diff options
Diffstat (limited to 'openssl-1.1.0h/crypto/cms/cms_ess.c')
| -rw-r--r-- | openssl-1.1.0h/crypto/cms/cms_ess.c | 337 |
1 files changed, 337 insertions, 0 deletions
diff --git a/openssl-1.1.0h/crypto/cms/cms_ess.c b/openssl-1.1.0h/crypto/cms/cms_ess.c new file mode 100644 index 0000000..4780231 --- /dev/null +++ b/openssl-1.1.0h/crypto/cms/cms_ess.c @@ -0,0 +1,337 @@ +/* + * Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the OpenSSL license (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 + */ + +#include "internal/cryptlib.h" +#include <openssl/asn1t.h> +#include <openssl/pem.h> +#include <openssl/rand.h> +#include <openssl/x509v3.h> +#include <openssl/err.h> +#include <openssl/cms.h> +#include "cms_lcl.h" + +IMPLEMENT_ASN1_FUNCTIONS(CMS_ReceiptRequest) + +/* ESS services: for now just Signed Receipt related */ + +int CMS_get1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest **prr) +{ + ASN1_STRING *str; + CMS_ReceiptRequest *rr = NULL; + if (prr) + *prr = NULL; + str = CMS_signed_get0_data_by_OBJ(si, + OBJ_nid2obj + (NID_id_smime_aa_receiptRequest), -3, + V_ASN1_SEQUENCE); + if (!str) + return 0; + + rr = ASN1_item_unpack(str, ASN1_ITEM_rptr(CMS_ReceiptRequest)); + if (!rr) + return -1; + if (prr) + *prr = rr; + else + CMS_ReceiptRequest_free(rr); + return 1; +} + +CMS_ReceiptRequest *CMS_ReceiptRequest_create0(unsigned char *id, int idlen, + int allorfirst, + STACK_OF(GENERAL_NAMES) + *receiptList, STACK_OF(GENERAL_NAMES) + *receiptsTo) +{ + CMS_ReceiptRequest *rr = NULL; + + rr = CMS_ReceiptRequest_new(); + if (rr == NULL) + goto merr; + if (id) + ASN1_STRING_set0(rr->signedContentIdentifier, id, idlen); + else { + if (!ASN1_STRING_set(rr->signedContentIdentifier, NULL, 32)) + goto merr; + if (RAND_bytes(rr->signedContentIdentifier->data, 32) <= 0) + goto err; + } + + sk_GENERAL_NAMES_pop_free(rr->receiptsTo, GENERAL_NAMES_free); + rr->receiptsTo = receiptsTo; + + if (receiptList) { + rr->receiptsFrom->type = 1; + rr->receiptsFrom->d.receiptList = receiptList; + } else { + rr->receiptsFrom->type = 0; + rr->receiptsFrom->d.allOrFirstTier = allorfirst; + } + + return rr; + + merr: + CMSerr(CMS_F_CMS_RECEIPTREQUEST_CREATE0, ERR_R_MALLOC_FAILURE); + + err: + CMS_ReceiptRequest_free(rr); + return NULL; + +} + +int CMS_add1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest *rr) +{ + unsigned char *rrder = NULL; + int rrderlen, r = 0; + + rrderlen = i2d_CMS_ReceiptRequest(rr, &rrder); + if (rrderlen < 0) + goto merr; + + if (!CMS_signed_add1_attr_by_NID(si, NID_id_smime_aa_receiptRequest, + V_ASN1_SEQUENCE, rrder, rrderlen)) + goto merr; + + r = 1; + + merr: + if (!r) + CMSerr(CMS_F_CMS_ADD1_RECEIPTREQUEST, ERR_R_MALLOC_FAILURE); + + OPENSSL_free(rrder); + + return r; + +} + +void CMS_ReceiptRequest_get0_values(CMS_ReceiptRequest *rr, + ASN1_STRING **pcid, + int *pallorfirst, + STACK_OF(GENERAL_NAMES) **plist, + STACK_OF(GENERAL_NAMES) **prto) +{ + if (pcid) + *pcid = rr->signedContentIdentifier; + if (rr->receiptsFrom->type == 0) { + if (pallorfirst) + *pallorfirst = (int)rr->receiptsFrom->d.allOrFirstTier; + if (plist) + *plist = NULL; + } else { + if (pallorfirst) + *pallorfirst = -1; + if (plist) + *plist = rr->receiptsFrom->d.receiptList; + } + if (prto) + *prto = rr->receiptsTo; +} + +/* Digest a SignerInfo structure for msgSigDigest attribute processing */ + +static int cms_msgSigDigest(CMS_SignerInfo *si, + unsigned char *dig, unsigned int *diglen) +{ + const EVP_MD *md; + md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm); + if (md == NULL) + return 0; + if (!ASN1_item_digest(ASN1_ITEM_rptr(CMS_Attributes_Verify), md, + si->signedAttrs, dig, diglen)) + return 0; + return 1; +} + +/* Add a msgSigDigest attribute to a SignerInfo */ + +int cms_msgSigDigest_add1(CMS_SignerInfo *dest, CMS_SignerInfo *src) +{ + unsigned char dig[EVP_MAX_MD_SIZE]; + unsigned int diglen; + if (!cms_msgSigDigest(src, dig, &diglen)) { + CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, CMS_R_MSGSIGDIGEST_ERROR); + return 0; + } + if (!CMS_signed_add1_attr_by_NID(dest, NID_id_smime_aa_msgSigDigest, + V_ASN1_OCTET_STRING, dig, diglen)) { + CMSerr(CMS_F_CMS_MSGSIGDIGEST_ADD1, ERR_R_MALLOC_FAILURE); + return 0; + } + return 1; +} + +/* Verify signed receipt after it has already passed normal CMS verify */ + +int cms_Receipt_verify(CMS_ContentInfo *cms, CMS_ContentInfo *req_cms) +{ + int r = 0, i; + CMS_ReceiptRequest *rr = NULL; + CMS_Receipt *rct = NULL; + STACK_OF(CMS_SignerInfo) *sis, *osis; + CMS_SignerInfo *si, *osi = NULL; + ASN1_OCTET_STRING *msig, **pcont; + ASN1_OBJECT *octype; + unsigned char dig[EVP_MAX_MD_SIZE]; + unsigned int diglen; + + /* Get SignerInfos, also checks SignedData content type */ + osis = CMS_get0_SignerInfos(req_cms); + sis = CMS_get0_SignerInfos(cms); + if (!osis || !sis) + goto err; + + if (sk_CMS_SignerInfo_num(sis) != 1) { + CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NEED_ONE_SIGNER); + goto err; + } + + /* Check receipt content type */ + if (OBJ_obj2nid(CMS_get0_eContentType(cms)) != NID_id_smime_ct_receipt) { + CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NOT_A_SIGNED_RECEIPT); + goto err; + } + + /* Extract and decode receipt content */ + pcont = CMS_get0_content(cms); + if (!pcont || !*pcont) { + CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_CONTENT); + goto err; + } + + rct = ASN1_item_unpack(*pcont, ASN1_ITEM_rptr(CMS_Receipt)); + + if (!rct) { + CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_RECEIPT_DECODE_ERROR); + goto err; + } + + /* Locate original request */ + + for (i = 0; i < sk_CMS_SignerInfo_num(osis); i++) { + osi = sk_CMS_SignerInfo_value(osis, i); + if (!ASN1_STRING_cmp(osi->signature, rct->originatorSignatureValue)) + break; + } + + if (i == sk_CMS_SignerInfo_num(osis)) { + CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_MATCHING_SIGNATURE); + goto err; + } + + si = sk_CMS_SignerInfo_value(sis, 0); + + /* Get msgSigDigest value and compare */ + + msig = CMS_signed_get0_data_by_OBJ(si, + OBJ_nid2obj + (NID_id_smime_aa_msgSigDigest), -3, + V_ASN1_OCTET_STRING); + + if (!msig) { + CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_MSGSIGDIGEST); + goto err; + } + + if (!cms_msgSigDigest(osi, dig, &diglen)) { + CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_MSGSIGDIGEST_ERROR); + goto err; + } + + if (diglen != (unsigned int)msig->length) { + CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_MSGSIGDIGEST_WRONG_LENGTH); + goto err; + } + + if (memcmp(dig, msig->data, diglen)) { + CMSerr(CMS_F_CMS_RECEIPT_VERIFY, + CMS_R_MSGSIGDIGEST_VERIFICATION_FAILURE); + goto err; + } + + /* Compare content types */ + + octype = CMS_signed_get0_data_by_OBJ(osi, + OBJ_nid2obj(NID_pkcs9_contentType), + -3, V_ASN1_OBJECT); + if (!octype) { + CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_CONTENT_TYPE); + goto err; + } + + /* Compare details in receipt request */ + + if (OBJ_cmp(octype, rct->contentType)) { + CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_CONTENT_TYPE_MISMATCH); + goto err; + } + + /* Get original receipt request details */ + + if (CMS_get1_ReceiptRequest(osi, &rr) <= 0) { + CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_NO_RECEIPT_REQUEST); + goto err; + } + + if (ASN1_STRING_cmp(rr->signedContentIdentifier, + rct->signedContentIdentifier)) { + CMSerr(CMS_F_CMS_RECEIPT_VERIFY, CMS_R_CONTENTIDENTIFIER_MISMATCH); + goto err; + } + + r = 1; + + err: + CMS_ReceiptRequest_free(rr); + M_ASN1_free_of(rct, CMS_Receipt); + return r; + +} + +/* + * Encode a Receipt into an OCTET STRING read for including into content of a + * SignedData ContentInfo. + */ + +ASN1_OCTET_STRING *cms_encode_Receipt(CMS_SignerInfo *si) +{ + CMS_Receipt rct; + CMS_ReceiptRequest *rr = NULL; + ASN1_OBJECT *ctype; + ASN1_OCTET_STRING *os = NULL; + + /* Get original receipt request */ + + /* Get original receipt request details */ + + if (CMS_get1_ReceiptRequest(si, &rr) <= 0) { + CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_RECEIPT_REQUEST); + goto err; + } + + /* Get original content type */ + + ctype = CMS_signed_get0_data_by_OBJ(si, + OBJ_nid2obj(NID_pkcs9_contentType), + -3, V_ASN1_OBJECT); + if (!ctype) { + CMSerr(CMS_F_CMS_ENCODE_RECEIPT, CMS_R_NO_CONTENT_TYPE); + goto err; + } + + rct.version = 1; + rct.contentType = ctype; + rct.signedContentIdentifier = rr->signedContentIdentifier; + rct.originatorSignatureValue = si->signature; + + os = ASN1_item_pack(&rct, ASN1_ITEM_rptr(CMS_Receipt), NULL); + + err: + CMS_ReceiptRequest_free(rr); + return os; +} |