Index: trunk/src/VBox/Runtime/common/crypto/key-openssl.cpp
===================================================================
--- trunk/src/VBox/Runtime/common/crypto/key-openssl.cpp	(revision 100444)
+++ trunk/src/VBox/Runtime/common/crypto/key-openssl.cpp	(revision 100445)
@@ -72,4 +72,5 @@
         || hKey->enmType == RTCRKEYTYPE_ECDSA_PRIVATE)
     {
+# if OPENSSL_VERSION_NUMBER >= 0x30000000 && !defined(LIBRESSL_VERSION_NUMBER)
         void          *pvFree = NULL;
         const uint8_t *pbRaw  = NULL;
@@ -90,4 +91,11 @@
             RTMemTmpFree(pvFree);
         }
+#else
+        /** @todo d2i_KeyParams was introduced with 3.0.0, so ECDSA stuff won't work
+         *        with older openssl versions atm.  Fortunately we only really needs
+         *        it on Windows atm., so no problem. */
+        rc = RTERRINFO_LOG_SET_F(pErrInfo, VERR_NOT_SUPPORTED,
+                                 "OpenSSL version %#x is too old for IPRTs ECDSA code", OPENSSL_VERSION_NUMBER);
+#endif
     }
     return rc;
Index: trunk/src/VBox/Runtime/common/crypto/pkix-signature-ossl.cpp
===================================================================
--- trunk/src/VBox/Runtime/common/crypto/pkix-signature-ossl.cpp	(revision 100445)
+++ trunk/src/VBox/Runtime/common/crypto/pkix-signature-ossl.cpp	(revision 100445)
@@ -0,0 +1,284 @@
+/* $Id$ */
+/** @file
+ * IPRT - Crypto - Public Key Signature Schema Algorithm, ECDSA Providers.
+ */
+
+/*
+ * Copyright (C) 2006-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#ifdef IPRT_WITH_OPENSSL /* whole file */
+# define LOG_GROUP RTLOGGROUP_CRYPTO
+# include "internal/iprt.h"
+# include <iprt/crypto/rsa.h>
+
+# include <iprt/bignum.h>
+# include <iprt/err.h>
+# include <iprt/log.h>
+# include <iprt/mem.h>
+# include <iprt/string.h>
+# include <iprt/crypto/digest.h>
+# include <iprt/crypto/pkix.h>
+
+# include "internal/iprt-openssl.h"
+# include "internal/openssl-pre.h"
+# include <openssl/evp.h>
+# include "internal/openssl-post.h"
+# ifndef OPENSSL_VERSION_NUMBER
+#  error "Missing OPENSSL_VERSION_NUMBER!"
+# endif
+
+# include "pkix-signature-builtin.h"
+# include "rsa-internal.h"
+# include "key-internal.h"
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+/**
+ * OpenSSL EVP signature provider instance.
+ */
+typedef struct RTCRPKIXSIGNATUREOSSLEVP
+{
+    /** Set if we're signing, clear if verifying.  */
+    bool                    fSigning;
+} RTCRPKIXSIGNATUREOSSLEVP;
+/** Pointer to an OpenSSL EVP signature provider instance. */
+typedef RTCRPKIXSIGNATUREOSSLEVP *PRTCRPKIXSIGNATUREOSSLEVP;
+
+
+
+/** @impl_interface_method{RTCRPKIXSIGNATUREDESC,pfnInit}  */
+static DECLCALLBACK(int) rtCrPkixSignatureOsslEvp_Init(PCRTCRPKIXSIGNATUREDESC pDesc, void *pvState, void *pvOpaque,
+                                                       bool fSigning, RTCRKEY hKey, PCRTASN1DYNTYPE pParams)
+{
+    RT_NOREF_PV(pvOpaque);
+
+    RTCRKEYTYPE enmKeyType = RTCrKeyGetType(hKey);
+    if (strcmp(pDesc->pszObjId, RTCR_X962_ECDSA_OID) == 0)
+    {
+        if (fSigning)
+            AssertReturn(enmKeyType == RTCRKEYTYPE_ECDSA_PRIVATE, VERR_CR_PKIX_NOT_ECDSA_PRIVATE_KEY);
+        else
+            AssertReturn(enmKeyType == RTCRKEYTYPE_ECDSA_PUBLIC, VERR_CR_PKIX_NOT_ECDSA_PUBLIC_KEY);
+    }
+    else if (strcmp(pDesc->pszObjId, RTCR_PKCS1_RSA_OID) == 0)
+    {
+        if (fSigning)
+            AssertReturn(enmKeyType == RTCRKEYTYPE_RSA_PRIVATE, VERR_CR_PKIX_NOT_RSA_PRIVATE_KEY);
+        else
+            AssertReturn(enmKeyType == RTCRKEYTYPE_RSA_PUBLIC, VERR_CR_PKIX_NOT_RSA_PUBLIC_KEY);
+    }
+    else
+        AssertFailedReturn(VERR_INTERNAL_ERROR_3);
+    int rc = RTCrKeyVerifyParameterCompatibility(hKey, pParams, true /*fForSignature*/, NULL /*pAlgorithm*/, NULL /*pErrInfo*/);
+    if (RT_FAILURE(rc))
+        return rc;
+
+    /* 
+     * Locate the EVP_MD for the algorithm.
+     */
+    rtCrOpenSslInit();
+    int iAlgoNid = OBJ_txt2nid(pDesc->pszObjId);
+    if (iAlgoNid != NID_undef)
+    {
+        PRTCRPKIXSIGNATUREOSSLEVP pThis = (PRTCRPKIXSIGNATUREOSSLEVP)pvState;
+        pThis->fSigning = fSigning;
+        return VINF_SUCCESS;
+    }
+    return VERR_CR_PKIX_OSSL_CIPHER_ALGO_NOT_KNOWN_EVP;
+}
+
+
+/** @impl_interface_method{RTCRPKIXSIGNATUREDESC,pfnReset}  */
+static DECLCALLBACK(int) rtCrPkixSignatureOsslEvp_Reset(PCRTCRPKIXSIGNATUREDESC pDesc, void *pvState, bool fSigning)
+{
+    PRTCRPKIXSIGNATUREOSSLEVP pThis = (PRTCRPKIXSIGNATUREOSSLEVP)pvState;
+    RT_NOREF_PV(fSigning); RT_NOREF_PV(pDesc);
+    Assert(pThis->fSigning == fSigning); NOREF(pThis);
+    return VINF_SUCCESS;
+}
+
+
+/** @impl_interface_method{RTCRPKIXSIGNATUREDESC,pfnDelete}  */
+static DECLCALLBACK(void) rtCrPkixSignatureOsslEvp_Delete(PCRTCRPKIXSIGNATUREDESC pDesc, void *pvState, bool fSigning)
+{
+    PRTCRPKIXSIGNATUREOSSLEVP pThis = (PRTCRPKIXSIGNATUREOSSLEVP)pvState;
+    RT_NOREF_PV(fSigning); RT_NOREF_PV(pDesc);
+    Assert(pThis->fSigning == fSigning);
+    NOREF(pThis);
+}
+
+
+/** @impl_interface_method{RTCRPKIXSIGNATUREDESC,pfnVerify}  */
+static DECLCALLBACK(int) rtCrPkixSignatureOsslEvp_Verify(PCRTCRPKIXSIGNATUREDESC pDesc, void *pvState, RTCRKEY hKey,
+                                                         RTCRDIGEST hDigest, void const *pvSignature, size_t cbSignature)
+{
+    PRTCRPKIXSIGNATUREOSSLEVP pThis = (PRTCRPKIXSIGNATUREOSSLEVP)pvState;
+    Assert(!pThis->fSigning);
+    RT_NOREF_PV(pThis);
+
+#if 1
+    PRTERRINFO const pErrInfo = NULL;
+
+    /*
+     * Get the hash before we do anything that needs cleaning up.
+     */
+    int rc = RTCrDigestFinal(hDigest, NULL, 0);
+    AssertRCReturn(rc, rc);
+    uint8_t const * const pbDigest = RTCrDigestGetHash(hDigest);
+    AssertReturn(pbDigest, VERR_INTERNAL_ERROR_3);
+
+    uint32_t const      cbDigest = RTCrDigestGetHashSize(hDigest);
+    AssertReturn(cbDigest > 0 && cbDigest < _16K, VERR_INTERNAL_ERROR_4);
+
+    /*
+     * Combine the encryption and digest algorithms.
+     */
+    const char * const  pszDigestOid          = RTCrDigestGetAlgorithmOid(hDigest);
+    const char * const  pszEncryptedDigestOid
+        = RTCrX509AlgorithmIdentifier_CombineEncryptionOidAndDigestOid(pDesc->pszObjId, pszDigestOid);
+
+    /*
+     * Create an EVP public key from hKey and pszEncryptedDigestOid.
+     */
+    int const           iAlgoNid = OBJ_txt2nid(pszEncryptedDigestOid);
+    if (iAlgoNid == NID_undef)
+        return VERR_CR_PKIX_OSSL_CIPHER_ALGO_NOT_KNOWN_EVP;
+
+    /* Create an EVP public key. */
+    EVP_PKEY     *pEvpPublicKey = NULL;
+    const EVP_MD *pEvpMdType    = NULL;
+    rc = rtCrKeyToOpenSslKeyEx(hKey, true /*fNeedPublic*/, pszEncryptedDigestOid,
+                               (void **)&pEvpPublicKey, (const void **)&pEvpMdType, pErrInfo);
+    if (RT_SUCCESS(rc))
+    {
+        EVP_PKEY_CTX * const pEvpPublickKeyCtx = EVP_PKEY_CTX_new_from_pkey(NULL, pEvpPublicKey, NULL);
+        if (pEvpPublickKeyCtx)
+        {
+            rc = EVP_PKEY_verify_init(pEvpPublickKeyCtx);
+            if (rc > 0)
+            {
+                rc = EVP_PKEY_CTX_set_signature_md(pEvpPublickKeyCtx, pEvpMdType);
+                if (rc > 0)
+                {
+                    rc = EVP_PKEY_verify(pEvpPublickKeyCtx, (const unsigned char *)pvSignature, cbSignature, pbDigest, cbDigest);
+                    if (rc > 0)
+                        rc = VINF_SUCCESS;
+                    else
+                        rc = RTERRINFO_LOG_SET_F(pErrInfo, VERR_CR_PKIX_OSSL_VERIFY_FINAL_FAILED,
+                                                 "EVP_PKEY_verify failed (%d)", rc);
+                }
+                else
+                    rc = RTERRINFO_LOG_SET_F(pErrInfo, VERR_CR_PKIX_OSSL_CIPHER_ALOG_INIT_FAILED,
+                                             "EVP_PKEY_CTX_set_signature_md failed (%d)", rc);
+            }
+            else
+                rc = RTERRINFO_LOG_SET_F(pErrInfo, VERR_CR_PKIX_OSSL_CIPHER_ALOG_INIT_FAILED,
+                                         "EVP_PKEY_verify_init failed (%d)", rc);
+            EVP_PKEY_CTX_free(pEvpPublickKeyCtx);
+        }
+        else
+            rc = RTERRINFO_LOG_SET_F(pErrInfo, VERR_CR_PKIX_OSSL_CIPHER_ALOG_INIT_FAILED,
+                                     "EVP_PKEY_CTX_new_from_pkey failed (%d)", rc);
+        EVP_PKEY_free(pEvpPublicKey);
+    }
+    return rc;
+
+#else
+    RT_NOREF(pDesc, pvState, hKey, hDigest, pvSignature, cbSignature);
+    return VERR_NOT_IMPLEMENTED;
+#endif
+}
+
+
+/** @impl_interface_method{RTCRPKIXSIGNATUREDESC,pfnSign}  */
+static DECLCALLBACK(int) rtCrPkixSignatureOsslEvp_Sign(PCRTCRPKIXSIGNATUREDESC pDesc, void *pvState, RTCRKEY hKey,
+                                                       RTCRDIGEST hDigest, void *pvSignature, size_t *pcbSignature)
+{
+    PRTCRPKIXSIGNATUREOSSLEVP pThis = (PRTCRPKIXSIGNATUREOSSLEVP)pvState;
+    Assert(pThis->fSigning);
+    RT_NOREF(pThis, pDesc);
+
+#if 0
+    /*
+     * Get the key bits we need.
+     */
+    Assert(RTCrKeyGetType(hKey) == RTCRKEYTYPE_RSA_PRIVATE);
+    PRTBIGNUM pModulus  = &hKey->u.RsaPrivate.Modulus;
+    PRTBIGNUM pExponent = &hKey->u.RsaPrivate.PrivateExponent;
+
+    return rc;
+#else
+    RT_NOREF(pDesc, pvState, hKey, hDigest, pvSignature, pcbSignature);
+    return VERR_NOT_IMPLEMENTED;
+#endif
+}
+
+
+/** ECDSA alias ODIs. */
+static const char * const g_apszHashWithEcdsaAliases[] =
+{
+    RTCR_X962_ECDSA_WITH_SHA1_OID,
+    RTCR_X962_ECDSA_WITH_SHA2_OID,
+    RTCR_X962_ECDSA_WITH_SHA224_OID,
+    RTCR_X962_ECDSA_WITH_SHA256_OID,
+    RTCR_X962_ECDSA_WITH_SHA384_OID,
+    RTCR_X962_ECDSA_WITH_SHA512_OID,
+    RTCR_NIST_SHA3_224_WITH_ECDSA_OID,
+    RTCR_NIST_SHA3_256_WITH_ECDSA_OID,
+    RTCR_NIST_SHA3_384_WITH_ECDSA_OID,
+    RTCR_NIST_SHA3_512_WITH_ECDSA_OID,
+    NULL
+};
+
+
+/** ECDSA descriptor. */
+DECL_HIDDEN_CONST(RTCRPKIXSIGNATUREDESC const) g_rtCrPkixSigningHashWithEcdsaDesc =
+{
+    "ECDSA",
+    RTCR_X962_ECDSA_OID,
+    g_apszHashWithEcdsaAliases,
+    sizeof(RTCRPKIXSIGNATUREOSSLEVP),
+    0,
+    0,
+    rtCrPkixSignatureOsslEvp_Init,
+    rtCrPkixSignatureOsslEvp_Reset,
+    rtCrPkixSignatureOsslEvp_Delete,
+    rtCrPkixSignatureOsslEvp_Verify,
+    rtCrPkixSignatureOsslEvp_Sign,
+};
+#endif /* IPRT_WITH_OPENSSL */
+
