[thirdparty/openssl.git] / crypto / evp / pmeth_lib.c

/*
 * Copyright 2006-2016 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 <stdio.h>
#include <stdlib.h>
#include "internal/cryptlib.h"
#include <openssl/engine.h>
#include <openssl/evp.h>
#include <openssl/x509v3.h>
#include "internal/asn1_int.h"
#include "internal/evp_int.h"
#include "internal/numbers.h"

typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);

static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;

static const EVP_PKEY_METHOD *standard_methods[] = {
#ifndef OPENSSL_NO_RSA
    &rsa_pkey_meth,
#endif
#ifndef OPENSSL_NO_DH
    &dh_pkey_meth,
#endif
#ifndef OPENSSL_NO_DSA
    &dsa_pkey_meth,
#endif
#ifndef OPENSSL_NO_EC
    &ec_pkey_meth,
#endif
    &hmac_pkey_meth,
#ifndef OPENSSL_NO_CMAC
    &cmac_pkey_meth,
#endif
#ifndef OPENSSL_NO_DH
    &dhx_pkey_meth,
#endif
    &tls1_prf_pkey_meth,
    &hkdf_pkey_meth
};

DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
                           pmeth);

static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
                     const EVP_PKEY_METHOD *const *b)
{
    return ((*a)->pkey_id - (*b)->pkey_id);
}

IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
                             pmeth);

const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
{
    EVP_PKEY_METHOD tmp;
    const EVP_PKEY_METHOD *t = &tmp, **ret;
    tmp.pkey_id = type;
    if (app_pkey_methods) {
        int idx;
        idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
        if (idx >= 0)
            return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
    }
    ret = OBJ_bsearch_pmeth(&t, standard_methods,
                            sizeof(standard_methods) /
                            sizeof(EVP_PKEY_METHOD *));
    if (!ret || !*ret)
        return NULL;
    return *ret;
}

static EVP_PKEY_CTX *int_ctx_new(EVP_PKEY *pkey, ENGINE *e, int id)
{
    EVP_PKEY_CTX *ret;
    const EVP_PKEY_METHOD *pmeth;
    if (id == -1) {
        if (!pkey || !pkey->ameth)
            return NULL;
        id = pkey->ameth->pkey_id;
    }
#ifndef OPENSSL_NO_ENGINE
    if (pkey && pkey->engine)
        e = pkey->engine;
    /* Try to find an ENGINE which implements this method */
    if (e) {
        if (!ENGINE_init(e)) {
            EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
            return NULL;
        }
    } else
        e = ENGINE_get_pkey_meth_engine(id);

    /*
     * If an ENGINE handled this method look it up. Otherwise use internal
     * tables.
     */

    if (e)
        pmeth = ENGINE_get_pkey_meth(e, id);
    else
#endif
        pmeth = EVP_PKEY_meth_find(id);

    if (pmeth == NULL) {
        EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
        return NULL;
    }

    ret = OPENSSL_zalloc(sizeof(*ret));
    if (ret == NULL) {
#ifndef OPENSSL_NO_ENGINE
        ENGINE_finish(e);
#endif
        EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
        return NULL;
    }
    ret->engine = e;
    ret->pmeth = pmeth;
    ret->operation = EVP_PKEY_OP_UNDEFINED;
    ret->pkey = pkey;
    if (pkey)
        EVP_PKEY_up_ref(pkey);

    if (pmeth->init) {
        if (pmeth->init(ret) <= 0) {
            EVP_PKEY_CTX_free(ret);
            return NULL;
        }
    }

    return ret;
}

EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
{
    EVP_PKEY_METHOD *pmeth;

    pmeth = OPENSSL_zalloc(sizeof(*pmeth));
    if (pmeth == NULL)
        return NULL;

    pmeth->pkey_id = id;
    pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
    return pmeth;
}

void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
                             const EVP_PKEY_METHOD *meth)
{
    if (ppkey_id)
        *ppkey_id = meth->pkey_id;
    if (pflags)
        *pflags = meth->flags;
}

void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
{

    dst->init = src->init;
    dst->copy = src->copy;
    dst->cleanup = src->cleanup;

    dst->paramgen_init = src->paramgen_init;
    dst->paramgen = src->paramgen;

    dst->keygen_init = src->keygen_init;
    dst->keygen = src->keygen;

    dst->sign_init = src->sign_init;
    dst->sign = src->sign;

    dst->verify_init = src->verify_init;
    dst->verify = src->verify;

    dst->verify_recover_init = src->verify_recover_init;
    dst->verify_recover = src->verify_recover;

    dst->signctx_init = src->signctx_init;
    dst->signctx = src->signctx;

    dst->verifyctx_init = src->verifyctx_init;
    dst->verifyctx = src->verifyctx;

    dst->encrypt_init = src->encrypt_init;
    dst->encrypt = src->encrypt;

    dst->decrypt_init = src->decrypt_init;
    dst->decrypt = src->decrypt;

    dst->derive_init = src->derive_init;
    dst->derive = src->derive;

    dst->ctrl = src->ctrl;
    dst->ctrl_str = src->ctrl_str;
}

void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
{
    if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
        OPENSSL_free(pmeth);
}

EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
{
    return int_ctx_new(pkey, e, -1);
}

EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
{
    return int_ctx_new(NULL, e, id);
}

EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *pctx)
{
    EVP_PKEY_CTX *rctx;
    if (!pctx->pmeth || !pctx->pmeth->copy)
        return NULL;
#ifndef OPENSSL_NO_ENGINE
    /* Make sure it's safe to copy a pkey context using an ENGINE */
    if (pctx->engine && !ENGINE_init(pctx->engine)) {
        EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
        return 0;
    }
#endif
    rctx = OPENSSL_malloc(sizeof(*rctx));
    if (rctx == NULL)
        return NULL;

    rctx->pmeth = pctx->pmeth;
#ifndef OPENSSL_NO_ENGINE
    rctx->engine = pctx->engine;
#endif

    if (pctx->pkey)
        EVP_PKEY_up_ref(pctx->pkey);

    rctx->pkey = pctx->pkey;

    if (pctx->peerkey)
        EVP_PKEY_up_ref(pctx->peerkey);

    rctx->peerkey = pctx->peerkey;

    rctx->data = NULL;
    rctx->app_data = NULL;
    rctx->operation = pctx->operation;

    if (pctx->pmeth->copy(rctx, pctx) > 0)
        return rctx;

    EVP_PKEY_CTX_free(rctx);
    return NULL;

}

int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
{
    if (app_pkey_methods == NULL) {
        app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
        if (app_pkey_methods == NULL)
            return 0;
    }
    if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth))
        return 0;
    sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
    return 1;
}

void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
{
    if (ctx == NULL)
        return;
    if (ctx->pmeth && ctx->pmeth->cleanup)
        ctx->pmeth->cleanup(ctx);
    EVP_PKEY_free(ctx->pkey);
    EVP_PKEY_free(ctx->peerkey);
#ifndef OPENSSL_NO_ENGINE
    ENGINE_finish(ctx->engine);
#endif
    OPENSSL_free(ctx);
}

int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
                      int cmd, int p1, void *p2)
{
    int ret;
    if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl) {
        EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
        return -2;
    }
    if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
        return -1;

    if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
        EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
        return -1;
    }

    if ((optype != -1) && !(ctx->operation & optype)) {
        EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
        return -1;
    }

    ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);

    if (ret == -2)
        EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);

    return ret;

}

int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
                          const char *name, const char *value)
{
    if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
        EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
        return -2;
    }
    if (strcmp(name, "digest") == 0) {
        const EVP_MD *md;
        if (value == NULL || (md = EVP_get_digestbyname(value)) == NULL) {
            EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_INVALID_DIGEST);
            return 0;
        }
        return EVP_PKEY_CTX_set_signature_md(ctx, md);
    }
    return ctx->pmeth->ctrl_str(ctx, name, value);
}

/* Utility functions to send a string of hex string to a ctrl */

int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
{
    size_t len;

    len = strlen(str);
    if (len > INT_MAX)
        return -1;
    return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
}

int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
{
    unsigned char *bin;
    long binlen;
    int rv = -1;

    bin = OPENSSL_hexstr2buf(hex, &binlen);
    if (bin == NULL)
        return 0;
    if (binlen <= INT_MAX)
        rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
    OPENSSL_free(bin);
    return rv;
}

int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
{
    return ctx->operation;
}

void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
{
    ctx->keygen_info = dat;
    ctx->keygen_info_count = datlen;
}

void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
{
    ctx->data = data;
}

void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX *ctx)
{
    return ctx->data;
}

EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
{
    return ctx->pkey;
}

EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
{
    return ctx->peerkey;
}

void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
{
    ctx->app_data = data;
}

void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
{
    return ctx->app_data;
}

void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
                            int (*init) (EVP_PKEY_CTX *ctx))
{
    pmeth->init = init;
}

void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
                            int (*copy) (EVP_PKEY_CTX *dst,
                                         EVP_PKEY_CTX *src))
{
    pmeth->copy = copy;
}

void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
                               void (*cleanup) (EVP_PKEY_CTX *ctx))
{
    pmeth->cleanup = cleanup;
}

void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
                                int (*paramgen_init) (EVP_PKEY_CTX *ctx),
                                int (*paramgen) (EVP_PKEY_CTX *ctx,
                                                 EVP_PKEY *pkey))
{
    pmeth->paramgen_init = paramgen_init;
    pmeth->paramgen = paramgen;
}

void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
                              int (*keygen_init) (EVP_PKEY_CTX *ctx),
                              int (*keygen) (EVP_PKEY_CTX *ctx,
                                             EVP_PKEY *pkey))
{
    pmeth->keygen_init = keygen_init;
    pmeth->keygen = keygen;
}

void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
                            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))
{
    pmeth->sign_init = sign_init;
    pmeth->sign = sign;
}

void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
                              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))
{
    pmeth->verify_init = verify_init;
    pmeth->verify = verify;
}

void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
                                      int (*verify_recover_init) (EVP_PKEY_CTX
                                                                  *ctx),
                                      int (*verify_recover) (EVP_PKEY_CTX
                                                             *ctx,
                                                             unsigned char
                                                             *sig,
                                                             size_t *siglen,
                                                             const unsigned
                                                             char *tbs,
                                                             size_t tbslen))
{
    pmeth->verify_recover_init = verify_recover_init;
    pmeth->verify_recover = verify_recover;
}

void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
                               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))
{
    pmeth->signctx_init = signctx_init;
    pmeth->signctx = signctx;
}

void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
                                 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))
{
    pmeth->verifyctx_init = verifyctx_init;
    pmeth->verifyctx = verifyctx;
}

void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
                               int (*encrypt_init) (EVP_PKEY_CTX *ctx),
                               int (*encryptfn) (EVP_PKEY_CTX *ctx,
                                                 unsigned char *out,
                                                 size_t *outlen,
                                                 const unsigned char *in,
                                                 size_t inlen))
{
    pmeth->encrypt_init = encrypt_init;
    pmeth->encrypt = encryptfn;
}

void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
                               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))
{
    pmeth->decrypt_init = decrypt_init;
    pmeth->decrypt = decrypt;
}

void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
                              int (*derive_init) (EVP_PKEY_CTX *ctx),
                              int (*derive) (EVP_PKEY_CTX *ctx,
                                             unsigned char *key,
                                             size_t *keylen))
{
    pmeth->derive_init = derive_init;
    pmeth->derive = derive;
}

void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
                            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))
{
    pmeth->ctrl = ctrl;
    pmeth->ctrl_str = ctrl_str;
}

void EVP_PKEY_meth_get_init(EVP_PKEY_METHOD *pmeth,
                            int (**pinit) (EVP_PKEY_CTX *ctx))
{
    *pinit = pmeth->init;
}

void EVP_PKEY_meth_get_copy(EVP_PKEY_METHOD *pmeth,
                            int (**pcopy) (EVP_PKEY_CTX *dst,
                                           EVP_PKEY_CTX *src))
{
    *pcopy = pmeth->copy;
}

void EVP_PKEY_meth_get_cleanup(EVP_PKEY_METHOD *pmeth,
                               void (**pcleanup) (EVP_PKEY_CTX *ctx))
{
    *pcleanup = pmeth->cleanup;
}

void EVP_PKEY_meth_get_paramgen(EVP_PKEY_METHOD *pmeth,
                                int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
                                int (**pparamgen) (EVP_PKEY_CTX *ctx,
                                                   EVP_PKEY *pkey))
{
    if (pparamgen_init)
        *pparamgen_init = pmeth->paramgen_init;
    if (pparamgen)
        *pparamgen = pmeth->paramgen;
}

void EVP_PKEY_meth_get_keygen(EVP_PKEY_METHOD *pmeth,
                              int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
                              int (**pkeygen) (EVP_PKEY_CTX *ctx,
                                               EVP_PKEY *pkey))
{
    if (pkeygen_init)
        *pkeygen_init = pmeth->keygen_init;
    if (pkeygen)
        *pkeygen = pmeth->keygen;
}

void EVP_PKEY_meth_get_sign(EVP_PKEY_METHOD *pmeth,
                            int (**psign_init) (EVP_PKEY_CTX *ctx),
                            int (**psign) (EVP_PKEY_CTX *ctx,
                                           unsigned char *sig, size_t *siglen,
                                           const unsigned char *tbs,
                                           size_t tbslen))
{
    if (psign_init)
        *psign_init = pmeth->sign_init;
    if (psign)
        *psign = pmeth->sign;
}

void EVP_PKEY_meth_get_verify(EVP_PKEY_METHOD *pmeth,
                              int (**pverify_init) (EVP_PKEY_CTX *ctx),
                              int (**pverify) (EVP_PKEY_CTX *ctx,
                                               const unsigned char *sig,
                                               size_t siglen,
                                               const unsigned char *tbs,
                                               size_t tbslen))
{
    if (pverify_init)
        *pverify_init = pmeth->verify_init;
    if (pverify)
        *pverify = pmeth->verify;
}

void EVP_PKEY_meth_get_verify_recover(EVP_PKEY_METHOD *pmeth,
                                      int (**pverify_recover_init) (EVP_PKEY_CTX
                                                                    *ctx),
                                      int (**pverify_recover) (EVP_PKEY_CTX
                                                               *ctx,
                                                               unsigned char
                                                               *sig,
                                                               size_t *siglen,
                                                               const unsigned
                                                               char *tbs,
                                                               size_t tbslen))
{
    if (pverify_recover_init)
        *pverify_recover_init = pmeth->verify_recover_init;
    if (pverify_recover)
        *pverify_recover = pmeth->verify_recover;
}

void EVP_PKEY_meth_get_signctx(EVP_PKEY_METHOD *pmeth,
                               int (**psignctx_init) (EVP_PKEY_CTX *ctx,
                                                      EVP_MD_CTX *mctx),
                               int (**psignctx) (EVP_PKEY_CTX *ctx,
                                                 unsigned char *sig,
                                                 size_t *siglen,
                                                 EVP_MD_CTX *mctx))
{
    if (psignctx_init)
        *psignctx_init = pmeth->signctx_init;
    if (psignctx)
        *psignctx = pmeth->signctx;
}

void EVP_PKEY_meth_get_verifyctx(EVP_PKEY_METHOD *pmeth,
                                 int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
                                                          EVP_MD_CTX *mctx),
                                 int (**pverifyctx) (EVP_PKEY_CTX *ctx,
                                                     const unsigned char *sig,
                                                     int siglen,
                                                     EVP_MD_CTX *mctx))
{
    if (pverifyctx_init)
        *pverifyctx_init = pmeth->verifyctx_init;
    if (pverifyctx)
        *pverifyctx = pmeth->verifyctx;
}

void EVP_PKEY_meth_get_encrypt(EVP_PKEY_METHOD *pmeth,
                               int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
                               int (**pencryptfn) (EVP_PKEY_CTX *ctx,
                                                   unsigned char *out,
                                                   size_t *outlen,
                                                   const unsigned char *in,
                                                   size_t inlen))
{
    if (pencrypt_init)
        *pencrypt_init = pmeth->encrypt_init;
    if (pencryptfn)
        *pencryptfn = pmeth->encrypt;
}

void EVP_PKEY_meth_get_decrypt(EVP_PKEY_METHOD *pmeth,
                               int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
                               int (**pdecrypt) (EVP_PKEY_CTX *ctx,
                                                 unsigned char *out,
                                                 size_t *outlen,
                                                 const unsigned char *in,
                                                 size_t inlen))
{
    if (pdecrypt_init)
        *pdecrypt_init = pmeth->decrypt_init;
    if (pdecrypt)
        *pdecrypt = pmeth->decrypt;
}

void EVP_PKEY_meth_get_derive(EVP_PKEY_METHOD *pmeth,
                              int (**pderive_init) (EVP_PKEY_CTX *ctx),
                              int (**pderive) (EVP_PKEY_CTX *ctx,
                                               unsigned char *key,
                                               size_t *keylen))
{
    if (pderive_init)
        *pderive_init = pmeth->derive_init;
    if (pderive)
        *pderive = pmeth->derive;
}

void EVP_PKEY_meth_get_ctrl(EVP_PKEY_METHOD *pmeth,
                            int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
                                           void *p2),
                            int (**pctrl_str) (EVP_PKEY_CTX *ctx,
                                               const char *type,
                                               const char *value))
{
    if (pctrl)
        *pctrl = pmeth->ctrl;
    if (pctrl_str)
        *pctrl_str = pmeth->ctrl_str;
}
Commit	Line	Data
0f113f3e	1	/*
62867571	2	* Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
0b6f3c66	3	*
62867571 RS	4	* Licensed under the OpenSSL license (the "License"). You may not use
	5	* this file except in compliance with the License. You can obtain a copy
	6	* in the file LICENSE in the source distribution or at
	7	* https://www.openssl.org/source/license.html
0b6f3c66 DSH	8	*/
	9
	10	#include <stdio.h>
	11	#include <stdlib.h>
b39fc560	12	#include "internal/cryptlib.h"
3c27208f	13	#include <openssl/engine.h>
33bed28b	14	#include <openssl/evp.h>
99119000	15	#include <openssl/x509v3.h>
5fe736e5	16	#include "internal/asn1_int.h"
27af42f9	17	#include "internal/evp_int.h"
99119000	18	#include "internal/numbers.h"
0b6f3c66	19
0f113f3e	20	typedef int sk_cmp_fn_type(const char const a, const char const b);
5ce278a7	21
df2ee0e2	22	static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
0b6f3c66	23
0f113f3e	24	static const EVP_PKEY_METHOD *standard_methods[] = {
d4f0339c	25	#ifndef OPENSSL_NO_RSA
0f113f3e	26	&rsa_pkey_meth,
d4f0339c DSH	27	#endif
d4f0339c DSH	28	#ifndef OPENSSL_NO_DH
0f113f3e	29	&dh_pkey_meth,
d4f0339c DSH	30	#endif
d4f0339c DSH	31	#ifndef OPENSSL_NO_DSA
0f113f3e	32	&dsa_pkey_meth,
d4f0339c	33	#endif
ef236ec3	34	#ifndef OPENSSL_NO_EC
0f113f3e	35	&ec_pkey_meth,
ef236ec3	36	#endif
0f113f3e	37	&hmac_pkey_meth,
b4a3aeeb	38	#ifndef OPENSSL_NO_CMAC
0f113f3e	39	&cmac_pkey_meth,
b4a3aeeb	40	#endif
afb14cda	41	#ifndef OPENSSL_NO_DH
1eff3485	42	&dhx_pkey_meth,
afb14cda	43	#endif
aacfb134 AG	44	&tls1_prf_pkey_meth,
aacfb134 AG	45	&hkdf_pkey_meth
0f113f3e	46	};
0b6f3c66	47
606f6c47	48	DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD , const EVP_PKEY_METHOD ,
0f113f3e	49	pmeth);
babb3798	50
0f113f3e MC	51	static int pmeth_cmp(const EVP_PKEY_METHOD const a,
	52	const EVP_PKEY_METHOD const b)
	53	{
	54	return ((a)->pkey_id - (b)->pkey_id);
	55	}
0b6f3c66	56
606f6c47	57	IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD , const EVP_PKEY_METHOD ,
0f113f3e	58	pmeth);
babb3798	59
c9777d26	60	const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
0f113f3e MC	61	{
	62	EVP_PKEY_METHOD tmp;
	63	const EVP_PKEY_METHOD t = &tmp, *ret;
	64	tmp.pkey_id = type;
	65	if (app_pkey_methods) {
	66	int idx;
	67	idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
	68	if (idx >= 0)
	69	return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
	70	}
	71	ret = OBJ_bsearch_pmeth(&t, standard_methods,
	72	sizeof(standard_methods) /
	73	sizeof(EVP_PKEY_METHOD *));
	74	if (!ret \|\| !*ret)
	75	return NULL;
	76	return *ret;
	77	}
0b6f3c66	78
f5cda4cb	79	static EVP_PKEY_CTX int_ctx_new(EVP_PKEY pkey, ENGINE *e, int id)
0f113f3e MC	80	{
	81	EVP_PKEY_CTX *ret;
	82	const EVP_PKEY_METHOD *pmeth;
	83	if (id == -1) {
	84	if (!pkey \|\| !pkey->ameth)
	85	return NULL;
	86	id = pkey->ameth->pkey_id;
	87	}
a63bf2c5	88	#ifndef OPENSSL_NO_ENGINE
0f113f3e MC	89	if (pkey && pkey->engine)
	90	e = pkey->engine;
	91	/* Try to find an ENGINE which implements this method */
	92	if (e) {
	93	if (!ENGINE_init(e)) {
	94	EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
	95	return NULL;
	96	}
	97	} else
	98	e = ENGINE_get_pkey_meth_engine(id);
	99
	100	/*
0d4fb843	101	* If an ENGINE handled this method look it up. Otherwise use internal
0f113f3e MC	102	* tables.
	103	*/
	104
	105	if (e)
	106	pmeth = ENGINE_get_pkey_meth(e, id);
	107	else
a63bf2c5	108	#endif
0f113f3e	109	pmeth = EVP_PKEY_meth_find(id);
c9777d26	110
0f113f3e MC	111	if (pmeth == NULL) {
	112	EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
	113	return NULL;
	114	}
c9777d26	115
64b25758	116	ret = OPENSSL_zalloc(sizeof(*ret));
90945fa3	117	if (ret == NULL) {
a63bf2c5	118	#ifndef OPENSSL_NO_ENGINE
7c96dbcd	119	ENGINE_finish(e);
a63bf2c5	120	#endif
0f113f3e MC	121	EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
	122	return NULL;
	123	}
	124	ret->engine = e;
	125	ret->pmeth = pmeth;
	126	ret->operation = EVP_PKEY_OP_UNDEFINED;
	127	ret->pkey = pkey;
0f113f3e	128	if (pkey)
03273d61	129	EVP_PKEY_up_ref(pkey);
0f113f3e MC	130
	131	if (pmeth->init) {
	132	if (pmeth->init(ret) <= 0) {
	133	EVP_PKEY_CTX_free(ret);
	134	return NULL;
	135	}
	136	}
	137
	138	return ret;
	139	}
	140
	141	EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
	142	{
	143	EVP_PKEY_METHOD *pmeth;
b4faea50	144
b51bce94	145	pmeth = OPENSSL_zalloc(sizeof(*pmeth));
90945fa3	146	if (pmeth == NULL)
0f113f3e MC	147	return NULL;
0f113f3e MC	148
0f113f3e MC	149	pmeth->pkey_id = id;
0f113f3e MC	150	pmeth->flags = flags \| EVP_PKEY_FLAG_DYNAMIC;
0f113f3e MC	151	return pmeth;
0f113f3e MC	152	}
ba30bad5	153
f830c68f	154	void EVP_PKEY_meth_get0_info(int ppkey_id, int pflags,
0f113f3e MC	155	const EVP_PKEY_METHOD *meth)
	156	{
	157	if (ppkey_id)
	158	*ppkey_id = meth->pkey_id;
	159	if (pflags)
	160	*pflags = meth->flags;
	161	}
f830c68f DSH	162
f830c68f DSH	163	void EVP_PKEY_meth_copy(EVP_PKEY_METHOD dst, const EVP_PKEY_METHOD src)
0f113f3e	164	{
f830c68f	165
0f113f3e MC	166	dst->init = src->init;
	167	dst->copy = src->copy;
	168	dst->cleanup = src->cleanup;
f830c68f	169
0f113f3e MC	170	dst->paramgen_init = src->paramgen_init;
0f113f3e MC	171	dst->paramgen = src->paramgen;
f830c68f	172
0f113f3e MC	173	dst->keygen_init = src->keygen_init;
0f113f3e MC	174	dst->keygen = src->keygen;
f830c68f	175
0f113f3e MC	176	dst->sign_init = src->sign_init;
0f113f3e MC	177	dst->sign = src->sign;
f830c68f	178
0f113f3e MC	179	dst->verify_init = src->verify_init;
0f113f3e MC	180	dst->verify = src->verify;
f830c68f	181
0f113f3e MC	182	dst->verify_recover_init = src->verify_recover_init;
0f113f3e MC	183	dst->verify_recover = src->verify_recover;
f830c68f	184
0f113f3e MC	185	dst->signctx_init = src->signctx_init;
0f113f3e MC	186	dst->signctx = src->signctx;
f830c68f	187
0f113f3e MC	188	dst->verifyctx_init = src->verifyctx_init;
0f113f3e MC	189	dst->verifyctx = src->verifyctx;
f830c68f	190
0f113f3e MC	191	dst->encrypt_init = src->encrypt_init;
0f113f3e MC	192	dst->encrypt = src->encrypt;
f830c68f	193
0f113f3e MC	194	dst->decrypt_init = src->decrypt_init;
0f113f3e MC	195	dst->decrypt = src->decrypt;
f830c68f	196
0f113f3e MC	197	dst->derive_init = src->derive_init;
0f113f3e MC	198	dst->derive = src->derive;
f830c68f	199
0f113f3e MC	200	dst->ctrl = src->ctrl;
	201	dst->ctrl_str = src->ctrl_str;
	202	}
f830c68f	203
ba30bad5	204	void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
0f113f3e MC	205	{
	206	if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
	207	OPENSSL_free(pmeth);
	208	}
ba30bad5	209
f5cda4cb	210	EVP_PKEY_CTX EVP_PKEY_CTX_new(EVP_PKEY pkey, ENGINE *e)
0f113f3e MC	211	{
	212	return int_ctx_new(pkey, e, -1);
	213	}
f5cda4cb DSH	214
f5cda4cb DSH	215	EVP_PKEY_CTX EVP_PKEY_CTX_new_id(int id, ENGINE e)
0f113f3e MC	216	{
	217	return int_ctx_new(NULL, e, id);
	218	}
f5cda4cb	219
8bdcef40	220	EVP_PKEY_CTX EVP_PKEY_CTX_dup(EVP_PKEY_CTX pctx)
0f113f3e MC	221	{
	222	EVP_PKEY_CTX *rctx;
	223	if (!pctx->pmeth \|\| !pctx->pmeth->copy)
	224	return NULL;
c9777d26	225	#ifndef OPENSSL_NO_ENGINE
0f113f3e MC	226	/* Make sure it's safe to copy a pkey context using an ENGINE */
	227	if (pctx->engine && !ENGINE_init(pctx->engine)) {
	228	EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
	229	return 0;
	230	}
c9777d26	231	#endif
b4faea50	232	rctx = OPENSSL_malloc(sizeof(*rctx));
90945fa3	233	if (rctx == NULL)
0f113f3e	234	return NULL;
8bdcef40	235
0f113f3e	236	rctx->pmeth = pctx->pmeth;
c9777d26	237	#ifndef OPENSSL_NO_ENGINE
0f113f3e	238	rctx->engine = pctx->engine;
c9777d26	239	#endif
8bdcef40	240
0f113f3e	241	if (pctx->pkey)
03273d61	242	EVP_PKEY_up_ref(pctx->pkey);
944f8580	243
0f113f3e	244	rctx->pkey = pctx->pkey;
8bdcef40	245
0f113f3e	246	if (pctx->peerkey)
03273d61	247	EVP_PKEY_up_ref(pctx->peerkey);
944f8580	248
0f113f3e	249	rctx->peerkey = pctx->peerkey;
8bdcef40	250
0f113f3e MC	251	rctx->data = NULL;
	252	rctx->app_data = NULL;
	253	rctx->operation = pctx->operation;
8bdcef40	254
0f113f3e MC	255	if (pctx->pmeth->copy(rctx, pctx) > 0)
0f113f3e MC	256	return rctx;
8bdcef40	257
0f113f3e MC	258	EVP_PKEY_CTX_free(rctx);
0f113f3e MC	259	return NULL;
8bdcef40	260
0f113f3e	261	}
8bdcef40	262
ba30bad5	263	int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
0f113f3e MC	264	{
	265	if (app_pkey_methods == NULL) {
	266	app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
90945fa3	267	if (app_pkey_methods == NULL)
0f113f3e MC	268	return 0;
	269	}
	270	if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth))
	271	return 0;
	272	sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
	273	return 1;
	274	}
ba30bad5	275
5da98aa6	276	void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
0f113f3e MC	277	{
	278	if (ctx == NULL)
	279	return;
	280	if (ctx->pmeth && ctx->pmeth->cleanup)
	281	ctx->pmeth->cleanup(ctx);
c5ba2d99 RS	282	EVP_PKEY_free(ctx->pkey);
c5ba2d99 RS	283	EVP_PKEY_free(ctx->peerkey);
c9777d26	284	#ifndef OPENSSL_NO_ENGINE
7c96dbcd	285	ENGINE_finish(ctx->engine);
c9777d26	286	#endif
0f113f3e MC	287	OPENSSL_free(ctx);
0f113f3e MC	288	}
5da98aa6	289
0b6f3c66	290	int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
0f113f3e MC	291	int cmd, int p1, void *p2)
	292	{
	293	int ret;
	294	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->ctrl) {
	295	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
	296	return -2;
	297	}
	298	if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
	299	return -1;
	300
	301	if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
	302	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
	303	return -1;
	304	}
	305
	306	if ((optype != -1) && !(ctx->operation & optype)) {
	307	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
	308	return -1;
	309	}
	310
	311	ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
	312
	313	if (ret == -2)
	314	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
	315
	316	return ret;
	317
	318	}
0b6f3c66	319
4a3dc3c0	320	int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
0f113f3e MC	321	const char name, const char value)
	322	{
	323	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->ctrl_str) {
	324	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
	325	return -2;
	326	}
86885c28	327	if (strcmp(name, "digest") == 0) {
0f113f3e	328	const EVP_MD *md;
75ebbd9a	329	if (value == NULL \|\| (md = EVP_get_digestbyname(value)) == NULL) {
0f113f3e MC	330	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_INVALID_DIGEST);
	331	return 0;
	332	}
	333	return EVP_PKEY_CTX_set_signature_md(ctx, md);
	334	}
	335	return ctx->pmeth->ctrl_str(ctx, name, value);
	336	}
f5cda4cb	337
99119000 DSH	338	/* Utility functions to send a string of hex string to a ctrl */
	339
	340	int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX ctx, int cmd, const char str)
	341	{
	342	size_t len;
	343
	344	len = strlen(str);
	345	if (len > INT_MAX)
	346	return -1;
	347	return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
	348	}
	349
	350	int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX ctx, int cmd, const char hex)
	351	{
	352	unsigned char *bin;
	353	long binlen;
	354	int rv = -1;
	355
14f051a0	356	bin = OPENSSL_hexstr2buf(hex, &binlen);
99119000 DSH	357	if (bin == NULL)
	358	return 0;
	359	if (binlen <= INT_MAX)
	360	rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
	361	OPENSSL_free(bin);
	362	return rv;
	363	}
	364
b28dea4e	365	int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
0f113f3e MC	366	{
	367	return ctx->operation;
	368	}
b28dea4e DSH	369
b28dea4e DSH	370	void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX ctx, int dat, int datlen)
0f113f3e MC	371	{
	372	ctx->keygen_info = dat;
	373	ctx->keygen_info_count = datlen;
	374	}
b28dea4e	375
f5cda4cb	376	void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX ctx, void data)
0f113f3e MC	377	{
	378	ctx->data = data;
	379	}
f5cda4cb DSH	380
f5cda4cb DSH	381	void EVP_PKEY_CTX_get_data(EVP_PKEY_CTX ctx)
0f113f3e MC	382	{
	383	return ctx->data;
	384	}
f5cda4cb	385
81cebb8b	386	EVP_PKEY EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX ctx)
0f113f3e MC	387	{
	388	return ctx->pkey;
	389	}
81cebb8b	390
0e1dba93	391	EVP_PKEY EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX ctx)
0f113f3e MC	392	{
	393	return ctx->peerkey;
	394	}
	395
f5cda4cb	396	void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX ctx, void data)
0f113f3e MC	397	{
	398	ctx->app_data = data;
	399	}
f5cda4cb DSH	400
f5cda4cb DSH	401	void EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX ctx)
0f113f3e MC	402	{
	403	return ctx->app_data;
	404	}
ba30bad5 DSH	405
ba30bad5 DSH	406	void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	407	int (init) (EVP_PKEY_CTX ctx))
	408	{
	409	pmeth->init = init;
	410	}
8bdcef40 DSH	411
8bdcef40 DSH	412	void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	413	int (copy) (EVP_PKEY_CTX dst,
	414	EVP_PKEY_CTX *src))
	415	{
	416	pmeth->copy = copy;
	417	}
ba30bad5 DSH	418
ba30bad5 DSH	419	void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	420	void (cleanup) (EVP_PKEY_CTX ctx))
	421	{
	422	pmeth->cleanup = cleanup;
	423	}
ba30bad5 DSH	424
ba30bad5 DSH	425	void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	426	int (paramgen_init) (EVP_PKEY_CTX ctx),
	427	int (paramgen) (EVP_PKEY_CTX ctx,
	428	EVP_PKEY *pkey))
	429	{
	430	pmeth->paramgen_init = paramgen_init;
	431	pmeth->paramgen = paramgen;
	432	}
ba30bad5 DSH	433
ba30bad5 DSH	434	void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	435	int (keygen_init) (EVP_PKEY_CTX ctx),
	436	int (keygen) (EVP_PKEY_CTX ctx,
	437	EVP_PKEY *pkey))
	438	{
	439	pmeth->keygen_init = keygen_init;
	440	pmeth->keygen = keygen;
	441	}
ba30bad5 DSH	442
ba30bad5 DSH	443	void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	444	int (sign_init) (EVP_PKEY_CTX ctx),
	445	int (sign) (EVP_PKEY_CTX ctx,
	446	unsigned char sig, size_t siglen,
	447	const unsigned char *tbs,
	448	size_t tbslen))
	449	{
	450	pmeth->sign_init = sign_init;
	451	pmeth->sign = sign;
	452	}
ba30bad5 DSH	453
ba30bad5 DSH	454	void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	455	int (verify_init) (EVP_PKEY_CTX ctx),
	456	int (verify) (EVP_PKEY_CTX ctx,
	457	const unsigned char *sig,
	458	size_t siglen,
	459	const unsigned char *tbs,
	460	size_t tbslen))
	461	{
	462	pmeth->verify_init = verify_init;
	463	pmeth->verify = verify;
	464	}
ba30bad5 DSH	465
ba30bad5 DSH	466	void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	467	int (*verify_recover_init) (EVP_PKEY_CTX
	468	*ctx),
	469	int (*verify_recover) (EVP_PKEY_CTX
	470	*ctx,
	471	unsigned char
	472	*sig,
	473	size_t *siglen,
	474	const unsigned
	475	char *tbs,
	476	size_t tbslen))
	477	{
	478	pmeth->verify_recover_init = verify_recover_init;
	479	pmeth->verify_recover = verify_recover;
	480	}
ba30bad5 DSH	481
ba30bad5 DSH	482	void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	483	int (signctx_init) (EVP_PKEY_CTX ctx,
	484	EVP_MD_CTX *mctx),
	485	int (signctx) (EVP_PKEY_CTX ctx,
	486	unsigned char *sig,
	487	size_t *siglen,
	488	EVP_MD_CTX *mctx))
	489	{
	490	pmeth->signctx_init = signctx_init;
	491	pmeth->signctx = signctx;
	492	}
ba30bad5 DSH	493
ba30bad5 DSH	494	void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	495	int (verifyctx_init) (EVP_PKEY_CTX ctx,
	496	EVP_MD_CTX *mctx),
	497	int (verifyctx) (EVP_PKEY_CTX ctx,
	498	const unsigned char *sig,
	499	int siglen,
	500	EVP_MD_CTX *mctx))
	501	{
	502	pmeth->verifyctx_init = verifyctx_init;
	503	pmeth->verifyctx = verifyctx;
	504	}
ba30bad5 DSH	505
ba30bad5 DSH	506	void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	507	int (encrypt_init) (EVP_PKEY_CTX ctx),
	508	int (encryptfn) (EVP_PKEY_CTX ctx,
	509	unsigned char *out,
	510	size_t *outlen,
	511	const unsigned char *in,
	512	size_t inlen))
	513	{
	514	pmeth->encrypt_init = encrypt_init;
	515	pmeth->encrypt = encryptfn;
	516	}
ba30bad5 DSH	517
ba30bad5 DSH	518	void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	519	int (decrypt_init) (EVP_PKEY_CTX ctx),
	520	int (decrypt) (EVP_PKEY_CTX ctx,
	521	unsigned char *out,
	522	size_t *outlen,
	523	const unsigned char *in,
	524	size_t inlen))
	525	{
	526	pmeth->decrypt_init = decrypt_init;
	527	pmeth->decrypt = decrypt;
	528	}
ba30bad5 DSH	529
ba30bad5 DSH	530	void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	531	int (derive_init) (EVP_PKEY_CTX ctx),
	532	int (derive) (EVP_PKEY_CTX ctx,
	533	unsigned char *key,
	534	size_t *keylen))
	535	{
	536	pmeth->derive_init = derive_init;
	537	pmeth->derive = derive;
	538	}
ba30bad5 DSH	539
ba30bad5 DSH	540	void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	541	int (ctrl) (EVP_PKEY_CTX ctx, int type, int p1,
	542	void *p2),
	543	int (ctrl_str) (EVP_PKEY_CTX ctx,
	544	const char *type,
	545	const char *value))
	546	{
	547	pmeth->ctrl = ctrl;
	548	pmeth->ctrl_str = ctrl_str;
	549	}
e7451ed1 DSH	550
	551	void EVP_PKEY_meth_get_init(EVP_PKEY_METHOD *pmeth,
	552	int (*pinit) (EVP_PKEY_CTX ctx))
	553	{
	554	*pinit = pmeth->init;
	555	}
	556
	557	void EVP_PKEY_meth_get_copy(EVP_PKEY_METHOD *pmeth,
	558	int (*pcopy) (EVP_PKEY_CTX dst,
	559	EVP_PKEY_CTX *src))
	560	{
	561	*pcopy = pmeth->copy;
	562	}
	563
	564	void EVP_PKEY_meth_get_cleanup(EVP_PKEY_METHOD *pmeth,
	565	void (*pcleanup) (EVP_PKEY_CTX ctx))
	566	{
	567	*pcleanup = pmeth->cleanup;
	568	}
	569
	570	void EVP_PKEY_meth_get_paramgen(EVP_PKEY_METHOD *pmeth,
	571	int (*pparamgen_init) (EVP_PKEY_CTX ctx),
	572	int (*pparamgen) (EVP_PKEY_CTX ctx,
	573	EVP_PKEY *pkey))
	574	{
	575	if (pparamgen_init)
	576	*pparamgen_init = pmeth->paramgen_init;
	577	if (pparamgen)
	578	*pparamgen = pmeth->paramgen;
	579	}
	580
	581	void EVP_PKEY_meth_get_keygen(EVP_PKEY_METHOD *pmeth,
	582	int (*pkeygen_init) (EVP_PKEY_CTX ctx),
	583	int (*pkeygen) (EVP_PKEY_CTX ctx,
	584	EVP_PKEY *pkey))
	585	{
	586	if (pkeygen_init)
	587	*pkeygen_init = pmeth->keygen_init;
	588	if (pkeygen)
	589	*pkeygen = pmeth->keygen;
	590	}
	591
	592	void EVP_PKEY_meth_get_sign(EVP_PKEY_METHOD *pmeth,
	593	int (*psign_init) (EVP_PKEY_CTX ctx),
	594	int (*psign) (EVP_PKEY_CTX ctx,
	595	unsigned char sig, size_t siglen,
	596	const unsigned char *tbs,
	597	size_t tbslen))
	598	{
	599	if (psign_init)
	600	*psign_init = pmeth->sign_init;
	601	if (psign)
	602	*psign = pmeth->sign;
	603	}
	604
	605	void EVP_PKEY_meth_get_verify(EVP_PKEY_METHOD *pmeth,
	606	int (*pverify_init) (EVP_PKEY_CTX ctx),
	607	int (*pverify) (EVP_PKEY_CTX ctx,
	608	const unsigned char *sig,
	609	size_t siglen,
	610	const unsigned char *tbs,
	611	size_t tbslen))
	612	{
	613	if (pverify_init)
614	*pverify_init = pmeth->verify_init;
615	if (pverify)
616	*pverify = pmeth->verify;
617	}
618
619	void EVP_PKEY_meth_get_verify_recover(EVP_PKEY_METHOD *pmeth,
620	int (**pverify_recover_init) (EVP_PKEY_CTX
621	*ctx),
622	int (**pverify_recover) (EVP_PKEY_CTX
623	*ctx,
624	unsigned char
625	*sig,
626	size_t *siglen,
627	const unsigned
628	char *tbs,
629	size_t tbslen))
630	{
631	if (pverify_recover_init)
632	*pverify_recover_init = pmeth->verify_recover_init;
633	if (pverify_recover)
634	*pverify_recover = pmeth->verify_recover;
635	}
636
637	void EVP_PKEY_meth_get_signctx(EVP_PKEY_METHOD *pmeth,
638	int (*psignctx_init) (EVP_PKEY_CTX ctx,
639	EVP_MD_CTX *mctx),
640	int (*psignctx) (EVP_PKEY_CTX ctx,
641	unsigned char *sig,
642	size_t *siglen,
643	EVP_MD_CTX *mctx))
644	{
645	if (psignctx_init)
646	*psignctx_init = pmeth->signctx_init;
647	if (psignctx)
648	*psignctx = pmeth->signctx;
649	}
650
651	void EVP_PKEY_meth_get_verifyctx(EVP_PKEY_METHOD *pmeth,
652	int (*pverifyctx_init) (EVP_PKEY_CTX ctx,
653	EVP_MD_CTX *mctx),
654	int (*pverifyctx) (EVP_PKEY_CTX ctx,
655	const unsigned char *sig,
656	int siglen,
657	EVP_MD_CTX *mctx))
658	{
659	if (pverifyctx_init)
660	*pverifyctx_init = pmeth->verifyctx_init;
661	if (pverifyctx)
662	*pverifyctx = pmeth->verifyctx;
663	}
664
665	void EVP_PKEY_meth_get_encrypt(EVP_PKEY_METHOD *pmeth,
666	int (*pencrypt_init) (EVP_PKEY_CTX ctx),
667	int (*pencryptfn) (EVP_PKEY_CTX ctx,
668	unsigned char *out,
669	size_t *outlen,
670	const unsigned char *in,
671	size_t inlen))
672	{
673	if (pencrypt_init)
674	*pencrypt_init = pmeth->encrypt_init;
675	if (pencryptfn)
676	*pencryptfn = pmeth->encrypt;
677	}
678
679	void EVP_PKEY_meth_get_decrypt(EVP_PKEY_METHOD *pmeth,
680	int (*pdecrypt_init) (EVP_PKEY_CTX ctx),
681	int (*pdecrypt) (EVP_PKEY_CTX ctx,
682	unsigned char *out,
683	size_t *outlen,
684	const unsigned char *in,
685	size_t inlen))
686	{
687	if (pdecrypt_init)
688	*pdecrypt_init = pmeth->decrypt_init;
689	if (pdecrypt)
690	*pdecrypt = pmeth->decrypt;
691	}
692
693	void EVP_PKEY_meth_get_derive(EVP_PKEY_METHOD *pmeth,
694	int (*pderive_init) (EVP_PKEY_CTX ctx),
695	int (*pderive) (EVP_PKEY_CTX ctx,
696	unsigned char *key,
697	size_t *keylen))
698	{
699	if (pderive_init)
700	*pderive_init = pmeth->derive_init;
701	if (pderive)
702	*pderive = pmeth->derive;
703	}
704
705	void EVP_PKEY_meth_get_ctrl(EVP_PKEY_METHOD *pmeth,
706	int (*pctrl) (EVP_PKEY_CTX ctx, int type, int p1,
707	void *p2),
708	int (*pctrl_str) (EVP_PKEY_CTX ctx,
709	const char *type,
710	const char *value))
711	{
712	if (pctrl)
713	*pctrl = pmeth->ctrl;
714	if (pctrl_str)
715	*pctrl_str = pmeth->ctrl_str;
716	}