From eb8dd9dca1228af0cd132f515509051ecfabf6f6 Mon Sep 17 00:00:00 2001 From: cvs2svn Date: Mon, 14 Apr 2025 17:32:06 +0000 Subject: This commit was manufactured by cvs2git to create tag 'tb_20250414'. --- src/lib/libcrypto/ec/ec_pmeth.c | 545 ---------------------------------------- 1 file changed, 545 deletions(-) delete mode 100644 src/lib/libcrypto/ec/ec_pmeth.c (limited to 'src/lib/libcrypto/ec/ec_pmeth.c') diff --git a/src/lib/libcrypto/ec/ec_pmeth.c b/src/lib/libcrypto/ec/ec_pmeth.c deleted file mode 100644 index 85ac4822d1..0000000000 --- a/src/lib/libcrypto/ec/ec_pmeth.c +++ /dev/null @@ -1,545 +0,0 @@ -/* $OpenBSD: ec_pmeth.c,v 1.26 2025/03/13 10:39:51 tb Exp $ */ -/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL - * project 2006. - */ -/* ==================================================================== - * Copyright (c) 2006 The OpenSSL Project. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * 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 - * the documentation and/or other materials provided with the - * distribution. - * - * 3. All advertising materials mentioning features or use of this - * software must display the following acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" - * - * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to - * endorse or promote products derived from this software without - * prior written permission. For written permission, please contact - * licensing@OpenSSL.org. - * - * 5. Products derived from this software may not be called "OpenSSL" - * nor may "OpenSSL" appear in their names without prior written - * permission of the OpenSSL Project. - * - * 6. Redistributions of any form whatsoever must retain the following - * acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" - * - * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY - * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR - * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * ==================================================================== - * - * This product includes cryptographic software written by Eric Young - * (eay@cryptsoft.com). This product includes software written by Tim - * Hudson (tjh@cryptsoft.com). - * - */ - -#include -#include -#include - -#include -#include -#include -#include -#include - -#include "bn_local.h" -#include "ec_local.h" -#include "evp_local.h" - -/* EC pkey context structure */ - -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; - - if ((dctx = calloc(1, sizeof(EC_PKEY_CTX))) == NULL) { - ECerror(ERR_R_MALLOC_FAILURE); - return 0; - } - - dctx->cofactor_mode = -1; - dctx->kdf_type = EVP_PKEY_ECDH_KDF_NONE; - - 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; - - 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) { - if ((dctx->kdf_ukm = calloc(1, sctx->kdf_ukmlen)) == NULL) - return 0; - memcpy(dctx->kdf_ukm, sctx->kdf_ukm, sctx->kdf_ukmlen); - } 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 != NULL) { - EC_GROUP_free(dctx->gen_group); - EC_KEY_free(dctx->co_key); - free(dctx->kdf_ukm); - free(dctx); - ctx->data = NULL; - } -} - -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)) { - ECerror(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; - EC_KEY *eckey; - EC_PKEY_CTX *dctx = ctx->data; - - if (!ctx->pkey || !ctx->peerkey) { - ECerror(EC_R_KEYS_NOT_SET); - return 0; - } - - eckey = dctx->co_key ? dctx->co_key : ctx->pkey->pkey.ec; - if (key == NULL) { - *keylen = BN_num_bytes(eckey->group->p); - 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, NULL); - 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; - if ((ktmp = calloc(1, ktmplen)) == NULL) { - ECerror(ERR_R_MALLOC_FAILURE); - return 0; - } - if (!pkey_ec_derive(ctx, ktmp, &ktmplen)) - goto err; - /* Do KDF stuff */ - if (!ecdh_KDF_X9_63(key, *keylen, ktmp, ktmplen, dctx->kdf_ukm, - dctx->kdf_ukmlen, dctx->kdf_md)) - goto err; - rv = 1; - - err: - freezero(ktmp, ktmplen); - - return rv; -} - -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) { - ECerror(EC_R_INVALID_CURVE); - return 0; - } - EC_GROUP_free(dctx->gen_group); - dctx->gen_group = group; - return 1; - - case EVP_PKEY_CTRL_EC_PARAM_ENC: - if (!dctx->gen_group) { - ECerror(EC_R_NO_PARAMETERS_SET); - return 0; - } - EC_GROUP_set_asn1_flag(dctx->gen_group, p1); - return 1; - - 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 { - EC_KEY_free(dctx->co_key); - dctx->co_key = NULL; - } - return 1; - - 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_63) - 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: - 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: - /* RFC 3279, RFC 5758 and NIST CSOR. */ - switch (EVP_MD_type(p2)) { - case NID_sha1: - case NID_ecdsa_with_SHA1: - case NID_sha224: - case NID_sha256: - case NID_sha384: - case NID_sha512: - case NID_sha3_224: - case NID_sha3_256: - case NID_sha3_384: - case NID_sha3_512: - break; - default: - ECerror(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 = EC_curve_nist2nid(value); - if (nid == NID_undef) - nid = OBJ_sn2nid(value); - if (nid == NID_undef) - nid = OBJ_ln2nid(value); - if (nid == NID_undef) { - ECerror(EC_R_INVALID_CURVE); - return 0; - } - return EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, nid); - } else if (strcmp(type, "ec_param_enc") == 0) { - int param_enc; - if (strcmp(value, "explicit") == 0) - param_enc = 0; - else if (strcmp(value, "named_curve") == 0) - 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") == 0) { - const EVP_MD *md; - if ((md = EVP_get_digestbyname(value)) == NULL) { - ECerror(EC_R_INVALID_DIGEST); - return 0; - } - return EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, md); - } else if (strcmp(type, "ecdh_cofactor_mode") == 0) { - int cofactor_mode; - const char *errstr; - - cofactor_mode = strtonum(value, -1, 1, &errstr); - if (errstr != NULL) - return -2; - return EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, cofactor_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) { - ECerror(EC_R_NO_PARAMETERS_SET); - goto err; - } - - if ((ec = EC_KEY_new()) == NULL) - goto err; - if (!EC_KEY_set_group(ec, dctx->gen_group)) - goto err; - if (!EVP_PKEY_assign_EC_KEY(pkey, ec)) - goto err; - ec = NULL; - - ret = 1; - - err: - EC_KEY_free(ec); - - return ret; -} - -static int -pkey_ec_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) -{ - EC_KEY *ec = NULL; - EC_PKEY_CTX *dctx = ctx->data; - int ret = 0; - - if (ctx->pkey == NULL && dctx->gen_group == NULL) { - ECerror(EC_R_NO_PARAMETERS_SET); - goto err; - } - - if ((ec = EC_KEY_new()) == NULL) - goto err; - if (!EVP_PKEY_set1_EC_KEY(pkey, ec)) - goto err; - - if (ctx->pkey != NULL) { - if (!EVP_PKEY_copy_parameters(pkey, ctx->pkey)) - goto err; - } else { - if (!EC_KEY_set_group(ec, dctx->gen_group)) - goto err; - } - - if (!EC_KEY_generate_key(ec)) - goto err; - - ret = 1; - - err: - EC_KEY_free(ec); - - return ret; -} - -const EVP_PKEY_METHOD ec_pkey_meth = { - .pkey_id = EVP_PKEY_EC, - - .init = pkey_ec_init, - .copy = pkey_ec_copy, - .cleanup = pkey_ec_cleanup, - - .paramgen = pkey_ec_paramgen, - - .keygen = pkey_ec_keygen, - - .sign = pkey_ec_sign, - - .verify = pkey_ec_verify, - - .derive = pkey_ec_kdf_derive, - - .ctrl = pkey_ec_ctrl, - .ctrl_str = pkey_ec_ctrl_str -}; -- cgit v1.2.3-55-g6feb