[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_RSA
    &rsa_pss_pkey_meth,
#endif
#ifndef OPENSSL_NO_DH
    &dhx_pkey_meth,
#endif
    &tls1_prf_pkey_meth,
#ifndef OPENSSL_NO_EC
    &ecx25519_pkey_meth,
#endif
    &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
6577e008 DSH	41	#ifndef OPENSSL_NO_RSA
	42	&rsa_pss_pkey_meth,
	43	#endif
afb14cda	44	#ifndef OPENSSL_NO_DH
1eff3485	45	&dhx_pkey_meth,
afb14cda	46	#endif
aacfb134	47	&tls1_prf_pkey_meth,
262bd85f DSH	48	#ifndef OPENSSL_NO_EC
	49	&ecx25519_pkey_meth,
	50	#endif
aacfb134	51	&hkdf_pkey_meth
0f113f3e	52	};
0b6f3c66	53
606f6c47	54	DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD , const EVP_PKEY_METHOD ,
0f113f3e	55	pmeth);
babb3798	56
0f113f3e MC	57	static int pmeth_cmp(const EVP_PKEY_METHOD const a,
	58	const EVP_PKEY_METHOD const b)
	59	{
	60	return ((a)->pkey_id - (b)->pkey_id);
	61	}
0b6f3c66	62
606f6c47	63	IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD , const EVP_PKEY_METHOD ,
0f113f3e	64	pmeth);
babb3798	65
c9777d26	66	const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
0f113f3e MC	67	{
	68	EVP_PKEY_METHOD tmp;
	69	const EVP_PKEY_METHOD t = &tmp, *ret;
	70	tmp.pkey_id = type;
	71	if (app_pkey_methods) {
	72	int idx;
	73	idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
	74	if (idx >= 0)
	75	return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
	76	}
	77	ret = OBJ_bsearch_pmeth(&t, standard_methods,
	78	sizeof(standard_methods) /
	79	sizeof(EVP_PKEY_METHOD *));
	80	if (!ret \|\| !*ret)
	81	return NULL;
	82	return *ret;
	83	}
0b6f3c66	84
f5cda4cb	85	static EVP_PKEY_CTX int_ctx_new(EVP_PKEY pkey, ENGINE *e, int id)
0f113f3e MC	86	{
	87	EVP_PKEY_CTX *ret;
	88	const EVP_PKEY_METHOD *pmeth;
	89	if (id == -1) {
	90	if (!pkey \|\| !pkey->ameth)
	91	return NULL;
	92	id = pkey->ameth->pkey_id;
	93	}
a63bf2c5	94	#ifndef OPENSSL_NO_ENGINE
0f113f3e MC	95	if (pkey && pkey->engine)
	96	e = pkey->engine;
	97	/* Try to find an ENGINE which implements this method */
	98	if (e) {
	99	if (!ENGINE_init(e)) {
	100	EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
	101	return NULL;
	102	}
	103	} else
	104	e = ENGINE_get_pkey_meth_engine(id);
	105
	106	/*
0d4fb843	107	* If an ENGINE handled this method look it up. Otherwise use internal
0f113f3e MC	108	* tables.
	109	*/
	110
	111	if (e)
	112	pmeth = ENGINE_get_pkey_meth(e, id);
	113	else
a63bf2c5	114	#endif
0f113f3e	115	pmeth = EVP_PKEY_meth_find(id);
c9777d26	116
0f113f3e MC	117	if (pmeth == NULL) {
	118	EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
	119	return NULL;
	120	}
c9777d26	121
64b25758	122	ret = OPENSSL_zalloc(sizeof(*ret));
90945fa3	123	if (ret == NULL) {
a63bf2c5	124	#ifndef OPENSSL_NO_ENGINE
7c96dbcd	125	ENGINE_finish(e);
a63bf2c5	126	#endif
0f113f3e MC	127	EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
	128	return NULL;
	129	}
	130	ret->engine = e;
	131	ret->pmeth = pmeth;
	132	ret->operation = EVP_PKEY_OP_UNDEFINED;
	133	ret->pkey = pkey;
0f113f3e	134	if (pkey)
03273d61	135	EVP_PKEY_up_ref(pkey);
0f113f3e MC	136
	137	if (pmeth->init) {
	138	if (pmeth->init(ret) <= 0) {
	139	EVP_PKEY_CTX_free(ret);
	140	return NULL;
	141	}
	142	}
	143
	144	return ret;
	145	}
	146
	147	EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
	148	{
	149	EVP_PKEY_METHOD *pmeth;
b4faea50	150
b51bce94	151	pmeth = OPENSSL_zalloc(sizeof(*pmeth));
90945fa3	152	if (pmeth == NULL)
0f113f3e MC	153	return NULL;
0f113f3e MC	154
0f113f3e MC	155	pmeth->pkey_id = id;
0f113f3e MC	156	pmeth->flags = flags \| EVP_PKEY_FLAG_DYNAMIC;
0f113f3e MC	157	return pmeth;
0f113f3e MC	158	}
ba30bad5	159
f830c68f	160	void EVP_PKEY_meth_get0_info(int ppkey_id, int pflags,
0f113f3e MC	161	const EVP_PKEY_METHOD *meth)
	162	{
	163	if (ppkey_id)
	164	*ppkey_id = meth->pkey_id;
	165	if (pflags)
	166	*pflags = meth->flags;
	167	}
f830c68f DSH	168
f830c68f DSH	169	void EVP_PKEY_meth_copy(EVP_PKEY_METHOD dst, const EVP_PKEY_METHOD src)
0f113f3e	170	{
f830c68f	171
0f113f3e MC	172	dst->init = src->init;
	173	dst->copy = src->copy;
	174	dst->cleanup = src->cleanup;
f830c68f	175
0f113f3e MC	176	dst->paramgen_init = src->paramgen_init;
0f113f3e MC	177	dst->paramgen = src->paramgen;
f830c68f	178
0f113f3e MC	179	dst->keygen_init = src->keygen_init;
0f113f3e MC	180	dst->keygen = src->keygen;
f830c68f	181
0f113f3e MC	182	dst->sign_init = src->sign_init;
0f113f3e MC	183	dst->sign = src->sign;
f830c68f	184
0f113f3e MC	185	dst->verify_init = src->verify_init;
0f113f3e MC	186	dst->verify = src->verify;
f830c68f	187
0f113f3e MC	188	dst->verify_recover_init = src->verify_recover_init;
0f113f3e MC	189	dst->verify_recover = src->verify_recover;
f830c68f	190
0f113f3e MC	191	dst->signctx_init = src->signctx_init;
0f113f3e MC	192	dst->signctx = src->signctx;
f830c68f	193
0f113f3e MC	194	dst->verifyctx_init = src->verifyctx_init;
0f113f3e MC	195	dst->verifyctx = src->verifyctx;
f830c68f	196
0f113f3e MC	197	dst->encrypt_init = src->encrypt_init;
0f113f3e MC	198	dst->encrypt = src->encrypt;
f830c68f	199
0f113f3e MC	200	dst->decrypt_init = src->decrypt_init;
0f113f3e MC	201	dst->decrypt = src->decrypt;
f830c68f	202
0f113f3e MC	203	dst->derive_init = src->derive_init;
0f113f3e MC	204	dst->derive = src->derive;
f830c68f	205
0f113f3e MC	206	dst->ctrl = src->ctrl;
	207	dst->ctrl_str = src->ctrl_str;
	208	}
f830c68f	209
ba30bad5	210	void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
0f113f3e MC	211	{
	212	if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
	213	OPENSSL_free(pmeth);
	214	}
ba30bad5	215
f5cda4cb	216	EVP_PKEY_CTX EVP_PKEY_CTX_new(EVP_PKEY pkey, ENGINE *e)
0f113f3e MC	217	{
	218	return int_ctx_new(pkey, e, -1);
	219	}
f5cda4cb DSH	220
f5cda4cb DSH	221	EVP_PKEY_CTX EVP_PKEY_CTX_new_id(int id, ENGINE e)
0f113f3e MC	222	{
	223	return int_ctx_new(NULL, e, id);
	224	}
f5cda4cb	225
8bdcef40	226	EVP_PKEY_CTX EVP_PKEY_CTX_dup(EVP_PKEY_CTX pctx)
0f113f3e MC	227	{
	228	EVP_PKEY_CTX *rctx;
	229	if (!pctx->pmeth \|\| !pctx->pmeth->copy)
	230	return NULL;
c9777d26	231	#ifndef OPENSSL_NO_ENGINE
0f113f3e MC	232	/* Make sure it's safe to copy a pkey context using an ENGINE */
	233	if (pctx->engine && !ENGINE_init(pctx->engine)) {
	234	EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
	235	return 0;
	236	}
c9777d26	237	#endif
b4faea50	238	rctx = OPENSSL_malloc(sizeof(*rctx));
90945fa3	239	if (rctx == NULL)
0f113f3e	240	return NULL;
8bdcef40	241
0f113f3e	242	rctx->pmeth = pctx->pmeth;
c9777d26	243	#ifndef OPENSSL_NO_ENGINE
0f113f3e	244	rctx->engine = pctx->engine;
c9777d26	245	#endif
8bdcef40	246
0f113f3e	247	if (pctx->pkey)
03273d61	248	EVP_PKEY_up_ref(pctx->pkey);
944f8580	249
0f113f3e	250	rctx->pkey = pctx->pkey;
8bdcef40	251
0f113f3e	252	if (pctx->peerkey)
03273d61	253	EVP_PKEY_up_ref(pctx->peerkey);
944f8580	254
0f113f3e	255	rctx->peerkey = pctx->peerkey;
8bdcef40	256
0f113f3e MC	257	rctx->data = NULL;
	258	rctx->app_data = NULL;
	259	rctx->operation = pctx->operation;
8bdcef40	260
0f113f3e MC	261	if (pctx->pmeth->copy(rctx, pctx) > 0)
0f113f3e MC	262	return rctx;
8bdcef40	263
0f113f3e MC	264	EVP_PKEY_CTX_free(rctx);
0f113f3e MC	265	return NULL;
8bdcef40	266
0f113f3e	267	}
8bdcef40	268
ba30bad5	269	int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
0f113f3e MC	270	{
	271	if (app_pkey_methods == NULL) {
	272	app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
90945fa3	273	if (app_pkey_methods == NULL)
0f113f3e MC	274	return 0;
	275	}
	276	if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth))
	277	return 0;
	278	sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
	279	return 1;
	280	}
ba30bad5	281
5da98aa6	282	void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
0f113f3e MC	283	{
	284	if (ctx == NULL)
	285	return;
	286	if (ctx->pmeth && ctx->pmeth->cleanup)
	287	ctx->pmeth->cleanup(ctx);
c5ba2d99 RS	288	EVP_PKEY_free(ctx->pkey);
c5ba2d99 RS	289	EVP_PKEY_free(ctx->peerkey);
c9777d26	290	#ifndef OPENSSL_NO_ENGINE
7c96dbcd	291	ENGINE_finish(ctx->engine);
c9777d26	292	#endif
0f113f3e MC	293	OPENSSL_free(ctx);
0f113f3e MC	294	}
5da98aa6	295
0b6f3c66	296	int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
0f113f3e MC	297	int cmd, int p1, void *p2)
	298	{
	299	int ret;
	300	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->ctrl) {
	301	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
	302	return -2;
	303	}
	304	if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
	305	return -1;
	306
	307	if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
	308	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
	309	return -1;
	310	}
	311
	312	if ((optype != -1) && !(ctx->operation & optype)) {
	313	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
	314	return -1;
	315	}
	316
	317	ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
	318
	319	if (ret == -2)
	320	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
	321
	322	return ret;
	323
	324	}
0b6f3c66	325
4a3dc3c0	326	int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
0f113f3e MC	327	const char name, const char value)
	328	{
	329	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->ctrl_str) {
	330	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
	331	return -2;
	332	}
86885c28	333	if (strcmp(name, "digest") == 0) {
0f113f3e	334	const EVP_MD *md;
75ebbd9a	335	if (value == NULL \|\| (md = EVP_get_digestbyname(value)) == NULL) {
0f113f3e MC	336	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_INVALID_DIGEST);
	337	return 0;
	338	}
	339	return EVP_PKEY_CTX_set_signature_md(ctx, md);
	340	}
	341	return ctx->pmeth->ctrl_str(ctx, name, value);
	342	}
f5cda4cb	343
99119000 DSH	344	/* Utility functions to send a string of hex string to a ctrl */
	345
	346	int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX ctx, int cmd, const char str)
	347	{
	348	size_t len;
	349
	350	len = strlen(str);
	351	if (len > INT_MAX)
	352	return -1;
	353	return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
	354	}
	355
	356	int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX ctx, int cmd, const char hex)
	357	{
	358	unsigned char *bin;
	359	long binlen;
	360	int rv = -1;
	361
14f051a0	362	bin = OPENSSL_hexstr2buf(hex, &binlen);
99119000 DSH	363	if (bin == NULL)
	364	return 0;
	365	if (binlen <= INT_MAX)
	366	rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
	367	OPENSSL_free(bin);
	368	return rv;
	369	}
	370
b28dea4e	371	int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
0f113f3e MC	372	{
	373	return ctx->operation;
	374	}
b28dea4e DSH	375
b28dea4e DSH	376	void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX ctx, int dat, int datlen)
0f113f3e MC	377	{
	378	ctx->keygen_info = dat;
	379	ctx->keygen_info_count = datlen;
	380	}
b28dea4e	381
f5cda4cb	382	void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX ctx, void data)
0f113f3e MC	383	{
	384	ctx->data = data;
	385	}
f5cda4cb DSH	386
f5cda4cb DSH	387	void EVP_PKEY_CTX_get_data(EVP_PKEY_CTX ctx)
0f113f3e MC	388	{
	389	return ctx->data;
	390	}
f5cda4cb	391
81cebb8b	392	EVP_PKEY EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX ctx)
0f113f3e MC	393	{
	394	return ctx->pkey;
	395	}
81cebb8b	396
0e1dba93	397	EVP_PKEY EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX ctx)
0f113f3e MC	398	{
	399	return ctx->peerkey;
	400	}
	401
f5cda4cb	402	void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX ctx, void data)
0f113f3e MC	403	{
	404	ctx->app_data = data;
	405	}
f5cda4cb DSH	406
f5cda4cb DSH	407	void EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX ctx)
0f113f3e MC	408	{
	409	return ctx->app_data;
	410	}
ba30bad5 DSH	411
ba30bad5 DSH	412	void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	413	int (init) (EVP_PKEY_CTX ctx))
	414	{
	415	pmeth->init = init;
	416	}
8bdcef40 DSH	417
8bdcef40 DSH	418	void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	419	int (copy) (EVP_PKEY_CTX dst,
	420	EVP_PKEY_CTX *src))
	421	{
	422	pmeth->copy = copy;
	423	}
ba30bad5 DSH	424
ba30bad5 DSH	425	void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	426	void (cleanup) (EVP_PKEY_CTX ctx))
	427	{
	428	pmeth->cleanup = cleanup;
	429	}
ba30bad5 DSH	430
ba30bad5 DSH	431	void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	432	int (paramgen_init) (EVP_PKEY_CTX ctx),
	433	int (paramgen) (EVP_PKEY_CTX ctx,
	434	EVP_PKEY *pkey))
	435	{
	436	pmeth->paramgen_init = paramgen_init;
	437	pmeth->paramgen = paramgen;
	438	}
ba30bad5 DSH	439
ba30bad5 DSH	440	void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	441	int (keygen_init) (EVP_PKEY_CTX ctx),
	442	int (keygen) (EVP_PKEY_CTX ctx,
	443	EVP_PKEY *pkey))
	444	{
	445	pmeth->keygen_init = keygen_init;
	446	pmeth->keygen = keygen;
	447	}
ba30bad5 DSH	448
ba30bad5 DSH	449	void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	450	int (sign_init) (EVP_PKEY_CTX ctx),
	451	int (sign) (EVP_PKEY_CTX ctx,
	452	unsigned char sig, size_t siglen,
	453	const unsigned char *tbs,
	454	size_t tbslen))
	455	{
	456	pmeth->sign_init = sign_init;
	457	pmeth->sign = sign;
	458	}
ba30bad5 DSH	459
ba30bad5 DSH	460	void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	461	int (verify_init) (EVP_PKEY_CTX ctx),
	462	int (verify) (EVP_PKEY_CTX ctx,
	463	const unsigned char *sig,
	464	size_t siglen,
	465	const unsigned char *tbs,
	466	size_t tbslen))
	467	{
	468	pmeth->verify_init = verify_init;
	469	pmeth->verify = verify;
	470	}
ba30bad5 DSH	471
ba30bad5 DSH	472	void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	473	int (*verify_recover_init) (EVP_PKEY_CTX
	474	*ctx),
	475	int (*verify_recover) (EVP_PKEY_CTX
	476	*ctx,
	477	unsigned char
	478	*sig,
	479	size_t *siglen,
	480	const unsigned
	481	char *tbs,
	482	size_t tbslen))
	483	{
	484	pmeth->verify_recover_init = verify_recover_init;
	485	pmeth->verify_recover = verify_recover;
	486	}
ba30bad5 DSH	487
ba30bad5 DSH	488	void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	489	int (signctx_init) (EVP_PKEY_CTX ctx,
	490	EVP_MD_CTX *mctx),
	491	int (signctx) (EVP_PKEY_CTX ctx,
	492	unsigned char *sig,
	493	size_t *siglen,
	494	EVP_MD_CTX *mctx))
	495	{
	496	pmeth->signctx_init = signctx_init;
	497	pmeth->signctx = signctx;
	498	}
ba30bad5 DSH	499
ba30bad5 DSH	500	void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	501	int (verifyctx_init) (EVP_PKEY_CTX ctx,
	502	EVP_MD_CTX *mctx),
	503	int (verifyctx) (EVP_PKEY_CTX ctx,
	504	const unsigned char *sig,
	505	int siglen,
	506	EVP_MD_CTX *mctx))
	507	{
	508	pmeth->verifyctx_init = verifyctx_init;
	509	pmeth->verifyctx = verifyctx;
	510	}
ba30bad5 DSH	511
ba30bad5 DSH	512	void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	513	int (encrypt_init) (EVP_PKEY_CTX ctx),
	514	int (encryptfn) (EVP_PKEY_CTX ctx,
	515	unsigned char *out,
	516	size_t *outlen,
	517	const unsigned char *in,
	518	size_t inlen))
	519	{
	520	pmeth->encrypt_init = encrypt_init;
	521	pmeth->encrypt = encryptfn;
	522	}
ba30bad5 DSH	523
ba30bad5 DSH	524	void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	525	int (decrypt_init) (EVP_PKEY_CTX ctx),
	526	int (decrypt) (EVP_PKEY_CTX ctx,
	527	unsigned char *out,
	528	size_t *outlen,
	529	const unsigned char *in,
	530	size_t inlen))
	531	{
	532	pmeth->decrypt_init = decrypt_init;
	533	pmeth->decrypt = decrypt;
	534	}
ba30bad5 DSH	535
ba30bad5 DSH	536	void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	537	int (derive_init) (EVP_PKEY_CTX ctx),
	538	int (derive) (EVP_PKEY_CTX ctx,
	539	unsigned char *key,
	540	size_t *keylen))
	541	{
	542	pmeth->derive_init = derive_init;
	543	pmeth->derive = derive;
	544	}
ba30bad5 DSH	545
ba30bad5 DSH	546	void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	547	int (ctrl) (EVP_PKEY_CTX ctx, int type, int p1,
	548	void *p2),
	549	int (ctrl_str) (EVP_PKEY_CTX ctx,
	550	const char *type,
	551	const char *value))
	552	{
	553	pmeth->ctrl = ctrl;
	554	pmeth->ctrl_str = ctrl_str;
	555	}
e7451ed1 DSH	556
	557	void EVP_PKEY_meth_get_init(EVP_PKEY_METHOD *pmeth,
	558	int (*pinit) (EVP_PKEY_CTX ctx))
	559	{
	560	*pinit = pmeth->init;
	561	}
	562
	563	void EVP_PKEY_meth_get_copy(EVP_PKEY_METHOD *pmeth,
	564	int (*pcopy) (EVP_PKEY_CTX dst,
	565	EVP_PKEY_CTX *src))
	566	{
	567	*pcopy = pmeth->copy;
	568	}
	569
	570	void EVP_PKEY_meth_get_cleanup(EVP_PKEY_METHOD *pmeth,
	571	void (*pcleanup) (EVP_PKEY_CTX ctx))
	572	{
	573	*pcleanup = pmeth->cleanup;
	574	}
	575
	576	void EVP_PKEY_meth_get_paramgen(EVP_PKEY_METHOD *pmeth,
	577	int (*pparamgen_init) (EVP_PKEY_CTX ctx),
	578	int (*pparamgen) (EVP_PKEY_CTX ctx,
	579	EVP_PKEY *pkey))
	580	{
	581	if (pparamgen_init)
	582	*pparamgen_init = pmeth->paramgen_init;
	583	if (pparamgen)
	584	*pparamgen = pmeth->paramgen;
	585	}
	586
	587	void EVP_PKEY_meth_get_keygen(EVP_PKEY_METHOD *pmeth,
	588	int (*pkeygen_init) (EVP_PKEY_CTX ctx),
	589	int (*pkeygen) (EVP_PKEY_CTX ctx,
	590	EVP_PKEY *pkey))
	591	{
	592	if (pkeygen_init)
	593	*pkeygen_init = pmeth->keygen_init;
	594	if (pkeygen)
	595	*pkeygen = pmeth->keygen;
	596	}
	597
	598	void EVP_PKEY_meth_get_sign(EVP_PKEY_METHOD *pmeth,
	599	int (*psign_init) (EVP_PKEY_CTX ctx),
	600	int (*psign) (EVP_PKEY_CTX ctx,
	601	unsigned char sig, size_t siglen,
	602	const unsigned char *tbs,
	603	size_t tbslen))
	604	{
	605	if (psign_init)
	606	*psign_init = pmeth->sign_init;
	607	if (psign)
	608	*psign = pmeth->sign;
	609	}
	610
	611	void EVP_PKEY_meth_get_verify(EVP_PKEY_METHOD *pmeth,
	612	int (*pverify_init) (EVP_PKEY_CTX ctx),
	613	int (*pverify) (EVP_PKEY_CTX ctx,
	614	const unsigned char *sig,
	615	size_t siglen,
	616	const unsigned char *tbs,
	617	size_t tbslen))
	618	{
	619	if (pverify_init)
620	*pverify_init = pmeth->verify_init;
621	if (pverify)
622	*pverify = pmeth->verify;
623	}
624
625	void EVP_PKEY_meth_get_verify_recover(EVP_PKEY_METHOD *pmeth,
626	int (**pverify_recover_init) (EVP_PKEY_CTX
627	*ctx),
628	int (**pverify_recover) (EVP_PKEY_CTX
629	*ctx,
630	unsigned char
631	*sig,
632	size_t *siglen,
633	const unsigned
634	char *tbs,
635	size_t tbslen))
636	{
637	if (pverify_recover_init)
638	*pverify_recover_init = pmeth->verify_recover_init;
639	if (pverify_recover)
640	*pverify_recover = pmeth->verify_recover;
641	}
642
643	void EVP_PKEY_meth_get_signctx(EVP_PKEY_METHOD *pmeth,
644	int (*psignctx_init) (EVP_PKEY_CTX ctx,
645	EVP_MD_CTX *mctx),
646	int (*psignctx) (EVP_PKEY_CTX ctx,
647	unsigned char *sig,
648	size_t *siglen,
649	EVP_MD_CTX *mctx))
650	{
651	if (psignctx_init)
652	*psignctx_init = pmeth->signctx_init;
653	if (psignctx)
654	*psignctx = pmeth->signctx;
655	}
656
657	void EVP_PKEY_meth_get_verifyctx(EVP_PKEY_METHOD *pmeth,
658	int (*pverifyctx_init) (EVP_PKEY_CTX ctx,
659	EVP_MD_CTX *mctx),
660	int (*pverifyctx) (EVP_PKEY_CTX ctx,
661	const unsigned char *sig,
662	int siglen,
663	EVP_MD_CTX *mctx))
664	{
665	if (pverifyctx_init)
666	*pverifyctx_init = pmeth->verifyctx_init;
667	if (pverifyctx)
668	*pverifyctx = pmeth->verifyctx;
669	}
670
671	void EVP_PKEY_meth_get_encrypt(EVP_PKEY_METHOD *pmeth,
672	int (*pencrypt_init) (EVP_PKEY_CTX ctx),
673	int (*pencryptfn) (EVP_PKEY_CTX ctx,
674	unsigned char *out,
675	size_t *outlen,
676	const unsigned char *in,
677	size_t inlen))
678	{
679	if (pencrypt_init)
680	*pencrypt_init = pmeth->encrypt_init;
681	if (pencryptfn)
682	*pencryptfn = pmeth->encrypt;
683	}
684
685	void EVP_PKEY_meth_get_decrypt(EVP_PKEY_METHOD *pmeth,
686	int (*pdecrypt_init) (EVP_PKEY_CTX ctx),
687	int (*pdecrypt) (EVP_PKEY_CTX ctx,
688	unsigned char *out,
689	size_t *outlen,
690	const unsigned char *in,
691	size_t inlen))
692	{
693	if (pdecrypt_init)
694	*pdecrypt_init = pmeth->decrypt_init;
695	if (pdecrypt)
696	*pdecrypt = pmeth->decrypt;
697	}
698
699	void EVP_PKEY_meth_get_derive(EVP_PKEY_METHOD *pmeth,
700	int (*pderive_init) (EVP_PKEY_CTX ctx),
701	int (*pderive) (EVP_PKEY_CTX ctx,
702	unsigned char *key,
703	size_t *keylen))
704	{
705	if (pderive_init)
706	*pderive_init = pmeth->derive_init;
707	if (pderive)
708	*pderive = pmeth->derive;
709	}
710
711	void EVP_PKEY_meth_get_ctrl(EVP_PKEY_METHOD *pmeth,
712	int (*pctrl) (EVP_PKEY_CTX ctx, int type, int p1,
713	void *p2),
714	int (*pctrl_str) (EVP_PKEY_CTX ctx,
715	const char *type,
716	const char *value))
717	{
718	if (pctrl)
719	*pctrl = pmeth->ctrl;
720	if (pctrl_str)
721	*pctrl_str = pmeth->ctrl_str;
722	}