, str, asn1)
  
  #define IMPLEMENT_PEM_write_cb(name, type, str, asn1) \
  	IMPLEMENT_PEM_write_cb_bio(name, type, str, asn1) \
  	IMPLEMENT_PEM_write_cb_fp(name, type, str, asn1)
  
  #define IMPLEMENT_PEM_write_cb_const(name, type, str, asn1) \
  	IMPLEMENT_PEM_write_cb_bio_const(name, type, str, asn1) \
  	IMPLEMENT_PEM_write_cb_fp_const(name, type, str, asn1)
  
  #define IMPLEMENT_PEM_read(name, type, str, asn1) \
  	IMPLEMENT_PEM_read_bio(name, type, str, asn1) \
  	IMPLEMENT_PEM_read_fp(name, type, str, asn1)
  
  #define IMPLEMENT_PEM_rw(name, type, str, asn1) \
  	IMPLEMENT_PEM_read(name, type, str, asn1) \
  	IMPLEMENT_PEM_write(name, type, str, asn1)
  
  #define IMPLEMENT_PEM_rw_const(name, type, str, asn1) \
  	IMPLEMENT_PEM_read(name, type, str, asn1) \
  	IMPLEMENT_PEM_write_const(name, type, str, asn1)
  
  #define IMPLEMENT_PEM_rw_cb(name, type, str, asn1) \
  	IMPLEMENT_PEM_read(name, type, str, asn1) \
  	IMPLEMENT_PEM_write_cb(name, type, str, asn1)
  
  #endif
  
  /* These are the same except they are for the declarations */
  
  
  #define DECLARE_PEM_read_fp(name, type) \
  	type *PEM_read_##name(FILE *fp, type **x, pem_password_cb *cb, void *u);
  
  #define DECLARE_PEM_write_fp(name, type) \
  	int PEM_write_##name(FILE *fp, type *x);
  
  #define DECLARE_PEM_write_fp_const(name, type) \
  	int PEM_write_##name(FILE *fp, const type *x);
  
  #define DECLARE_PEM_write_cb_fp(name, type) \
  	int PEM_write_##name(FILE *fp, type *x, const EVP_CIPHER *enc, \
  	     unsigned char *kstr, int klen, pem_password_cb *cb, void *u);
  
  
  #ifndef OPENSSL_NO_BIO
  #define DECLARE_PEM_read_bio(name, type) \
  	type *PEM_read_bio_##name(BIO *bp, type **x, pem_password_cb *cb, void *u);
  
  #define DECLARE_PEM_write_bio(name, type) \
  	int PEM_write_bio_##name(BIO *bp, type *x);
  
  #define DECLARE_PEM_write_bio_const(name, type) \
  	int PEM_write_bio_##name(BIO *bp, const type *x);
  
  #define DECLARE_PEM_write_cb_bio(name, type) \
  	int PEM_write_bio_##name(BIO *bp, type *x, const EVP_CIPHER *enc, \
  	     unsigned char *kstr, int klen, pem_password_cb *cb, void *u);
  
  #else
  
  #define DECLARE_PEM_read_bio(name, type) /**/
  #define DECLARE_PEM_write_bio(name, type) /**/
  #define DECLARE_PEM_write_bio_const(name, type) /**/
  #define DECLARE_PEM_write_cb_bio(name, type) /**/
  
  #endif
  
  #define DECLARE_PEM_write(name, type) \
  	DECLARE_PEM_write_bio(name, type) \
  	DECLARE_PEM_write_fp(name, type)
  
  #define DECLARE_PEM_write_const(name, type) \
  	DECLARE_PEM_write_bio_const(name, type) \
  	DECLARE_PEM_write_fp_const(name, type)
  
  #define DECLARE_PEM_write_cb(name, type) \
  	DECLARE_PEM_write_cb_bio(name, type) \
  	DECLARE_PEM_write_cb_fp(name, type)
  
  #define DECLARE_PEM_read(name, type) \
  	DECLARE_PEM_read_bio(name, type) \
  	DECLARE_PEM_read_fp(name, type)
  
  #define DECLARE_PEM_rw(name, type) \
  	DECLARE_PEM_read(name, type) \
  	DECLARE_PEM_write(name, type)
  
  #define DECLARE_PEM_rw_const(name, type) \
  	DECLARE_PEM_read(name, type) \
  	DECLARE_PEM_write_const(name, type)
  
  #define DECLARE_PEM_rw_cb(name, type) \
  	DECLARE_PEM_read(name, type) \
  	DECLARE_PEM_write_cb(name, type)
  
  typedef int pem_password_cb(char *buf, int size, int rwflag, void *userdata);
  
  int	PEM_get_EVP_CIPHER_INFO(char *header, EVP_CIPHER_INFO *cipher);
  int	PEM_do_header (EVP_CIPHER_INFO *cipher, unsigned char *data, long *len,
  	    pem_password_cb *callback, void *u);
  
  #ifndef OPENSSL_NO_BIO
  int	PEM_read_bio(BIO *bp, char **name, char **header,
  	    unsigned char **data, long *len);
  int	PEM_write_bio(BIO *bp, const char *name, char *hdr, unsigned char *data,
  	    long len);
  int	PEM_bytes_read_bio(unsigned char **pdata, long *plen, char **pnm,
  	    const char *name, BIO *bp, pem_password_cb *cb, void *u);
  void *	PEM_ASN1_read_bio(d2i_of_void *d2i, const char *name, BIO *bp,
  	    void **x, pem_password_cb *cb, void *u);
  int	PEM_ASN1_write_bio(i2d_of_void *i2d, const char *name, BIO *bp, void *x,
  	    const EVP_CIPHER *enc, unsigned char *kstr, int klen,
  	    pem_password_cb *cb, void *u);
  
  STACK_OF(X509_INFO) *	PEM_X509_INFO_read_bio(BIO *bp,
  	    STACK_OF(X509_INFO) *sk, pem_password_cb *cb, void *u);
  int	PEM_X509_INFO_write_bio(BIO *bp, X509_INFO *xi, EVP_CIPHER *enc,
  	    unsigned char *kstr, int klen, pem_password_cb *cd, void *u);
  #endif
  
  int	PEM_read(FILE *fp, char **name, char **header,
  	    unsigned char **data, long *len);
  int	PEM_write(FILE *fp, char *name, char *hdr, unsigned char *data,
  	    long len);
  void *  PEM_ASN1_read(d2i_of_void *d2i, const char *name, FILE *fp, void **x,
  	    pem_password_cb *cb, void *u);
  int	PEM_ASN1_write(i2d_of_void *i2d, const char *name, FILE *fp,
  	    void *x, const EVP_CIPHER *enc, unsigned char *kstr,
  	    int klen, pem_password_cb *callback, void *u);
  STACK_OF(X509_INFO) *	PEM_X509_INFO_read(FILE *fp, STACK_OF(X509_INFO) *sk,
  	    pem_password_cb *cb, void *u);
  
  int	PEM_SealInit(PEM_ENCODE_SEAL_CTX *ctx, EVP_CIPHER *type,
  	    EVP_MD *md_type, unsigned char **ek, int *ekl,
  	    unsigned char *iv, EVP_PKEY **pubk, int npubk);
  void	PEM_SealUpdate(PEM_ENCODE_SEAL_CTX *ctx, unsigned char *out, int *outl,
  	    unsigned char *in, int inl);
  int	PEM_SealFinal(PEM_ENCODE_SEAL_CTX *ctx, unsigned char *sig, int *sigl,
  	    unsigned char *out, int *outl, EVP_PKEY *priv);
  
  void    PEM_SignInit(EVP_MD_CTX *ctx, EVP_MD *type);
  void    PEM_SignUpdate(EVP_MD_CTX *ctx, unsigned char *d, unsigned int cnt);
  int	PEM_SignFinal(EVP_MD_CTX *ctx, unsigned char *sigret,
  	    unsigned int *siglen, EVP_PKEY *pkey);
  
  int	PEM_def_callback(char *buf, int num, int w, void *key);
  void	PEM_proc_type(char *buf, int type);
  void	PEM_dek_info(char *buf, const char *type, int len, char *str);
  
  
  DECLARE_PEM_rw(X509, X509)
  
  DECLARE_PEM_rw(X509_AUX, X509)
  
  DECLARE_PEM_rw(X509_CERT_PAIR, X509_CERT_PAIR)
  
  DECLARE_PEM_rw(X509_REQ, X509_REQ)
  DECLARE_PEM_write(X509_REQ_NEW, X509_REQ)
  
  DECLARE_PEM_rw(X509_CRL, X509_CRL)
  
  DECLARE_PEM_rw(PKCS7, PKCS7)
  
  DECLARE_PEM_rw(NETSCAPE_CERT_SEQUENCE, NETSCAPE_CERT_SEQUENCE)
  
  DECLARE_PEM_rw(PKCS8, X509_SIG)
  
  DECLARE_PEM_rw(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO)
  
  #ifndef OPENSSL_NO_RSA
  
  DECLARE_PEM_rw_cb(RSAPrivateKey, RSA)
  
  DECLARE_PEM_rw_const(RSAPublicKey, RSA)
  DECLARE_PEM_rw(RSA_PUBKEY, RSA)
  
  #endif
  
  #ifndef OPENSSL_NO_DSA
  
  DECLARE_PEM_rw_cb(DSAPrivateKey, DSA)
  
  DECLARE_PEM_rw(DSA_PUBKEY, DSA)
  
  DECLARE_PEM_rw_const(DSAparams, DSA)
  
  #endif
  
  #ifndef OPENSSL_NO_EC
  DECLARE_PEM_rw_const(ECPKParameters, EC_GROUP)
  DECLARE_PEM_rw_cb(ECPrivateKey, EC_KEY)
  DECLARE_PEM_rw(EC_PUBKEY, EC_KEY)
  #endif
  
  #ifndef OPENSSL_NO_DH
  
  DECLARE_PEM_rw_const(DHparams, DH)
  
  #endif
  
  DECLARE_PEM_rw_cb(PrivateKey, EVP_PKEY)
  
  DECLARE_PEM_rw(PUBKEY, EVP_PKEY)
  
  int PEM_write_bio_PKCS8PrivateKey_nid(BIO *bp, EVP_PKEY *x, int nid,
      char *kstr, int klen,
      pem_password_cb *cb, void *u);
  int PEM_write_bio_PKCS8PrivateKey(BIO *, EVP_PKEY *, const EVP_CIPHER *,
      char *, int, pem_password_cb *, void *);
  int i2d_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
      char *kstr, int klen,
      pem_password_cb *cb, void *u);
  int i2d_PKCS8PrivateKey_nid_bio(BIO *bp, EVP_PKEY *x, int nid,
      char *kstr, int klen,
      pem_password_cb *cb, void *u);
  EVP_PKEY *d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb,
      void *u);
  
  int i2d_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
      char *kstr, int klen,
      pem_password_cb *cb, void *u);
  int i2d_PKCS8PrivateKey_nid_fp(FILE *fp, EVP_PKEY *x, int nid,
      char *kstr, int klen,
      pem_password_cb *cb, void *u);
  int PEM_write_PKCS8PrivateKey_nid(FILE *fp, EVP_PKEY *x, int nid,
      char *kstr, int klen,
      pem_password_cb *cb, void *u);
  
  EVP_PKEY *d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb,
      void *u);
  
  int PEM_write_PKCS8PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
      char *kstr, int klen, pem_password_cb *cd, void *u);
  
  EVP_PKEY *PEM_read_bio_Parameters(BIO *bp, EVP_PKEY **x);
  int PEM_write_bio_Parameters(BIO *bp, EVP_PKEY *x);
  
  
  EVP_PKEY *b2i_PrivateKey(const unsigned char **in, long length);
  EVP_PKEY *b2i_PublicKey(const unsigned char **in, long length);
  EVP_PKEY *b2i_PrivateKey_bio(BIO *in);
  EVP_PKEY *b2i_PublicKey_bio(BIO *in);
  int i2b_PrivateKey_bio(BIO *out, EVP_PKEY *pk);
  int i2b_PublicKey_bio(BIO *out, EVP_PKEY *pk);
  #ifndef OPENSSL_NO_RC4
  EVP_PKEY *b2i_PVK_bio(BIO *in, pem_password_cb *cb, void *u);
  int i2b_PVK_bio(BIO *out, EVP_PKEY *pk, int enclevel, pem_password_cb *cb,
      void *u);
  #endif
  
  
  /* BEGIN ERROR CODES */
  /* The following lines are auto generated by the script mkerr.pl. Any changes
   * made after this point may be overwritten when the script is next run.
   */
  void ERR_load_PEM_strings(void);
  
  /* Error codes for the PEM functions. */
  
  /* Function codes. */
  #define PEM_F_B2I_DSS					 127
  #define PEM_F_B2I_PVK_BIO				 128
  #define PEM_F_B2I_RSA					 129
  #define PEM_F_CHECK_BITLEN_DSA				 130
  #define PEM_F_CHECK_BITLEN_RSA				 131
  #define PEM_F_D2I_PKCS8PRIVATEKEY_BIO			 120
  #define PEM_F_D2I_PKCS8PRIVATEKEY_FP			 121
  #define PEM_F_DO_B2I					 132
  #define PEM_F_DO_B2I_BIO				 133
  #define PEM_F_DO_BLOB_HEADER				 134
  #define PEM_F_DO_PK8PKEY				 126
  #define PEM_F_DO_PK8PKEY_FP				 125
  #define PEM_F_DO_PVK_BODY				 135
  #define PEM_F_DO_PVK_HEADER				 136
  #define PEM_F_I2B_PVK					 137
  #define PEM_F_I2B_PVK_BIO				 138
  #define PEM_F_LOAD_IV					 101
  #define PEM_F_PEM_ASN1_READ				 102
  #define PEM_F_PEM_ASN1_READ_BIO				 103
  #define PEM_F_PEM_ASN1_WRITE				 104
  #define PEM_F_PEM_ASN1_WRITE_BIO			 105
  #define PEM_F_PEM_DEF_CALLBACK				 100
  #define PEM_F_PEM_DO_HEADER				 106
  #define PEM_F_PEM_F_PEM_WRITE_PKCS8PRIVATEKEY		 118
  #define PEM_F_PEM_GET_EVP_CIPHER_INFO			 107
  #define PEM_F_PEM_PK8PKEY				 119
  #define PEM_F_PEM_READ					 108
  #define PEM_F_PEM_READ_BIO				 109
  #define PEM_F_PEM_READ_BIO_PARAMETERS			 140
  #define PEM_F_PEM_READ_BIO_PRIVATEKEY			 123
  #define PEM_F_PEM_READ_PRIVATEKEY			 124
  #define PEM_F_PEM_SEALFINAL				 110
  #define PEM_F_PEM_SEALINIT				 111
  #define PEM_F_PEM_SIGNFINAL				 112
  #define PEM_F_PEM_WRITE					 113
  #define PEM_F_PEM_WRITE_BIO				 114
  #define PEM_F_PEM_WRITE_PRIVATEKEY			 139
  #define PEM_F_PEM_X509_INFO_READ			 115
  #define PEM_F_PEM_X509_INFO_READ_BIO			 116
  #define PEM_F_PEM_X509_INFO_WRITE_BIO			 117
  
  /* Reason codes. */
  #define PEM_R_BAD_BASE64_DECODE				 100
  #define PEM_R_BAD_DECRYPT				 101
  #define PEM_R_BAD_END_LINE				 102
  #define PEM_R_BAD_IV_CHARS				 103
  #define PEM_R_BAD_MAGIC_NUMBER				 116
  #define PEM_R_BAD_PASSWORD_READ				 104
  #define PEM_R_BAD_VERSION_NUMBER			 117
  #define PEM_R_BIO_WRITE_FAILURE				 118
  #define PEM_R_CIPHER_IS_NULL				 127
  #define PEM_R_ERROR_CONVERTING_PRIVATE_KEY		 115
  #define PEM_R_EXPECTING_PRIVATE_KEY_BLOB		 119
  #define PEM_R_EXPECTING_PUBLIC_KEY_BLOB			 120
  #define PEM_R_INCONSISTENT_HEADER			 121
  #define PEM_R_KEYBLOB_HEADER_PARSE_ERROR		 122
  #define PEM_R_KEYBLOB_TOO_SHORT				 123
  #define PEM_R_NOT_DEK_INFO				 105
  #define PEM_R_NOT_ENCRYPTED				 106
  #define PEM_R_NOT_PROC_TYPE				 107
  #define PEM_R_NO_START_LINE				 108
  #define PEM_R_PROBLEMS_GETTING_PASSWORD			 109
  #define PEM_R_PUBLIC_KEY_NO_RSA				 110
  #define PEM_R_PVK_DATA_TOO_SHORT			 124
  #define PEM_R_PVK_TOO_SHORT				 125
  #define PEM_R_READ_KEY					 111
  #define PEM_R_SHORT_HEADER				 112
  #define PEM_R_UNSUPPORTED_CIPHER			 113
  #define PEM_R_UNSUPPORTED_ENCRYPTION			 114
  #define PEM_R_UNSUPPORTED_KEY_COMPONENTS		 126
  
  #ifdef  __cplusplus
  }
  #endif
  #endif
  