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-rw-r--r--src/VBox/Runtime/common/crypto/pkix-sign.cpp254
1 files changed, 254 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/crypto/pkix-sign.cpp b/src/VBox/Runtime/common/crypto/pkix-sign.cpp
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+++ b/src/VBox/Runtime/common/crypto/pkix-sign.cpp
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+/* $Id: pkix-sign.cpp $ */
+/** @file
+ * IPRT - Crypto - Public Key Infrastructure API, Verification.
+ */
+
+/*
+ * Copyright (C) 2006-2019 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE 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.
+ */
+
+
+/*********************************************************************************************************************************
+* Header Files *
+*********************************************************************************************************************************/
+#include "internal/iprt.h"
+#include <iprt/crypto/pkix.h>
+
+#include <iprt/alloca.h>
+#include <iprt/err.h>
+#include <iprt/mem.h>
+#include <iprt/string.h>
+#include <iprt/crypto/digest.h>
+#include <iprt/crypto/key.h>
+
+#ifdef IPRT_WITH_OPENSSL
+# include "internal/iprt-openssl.h"
+# include "openssl/evp.h"
+# include "openssl/rsa.h"
+# ifndef OPENSSL_VERSION_NUMBER
+# error "Missing OPENSSL_VERSION_NUMBER!"
+# endif
+#endif
+
+
+#if 0
+RTDECL(int) RTCrPkixPubKeySignData(PCRTASN1OBJID pAlgorithm, PCRTASN1DYNTYPE pParameters, PCRTASN1BITSTRING pPrivateKey,
+ PCRTASN1BITSTRING pSignatureValue, const void *pvData, size_t cbData, PRTERRINFO pErrInfo)
+{
+ /*
+ * Validate the digest related inputs.
+ */
+ AssertPtrReturn(pAlgorithm, VERR_INVALID_POINTER);
+ AssertReturn(RTAsn1ObjId_IsPresent(pAlgorithm), VERR_INVALID_POINTER);
+
+ AssertPtrReturn(pvData, VERR_INVALID_POINTER);
+ AssertReturn(cbData > 0, VERR_INVALID_PARAMETER);
+
+ /*
+ * Digest the data and call the other API.
+ */
+ RTCRDIGEST hDigest;
+ int rc = RTCrDigestCreateByObjId(&hDigest, pAlgorithm);
+ if (RT_SUCCESS(rcIprt))
+ {
+ rc = RTCrDigestUpdate(hDigest, pvData, cbData);
+ if (RT_SUCCESS(rcIprt))
+ rc = RTCrPkixPubKeySignDigest(pAlgorithm, pParameters, pPrivateKey, pvSignedDigest, cbSignedDigest, hDigest, pErrInfo);
+ else
+ RTErrInfoSet(pErrInfo, rcIprt, "RTCrDigestUpdate failed");
+ RTCrDigestRelease(hDigest);
+ }
+ else
+ RTErrInfoSetF(pErrInfo, rcIprt, "Unknown digest algorithm [IPRT]: %s", pAlgorithm->szObjId);
+ return rc;
+}
+#endif
+
+
+RTDECL(int) RTCrPkixPubKeySignDigest(PCRTASN1OBJID pAlgorithm, RTCRKEY hPrivateKey, PCRTASN1DYNTYPE pParameters,
+ RTCRDIGEST hDigest, uint32_t fFlags,
+ void *pvSignature, size_t *pcbSignature, PRTERRINFO pErrInfo)
+{
+ /*
+ * Valid input.
+ */
+ AssertPtrReturn(pAlgorithm, VERR_INVALID_POINTER);
+ AssertReturn(RTAsn1ObjId_IsPresent(pAlgorithm), VERR_INVALID_POINTER);
+
+ if (pParameters)
+ {
+ AssertPtrReturn(pParameters, VERR_INVALID_POINTER);
+ if (pParameters->enmType == RTASN1TYPE_NULL)
+ pParameters = NULL;
+ }
+
+ AssertPtrReturn(hPrivateKey, VERR_INVALID_POINTER);
+ Assert(RTCrKeyHasPrivatePart(hPrivateKey));
+
+ AssertPtrReturn(pcbSignature, VERR_INVALID_PARAMETER);
+ size_t cbSignature = *pcbSignature;
+ if (cbSignature)
+ AssertPtrReturn(pvSignature, VERR_INVALID_POINTER);
+ else
+ pvSignature = NULL;
+
+ AssertPtrReturn(hDigest, VERR_INVALID_HANDLE);
+
+ AssertReturn(fFlags == 0, VERR_INVALID_FLAGS);
+
+ /*
+ * Parameters are not currently supported (openssl code path).
+ */
+ if (pParameters)
+ return RTErrInfoSet(pErrInfo, VERR_CR_PKIX_CIPHER_ALGO_PARAMS_NOT_IMPL,
+ "Cipher algorithm parameters are not yet supported.");
+
+ /*
+ * Sign using IPRT.
+ */
+ RTCRPKIXSIGNATURE hSignature;
+ int rcIprt = RTCrPkixSignatureCreateByObjId(&hSignature, pAlgorithm, hPrivateKey, pParameters, true /*fSigning*/);
+ if (RT_FAILURE(rcIprt))
+ return RTErrInfoSetF(pErrInfo, VERR_CR_PKIX_CIPHER_ALGO_NOT_KNOWN,
+ "Unknown private key algorithm [IPRT]: %s", pAlgorithm->szObjId);
+
+ rcIprt = RTCrPkixSignatureSign(hSignature, hDigest, pvSignature, pcbSignature);
+ if (RT_FAILURE(rcIprt))
+ RTErrInfoSet(pErrInfo, rcIprt, "RTCrPkixSignatureSign failed");
+
+ RTCrPkixSignatureRelease(hSignature);
+
+ /*
+ * Sign using OpenSSL EVP if we can.
+ */
+#if defined(IPRT_WITH_OPENSSL) \
+ && (OPENSSL_VERSION_NUMBER > 0x10000000L) /* 0.9.8 doesn't seem to have EVP_PKEY_CTX_set_signature_md. */
+
+ /* Make sure the algorithm includes the digest and isn't just RSA. */
+ const char *pszAlgObjId = pAlgorithm->szObjId;
+ if (!strcmp(pszAlgObjId, RTCRX509ALGORITHMIDENTIFIERID_RSA))
+ {
+ pszAlgObjId = RTCrX509AlgorithmIdentifier_CombineEncryptionOidAndDigestOid(pszAlgObjId,
+ RTCrDigestGetAlgorithmOid(hDigest));
+ AssertMsgStmt(pszAlgObjId, ("enc=%s hash=%s\n", pAlgorithm->szObjId, RTCrDigestGetAlgorithmOid(hDigest)),
+ pszAlgObjId = RTCrDigestGetAlgorithmOid(hDigest));
+ }
+
+ /* Create an EVP private key. */
+ EVP_PKEY *pEvpPrivateKey = NULL;
+ const EVP_MD *pEvpMdType = NULL;
+ int rcOssl = rtCrKeyToOpenSslKey(hPrivateKey, false /*fNeedPublic*/, pszAlgObjId,
+ (void **)&pEvpPrivateKey, (const void **)&pEvpMdType, pErrInfo);
+ if (RT_SUCCESS(rcOssl))
+ {
+ /* Create an EVP Private key context we can use to validate the digest. */
+ EVP_PKEY_CTX *pEvpPKeyCtx = EVP_PKEY_CTX_new(pEvpPrivateKey, NULL);
+ if (pEvpPKeyCtx)
+ {
+ rcOssl = EVP_PKEY_sign_init(pEvpPKeyCtx);
+ if (rcOssl > 0)
+ {
+ rcOssl = EVP_PKEY_CTX_set_rsa_padding(pEvpPKeyCtx, RSA_PKCS1_PADDING);
+ if (rcOssl > 0)
+ {
+ rcOssl = EVP_PKEY_CTX_set_signature_md(pEvpPKeyCtx, pEvpMdType);
+ if (rcOssl > 0)
+ {
+ /* Allocate a signature buffer. */
+ unsigned char *pbOsslSignature = NULL;
+ void *pvOsslSignatureFree = NULL;
+ size_t cbOsslSignature = cbSignature;
+ if (cbOsslSignature > 0)
+ {
+ if (cbOsslSignature < _1K)
+ pbOsslSignature = (unsigned char *)alloca(cbOsslSignature);
+ else
+ {
+ pbOsslSignature = (unsigned char *)RTMemTmpAlloc(cbOsslSignature);
+ pvOsslSignatureFree = pbOsslSignature;
+ }
+ }
+ if (cbOsslSignature == 0 || pbOsslSignature != NULL)
+ {
+ /* Get the digest from hDigest and sign it. */
+ rcOssl = EVP_PKEY_sign(pEvpPKeyCtx,
+ pbOsslSignature,
+ &cbOsslSignature,
+ (const unsigned char *)RTCrDigestGetHash(hDigest),
+ RTCrDigestGetHashSize(hDigest));
+ if (rcOssl > 0)
+ {
+ /* Compare the result. The memcmp assums no random padding bits. */
+ rcOssl = VINF_SUCCESS;
+ AssertMsgStmt(cbOsslSignature == *pcbSignature,
+ ("cbOsslSignature=%#x, iprt %#x\n", cbOsslSignature, *pcbSignature),
+ rcOssl = VERR_CR_PKIX_OSSL_VS_IPRT_SIGNATURE_SIZE);
+ AssertMsgStmt( pbOsslSignature == NULL
+ || rcOssl != VINF_SUCCESS
+ || memcmp(pbOsslSignature, pvSignature, cbOsslSignature) == 0,
+ ("OpenSSL: %.*Rhxs\n"
+ "IPRT: %.*Rhxs\n",
+ cbOsslSignature, pbOsslSignature, *pcbSignature, pvSignature),
+ rcOssl = VERR_CR_PKIX_OSSL_VS_IPRT_SIGNATURE);
+ if (!pbOsslSignature && rcOssl == VINF_SUCCESS)
+ rcOssl = VERR_BUFFER_OVERFLOW;
+ }
+ else
+ rcOssl = RTErrInfoSetF(pErrInfo, VERR_CR_PKIX_OSSL_SIGN_FINAL_FAILED,
+ "EVP_PKEY_sign failed (%d)", rcOssl);
+ if (pvOsslSignatureFree)
+ RTMemTmpFree(pvOsslSignatureFree);
+ }
+ else
+ rcOssl = VERR_NO_TMP_MEMORY;
+ }
+ else
+ rcOssl = RTErrInfoSetF(pErrInfo, VERR_CR_PKIX_OSSL_EVP_PKEY_TYPE_ERROR,
+ "EVP_PKEY_CTX_set_signature_md failed (%d)", rcOssl);
+ }
+ else
+ rcOssl = RTErrInfoSetF(pErrInfo, VERR_CR_PKIX_OSSL_EVP_PKEY_RSA_PAD_ERROR,
+ "EVP_PKEY_CTX_set_rsa_padding failed (%d)", rcOssl);
+ }
+ else
+ rcOssl = RTErrInfoSetF(pErrInfo, VERR_CR_PKIX_OSSL_EVP_PKEY_TYPE_ERROR,
+ "EVP_PKEY_verify_init failed (%d)", rcOssl);
+ EVP_PKEY_CTX_free(pEvpPKeyCtx);
+ }
+ else
+ rcOssl = RTErrInfoSet(pErrInfo, VERR_CR_PKIX_OSSL_EVP_PKEY_TYPE_ERROR, "EVP_PKEY_CTX_new failed");
+ EVP_PKEY_free(pEvpPrivateKey);
+ }
+
+ /*
+ * Check the result.
+ */
+ if ( (RT_SUCCESS(rcIprt) && RT_SUCCESS(rcOssl))
+ || (RT_FAILURE_NP(rcIprt) && RT_FAILURE_NP(rcOssl))
+ || (RT_SUCCESS(rcIprt) && rcOssl == VERR_CR_PKIX_OSSL_CIPHER_ALGO_NOT_KNOWN_EVP) )
+ return rcIprt;
+ AssertMsgFailed(("rcIprt=%Rrc rcOssl=%Rrc\n", rcIprt, rcOssl));
+ if (RT_FAILURE_NP(rcOssl))
+ return rcOssl;
+#endif /* IPRT_WITH_OPENSSL */
+
+ return rcIprt;
+}
+
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