LCOM1920-T02G10

/* crypto/evp/evp.h */

/* Copyright (C) 1995-1998 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_ENVELOPE_H

# define HEADER_ENVELOPE_H

# ifdef OPENSSL_ALGORITHM_DEFINES

#  include <openssl/opensslconf.h>

# else

#  define OPENSSL_ALGORITHM_DEFINES

#  include <openssl/opensslconf.h>

#  undef OPENSSL_ALGORITHM_DEFINES

# endif

# include <openssl/ossl_typ.h>

# include <openssl/symhacks.h>

# ifndef OPENSSL_NO_BIO

#  include <openssl/bio.h>

# endif

/*-

#define EVP_RC2_KEY_SIZE                16

#define EVP_RC4_KEY_SIZE                16

#define EVP_BLOWFISH_KEY_SIZE           16

#define EVP_CAST5_KEY_SIZE              16

#define EVP_RC5_32_12_16_KEY_SIZE       16

*/

# define EVP_MAX_MD_SIZE                 64/* longest known is SHA512 */

# define EVP_MAX_KEY_LENGTH              64

# define EVP_MAX_IV_LENGTH               16

# define EVP_MAX_BLOCK_LENGTH            32

# define PKCS5_SALT_LEN                  8

/* Default PKCS#5 iteration count */

# define PKCS5_DEFAULT_ITER              2048

# include <openssl/objects.h>

# define EVP_PK_RSA      0x0001

# define EVP_PK_DSA      0x0002

# define EVP_PK_DH       0x0004

# define EVP_PK_EC       0x0008

# define EVP_PKT_SIGN    0x0010

# define EVP_PKT_ENC     0x0020

# define EVP_PKT_EXCH    0x0040

# define EVP_PKS_RSA     0x0100

# define EVP_PKS_DSA     0x0200

# define EVP_PKS_EC      0x0400

# define EVP_PKEY_NONE   NID_undef

# define EVP_PKEY_RSA    NID_rsaEncryption

# define EVP_PKEY_RSA2   NID_rsa

# define EVP_PKEY_DSA    NID_dsa

# define EVP_PKEY_DSA1   NID_dsa_2

# define EVP_PKEY_DSA2   NID_dsaWithSHA

# define EVP_PKEY_DSA3   NID_dsaWithSHA1

# define EVP_PKEY_DSA4   NID_dsaWithSHA1_2

# define EVP_PKEY_DH     NID_dhKeyAgreement

# define EVP_PKEY_EC     NID_X9_62_id_ecPublicKey

# define EVP_PKEY_HMAC   NID_hmac

# define EVP_PKEY_CMAC   NID_cmac

#ifdef  __cplusplus

extern "C" {

#endif

/*

 * Type needs to be a bit field Sub-type needs to be for variations on the

 * method, as in, can it do arbitrary encryption....

 */

struct evp_pkey_st {

    int type;

    int save_type;

    int references;

    const EVP_PKEY_ASN1_METHOD *ameth;

    ENGINE *engine;

    union {

        char *ptr;

# ifndef OPENSSL_NO_RSA

        struct rsa_st *rsa;     /* RSA */

# endif

# ifndef OPENSSL_NO_DSA

        struct dsa_st *dsa;     /* DSA */

# endif

# ifndef OPENSSL_NO_DH

        struct dh_st *dh;       /* DH */

# endif

# ifndef OPENSSL_NO_EC

        struct ec_key_st *ec;   /* ECC */

# endif

    } pkey;

    int save_parameters;

    STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */

} /* EVP_PKEY */ ;

# define EVP_PKEY_MO_SIGN        0x0001

# define EVP_PKEY_MO_VERIFY      0x0002

# define EVP_PKEY_MO_ENCRYPT     0x0004

# define EVP_PKEY_MO_DECRYPT     0x0008

# ifndef EVP_MD

struct env_md_st {

    int type;

    int pkey_type;

    int md_size;

    unsigned long flags;

    int (*init) (EVP_MD_CTX *ctx);

    int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);

    int (*final) (EVP_MD_CTX *ctx, unsigned char *md);

    int (*copy) (EVP_MD_CTX *to, const EVP_MD_CTX *from);

    int (*cleanup) (EVP_MD_CTX *ctx);

    /* FIXME: prototype these some day */

    int (*sign) (int type, const unsigned char *m, unsigned int m_length,

                 unsigned char *sigret, unsigned int *siglen, void *key);

    int (*verify) (int type, const unsigned char *m, unsigned int m_length,

                   const unsigned char *sigbuf, unsigned int siglen,

                   void *key);

    int required_pkey_type[5];  /* EVP_PKEY_xxx */

    int block_size;

    int ctx_size;               /* how big does the ctx->md_data need to be */

    /* control function */

    int (*md_ctrl) (EVP_MD_CTX *ctx, int cmd, int p1, void *p2);

} /* EVP_MD */ ;

typedef int evp_sign_method(int type, const unsigned char *m,

                            unsigned int m_length, unsigned char *sigret,

                            unsigned int *siglen, void *key);

typedef int evp_verify_method(int type, const unsigned char *m,

                              unsigned int m_length,

                              const unsigned char *sigbuf,

                              unsigned int siglen, void *key);

/* digest can only handle a single block */

#  define EVP_MD_FLAG_ONESHOT     0x0001

/*

 * digest is a "clone" digest used

 * which is a copy of an existing

 * one for a specific public key type.

 * EVP_dss1() etc

 */

#  define EVP_MD_FLAG_PKEY_DIGEST 0x0002

/* Digest uses EVP_PKEY_METHOD for signing instead of MD specific signing */

#  define EVP_MD_FLAG_PKEY_METHOD_SIGNATURE       0x0004

/* DigestAlgorithmIdentifier flags... */

#  define EVP_MD_FLAG_DIGALGID_MASK               0x0018

/* NULL or absent parameter accepted. Use NULL */

#  define EVP_MD_FLAG_DIGALGID_NULL               0x0000

/* NULL or absent parameter accepted. Use NULL for PKCS#1 otherwise absent */

#  define EVP_MD_FLAG_DIGALGID_ABSENT             0x0008

/* Custom handling via ctrl */

#  define EVP_MD_FLAG_DIGALGID_CUSTOM             0x0018

/* Note if suitable for use in FIPS mode */

#  define EVP_MD_FLAG_FIPS        0x0400

/* Digest ctrls */

#  define EVP_MD_CTRL_DIGALGID                    0x1

#  define EVP_MD_CTRL_MICALG                      0x2

/* Minimum Algorithm specific ctrl value */

#  define EVP_MD_CTRL_ALG_CTRL                    0x1000

#  define EVP_PKEY_NULL_method    NULL,NULL,{0,0,0,0}

#  ifndef OPENSSL_NO_DSA

#   define EVP_PKEY_DSA_method     (evp_sign_method *)DSA_sign, \

                                (evp_verify_method *)DSA_verify, \

                                {EVP_PKEY_DSA,EVP_PKEY_DSA2,EVP_PKEY_DSA3, \

                                        EVP_PKEY_DSA4,0}

#  else

#   define EVP_PKEY_DSA_method     EVP_PKEY_NULL_method

#  endif

#  ifndef OPENSSL_NO_ECDSA

#   define EVP_PKEY_ECDSA_method   (evp_sign_method *)ECDSA_sign, \

                                (evp_verify_method *)ECDSA_verify, \

                                 {EVP_PKEY_EC,0,0,0}

#  else

#   define EVP_PKEY_ECDSA_method   EVP_PKEY_NULL_method

#  endif

#  ifndef OPENSSL_NO_RSA

#   define EVP_PKEY_RSA_method     (evp_sign_method *)RSA_sign, \

                                (evp_verify_method *)RSA_verify, \

                                {EVP_PKEY_RSA,EVP_PKEY_RSA2,0,0}

#   define EVP_PKEY_RSA_ASN1_OCTET_STRING_method \

                                (evp_sign_method *)RSA_sign_ASN1_OCTET_STRING, \

                                (evp_verify_method *)RSA_verify_ASN1_OCTET_STRING, \

                                {EVP_PKEY_RSA,EVP_PKEY_RSA2,0,0}

#  else

#   define EVP_PKEY_RSA_method     EVP_PKEY_NULL_method

#   define EVP_PKEY_RSA_ASN1_OCTET_STRING_method EVP_PKEY_NULL_method

#  endif

# endif                         /* !EVP_MD */

struct env_md_ctx_st {

    const EVP_MD *digest;

    ENGINE *engine;             /* functional reference if 'digest' is

                                 * ENGINE-provided */

    unsigned long flags;

    void *md_data;

    /* Public key context for sign/verify */

    EVP_PKEY_CTX *pctx;

    /* Update function: usually copied from EVP_MD */

    int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);

} /* EVP_MD_CTX */ ;

/* values for EVP_MD_CTX flags */

# define EVP_MD_CTX_FLAG_ONESHOT         0x0001/* digest update will be

                                                * called once only */

# define EVP_MD_CTX_FLAG_CLEANED         0x0002/* context has already been

                                                * cleaned */

# define EVP_MD_CTX_FLAG_REUSE           0x0004/* Don't free up ctx->md_data

                                                * in EVP_MD_CTX_cleanup */

/*

 * FIPS and pad options are ignored in 1.0.0, definitions are here so we

 * don't accidentally reuse the values for other purposes.

 */

# define EVP_MD_CTX_FLAG_NON_FIPS_ALLOW  0x0008/* Allow use of non FIPS

                                                * digest in FIPS mode */

/*

 * The following PAD options are also currently ignored in 1.0.0, digest

 * parameters are handled through EVP_DigestSign*() and EVP_DigestVerify*()

 * instead.

 */

# define EVP_MD_CTX_FLAG_PAD_MASK        0xF0/* RSA mode to use */

# define EVP_MD_CTX_FLAG_PAD_PKCS1       0x00/* PKCS#1 v1.5 mode */

# define EVP_MD_CTX_FLAG_PAD_X931        0x10/* X9.31 mode */

# define EVP_MD_CTX_FLAG_PAD_PSS         0x20/* PSS mode */

# define EVP_MD_CTX_FLAG_NO_INIT         0x0100/* Don't initialize md_data */

struct evp_cipher_st {

    int nid;

    int block_size;

    /* Default value for variable length ciphers */

    int key_len;

    int iv_len;

    /* Various flags */

    unsigned long flags;

    /* init key */

    int (*init) (EVP_CIPHER_CTX *ctx, const unsigned char *key,

                 const unsigned char *iv, int enc);

    /* encrypt/decrypt data */

    int (*do_cipher) (EVP_CIPHER_CTX *ctx, unsigned char *out,

                      const unsigned char *in, size_t inl);

    /* cleanup ctx */

    int (*cleanup) (EVP_CIPHER_CTX *);

    /* how big ctx->cipher_data needs to be */

    int ctx_size;

    /* Populate a ASN1_TYPE with parameters */

    int (*set_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);

    /* Get parameters from a ASN1_TYPE */

    int (*get_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);

    /* Miscellaneous operations */

    int (*ctrl) (EVP_CIPHER_CTX *, int type, int arg, void *ptr);

    /* Application data */

    void *app_data;

} /* EVP_CIPHER */ ;

/* Values for cipher flags */

/* Modes for ciphers */

# define         EVP_CIPH_STREAM_CIPHER          0x0

# define         EVP_CIPH_ECB_MODE               0x1

# define         EVP_CIPH_CBC_MODE               0x2

# define         EVP_CIPH_CFB_MODE               0x3

# define         EVP_CIPH_OFB_MODE               0x4

# define         EVP_CIPH_CTR_MODE               0x5

# define         EVP_CIPH_GCM_MODE               0x6

# define         EVP_CIPH_CCM_MODE               0x7

# define         EVP_CIPH_XTS_MODE               0x10001

# define         EVP_CIPH_MODE                   0xF0007

/* Set if variable length cipher */

# define         EVP_CIPH_VARIABLE_LENGTH        0x8

/* Set if the iv handling should be done by the cipher itself */

# define         EVP_CIPH_CUSTOM_IV              0x10

/* Set if the cipher's init() function should be called if key is NULL */

# define         EVP_CIPH_ALWAYS_CALL_INIT       0x20

/* Call ctrl() to init cipher parameters */

# define         EVP_CIPH_CTRL_INIT              0x40

/* Don't use standard key length function */

# define         EVP_CIPH_CUSTOM_KEY_LENGTH      0x80

/* Don't use standard block padding */

# define         EVP_CIPH_NO_PADDING             0x100

/* cipher handles random key generation */

# define         EVP_CIPH_RAND_KEY               0x200

/* cipher has its own additional copying logic */

# define         EVP_CIPH_CUSTOM_COPY            0x400

/* Allow use default ASN1 get/set iv */

# define         EVP_CIPH_FLAG_DEFAULT_ASN1      0x1000

/* Buffer length in bits not bytes: CFB1 mode only */

# define         EVP_CIPH_FLAG_LENGTH_BITS       0x2000

/* Note if suitable for use in FIPS mode */

# define         EVP_CIPH_FLAG_FIPS              0x4000

/* Allow non FIPS cipher in FIPS mode */

# define         EVP_CIPH_FLAG_NON_FIPS_ALLOW    0x8000

/*

 * Cipher handles any and all padding logic as well as finalisation.

 */

# define         EVP_CIPH_FLAG_CUSTOM_CIPHER     0x100000

# define         EVP_CIPH_FLAG_AEAD_CIPHER       0x200000

/* ctrl() values */

# define         EVP_CTRL_INIT                   0x0

# define         EVP_CTRL_SET_KEY_LENGTH         0x1

# define         EVP_CTRL_GET_RC2_KEY_BITS       0x2

# define         EVP_CTRL_SET_RC2_KEY_BITS       0x3

# define         EVP_CTRL_GET_RC5_ROUNDS         0x4

# define         EVP_CTRL_SET_RC5_ROUNDS         0x5

# define         EVP_CTRL_RAND_KEY               0x6

# define         EVP_CTRL_PBE_PRF_NID            0x7

# define         EVP_CTRL_COPY                   0x8

# define         EVP_CTRL_GCM_SET_IVLEN          0x9

# define         EVP_CTRL_GCM_GET_TAG            0x10

# define         EVP_CTRL_GCM_SET_TAG            0x11

# define         EVP_CTRL_GCM_SET_IV_FIXED       0x12

# define         EVP_CTRL_GCM_IV_GEN             0x13

# define         EVP_CTRL_CCM_SET_IVLEN          EVP_CTRL_GCM_SET_IVLEN

# define         EVP_CTRL_CCM_GET_TAG            EVP_CTRL_GCM_GET_TAG

# define         EVP_CTRL_CCM_SET_TAG            EVP_CTRL_GCM_SET_TAG

# define         EVP_CTRL_CCM_SET_L              0x14

# define         EVP_CTRL_CCM_SET_MSGLEN         0x15

/*

 * AEAD cipher deduces payload length and returns number of bytes required to

 * store MAC and eventual padding. Subsequent call to EVP_Cipher even

 * appends/verifies MAC.

 */

# define         EVP_CTRL_AEAD_TLS1_AAD          0x16

/* Used by composite AEAD ciphers, no-op in GCM, CCM... */

# define         EVP_CTRL_AEAD_SET_MAC_KEY       0x17

/* Set the GCM invocation field, decrypt only */

# define         EVP_CTRL_GCM_SET_IV_INV         0x18

/* RFC 5246 defines additional data to be 13 bytes in length */

# define         EVP_AEAD_TLS1_AAD_LEN           13

/* GCM TLS constants */

/* Length of fixed part of IV derived from PRF */

# define EVP_GCM_TLS_FIXED_IV_LEN                        4

/* Length of explicit part of IV part of TLS records */

# define EVP_GCM_TLS_EXPLICIT_IV_LEN                     8

/* Length of tag for TLS */

# define EVP_GCM_TLS_TAG_LEN                             16

typedef struct evp_cipher_info_st {

    const EVP_CIPHER *cipher;

    unsigned char iv[EVP_MAX_IV_LENGTH];

} EVP_CIPHER_INFO;

struct evp_cipher_ctx_st {

    const EVP_CIPHER *cipher;

    ENGINE *engine;             /* functional reference if 'cipher' is

                                 * ENGINE-provided */

    int encrypt;                /* encrypt or decrypt */

    int buf_len;                /* number we have left */

    unsigned char oiv[EVP_MAX_IV_LENGTH]; /* original iv */

    unsigned char iv[EVP_MAX_IV_LENGTH]; /* working iv */

    unsigned char buf[EVP_MAX_BLOCK_LENGTH]; /* saved partial block */

    int num;                    /* used by cfb/ofb/ctr mode */

    void *app_data;             /* application stuff */

    int key_len;                /* May change for variable length cipher */

    unsigned long flags;        /* Various flags */

    void *cipher_data;          /* per EVP data */

    int final_used;

    int block_mask;

    unsigned char final[EVP_MAX_BLOCK_LENGTH]; /* possible final block */

} /* EVP_CIPHER_CTX */ ;

typedef struct evp_Encode_Ctx_st {

    /* number saved in a partial encode/decode */

    int num;

    /*

     * The length is either the output line length (in input bytes) or the

     * shortest input line length that is ok.  Once decoding begins, the

     * length is adjusted up each time a longer line is decoded

     */

    int length;

    /* data to encode */

    unsigned char enc_data[80];

    /* number read on current line */

    int line_num;

    int expect_nl;

} EVP_ENCODE_CTX;

/* Password based encryption function */

typedef int (EVP_PBE_KEYGEN) (EVP_CIPHER_CTX *ctx, const char *pass,

                              int passlen, ASN1_TYPE *param,

                              const EVP_CIPHER *cipher, const EVP_MD *md,

                              int en_de);

# ifndef OPENSSL_NO_RSA

#  define EVP_PKEY_assign_RSA(pkey,rsa) EVP_PKEY_assign((pkey),EVP_PKEY_RSA,\

                                        (char *)(rsa))

# endif

# ifndef OPENSSL_NO_DSA

#  define EVP_PKEY_assign_DSA(pkey,dsa) EVP_PKEY_assign((pkey),EVP_PKEY_DSA,\

                                        (char *)(dsa))

# endif

# ifndef OPENSSL_NO_DH

#  define EVP_PKEY_assign_DH(pkey,dh) EVP_PKEY_assign((pkey),EVP_PKEY_DH,\

                                        (char *)(dh))

# endif

# ifndef OPENSSL_NO_EC

#  define EVP_PKEY_assign_EC_KEY(pkey,eckey) EVP_PKEY_assign((pkey),EVP_PKEY_EC,\

                                        (char *)(eckey))

# endif

/* Add some extra combinations */

# define EVP_get_digestbynid(a) EVP_get_digestbyname(OBJ_nid2sn(a))

# define EVP_get_digestbyobj(a) EVP_get_digestbynid(OBJ_obj2nid(a))

# define EVP_get_cipherbynid(a) EVP_get_cipherbyname(OBJ_nid2sn(a))

# define EVP_get_cipherbyobj(a) EVP_get_cipherbynid(OBJ_obj2nid(a))

int EVP_MD_type(const EVP_MD *md);

# define EVP_MD_nid(e)                   EVP_MD_type(e)

# define EVP_MD_name(e)                  OBJ_nid2sn(EVP_MD_nid(e))

int EVP_MD_pkey_type(const EVP_MD *md);

int EVP_MD_size(const EVP_MD *md);

int EVP_MD_block_size(const EVP_MD *md);

unsigned long EVP_MD_flags(const EVP_MD *md);

const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx);

# define EVP_MD_CTX_size(e)              EVP_MD_size(EVP_MD_CTX_md(e))

# define EVP_MD_CTX_block_size(e)        EVP_MD_block_size(EVP_MD_CTX_md(e))

# define EVP_MD_CTX_type(e)              EVP_MD_type(EVP_MD_CTX_md(e))

int EVP_CIPHER_nid(const EVP_CIPHER *cipher);

# define EVP_CIPHER_name(e)              OBJ_nid2sn(EVP_CIPHER_nid(e))

int EVP_CIPHER_block_size(const EVP_CIPHER *cipher);

int EVP_CIPHER_key_length(const EVP_CIPHER *cipher);

int EVP_CIPHER_iv_length(const EVP_CIPHER *cipher);

unsigned long EVP_CIPHER_flags(const EVP_CIPHER *cipher);

# define EVP_CIPHER_mode(e)              (EVP_CIPHER_flags(e) & EVP_CIPH_MODE)

const EVP_CIPHER *EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx);

int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx);

int EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx);

int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx);

int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx);

int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in);

void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx);

void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data);

# define EVP_CIPHER_CTX_type(c)         EVP_CIPHER_type(EVP_CIPHER_CTX_cipher(c))

unsigned long EVP_CIPHER_CTX_flags(const EVP_CIPHER_CTX *ctx);

# define EVP_CIPHER_CTX_mode(e)          (EVP_CIPHER_CTX_flags(e) & EVP_CIPH_MODE)

# define EVP_ENCODE_LENGTH(l)    (((l+2)/3*4)+(l/48+1)*2+80)

# define EVP_DECODE_LENGTH(l)    ((l+3)/4*3+80)

# define EVP_SignInit_ex(a,b,c)          EVP_DigestInit_ex(a,b,c)

# define EVP_SignInit(a,b)               EVP_DigestInit(a,b)

# define EVP_SignUpdate(a,b,c)           EVP_DigestUpdate(a,b,c)

# define EVP_VerifyInit_ex(a,b,c)        EVP_DigestInit_ex(a,b,c)

# define EVP_VerifyInit(a,b)             EVP_DigestInit(a,b)

# define EVP_VerifyUpdate(a,b,c)         EVP_DigestUpdate(a,b,c)

# define EVP_OpenUpdate(a,b,c,d,e)       EVP_DecryptUpdate(a,b,c,d,e)

# define EVP_SealUpdate(a,b,c,d,e)       EVP_EncryptUpdate(a,b,c,d,e)

# define EVP_DigestSignUpdate(a,b,c)     EVP_DigestUpdate(a,b,c)

# define EVP_DigestVerifyUpdate(a,b,c)   EVP_DigestUpdate(a,b,c)

# ifdef CONST_STRICT

void BIO_set_md(BIO *, const EVP_MD *md);

# else

#  define BIO_set_md(b,md)               BIO_ctrl(b,BIO_C_SET_MD,0,(char *)md)

# endif

# define BIO_get_md(b,mdp)               BIO_ctrl(b,BIO_C_GET_MD,0,(char *)mdp)

# define BIO_get_md_ctx(b,mdcp)     BIO_ctrl(b,BIO_C_GET_MD_CTX,0,(char *)mdcp)

# define BIO_set_md_ctx(b,mdcp)     BIO_ctrl(b,BIO_C_SET_MD_CTX,0,(char *)mdcp)

# define BIO_get_cipher_status(b)        BIO_ctrl(b,BIO_C_GET_CIPHER_STATUS,0,NULL)

# define BIO_get_cipher_ctx(b,c_pp)      BIO_ctrl(b,BIO_C_GET_CIPHER_CTX,0,(char *)c_pp)

int EVP_Cipher(EVP_CIPHER_CTX *c,

               unsigned char *out, const unsigned char *in, unsigned int inl);

# define EVP_add_cipher_alias(n,alias) \

        OBJ_NAME_add((alias),OBJ_NAME_TYPE_CIPHER_METH|OBJ_NAME_ALIAS,(n))

# define EVP_add_digest_alias(n,alias) \

        OBJ_NAME_add((alias),OBJ_NAME_TYPE_MD_METH|OBJ_NAME_ALIAS,(n))

# define EVP_delete_cipher_alias(alias) \

        OBJ_NAME_remove(alias,OBJ_NAME_TYPE_CIPHER_METH|OBJ_NAME_ALIAS);

# define EVP_delete_digest_alias(alias) \

        OBJ_NAME_remove(alias,OBJ_NAME_TYPE_MD_METH|OBJ_NAME_ALIAS);

void EVP_MD_CTX_init(EVP_MD_CTX *ctx);

int EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx);

EVP_MD_CTX *EVP_MD_CTX_create(void);

void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx);

int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in);

void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, int flags);

void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, int flags);

int EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags);

int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl);

int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *d, size_t cnt);

int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *s);

int EVP_Digest(const void *data, size_t count,

               unsigned char *md, unsigned int *size, const EVP_MD *type,

               ENGINE *impl);

int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in);

int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type);

int EVP_DigestFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *s);

int EVP_read_pw_string(char *buf, int length, const char *prompt, int verify);

int EVP_read_pw_string_min(char *buf, int minlen, int maxlen,

                           const char *prompt, int verify);

void EVP_set_pw_prompt(const char *prompt);

char *EVP_get_pw_prompt(void);

int EVP_BytesToKey(const EVP_CIPHER *type, const EVP_MD *md,

                   const unsigned char *salt, const unsigned char *data,

                   int datal, int count, unsigned char *key,

                   unsigned char *iv);

void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX *ctx, int flags);

void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX *ctx, int flags);

int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX *ctx, int flags);

int EVP_EncryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,

                    const unsigned char *key, const unsigned char *iv);

int EVP_EncryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,

                       ENGINE *impl, const unsigned char *key,

                       const unsigned char *iv);

int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,

                      const unsigned char *in, int inl);

int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl);

int EVP_EncryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl);

int EVP_DecryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,

                    const unsigned char *key, const unsigned char *iv);

int EVP_DecryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,

                       ENGINE *impl, const unsigned char *key,

                       const unsigned char *iv);

int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,

                      const unsigned char *in, int inl);

int EVP_DecryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);

int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);

int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,

                   const unsigned char *key, const unsigned char *iv,

                   int enc);

int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,

                      ENGINE *impl, const unsigned char *key,

                      const unsigned char *iv, int enc);

int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,

                     const unsigned char *in, int inl);

int EVP_CipherFinal(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);

int EVP_CipherFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);

int EVP_SignFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *s,

                  EVP_PKEY *pkey);

int EVP_VerifyFinal(EVP_MD_CTX *ctx, const unsigned char *sigbuf,

                    unsigned int siglen, EVP_PKEY *pkey);

int EVP_DigestSignInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,

                       const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey);

int EVP_DigestSignFinal(EVP_MD_CTX *ctx,

                        unsigned char *sigret, size_t *siglen);

int EVP_DigestVerifyInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,

                         const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey);

int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, unsigned char *sig, size_t siglen);

int EVP_OpenInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *type,

                 const unsigned char *ek, int ekl, const unsigned char *iv,

                 EVP_PKEY *priv);

int EVP_OpenFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl);

int EVP_SealInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *type,

                 unsigned char **ek, int *ekl, unsigned char *iv,

                 EVP_PKEY **pubk, int npubk);

int EVP_SealFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl);

void EVP_EncodeInit(EVP_ENCODE_CTX *ctx);

void EVP_EncodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,

                      const unsigned char *in, int inl);

void EVP_EncodeFinal(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl);

int EVP_EncodeBlock(unsigned char *t, const unsigned char *f, int n);

void EVP_DecodeInit(EVP_ENCODE_CTX *ctx);

int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,

                     const unsigned char *in, int inl);

int EVP_DecodeFinal(EVP_ENCODE_CTX *ctx, unsigned

                    char *out, int *outl);

int EVP_DecodeBlock(unsigned char *t, const unsigned char *f, int n);

void EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *a);

int EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *a);

EVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void);

void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *a);

int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *x, int keylen);

int EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *c, int pad);

int EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr);

int EVP_CIPHER_CTX_rand_key(EVP_CIPHER_CTX *ctx, unsigned char *key);

# ifndef OPENSSL_NO_BIO

BIO_METHOD *BIO_f_md(void);

BIO_METHOD *BIO_f_base64(void);

BIO_METHOD *BIO_f_cipher(void);

BIO_METHOD *BIO_f_reliable(void);

void BIO_set_cipher(BIO *b, const EVP_CIPHER *c, const unsigned char *k,

                    const unsigned char *i, int enc);

# endif

const EVP_MD *EVP_md_null(void);

# ifndef OPENSSL_NO_MD2

const EVP_MD *EVP_md2(void);

# endif

# ifndef OPENSSL_NO_MD4

const EVP_MD *EVP_md4(void);

# endif

# ifndef OPENSSL_NO_MD5

const EVP_MD *EVP_md5(void);

# endif

# ifndef OPENSSL_NO_SHA

const EVP_MD *EVP_sha(void);

const EVP_MD *EVP_sha1(void);

const EVP_MD *EVP_dss(void);

const EVP_MD *EVP_dss1(void);

const EVP_MD *EVP_ecdsa(void);

# endif

# ifndef OPENSSL_NO_SHA256

const EVP_MD *EVP_sha224(void);

const EVP_MD *EVP_sha256(void);

# endif

# ifndef OPENSSL_NO_SHA512

const EVP_MD *EVP_sha384(void);

const EVP_MD *EVP_sha512(void);

# endif

# ifndef OPENSSL_NO_MDC2

const EVP_MD *EVP_mdc2(void);

# endif

# ifndef OPENSSL_NO_RIPEMD

const EVP_MD *EVP_ripemd160(void);

# endif

# ifndef OPENSSL_NO_WHIRLPOOL

const EVP_MD *EVP_whirlpool(void);

# endif

const EVP_CIPHER *EVP_enc_null(void); /* does nothing :-) */

# ifndef OPENSSL_NO_DES

const EVP_CIPHER *EVP_des_ecb(void);

const EVP_CIPHER *EVP_des_ede(void);

const EVP_CIPHER *EVP_des_ede3(void);

const EVP_CIPHER *EVP_des_ede_ecb(void);

const EVP_CIPHER *EVP_des_ede3_ecb(void);

const EVP_CIPHER *EVP_des_cfb64(void);

#  define EVP_des_cfb EVP_des_cfb64

const EVP_CIPHER *EVP_des_cfb1(void);

const EVP_CIPHER *EVP_des_cfb8(void);

const EVP_CIPHER *EVP_des_ede_cfb64(void);

#  define EVP_des_ede_cfb EVP_des_ede_cfb64

#  if 0

const EVP_CIPHER *EVP_des_ede_cfb1(void);

const EVP_CIPHER *EVP_des_ede_cfb8(void);

#  endif

const EVP_CIPHER *EVP_des_ede3_cfb64(void);

#  define EVP_des_ede3_cfb EVP_des_ede3_cfb64

const EVP_CIPHER *EVP_des_ede3_cfb1(void);

const EVP_CIPHER *EVP_des_ede3_cfb8(void);

const EVP_CIPHER *EVP_des_ofb(void);

const EVP_CIPHER *EVP_des_ede_ofb(void);

const EVP_CIPHER *EVP_des_ede3_ofb(void);

const EVP_CIPHER *EVP_des_cbc(void);

const EVP_CIPHER *EVP_des_ede_cbc(void);

const EVP_CIPHER *EVP_des_ede3_cbc(void);

const EVP_CIPHER *EVP_desx_cbc(void);

/*

 * This should now be supported through the dev_crypto ENGINE. But also, why

 * are rc4 and md5 declarations made here inside a "NO_DES" precompiler

 * branch?

 */

#  if 0

#   ifdef OPENSSL_OPENBSD_DEV_CRYPTO

const EVP_CIPHER *EVP_dev_crypto_des_ede3_cbc(void);

const EVP_CIPHER *EVP_dev_crypto_rc4(void);

const EVP_MD *EVP_dev_crypto_md5(void);

#   endif

#  endif

# endif

# ifndef OPENSSL_NO_RC4

const EVP_CIPHER *EVP_rc4(void);

const EVP_CIPHER *EVP_rc4_40(void);

#  ifndef OPENSSL_NO_MD5

const EVP_CIPHER *EVP_rc4_hmac_md5(void);

#  endif

# endif

# ifndef OPENSSL_NO_IDEA

const EVP_CIPHER *EVP_idea_ecb(void);

const EVP_CIPHER *EVP_idea_cfb64(void);

#  define EVP_idea_cfb EVP_idea_cfb64

const EVP_CIPHER *EVP_idea_ofb(void);

const EVP_CIPHER *EVP_idea_cbc(void);

# endif

# ifndef OPENSSL_NO_RC2

const EVP_CIPHER *EVP_rc2_ecb(void);

const EVP_CIPHER *EVP_rc2_cbc(void);

const EVP_CIPHER *EVP_rc2_40_cbc(void);

const EVP_CIPHER *EVP_rc2_64_cbc(void);

const EVP_CIPHER *EVP_rc2_cfb64(void);

#  define EVP_rc2_cfb EVP_rc2_cfb64

const EVP_CIPHER *EVP_rc2_ofb(void);

# endif

# ifndef OPENSSL_NO_BF

const EVP_CIPHER *EVP_bf_ecb(void);

const EVP_CIPHER *EVP_bf_cbc(void);

const EVP_CIPHER *EVP_bf_cfb64(void);

#  define EVP_bf_cfb EVP_bf_cfb64

const EVP_CIPHER *EVP_bf_ofb(void);

# endif

# ifndef OPENSSL_NO_CAST

const EVP_CIPHER *EVP_cast5_ecb(void);

const EVP_CIPHER *EVP_cast5_cbc(void);

const EVP_CIPHER *EVP_cast5_cfb64(void);

#  define EVP_cast5_cfb EVP_cast5_cfb64

const EVP_CIPHER *EVP_cast5_ofb(void);

# endif

# ifndef OPENSSL_NO_RC5

const EVP_CIPHER *EVP_rc5_32_12_16_cbc(void);

const EVP_CIPHER *EVP_rc5_32_12_16_ecb(void);

const EVP_CIPHER *EVP_rc5_32_12_16_cfb64(void);

#  define EVP_rc5_32_12_16_cfb EVP_rc5_32_12_16_cfb64

const EVP_CIPHER *EVP_rc5_32_12_16_ofb(void);

# endif

# ifndef OPENSSL_NO_AES

const EVP_CIPHER *EVP_aes_128_ecb(void);

const EVP_CIPHER *EVP_aes_128_cbc(void);

const EVP_CIPHER *EVP_aes_128_cfb1(void);

const EVP_CIPHER *EVP_aes_128_cfb8(void);

const EVP_CIPHER *EVP_aes_128_cfb128(void);

#  define EVP_aes_128_cfb EVP_aes_128_cfb128

const EVP_CIPHER *EVP_aes_128_ofb(void);

const EVP_CIPHER *EVP_aes_128_ctr(void);

const EVP_CIPHER *EVP_aes_128_ccm(void);

const EVP_CIPHER *EVP_aes_128_gcm(void);

const EVP_CIPHER *EVP_aes_128_xts(void);

const EVP_CIPHER *EVP_aes_192_ecb(void);

const EVP_CIPHER *EVP_aes_192_cbc(void);

const EVP_CIPHER *EVP_aes_192_cfb1(void);

const EVP_CIPHER *EVP_aes_192_cfb8(void);

const EVP_CIPHER *EVP_aes_192_cfb128(void);

#  define EVP_aes_192_cfb EVP_aes_192_cfb128

const EVP_CIPHER *EVP_aes_192_ofb(void);

const EVP_CIPHER *EVP_aes_192_ctr(void);

const EVP_CIPHER *EVP_aes_192_ccm(void);

const EVP_CIPHER *EVP_aes_192_gcm(void);

const EVP_CIPHER *EVP_aes_256_ecb(void);

const EVP_CIPHER *EVP_aes_256_cbc(void);

const EVP_CIPHER *EVP_aes_256_cfb1(void);

const EVP_CIPHER *EVP_aes_256_cfb8(void);

const EVP_CIPHER *EVP_aes_256_cfb128(void);

#  define EVP_aes_256_cfb EVP_aes_256_cfb128

const EVP_CIPHER *EVP_aes_256_ofb(void);

const EVP_CIPHER *EVP_aes_256_ctr(void);

const EVP_CIPHER *EVP_aes_256_ccm(void);

const EVP_CIPHER *EVP_aes_256_gcm(void);

const EVP_CIPHER *EVP_aes_256_xts(void);

#  if !defined(OPENSSL_NO_SHA) && !defined(OPENSSL_NO_SHA1)

const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void);

const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void);

#  endif

# endif

# ifndef OPENSSL_NO_CAMELLIA

const EVP_CIPHER *EVP_camellia_128_ecb(void);

const EVP_CIPHER *EVP_camellia_128_cbc(void);

const EVP_CIPHER *EVP_camellia_128_cfb1(void);

const EVP_CIPHER *EVP_camellia_128_cfb8(void);

const EVP_CIPHER *EVP_camellia_128_cfb128(void);

#  define EVP_camellia_128_cfb EVP_camellia_128_cfb128

const EVP_CIPHER *EVP_camellia_128_ofb(void);

const EVP_CIPHER *EVP_camellia_192_ecb(void);

const EVP_CIPHER *EVP_camellia_192_cbc(void);

const EVP_CIPHER *EVP_camellia_192_cfb1(void);

const EVP_CIPHER *EVP_camellia_192_cfb8(void);

const EVP_CIPHER *EVP_camellia_192_cfb128(void);

#  define EVP_camellia_192_cfb EVP_camellia_192_cfb128

const EVP_CIPHER *EVP_camellia_192_ofb(void);

const EVP_CIPHER *EVP_camellia_256_ecb(void);

const EVP_CIPHER *EVP_camellia_256_cbc(void);

const EVP_CIPHER *EVP_camellia_256_cfb1(void);

const EVP_CIPHER *EVP_camellia_256_cfb8(void);

const EVP_CIPHER *EVP_camellia_256_cfb128(void);

#  define EVP_camellia_256_cfb EVP_camellia_256_cfb128

const EVP_CIPHER *EVP_camellia_256_ofb(void);

# endif

# ifndef OPENSSL_NO_SEED

const EVP_CIPHER *EVP_seed_ecb(void);

const EVP_CIPHER *EVP_seed_cbc(void);

const EVP_CIPHER *EVP_seed_cfb128(void);

#  define EVP_seed_cfb EVP_seed_cfb128

const EVP_CIPHER *EVP_seed_ofb(void);

# endif

void OPENSSL_add_all_algorithms_noconf(void);

void OPENSSL_add_all_algorithms_conf(void);

# ifdef OPENSSL_LOAD_CONF

#  define OpenSSL_add_all_algorithms() \

                OPENSSL_add_all_algorithms_conf()

# else

#  define OpenSSL_add_all_algorithms() \

                OPENSSL_add_all_algorithms_noconf()

# endif

void OpenSSL_add_all_ciphers(void);

void OpenSSL_add_all_digests(void);

# define SSLeay_add_all_algorithms() OpenSSL_add_all_algorithms()

# define SSLeay_add_all_ciphers() OpenSSL_add_all_ciphers()

# define SSLeay_add_all_digests() OpenSSL_add_all_digests()

int EVP_add_cipher(const EVP_CIPHER *cipher);

int EVP_add_digest(const EVP_MD *digest);

const EVP_CIPHER *EVP_get_cipherbyname(const char *name);

const EVP_MD *EVP_get_digestbyname(const char *name);

void EVP_cleanup(void);

void EVP_CIPHER_do_all(void (*fn) (const EVP_CIPHER *ciph,

                                   const char *from, const char *to, void *x),

                       void *arg);

void EVP_CIPHER_do_all_sorted(void (*fn)

                               (const EVP_CIPHER *ciph, const char *from,

                                const char *to, void *x), void *arg);

void EVP_MD_do_all(void (*fn) (const EVP_MD *ciph,

                               const char *from, const char *to, void *x),

                   void *arg);

void EVP_MD_do_all_sorted(void (*fn)

                           (const EVP_MD *ciph, const char *from,

                            const char *to, void *x), void *arg);

int EVP_PKEY_decrypt_old(unsigned char *dec_key,

                         const unsigned char *enc_key, int enc_key_len,

                         EVP_PKEY *private_key);

int EVP_PKEY_encrypt_old(unsigned char *enc_key,

                         const unsigned char *key, int key_len,

                         EVP_PKEY *pub_key);

int EVP_PKEY_type(int type);

int EVP_PKEY_id(const EVP_PKEY *pkey);

int EVP_PKEY_base_id(const EVP_PKEY *pkey);

int EVP_PKEY_bits(EVP_PKEY *pkey);

int EVP_PKEY_size(EVP_PKEY *pkey);

int EVP_PKEY_set_type(EVP_PKEY *pkey, int type);

int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len);

int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key);

void *EVP_PKEY_get0(EVP_PKEY *pkey);

# ifndef OPENSSL_NO_RSA

struct rsa_st;

int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, struct rsa_st *key);

struct rsa_st *EVP_PKEY_get1_RSA(EVP_PKEY *pkey);

# endif

# ifndef OPENSSL_NO_DSA

struct dsa_st;

int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, struct dsa_st *key);

struct dsa_st *EVP_PKEY_get1_DSA(EVP_PKEY *pkey);

# endif

# ifndef OPENSSL_NO_DH

struct dh_st;

int EVP_PKEY_set1_DH(EVP_PKEY *pkey, struct dh_st *key);

struct dh_st *EVP_PKEY_get1_DH(EVP_PKEY *pkey);