path: root/contrib/libs/openssl/include/crypto/evp.h

/* 
 * Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved. 
 * 
 * Licensed under the OpenSSL license (the "License").  You may not use 
 * this file except in compliance with the License.  You can obtain a copy 
 * in the file LICENSE in the source distribution or at 
 * https://www.openssl.org/source/license.html 
 */ 
 
#include <openssl/evp.h> 
#include "internal/refcount.h" 
 
/* 
 * Don't free up md_ctx->pctx in EVP_MD_CTX_reset, use the reserved flag 
 * values in evp.h 
 */ 
#define EVP_MD_CTX_FLAG_KEEP_PKEY_CTX   0x0400 
 
struct evp_pkey_ctx_st { 
    /* Method associated with this operation */ 
    const EVP_PKEY_METHOD *pmeth; 
    /* Engine that implements this method or NULL if builtin */ 
    ENGINE *engine; 
    /* Key: may be NULL */ 
    EVP_PKEY *pkey; 
    /* Peer key for key agreement, may be NULL */ 
    EVP_PKEY *peerkey; 
    /* Actual operation */ 
    int operation; 
    /* Algorithm specific data */ 
    void *data; 
    /* Application specific data */ 
    void *app_data; 
    /* Keygen callback */ 
    EVP_PKEY_gen_cb *pkey_gencb; 
    /* implementation specific keygen data */ 
    int *keygen_info; 
    int keygen_info_count; 
} /* EVP_PKEY_CTX */ ; 
 
#define EVP_PKEY_FLAG_DYNAMIC   1 
 
struct evp_pkey_method_st { 
    int pkey_id; 
    int flags; 
    int (*init) (EVP_PKEY_CTX *ctx); 
    int (*copy) (EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src); 
    void (*cleanup) (EVP_PKEY_CTX *ctx); 
    int (*paramgen_init) (EVP_PKEY_CTX *ctx); 
    int (*paramgen) (EVP_PKEY_CTX *ctx, EVP_PKEY *pkey); 
    int (*keygen_init) (EVP_PKEY_CTX *ctx); 
    int (*keygen) (EVP_PKEY_CTX *ctx, EVP_PKEY *pkey); 
    int (*sign_init) (EVP_PKEY_CTX *ctx); 
    int (*sign) (EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen, 
                 const unsigned char *tbs, size_t tbslen); 
    int (*verify_init) (EVP_PKEY_CTX *ctx); 
    int (*verify) (EVP_PKEY_CTX *ctx, 
                   const unsigned char *sig, size_t siglen, 
                   const unsigned char *tbs, size_t tbslen); 
    int (*verify_recover_init) (EVP_PKEY_CTX *ctx); 
    int (*verify_recover) (EVP_PKEY_CTX *ctx, 
                           unsigned char *rout, size_t *routlen, 
                           const unsigned char *sig, size_t siglen); 
    int (*signctx_init) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx); 
    int (*signctx) (EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen, 
                    EVP_MD_CTX *mctx); 
    int (*verifyctx_init) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx); 
    int (*verifyctx) (EVP_PKEY_CTX *ctx, const unsigned char *sig, int siglen, 
                      EVP_MD_CTX *mctx); 
    int (*encrypt_init) (EVP_PKEY_CTX *ctx); 
    int (*encrypt) (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, 
                    const unsigned char *in, size_t inlen); 
    int (*decrypt_init) (EVP_PKEY_CTX *ctx); 
    int (*decrypt) (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, 
                    const unsigned char *in, size_t inlen); 
    int (*derive_init) (EVP_PKEY_CTX *ctx); 
    int (*derive) (EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen); 
    int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1, void *p2); 
    int (*ctrl_str) (EVP_PKEY_CTX *ctx, const char *type, const char *value); 
    int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen, 
                       const unsigned char *tbs, size_t tbslen); 
    int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig, 
                         size_t siglen, const unsigned char *tbs, 
                         size_t tbslen); 
    int (*check) (EVP_PKEY *pkey); 
    int (*public_check) (EVP_PKEY *pkey); 
    int (*param_check) (EVP_PKEY *pkey); 
 
    int (*digest_custom) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx); 
} /* EVP_PKEY_METHOD */ ; 
 
DEFINE_STACK_OF_CONST(EVP_PKEY_METHOD) 
 
void evp_pkey_set_cb_translate(BN_GENCB *cb, EVP_PKEY_CTX *ctx); 
 
extern const EVP_PKEY_METHOD cmac_pkey_meth; 
extern const EVP_PKEY_METHOD dh_pkey_meth; 
extern const EVP_PKEY_METHOD dhx_pkey_meth; 
extern const EVP_PKEY_METHOD dsa_pkey_meth; 
extern const EVP_PKEY_METHOD ec_pkey_meth; 
extern const EVP_PKEY_METHOD sm2_pkey_meth; 
extern const EVP_PKEY_METHOD ecx25519_pkey_meth; 
extern const EVP_PKEY_METHOD ecx448_pkey_meth; 
extern const EVP_PKEY_METHOD ed25519_pkey_meth; 
extern const EVP_PKEY_METHOD ed448_pkey_meth; 
extern const EVP_PKEY_METHOD hmac_pkey_meth; 
extern const EVP_PKEY_METHOD rsa_pkey_meth; 
extern const EVP_PKEY_METHOD rsa_pss_pkey_meth; 
extern const EVP_PKEY_METHOD scrypt_pkey_meth; 
extern const EVP_PKEY_METHOD tls1_prf_pkey_meth; 
extern const EVP_PKEY_METHOD hkdf_pkey_meth; 
extern const EVP_PKEY_METHOD poly1305_pkey_meth; 
extern const EVP_PKEY_METHOD siphash_pkey_meth; 
 
struct evp_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); 
    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 */ ; 
 
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 */ ; 
 
/* Macros to code block cipher wrappers */ 
 
/* Wrapper functions for each cipher mode */ 
 
#define EVP_C_DATA(kstruct, ctx) \ 
        ((kstruct *)EVP_CIPHER_CTX_get_cipher_data(ctx)) 
 
#define BLOCK_CIPHER_ecb_loop() \ 
        size_t i, bl; \ 
        bl = EVP_CIPHER_CTX_cipher(ctx)->block_size;    \ 
        if (inl < bl) return 1;\ 
        inl -= bl; \ 
        for (i=0; i <= inl; i+=bl) 
 
#define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \ 
static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \ 
{\ 
        BLOCK_CIPHER_ecb_loop() \ 
            cprefix##_ecb_encrypt(in + i, out + i, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_encrypting(ctx)); \ 
        return 1;\ 
} 
 
#define EVP_MAXCHUNK ((size_t)1<<(sizeof(long)*8-2)) 
 
#define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \ 
    static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \ 
{\ 
        while(inl>=EVP_MAXCHUNK) {\ 
            int num = EVP_CIPHER_CTX_num(ctx);\ 
            cprefix##_ofb##cbits##_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), &num); \ 
            EVP_CIPHER_CTX_set_num(ctx, num);\ 
            inl-=EVP_MAXCHUNK;\ 
            in +=EVP_MAXCHUNK;\ 
            out+=EVP_MAXCHUNK;\ 
        }\ 
        if (inl) {\ 
            int num = EVP_CIPHER_CTX_num(ctx);\ 
            cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), &num); \ 
            EVP_CIPHER_CTX_set_num(ctx, num);\ 
        }\ 
        return 1;\ 
} 
 
#define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \ 
static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \ 
{\ 
        while(inl>=EVP_MAXCHUNK) \ 
            {\ 
            cprefix##_cbc_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));\ 
            inl-=EVP_MAXCHUNK;\ 
            in +=EVP_MAXCHUNK;\ 
            out+=EVP_MAXCHUNK;\ 
            }\ 
        if (inl)\ 
            cprefix##_cbc_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));\ 
        return 1;\ 
} 
 
#define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched)  \ 
static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \ 
{\ 
    size_t chunk = EVP_MAXCHUNK;\ 
    if (cbits == 1)  chunk >>= 3;\ 
    if (inl < chunk) chunk = inl;\ 
    while (inl && inl >= chunk)\ 
    {\ 
        int num = EVP_CIPHER_CTX_num(ctx);\ 
        cprefix##_cfb##cbits##_encrypt(in, out, (long) \ 
            ((cbits == 1) \ 
                && !EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS) \ 
                ? chunk*8 : chunk), \ 
            &EVP_C_DATA(kstruct, ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx),\ 
            &num, EVP_CIPHER_CTX_encrypting(ctx));\ 
        EVP_CIPHER_CTX_set_num(ctx, num);\ 
        inl -= chunk;\ 
        in += chunk;\ 
        out += chunk;\ 
        if (inl < chunk) chunk = inl;\ 
    }\ 
    return 1;\ 
} 
 
#define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \ 
        BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \ 
        BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \ 
        BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \ 
        BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) 
 
#define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \ 
                          key_len, iv_len, flags, init_key, cleanup, \ 
                          set_asn1, get_asn1, ctrl) \ 
static const EVP_CIPHER cname##_##mode = { \ 
        nid##_##nmode, block_size, key_len, iv_len, \ 
        flags | EVP_CIPH_##MODE##_MODE, \ 
        init_key, \ 
        cname##_##mode##_cipher, \ 
        cleanup, \ 
        sizeof(kstruct), \ 
        set_asn1, get_asn1,\ 
        ctrl, \ 
        NULL \ 
}; \ 
const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; } 
 
#define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \ 
                             iv_len, flags, init_key, cleanup, set_asn1, \ 
                             get_asn1, ctrl) \ 
BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \ 
                  iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl) 
 
#define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \ 
                             iv_len, cbits, flags, init_key, cleanup, \ 
                             set_asn1, get_asn1, ctrl) \ 
BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \ 
                  key_len, iv_len, flags, init_key, cleanup, set_asn1, \ 
                  get_asn1, ctrl) 
 
#define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \ 
                             iv_len, cbits, flags, init_key, cleanup, \ 
                             set_asn1, get_asn1, ctrl) \ 
BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \ 
                  key_len, iv_len, flags, init_key, cleanup, set_asn1, \ 
                  get_asn1, ctrl) 
 
#define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \ 
                             flags, init_key, cleanup, set_asn1, \ 
                             get_asn1, ctrl) \ 
BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \ 
                  0, flags, init_key, cleanup, set_asn1, get_asn1, ctrl) 
 
#define BLOCK_CIPHER_defs(cname, kstruct, \ 
                          nid, block_size, key_len, iv_len, cbits, flags, \ 
                          init_key, cleanup, set_asn1, get_asn1, ctrl) \ 
BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \ 
                     init_key, cleanup, set_asn1, get_asn1, ctrl) \ 
BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \ 
                     flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \ 
BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \ 
                     flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \ 
BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, flags, \ 
                     init_key, cleanup, set_asn1, get_asn1, ctrl) 
 
/*- 
#define BLOCK_CIPHER_defs(cname, kstruct, \ 
                                nid, block_size, key_len, iv_len, flags,\ 
                                 init_key, cleanup, set_asn1, get_asn1, ctrl)\ 
static const EVP_CIPHER cname##_cbc = {\ 
        nid##_cbc, block_size, key_len, iv_len, \ 
        flags | EVP_CIPH_CBC_MODE,\ 
        init_key,\ 
        cname##_cbc_cipher,\ 
        cleanup,\ 
        sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\ 
                sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\ 
        set_asn1, get_asn1,\ 
        ctrl, \ 
        NULL \ 
};\ 
const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\ 
static const EVP_CIPHER cname##_cfb = {\ 
        nid##_cfb64, 1, key_len, iv_len, \ 
        flags | EVP_CIPH_CFB_MODE,\ 
        init_key,\ 
        cname##_cfb_cipher,\ 
        cleanup,\ 
        sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\ 
                sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\ 
        set_asn1, get_asn1,\ 
        ctrl,\ 
        NULL \ 
};\ 
const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\ 
static const EVP_CIPHER cname##_ofb = {\ 
        nid##_ofb64, 1, key_len, iv_len, \ 
        flags | EVP_CIPH_OFB_MODE,\ 
        init_key,\ 
        cname##_ofb_cipher,\ 
        cleanup,\ 
        sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\ 
                sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\ 
        set_asn1, get_asn1,\ 
        ctrl,\ 
        NULL \ 
};\ 
const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\ 
static const EVP_CIPHER cname##_ecb = {\ 
        nid##_ecb, block_size, key_len, iv_len, \ 
        flags | EVP_CIPH_ECB_MODE,\ 
        init_key,\ 
        cname##_ecb_cipher,\ 
        cleanup,\ 
        sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\ 
                sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\ 
        set_asn1, get_asn1,\ 
        ctrl,\ 
        NULL \ 
};\ 
const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; } 
*/ 
 
#define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \ 
                               block_size, key_len, iv_len, cbits, \ 
                               flags, init_key, \ 
                               cleanup, set_asn1, get_asn1, ctrl) \ 
        BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \ 
        BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \ 
                          cbits, flags, init_key, cleanup, set_asn1, \ 
                          get_asn1, ctrl) 
 
#define IMPLEMENT_CFBR(cipher,cprefix,kstruct,ksched,keysize,cbits,iv_len,fl) \ 
        BLOCK_CIPHER_func_cfb(cipher##_##keysize,cprefix,cbits,kstruct,ksched) \ 
        BLOCK_CIPHER_def_cfb(cipher##_##keysize,kstruct, \ 
                             NID_##cipher##_##keysize, keysize/8, iv_len, cbits, \ 
                             (fl)|EVP_CIPH_FLAG_DEFAULT_ASN1, \ 
                             cipher##_init_key, NULL, NULL, NULL, NULL) 
 
 
# ifndef OPENSSL_NO_EC 
 
#define X25519_KEYLEN        32 
#define X448_KEYLEN          56 
#define ED448_KEYLEN         57 
 
#define MAX_KEYLEN  ED448_KEYLEN 
 
typedef struct { 
    unsigned char pubkey[MAX_KEYLEN]; 
    unsigned char *privkey; 
} ECX_KEY; 
 
#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; 
    CRYPTO_REF_COUNT references; 
    const EVP_PKEY_ASN1_METHOD *ameth; 
    ENGINE *engine; 
    ENGINE *pmeth_engine; /* If not NULL public key ENGINE to use */ 
    union { 
        void *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 */ 
        ECX_KEY *ecx;           /* X25519, X448, Ed25519, Ed448 */ 
# endif 
    } pkey; 
    int save_parameters; 
    STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */ 
    CRYPTO_RWLOCK *lock; 
} /* EVP_PKEY */ ; 
 
 
void openssl_add_all_ciphers_int(void); 
void openssl_add_all_digests_int(void); 
void evp_cleanup_int(void); 
void evp_app_cleanup_int(void); 
 
/* Pulling defines out of C source files */ 
 
#define EVP_RC4_KEY_SIZE 16 
#ifndef TLS1_1_VERSION 
# define TLS1_1_VERSION   0x0302 
#endif 
 
void evp_encode_ctx_set_flags(EVP_ENCODE_CTX *ctx, unsigned int flags); 
 
/* EVP_ENCODE_CTX flags */ 
/* Don't generate new lines when encoding */ 
#define EVP_ENCODE_CTX_NO_NEWLINES          1 
/* Use the SRP base64 alphabet instead of the standard one */ 
#define EVP_ENCODE_CTX_USE_SRP_ALPHABET     2