Merged origin/release (checked in because wanted to merge new stuff)

1 files changed, 448 insertions, 259 deletions

diff --git a/openssl/crypto/ec/ec_pmeth.c b/openssl/crypto/ec/ec_pmeth.c
index 66ee397d8..b76749010 100644
--- a/openssl/crypto/ec/ec_pmeth.c
+++ b/openssl/crypto/ec/ec_pmeth.c
@@ -1,5 +1,6 @@
-/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
- * project 2006.
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2006.
  */
 /* ====================================================================
  * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
@@ -9,7 +10,7 @@
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer. 
+ *    notice, this list of conditions and the following disclaimer.
  *
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in
@@ -60,282 +61,470 @@
 #include <openssl/asn1t.h>
 #include <openssl/x509.h>
 #include <openssl/ec.h>
+#include "ec_lcl.h"
 #include <openssl/ecdsa.h>
 #include <openssl/evp.h>
 #include "evp_locl.h"
 
 /* EC pkey context structure */
 
-typedef struct
-	{
-	/* Key and paramgen group */
-	EC_GROUP *gen_group;
-	/* message digest */
-	const EVP_MD *md;
-	} EC_PKEY_CTX;
+typedef struct {
+    /* Key and paramgen group */
+    EC_GROUP *gen_group;
+    /* message digest */
+    const EVP_MD *md;
+    /* Duplicate key if custom cofactor needed */
+    EC_KEY *co_key;
+    /* Cofactor mode */
+    signed char cofactor_mode;
+    /* KDF (if any) to use for ECDH */
+    char kdf_type;
+    /* Message digest to use for key derivation */
+    const EVP_MD *kdf_md;
+    /* User key material */
+    unsigned char *kdf_ukm;
+    size_t kdf_ukmlen;
+    /* KDF output length */
+    size_t kdf_outlen;
+} EC_PKEY_CTX;
 
 static int pkey_ec_init(EVP_PKEY_CTX *ctx)
-	{
-	EC_PKEY_CTX *dctx;
-	dctx = OPENSSL_malloc(sizeof(EC_PKEY_CTX));
-	if (!dctx)
-		return 0;
-	dctx->gen_group = NULL;
-	dctx->md = NULL;
-
-	ctx->data = dctx;
-
-	return 1;
-	}
+{
+    EC_PKEY_CTX *dctx;
+    dctx = OPENSSL_malloc(sizeof(EC_PKEY_CTX));
+    if (!dctx)
+        return 0;
+    dctx->gen_group = NULL;
+    dctx->md = NULL;
+
+    dctx->cofactor_mode = -1;
+    dctx->co_key = NULL;
+    dctx->kdf_type = EVP_PKEY_ECDH_KDF_NONE;
+    dctx->kdf_md = NULL;
+    dctx->kdf_outlen = 0;
+    dctx->kdf_ukm = NULL;
+    dctx->kdf_ukmlen = 0;
+
+    ctx->data = dctx;
+
+    return 1;
+}
 
 static int pkey_ec_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
-	{
-	EC_PKEY_CTX *dctx, *sctx;
-	if (!pkey_ec_init(dst))
-		return 0;
-       	sctx = src->data;
-	dctx = dst->data;
-	if (sctx->gen_group)
-		{
-		dctx->gen_group = EC_GROUP_dup(sctx->gen_group);
-		if (!dctx->gen_group)
-			return 0;
-		}
-	dctx->md = sctx->md;
-	return 1;
-	}
+{
+    EC_PKEY_CTX *dctx, *sctx;
+    if (!pkey_ec_init(dst))
+        return 0;
+    sctx = src->data;
+    dctx = dst->data;
+    if (sctx->gen_group) {
+        dctx->gen_group = EC_GROUP_dup(sctx->gen_group);
+        if (!dctx->gen_group)
+            return 0;
+    }
+    dctx->md = sctx->md;
+
+    if (sctx->co_key) {
+        dctx->co_key = EC_KEY_dup(sctx->co_key);
+        if (!dctx->co_key)
+            return 0;
+    }
+    dctx->kdf_type = sctx->kdf_type;
+    dctx->kdf_md = sctx->kdf_md;
+    dctx->kdf_outlen = sctx->kdf_outlen;
+    if (sctx->kdf_ukm) {
+        dctx->kdf_ukm = BUF_memdup(sctx->kdf_ukm, sctx->kdf_ukmlen);
+        if (!dctx->kdf_ukm)
+            return 0;
+    } else
+        dctx->kdf_ukm = NULL;
+    dctx->kdf_ukmlen = sctx->kdf_ukmlen;
+    return 1;
+}
 
 static void pkey_ec_cleanup(EVP_PKEY_CTX *ctx)
-	{
-	EC_PKEY_CTX *dctx = ctx->data;
-	if (dctx)
-		{
-		if (dctx->gen_group)
-			EC_GROUP_free(dctx->gen_group);
-		OPENSSL_free(dctx);
-		}
-	}
+{
+    EC_PKEY_CTX *dctx = ctx->data;
+    if (dctx) {
+        if (dctx->gen_group)
+            EC_GROUP_free(dctx->gen_group);
+        if (dctx->co_key)
+            EC_KEY_free(dctx->co_key);
+        if (dctx->kdf_ukm)
+            OPENSSL_free(dctx->kdf_ukm);
+        OPENSSL_free(dctx);
+    }
+}
 
 static int pkey_ec_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
-					const unsigned char *tbs, size_t tbslen)
-	{
-	int ret, type;
-	unsigned int sltmp;
-	EC_PKEY_CTX *dctx = ctx->data;
-	EC_KEY *ec = ctx->pkey->pkey.ec;
-
-	if (!sig)
-		{
-		*siglen = ECDSA_size(ec);
-		return 1;
-		}
-	else if(*siglen < (size_t)ECDSA_size(ec))
-		{
-		ECerr(EC_F_PKEY_EC_SIGN, EC_R_BUFFER_TOO_SMALL);
-		return 0;
-		}
-
-	if (dctx->md)
-		type = EVP_MD_type(dctx->md);
-	else
-		type = NID_sha1;
-
-
-	ret = ECDSA_sign(type, tbs, tbslen, sig, &sltmp, ec);
-
-	if (ret <= 0)
-		return ret;
-	*siglen = (size_t)sltmp;
-	return 1;
-	}
+                        const unsigned char *tbs, size_t tbslen)
+{
+    int ret, type;
+    unsigned int sltmp;
+    EC_PKEY_CTX *dctx = ctx->data;
+    EC_KEY *ec = ctx->pkey->pkey.ec;
+
+    if (!sig) {
+        *siglen = ECDSA_size(ec);
+        return 1;
+    } else if (*siglen < (size_t)ECDSA_size(ec)) {
+        ECerr(EC_F_PKEY_EC_SIGN, EC_R_BUFFER_TOO_SMALL);
+        return 0;
+    }
+
+    if (dctx->md)
+        type = EVP_MD_type(dctx->md);
+    else
+        type = NID_sha1;
+
+    ret = ECDSA_sign(type, tbs, tbslen, sig, &sltmp, ec);
+
+    if (ret <= 0)
+        return ret;
+    *siglen = (size_t)sltmp;
+    return 1;
+}
 
 static int pkey_ec_verify(EVP_PKEY_CTX *ctx,
-					const unsigned char *sig, size_t siglen,
-					const unsigned char *tbs, size_t tbslen)
-	{
-	int ret, type;
-	EC_PKEY_CTX *dctx = ctx->data;
-	EC_KEY *ec = ctx->pkey->pkey.ec;
-
-	if (dctx->md)
-		type = EVP_MD_type(dctx->md);
-	else
-		type = NID_sha1;
-
-	ret = ECDSA_verify(type, tbs, tbslen, sig, siglen, ec);
-
-	return ret;
-	}
-
-static int pkey_ec_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen)
-	{
-	int ret;
-	size_t outlen;
-	const EC_POINT *pubkey = NULL;
-	if (!ctx->pkey || !ctx->peerkey)
-		{
-		ECerr(EC_F_PKEY_EC_DERIVE, EC_R_KEYS_NOT_SET);
-		return 0;
-		}
-
-	if (!key)
-		{
-		const EC_GROUP *group;
-		group = EC_KEY_get0_group(ctx->pkey->pkey.ec);
-		*keylen = (EC_GROUP_get_degree(group) + 7)/8;
-		return 1;
-		}
-
-	pubkey = EC_KEY_get0_public_key(ctx->peerkey->pkey.ec);
-
-	/* NB: unlike PKCS#3 DH, if *outlen is less than maximum size this is
-	 * not an error, the result is truncated.
-	 */
-
-	outlen = *keylen;
-		
-	ret = ECDH_compute_key(key, outlen, pubkey, ctx->pkey->pkey.ec, 0);
-	if (ret < 0)
-		return ret;
-	*keylen = ret;
-	return 1;
-	}
+                          const unsigned char *sig, size_t siglen,
+                          const unsigned char *tbs, size_t tbslen)
+{
+    int ret, type;
+    EC_PKEY_CTX *dctx = ctx->data;
+    EC_KEY *ec = ctx->pkey->pkey.ec;
+
+    if (dctx->md)
+        type = EVP_MD_type(dctx->md);
+    else
+        type = NID_sha1;
+
+    ret = ECDSA_verify(type, tbs, tbslen, sig, siglen, ec);
+
+    return ret;
+}
+
+#ifndef OPENSSL_NO_ECDH
+static int pkey_ec_derive(EVP_PKEY_CTX *ctx, unsigned char *key,
+                          size_t *keylen)
+{
+    int ret;
+    size_t outlen;
+    const EC_POINT *pubkey = NULL;
+    EC_KEY *eckey;
+    EC_PKEY_CTX *dctx = ctx->data;
+    if (!ctx->pkey || !ctx->peerkey) {
+        ECerr(EC_F_PKEY_EC_DERIVE, EC_R_KEYS_NOT_SET);
+        return 0;
+    }
+
+    eckey = dctx->co_key ? dctx->co_key : ctx->pkey->pkey.ec;
+
+    if (!key) {
+        const EC_GROUP *group;
+        group = EC_KEY_get0_group(eckey);
+        *keylen = (EC_GROUP_get_degree(group) + 7) / 8;
+        return 1;
+    }
+    pubkey = EC_KEY_get0_public_key(ctx->peerkey->pkey.ec);
+
+    /*
+     * NB: unlike PKCS#3 DH, if *outlen is less than maximum size this is not
+     * an error, the result is truncated.
+     */
+
+    outlen = *keylen;
+
+    ret = ECDH_compute_key(key, outlen, pubkey, eckey, 0);
+    if (ret <= 0)
+        return 0;
+    *keylen = ret;
+    return 1;
+}
+
+static int pkey_ec_kdf_derive(EVP_PKEY_CTX *ctx,
+                              unsigned char *key, size_t *keylen)
+{
+    EC_PKEY_CTX *dctx = ctx->data;
+    unsigned char *ktmp = NULL;
+    size_t ktmplen;
+    int rv = 0;
+    if (dctx->kdf_type == EVP_PKEY_ECDH_KDF_NONE)
+        return pkey_ec_derive(ctx, key, keylen);
+    if (!key) {
+        *keylen = dctx->kdf_outlen;
+        return 1;
+    }
+    if (*keylen != dctx->kdf_outlen)
+        return 0;
+    if (!pkey_ec_derive(ctx, NULL, &ktmplen))
+        return 0;
+    ktmp = OPENSSL_malloc(ktmplen);
+    if (!ktmp)
+        return 0;
+    if (!pkey_ec_derive(ctx, ktmp, &ktmplen))
+        goto err;
+    /* Do KDF stuff */
+    if (!ECDH_KDF_X9_62(key, *keylen, ktmp, ktmplen,
+                        dctx->kdf_ukm, dctx->kdf_ukmlen, dctx->kdf_md))
+        goto err;
+    rv = 1;
+
+ err:
+    if (ktmp) {
+        OPENSSL_cleanse(ktmp, ktmplen);
+        OPENSSL_free(ktmp);
+    }
+    return rv;
+}
+#endif
 
 static int pkey_ec_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
-	{
-	EC_PKEY_CTX *dctx = ctx->data;
-	EC_GROUP *group;
-	switch (type)
-		{
-		case EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID:
-		group = EC_GROUP_new_by_curve_name(p1);
-		if (group == NULL)
-			{
-			ECerr(EC_F_PKEY_EC_CTRL, EC_R_INVALID_CURVE);
-			return 0;
-			}
-		if (dctx->gen_group)
-			EC_GROUP_free(dctx->gen_group);
-		dctx->gen_group = group;
-		return 1;
-
-		case EVP_PKEY_CTRL_MD:
-		if (EVP_MD_type((const EVP_MD *)p2) != NID_sha1 &&
-		    EVP_MD_type((const EVP_MD *)p2) != NID_ecdsa_with_SHA1 &&
-		    EVP_MD_type((const EVP_MD *)p2) != NID_sha224 &&
-		    EVP_MD_type((const EVP_MD *)p2) != NID_sha256 &&
-		    EVP_MD_type((const EVP_MD *)p2) != NID_sha384 &&
-		    EVP_MD_type((const EVP_MD *)p2) != NID_sha512)
-			{
-			ECerr(EC_F_PKEY_EC_CTRL, EC_R_INVALID_DIGEST_TYPE);
-			return 0;
-			}
-		dctx->md = p2;
-		return 1;
-
-		case EVP_PKEY_CTRL_PEER_KEY:
-		/* Default behaviour is OK */
-		case EVP_PKEY_CTRL_DIGESTINIT:
-		case EVP_PKEY_CTRL_PKCS7_SIGN:
-		case EVP_PKEY_CTRL_CMS_SIGN:
-		return 1;
-
-		default:
-		return -2;
-
-		}
-	}
-			
+{
+    EC_PKEY_CTX *dctx = ctx->data;
+    EC_GROUP *group;
+    switch (type) {
+    case EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID:
+        group = EC_GROUP_new_by_curve_name(p1);
+        if (group == NULL) {
+            ECerr(EC_F_PKEY_EC_CTRL, EC_R_INVALID_CURVE);
+            return 0;
+        }
+        if (dctx->gen_group)
+            EC_GROUP_free(dctx->gen_group);
+        dctx->gen_group = group;
+        return 1;
+
+    case EVP_PKEY_CTRL_EC_PARAM_ENC:
+        if (!dctx->gen_group) {
+            ECerr(EC_F_PKEY_EC_CTRL, EC_R_NO_PARAMETERS_SET);
+            return 0;
+        }
+        EC_GROUP_set_asn1_flag(dctx->gen_group, p1);
+        return 1;
+
+#ifndef OPENSSL_NO_ECDH
+    case EVP_PKEY_CTRL_EC_ECDH_COFACTOR:
+        if (p1 == -2) {
+            if (dctx->cofactor_mode != -1)
+                return dctx->cofactor_mode;
+            else {
+                EC_KEY *ec_key = ctx->pkey->pkey.ec;
+                return EC_KEY_get_flags(ec_key) & EC_FLAG_COFACTOR_ECDH ? 1 :
+                    0;
+            }
+        } else if (p1 < -1 || p1 > 1)
+            return -2;
+        dctx->cofactor_mode = p1;
+        if (p1 != -1) {
+            EC_KEY *ec_key = ctx->pkey->pkey.ec;
+            if (!ec_key->group)
+                return -2;
+            /* If cofactor is 1 cofactor mode does nothing */
+            if (BN_is_one(&ec_key->group->cofactor))
+                return 1;
+            if (!dctx->co_key) {
+                dctx->co_key = EC_KEY_dup(ec_key);
+                if (!dctx->co_key)
+                    return 0;
+            }
+            if (p1)
+                EC_KEY_set_flags(dctx->co_key, EC_FLAG_COFACTOR_ECDH);
+            else
+                EC_KEY_clear_flags(dctx->co_key, EC_FLAG_COFACTOR_ECDH);
+        } else if (dctx->co_key) {
+            EC_KEY_free(dctx->co_key);
+            dctx->co_key = NULL;
+        }
+        return 1;
+#endif
+
+    case EVP_PKEY_CTRL_EC_KDF_TYPE:
+        if (p1 == -2)
+            return dctx->kdf_type;
+        if (p1 != EVP_PKEY_ECDH_KDF_NONE && p1 != EVP_PKEY_ECDH_KDF_X9_62)
+            return -2;
+        dctx->kdf_type = p1;
+        return 1;
+
+    case EVP_PKEY_CTRL_EC_KDF_MD:
+        dctx->kdf_md = p2;
+        return 1;
+
+    case EVP_PKEY_CTRL_GET_EC_KDF_MD:
+        *(const EVP_MD **)p2 = dctx->kdf_md;
+        return 1;
+
+    case EVP_PKEY_CTRL_EC_KDF_OUTLEN:
+        if (p1 <= 0)
+            return -2;
+        dctx->kdf_outlen = (size_t)p1;
+        return 1;
+
+    case EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN:
+        *(int *)p2 = dctx->kdf_outlen;
+        return 1;
+
+    case EVP_PKEY_CTRL_EC_KDF_UKM:
+        if (dctx->kdf_ukm)
+            OPENSSL_free(dctx->kdf_ukm);
+        dctx->kdf_ukm = p2;
+        if (p2)
+            dctx->kdf_ukmlen = p1;
+        else
+            dctx->kdf_ukmlen = 0;
+        return 1;
+
+    case EVP_PKEY_CTRL_GET_EC_KDF_UKM:
+        *(unsigned char **)p2 = dctx->kdf_ukm;
+        return dctx->kdf_ukmlen;
+
+    case EVP_PKEY_CTRL_MD:
+        if (EVP_MD_type((const EVP_MD *)p2) != NID_sha1 &&
+            EVP_MD_type((const EVP_MD *)p2) != NID_ecdsa_with_SHA1 &&
+            EVP_MD_type((const EVP_MD *)p2) != NID_sha224 &&
+            EVP_MD_type((const EVP_MD *)p2) != NID_sha256 &&
+            EVP_MD_type((const EVP_MD *)p2) != NID_sha384 &&
+            EVP_MD_type((const EVP_MD *)p2) != NID_sha512) {
+            ECerr(EC_F_PKEY_EC_CTRL, EC_R_INVALID_DIGEST_TYPE);
+            return 0;
+        }
+        dctx->md = p2;
+        return 1;
+
+    case EVP_PKEY_CTRL_GET_MD:
+        *(const EVP_MD **)p2 = dctx->md;
+        return 1;
+
+    case EVP_PKEY_CTRL_PEER_KEY:
+        /* Default behaviour is OK */
+    case EVP_PKEY_CTRL_DIGESTINIT:
+    case EVP_PKEY_CTRL_PKCS7_SIGN:
+    case EVP_PKEY_CTRL_CMS_SIGN:
+        return 1;
+
+    default:
+        return -2;
+
+    }
+}
+
 static int pkey_ec_ctrl_str(EVP_PKEY_CTX *ctx,
-			const char *type, const char *value)
-	{
-	if (!strcmp(type, "ec_paramgen_curve"))
-		{
-		int nid;
-		nid = OBJ_sn2nid(value);
-		if (nid == NID_undef)
-			nid = OBJ_ln2nid(value);
-		if (nid == NID_undef)
-			{
-			ECerr(EC_F_PKEY_EC_CTRL_STR, EC_R_INVALID_CURVE);
-			return 0;
-			}
-		return EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, nid);
-		}
-	return -2;
-	}
+                            const char *type, const char *value)
+{
+    if (!strcmp(type, "ec_paramgen_curve")) {
+        int nid;
+        nid = EC_curve_nist2nid(value);
+        if (nid == NID_undef)
+            nid = OBJ_sn2nid(value);
+        if (nid == NID_undef)
+            nid = OBJ_ln2nid(value);
+        if (nid == NID_undef) {
+            ECerr(EC_F_PKEY_EC_CTRL_STR, EC_R_INVALID_CURVE);
+            return 0;
+        }
+        return EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, nid);
+    } else if (!strcmp(type, "ec_param_enc")) {
+        int param_enc;
+        if (!strcmp(value, "explicit"))
+            param_enc = 0;
+        else if (!strcmp(value, "named_curve"))
+            param_enc = OPENSSL_EC_NAMED_CURVE;
+        else
+            return -2;
+        return EVP_PKEY_CTX_set_ec_param_enc(ctx, param_enc);
+    } else if (!strcmp(type, "ecdh_kdf_md")) {
+        const EVP_MD *md;
+        if (!(md = EVP_get_digestbyname(value))) {
+            ECerr(EC_F_PKEY_EC_CTRL_STR, EC_R_INVALID_DIGEST);
+            return 0;
+        }
+        return EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, md);
+    } else if (!strcmp(type, "ecdh_cofactor_mode")) {
+        int co_mode;
+        co_mode = atoi(value);
+        return EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, co_mode);
+    }
+
+    return -2;
+}
 
 static int pkey_ec_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
-	{
-	EC_KEY *ec = NULL;
-	EC_PKEY_CTX *dctx = ctx->data;
-	int ret = 0;
-	if (dctx->gen_group == NULL)
-		{
-		ECerr(EC_F_PKEY_EC_PARAMGEN, EC_R_NO_PARAMETERS_SET);
-		return 0;
-		}
-	ec = EC_KEY_new();
-	if (!ec)
-		return 0;
-	ret = EC_KEY_set_group(ec, dctx->gen_group);
-	if (ret)
-		EVP_PKEY_assign_EC_KEY(pkey, ec);
-	else
-		EC_KEY_free(ec);
-	return ret;
-	}
+{
+    EC_KEY *ec = NULL;
+    EC_PKEY_CTX *dctx = ctx->data;
+    int ret = 0;
+    if (dctx->gen_group == NULL) {
+        ECerr(EC_F_PKEY_EC_PARAMGEN, EC_R_NO_PARAMETERS_SET);
+        return 0;
+    }
+    ec = EC_KEY_new();
+    if (!ec)
+        return 0;
+    ret = EC_KEY_set_group(ec, dctx->gen_group);
+    if (ret)
+        EVP_PKEY_assign_EC_KEY(pkey, ec);
+    else
+        EC_KEY_free(ec);
+    return ret;
+}
 
 static int pkey_ec_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
-	{
-	EC_KEY *ec = NULL;
-	if (ctx->pkey == NULL)
-		{
-		ECerr(EC_F_PKEY_EC_KEYGEN, EC_R_NO_PARAMETERS_SET);
-		return 0;
-		}
-	ec = EC_KEY_new();
-	if (!ec)
-		return 0;
-	EVP_PKEY_assign_EC_KEY(pkey, ec);
-	/* Note: if error return, pkey is freed by parent routine */
-	if (!EVP_PKEY_copy_parameters(pkey, ctx->pkey))
-		return 0;
-	return EC_KEY_generate_key(pkey->pkey.ec);
-	}
-
-const EVP_PKEY_METHOD ec_pkey_meth = 
-	{
-	EVP_PKEY_EC,
-	0,
-	pkey_ec_init,
-	pkey_ec_copy,
-	pkey_ec_cleanup,
-
-	0,
-	pkey_ec_paramgen,
-
-	0,
-	pkey_ec_keygen,
-
-	0,
-	pkey_ec_sign,
-
-	0,
-	pkey_ec_verify,
-
-	0,0,
-
-	0,0,0,0,
-
-	0,0,
-
-	0,0,
-
-	0,
-	pkey_ec_derive,
-
-	pkey_ec_ctrl,
-	pkey_ec_ctrl_str
-
-	};
+{
+    EC_KEY *ec = NULL;
+    EC_PKEY_CTX *dctx = ctx->data;
+    if (ctx->pkey == NULL && dctx->gen_group == NULL) {
+        ECerr(EC_F_PKEY_EC_KEYGEN, EC_R_NO_PARAMETERS_SET);
+        return 0;
+    }
+    ec = EC_KEY_new();
+    if (!ec)
+        return 0;
+    EVP_PKEY_assign_EC_KEY(pkey, ec);
+    if (ctx->pkey) {
+        /* Note: if error return, pkey is freed by parent routine */
+        if (!EVP_PKEY_copy_parameters(pkey, ctx->pkey))
+            return 0;
+    } else {
+        if (!EC_KEY_set_group(ec, dctx->gen_group))
+            return 0;
+    }
+    return EC_KEY_generate_key(pkey->pkey.ec);
+}
+
+const EVP_PKEY_METHOD ec_pkey_meth = {
+    EVP_PKEY_EC,
+    0,
+    pkey_ec_init,
+    pkey_ec_copy,
+    pkey_ec_cleanup,
+
+    0,
+    pkey_ec_paramgen,
+
+    0,
+    pkey_ec_keygen,
+
+    0,
+    pkey_ec_sign,
+
+    0,
+    pkey_ec_verify,
+
+    0, 0,
+
+    0, 0, 0, 0,
+
+    0, 0,
+
+    0, 0,
+
+    0,
+#ifndef OPENSSL_NO_ECDH
+    pkey_ec_kdf_derive,
+#else
+    0,
+#endif
+
+    pkey_ec_ctrl,
+    pkey_ec_ctrl_str
+};