/* $OpenBSD: cms_asn1.c,v 1.5 2014/07/12 16:03:37 miod Exp $ */ /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL * project. */ /* ==================================================================== * Copyright (c) 2008 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. * ==================================================================== */ #include #include #include #include "cms.h" #include "cms_lcl.h" ASN1_SEQUENCE(CMS_IssuerAndSerialNumber) = { ASN1_SIMPLE(CMS_IssuerAndSerialNumber, issuer, X509_NAME), ASN1_SIMPLE(CMS_IssuerAndSerialNumber, serialNumber, ASN1_INTEGER) } ASN1_SEQUENCE_END(CMS_IssuerAndSerialNumber) ASN1_SEQUENCE(CMS_OtherCertificateFormat) = { ASN1_SIMPLE(CMS_OtherCertificateFormat, otherCertFormat, ASN1_OBJECT), ASN1_OPT(CMS_OtherCertificateFormat, otherCert, ASN1_ANY) } ASN1_SEQUENCE_END(CMS_OtherCertificateFormat) ASN1_CHOICE(CMS_CertificateChoices) = { ASN1_SIMPLE(CMS_CertificateChoices, d.certificate, X509), ASN1_IMP(CMS_CertificateChoices, d.extendedCertificate, ASN1_SEQUENCE, 0), ASN1_IMP(CMS_CertificateChoices, d.v1AttrCert, ASN1_SEQUENCE, 1), ASN1_IMP(CMS_CertificateChoices, d.v2AttrCert, ASN1_SEQUENCE, 2), ASN1_IMP(CMS_CertificateChoices, d.other, CMS_OtherCertificateFormat, 3) } ASN1_CHOICE_END(CMS_CertificateChoices) ASN1_CHOICE(CMS_SignerIdentifier) = { ASN1_SIMPLE(CMS_SignerIdentifier, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber), ASN1_IMP(CMS_SignerIdentifier, d.subjectKeyIdentifier, ASN1_OCTET_STRING, 0) } ASN1_CHOICE_END(CMS_SignerIdentifier) ASN1_NDEF_SEQUENCE(CMS_EncapsulatedContentInfo) = { ASN1_SIMPLE(CMS_EncapsulatedContentInfo, eContentType, ASN1_OBJECT), ASN1_NDEF_EXP_OPT(CMS_EncapsulatedContentInfo, eContent, ASN1_OCTET_STRING_NDEF, 0) } ASN1_NDEF_SEQUENCE_END(CMS_EncapsulatedContentInfo) /* Minor tweak to operation: free up signer key, cert */ static int cms_si_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, void *exarg) { if (operation == ASN1_OP_FREE_POST) { CMS_SignerInfo *si = (CMS_SignerInfo *)*pval; EVP_PKEY_free(si->pkey); if (si->signer) X509_free(si->signer); } return 1; } ASN1_SEQUENCE_cb(CMS_SignerInfo, cms_si_cb) = { ASN1_SIMPLE(CMS_SignerInfo, version, LONG), ASN1_SIMPLE(CMS_SignerInfo, sid, CMS_SignerIdentifier), ASN1_SIMPLE(CMS_SignerInfo, digestAlgorithm, X509_ALGOR), ASN1_IMP_SET_OF_OPT(CMS_SignerInfo, signedAttrs, X509_ATTRIBUTE, 0), ASN1_SIMPLE(CMS_SignerInfo, signatureAlgorithm, X509_ALGOR), ASN1_SIMPLE(CMS_SignerInfo, signature, ASN1_OCTET_STRING), ASN1_IMP_SET_OF_OPT(CMS_SignerInfo, unsignedAttrs, X509_ATTRIBUTE, 1) } ASN1_SEQUENCE_END_cb(CMS_SignerInfo, CMS_SignerInfo) ASN1_SEQUENCE(CMS_OtherRevocationInfoFormat) = { ASN1_SIMPLE(CMS_OtherRevocationInfoFormat, otherRevInfoFormat, ASN1_OBJECT), ASN1_OPT(CMS_OtherRevocationInfoFormat, otherRevInfo, ASN1_ANY) } ASN1_SEQUENCE_END(CMS_OtherRevocationInfoFormat) ASN1_CHOICE(CMS_RevocationInfoChoice) = { ASN1_SIMPLE(CMS_RevocationInfoChoice, d.crl, X509_CRL), ASN1_IMP(CMS_RevocationInfoChoice, d.other, CMS_OtherRevocationInfoFormat, 1) } ASN1_CHOICE_END(CMS_RevocationInfoChoice) ASN1_NDEF_SEQUENCE(CMS_SignedData) = { ASN1_SIMPLE(CMS_SignedData, version, LONG), ASN1_SET_OF(CMS_SignedData, digestAlgorithms, X509_ALGOR), ASN1_SIMPLE(CMS_SignedData, encapContentInfo, CMS_EncapsulatedContentInfo), ASN1_IMP_SET_OF_OPT(CMS_SignedData, certificates, CMS_CertificateChoices, 0), ASN1_IMP_SET_OF_OPT(CMS_SignedData, crls, CMS_RevocationInfoChoice, 1), ASN1_SET_OF(CMS_SignedData, signerInfos, CMS_SignerInfo) } ASN1_NDEF_SEQUENCE_END(CMS_SignedData) ASN1_SEQUENCE(CMS_OriginatorInfo) = { ASN1_IMP_SET_OF_OPT(CMS_OriginatorInfo, certificates, CMS_CertificateChoices, 0), ASN1_IMP_SET_OF_OPT(CMS_OriginatorInfo, crls, CMS_RevocationInfoChoice, 1) } ASN1_SEQUENCE_END(CMS_OriginatorInfo) ASN1_NDEF_SEQUENCE(CMS_EncryptedContentInfo) = { ASN1_SIMPLE(CMS_EncryptedContentInfo, contentType, ASN1_OBJECT), ASN1_SIMPLE(CMS_EncryptedContentInfo, contentEncryptionAlgorithm, X509_ALGOR), ASN1_IMP_OPT(CMS_EncryptedContentInfo, encryptedContent, ASN1_OCTET_STRING_NDEF, 0) } ASN1_NDEF_SEQUENCE_END(CMS_EncryptedContentInfo) ASN1_SEQUENCE(CMS_KeyTransRecipientInfo) = { ASN1_SIMPLE(CMS_KeyTransRecipientInfo, version, LONG), ASN1_SIMPLE(CMS_KeyTransRecipientInfo, rid, CMS_SignerIdentifier), ASN1_SIMPLE(CMS_KeyTransRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR), ASN1_SIMPLE(CMS_KeyTransRecipientInfo, encryptedKey, ASN1_OCTET_STRING) } ASN1_SEQUENCE_END(CMS_KeyTransRecipientInfo) ASN1_SEQUENCE(CMS_OtherKeyAttribute) = { ASN1_SIMPLE(CMS_OtherKeyAttribute, keyAttrId, ASN1_OBJECT), ASN1_OPT(CMS_OtherKeyAttribute, keyAttr, ASN1_ANY) } ASN1_SEQUENCE_END(CMS_OtherKeyAttribute) ASN1_SEQUENCE(CMS_RecipientKeyIdentifier) = { ASN1_SIMPLE(CMS_RecipientKeyIdentifier, subjectKeyIdentifier, ASN1_OCTET_STRING), ASN1_OPT(CMS_RecipientKeyIdentifier, date, ASN1_GENERALIZEDTIME), ASN1_OPT(CMS_RecipientKeyIdentifier, other, CMS_OtherKeyAttribute) } ASN1_SEQUENCE_END(CMS_RecipientKeyIdentifier) ASN1_CHOICE(CMS_KeyAgreeRecipientIdentifier) = { ASN1_SIMPLE(CMS_KeyAgreeRecipientIdentifier, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber), ASN1_IMP(CMS_KeyAgreeRecipientIdentifier, d.rKeyId, CMS_RecipientKeyIdentifier, 0) } ASN1_CHOICE_END(CMS_KeyAgreeRecipientIdentifier) ASN1_SEQUENCE(CMS_RecipientEncryptedKey) = { ASN1_SIMPLE(CMS_RecipientEncryptedKey, rid, CMS_KeyAgreeRecipientIdentifier), ASN1_SIMPLE(CMS_RecipientEncryptedKey, encryptedKey, ASN1_OCTET_STRING) } ASN1_SEQUENCE_END(CMS_RecipientEncryptedKey) ASN1_SEQUENCE(CMS_OriginatorPublicKey) = { ASN1_SIMPLE(CMS_OriginatorPublicKey, algorithm, X509_ALGOR), ASN1_SIMPLE(CMS_OriginatorPublicKey, publicKey, ASN1_BIT_STRING) } ASN1_SEQUENCE_END(CMS_OriginatorPublicKey) ASN1_CHOICE(CMS_OriginatorIdentifierOrKey) = { ASN1_SIMPLE(CMS_OriginatorIdentifierOrKey, d.issuerAndSerialNumber, CMS_IssuerAndSerialNumber), ASN1_IMP(CMS_OriginatorIdentifierOrKey, d.subjectKeyIdentifier, ASN1_OCTET_STRING, 0), ASN1_IMP(CMS_OriginatorIdentifierOrKey, d.originatorKey, CMS_OriginatorPublicKey, 1) } ASN1_CHOICE_END(CMS_OriginatorIdentifierOrKey) ASN1_SEQUENCE(CMS_KeyAgreeRecipientInfo) = { ASN1_SIMPLE(CMS_KeyAgreeRecipientInfo, version, LONG), ASN1_EXP(CMS_KeyAgreeRecipientInfo, originator, CMS_OriginatorIdentifierOrKey, 0), ASN1_EXP_OPT(CMS_KeyAgreeRecipientInfo, ukm, ASN1_OCTET_STRING, 1), ASN1_SIMPLE(CMS_KeyAgreeRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR), ASN1_SEQUENCE_OF(CMS_KeyAgreeRecipientInfo, recipientEncryptedKeys, CMS_RecipientEncryptedKey) } ASN1_SEQUENCE_END(CMS_KeyAgreeRecipientInfo) ASN1_SEQUENCE(CMS_KEKIdentifier) = { ASN1_SIMPLE(CMS_KEKIdentifier, keyIdentifier, ASN1_OCTET_STRING), ASN1_OPT(CMS_KEKIdentifier, date, ASN1_GENERALIZEDTIME), ASN1_OPT(CMS_KEKIdentifier, other, CMS_OtherKeyAttribute) } ASN1_SEQUENCE_END(CMS_KEKIdentifier) ASN1_SEQUENCE(CMS_KEKRecipientInfo) = { ASN1_SIMPLE(CMS_KEKRecipientInfo, version, LONG), ASN1_SIMPLE(CMS_KEKRecipientInfo, kekid, CMS_KEKIdentifier), ASN1_SIMPLE(CMS_KEKRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR), ASN1_SIMPLE(CMS_KEKRecipientInfo, encryptedKey, ASN1_OCTET_STRING) } ASN1_SEQUENCE_END(CMS_KEKRecipientInfo) ASN1_SEQUENCE(CMS_PasswordRecipientInfo) = { ASN1_SIMPLE(CMS_PasswordRecipientInfo, version, LONG), ASN1_IMP_OPT(CMS_PasswordRecipientInfo, keyDerivationAlgorithm, X509_ALGOR, 0), ASN1_SIMPLE(CMS_PasswordRecipientInfo, keyEncryptionAlgorithm, X509_ALGOR), ASN1_SIMPLE(CMS_PasswordRecipientInfo, encryptedKey, ASN1_OCTET_STRING) } ASN1_SEQUENCE_END(CMS_PasswordRecipientInfo) ASN1_SEQUENCE(CMS_OtherRecipientInfo) = { ASN1_SIMPLE(CMS_OtherRecipientInfo, oriType, ASN1_OBJECT), ASN1_OPT(CMS_OtherRecipientInfo, oriValue, ASN1_ANY) } ASN1_SEQUENCE_END(CMS_OtherRecipientInfo) /* Free up RecipientInfo additional data */ static int cms_ri_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, void *exarg) { if (operation == ASN1_OP_FREE_PRE) { CMS_RecipientInfo *ri = (CMS_RecipientInfo *)*pval; if (ri->type == CMS_RECIPINFO_TRANS) { CMS_KeyTransRecipientInfo *ktri = ri->d.ktri; EVP_PKEY_free(ktri->pkey); if (ktri->recip) X509_free(ktri->recip); } else if (ri->type == CMS_RECIPINFO_KEK) { CMS_KEKRecipientInfo *kekri = ri->d.kekri; if (kekri->key) { OPENSSL_cleanse(kekri->key, kekri->keylen); free(kekri->key); } } else if (ri->type == CMS_RECIPINFO_PASS) { CMS_PasswordRecipientInfo *pwri = ri->d.pwri; if (pwri->pass) { OPENSSL_cleanse(pwri->pass, pwri->passlen); free(pwri->pass); } } } return 1; } ASN1_CHOICE_cb(CMS_RecipientInfo, cms_ri_cb) = { ASN1_SIMPLE(CMS_RecipientInfo, d.ktri, CMS_KeyTransRecipientInfo), ASN1_IMP(CMS_RecipientInfo, d.kari, CMS_KeyAgreeRecipientInfo, 1), ASN1_IMP(CMS_RecipientInfo, d.kekri, CMS_KEKRecipientInfo, 2), ASN1_IMP(CMS_RecipientInfo, d.pwri, CMS_PasswordRecipientInfo, 3), ASN1_IMP(CMS_RecipientInfo, d.ori, CMS_OtherRecipientInfo, 4) } ASN1_CHOICE_END_cb(CMS_RecipientInfo, CMS_RecipientInfo, type) ASN1_NDEF_SEQUENCE(CMS_EnvelopedData) = { ASN1_SIMPLE(CMS_EnvelopedData, version, LONG), ASN1_IMP_OPT(CMS_EnvelopedData, originatorInfo, CMS_OriginatorInfo, 0), ASN1_SET_OF(CMS_EnvelopedData, recipientInfos, CMS_RecipientInfo), ASN1_SIMPLE(CMS_EnvelopedData, encryptedContentInfo, CMS_EncryptedContentInfo), ASN1_IMP_SET_OF_OPT(CMS_EnvelopedData, unprotectedAttrs, X509_ATTRIBUTE, 1) } ASN1_NDEF_SEQUENCE_END(CMS_EnvelopedData) ASN1_NDEF_SEQUENCE(CMS_DigestedData) = { ASN1_SIMPLE(CMS_DigestedData, version, LONG), ASN1_SIMPLE(CMS_DigestedData, digestAlgorithm, X509_ALGOR), ASN1_SIMPLE(CMS_DigestedData, encapContentInfo, CMS_EncapsulatedContentInfo), ASN1_SIMPLE(CMS_DigestedData, digest, ASN1_OCTET_STRING) } ASN1_NDEF_SEQUENCE_END(CMS_DigestedData) ASN1_NDEF_SEQUENCE(CMS_EncryptedData) = { ASN1_SIMPLE(CMS_EncryptedData, version, LONG), ASN1_SIMPLE(CMS_EncryptedData, encryptedContentInfo, CMS_EncryptedContentInfo), ASN1_IMP_SET_OF_OPT(CMS_EncryptedData, unprotectedAttrs, X509_ATTRIBUTE, 1) } ASN1_NDEF_SEQUENCE_END(CMS_EncryptedData) ASN1_NDEF_SEQUENCE(CMS_AuthenticatedData) = { ASN1_SIMPLE(CMS_AuthenticatedData, version, LONG), ASN1_IMP_OPT(CMS_AuthenticatedData, originatorInfo, CMS_OriginatorInfo, 0), ASN1_SET_OF(CMS_AuthenticatedData, recipientInfos, CMS_RecipientInfo), ASN1_SIMPLE(CMS_AuthenticatedData, macAlgorithm, X509_ALGOR), ASN1_IMP(CMS_AuthenticatedData, digestAlgorithm, X509_ALGOR, 1), ASN1_SIMPLE(CMS_AuthenticatedData, encapContentInfo, CMS_EncapsulatedContentInfo), ASN1_IMP_SET_OF_OPT(CMS_AuthenticatedData, authAttrs, X509_ALGOR, 2), ASN1_SIMPLE(CMS_AuthenticatedData, mac, ASN1_OCTET_STRING), ASN1_IMP_SET_OF_OPT(CMS_AuthenticatedData, unauthAttrs, X509_ALGOR, 3) } ASN1_NDEF_SEQUENCE_END(CMS_AuthenticatedData) ASN1_NDEF_SEQUENCE(CMS_CompressedData) = { ASN1_SIMPLE(CMS_CompressedData, version, LONG), ASN1_SIMPLE(CMS_CompressedData, compressionAlgorithm, X509_ALGOR), ASN1_SIMPLE(CMS_CompressedData, encapContentInfo, CMS_EncapsulatedContentInfo), } ASN1_NDEF_SEQUENCE_END(CMS_CompressedData) /* This is the ANY DEFINED BY table for the top level ContentInfo structure */ ASN1_ADB_TEMPLATE(cms_default) = ASN1_EXP(CMS_ContentInfo, d.other, ASN1_ANY, 0); ASN1_ADB(CMS_ContentInfo) = { ADB_ENTRY(NID_pkcs7_data, ASN1_NDEF_EXP(CMS_ContentInfo, d.data, ASN1_OCTET_STRING_NDEF, 0)), ADB_ENTRY(NID_pkcs7_signed, ASN1_NDEF_EXP(CMS_ContentInfo, d.signedData, CMS_SignedData, 0)), ADB_ENTRY(NID_pkcs7_enveloped, ASN1_NDEF_EXP(CMS_ContentInfo, d.envelopedData, CMS_EnvelopedData, 0)), ADB_ENTRY(NID_pkcs7_digest, ASN1_NDEF_EXP(CMS_ContentInfo, d.digestedData, CMS_DigestedData, 0)), ADB_ENTRY(NID_pkcs7_encrypted, ASN1_NDEF_EXP(CMS_ContentInfo, d.encryptedData, CMS_EncryptedData, 0)), ADB_ENTRY(NID_id_smime_ct_authData, ASN1_NDEF_EXP(CMS_ContentInfo, d.authenticatedData, CMS_AuthenticatedData, 0)), ADB_ENTRY(NID_id_smime_ct_compressedData, ASN1_NDEF_EXP(CMS_ContentInfo, d.compressedData, CMS_CompressedData, 0)), } ASN1_ADB_END(CMS_ContentInfo, 0, contentType, 0, &cms_default_tt, NULL); /* CMS streaming support */ static int cms_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, void *exarg) { ASN1_STREAM_ARG *sarg = exarg; CMS_ContentInfo *cms = NULL; if (pval) cms = (CMS_ContentInfo *)*pval; else return 1; switch (operation) { case ASN1_OP_STREAM_PRE: if (CMS_stream(&sarg->boundary, cms) <= 0) return 0; case ASN1_OP_DETACHED_PRE: sarg->ndef_bio = CMS_dataInit(cms, sarg->out); if (!sarg->ndef_bio) return 0; break; case ASN1_OP_STREAM_POST: case ASN1_OP_DETACHED_POST: if (CMS_dataFinal(cms, sarg->ndef_bio) <= 0) return 0; break; } return 1; } ASN1_NDEF_SEQUENCE_cb(CMS_ContentInfo, cms_cb) = { ASN1_SIMPLE(CMS_ContentInfo, contentType, ASN1_OBJECT), ASN1_ADB_OBJECT(CMS_ContentInfo) } ASN1_NDEF_SEQUENCE_END_cb(CMS_ContentInfo, CMS_ContentInfo) /* Specials for signed attributes */ /* When signing attributes we want to reorder them to match the sorted * encoding. */ ASN1_ITEM_TEMPLATE(CMS_Attributes_Sign) = ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_ORDER, 0, CMS_ATTRIBUTES, X509_ATTRIBUTE) ASN1_ITEM_TEMPLATE_END(CMS_Attributes_Sign) /* When verifying attributes we need to use the received order. So * we use SEQUENCE OF and tag it to SET OF */ ASN1_ITEM_TEMPLATE(CMS_Attributes_Verify) = ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF | ASN1_TFLG_IMPTAG | ASN1_TFLG_UNIVERSAL, V_ASN1_SET, CMS_ATTRIBUTES, X509_ATTRIBUTE) ASN1_ITEM_TEMPLATE_END(CMS_Attributes_Verify) ASN1_CHOICE(CMS_ReceiptsFrom) = { ASN1_IMP(CMS_ReceiptsFrom, d.allOrFirstTier, LONG, 0), ASN1_IMP_SEQUENCE_OF(CMS_ReceiptsFrom, d.receiptList, GENERAL_NAMES, 1) } ASN1_CHOICE_END(CMS_ReceiptsFrom) ASN1_SEQUENCE(CMS_ReceiptRequest) = { ASN1_SIMPLE(CMS_ReceiptRequest, signedContentIdentifier, ASN1_OCTET_STRING), ASN1_SIMPLE(CMS_ReceiptRequest, receiptsFrom, CMS_ReceiptsFrom), ASN1_SEQUENCE_OF(CMS_ReceiptRequest, receiptsTo, GENERAL_NAMES) } ASN1_SEQUENCE_END(CMS_ReceiptRequest) ASN1_SEQUENCE(CMS_Receipt) = { ASN1_SIMPLE(CMS_Receipt, version, LONG), ASN1_SIMPLE(CMS_Receipt, contentType, ASN1_OBJECT), ASN1_SIMPLE(CMS_Receipt, signedContentIdentifier, ASN1_OCTET_STRING), ASN1_SIMPLE(CMS_Receipt, originatorSignatureValue, ASN1_OCTET_STRING) } ASN1_SEQUENCE_END(CMS_Receipt)