<commit_before>/* crypto/evp/evp.h */
/* Copyright (C) 1995-1998 <NAME> (<EMAIL>)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by <NAME> (<EMAIL>).
 * 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 <NAME> (<EMAIL>).
 *
 * Copyright remains <NAME>'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
 *     <NAME> (<EMAIL>)"
 *    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 <NAME> (<EMAIL>)"
 *
 * 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>

# include <openssl/bio.h>

# 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_DHX    NID_dhpublicnumber
# 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
EVP_MD *EVP_MD_meth_new(int md_type, int pkey_type);
EVP_MD *EVP_MD_meth_dup(const EVP_MD *md);
void EVP_MD_meth_free(EVP_MD *md);

int EVP_MD_meth_set_input_blocksize(EVP_MD *md, int blocksize);
int EVP_MD_meth_set_result_size(EVP_MD *md, int resultsize);
int EVP_MD_meth_set_app_datasize(EVP_MD *md, int datasize);
int EVP_MD_meth_set_flags(EVP_MD *md, unsigned long flags);
int EVP_MD_meth_set_init(EVP_MD *md, int (*init)(EVP_MD_CTX *ctx));
int EVP_MD_meth_set_update(EVP_MD *md, int (*update)(EVP_MD_CTX *ctx,
                                                     const void *data,
                                                     size_t count));
int EVP_MD_meth_set_final(EVP_MD *md, int (*final)(EVP_MD_CTX *ctx,
                                                   unsigned char *md));
int EVP_MD_meth_set_copy(EVP_MD *md, int (*copy)(EVP_MD_CTX *to,
                                                 const EVP_MD_CTX *from));
int EVP_MD_meth_set_cleanup(EVP_MD *md, int (*cleanup)(EVP_MD_CTX *ctx));
int EVP_MD_meth_set_ctrl(EVP_MD *md, int (*ctrl)(EVP_MD_CTX *ctx, int cmd,
                                                 int p1, void *p2));

int EVP_MD_meth_get_input_blocksize(const EVP_MD *md);
int EVP_MD_meth_get_result_size(const EVP_MD *md);
int EVP_MD_meth_get_app_datasize(const EVP_MD *md);
unsigned long EVP_MD_meth_get_flags(const EVP_MD *md);
int (*EVP_MD_meth_get_init(const EVP_MD *md))(EVP_MD_CTX *ctx);
int (*EVP_MD_meth_get_update(const EVP_MD *md))(EVP_MD_CTX *ctx,
                                                const void *data,
                                                size_t count);
int (*EVP_MD_meth_get_final(const EVP_MD *md))(EVP_MD_CTX *ctx,
                                               unsigned char *md);
int (*EVP_MD_meth_get_copy(const EVP_MD *md))(EVP_MD_CTX *to,
                                              const EVP_MD_CTX *from);
int (*EVP_MD_meth_get_cleanup(const EVP_MD *md))(EVP_MD_CTX *ctx);
int (*EVP_MD_meth_get_ctrl(const EVP_MD *md))(EVP_MD_CTX *ctx, int cmd,
                                              int p1, void *p2);

/* digest can only handle a single block */
#  define EVP_MD_FLAG_ONESHOT     0x0001

/* 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

# endif                         /* !EVP_MD */

/* 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 */
/*
 * Some functions such as EVP_DigestSign only finalise copies of internal
 * contexts so additional data can be included after the finalisation call.
 * This is inefficient if this functionality is not required: it is disabled
 * if the following flag is set.
 */
# define EVP_MD_CTX_FLAG_FINALISE        0x0200

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_WRAP_MODE              0x10002
# define         EVP_CIPH_OCB_MODE               0x10003
# 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
# define         EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK 0x400000

/*
 * Cipher context flag to indicate we can handle wrap mode: if allowed in
 * older applications it could overflow buffers.
 */

# define         EVP_CIPHER_CTX_FLAG_WRAP_ALLOW  0x1

/* 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_AEAD_SET_IVLEN         0x9
# define         EVP_CTRL_AEAD_GET_TAG           0x10
# define         EVP_CTRL_AEAD_SET_TAG           0x11
# define         EVP_CTRL_AEAD_SET_IV_FIXED      0x12
# define         EVP_CTRL_GCM_SET_IVLEN          EVP_CTRL_AEAD_SET_IVLEN
# define         EVP_CTRL_GCM_GET_TAG            EVP_CTRL_AEAD_GET_TAG
# define         EVP_CTRL_GCM_SET_TAG            EVP_CTRL_AEAD_SET_TAG
# define         EVP_CTRL_GCM_SET_IV_FIXED       EVP_CTRL_AEAD_SET_IV_FIXED
# define         EVP_CTRL_GCM_IV_GEN             0x13
# define         EVP_CTRL_CCM_SET_IVLEN          EVP_CTRL_AEAD_SET_IVLEN
# define         EVP_CTRL_CCM_GET_TAG            EVP_CTRL_AEAD_GET_TAG
# define         EVP_CTRL_CCM_SET_TAG            EVP_CTRL_AEAD_SET_TAG
# define         EVP_CTRL_CCM_SET_IV_FIXED       EVP_CTRL_AEAD_SET_IV_FIXED
# 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

# define         EVP_CTRL_TLS1_1_MULTIBLOCK_AAD  0x19
# define         EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT      0x1a
# define         EVP_CTRL_TLS1_1_MULTIBLOCK_DECRYPT      0x1b
# define         EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE  0x1c

# define         EVP_CTRL_SSL3_MASTER_SECRET             0x1d

/* EVP_CTRL_SET_SBOX takes the char * specifying S-boxes */
# define         EVP_CTRL_SET_SBOX                       0x1e
/*
 * EVP_CTRL_SBOX_USED takes a 'size_t' and 'char *', pointing at a
 * pre-allocated buffer with specified size
 */
# define         EVP_CTRL_SBOX_USED                      0x1f
/* EVP_CTRL_KEY_MESH takes 'size_t' number of bytes to mesh the key after,
 * 0 switches meshing off
 */
# define         EVP_CTRL_KEY_MESH                       0x20
/* EVP_CTRL_BLOCK_PADDING_MODE takes the padding mode */
# define         EVP_CTRL_BLOCK_PADDING_MODE             0x21

/* Padding modes */
#define EVP_PADDING_PKCS7       1
#define EVP_PADDING_ISO7816_4   2
#define EVP_PADDING_ANSI923     3
#define EVP_PADDING_ISO10126    4
#define EVP_PADDING_ZERO        5

/* RFC 5246 defines additional data to be 13 bytes in length */
# define         EVP_AEAD_TLS1_AAD_LEN           13

typedef struct {
    unsigned char *out;
    const unsigned char *inp;
    size_t len;
    unsigned int interleave;
} EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM;

/* 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

/* CCM TLS constants */
/* Length of fixed part of IV derived from PRF */
# define EVP_CCM_TLS_FIXED_IV_LEN                        4
/* Length of explicit part of IV part of TLS records */
# define EVP_CCM_TLS_EXPLICIT_IV_LEN                     8

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))

/* Macros to reduce FIPS dependencies: do NOT use in applications */
# define M_EVP_CIPHER_nid(e)             ((e)->nid)
# define M_EVP_CIPHER_CTX_iv_length(e)   ((e)->cipher->iv_len)
# define M_EVP_CIPHER_CTX_flags(e)       ((e)->cipher->flags)
# define M_EVP_CIPHER_CTX_block_size(e)  ((e)->cipher->block_size)
# define M_EVP_CIPHER_CTX_cipher(e)      ((e)->cipher)
# define M_EVP_CIPHER_CTX_mode(e)        (M_EVP_CIPHER_CTX_flags(e) & EVP_CIPH_MODE)

# define M_EVP_CIPHER_CTX_set_flags(ctx,flgs) ((ctx)->flags|=(flgs))

# define M_EVP_EncryptInit(ctx,ciph,key,iv) \
        (EVP_CipherInit(ctx,ciph,key,iv,1))
# define M_EVP_EncryptInit_ex(ctx,ciph,impl,key,iv) \
        (EVP_CipherInit_ex(ctx,ciph,impl,key,iv,1))
# define M_EVP_DecryptInit(ctx,ciph,key,iv) \
        (EVP_CipherInit(ctx,ciph,key,iv,0))
# define M_EVP_DecryptInit_ex(ctx,ciph,impl,key,iv) \
        (EVP_CipherInit_ex(ctx,ciph,impl,key,iv,0))

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);
int (*EVP_MD_CTX_update_fn(EVP_MD_CTX *ctx))(EVP_MD_CTX *ctx,
                                             const void *data, size_t count);
void EVP_MD_CTX_set_update_fn(EVP_MD_CTX *ctx,
                              int (*update) (EVP_MD_CTX *ctx,
                                             const void *data, size_t count));
# 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))
EVP_PKEY_CTX *EVP_MD_CTX_pkey_ctx(const EVP_MD_CTX *ctx);
void *EVP_MD_CTX_md_data(const EVP_MD_CTX *ctx);

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)

/*__owur*/ 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);

int EVP_MD_CTX_ctrl(EVP_MD_CTX *ctx, int cmd, int p1, void *p2);
EVP_MD_CTX *EVP_MD_CTX_new(void);
int EVP_MD_CTX_reset(EVP_MD_CTX *ctx);
void EVP_MD_CTX_free(EVP_MD_CTX *ctx);
# ifdef OPENSSL_USE_DEPRECATED
#  define EVP_MD_CTX_create()     EVP_MD_CTX_new()
#  define EVP_MD_CTX_init(ctx)    EVP_MD_CTX_reset((ctx))
#  define EVP_MD_CTX_destroy(ctx) EVP_MD_CTX_free((ctx))
# endif
/*__owur*/ 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);
/*__owur*/ int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type,
                                 ENGINE *impl);
/*__owur*/ int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *d,
                                size_t cnt);
/*__owur*/ int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, unsigned char *md,
                                  unsigned int *s);
/*__owur*/ int EVP_Digest(const void *data, size_t count,
                          unsigned char *md, unsigned int *size,
                          const EVP_MD *type, ENGINE *impl);

/*__owur*/ int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in);
/*__owur*/ int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type);
__owur int EVP_DigestFinal(EVP_MD_CTX *ctx, unsigned char *md,
                           unsigned int *s);<commit_msg>Restore full support for EVP_CTX_create() etc.<commit_after>/* crypto/evp/evp.h */
/* Copyright (C) 1995-1998 <NAME> (<EMAIL>)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by <NAME> (<EMAIL>).
 * 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 <NAME> (<EMAIL>).
 *
 * 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
 *     <NAME>ung (<EMAIL>)"
 *    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 <NAME> (<EMAIL>)"
 *
 * 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>

# include <openssl/bio.h>

# 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_DHX    NID_dhpublicnumber
# 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
EVP_MD *EVP_MD_meth_new(int md_type, int pkey_type);
EVP_MD *EVP_MD_meth_dup(const EVP_MD *md);
void EVP_MD_meth_free(EVP_MD *md);

int EVP_MD_meth_set_input_blocksize(EVP_MD *md, int blocksize);
int EVP_MD_meth_set_result_size(EVP_MD *md, int resultsize);
int EVP_MD_meth_set_app_datasize(EVP_MD *md, int datasize);
int EVP_MD_meth_set_flags(EVP_MD *md, unsigned long flags);
int EVP_MD_meth_set_init(EVP_MD *md, int (*init)(EVP_MD_CTX *ctx));
int EVP_MD_meth_set_update(EVP_MD *md, int (*update)(EVP_MD_CTX *ctx,
                                                     const void *data,
                                                     size_t count));
int EVP_MD_meth_set_final(EVP_MD *md, int (*final)(EVP_MD_CTX *ctx,
                                                   unsigned char *md));
int EVP_MD_meth_set_copy(EVP_MD *md, int (*copy)(EVP_MD_CTX *to,
                                                 const EVP_MD_CTX *from));
int EVP_MD_meth_set_cleanup(EVP_MD *md, int (*cleanup)(EVP_MD_CTX *ctx));
int EVP_MD_meth_set_ctrl(EVP_MD *md, int (*ctrl)(EVP_MD_CTX *ctx, int cmd,
                                                 int p1, void *p2));

int EVP_MD_meth_get_input_blocksize(const EVP_MD *md);
int EVP_MD_meth_get_result_size(const EVP_MD *md);
int EVP_MD_meth_get_app_datasize(const EVP_MD *md);
unsigned long EVP_MD_meth_get_flags(const EVP_MD *md);
int (*EVP_MD_meth_get_init(const EVP_MD *md))(EVP_MD_CTX *ctx);
int (*EVP_MD_meth_get_update(const EVP_MD *md))(EVP_MD_CTX *ctx,
                                                const void *data,
                                                size_t count);
int (*EVP_MD_meth_get_final(const EVP_MD *md))(EVP_MD_CTX *ctx,
                                               unsigned char *md);
int (*EVP_MD_meth_get_copy(const EVP_MD *md))(EVP_MD_CTX *to,
                                              const EVP_MD_CTX *from);
int (*EVP_MD_meth_get_cleanup(const EVP_MD *md))(EVP_MD_CTX *ctx);
int (*EVP_MD_meth_get_ctrl(const EVP_MD *md))(EVP_MD_CTX *ctx, int cmd,
                                              int p1, void *p2);

/* digest can only handle a single block */
#  define EVP_MD_FLAG_ONESHOT     0x0001

/* 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

# endif                         /* !EVP_MD */

/* 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 */
/*
 * Some functions such as EVP_DigestSign only finalise copies of internal
 * contexts so additional data can be included after the finalisation call.
 * This is inefficient if this functionality is not required: it is disabled
 * if the following flag is set.
 */
# define EVP_MD_CTX_FLAG_FINALISE        0x0200

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_WRAP_MODE              0x10002
# define         EVP_CIPH_OCB_MODE               0x10003
# 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
# define         EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK 0x400000

/*
 * Cipher context flag to indicate we can handle wrap mode: if allowed in
 * older applications it could overflow buffers.
 */

# define         EVP_CIPHER_CTX_FLAG_WRAP_ALLOW  0x1

/* 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_AEAD_SET_IVLEN         0x9
# define         EVP_CTRL_AEAD_GET_TAG           0x10
# define         EVP_CTRL_AEAD_SET_TAG           0x11
# define         EVP_CTRL_AEAD_SET_IV_FIXED      0x12
# define         EVP_CTRL_GCM_SET_IVLEN          EVP_CTRL_AEAD_SET_IVLEN
# define         EVP_CTRL_GCM_GET_TAG            EVP_CTRL_AEAD_GET_TAG
# define         EVP_CTRL_GCM_SET_TAG            EVP_CTRL_AEAD_SET_TAG
# define         EVP_CTRL_GCM_SET_IV_FIXED       EVP_CTRL_AEAD_SET_IV_FIXED
# define         EVP_CTRL_GCM_IV_GEN             0x13
# define         EVP_CTRL_CCM_SET_IVLEN          EVP_CTRL_AEAD_SET_IVLEN
# define         EVP_CTRL_CCM_GET_TAG            EVP_CTRL_AEAD_GET_TAG
# define         EVP_CTRL_CCM_SET_TAG            EVP_CTRL_AEAD_SET_TAG
# define         EVP_CTRL_CCM_SET_IV_FIXED       EVP_CTRL_AEAD_SET_IV_FIXED
# 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

# define         EVP_CTRL_TLS1_1_MULTIBLOCK_AAD  0x19
# define         EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT      0x1a
# define         EVP_CTRL_TLS1_1_MULTIBLOCK_DECRYPT      0x1b
# define         EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE  0x1c

# define         EVP_CTRL_SSL3_MASTER_SECRET             0x1d

/* EVP_CTRL_SET_SBOX takes the char * specifying S-boxes */
# define         EVP_CTRL_SET_SBOX                       0x1e
/*
 * EVP_CTRL_SBOX_USED takes a 'size_t' and 'char *', pointing at a
 * pre-allocated buffer with specified size
 */
# define         EVP_CTRL_SBOX_USED                      0x1f
/* EVP_CTRL_KEY_MESH takes 'size_t' number of bytes to mesh the key after,
 * 0 switches meshing off
 */
# define         EVP_CTRL_KEY_MESH                       0x20
/* EVP_CTRL_BLOCK_PADDING_MODE takes the padding mode */
# define         EVP_CTRL_BLOCK_PADDING_MODE             0x21

/* Padding modes */
#define EVP_PADDING_PKCS7       1
#define EVP_PADDING_ISO7816_4   2
#define EVP_PADDING_ANSI923     3
#define EVP_PADDING_ISO10126    4
#define EVP_PADDING_ZERO        5

/* RFC 5246 defines additional data to be 13 bytes in length */
# define         EVP_AEAD_TLS1_AAD_LEN           13

typedef struct {
    unsigned char *out;
    const unsigned char *inp;
    size_t len;
    unsigned int interleave;
} EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM;

/* 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

/* CCM TLS constants */
/* Length of fixed part of IV derived from PRF */
# define EVP_CCM_TLS_FIXED_IV_LEN                        4
/* Length of explicit part of IV part of TLS records */
# define EVP_CCM_TLS_EXPLICIT_IV_LEN                     8

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))

/* Macros to reduce FIPS dependencies: do NOT use in applications */
# define M_EVP_CIPHER_nid(e)             ((e)->nid)
# define M_EVP_CIPHER_CTX_iv_length(e)   ((e)->cipher->iv_len)
# define M_EVP_CIPHER_CTX_flags(e)       ((e)->cipher->flags)
# define M_EVP_CIPHER_CTX_block_size(e)  ((e)->cipher->block_size)
# define M_EVP_CIPHER_CTX_cipher(e)      ((e)->cipher)
# define M_EVP_CIPHER_CTX_mode(e)        (M_EVP_CIPHER_CTX_flags(e) & EVP_CIPH_MODE)

# define M_EVP_CIPHER_CTX_set_flags(ctx,flgs) ((ctx)->flags|=(flgs))

# define M_EVP_EncryptInit(ctx,ciph,key,iv) \
        (EVP_CipherInit(ctx,ciph,key,iv,1))
# define M_EVP_EncryptInit_ex(ctx,ciph,impl,key,iv) \
        (EVP_CipherInit_ex(ctx,ciph,impl,key,iv,1))
# define M_EVP_DecryptInit(ctx,ciph,key,iv) \
        (EVP_CipherInit(ctx,ciph,key,iv,0))
# define M_EVP_DecryptInit_ex(ctx,ciph,impl,key,iv) \
        (EVP_CipherInit_ex(ctx,ciph,impl,key,iv,0))

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);
int (*EVP_MD_CTX_update_fn(EVP_MD_CTX *ctx))(EVP_MD_CTX *ctx,
                                             const void *data, size_t count);
void EVP_MD_CTX_set_update_fn(EVP_MD_CTX *ctx,
                              int (*update) (EVP_MD_CTX *ctx,
                                             const void *data, size_t count));
# 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))
EVP_PKEY_CTX *EVP_MD_CTX_pkey_ctx(const EVP_MD_CTX *ctx);
void *EVP_MD_CTX_md_data(const EVP_MD_CTX *ctx);

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)

/*__owur*/ 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);

int EVP_MD_CTX_ctrl(EVP_MD_CTX *ctx, int cmd, int p1, void *p2);
EVP_MD_CTX *EVP_MD_CTX_new(void);
int EVP_MD_CTX_reset(EVP_MD_CTX *ctx);
void EVP_MD_CTX_free(EVP_MD_CTX *ctx);
# define EVP_MD_CTX_create()     EVP_MD_CTX_new()
# define EVP_MD_CTX_init(ctx)    EVP_MD_CTX_reset((ctx))
# define EVP_MD_CTX_destroy(ctx) EVP_MD_CTX_free((ctx))
/*__owur*/ 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);
/*__owur*/ int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type,
                                 ENGINE *impl);
/*__owur*/ int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *d,
                                size_t cnt);
/*__owur*/ int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, unsigned char *md,
                                  unsigned int *s);
/*__owur*/ int EVP_Digest(const void *data, size_t count,
                          unsigned char *md, unsigned int *size,
                          const EVP_MD *type, ENGINE *impl);

/*__owur*/ int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in);
/*__owur*/ int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type);
__owur int EVP_DigestFinal(EVP_MD_CTX *ctx, unsigned char *md,
                           unsigned int *s);
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