diff options
Diffstat (limited to 'thirdparty/openssl/crypto/cms/cms_sd.c')
| -rw-r--r-- | thirdparty/openssl/crypto/cms/cms_sd.c | 957 |
1 files changed, 0 insertions, 957 deletions
diff --git a/thirdparty/openssl/crypto/cms/cms_sd.c b/thirdparty/openssl/crypto/cms/cms_sd.c deleted file mode 100644 index a41aca8e12..0000000000 --- a/thirdparty/openssl/crypto/cms/cms_sd.c +++ /dev/null @@ -1,957 +0,0 @@ -/* crypto/cms/cms_sd.c */ -/* - * 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 "cryptlib.h" -#include <openssl/asn1t.h> -#include <openssl/pem.h> -#include <openssl/x509.h> -#include <openssl/x509v3.h> -#include <openssl/err.h> -#include <openssl/cms.h> -#include "cms_lcl.h" -#include "asn1_locl.h" - -/* CMS SignedData Utilities */ - -DECLARE_ASN1_ITEM(CMS_SignedData) - -static CMS_SignedData *cms_get0_signed(CMS_ContentInfo *cms) -{ - if (OBJ_obj2nid(cms->contentType) != NID_pkcs7_signed) { - CMSerr(CMS_F_CMS_GET0_SIGNED, CMS_R_CONTENT_TYPE_NOT_SIGNED_DATA); - return NULL; - } - return cms->d.signedData; -} - -static CMS_SignedData *cms_signed_data_init(CMS_ContentInfo *cms) -{ - if (cms->d.other == NULL) { - cms->d.signedData = M_ASN1_new_of(CMS_SignedData); - if (!cms->d.signedData) { - CMSerr(CMS_F_CMS_SIGNED_DATA_INIT, ERR_R_MALLOC_FAILURE); - return NULL; - } - cms->d.signedData->version = 1; - cms->d.signedData->encapContentInfo->eContentType = - OBJ_nid2obj(NID_pkcs7_data); - cms->d.signedData->encapContentInfo->partial = 1; - ASN1_OBJECT_free(cms->contentType); - cms->contentType = OBJ_nid2obj(NID_pkcs7_signed); - return cms->d.signedData; - } - return cms_get0_signed(cms); -} - -/* Just initialize SignedData e.g. for certs only structure */ - -int CMS_SignedData_init(CMS_ContentInfo *cms) -{ - if (cms_signed_data_init(cms)) - return 1; - else - return 0; -} - -/* Check structures and fixup version numbers (if necessary) */ - -static void cms_sd_set_version(CMS_SignedData *sd) -{ - int i; - CMS_CertificateChoices *cch; - CMS_RevocationInfoChoice *rch; - CMS_SignerInfo *si; - - for (i = 0; i < sk_CMS_CertificateChoices_num(sd->certificates); i++) { - cch = sk_CMS_CertificateChoices_value(sd->certificates, i); - if (cch->type == CMS_CERTCHOICE_OTHER) { - if (sd->version < 5) - sd->version = 5; - } else if (cch->type == CMS_CERTCHOICE_V2ACERT) { - if (sd->version < 4) - sd->version = 4; - } else if (cch->type == CMS_CERTCHOICE_V1ACERT) { - if (sd->version < 3) - sd->version = 3; - } - } - - for (i = 0; i < sk_CMS_RevocationInfoChoice_num(sd->crls); i++) { - rch = sk_CMS_RevocationInfoChoice_value(sd->crls, i); - if (rch->type == CMS_REVCHOICE_OTHER) { - if (sd->version < 5) - sd->version = 5; - } - } - - if ((OBJ_obj2nid(sd->encapContentInfo->eContentType) != NID_pkcs7_data) - && (sd->version < 3)) - sd->version = 3; - - for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) { - si = sk_CMS_SignerInfo_value(sd->signerInfos, i); - if (si->sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) { - if (si->version < 3) - si->version = 3; - if (sd->version < 3) - sd->version = 3; - } else if (si->version < 1) - si->version = 1; - } - - if (sd->version < 1) - sd->version = 1; - -} - -/* Copy an existing messageDigest value */ - -static int cms_copy_messageDigest(CMS_ContentInfo *cms, CMS_SignerInfo *si) -{ - STACK_OF(CMS_SignerInfo) *sinfos; - CMS_SignerInfo *sitmp; - int i; - sinfos = CMS_get0_SignerInfos(cms); - for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) { - ASN1_OCTET_STRING *messageDigest; - sitmp = sk_CMS_SignerInfo_value(sinfos, i); - if (sitmp == si) - continue; - if (CMS_signed_get_attr_count(sitmp) < 0) - continue; - if (OBJ_cmp(si->digestAlgorithm->algorithm, - sitmp->digestAlgorithm->algorithm)) - continue; - messageDigest = CMS_signed_get0_data_by_OBJ(sitmp, - OBJ_nid2obj - (NID_pkcs9_messageDigest), - -3, V_ASN1_OCTET_STRING); - if (!messageDigest) { - CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST, - CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE); - return 0; - } - - if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest, - V_ASN1_OCTET_STRING, - messageDigest, -1)) - return 1; - else - return 0; - } - CMSerr(CMS_F_CMS_COPY_MESSAGEDIGEST, CMS_R_NO_MATCHING_DIGEST); - return 0; -} - -int cms_set1_SignerIdentifier(CMS_SignerIdentifier *sid, X509 *cert, int type) -{ - switch (type) { - case CMS_SIGNERINFO_ISSUER_SERIAL: - if (!cms_set1_ias(&sid->d.issuerAndSerialNumber, cert)) - return 0; - break; - - case CMS_SIGNERINFO_KEYIDENTIFIER: - if (!cms_set1_keyid(&sid->d.subjectKeyIdentifier, cert)) - return 0; - break; - - default: - CMSerr(CMS_F_CMS_SET1_SIGNERIDENTIFIER, CMS_R_UNKNOWN_ID); - return 0; - } - - sid->type = type; - - return 1; -} - -int cms_SignerIdentifier_get0_signer_id(CMS_SignerIdentifier *sid, - ASN1_OCTET_STRING **keyid, - X509_NAME **issuer, - ASN1_INTEGER **sno) -{ - if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL) { - if (issuer) - *issuer = sid->d.issuerAndSerialNumber->issuer; - if (sno) - *sno = sid->d.issuerAndSerialNumber->serialNumber; - } else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) { - if (keyid) - *keyid = sid->d.subjectKeyIdentifier; - } else - return 0; - return 1; -} - -int cms_SignerIdentifier_cert_cmp(CMS_SignerIdentifier *sid, X509 *cert) -{ - if (sid->type == CMS_SIGNERINFO_ISSUER_SERIAL) - return cms_ias_cert_cmp(sid->d.issuerAndSerialNumber, cert); - else if (sid->type == CMS_SIGNERINFO_KEYIDENTIFIER) - return cms_keyid_cert_cmp(sid->d.subjectKeyIdentifier, cert); - else - return -1; -} - -static int cms_sd_asn1_ctrl(CMS_SignerInfo *si, int cmd) -{ - EVP_PKEY *pkey = si->pkey; - int i; - if (!pkey->ameth || !pkey->ameth->pkey_ctrl) - return 1; - i = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_CMS_SIGN, cmd, si); - if (i == -2) { - CMSerr(CMS_F_CMS_SD_ASN1_CTRL, CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE); - return 0; - } - if (i <= 0) { - CMSerr(CMS_F_CMS_SD_ASN1_CTRL, CMS_R_CTRL_FAILURE); - return 0; - } - return 1; -} - -CMS_SignerInfo *CMS_add1_signer(CMS_ContentInfo *cms, - X509 *signer, EVP_PKEY *pk, const EVP_MD *md, - unsigned int flags) -{ - CMS_SignedData *sd; - CMS_SignerInfo *si = NULL; - X509_ALGOR *alg; - int i, type; - if (!X509_check_private_key(signer, pk)) { - CMSerr(CMS_F_CMS_ADD1_SIGNER, - CMS_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); - return NULL; - } - sd = cms_signed_data_init(cms); - if (!sd) - goto err; - si = M_ASN1_new_of(CMS_SignerInfo); - if (!si) - goto merr; - X509_check_purpose(signer, -1, -1); - - CRYPTO_add(&pk->references, 1, CRYPTO_LOCK_EVP_PKEY); - CRYPTO_add(&signer->references, 1, CRYPTO_LOCK_X509); - - si->pkey = pk; - si->signer = signer; - EVP_MD_CTX_init(&si->mctx); - si->pctx = NULL; - - if (flags & CMS_USE_KEYID) { - si->version = 3; - if (sd->version < 3) - sd->version = 3; - type = CMS_SIGNERINFO_KEYIDENTIFIER; - } else { - type = CMS_SIGNERINFO_ISSUER_SERIAL; - si->version = 1; - } - - if (!cms_set1_SignerIdentifier(si->sid, signer, type)) - goto err; - - if (md == NULL) { - int def_nid; - if (EVP_PKEY_get_default_digest_nid(pk, &def_nid) <= 0) - goto err; - md = EVP_get_digestbynid(def_nid); - if (md == NULL) { - CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DEFAULT_DIGEST); - goto err; - } - } - - if (!md) { - CMSerr(CMS_F_CMS_ADD1_SIGNER, CMS_R_NO_DIGEST_SET); - goto err; - } - - cms_DigestAlgorithm_set(si->digestAlgorithm, md); - - /* See if digest is present in digestAlgorithms */ - for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) { - ASN1_OBJECT *aoid; - alg = sk_X509_ALGOR_value(sd->digestAlgorithms, i); - X509_ALGOR_get0(&aoid, NULL, NULL, alg); - if (OBJ_obj2nid(aoid) == EVP_MD_type(md)) - break; - } - - if (i == sk_X509_ALGOR_num(sd->digestAlgorithms)) { - alg = X509_ALGOR_new(); - if (!alg) - goto merr; - cms_DigestAlgorithm_set(alg, md); - if (!sk_X509_ALGOR_push(sd->digestAlgorithms, alg)) { - X509_ALGOR_free(alg); - goto merr; - } - } - - if (!(flags & CMS_KEY_PARAM) && !cms_sd_asn1_ctrl(si, 0)) - goto err; - if (!(flags & CMS_NOATTR)) { - /* - * Initialialize signed attributes strutucture so other attributes - * such as signing time etc are added later even if we add none here. - */ - if (!si->signedAttrs) { - si->signedAttrs = sk_X509_ATTRIBUTE_new_null(); - if (!si->signedAttrs) - goto merr; - } - - if (!(flags & CMS_NOSMIMECAP)) { - STACK_OF(X509_ALGOR) *smcap = NULL; - i = CMS_add_standard_smimecap(&smcap); - if (i) - i = CMS_add_smimecap(si, smcap); - sk_X509_ALGOR_pop_free(smcap, X509_ALGOR_free); - if (!i) - goto merr; - } - if (flags & CMS_REUSE_DIGEST) { - if (!cms_copy_messageDigest(cms, si)) - goto err; - if (!(flags & (CMS_PARTIAL | CMS_KEY_PARAM)) && - !CMS_SignerInfo_sign(si)) - goto err; - } - } - - if (!(flags & CMS_NOCERTS)) { - /* NB ignore -1 return for duplicate cert */ - if (!CMS_add1_cert(cms, signer)) - goto merr; - } - - if (flags & CMS_KEY_PARAM) { - if (flags & CMS_NOATTR) { - si->pctx = EVP_PKEY_CTX_new(si->pkey, NULL); - if (!si->pctx) - goto err; - if (EVP_PKEY_sign_init(si->pctx) <= 0) - goto err; - if (EVP_PKEY_CTX_set_signature_md(si->pctx, md) <= 0) - goto err; - } else if (EVP_DigestSignInit(&si->mctx, &si->pctx, md, NULL, pk) <= - 0) - goto err; - } - - if (!sd->signerInfos) - sd->signerInfos = sk_CMS_SignerInfo_new_null(); - if (!sd->signerInfos || !sk_CMS_SignerInfo_push(sd->signerInfos, si)) - goto merr; - - return si; - - merr: - CMSerr(CMS_F_CMS_ADD1_SIGNER, ERR_R_MALLOC_FAILURE); - err: - if (si) - M_ASN1_free_of(si, CMS_SignerInfo); - return NULL; - -} - -static int cms_add1_signingTime(CMS_SignerInfo *si, ASN1_TIME *t) -{ - ASN1_TIME *tt; - int r = 0; - if (t) - tt = t; - else - tt = X509_gmtime_adj(NULL, 0); - - if (!tt) - goto merr; - - if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_signingTime, - tt->type, tt, -1) <= 0) - goto merr; - - r = 1; - - merr: - - if (!t) - ASN1_TIME_free(tt); - - if (!r) - CMSerr(CMS_F_CMS_ADD1_SIGNINGTIME, ERR_R_MALLOC_FAILURE); - - return r; - -} - -EVP_PKEY_CTX *CMS_SignerInfo_get0_pkey_ctx(CMS_SignerInfo *si) -{ - return si->pctx; -} - -EVP_MD_CTX *CMS_SignerInfo_get0_md_ctx(CMS_SignerInfo *si) -{ - return &si->mctx; -} - -STACK_OF(CMS_SignerInfo) *CMS_get0_SignerInfos(CMS_ContentInfo *cms) -{ - CMS_SignedData *sd; - sd = cms_get0_signed(cms); - if (!sd) - return NULL; - return sd->signerInfos; -} - -STACK_OF(X509) *CMS_get0_signers(CMS_ContentInfo *cms) -{ - STACK_OF(X509) *signers = NULL; - STACK_OF(CMS_SignerInfo) *sinfos; - CMS_SignerInfo *si; - int i; - sinfos = CMS_get0_SignerInfos(cms); - for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) { - si = sk_CMS_SignerInfo_value(sinfos, i); - if (si->signer) { - if (!signers) { - signers = sk_X509_new_null(); - if (!signers) - return NULL; - } - if (!sk_X509_push(signers, si->signer)) { - sk_X509_free(signers); - return NULL; - } - } - } - return signers; -} - -void CMS_SignerInfo_set1_signer_cert(CMS_SignerInfo *si, X509 *signer) -{ - if (signer) { - CRYPTO_add(&signer->references, 1, CRYPTO_LOCK_X509); - if (si->pkey) - EVP_PKEY_free(si->pkey); - si->pkey = X509_get_pubkey(signer); - } - if (si->signer) - X509_free(si->signer); - si->signer = signer; -} - -int CMS_SignerInfo_get0_signer_id(CMS_SignerInfo *si, - ASN1_OCTET_STRING **keyid, - X509_NAME **issuer, ASN1_INTEGER **sno) -{ - return cms_SignerIdentifier_get0_signer_id(si->sid, keyid, issuer, sno); -} - -int CMS_SignerInfo_cert_cmp(CMS_SignerInfo *si, X509 *cert) -{ - return cms_SignerIdentifier_cert_cmp(si->sid, cert); -} - -int CMS_set1_signers_certs(CMS_ContentInfo *cms, STACK_OF(X509) *scerts, - unsigned int flags) -{ - CMS_SignedData *sd; - CMS_SignerInfo *si; - CMS_CertificateChoices *cch; - STACK_OF(CMS_CertificateChoices) *certs; - X509 *x; - int i, j; - int ret = 0; - sd = cms_get0_signed(cms); - if (!sd) - return -1; - certs = sd->certificates; - for (i = 0; i < sk_CMS_SignerInfo_num(sd->signerInfos); i++) { - si = sk_CMS_SignerInfo_value(sd->signerInfos, i); - if (si->signer) - continue; - - for (j = 0; j < sk_X509_num(scerts); j++) { - x = sk_X509_value(scerts, j); - if (CMS_SignerInfo_cert_cmp(si, x) == 0) { - CMS_SignerInfo_set1_signer_cert(si, x); - ret++; - break; - } - } - - if (si->signer || (flags & CMS_NOINTERN)) - continue; - - for (j = 0; j < sk_CMS_CertificateChoices_num(certs); j++) { - cch = sk_CMS_CertificateChoices_value(certs, j); - if (cch->type != 0) - continue; - x = cch->d.certificate; - if (CMS_SignerInfo_cert_cmp(si, x) == 0) { - CMS_SignerInfo_set1_signer_cert(si, x); - ret++; - break; - } - } - } - return ret; -} - -void CMS_SignerInfo_get0_algs(CMS_SignerInfo *si, EVP_PKEY **pk, - X509 **signer, X509_ALGOR **pdig, - X509_ALGOR **psig) -{ - if (pk) - *pk = si->pkey; - if (signer) - *signer = si->signer; - if (pdig) - *pdig = si->digestAlgorithm; - if (psig) - *psig = si->signatureAlgorithm; -} - -ASN1_OCTET_STRING *CMS_SignerInfo_get0_signature(CMS_SignerInfo *si) -{ - return si->signature; -} - -static int cms_SignerInfo_content_sign(CMS_ContentInfo *cms, - CMS_SignerInfo *si, BIO *chain) -{ - EVP_MD_CTX mctx; - int r = 0; - EVP_PKEY_CTX *pctx = NULL; - EVP_MD_CTX_init(&mctx); - - if (!si->pkey) { - CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, CMS_R_NO_PRIVATE_KEY); - return 0; - } - - if (!cms_DigestAlgorithm_find_ctx(&mctx, chain, si->digestAlgorithm)) - goto err; - /* Set SignerInfo algortihm details if we used custom parametsr */ - if (si->pctx && !cms_sd_asn1_ctrl(si, 0)) - goto err; - - /* - * If any signed attributes calculate and add messageDigest attribute - */ - - if (CMS_signed_get_attr_count(si) >= 0) { - ASN1_OBJECT *ctype = - cms->d.signedData->encapContentInfo->eContentType; - unsigned char md[EVP_MAX_MD_SIZE]; - unsigned int mdlen; - if (!EVP_DigestFinal_ex(&mctx, md, &mdlen)) - goto err; - if (!CMS_signed_add1_attr_by_NID(si, NID_pkcs9_messageDigest, - V_ASN1_OCTET_STRING, md, mdlen)) - goto err; - /* Copy content type across */ - if (CMS_signed_add1_attr_by_NID(si, NID_pkcs9_contentType, - V_ASN1_OBJECT, ctype, -1) <= 0) - goto err; - if (!CMS_SignerInfo_sign(si)) - goto err; - } else if (si->pctx) { - unsigned char *sig; - size_t siglen; - unsigned char md[EVP_MAX_MD_SIZE]; - unsigned int mdlen; - pctx = si->pctx; - if (!EVP_DigestFinal_ex(&mctx, md, &mdlen)) - goto err; - siglen = EVP_PKEY_size(si->pkey); - sig = OPENSSL_malloc(siglen); - if (!sig) { - CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, ERR_R_MALLOC_FAILURE); - goto err; - } - if (EVP_PKEY_sign(pctx, sig, &siglen, md, mdlen) <= 0) - goto err; - ASN1_STRING_set0(si->signature, sig, siglen); - } else { - unsigned char *sig; - unsigned int siglen; - sig = OPENSSL_malloc(EVP_PKEY_size(si->pkey)); - if (!sig) { - CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, ERR_R_MALLOC_FAILURE); - goto err; - } - if (!EVP_SignFinal(&mctx, sig, &siglen, si->pkey)) { - CMSerr(CMS_F_CMS_SIGNERINFO_CONTENT_SIGN, CMS_R_SIGNFINAL_ERROR); - OPENSSL_free(sig); - goto err; - } - ASN1_STRING_set0(si->signature, sig, siglen); - } - - r = 1; - - err: - EVP_MD_CTX_cleanup(&mctx); - if (pctx) - EVP_PKEY_CTX_free(pctx); - return r; - -} - -int cms_SignedData_final(CMS_ContentInfo *cms, BIO *chain) -{ - STACK_OF(CMS_SignerInfo) *sinfos; - CMS_SignerInfo *si; - int i; - sinfos = CMS_get0_SignerInfos(cms); - for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) { - si = sk_CMS_SignerInfo_value(sinfos, i); - if (!cms_SignerInfo_content_sign(cms, si, chain)) - return 0; - } - cms->d.signedData->encapContentInfo->partial = 0; - return 1; -} - -int CMS_SignerInfo_sign(CMS_SignerInfo *si) -{ - EVP_MD_CTX *mctx = &si->mctx; - EVP_PKEY_CTX *pctx; - unsigned char *abuf = NULL; - int alen; - size_t siglen; - const EVP_MD *md = NULL; - - md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm); - if (md == NULL) - return 0; - - if (CMS_signed_get_attr_by_NID(si, NID_pkcs9_signingTime, -1) < 0) { - if (!cms_add1_signingTime(si, NULL)) - goto err; - } - - if (si->pctx) - pctx = si->pctx; - else { - EVP_MD_CTX_init(mctx); - if (EVP_DigestSignInit(mctx, &pctx, md, NULL, si->pkey) <= 0) - goto err; - } - - if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN, - EVP_PKEY_CTRL_CMS_SIGN, 0, si) <= 0) { - CMSerr(CMS_F_CMS_SIGNERINFO_SIGN, CMS_R_CTRL_ERROR); - goto err; - } - - alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf, - ASN1_ITEM_rptr(CMS_Attributes_Sign)); - if (!abuf) - goto err; - if (EVP_DigestSignUpdate(mctx, abuf, alen) <= 0) - goto err; - if (EVP_DigestSignFinal(mctx, NULL, &siglen) <= 0) - goto err; - OPENSSL_free(abuf); - abuf = OPENSSL_malloc(siglen); - if (!abuf) - goto err; - if (EVP_DigestSignFinal(mctx, abuf, &siglen) <= 0) - goto err; - - if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_SIGN, - EVP_PKEY_CTRL_CMS_SIGN, 1, si) <= 0) { - CMSerr(CMS_F_CMS_SIGNERINFO_SIGN, CMS_R_CTRL_ERROR); - goto err; - } - - EVP_MD_CTX_cleanup(mctx); - - ASN1_STRING_set0(si->signature, abuf, siglen); - - return 1; - - err: - if (abuf) - OPENSSL_free(abuf); - EVP_MD_CTX_cleanup(mctx); - return 0; - -} - -int CMS_SignerInfo_verify(CMS_SignerInfo *si) -{ - EVP_MD_CTX *mctx = &si->mctx; - unsigned char *abuf = NULL; - int alen, r = -1; - const EVP_MD *md = NULL; - - if (!si->pkey) { - CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, CMS_R_NO_PUBLIC_KEY); - return -1; - } - - md = EVP_get_digestbyobj(si->digestAlgorithm->algorithm); - if (md == NULL) - return -1; - EVP_MD_CTX_init(mctx); - if (EVP_DigestVerifyInit(mctx, &si->pctx, md, NULL, si->pkey) <= 0) - goto err; - - if (!cms_sd_asn1_ctrl(si, 1)) - goto err; - - alen = ASN1_item_i2d((ASN1_VALUE *)si->signedAttrs, &abuf, - ASN1_ITEM_rptr(CMS_Attributes_Verify)); - if (!abuf) - goto err; - r = EVP_DigestVerifyUpdate(mctx, abuf, alen); - OPENSSL_free(abuf); - if (r <= 0) { - r = -1; - goto err; - } - r = EVP_DigestVerifyFinal(mctx, - si->signature->data, si->signature->length); - if (r <= 0) - CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY, CMS_R_VERIFICATION_FAILURE); - err: - EVP_MD_CTX_cleanup(mctx); - return r; -} - -/* Create a chain of digest BIOs from a CMS ContentInfo */ - -BIO *cms_SignedData_init_bio(CMS_ContentInfo *cms) -{ - int i; - CMS_SignedData *sd; - BIO *chain = NULL; - sd = cms_get0_signed(cms); - if (!sd) - return NULL; - if (cms->d.signedData->encapContentInfo->partial) - cms_sd_set_version(sd); - for (i = 0; i < sk_X509_ALGOR_num(sd->digestAlgorithms); i++) { - X509_ALGOR *digestAlgorithm; - BIO *mdbio; - digestAlgorithm = sk_X509_ALGOR_value(sd->digestAlgorithms, i); - mdbio = cms_DigestAlgorithm_init_bio(digestAlgorithm); - if (!mdbio) - goto err; - if (chain) - BIO_push(chain, mdbio); - else - chain = mdbio; - } - return chain; - err: - if (chain) - BIO_free_all(chain); - return NULL; -} - -int CMS_SignerInfo_verify_content(CMS_SignerInfo *si, BIO *chain) -{ - ASN1_OCTET_STRING *os = NULL; - EVP_MD_CTX mctx; - EVP_PKEY_CTX *pkctx = NULL; - int r = -1; - unsigned char mval[EVP_MAX_MD_SIZE]; - unsigned int mlen; - EVP_MD_CTX_init(&mctx); - /* If we have any signed attributes look for messageDigest value */ - if (CMS_signed_get_attr_count(si) >= 0) { - os = CMS_signed_get0_data_by_OBJ(si, - OBJ_nid2obj(NID_pkcs9_messageDigest), - -3, V_ASN1_OCTET_STRING); - if (!os) { - CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, - CMS_R_ERROR_READING_MESSAGEDIGEST_ATTRIBUTE); - goto err; - } - } - - if (!cms_DigestAlgorithm_find_ctx(&mctx, chain, si->digestAlgorithm)) - goto err; - - if (EVP_DigestFinal_ex(&mctx, mval, &mlen) <= 0) { - CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, - CMS_R_UNABLE_TO_FINALIZE_CONTEXT); - goto err; - } - - /* If messageDigest found compare it */ - - if (os) { - if (mlen != (unsigned int)os->length) { - CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, - CMS_R_MESSAGEDIGEST_ATTRIBUTE_WRONG_LENGTH); - goto err; - } - - if (memcmp(mval, os->data, mlen)) { - CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, - CMS_R_VERIFICATION_FAILURE); - r = 0; - } else - r = 1; - } else { - const EVP_MD *md = EVP_MD_CTX_md(&mctx); - pkctx = EVP_PKEY_CTX_new(si->pkey, NULL); - if (pkctx == NULL) - goto err; - if (EVP_PKEY_verify_init(pkctx) <= 0) - goto err; - if (EVP_PKEY_CTX_set_signature_md(pkctx, md) <= 0) - goto err; - si->pctx = pkctx; - if (!cms_sd_asn1_ctrl(si, 1)) - goto err; - r = EVP_PKEY_verify(pkctx, si->signature->data, - si->signature->length, mval, mlen); - if (r <= 0) { - CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CONTENT, - CMS_R_VERIFICATION_FAILURE); - r = 0; - } - } - - err: - if (pkctx) - EVP_PKEY_CTX_free(pkctx); - EVP_MD_CTX_cleanup(&mctx); - return r; - -} - -int CMS_add_smimecap(CMS_SignerInfo *si, STACK_OF(X509_ALGOR) *algs) -{ - unsigned char *smder = NULL; - int smderlen, r; - smderlen = i2d_X509_ALGORS(algs, &smder); - if (smderlen <= 0) - return 0; - r = CMS_signed_add1_attr_by_NID(si, NID_SMIMECapabilities, - V_ASN1_SEQUENCE, smder, smderlen); - OPENSSL_free(smder); - return r; -} - -int CMS_add_simple_smimecap(STACK_OF(X509_ALGOR) **algs, - int algnid, int keysize) -{ - X509_ALGOR *alg; - ASN1_INTEGER *key = NULL; - if (keysize > 0) { - key = ASN1_INTEGER_new(); - if (!key || !ASN1_INTEGER_set(key, keysize)) - return 0; - } - alg = X509_ALGOR_new(); - if (!alg) { - if (key) - ASN1_INTEGER_free(key); - return 0; - } - - X509_ALGOR_set0(alg, OBJ_nid2obj(algnid), - key ? V_ASN1_INTEGER : V_ASN1_UNDEF, key); - if (!*algs) - *algs = sk_X509_ALGOR_new_null(); - if (!*algs || !sk_X509_ALGOR_push(*algs, alg)) { - X509_ALGOR_free(alg); - return 0; - } - return 1; -} - -/* Check to see if a cipher exists and if so add S/MIME capabilities */ - -static int cms_add_cipher_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg) -{ - if (EVP_get_cipherbynid(nid)) - return CMS_add_simple_smimecap(sk, nid, arg); - return 1; -} - -static int cms_add_digest_smcap(STACK_OF(X509_ALGOR) **sk, int nid, int arg) -{ - if (EVP_get_digestbynid(nid)) - return CMS_add_simple_smimecap(sk, nid, arg); - return 1; -} - -int CMS_add_standard_smimecap(STACK_OF(X509_ALGOR) **smcap) -{ - if (!cms_add_cipher_smcap(smcap, NID_aes_256_cbc, -1) - || !cms_add_digest_smcap(smcap, NID_id_GostR3411_94, -1) - || !cms_add_cipher_smcap(smcap, NID_id_Gost28147_89, -1) - || !cms_add_cipher_smcap(smcap, NID_aes_192_cbc, -1) - || !cms_add_cipher_smcap(smcap, NID_aes_128_cbc, -1) - || !cms_add_cipher_smcap(smcap, NID_des_ede3_cbc, -1) - || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 128) - || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 64) - || !cms_add_cipher_smcap(smcap, NID_des_cbc, -1) - || !cms_add_cipher_smcap(smcap, NID_rc2_cbc, 40)) - return 0; - return 1; -} |