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

/*
 * Copyright 2006-2017 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
#ifndef OPENSSL_NO_SIPHASH
    &siphash_pkey_meth,
#endif
#ifndef OPENSSL_NO_EC
    &ed25519_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) {
            ret->pmeth = NULL;
            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;

    rctx->pmeth = NULL;
    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	/*
3f5616d7	2	* Copyright 2006-2017 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
3f5616d7 TS	55	#ifndef OPENSSL_NO_SIPHASH
	56	&siphash_pkey_meth,
	57	#endif
42a3008a DSH	58	#ifndef OPENSSL_NO_EC
	59	&ed25519_pkey_meth,
	60	#endif
0f113f3e	61	};
0b6f3c66	62
606f6c47	63	DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD , const EVP_PKEY_METHOD ,
0f113f3e	64	pmeth);
babb3798	65
0f113f3e MC	66	static int pmeth_cmp(const EVP_PKEY_METHOD const a,
	67	const EVP_PKEY_METHOD const b)
	68	{
	69	return ((a)->pkey_id - (b)->pkey_id);
	70	}
0b6f3c66	71
606f6c47	72	IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD , const EVP_PKEY_METHOD ,
0f113f3e	73	pmeth);
babb3798	74
c9777d26	75	const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
0f113f3e MC	76	{
	77	EVP_PKEY_METHOD tmp;
	78	const EVP_PKEY_METHOD t = &tmp, *ret;
	79	tmp.pkey_id = type;
	80	if (app_pkey_methods) {
	81	int idx;
	82	idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
	83	if (idx >= 0)
	84	return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
	85	}
	86	ret = OBJ_bsearch_pmeth(&t, standard_methods,
	87	sizeof(standard_methods) /
	88	sizeof(EVP_PKEY_METHOD *));
	89	if (!ret \|\| !*ret)
	90	return NULL;
	91	return *ret;
	92	}
0b6f3c66	93
f5cda4cb	94	static EVP_PKEY_CTX int_ctx_new(EVP_PKEY pkey, ENGINE *e, int id)
0f113f3e MC	95	{
	96	EVP_PKEY_CTX *ret;
	97	const EVP_PKEY_METHOD *pmeth;
	98	if (id == -1) {
	99	if (!pkey \|\| !pkey->ameth)
	100	return NULL;
	101	id = pkey->ameth->pkey_id;
	102	}
a63bf2c5	103	#ifndef OPENSSL_NO_ENGINE
0f113f3e MC	104	if (pkey && pkey->engine)
	105	e = pkey->engine;
	106	/* Try to find an ENGINE which implements this method */
	107	if (e) {
	108	if (!ENGINE_init(e)) {
	109	EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
	110	return NULL;
	111	}
	112	} else
	113	e = ENGINE_get_pkey_meth_engine(id);
	114
	115	/*
0d4fb843	116	* If an ENGINE handled this method look it up. Otherwise use internal
0f113f3e MC	117	* tables.
	118	*/
	119
	120	if (e)
	121	pmeth = ENGINE_get_pkey_meth(e, id);
	122	else
a63bf2c5	123	#endif
0f113f3e	124	pmeth = EVP_PKEY_meth_find(id);
c9777d26	125
0f113f3e MC	126	if (pmeth == NULL) {
	127	EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
	128	return NULL;
	129	}
c9777d26	130
64b25758	131	ret = OPENSSL_zalloc(sizeof(*ret));
90945fa3	132	if (ret == NULL) {
a63bf2c5	133	#ifndef OPENSSL_NO_ENGINE
7c96dbcd	134	ENGINE_finish(e);
a63bf2c5	135	#endif
0f113f3e MC	136	EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
	137	return NULL;
	138	}
	139	ret->engine = e;
	140	ret->pmeth = pmeth;
	141	ret->operation = EVP_PKEY_OP_UNDEFINED;
	142	ret->pkey = pkey;
0f113f3e	143	if (pkey)
03273d61	144	EVP_PKEY_up_ref(pkey);
0f113f3e MC	145
	146	if (pmeth->init) {
	147	if (pmeth->init(ret) <= 0) {
83b4049a	148	ret->pmeth = NULL;
0f113f3e MC	149	EVP_PKEY_CTX_free(ret);
	150	return NULL;
	151	}
	152	}
	153
	154	return ret;
	155	}
	156
	157	EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
	158	{
	159	EVP_PKEY_METHOD *pmeth;
b4faea50	160
b51bce94	161	pmeth = OPENSSL_zalloc(sizeof(*pmeth));
90945fa3	162	if (pmeth == NULL)
0f113f3e MC	163	return NULL;
0f113f3e MC	164
0f113f3e MC	165	pmeth->pkey_id = id;
0f113f3e MC	166	pmeth->flags = flags \| EVP_PKEY_FLAG_DYNAMIC;
0f113f3e MC	167	return pmeth;
0f113f3e MC	168	}
ba30bad5	169
f830c68f	170	void EVP_PKEY_meth_get0_info(int ppkey_id, int pflags,
0f113f3e MC	171	const EVP_PKEY_METHOD *meth)
	172	{
	173	if (ppkey_id)
	174	*ppkey_id = meth->pkey_id;
	175	if (pflags)
	176	*pflags = meth->flags;
	177	}
f830c68f DSH	178
f830c68f DSH	179	void EVP_PKEY_meth_copy(EVP_PKEY_METHOD dst, const EVP_PKEY_METHOD src)
0f113f3e	180	{
f830c68f	181
0f113f3e MC	182	dst->init = src->init;
	183	dst->copy = src->copy;
	184	dst->cleanup = src->cleanup;
f830c68f	185
0f113f3e MC	186	dst->paramgen_init = src->paramgen_init;
0f113f3e MC	187	dst->paramgen = src->paramgen;
f830c68f	188
0f113f3e MC	189	dst->keygen_init = src->keygen_init;
0f113f3e MC	190	dst->keygen = src->keygen;
f830c68f	191
0f113f3e MC	192	dst->sign_init = src->sign_init;
0f113f3e MC	193	dst->sign = src->sign;
f830c68f	194
0f113f3e MC	195	dst->verify_init = src->verify_init;
0f113f3e MC	196	dst->verify = src->verify;
f830c68f	197
0f113f3e MC	198	dst->verify_recover_init = src->verify_recover_init;
0f113f3e MC	199	dst->verify_recover = src->verify_recover;
f830c68f	200
0f113f3e MC	201	dst->signctx_init = src->signctx_init;
0f113f3e MC	202	dst->signctx = src->signctx;
f830c68f	203
0f113f3e MC	204	dst->verifyctx_init = src->verifyctx_init;
0f113f3e MC	205	dst->verifyctx = src->verifyctx;
f830c68f	206
0f113f3e MC	207	dst->encrypt_init = src->encrypt_init;
0f113f3e MC	208	dst->encrypt = src->encrypt;
f830c68f	209
0f113f3e MC	210	dst->decrypt_init = src->decrypt_init;
0f113f3e MC	211	dst->decrypt = src->decrypt;
f830c68f	212
0f113f3e MC	213	dst->derive_init = src->derive_init;
0f113f3e MC	214	dst->derive = src->derive;
f830c68f	215
0f113f3e MC	216	dst->ctrl = src->ctrl;
	217	dst->ctrl_str = src->ctrl_str;
	218	}
f830c68f	219
ba30bad5	220	void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
0f113f3e MC	221	{
	222	if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
	223	OPENSSL_free(pmeth);
	224	}
ba30bad5	225
f5cda4cb	226	EVP_PKEY_CTX EVP_PKEY_CTX_new(EVP_PKEY pkey, ENGINE *e)
0f113f3e MC	227	{
	228	return int_ctx_new(pkey, e, -1);
	229	}
f5cda4cb DSH	230
f5cda4cb DSH	231	EVP_PKEY_CTX EVP_PKEY_CTX_new_id(int id, ENGINE e)
0f113f3e MC	232	{
	233	return int_ctx_new(NULL, e, id);
	234	}
f5cda4cb	235
8bdcef40	236	EVP_PKEY_CTX EVP_PKEY_CTX_dup(EVP_PKEY_CTX pctx)
0f113f3e MC	237	{
	238	EVP_PKEY_CTX *rctx;
	239	if (!pctx->pmeth \|\| !pctx->pmeth->copy)
	240	return NULL;
c9777d26	241	#ifndef OPENSSL_NO_ENGINE
0f113f3e MC	242	/* Make sure it's safe to copy a pkey context using an ENGINE */
	243	if (pctx->engine && !ENGINE_init(pctx->engine)) {
	244	EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
	245	return 0;
	246	}
c9777d26	247	#endif
b4faea50	248	rctx = OPENSSL_malloc(sizeof(*rctx));
90945fa3	249	if (rctx == NULL)
0f113f3e	250	return NULL;
8bdcef40	251
0f113f3e	252	rctx->pmeth = pctx->pmeth;
c9777d26	253	#ifndef OPENSSL_NO_ENGINE
0f113f3e	254	rctx->engine = pctx->engine;
c9777d26	255	#endif
8bdcef40	256
0f113f3e	257	if (pctx->pkey)
03273d61	258	EVP_PKEY_up_ref(pctx->pkey);
944f8580	259
0f113f3e	260	rctx->pkey = pctx->pkey;
8bdcef40	261
0f113f3e	262	if (pctx->peerkey)
03273d61	263	EVP_PKEY_up_ref(pctx->peerkey);
944f8580	264
0f113f3e	265	rctx->peerkey = pctx->peerkey;
8bdcef40	266
0f113f3e MC	267	rctx->data = NULL;
	268	rctx->app_data = NULL;
	269	rctx->operation = pctx->operation;
8bdcef40	270
0f113f3e MC	271	if (pctx->pmeth->copy(rctx, pctx) > 0)
0f113f3e MC	272	return rctx;
8bdcef40	273
83b4049a	274	rctx->pmeth = NULL;
0f113f3e MC	275	EVP_PKEY_CTX_free(rctx);
0f113f3e MC	276	return NULL;
8bdcef40	277
0f113f3e	278	}
8bdcef40	279
ba30bad5	280	int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
0f113f3e MC	281	{
	282	if (app_pkey_methods == NULL) {
	283	app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
90945fa3	284	if (app_pkey_methods == NULL)
0f113f3e MC	285	return 0;
	286	}
	287	if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth))
	288	return 0;
	289	sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
	290	return 1;
	291	}
ba30bad5	292
5da98aa6	293	void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
0f113f3e MC	294	{
	295	if (ctx == NULL)
	296	return;
	297	if (ctx->pmeth && ctx->pmeth->cleanup)
	298	ctx->pmeth->cleanup(ctx);
c5ba2d99 RS	299	EVP_PKEY_free(ctx->pkey);
c5ba2d99 RS	300	EVP_PKEY_free(ctx->peerkey);
c9777d26	301	#ifndef OPENSSL_NO_ENGINE
7c96dbcd	302	ENGINE_finish(ctx->engine);
c9777d26	303	#endif
0f113f3e MC	304	OPENSSL_free(ctx);
0f113f3e MC	305	}
5da98aa6	306
0b6f3c66	307	int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
0f113f3e MC	308	int cmd, int p1, void *p2)
	309	{
	310	int ret;
	311	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->ctrl) {
	312	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
	313	return -2;
	314	}
	315	if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
	316	return -1;
	317
	318	if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
	319	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
	320	return -1;
	321	}
	322
	323	if ((optype != -1) && !(ctx->operation & optype)) {
	324	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
	325	return -1;
	326	}
	327
	328	ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
	329
	330	if (ret == -2)
	331	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
	332
	333	return ret;
	334
	335	}
0b6f3c66	336
4a3dc3c0	337	int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
0f113f3e MC	338	const char name, const char value)
	339	{
	340	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->ctrl_str) {
	341	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
	342	return -2;
	343	}
410877ba DSH	344	if (strcmp(name, "digest") == 0)
	345	return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
	346	value);
0f113f3e MC	347	return ctx->pmeth->ctrl_str(ctx, name, value);
0f113f3e MC	348	}
f5cda4cb	349
99119000 DSH	350	/* Utility functions to send a string of hex string to a ctrl */
	351
	352	int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX ctx, int cmd, const char str)
	353	{
	354	size_t len;
	355
	356	len = strlen(str);
	357	if (len > INT_MAX)
	358	return -1;
	359	return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
	360	}
	361
	362	int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX ctx, int cmd, const char hex)
	363	{
	364	unsigned char *bin;
	365	long binlen;
	366	int rv = -1;
	367
14f051a0	368	bin = OPENSSL_hexstr2buf(hex, &binlen);
99119000 DSH	369	if (bin == NULL)
	370	return 0;
	371	if (binlen <= INT_MAX)
	372	rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
	373	OPENSSL_free(bin);
	374	return rv;
	375	}
52ad523c	376
410877ba DSH	377	/* Pass a message digest to a ctrl */
	378	int EVP_PKEY_CTX_md(EVP_PKEY_CTX ctx, int optype, int cmd, const char md)
	379	{
	380	const EVP_MD *m;
c82bafc5	381
410877ba DSH	382	if (md == NULL \|\| (m = EVP_get_digestbyname(md)) == NULL) {
	383	EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
	384	return 0;
	385	}
	386	return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
	387	}
99119000	388
b28dea4e	389	int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
0f113f3e MC	390	{
	391	return ctx->operation;
	392	}
b28dea4e DSH	393
b28dea4e DSH	394	void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX ctx, int dat, int datlen)
0f113f3e MC	395	{
	396	ctx->keygen_info = dat;
	397	ctx->keygen_info_count = datlen;
	398	}
b28dea4e	399
f5cda4cb	400	void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX ctx, void data)
0f113f3e MC	401	{
	402	ctx->data = data;
	403	}
f5cda4cb DSH	404
f5cda4cb DSH	405	void EVP_PKEY_CTX_get_data(EVP_PKEY_CTX ctx)
0f113f3e MC	406	{
	407	return ctx->data;
	408	}
f5cda4cb	409
81cebb8b	410	EVP_PKEY EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX ctx)
0f113f3e MC	411	{
	412	return ctx->pkey;
	413	}
81cebb8b	414
0e1dba93	415	EVP_PKEY EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX ctx)
0f113f3e MC	416	{
	417	return ctx->peerkey;
	418	}
	419
f5cda4cb	420	void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX ctx, void data)
0f113f3e MC	421	{
	422	ctx->app_data = data;
	423	}
f5cda4cb DSH	424
f5cda4cb DSH	425	void EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX ctx)
0f113f3e MC	426	{
	427	return ctx->app_data;
	428	}
ba30bad5 DSH	429
ba30bad5 DSH	430	void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	431	int (init) (EVP_PKEY_CTX ctx))
	432	{
	433	pmeth->init = init;
	434	}
8bdcef40 DSH	435
8bdcef40 DSH	436	void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	437	int (copy) (EVP_PKEY_CTX dst,
	438	EVP_PKEY_CTX *src))
	439	{
	440	pmeth->copy = copy;
	441	}
ba30bad5 DSH	442
ba30bad5 DSH	443	void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	444	void (cleanup) (EVP_PKEY_CTX ctx))
	445	{
	446	pmeth->cleanup = cleanup;
	447	}
ba30bad5 DSH	448
ba30bad5 DSH	449	void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	450	int (paramgen_init) (EVP_PKEY_CTX ctx),
	451	int (paramgen) (EVP_PKEY_CTX ctx,
	452	EVP_PKEY *pkey))
	453	{
	454	pmeth->paramgen_init = paramgen_init;
	455	pmeth->paramgen = paramgen;
	456	}
ba30bad5 DSH	457
ba30bad5 DSH	458	void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	459	int (keygen_init) (EVP_PKEY_CTX ctx),
	460	int (keygen) (EVP_PKEY_CTX ctx,
	461	EVP_PKEY *pkey))
	462	{
	463	pmeth->keygen_init = keygen_init;
	464	pmeth->keygen = keygen;
	465	}
ba30bad5 DSH	466
ba30bad5 DSH	467	void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	468	int (sign_init) (EVP_PKEY_CTX ctx),
	469	int (sign) (EVP_PKEY_CTX ctx,
	470	unsigned char sig, size_t siglen,
	471	const unsigned char *tbs,
	472	size_t tbslen))
	473	{
	474	pmeth->sign_init = sign_init;
	475	pmeth->sign = sign;
	476	}
ba30bad5 DSH	477
ba30bad5 DSH	478	void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	479	int (verify_init) (EVP_PKEY_CTX ctx),
	480	int (verify) (EVP_PKEY_CTX ctx,
	481	const unsigned char *sig,
	482	size_t siglen,
	483	const unsigned char *tbs,
	484	size_t tbslen))
	485	{
	486	pmeth->verify_init = verify_init;
	487	pmeth->verify = verify;
	488	}
ba30bad5 DSH	489
ba30bad5 DSH	490	void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	491	int (*verify_recover_init) (EVP_PKEY_CTX
	492	*ctx),
	493	int (*verify_recover) (EVP_PKEY_CTX
	494	*ctx,
	495	unsigned char
	496	*sig,
	497	size_t *siglen,
	498	const unsigned
	499	char *tbs,
	500	size_t tbslen))
	501	{
	502	pmeth->verify_recover_init = verify_recover_init;
	503	pmeth->verify_recover = verify_recover;
	504	}
ba30bad5 DSH	505
ba30bad5 DSH	506	void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	507	int (signctx_init) (EVP_PKEY_CTX ctx,
	508	EVP_MD_CTX *mctx),
	509	int (signctx) (EVP_PKEY_CTX ctx,
	510	unsigned char *sig,
	511	size_t *siglen,
	512	EVP_MD_CTX *mctx))
	513	{
	514	pmeth->signctx_init = signctx_init;
	515	pmeth->signctx = signctx;
	516	}
ba30bad5 DSH	517
ba30bad5 DSH	518	void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	519	int (verifyctx_init) (EVP_PKEY_CTX ctx,
	520	EVP_MD_CTX *mctx),
	521	int (verifyctx) (EVP_PKEY_CTX ctx,
	522	const unsigned char *sig,
	523	int siglen,
	524	EVP_MD_CTX *mctx))
	525	{
	526	pmeth->verifyctx_init = verifyctx_init;
	527	pmeth->verifyctx = verifyctx;
	528	}
ba30bad5 DSH	529
ba30bad5 DSH	530	void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	531	int (encrypt_init) (EVP_PKEY_CTX ctx),
	532	int (encryptfn) (EVP_PKEY_CTX ctx,
	533	unsigned char *out,
	534	size_t *outlen,
	535	const unsigned char *in,
	536	size_t inlen))
	537	{
	538	pmeth->encrypt_init = encrypt_init;
	539	pmeth->encrypt = encryptfn;
	540	}
ba30bad5 DSH	541
ba30bad5 DSH	542	void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	543	int (decrypt_init) (EVP_PKEY_CTX ctx),
	544	int (decrypt) (EVP_PKEY_CTX ctx,
	545	unsigned char *out,
	546	size_t *outlen,
	547	const unsigned char *in,
	548	size_t inlen))
	549	{
	550	pmeth->decrypt_init = decrypt_init;
	551	pmeth->decrypt = decrypt;
	552	}
ba30bad5 DSH	553
ba30bad5 DSH	554	void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	555	int (derive_init) (EVP_PKEY_CTX ctx),
	556	int (derive) (EVP_PKEY_CTX ctx,
	557	unsigned char *key,
	558	size_t *keylen))
	559	{
	560	pmeth->derive_init = derive_init;
	561	pmeth->derive = derive;
	562	}
ba30bad5 DSH	563
ba30bad5 DSH	564	void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
0f113f3e MC	565	int (ctrl) (EVP_PKEY_CTX ctx, int type, int p1,
	566	void *p2),
	567	int (ctrl_str) (EVP_PKEY_CTX ctx,
	568	const char *type,
	569	const char *value))
	570	{
	571	pmeth->ctrl = ctrl;
	572	pmeth->ctrl_str = ctrl_str;
	573	}
e7451ed1 DSH	574
	575	void EVP_PKEY_meth_get_init(EVP_PKEY_METHOD *pmeth,
	576	int (*pinit) (EVP_PKEY_CTX ctx))
	577	{
	578	*pinit = pmeth->init;
	579	}
	580
	581	void EVP_PKEY_meth_get_copy(EVP_PKEY_METHOD *pmeth,
	582	int (*pcopy) (EVP_PKEY_CTX dst,
	583	EVP_PKEY_CTX *src))
	584	{
	585	*pcopy = pmeth->copy;
	586	}
	587
	588	void EVP_PKEY_meth_get_cleanup(EVP_PKEY_METHOD *pmeth,
	589	void (*pcleanup) (EVP_PKEY_CTX ctx))
	590	{
	591	*pcleanup = pmeth->cleanup;
	592	}
	593
	594	void EVP_PKEY_meth_get_paramgen(EVP_PKEY_METHOD *pmeth,
	595	int (*pparamgen_init) (EVP_PKEY_CTX ctx),
	596	int (*pparamgen) (EVP_PKEY_CTX ctx,
	597	EVP_PKEY *pkey))
	598	{
	599	if (pparamgen_init)
	600	*pparamgen_init = pmeth->paramgen_init;
	601	if (pparamgen)
	602	*pparamgen = pmeth->paramgen;
	603	}
	604
	605	void EVP_PKEY_meth_get_keygen(EVP_PKEY_METHOD *pmeth,
	606	int (*pkeygen_init) (EVP_PKEY_CTX ctx),
	607	int (*pkeygen) (EVP_PKEY_CTX ctx,
	608	EVP_PKEY *pkey))
	609	{
	610	if (pkeygen_init)
	611	*pkeygen_init = pmeth->keygen_init;
	612	if (pkeygen)
	613	*pkeygen = pmeth->keygen;
	614	}
	615
	616	void EVP_PKEY_meth_get_sign(EVP_PKEY_METHOD *pmeth,
	617	int (*psign_init) (EVP_PKEY_CTX ctx),
	618	int (*psign) (EVP_PKEY_CTX ctx,
	619	unsigned char sig, size_t siglen,
	620	const unsigned char *tbs,
	621	size_t tbslen))
	622	{
	623	if (psign_init)
	624	*psign_init = pmeth->sign_init;
	625	if (psign)
	626	*psign = pmeth->sign;
	627	}
	628
	629	void EVP_PKEY_meth_get_verify(EVP_PKEY_METHOD *pmeth,
	630	int (*pverify_init) (EVP_PKEY_CTX ctx),
	631	int (*pverify) (EVP_PKEY_CTX ctx,
	632	const unsigned char *sig,
	633	size_t siglen,
	634	const unsigned char *tbs,
	635	size_t tbslen))
	636	{
	637	if (pverify_init)
638	*pverify_init = pmeth->verify_init;
639	if (pverify)
640	*pverify = pmeth->verify;
641	}
642
643	void EVP_PKEY_meth_get_verify_recover(EVP_PKEY_METHOD *pmeth,
644	int (**pverify_recover_init) (EVP_PKEY_CTX
645	*ctx),
646	int (**pverify_recover) (EVP_PKEY_CTX
647	*ctx,
648	unsigned char
649	*sig,
650	size_t *siglen,
651	const unsigned
652	char *tbs,
653	size_t tbslen))
654	{
655	if (pverify_recover_init)
656	*pverify_recover_init = pmeth->verify_recover_init;
657	if (pverify_recover)
658	*pverify_recover = pmeth->verify_recover;
659	}
660
661	void EVP_PKEY_meth_get_signctx(EVP_PKEY_METHOD *pmeth,
662	int (*psignctx_init) (EVP_PKEY_CTX ctx,
663	EVP_MD_CTX *mctx),
664	int (*psignctx) (EVP_PKEY_CTX ctx,
665	unsigned char *sig,
666	size_t *siglen,
667	EVP_MD_CTX *mctx))
668	{
669	if (psignctx_init)
670	*psignctx_init = pmeth->signctx_init;
671	if (psignctx)
672	*psignctx = pmeth->signctx;
673	}
674
675	void EVP_PKEY_meth_get_verifyctx(EVP_PKEY_METHOD *pmeth,
676	int (*pverifyctx_init) (EVP_PKEY_CTX ctx,
677	EVP_MD_CTX *mctx),
678	int (*pverifyctx) (EVP_PKEY_CTX ctx,
679	const unsigned char *sig,
680	int siglen,
681	EVP_MD_CTX *mctx))
682	{
683	if (pverifyctx_init)
684	*pverifyctx_init = pmeth->verifyctx_init;
685	if (pverifyctx)
686	*pverifyctx = pmeth->verifyctx;
687	}
688
689	void EVP_PKEY_meth_get_encrypt(EVP_PKEY_METHOD *pmeth,
690	int (*pencrypt_init) (EVP_PKEY_CTX ctx),
691	int (*pencryptfn) (EVP_PKEY_CTX ctx,
692	unsigned char *out,
693	size_t *outlen,
694	const unsigned char *in,
695	size_t inlen))
696	{
697	if (pencrypt_init)
698	*pencrypt_init = pmeth->encrypt_init;
699	if (pencryptfn)
700	*pencryptfn = pmeth->encrypt;
701	}
702
703	void EVP_PKEY_meth_get_decrypt(EVP_PKEY_METHOD *pmeth,
704	int (*pdecrypt_init) (EVP_PKEY_CTX ctx),
705	int (*pdecrypt) (EVP_PKEY_CTX ctx,
706	unsigned char *out,
707	size_t *outlen,
708	const unsigned char *in,
709	size_t inlen))
710	{
711	if (pdecrypt_init)
712	*pdecrypt_init = pmeth->decrypt_init;
713	if (pdecrypt)
714	*pdecrypt = pmeth->decrypt;
715	}
716
717	void EVP_PKEY_meth_get_derive(EVP_PKEY_METHOD *pmeth,
718	int (*pderive_init) (EVP_PKEY_CTX ctx),
719	int (*pderive) (EVP_PKEY_CTX ctx,
720	unsigned char *key,
721	size_t *keylen))
722	{
723	if (pderive_init)
724	*pderive_init = pmeth->derive_init;
725	if (pderive)
726	*pderive = pmeth->derive;
727	}
728
729	void EVP_PKEY_meth_get_ctrl(EVP_PKEY_METHOD *pmeth,
730	int (*pctrl) (EVP_PKEY_CTX ctx, int type, int p1,
731	void *p2),
732	int (*pctrl_str) (EVP_PKEY_CTX ctx,
733	const char *type,
734	const char *value))
735	{
736	if (pctrl)
737	*pctrl = pmeth->ctrl;
738	if (pctrl_str)
739	*pctrl_str = pmeth->ctrl_str;
740	}