X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=providers%2Fimplementations%2Fsignature%2Fecdsa.c;h=b956917e494d11c129a74972645c32905eebb715;hp=733c0a23a59366b45579e83e378ad2147cb8b825;hb=HEAD;hpb=edd3b7a309f8767fc7d8a5c4f7d350b53e144c1b

diff --git a/providers/implementations/signature/ecdsa.c b/providers/implementations/signature/ecdsa.c
deleted file mode 100644
index 733c0a23a5..0000000000
--- a/providers/implementations/signature/ecdsa.c
+++ /dev/null
@@ -1,514 +0,0 @@
-/*
- * Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
- *
- * Licensed under the Apache License 2.0 (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
- */
-
-/*
- * ECDSA low level APIs are deprecated for public use, but still ok for
- * internal use.
- */
-#include "internal/deprecated.h"
-
-#include <string.h> /* memcpy */
-#include <openssl/crypto.h>
-#include <openssl/core_numbers.h>
-#include <openssl/core_names.h>
-#include <openssl/dsa.h>
-#include <openssl/params.h>
-#include <openssl/evp.h>
-#include <openssl/err.h>
-#include "internal/nelem.h"
-#include "internal/sizes.h"
-#include "prov/providercommonerr.h"
-#include "prov/implementations.h"
-#include "prov/provider_ctx.h"
-#include "crypto/ec.h"
-
-static OSSL_OP_signature_newctx_fn ecdsa_newctx;
-static OSSL_OP_signature_sign_init_fn ecdsa_signature_init;
-static OSSL_OP_signature_verify_init_fn ecdsa_signature_init;
-static OSSL_OP_signature_sign_fn ecdsa_sign;
-static OSSL_OP_signature_verify_fn ecdsa_verify;
-static OSSL_OP_signature_digest_sign_init_fn ecdsa_digest_signverify_init;
-static OSSL_OP_signature_digest_sign_update_fn ecdsa_digest_signverify_update;
-static OSSL_OP_signature_digest_sign_final_fn ecdsa_digest_sign_final;
-static OSSL_OP_signature_digest_verify_init_fn ecdsa_digest_signverify_init;
-static OSSL_OP_signature_digest_verify_update_fn ecdsa_digest_signverify_update;
-static OSSL_OP_signature_digest_verify_final_fn ecdsa_digest_verify_final;
-static OSSL_OP_signature_freectx_fn ecdsa_freectx;
-static OSSL_OP_signature_dupctx_fn ecdsa_dupctx;
-static OSSL_OP_signature_get_ctx_params_fn ecdsa_get_ctx_params;
-static OSSL_OP_signature_gettable_ctx_params_fn ecdsa_gettable_ctx_params;
-static OSSL_OP_signature_set_ctx_params_fn ecdsa_set_ctx_params;
-static OSSL_OP_signature_settable_ctx_params_fn ecdsa_settable_ctx_params;
-static OSSL_OP_signature_get_ctx_md_params_fn ecdsa_get_ctx_md_params;
-static OSSL_OP_signature_gettable_ctx_md_params_fn ecdsa_gettable_ctx_md_params;
-static OSSL_OP_signature_set_ctx_md_params_fn ecdsa_set_ctx_md_params;
-static OSSL_OP_signature_settable_ctx_md_params_fn ecdsa_settable_ctx_md_params;
-
-/*
- * What's passed as an actual key is defined by the KEYMGMT interface.
- * We happen to know that our KEYMGMT simply passes DSA structures, so
- * we use that here too.
- */
-
-typedef struct {
-    OPENSSL_CTX *libctx;
-    EC_KEY *ec;
-    char mdname[OSSL_MAX_NAME_SIZE];
-
-    /* The Algorithm Identifier of the combined signature algorithm */
-    unsigned char aid[OSSL_MAX_ALGORITHM_ID_SIZE];
-    size_t  aid_len;
-    size_t mdsize;
-
-    EVP_MD *md;
-    EVP_MD_CTX *mdctx;
-    /*
-     * This indicates that KAT (CAVS) test is running. Externally an app will
-     * override the random callback such that the generated private key and k
-     * are known.
-     * Normal operation will loop to choose a new k if the signature is not
-     * valid - but for this mode of operation it forces a failure instead.
-     */
-    unsigned int kattest;
-    /*
-     * Internally used to cache the results of calling the EC group
-     * sign_setup() methods which are then passed to the sign operation.
-     * This is used by CAVS failure tests to terminate a loop if the signature
-     * is not valid.
-     * This could of also been done with a simple flag.
-     */
-    BIGNUM *kinv;
-    BIGNUM *r;
-} PROV_ECDSA_CTX;
-
-static void *ecdsa_newctx(void *provctx)
-{
-    PROV_ECDSA_CTX *ctx = OPENSSL_zalloc(sizeof(PROV_ECDSA_CTX));
-
-    if (ctx == NULL)
-        return NULL;
-
-    ctx->libctx = PROV_LIBRARY_CONTEXT_OF(provctx);
-    return ctx;
-}
-
-static int ecdsa_signature_init(void *vctx, void *ec)
-{
-    PROV_ECDSA_CTX *ctx = (PROV_ECDSA_CTX *)vctx;
-
-    if (ctx == NULL || ec == NULL || !EC_KEY_up_ref(ec))
-        return 0;
-    EC_KEY_free(ctx->ec);
-    ctx->ec = ec;
-    return 1;
-}
-
-static int ecdsa_sign(void *vctx, unsigned char *sig, size_t *siglen,
-                      size_t sigsize, const unsigned char *tbs, size_t tbslen)
-{
-    PROV_ECDSA_CTX *ctx = (PROV_ECDSA_CTX *)vctx;
-    int ret;
-    unsigned int sltmp;
-    size_t ecsize = ECDSA_size(ctx->ec);
-
-    if (sig == NULL) {
-        *siglen = ecsize;
-        return 1;
-    }
-
-    if (ctx->kattest && !ECDSA_sign_setup(ctx->ec, NULL, &ctx->kinv, &ctx->r))
-        return 0;
-
-    if (sigsize < (size_t)ecsize)
-        return 0;
-
-    if (ctx->mdsize != 0 && tbslen != ctx->mdsize)
-        return 0;
-
-    ret = ECDSA_sign_ex(0, tbs, tbslen, sig, &sltmp, ctx->kinv, ctx->r, ctx->ec);
-    if (ret <= 0)
-        return 0;
-
-    *siglen = sltmp;
-    return 1;
-}
-
-static int ecdsa_verify(void *vctx, const unsigned char *sig, size_t siglen,
-                        const unsigned char *tbs, size_t tbslen)
-{
-    PROV_ECDSA_CTX *ctx = (PROV_ECDSA_CTX *)vctx;
-
-    if (ctx->mdsize != 0 && tbslen != ctx->mdsize)
-        return 0;
-
-    return ECDSA_verify(0, tbs, tbslen, sig, siglen, ctx->ec);
-}
-
-static int get_md_nid(const EVP_MD *md)
-{
-    /*
-     * Because the ECDSA library deals with NIDs, we need to translate.
-     * We do so using EVP_MD_is_a(), and therefore need a name to NID
-     * map.
-     */
-    static const OSSL_ITEM name_to_nid[] = {
-        { NID_sha1,   OSSL_DIGEST_NAME_SHA1   },
-        { NID_sha224, OSSL_DIGEST_NAME_SHA2_224 },
-        { NID_sha256, OSSL_DIGEST_NAME_SHA2_256 },
-        { NID_sha384, OSSL_DIGEST_NAME_SHA2_384 },
-        { NID_sha512, OSSL_DIGEST_NAME_SHA2_512 },
-        { NID_sha3_224, OSSL_DIGEST_NAME_SHA3_224 },
-        { NID_sha3_256, OSSL_DIGEST_NAME_SHA3_256 },
-        { NID_sha3_384, OSSL_DIGEST_NAME_SHA3_384 },
-        { NID_sha3_512, OSSL_DIGEST_NAME_SHA3_512 },
-        /* TODO - Add SHAKE OIDS when they are standardized */
-
-    };
-    size_t i;
-    int mdnid = NID_undef;
-
-    if (md == NULL)
-        goto end;
-
-    for (i = 0; i < OSSL_NELEM(name_to_nid); i++) {
-        if (EVP_MD_is_a(md, name_to_nid[i].ptr)) {
-            mdnid = (int)name_to_nid[i].id;
-            break;
-        }
-    }
-
-    if (mdnid == NID_undef)
-        ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_DIGEST);
-
- end:
-    return mdnid;
-}
-
-static void free_md(PROV_ECDSA_CTX *ctx)
-{
-    EVP_MD_CTX_free(ctx->mdctx);
-    EVP_MD_free(ctx->md);
-    ctx->mdctx = NULL;
-    ctx->md = NULL;
-    ctx->mdsize = 0;
-}
-
-static int ecdsa_digest_signverify_init(void *vctx, const char *mdname,
-                                        const char *props, void *ec)
-{
-    PROV_ECDSA_CTX *ctx = (PROV_ECDSA_CTX *)vctx;
-    size_t algorithmidentifier_len = 0;
-    const unsigned char *algorithmidentifier;
-
-    free_md(ctx);
-
-    if (!ecdsa_signature_init(vctx, ec))
-        return 0;
-
-    ctx->md = EVP_MD_fetch(ctx->libctx, mdname, props);
-    algorithmidentifier =
-        ecdsa_algorithmidentifier_encoding(get_md_nid(ctx->md),
-                                           &algorithmidentifier_len);
-    if (algorithmidentifier == NULL)
-        goto error;
-
-    ctx->mdsize = EVP_MD_size(ctx->md);
-    ctx->mdctx = EVP_MD_CTX_new();
-    if (ctx->mdctx == NULL)
-        goto error;
-
-    memcpy(ctx->aid, algorithmidentifier, algorithmidentifier_len);
-    ctx->aid_len = algorithmidentifier_len;
-
-    if (!EVP_DigestInit_ex(ctx->mdctx, ctx->md, NULL))
-        goto error;
-    return 1;
-error:
-    free_md(ctx);
-    return 0;
-}
-
-int ecdsa_digest_signverify_update(void *vctx, const unsigned char *data,
-                                   size_t datalen)
-{
-    PROV_ECDSA_CTX *ctx = (PROV_ECDSA_CTX *)vctx;
-
-    if (ctx == NULL || ctx->mdctx == NULL)
-        return 0;
-
-    return EVP_DigestUpdate(ctx->mdctx, data, datalen);
-}
-
-int ecdsa_digest_sign_final(void *vctx, unsigned char *sig, size_t *siglen,
-                            size_t sigsize)
-{
-    PROV_ECDSA_CTX *ctx = (PROV_ECDSA_CTX *)vctx;
-    unsigned char digest[EVP_MAX_MD_SIZE];
-    unsigned int dlen = 0;
-
-    if (ctx == NULL || ctx->mdctx == NULL)
-        return 0;
-
-    /*
-     * If sig is NULL then we're just finding out the sig size. Other fields
-     * are ignored. Defer to ecdsa_sign.
-     */
-    if (sig != NULL) {
-        /*
-         * TODO(3.0): There is the possibility that some externally provided
-         * digests exceed EVP_MAX_MD_SIZE. We should probably handle that somehow -
-         * but that problem is much larger than just in DSA.
-         */
-        if (!EVP_DigestFinal_ex(ctx->mdctx, digest, &dlen))
-            return 0;
-    }
-
-    return ecdsa_sign(vctx, sig, siglen, sigsize, digest, (size_t)dlen);
-}
-
-int ecdsa_digest_verify_final(void *vctx, const unsigned char *sig,
-                              size_t siglen)
-{
-    PROV_ECDSA_CTX *ctx = (PROV_ECDSA_CTX *)vctx;
-    unsigned char digest[EVP_MAX_MD_SIZE];
-    unsigned int dlen = 0;
-
-    if (ctx == NULL || ctx->mdctx == NULL)
-        return 0;
-
-    /*
-     * TODO(3.0): There is the possibility that some externally provided
-     * digests exceed EVP_MAX_MD_SIZE. We should probably handle that somehow -
-     * but that problem is much larger than just in DSA.
-     */
-    if (!EVP_DigestFinal_ex(ctx->mdctx, digest, &dlen))
-        return 0;
-
-    return ecdsa_verify(ctx, sig, siglen, digest, (size_t)dlen);
-}
-
-static void ecdsa_freectx(void *vctx)
-{
-    PROV_ECDSA_CTX *ctx = (PROV_ECDSA_CTX *)vctx;
-
-    free_md(ctx);
-    EC_KEY_free(ctx->ec);
-    BN_clear_free(ctx->kinv);
-    BN_clear_free(ctx->r);
-    OPENSSL_free(ctx);
-}
-
-static void *ecdsa_dupctx(void *vctx)
-{
-    PROV_ECDSA_CTX *srcctx = (PROV_ECDSA_CTX *)vctx;
-    PROV_ECDSA_CTX *dstctx;
-
-    dstctx = OPENSSL_zalloc(sizeof(*srcctx));
-    if (dstctx == NULL)
-        return NULL;
-
-    *dstctx = *srcctx;
-    dstctx->ec = NULL;
-    dstctx->md = NULL;
-    dstctx->mdctx = NULL;
-
-    if (srcctx->ec != NULL && !EC_KEY_up_ref(srcctx->ec))
-        goto err;
-    /* Test KATS should not need to be supported */
-    if (srcctx->kinv != NULL || srcctx->r != NULL)
-        goto err;
-    dstctx->ec = srcctx->ec;
-
-    if (srcctx->md != NULL && !EVP_MD_up_ref(srcctx->md))
-        goto err;
-    dstctx->md = srcctx->md;
-
-    if (srcctx->mdctx != NULL) {
-        dstctx->mdctx = EVP_MD_CTX_new();
-        if (dstctx->mdctx == NULL
-                || !EVP_MD_CTX_copy_ex(dstctx->mdctx, srcctx->mdctx))
-            goto err;
-    }
-
-    return dstctx;
- err:
-    ecdsa_freectx(dstctx);
-    return NULL;
-}
-
-static int ecdsa_get_ctx_params(void *vctx, OSSL_PARAM *params)
-{
-    PROV_ECDSA_CTX *ctx = (PROV_ECDSA_CTX *)vctx;
-    OSSL_PARAM *p;
-
-    if (ctx == NULL || params == NULL)
-        return 0;
-
-    p = OSSL_PARAM_locate(params, OSSL_SIGNATURE_PARAM_ALGORITHM_ID);
-    if (p != NULL && !OSSL_PARAM_set_octet_string(p, ctx->aid, ctx->aid_len))
-        return 0;
-
-    p = OSSL_PARAM_locate(params, OSSL_SIGNATURE_PARAM_DIGEST_SIZE);
-    if (p != NULL && !OSSL_PARAM_set_size_t(p, ctx->mdsize))
-        return 0;
-
-    p = OSSL_PARAM_locate(params, OSSL_SIGNATURE_PARAM_DIGEST);
-    if (p != NULL && !OSSL_PARAM_set_utf8_string(p, ctx->md == NULL
-                                                    ? ctx->mdname
-                                                    : EVP_MD_name(ctx->md)))
-        return 0;
-
-    return 1;
-}
-
-static const OSSL_PARAM known_gettable_ctx_params[] = {
-    OSSL_PARAM_octet_string(OSSL_SIGNATURE_PARAM_ALGORITHM_ID, NULL, 0),
-    OSSL_PARAM_size_t(OSSL_SIGNATURE_PARAM_DIGEST_SIZE, NULL),
-    OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST, NULL, 0),
-    OSSL_PARAM_END
-};
-
-static const OSSL_PARAM *ecdsa_gettable_ctx_params(void)
-{
-    return known_gettable_ctx_params;
-}
-
-static int ecdsa_set_ctx_params(void *vctx, const OSSL_PARAM params[])
-{
-    PROV_ECDSA_CTX *ctx = (PROV_ECDSA_CTX *)vctx;
-    const OSSL_PARAM *p;
-    char *mdname;
-
-    if (ctx == NULL || params == NULL)
-        return 0;
-
-    if (ctx->md != NULL) {
-        /*
-         * You cannot set the digest name/size when doing a DigestSign or
-         * DigestVerify.
-         */
-        return 1;
-    }
-
-    p = OSSL_PARAM_locate_const(params, OSSL_SIGNATURE_PARAM_KAT);
-    if (p != NULL && !OSSL_PARAM_get_uint(p, &ctx->kattest))
-        return 0;
-
-    p = OSSL_PARAM_locate_const(params, OSSL_SIGNATURE_PARAM_DIGEST_SIZE);
-    if (p != NULL && !OSSL_PARAM_get_size_t(p, &ctx->mdsize))
-        return 0;
-
-    /*
-     * We never actually use the mdname, but we do support getting it later.
-     * This can be useful for applications that want to know the MD that they
-     * previously set.
-     */
-    p = OSSL_PARAM_locate_const(params, OSSL_SIGNATURE_PARAM_DIGEST);
-    mdname = ctx->mdname;
-    if (p != NULL
-            && !OSSL_PARAM_get_utf8_string(p, &mdname, sizeof(ctx->mdname)))
-        return 0;
-
-    return 1;
-}
-
-static const OSSL_PARAM known_settable_ctx_params[] = {
-    OSSL_PARAM_size_t(OSSL_SIGNATURE_PARAM_DIGEST_SIZE, NULL),
-    OSSL_PARAM_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST, NULL, 0),
-    OSSL_PARAM_uint(OSSL_SIGNATURE_PARAM_KAT, NULL),
-    OSSL_PARAM_END
-};
-
-static const OSSL_PARAM *ecdsa_settable_ctx_params(void)
-{
-    /*
-     * TODO(3.0): Should this function return a different set of settable ctx
-     * params if the ctx is being used for a DigestSign/DigestVerify? In that
-     * case it is not allowed to set the digest size/digest name because the
-     * digest is explicitly set as part of the init.
-     */
-    return known_settable_ctx_params;
-}
-
-static int ecdsa_get_ctx_md_params(void *vctx, OSSL_PARAM *params)
-{
-    PROV_ECDSA_CTX *ctx = (PROV_ECDSA_CTX *)vctx;
-
-    if (ctx->mdctx == NULL)
-        return 0;
-
-    return EVP_MD_CTX_get_params(ctx->mdctx, params);
-}
-
-static const OSSL_PARAM *ecdsa_gettable_ctx_md_params(void *vctx)
-{
-    PROV_ECDSA_CTX *ctx = (PROV_ECDSA_CTX *)vctx;
-
-    if (ctx->md == NULL)
-        return 0;
-
-    return EVP_MD_gettable_ctx_params(ctx->md);
-}
-
-static int ecdsa_set_ctx_md_params(void *vctx, const OSSL_PARAM params[])
-{
-    PROV_ECDSA_CTX *ctx = (PROV_ECDSA_CTX *)vctx;
-
-    if (ctx->mdctx == NULL)
-        return 0;
-
-    return EVP_MD_CTX_set_params(ctx->mdctx, params);
-}
-
-static const OSSL_PARAM *ecdsa_settable_ctx_md_params(void *vctx)
-{
-    PROV_ECDSA_CTX *ctx = (PROV_ECDSA_CTX *)vctx;
-
-    if (ctx->md == NULL)
-        return 0;
-
-    return EVP_MD_settable_ctx_params(ctx->md);
-}
-
-const OSSL_DISPATCH ecdsa_signature_functions[] = {
-    { OSSL_FUNC_SIGNATURE_NEWCTX, (void (*)(void))ecdsa_newctx },
-    { OSSL_FUNC_SIGNATURE_SIGN_INIT, (void (*)(void))ecdsa_signature_init },
-    { OSSL_FUNC_SIGNATURE_SIGN, (void (*)(void))ecdsa_sign },
-    { OSSL_FUNC_SIGNATURE_VERIFY_INIT, (void (*)(void))ecdsa_signature_init },
-    { OSSL_FUNC_SIGNATURE_VERIFY, (void (*)(void))ecdsa_verify },
-    { OSSL_FUNC_SIGNATURE_DIGEST_SIGN_INIT,
-      (void (*)(void))ecdsa_digest_signverify_init },
-    { OSSL_FUNC_SIGNATURE_DIGEST_SIGN_UPDATE,
-      (void (*)(void))ecdsa_digest_signverify_update },
-    { OSSL_FUNC_SIGNATURE_DIGEST_SIGN_FINAL,
-      (void (*)(void))ecdsa_digest_sign_final },
-    { OSSL_FUNC_SIGNATURE_DIGEST_VERIFY_INIT,
-      (void (*)(void))ecdsa_digest_signverify_init },
-    { OSSL_FUNC_SIGNATURE_DIGEST_VERIFY_UPDATE,
-      (void (*)(void))ecdsa_digest_signverify_update },
-    { OSSL_FUNC_SIGNATURE_DIGEST_VERIFY_FINAL,
-      (void (*)(void))ecdsa_digest_verify_final },
-    { OSSL_FUNC_SIGNATURE_FREECTX, (void (*)(void))ecdsa_freectx },
-    { OSSL_FUNC_SIGNATURE_DUPCTX, (void (*)(void))ecdsa_dupctx },
-    { OSSL_FUNC_SIGNATURE_GET_CTX_PARAMS, (void (*)(void))ecdsa_get_ctx_params },
-    { OSSL_FUNC_SIGNATURE_GETTABLE_CTX_PARAMS,
-      (void (*)(void))ecdsa_gettable_ctx_params },
-    { OSSL_FUNC_SIGNATURE_SET_CTX_PARAMS, (void (*)(void))ecdsa_set_ctx_params },
-    { OSSL_FUNC_SIGNATURE_SETTABLE_CTX_PARAMS,
-      (void (*)(void))ecdsa_settable_ctx_params },
-    { OSSL_FUNC_SIGNATURE_GET_CTX_MD_PARAMS,
-      (void (*)(void))ecdsa_get_ctx_md_params },
-    { OSSL_FUNC_SIGNATURE_GETTABLE_CTX_MD_PARAMS,
-      (void (*)(void))ecdsa_gettable_ctx_md_params },
-    { OSSL_FUNC_SIGNATURE_SET_CTX_MD_PARAMS,
-      (void (*)(void))ecdsa_set_ctx_md_params },
-    { OSSL_FUNC_SIGNATURE_SETTABLE_CTX_MD_PARAMS,
-      (void (*)(void))ecdsa_settable_ctx_md_params },
-    { 0, NULL }
-};