[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,
#ifndef OPENSSL_NO_POLY1305
    &poly1305_pkey_meth,
#endif
};

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)
        return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
                               value);
    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;
}

/* Pass a message digest to a ctrl */
int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
{
    const EVP_MD *m;

    if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
        EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
        return 0;
    }
    return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
}

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
52ad5b60 TS	51	&hkdf_pkey_meth,
	52	#ifndef OPENSSL_NO_POLY1305
	53	&poly1305_pkey_meth,
	54	#endif
0f113f3e	55	};
0b6f3c66	56
606f6c47	57	DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD , const EVP_PKEY_METHOD ,
0f113f3e	58	pmeth);
babb3798	59
0f113f3e MC	60	static int pmeth_cmp(const EVP_PKEY_METHOD const a,
	61	const EVP_PKEY_METHOD const b)
	62	{
	63	return ((a)->pkey_id - (b)->pkey_id);
	64	}
0b6f3c66	65
606f6c47	66	IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD , const EVP_PKEY_METHOD ,
0f113f3e	67	pmeth);
babb3798	68
c9777d26	69	const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
0f113f3e MC	70	{
	71	EVP_PKEY_METHOD tmp;
	72	const EVP_PKEY_METHOD t = &tmp, *ret;
	73	tmp.pkey_id = type;
	74	if (app_pkey_methods) {
	75	int idx;
	76	idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
	77	if (idx >= 0)
	78	return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
	79	}
	80	ret = OBJ_bsearch_pmeth(&t, standard_methods,
	81	sizeof(standard_methods) /
	82	sizeof(EVP_PKEY_METHOD *));
	83	if (!ret \|\| !*ret)
	84	return NULL;
	85	return *ret;
	86	}
0b6f3c66	87
f5cda4cb	88	static EVP_PKEY_CTX int_ctx_new(EVP_PKEY pkey, ENGINE *e, int id)
0f113f3e MC	89	{
	90	EVP_PKEY_CTX *ret;
	91	const EVP_PKEY_METHOD *pmeth;
	92	if (id == -1) {
	93	if (!pkey \|\| !pkey->ameth)
	94	return NULL;
	95	id = pkey->ameth->pkey_id;
	96	}
a63bf2c5	97	#ifndef OPENSSL_NO_ENGINE
0f113f3e MC	98	if (pkey && pkey->engine)
	99	e = pkey->engine;
	100	/* Try to find an ENGINE which implements this method */
	101	if (e) {
	102	if (!ENGINE_init(e)) {
	103	EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
	104	return NULL;
	105	}
	106	} else
	107	e = ENGINE_get_pkey_meth_engine(id);
	108
	109	/*
0d4fb843	110	* If an ENGINE handled this method look it up. Otherwise use internal
0f113f3e MC	111	* tables.
	112	*/
	113
	114	if (e)
	115	pmeth = ENGINE_get_pkey_meth(e, id);
	116	else
a63bf2c5	117	#endif
0f113f3e	118	pmeth = EVP_PKEY_meth_find(id);
c9777d26	119
0f113f3e MC	120	if (pmeth == NULL) {
	121	EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
	122	return NULL;
	123	}
c9777d26	124
64b25758	125	ret = OPENSSL_zalloc(sizeof(*ret));
90945fa3	126	if (ret == NULL) {
a63bf2c5	127	#ifndef OPENSSL_NO_ENGINE
7c96dbcd	128	ENGINE_finish(e);
a63bf2c5	129	#endif
0f113f3e MC	130	EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
	131	return NULL;
	132	}
	133	ret->engine = e;
	134	ret->pmeth = pmeth;
	135	ret->operation = EVP_PKEY_OP_UNDEFINED;
	136	ret->pkey = pkey;
0f113f3e	137	if (pkey)
03273d61	138	EVP_PKEY_up_ref(pkey);
0f113f3e MC	139
	140	if (pmeth->init) {
	141	if (pmeth->init(ret) <= 0) {
	142	EVP_PKEY_CTX_free(ret);
	143	return NULL;
	144	}
	145	}
	146
	147	return ret;
	148	}
	149
	150	EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
	151	{
	152	EVP_PKEY_METHOD *pmeth;
b4faea50	153
b51bce94	154	pmeth = OPENSSL_zalloc(sizeof(*pmeth));
90945fa3	155	if (pmeth == NULL)
0f113f3e MC	156	return NULL;
0f113f3e MC	157
0f113f3e MC	158	pmeth->pkey_id = id;
0f113f3e MC	159	pmeth->flags = flags \| EVP_PKEY_FLAG_DYNAMIC;
0f113f3e MC	160	return pmeth;
0f113f3e MC	161	}
ba30bad5	162
f830c68f	163	void EVP_PKEY_meth_get0_info(int ppkey_id, int pflags,
0f113f3e MC	164	const EVP_PKEY_METHOD *meth)
	165	{
	166	if (ppkey_id)
	167	*ppkey_id = meth->pkey_id;
	168	if (pflags)
	169	*pflags = meth->flags;
	170	}
f830c68f DSH	171
f830c68f DSH	172	void EVP_PKEY_meth_copy(EVP_PKEY_METHOD dst, const EVP_PKEY_METHOD src)
0f113f3e	173	{
f830c68f	174
0f113f3e MC	175	dst->init = src->init;
	176	dst->copy = src->copy;
	177	dst->cleanup = src->cleanup;
f830c68f	178
0f113f3e MC	179	dst->paramgen_init = src->paramgen_init;
0f113f3e MC	180	dst->paramgen = src->paramgen;
f830c68f	181
0f113f3e MC	182	dst->keygen_init = src->keygen_init;
0f113f3e MC	183	dst->keygen = src->keygen;
f830c68f	184
0f113f3e MC	185	dst->sign_init = src->sign_init;
0f113f3e MC	186	dst->sign = src->sign;
f830c68f	187
0f113f3e MC	188	dst->verify_init = src->verify_init;
0f113f3e MC	189	dst->verify = src->verify;
f830c68f	190
0f113f3e MC	191	dst->verify_recover_init = src->verify_recover_init;
0f113f3e MC	192	dst->verify_recover = src->verify_recover;
f830c68f	193
0f113f3e MC	194	dst->signctx_init = src->signctx_init;
0f113f3e MC	195	dst->signctx = src->signctx;
f830c68f	196
0f113f3e MC	197	dst->verifyctx_init = src->verifyctx_init;
0f113f3e MC	198	dst->verifyctx = src->verifyctx;
f830c68f	199
0f113f3e MC	200	dst->encrypt_init = src->encrypt_init;
0f113f3e MC	201	dst->encrypt = src->encrypt;
f830c68f	202
0f113f3e MC	203	dst->decrypt_init = src->decrypt_init;
0f113f3e MC	204	dst->decrypt = src->decrypt;
f830c68f	205
0f113f3e MC	206	dst->derive_init = src->derive_init;
0f113f3e MC	207	dst->derive = src->derive;
f830c68f	208
0f113f3e MC	209	dst->ctrl = src->ctrl;
	210	dst->ctrl_str = src->ctrl_str;
	211	}
f830c68f	212
ba30bad5	213	void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
0f113f3e MC	214	{
	215	if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
	216	OPENSSL_free(pmeth);
	217	}
ba30bad5	218
f5cda4cb	219	EVP_PKEY_CTX EVP_PKEY_CTX_new(EVP_PKEY pkey, ENGINE *e)
0f113f3e MC	220	{
	221	return int_ctx_new(pkey, e, -1);
	222	}
f5cda4cb DSH	223
f5cda4cb DSH	224	EVP_PKEY_CTX EVP_PKEY_CTX_new_id(int id, ENGINE e)
0f113f3e MC	225	{
	226	return int_ctx_new(NULL, e, id);
	227	}
f5cda4cb	228
8bdcef40	229	EVP_PKEY_CTX EVP_PKEY_CTX_dup(EVP_PKEY_CTX pctx)
0f113f3e MC	230	{
	231	EVP_PKEY_CTX *rctx;
	232	if (!pctx->pmeth \|\| !pctx->pmeth->copy)
	233	return NULL;
c9777d26	234	#ifndef OPENSSL_NO_ENGINE
0f113f3e MC	235	/* Make sure it's safe to copy a pkey context using an ENGINE */
	236	if (pctx->engine && !ENGINE_init(pctx->engine)) {
	237	EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
	238	return 0;
	239	}
c9777d26	240	#endif
b4faea50	241	rctx = OPENSSL_malloc(sizeof(*rctx));
90945fa3	242	if (rctx == NULL)
0f113f3e	243	return NULL;
8bdcef40	244
0f113f3e	245	rctx->pmeth = pctx->pmeth;
c9777d26	246	#ifndef OPENSSL_NO_ENGINE
0f113f3e	247	rctx->engine = pctx->engine;
c9777d26	248	#endif
8bdcef40	249
0f113f3e	250	if (pctx->pkey)
03273d61	251	EVP_PKEY_up_ref(pctx->pkey);
944f8580	252
0f113f3e	253	rctx->pkey = pctx->pkey;
8bdcef40	254
0f113f3e	255	if (pctx->peerkey)
03273d61	256	EVP_PKEY_up_ref(pctx->peerkey);
944f8580	257
0f113f3e	258	rctx->peerkey = pctx->peerkey;
8bdcef40	259
0f113f3e MC	260	rctx->data = NULL;
	261	rctx->app_data = NULL;
	262	rctx->operation = pctx->operation;
8bdcef40	263
0f113f3e MC	264	if (pctx->pmeth->copy(rctx, pctx) > 0)
0f113f3e MC	265	return rctx;
8bdcef40	266
0f113f3e MC	267	EVP_PKEY_CTX_free(rctx);
0f113f3e MC	268	return NULL;
8bdcef40	269
0f113f3e	270	}
8bdcef40	271
ba30bad5	272	int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
0f113f3e MC	273	{
	274	if (app_pkey_methods == NULL) {
	275	app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
90945fa3	276	if (app_pkey_methods == NULL)
0f113f3e MC	277	return 0;
	278	}
	279	if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth))
	280	return 0;
	281	sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
	282	return 1;
	283	}
ba30bad5	284
5da98aa6	285	void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
0f113f3e MC	286	{
	287	if (ctx == NULL)
	288	return;
	289	if (ctx->pmeth && ctx->pmeth->cleanup)
	290	ctx->pmeth->cleanup(ctx);
c5ba2d99 RS	291	EVP_PKEY_free(ctx->pkey);
c5ba2d99 RS	292	EVP_PKEY_free(ctx->peerkey);
c9777d26	293	#ifndef OPENSSL_NO_ENGINE
7c96dbcd	294	ENGINE_finish(ctx->engine);
c9777d26	295	#endif
0f113f3e MC	296	OPENSSL_free(ctx);
0f113f3e MC	297	}
5da98aa6	298
0b6f3c66	299	int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
0f113f3e MC	300	int cmd, int p1, void *p2)
	301	{
	302	int ret;
	303	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->ctrl) {
	304	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
	305	return -2;
	306	}
	307	if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
	308	return -1;
	309
	310	if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
	311	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
	312	return -1;
	313	}
	314
	315	if ((optype != -1) && !(ctx->operation & optype)) {
	316	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
	317	return -1;
	318	}
	319
	320	ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
	321
	322	if (ret == -2)
	323	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
	324
	325	return ret;
	326
	327	}
0b6f3c66	328
4a3dc3c0	329	int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
0f113f3e MC	330	const char name, const char value)
	331	{
	332	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->ctrl_str) {
	333	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
	334	return -2;
	335	}
410877ba DSH	336	if (strcmp(name, "digest") == 0)
	337	return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
	338	value);
0f113f3e MC	339	return ctx->pmeth->ctrl_str(ctx, name, value);
0f113f3e MC	340	}
f5cda4cb	341
99119000 DSH	342	/* Utility functions to send a string of hex string to a ctrl */
	343
	344	int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX ctx, int cmd, const char str)
	345	{
	346	size_t len;
	347
	348	len = strlen(str);
	349	if (len > INT_MAX)
	350	return -1;
	351	return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
	352	}
	353
	354	int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX ctx, int cmd, const char hex)
	355	{
	356	unsigned char *bin;
	357	long binlen;
	358	int rv = -1;
	359
14f051a0	360	bin = OPENSSL_hexstr2buf(hex, &binlen);
99119000 DSH	361	if (bin == NULL)
	362	return 0;
	363	if (binlen <= INT_MAX)
	364	rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
	365	OPENSSL_free(bin);
	366	return rv;
	367	}
52ad523c	368
410877ba DSH	369	/* Pass a message digest to a ctrl */
	370	int EVP_PKEY_CTX_md(EVP_PKEY_CTX ctx, int optype, int cmd, const char md)
	371	{
	372	const EVP_MD *m;
c82bafc5	373
410877ba DSH	374	if (md == NULL \|\| (m = EVP_get_digestbyname(md)) == NULL) {
	375	EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
	376	return 0;
	377	}
	378	return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
	379	}
99119000	380
b28dea4e	381	int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
0f113f3e MC	382	{
	383	return ctx->operation;
	384	}
b28dea4e DSH	385
b28dea4e DSH	386	void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX ctx, int dat, int datlen)
0f113f3e MC	387	{
	388	ctx->keygen_info = dat;
	389	ctx->keygen_info_count = datlen;
	390	}
b28dea4e	391
f5cda4cb	392	void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX ctx, void data)
0f113f3e MC	393	{
	394	ctx->data = data;
	395	}
f5cda4cb DSH	396
f5cda4cb DSH	397	void EVP_PKEY_CTX_get_data(EVP_PKEY_CTX ctx)
0f113f3e MC	398	{
	399	return ctx->data;
	400	}
f5cda4cb	401
81cebb8b	402	EVP_PKEY EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX ctx)
0f113f3e MC	403	{
	404	return ctx->pkey;
	405	}
81cebb8b	406
0e1dba93	407	EVP_PKEY EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX ctx)
0f113f3e MC	408	{
	409	return ctx->peerkey;
	410	}
	411
f5cda4cb	412	void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX ctx, void data)
0f113f3e MC	413	{
	414	ctx->app_data = data;
	415	}
f5cda4cb DSH	416
f5cda4cb DSH	417	void EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX ctx)
0f113f3e MC	418	{
	419	return ctx->app_data;
	420	}
ba30bad5 DSH	421
ba30bad5 DSH	422	void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	423	int (init) (EVP_PKEY_CTX ctx))
	424	{
	425	pmeth->init = init;
	426	}
8bdcef40 DSH	427
8bdcef40 DSH	428	void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	429	int (copy) (EVP_PKEY_CTX dst,
	430	EVP_PKEY_CTX *src))
	431	{
	432	pmeth->copy = copy;
	433	}
ba30bad5 DSH	434
ba30bad5 DSH	435	void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	436	void (cleanup) (EVP_PKEY_CTX ctx))
	437	{
	438	pmeth->cleanup = cleanup;
	439	}
ba30bad5 DSH	440
ba30bad5 DSH	441	void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	442	int (paramgen_init) (EVP_PKEY_CTX ctx),
	443	int (paramgen) (EVP_PKEY_CTX ctx,
	444	EVP_PKEY *pkey))
	445	{
	446	pmeth->paramgen_init = paramgen_init;
	447	pmeth->paramgen = paramgen;
	448	}
ba30bad5 DSH	449
ba30bad5 DSH	450	void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	451	int (keygen_init) (EVP_PKEY_CTX ctx),
	452	int (keygen) (EVP_PKEY_CTX ctx,
	453	EVP_PKEY *pkey))
	454	{
	455	pmeth->keygen_init = keygen_init;
	456	pmeth->keygen = keygen;
	457	}
ba30bad5 DSH	458
ba30bad5 DSH	459	void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	460	int (sign_init) (EVP_PKEY_CTX ctx),
	461	int (sign) (EVP_PKEY_CTX ctx,
	462	unsigned char sig, size_t siglen,
	463	const unsigned char *tbs,
	464	size_t tbslen))
	465	{
	466	pmeth->sign_init = sign_init;
	467	pmeth->sign = sign;
	468	}
ba30bad5 DSH	469
ba30bad5 DSH	470	void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	471	int (verify_init) (EVP_PKEY_CTX ctx),
	472	int (verify) (EVP_PKEY_CTX ctx,
	473	const unsigned char *sig,
	474	size_t siglen,
	475	const unsigned char *tbs,
	476	size_t tbslen))
	477	{
	478	pmeth->verify_init = verify_init;
	479	pmeth->verify = verify;
	480	}
ba30bad5 DSH	481
ba30bad5 DSH	482	void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	483	int (*verify_recover_init) (EVP_PKEY_CTX
	484	*ctx),
	485	int (*verify_recover) (EVP_PKEY_CTX
	486	*ctx,
	487	unsigned char
	488	*sig,
	489	size_t *siglen,
	490	const unsigned
	491	char *tbs,
	492	size_t tbslen))
	493	{
	494	pmeth->verify_recover_init = verify_recover_init;
	495	pmeth->verify_recover = verify_recover;
	496	}
ba30bad5 DSH	497
ba30bad5 DSH	498	void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	499	int (signctx_init) (EVP_PKEY_CTX ctx,
	500	EVP_MD_CTX *mctx),
	501	int (signctx) (EVP_PKEY_CTX ctx,
	502	unsigned char *sig,
	503	size_t *siglen,
	504	EVP_MD_CTX *mctx))
	505	{
	506	pmeth->signctx_init = signctx_init;
	507	pmeth->signctx = signctx;
	508	}
ba30bad5 DSH	509
ba30bad5 DSH	510	void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	511	int (verifyctx_init) (EVP_PKEY_CTX ctx,
	512	EVP_MD_CTX *mctx),
	513	int (verifyctx) (EVP_PKEY_CTX ctx,
	514	const unsigned char *sig,
	515	int siglen,
	516	EVP_MD_CTX *mctx))
	517	{
	518	pmeth->verifyctx_init = verifyctx_init;
	519	pmeth->verifyctx = verifyctx;
	520	}
ba30bad5 DSH	521
ba30bad5 DSH	522	void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	523	int (encrypt_init) (EVP_PKEY_CTX ctx),
	524	int (encryptfn) (EVP_PKEY_CTX ctx,
	525	unsigned char *out,
	526	size_t *outlen,
	527	const unsigned char *in,
	528	size_t inlen))
	529	{
	530	pmeth->encrypt_init = encrypt_init;
	531	pmeth->encrypt = encryptfn;
	532	}
ba30bad5 DSH	533
ba30bad5 DSH	534	void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	535	int (decrypt_init) (EVP_PKEY_CTX ctx),
	536	int (decrypt) (EVP_PKEY_CTX ctx,
	537	unsigned char *out,
	538	size_t *outlen,
	539	const unsigned char *in,
	540	size_t inlen))
	541	{
	542	pmeth->decrypt_init = decrypt_init;
	543	pmeth->decrypt = decrypt;
	544	}
ba30bad5 DSH	545
ba30bad5 DSH	546	void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	547	int (derive_init) (EVP_PKEY_CTX ctx),
	548	int (derive) (EVP_PKEY_CTX ctx,
	549	unsigned char *key,
	550	size_t *keylen))
	551	{
	552	pmeth->derive_init = derive_init;
	553	pmeth->derive = derive;
	554	}
ba30bad5 DSH	555
ba30bad5 DSH	556	void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	557	int (ctrl) (EVP_PKEY_CTX ctx, int type, int p1,
	558	void *p2),
	559	int (ctrl_str) (EVP_PKEY_CTX ctx,
	560	const char *type,
	561	const char *value))
	562	{
	563	pmeth->ctrl = ctrl;
	564	pmeth->ctrl_str = ctrl_str;
	565	}
e7451ed1 DSH	566
	567	void EVP_PKEY_meth_get_init(EVP_PKEY_METHOD *pmeth,
	568	int (*pinit) (EVP_PKEY_CTX ctx))
	569	{
	570	*pinit = pmeth->init;
	571	}
	572
	573	void EVP_PKEY_meth_get_copy(EVP_PKEY_METHOD *pmeth,
	574	int (*pcopy) (EVP_PKEY_CTX dst,
	575	EVP_PKEY_CTX *src))
	576	{
	577	*pcopy = pmeth->copy;
	578	}
	579
	580	void EVP_PKEY_meth_get_cleanup(EVP_PKEY_METHOD *pmeth,
	581	void (*pcleanup) (EVP_PKEY_CTX ctx))
	582	{
	583	*pcleanup = pmeth->cleanup;
	584	}
	585
	586	void EVP_PKEY_meth_get_paramgen(EVP_PKEY_METHOD *pmeth,
	587	int (*pparamgen_init) (EVP_PKEY_CTX ctx),
	588	int (*pparamgen) (EVP_PKEY_CTX ctx,
	589	EVP_PKEY *pkey))
	590	{
	591	if (pparamgen_init)
	592	*pparamgen_init = pmeth->paramgen_init;
	593	if (pparamgen)
	594	*pparamgen = pmeth->paramgen;
	595	}
	596
	597	void EVP_PKEY_meth_get_keygen(EVP_PKEY_METHOD *pmeth,
	598	int (*pkeygen_init) (EVP_PKEY_CTX ctx),
	599	int (*pkeygen) (EVP_PKEY_CTX ctx,
	600	EVP_PKEY *pkey))
	601	{
	602	if (pkeygen_init)
	603	*pkeygen_init = pmeth->keygen_init;
	604	if (pkeygen)
	605	*pkeygen = pmeth->keygen;
	606	}
	607
	608	void EVP_PKEY_meth_get_sign(EVP_PKEY_METHOD *pmeth,
	609	int (*psign_init) (EVP_PKEY_CTX ctx),
	610	int (*psign) (EVP_PKEY_CTX ctx,
	611	unsigned char sig, size_t siglen,
	612	const unsigned char *tbs,
	613	size_t tbslen))
	614	{
	615	if (psign_init)
	616	*psign_init = pmeth->sign_init;
	617	if (psign)
	618	*psign = pmeth->sign;
	619	}
	620
	621	void EVP_PKEY_meth_get_verify(EVP_PKEY_METHOD *pmeth,
	622	int (*pverify_init) (EVP_PKEY_CTX ctx),
	623	int (*pverify) (EVP_PKEY_CTX ctx,
	624	const unsigned char *sig,
	625	size_t siglen,
	626	const unsigned char *tbs,
	627	size_t tbslen))
	628	{
	629	if (pverify_init)
630	*pverify_init = pmeth->verify_init;
631	if (pverify)
632	*pverify = pmeth->verify;
633	}
634
635	void EVP_PKEY_meth_get_verify_recover(EVP_PKEY_METHOD *pmeth,
636	int (**pverify_recover_init) (EVP_PKEY_CTX
637	*ctx),
638	int (**pverify_recover) (EVP_PKEY_CTX
639	*ctx,
640	unsigned char
641	*sig,
642	size_t *siglen,
643	const unsigned
644	char *tbs,
645	size_t tbslen))
646	{
647	if (pverify_recover_init)
648	*pverify_recover_init = pmeth->verify_recover_init;
649	if (pverify_recover)
650	*pverify_recover = pmeth->verify_recover;
651	}
652
653	void EVP_PKEY_meth_get_signctx(EVP_PKEY_METHOD *pmeth,
654	int (*psignctx_init) (EVP_PKEY_CTX ctx,
655	EVP_MD_CTX *mctx),
656	int (*psignctx) (EVP_PKEY_CTX ctx,
657	unsigned char *sig,
658	size_t *siglen,
659	EVP_MD_CTX *mctx))
660	{
661	if (psignctx_init)
662	*psignctx_init = pmeth->signctx_init;
663	if (psignctx)
664	*psignctx = pmeth->signctx;
665	}
666
667	void EVP_PKEY_meth_get_verifyctx(EVP_PKEY_METHOD *pmeth,
668	int (*pverifyctx_init) (EVP_PKEY_CTX ctx,
669	EVP_MD_CTX *mctx),
670	int (*pverifyctx) (EVP_PKEY_CTX ctx,
671	const unsigned char *sig,
672	int siglen,
673	EVP_MD_CTX *mctx))
674	{
675	if (pverifyctx_init)
676	*pverifyctx_init = pmeth->verifyctx_init;
677	if (pverifyctx)
678	*pverifyctx = pmeth->verifyctx;
679	}
680
681	void EVP_PKEY_meth_get_encrypt(EVP_PKEY_METHOD *pmeth,
682	int (*pencrypt_init) (EVP_PKEY_CTX ctx),
683	int (*pencryptfn) (EVP_PKEY_CTX ctx,
684	unsigned char *out,
685	size_t *outlen,
686	const unsigned char *in,
687	size_t inlen))
688	{
689	if (pencrypt_init)
690	*pencrypt_init = pmeth->encrypt_init;
691	if (pencryptfn)
692	*pencryptfn = pmeth->encrypt;
693	}
694
695	void EVP_PKEY_meth_get_decrypt(EVP_PKEY_METHOD *pmeth,
696	int (*pdecrypt_init) (EVP_PKEY_CTX ctx),
697	int (*pdecrypt) (EVP_PKEY_CTX ctx,
698	unsigned char *out,
699	size_t *outlen,
700	const unsigned char *in,
701	size_t inlen))
702	{
703	if (pdecrypt_init)
704	*pdecrypt_init = pmeth->decrypt_init;
705	if (pdecrypt)
706	*pdecrypt = pmeth->decrypt;
707	}
708
709	void EVP_PKEY_meth_get_derive(EVP_PKEY_METHOD *pmeth,
710	int (*pderive_init) (EVP_PKEY_CTX ctx),
711	int (*pderive) (EVP_PKEY_CTX ctx,
712	unsigned char *key,
713	size_t *keylen))
714	{
715	if (pderive_init)
716	*pderive_init = pmeth->derive_init;
717	if (pderive)
718	*pderive = pmeth->derive;
719	}
720
721	void EVP_PKEY_meth_get_ctrl(EVP_PKEY_METHOD *pmeth,
722	int (*pctrl) (EVP_PKEY_CTX ctx, int type, int p1,
723	void *p2),
724	int (*pctrl_str) (EVP_PKEY_CTX ctx,
725	const char *type,
726	const char *value))
727	{
728	if (pctrl)
729	*pctrl = pmeth->ctrl;
730	if (pctrl_str)
731	*pctrl_str = pmeth->ctrl_str;
732	}