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| -rw-r--r-- | include/iprt/crypto/pkcs7.h | 591 |
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diff --git a/include/iprt/crypto/pkcs7.h b/include/iprt/crypto/pkcs7.h new file mode 100644 index 00000000..1fc559c4 --- /dev/null +++ b/include/iprt/crypto/pkcs7.h @@ -0,0 +1,591 @@ +/** @file + * IPRT - PKCS \#7, Cryptographic Message Syntax Standard (aka CMS). + */ + +/* + * Copyright (C) 2006-2020 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. + */ + +#ifndef IPRT_INCLUDED_crypto_pkcs7_h +#define IPRT_INCLUDED_crypto_pkcs7_h +#ifndef RT_WITHOUT_PRAGMA_ONCE +# pragma once +#endif + +#include <iprt/asn1.h> +#include <iprt/crypto/x509.h> + + +RT_C_DECLS_BEGIN + +struct RTCRPKCS7CONTENTINFO; + + +/** @defgroup grp_rt_crpkcs7 RTCrPkcs7 - PKCS \#7, Cryptographic Message Syntax Standard (aka CMS). + * @ingroup grp_rt_crypto + * @{ + */ + +/** PKCS \#7 data object ID.*/ +#define RTCR_PKCS7_DATA_OID "1.2.840.113549.1.7.1" +/** PKCS \#7 signedData object ID. */ +#define RTCR_PKCS7_SIGNED_DATA_OID "1.2.840.113549.1.7.2" +/** PKCS \#7 envelopedData object ID. */ +#define RTCR_PKCS7_ENVELOPED_DATA_OID "1.2.840.113549.1.7.3" +/** PKCS \#7 signedAndEnvelopedData object ID. */ +#define RTCR_PKCS7_SIGNED_AND_ENVELOPED_DATA_OID "1.2.840.113549.1.7.4" +/** PKCS \#7 digestedData object ID. */ +#define RTCR_PKCS7_DIGESTED_DATA_OID "1.2.840.113549.1.7.5" +/** PKCS \#7 encryptedData object ID. */ +#define RTCR_PKCS7_ENCRYPTED_DATA_OID "1.2.840.113549.1.7.6" + + +/** + * PKCS \#7 IssuerAndSerialNumber (IPRT representation). + */ +typedef struct RTCRPKCS7ISSUERANDSERIALNUMBER +{ + /** Sequence core. */ + RTASN1SEQUENCECORE SeqCore; + /** The certificate name. */ + RTCRX509NAME Name; + /** The certificate serial number. */ + RTASN1INTEGER SerialNumber; +} RTCRPKCS7ISSUERANDSERIALNUMBER; +/** Pointer to the IPRT representation of a PKCS \#7 IssuerAndSerialNumber. */ +typedef RTCRPKCS7ISSUERANDSERIALNUMBER *PRTCRPKCS7ISSUERANDSERIALNUMBER; +/** Pointer to the const IPRT representation of a PKCS \#7 + * IssuerAndSerialNumber. */ +typedef RTCRPKCS7ISSUERANDSERIALNUMBER const *PCRTCRPKCS7ISSUERANDSERIALNUMBER; +RTASN1TYPE_STANDARD_PROTOTYPES(RTCRPKCS7ISSUERANDSERIALNUMBER, RTDECL, RTCrPkcs7IssuerAndSerialNumber, SeqCore.Asn1Core); + + +/** Pointer to the IPRT representation of a PKCS \#7 SignerInfo. */ +typedef struct RTCRPKCS7SIGNERINFO *PRTCRPKCS7SIGNERINFO; +/** Pointer to the const IPRT representation of a PKCS \#7 SignerInfo. */ +typedef struct RTCRPKCS7SIGNERINFO const *PCRTCRPKCS7SIGNERINFO; +RTASN1_IMPL_GEN_SET_OF_TYPEDEFS_AND_PROTOS(RTCRPKCS7SIGNERINFOS, RTCRPKCS7SIGNERINFO, RTDECL, RTCrPkcs7SignerInfos); + + +/** + * Attribute value type (for the union). + */ +typedef enum RTCRPKCS7ATTRIBUTETYPE +{ + /** Zero is invalid. */ + RTCRPKCS7ATTRIBUTETYPE_INVALID = 0, + /** Not present, union is NULL. */ + RTCRPKCS7ATTRIBUTETYPE_NOT_PRESENT, + /** Unknown values, pCores. */ + RTCRPKCS7ATTRIBUTETYPE_UNKNOWN, + /** Object IDs, use pObjIds. */ + RTCRPKCS7ATTRIBUTETYPE_OBJ_IDS, + /** Octet strings, use pOctetStrings. */ + RTCRPKCS7ATTRIBUTETYPE_OCTET_STRINGS, + /** Counter signatures (PKCS \#9), use pCounterSignatures. */ + RTCRPKCS7ATTRIBUTETYPE_COUNTER_SIGNATURES, + /** Signing time (PKCS \#9), use pSigningTime. */ + RTCRPKCS7ATTRIBUTETYPE_SIGNING_TIME, + /** Microsoft timestamp info (RFC-3161) signed data, use pContentInfo. */ + RTCRPKCS7ATTRIBUTETYPE_MS_TIMESTAMP, + /** Microsoft nested PKCS\#7 signature (signtool /as). */ + RTCRPKCS7ATTRIBUTETYPE_MS_NESTED_SIGNATURE, + /** Microsoft statement type, use pObjIdSeqs. */ + RTCRPKCS7ATTRIBUTETYPE_MS_STATEMENT_TYPE, + /** Apple plist with the all code directory digests, use pOctetStrings. */ + RTCRPKCS7ATTRIBUTETYPE_APPLE_MULTI_CD_PLIST, + /** Blow the type up to 32-bits. */ + RTCRPKCS7ATTRIBUTETYPE_32BIT_HACK = 0x7fffffff +} RTCRPKCS7ATTRIBUTETYPE; + +/** + * PKCS \#7 Attribute (IPRT representation). + */ +typedef struct RTCRPKCS7ATTRIBUTE +{ + /** Sequence core. */ + RTASN1SEQUENCECORE SeqCore; + /** The attribute type (object ID). */ + RTASN1OBJID Type; + /** The type of data found in the values union. */ + RTCRPKCS7ATTRIBUTETYPE enmType; + /** Value allocation. */ + RTASN1ALLOCATION Allocation; + /** Values. */ + union + { + /** ASN.1 cores (RTCRPKCS7ATTRIBUTETYPE_UNKNOWN). */ + PRTASN1SETOFCORES pCores; + /** ASN.1 object identifiers (RTCRPKCS7ATTRIBUTETYPE_OBJ_IDS). */ + PRTASN1SETOFOBJIDS pObjIds; + /** Sequence of ASN.1 object identifiers (RTCRPKCS7ATTRIBUTETYPE_MS_STATEMENT_TYPE). */ + PRTASN1SETOFOBJIDSEQS pObjIdSeqs; + /** ASN.1 octet strings (RTCRPKCS7ATTRIBUTETYPE_OCTET_STRINGS). */ + PRTASN1SETOFOCTETSTRINGS pOctetStrings; + /** Counter signatures RTCRPKCS7ATTRIBUTETYPE_COUNTER_SIGNATURES(). */ + PRTCRPKCS7SIGNERINFOS pCounterSignatures; + /** Signing time(s) (RTCRPKCS7ATTRIBUTETYPE_SIGNING_TIME). */ + PRTASN1SETOFTIMES pSigningTime; + /** Microsoft timestamp (RFC-3161 signed data, RTCRPKCS7ATTRIBUTETYPE_MS_TIMESTAMP), + * Microsoft nested signature (RTCRPKCS7ATTRIBUTETYPE_MS_NESTED_SIGNATURE). */ + struct RTCRPKCS7SETOFCONTENTINFOS *pContentInfos; + } uValues; +} RTCRPKCS7ATTRIBUTE; +/** Pointer to the IPRT representation of a PKCS \#7 Attribute. */ +typedef RTCRPKCS7ATTRIBUTE *PRTCRPKCS7ATTRIBUTE; +/** Pointer to the const IPRT representation of a PKCS \#7 Attribute. */ +typedef RTCRPKCS7ATTRIBUTE const *PCRTCRPKCS7ATTRIBUTE; +RTASN1TYPE_STANDARD_PROTOTYPES(RTCRPKCS7ATTRIBUTE, RTDECL, RTCrPkcs7Attribute, SeqCore.Asn1Core); + +RTASN1_IMPL_GEN_SET_OF_TYPEDEFS_AND_PROTOS(RTCRPKCS7ATTRIBUTES, RTCRPKCS7ATTRIBUTE, RTDECL, RTCrPkcs7Attributes); + + +/** + * One PKCS \#7 SignerInfo (IPRT representation). + */ +typedef struct RTCRPKCS7SIGNERINFO +{ + /** Sequence core. */ + RTASN1SEQUENCECORE SeqCore; + /** The structure version (RTCRPKCS7SIGNERINFO_V1). */ + RTASN1INTEGER Version; + /** The issuer and serial number of the certificate used to produce the + * encrypted digest below. */ + RTCRPKCS7ISSUERANDSERIALNUMBER IssuerAndSerialNumber; + /** The digest algorithm use to digest the signed content. */ + RTCRX509ALGORITHMIDENTIFIER DigestAlgorithm; + /** Authenticated attributes, optional [0]. + * @todo Check how other producers formats this. The microsoft one does not + * have explicit tags, but combines it with the SET OF. */ + RTCRPKCS7ATTRIBUTES AuthenticatedAttributes; + /** The digest encryption algorithm use to encrypt the digest of the signed + * content. */ + RTCRX509ALGORITHMIDENTIFIER DigestEncryptionAlgorithm; + /** The encrypted digest. */ + RTASN1OCTETSTRING EncryptedDigest; + /** Unauthenticated attributes, optional [1]. + * @todo Check how other producers formats this. The microsoft one does not + * have explicit tags, but combines it with the SET OF. */ + RTCRPKCS7ATTRIBUTES UnauthenticatedAttributes; +} RTCRPKCS7SIGNERINFO; +RTASN1TYPE_STANDARD_PROTOTYPES(RTCRPKCS7SIGNERINFO, RTDECL, RTCrPkcs7SignerInfo, SeqCore.Asn1Core); + +/** RTCRPKCS7SIGNERINFO::Version value. */ +#define RTCRPKCS7SIGNERINFO_V1 1 + +/** @name PKCS \#9 Attribute IDs + * @{ */ +/** Content type (RFC-2630 11.1). + * Value: Object Identifier */ +#define RTCR_PKCS9_ID_CONTENT_TYPE_OID "1.2.840.113549.1.9.3" +/** Message digest (RFC-2630 11.2). + * Value: Octet string. */ +#define RTCR_PKCS9_ID_MESSAGE_DIGEST_OID "1.2.840.113549.1.9.4" +/** Signing time (RFC-2630 11.3). + * Value: Octet string. */ +#define RTCR_PKCS9_ID_SIGNING_TIME_OID "1.2.840.113549.1.9.5" +/** Counter signature (RFC-2630 11.4). + * Value: SignerInfo. */ +#define RTCR_PKCS9_ID_COUNTER_SIGNATURE_OID "1.2.840.113549.1.9.6" +/** Microsoft timestamp (RTF-3161) counter signature (SignedData). + * @remarks This isn't defined by PKCS \#9, but lumped in here for convenience. It's actually listed as SPC by MS. */ +#define RTCR_PKCS9_ID_MS_TIMESTAMP "1.3.6.1.4.1.311.3.3.1" +/** Microsoft nested PKCS\#7 signature. + * @remarks This isn't defined by PKCS \#9, but lumped in here for convenience. */ +#define RTCR_PKCS9_ID_MS_NESTED_SIGNATURE "1.3.6.1.4.1.311.2.4.1" +/** Microsoft statement type. + * @remarks This isn't defined by PKCS \#9, but lumped in here for convenience. It's actually listed as SPC by MS. */ +#define RTCR_PKCS9_ID_MS_STATEMENT_TYPE "1.3.6.1.4.1.311.2.1.11" +/** Microsoft opus info. + * @remarks This isn't defined by PKCS \#9, but lumped in here for convenience. It's actually listed as SPC by MS. */ +#define RTCR_PKCS9_ID_MS_SP_OPUS_INFO "1.3.6.1.4.1.311.2.1.12" +/** Apple code signing multi-code-directory plist. + * @remarks This isn't defined by PKCS \#9, but lumped in here for convenience. */ +#define RTCR_PKCS9_ID_APPLE_MULTI_CD_PLIST "1.2.840.113635.100.9.1" +/** @} */ + + +/** + * Get the (next) signing time attribute from the specfied SignerInfo or one of + * the immediate counter signatures. + * + * @returns Pointer to the signing time if found, NULL if not. + * @param pThis The SignerInfo to search. + * @param ppSignerInfo Pointer to variable keeping track of the + * enumeration, optional. + * + * If specified the input value is taken to the be + * SignerInfo of the previously returned signing + * time. The value pointed to is NULL, the + * search/enum restarts. + * + * On successful return this is set to the + * SignerInfo which we found the signing time in. + */ +RTDECL(PCRTASN1TIME) RTCrPkcs7SignerInfo_GetSigningTime(PCRTCRPKCS7SIGNERINFO pThis, PCRTCRPKCS7SIGNERINFO *ppSignerInfo); + + +/** + * Get the (first) timestamp from within a Microsoft timestamp server counter + * signature. + * + * @returns Pointer to the signing time if found, NULL if not. + * @param pThis The SignerInfo to search. + * @param ppContentInfoRet Where to return the pointer to the counter + * signature, optional. + */ +RTDECL(PCRTASN1TIME) RTCrPkcs7SignerInfo_GetMsTimestamp(PCRTCRPKCS7SIGNERINFO pThis, + struct RTCRPKCS7CONTENTINFO const **ppContentInfoRet); + + + +/** + * PKCS \#7 ContentInfo (IPRT representation). + */ +typedef struct RTCRPKCS7CONTENTINFO +{ + /** Sequence core. */ + RTASN1SEQUENCECORE SeqCore; + /** Object ID identifying the content below. */ + RTASN1OBJID ContentType; + /** Content, optional, explicit tag 0. + * + * Hack alert! This should've been an explict context tag 0 structure with a + * type selected according to ContentType. However, it's simpler to replace the + * explicit context with an OCTET STRING with implict tag 0. Then we can tag + * along on the encapsulation logic RTASN1OCTETSTRING provides for the dynamic + * inner type. The default decoder code will detect known structures as + * outlined in the union below, and decode the octet string content as an + * anonymous RTASN1CORE if not known. + * + * If the user want to decode the octet string content differently, it can do so + * by destroying and freeing the current encapsulated pointer, replacing it with + * it's own. (Of course following the RTASN1OCTETSTRING rules.) Just remember + * to also update the value in the union. + * + * @remarks What's signed and verified is Content.pEncapsulated->uData.pv. + */ + RTASN1OCTETSTRING Content; + /** Pointer to the CMS octet string that's inside the Content, NULL if PKCS \#7. + * + * Hack alert! When transitioning from PKCS \#7 to CMS, the designers decided to + * change things and add another wrapper. This time we're talking about a real + * octet string, not like the one above which is really an explicit content tag. + * When constructing or decoding CMS content, this will be the same pointer as + * Content.pEncapsulated, while the union below will be holding the same pointer + * as pCmsContent->pEncapsulated. + */ + PRTASN1OCTETSTRING pCmsContent; + /** Same as Content.pEncapsulated, except a choice of known types. */ + union + { + /** ContentType is RTCRPKCS7SIGNEDDATA_OID. */ + struct RTCRPKCS7SIGNEDDATA *pSignedData; + /** ContentType is RTCRSPCINDIRECTDATACONTENT_OID. */ + struct RTCRSPCINDIRECTDATACONTENT *pIndirectDataContent; + /** ContentType is RTCRTSPTSTINFO_OID. */ + struct RTCRTSPTSTINFO *pTstInfo; + /** Generic / Unknown / User. */ + PRTASN1CORE pCore; + } u; +} RTCRPKCS7CONTENTINFO; +/** Pointer to the IPRT representation of a PKCS \#7 ContentInfo. */ +typedef RTCRPKCS7CONTENTINFO *PRTCRPKCS7CONTENTINFO; +/** Pointer to the const IPRT representation of a PKCS \#7 ContentInfo. */ +typedef RTCRPKCS7CONTENTINFO const *PCRTCRPKCS7CONTENTINFO; +RTASN1TYPE_STANDARD_PROTOTYPES(RTCRPKCS7CONTENTINFO, RTDECL, RTCrPkcs7ContentInfo, SeqCore.Asn1Core); +RTASN1_IMPL_GEN_SET_OF_TYPEDEFS_AND_PROTOS(RTCRPKCS7SETOFCONTENTINFOS, RTCRPKCS7CONTENTINFO, RTDECL, RTCrPkcs7SetOfContentInfos); + +RTDECL(bool) RTCrPkcs7ContentInfo_IsSignedData(PCRTCRPKCS7CONTENTINFO pThis); + + +/** + * PKCS \#7 Certificate choice. + */ +typedef enum RTCRPKCS7CERTCHOICE +{ + RTCRPKCS7CERTCHOICE_INVALID = 0, + RTCRPKCS7CERTCHOICE_X509, + RTCRPKCS7CERTCHOICE_EXTENDED_PKCS6, + RTCRPKCS7CERTCHOICE_AC_V1, + RTCRPKCS7CERTCHOICE_AC_V2, + RTCRPKCS7CERTCHOICE_OTHER, + RTCRPKCS7CERTCHOICE_END, + RTCRPKCS7CERTCHOICE_32BIT_HACK = 0x7fffffff +} RTCRPKCS7CERTCHOICE; + + +/** + * Common representation for PKCS \#7 ExtendedCertificateOrCertificate and the + * CMS CertificateChoices types. + */ +typedef struct RTCRPKCS7CERT +{ + /** Dummy ASN.1 record, not encoded. */ + RTASN1DUMMY Dummy; + /** The value allocation. */ + RTASN1ALLOCATION Allocation; + /** The choice of value. */ + RTCRPKCS7CERTCHOICE enmChoice; + /** The value union. */ + union + { + /** Standard X.509 certificate (RTCRCMSCERTIFICATECHOICE_X509). */ + PRTCRX509CERTIFICATE pX509Cert; + /** Extended PKCS \#6 certificate (RTCRCMSCERTIFICATECHOICE_EXTENDED_PKCS6). */ + PRTASN1CORE pExtendedCert; + /** Attribute certificate version 1 (RTCRCMSCERTIFICATECHOICE_AC_V1). */ + PRTASN1CORE pAcV1; + /** Attribute certificate version 2 (RTCRCMSCERTIFICATECHOICE_AC_V2). */ + PRTASN1CORE pAcV2; + /** Other certificate (RTCRCMSCERTIFICATECHOICE_OTHER). */ + PRTASN1CORE pOtherCert; + } u; +} RTCRPKCS7CERT; +/** Pointer to the IPRT representation of PKCS \#7 or CMS certificate. */ +typedef RTCRPKCS7CERT *PRTCRPKCS7CERT; +/** Pointer to the const IPRT representation of PKCS \#7 or CMS certificate. */ +typedef RTCRPKCS7CERT const *PCRTCRPKCS7CERT; +RTASN1TYPE_STANDARD_PROTOTYPES(RTCRPKCS7CERT, RTDECL, RTCrPkcs7Cert, Dummy.Asn1Core); +RTASN1_IMPL_GEN_SET_OF_TYPEDEFS_AND_PROTOS(RTCRPKCS7SETOFCERTS, RTCRPKCS7CERT, RTDECL, RTCrPkcs7SetOfCerts); + +RTDECL(PCRTCRX509CERTIFICATE) RTCrPkcs7SetOfCerts_FindX509ByIssuerAndSerialNumber(PCRTCRPKCS7SETOFCERTS pCertificates, + PCRTCRX509NAME pIssuer, + PCRTASN1INTEGER pSerialNumber); + + +/** + * PKCS \#7 SignedData (IPRT representation). + */ +typedef struct RTCRPKCS7SIGNEDDATA +{ + /** Sequence core. */ + RTASN1SEQUENCECORE SeqCore; + /** The structure version value (1). */ + RTASN1INTEGER Version; + /** The digest algorithms that are used to signed the content (ContentInfo). */ + RTCRX509ALGORITHMIDENTIFIERS DigestAlgorithms; + /** The content that's being signed. */ + RTCRPKCS7CONTENTINFO ContentInfo; + /** Certificates, optional, implicit tag 0. (Required by Authenticode.) */ + RTCRPKCS7SETOFCERTS Certificates; + /** Certificate revocation lists, optional, implicit tag 1. + * Not used by Authenticode, so currently stubbed. */ + RTASN1CORE Crls; + /** Signer infos. */ + RTCRPKCS7SIGNERINFOS SignerInfos; +} RTCRPKCS7SIGNEDDATA; +/** Pointer to the IPRT representation of a PKCS \#7 SignedData. */ +typedef RTCRPKCS7SIGNEDDATA *PRTCRPKCS7SIGNEDDATA; +/** Pointer to the const IPRT representation of a PKCS \#7 SignedData. */ +typedef RTCRPKCS7SIGNEDDATA const *PCRTCRPKCS7SIGNEDDATA; +RTASN1TYPE_STANDARD_PROTOTYPES(RTCRPKCS7SIGNEDDATA, RTDECL, RTCrPkcs7SignedData, SeqCore.Asn1Core); +RTASN1_IMPL_GEN_SET_OF_TYPEDEFS_AND_PROTOS(RTCRPKCS7SETOFSIGNEDDATA, RTCRPKCS7SIGNEDDATA, RTDECL, RTCrPkcs7SetOfSignedData); + +/** PKCS \#7 SignedData object ID. */ +#define RTCRPKCS7SIGNEDDATA_OID RTCR_PKCS7_SIGNED_DATA_OID + +/** PKCS \#7 SignedData version number 1. */ +#define RTCRPKCS7SIGNEDDATA_V1 1 +/* No version 2 seems to exist. */ +/** CMS SignedData version number 3. + * This should only be used if there are version 1 attribute certificates + * present, or if there are version 3 SignerInfo items present, or if + * enmcCountInfo is not id-data (RFC-5652, section 5.1). */ +#define RTCRPKCS7SIGNEDDATA_V3 3 +/** CMS SignedData version number 4. + * This should only be used if there are version 2 attribute certificates + * present (RFC-5652, section 5.1). */ +#define RTCRPKCS7SIGNEDDATA_V4 4 +/** CMS SignedData version number 5. + * This should only be used if there are certificates or/and CRLs of the + * OTHER type present (RFC-5652, section 5.1). */ +#define RTCRPKCS7SIGNEDDATA_V5 5 + + +/** @name RTCRPKCS7SIGNEDDATA_SANITY_F_XXX - Flags for RTPkcs7SignedDataCheckSantiy. + * @{ */ +/** Check for authenticode restrictions. */ +#define RTCRPKCS7SIGNEDDATA_SANITY_F_AUTHENTICODE RT_BIT_32(0) +/** Check that all the hash algorithms are known to IPRT. */ +#define RTCRPKCS7SIGNEDDATA_SANITY_F_ONLY_KNOWN_HASH RT_BIT_32(1) +/** Require signing certificate to be present. */ +#define RTCRPKCS7SIGNEDDATA_SANITY_F_SIGNING_CERT_PRESENT RT_BIT_32(2) +/** @} */ + + +/** + * PKCS \#7 DigestInfo (IPRT representation). + */ +typedef struct RTCRPKCS7DIGESTINFO +{ + /** Sequence core. */ + RTASN1SEQUENCECORE SeqCore; + /** The digest algorithm use to digest the signed content. */ + RTCRX509ALGORITHMIDENTIFIER DigestAlgorithm; + /** The digest. */ + RTASN1OCTETSTRING Digest; +} RTCRPKCS7DIGESTINFO; +/** Pointer to the IPRT representation of a PKCS \#7 DigestInfo object. */ +typedef RTCRPKCS7DIGESTINFO *PRTCRPKCS7DIGESTINFO; +/** Pointer to the const IPRT representation of a PKCS \#7 DigestInfo object. */ +typedef RTCRPKCS7DIGESTINFO const *PCRTCRPKCS7DIGESTINFO; +RTASN1TYPE_STANDARD_PROTOTYPES(RTCRPKCS7DIGESTINFO, RTDECL, RTCrPkcs7DigestInfo, SeqCore.Asn1Core); + + +/** + * Callback function for use with RTCrPkcs7VerifySignedData. + * + * @returns IPRT status code. + * @param pCert The certificate to verify. + * @param hCertPaths Unless the certificate is trusted directly, this + * is a reference to the certificate path builder + * and verifier instance that we used to establish + * at least valid trusted path to @a pCert. The + * callback can use this to enforce additional + * certificate lineage requirements, effective + * policy checks and whatnot. + * This is NIL_RTCRX509CERTPATHS if the certificate + * is directly trusted. + * @param fFlags Mix of the RTCRPKCS7VCC_F_XXX flags. + * @param pvUser The user argument. + * @param pErrInfo Optional error info buffer. + */ +typedef DECLCALLBACK(int) FNRTCRPKCS7VERIFYCERTCALLBACK(PCRTCRX509CERTIFICATE pCert, RTCRX509CERTPATHS hCertPaths, + uint32_t fFlags, void *pvUser, PRTERRINFO pErrInfo); +/** Pointer to a FNRTCRPKCS7VERIFYCERTCALLBACK callback. */ +typedef FNRTCRPKCS7VERIFYCERTCALLBACK *PFNRTCRPKCS7VERIFYCERTCALLBACK; + +/** @name RTCRPKCS7VCC_F_XXX - Flags for FNRTCRPKCS7VERIFYCERTCALLBACK. + * @{ */ +/** Normal callback for a direct signatory of the signed data. */ +#define RTCRPKCS7VCC_F_SIGNED_DATA RT_BIT_32(0) +/** Check that the signatory can be trusted for timestamps. */ +#define RTCRPKCS7VCC_F_TIMESTAMP RT_BIT_32(1) +/** @} */ + +/** + * @callback_method_impl{FNRTCRPKCS7VERIFYCERTCALLBACK, + * Default implementation that checks for the DigitalSignature KeyUsage bit.} + */ +RTDECL(int) RTCrPkcs7VerifyCertCallbackDefault(PCRTCRX509CERTIFICATE pCert, RTCRX509CERTPATHS hCertPaths, uint32_t fFlags, + void *pvUser, PRTERRINFO pErrInfo); + +/** + * @callback_method_impl{FNRTCRPKCS7VERIFYCERTCALLBACK, + * Standard code signing. Use this for Microsoft SPC.} + */ +RTDECL(int) RTCrPkcs7VerifyCertCallbackCodeSigning(PCRTCRX509CERTIFICATE pCert, RTCRX509CERTPATHS hCertPaths, uint32_t fFlags, + void *pvUser, PRTERRINFO pErrInfo); + +/** + * Verifies PKCS \#7 SignedData. + * + * For compatability with alternative crypto providers, the user must work on + * the top level PKCS \#7 structure instead directly on the SignedData. + * + * @returns IPRT status code. + * @param pContentInfo PKCS \#7 content info structure. + * @param fFlags RTCRPKCS7VERIFY_SD_F_XXX. + * @param hAdditionalCerts Store containing additional certificates to + * supplement those mentioned in the signed data. + * @param hTrustedCerts Store containing trusted certificates. + * @param pValidationTime The time we're supposed to validate the + * certificates chains at. Ignored for signatures + * with valid signing time attributes. + * @param pfnVerifyCert Callback for checking that a certificate used + * for signing the data is suitable. + * @param pvUser User argument for the callback. + * @param pErrInfo Optional error info buffer. + * @sa RTCrPkcs7VerifySignedDataWithExternalData + */ +RTDECL(int) RTCrPkcs7VerifySignedData(PCRTCRPKCS7CONTENTINFO pContentInfo, uint32_t fFlags, + RTCRSTORE hAdditionalCerts, RTCRSTORE hTrustedCerts, + PCRTTIMESPEC pValidationTime, PFNRTCRPKCS7VERIFYCERTCALLBACK pfnVerifyCert, void *pvUser, + PRTERRINFO pErrInfo); + + +/** + * Verifies PKCS \#7 SignedData with external data. + * + * For compatability with alternative crypto providers, the user must work on + * the top level PKCS \#7 structure instead directly on the SignedData. + * + * @returns IPRT status code. + * @param pContentInfo PKCS \#7 content info structure. + * @param fFlags RTCRPKCS7VERIFY_SD_F_XXX. + * @param hAdditionalCerts Store containing additional certificates to + * supplement those mentioned in the signed data. + * @param hTrustedCerts Store containing trusted certificates. + * @param pValidationTime The time we're supposed to validate the + * certificates chains at. Ignored for signatures + * with valid signing time attributes. + * @param pfnVerifyCert Callback for checking that a certificate used + * for signing the data is suitable. + * @param pvUser User argument for the callback. + * @param pvData The signed external data. + * @param cbData The size of the signed external data. + * @param pErrInfo Optional error info buffer. + * @sa RTCrPkcs7VerifySignedData + */ +RTDECL(int) RTCrPkcs7VerifySignedDataWithExternalData(PCRTCRPKCS7CONTENTINFO pContentInfo, uint32_t fFlags, + RTCRSTORE hAdditionalCerts, RTCRSTORE hTrustedCerts, + PCRTTIMESPEC pValidationTime, + PFNRTCRPKCS7VERIFYCERTCALLBACK pfnVerifyCert, void *pvUser, + void const *pvData, size_t cbData, PRTERRINFO pErrInfo); + +/** @name RTCRPKCS7VERIFY_SD_F_XXX - Flags for RTCrPkcs7VerifySignedData + * @{ */ +/** Always use the signing time attribute if present, requiring it to be + * verified as valid. The default behavior is to ignore unverifiable + * signing time attributes and use the @a pValidationTime instead. */ +#define RTCRPKCS7VERIFY_SD_F_ALWAYS_USE_SIGNING_TIME_IF_PRESENT RT_BIT_32(0) +/** Same as RTCRPKCS7VERIFY_SD_F_ALWAYS_USE_SIGNING_TIME_IF_PRESENT for the MS + * timestamp counter sigantures. */ +#define RTCRPKCS7VERIFY_SD_F_ALWAYS_USE_MS_TIMESTAMP_IF_PRESENT RT_BIT_32(1) +/** Only use signging time attributes from counter signatures. */ +#define RTCRPKCS7VERIFY_SD_F_COUNTER_SIGNATURE_SIGNING_TIME_ONLY RT_BIT_32(2) +/** Don't validate the counter signature containing the signing time, just use + * it unverified. This is useful if we don't necessarily have the root + * certificates for the timestamp server handy, but use with great care. + * @sa RTCRPKCS7VERIFY_SD_F_USE_MS_TIMESTAMP_UNVERIFIED */ +#define RTCRPKCS7VERIFY_SD_F_USE_SIGNING_TIME_UNVERIFIED RT_BIT_32(3) +/** Don't validate the MS counter signature containing the signing timestamp. + * @sa RTCRPKCS7VERIFY_SD_F_USE_SIGNING_TIME_UNVERIFIED */ +#define RTCRPKCS7VERIFY_SD_F_USE_MS_TIMESTAMP_UNVERIFIED RT_BIT_32(4) +/** Do not consider timestamps in microsoft counter signatures. */ +#define RTCRPKCS7VERIFY_SD_F_IGNORE_MS_TIMESTAMP RT_BIT_32(5) +/** The signed data requires certificates to have the timestamp extended + * usage bit present. This is used for recursivly verifying MS timestamp + * signatures. */ +#define RTCRPKCS7VERIFY_SD_F_USAGE_TIMESTAMPING RT_BIT_32(6) + +/** Indicates internally that we're validating a counter signature and should + * use different rules when checking out the authenticated attributes. + * @internal */ +#define RTCRPKCS7VERIFY_SD_F_COUNTER_SIGNATURE RT_BIT_32(31) +/** @} */ + +/** @} */ + +RT_C_DECLS_END + +#endif /* !IPRT_INCLUDED_crypto_pkcs7_h */ + |