| /* |
| * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved. |
| * |
| * Licensed under the Apache License 2.0 (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 <stdio.h> |
| #include "internal/cryptlib.h" |
| #include <openssl/objects.h> |
| #include <openssl/x509.h> |
| #include <openssl/pkcs7.h> |
| #include "crypto/asn1.h" |
| #include "crypto/evp.h" |
| #include "crypto/x509.h" /* for sk_X509_add1_cert() */ |
| #include "pk7_local.h" |
| |
| long PKCS7_ctrl(PKCS7 *p7, int cmd, long larg, char *parg) |
| { |
| int nid; |
| long ret; |
| |
| nid = OBJ_obj2nid(p7->type); |
| |
| switch (cmd) { |
| /* NOTE(emilia): does not support detached digested data. */ |
| case PKCS7_OP_SET_DETACHED_SIGNATURE: |
| if (nid == NID_pkcs7_signed) { |
| ret = p7->detached = (int)larg; |
| if (ret && PKCS7_type_is_data(p7->d.sign->contents)) { |
| ASN1_OCTET_STRING *os; |
| os = p7->d.sign->contents->d.data; |
| ASN1_OCTET_STRING_free(os); |
| p7->d.sign->contents->d.data = NULL; |
| } |
| } else { |
| ERR_raise(ERR_LIB_PKCS7, |
| PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE); |
| ret = 0; |
| } |
| break; |
| case PKCS7_OP_GET_DETACHED_SIGNATURE: |
| if (nid == NID_pkcs7_signed) { |
| if (p7->d.sign == NULL || p7->d.sign->contents->d.ptr == NULL) |
| ret = 1; |
| else |
| ret = 0; |
| |
| p7->detached = ret; |
| } else { |
| ERR_raise(ERR_LIB_PKCS7, |
| PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE); |
| ret = 0; |
| } |
| |
| break; |
| default: |
| ERR_raise(ERR_LIB_PKCS7, PKCS7_R_UNKNOWN_OPERATION); |
| ret = 0; |
| } |
| return ret; |
| } |
| |
| int PKCS7_content_new(PKCS7 *p7, int type) |
| { |
| PKCS7 *ret = NULL; |
| |
| if ((ret = PKCS7_new()) == NULL) |
| goto err; |
| if (!PKCS7_set_type(ret, type)) |
| goto err; |
| if (!PKCS7_set_content(p7, ret)) |
| goto err; |
| |
| return 1; |
| err: |
| PKCS7_free(ret); |
| return 0; |
| } |
| |
| int PKCS7_set_content(PKCS7 *p7, PKCS7 *p7_data) |
| { |
| int i; |
| |
| i = OBJ_obj2nid(p7->type); |
| switch (i) { |
| case NID_pkcs7_signed: |
| PKCS7_free(p7->d.sign->contents); |
| p7->d.sign->contents = p7_data; |
| break; |
| case NID_pkcs7_digest: |
| PKCS7_free(p7->d.digest->contents); |
| p7->d.digest->contents = p7_data; |
| break; |
| case NID_pkcs7_data: |
| case NID_pkcs7_enveloped: |
| case NID_pkcs7_signedAndEnveloped: |
| case NID_pkcs7_encrypted: |
| default: |
| ERR_raise(ERR_LIB_PKCS7, PKCS7_R_UNSUPPORTED_CONTENT_TYPE); |
| goto err; |
| } |
| return 1; |
| err: |
| return 0; |
| } |
| |
| int PKCS7_set_type(PKCS7 *p7, int type) |
| { |
| ASN1_OBJECT *obj; |
| |
| /* |
| * PKCS7_content_free(p7); |
| */ |
| obj = OBJ_nid2obj(type); /* will not fail */ |
| |
| switch (type) { |
| case NID_pkcs7_signed: |
| p7->type = obj; |
| if ((p7->d.sign = PKCS7_SIGNED_new()) == NULL) |
| goto err; |
| if (!ASN1_INTEGER_set(p7->d.sign->version, 1)) { |
| PKCS7_SIGNED_free(p7->d.sign); |
| p7->d.sign = NULL; |
| goto err; |
| } |
| break; |
| case NID_pkcs7_data: |
| p7->type = obj; |
| if ((p7->d.data = ASN1_OCTET_STRING_new()) == NULL) |
| goto err; |
| break; |
| case NID_pkcs7_signedAndEnveloped: |
| p7->type = obj; |
| if ((p7->d.signed_and_enveloped = PKCS7_SIGN_ENVELOPE_new()) |
| == NULL) |
| goto err; |
| if (!ASN1_INTEGER_set(p7->d.signed_and_enveloped->version, 1)) |
| goto err; |
| p7->d.signed_and_enveloped->enc_data->content_type |
| = OBJ_nid2obj(NID_pkcs7_data); |
| break; |
| case NID_pkcs7_enveloped: |
| p7->type = obj; |
| if ((p7->d.enveloped = PKCS7_ENVELOPE_new()) |
| == NULL) |
| goto err; |
| if (!ASN1_INTEGER_set(p7->d.enveloped->version, 0)) |
| goto err; |
| p7->d.enveloped->enc_data->content_type = OBJ_nid2obj(NID_pkcs7_data); |
| break; |
| case NID_pkcs7_encrypted: |
| p7->type = obj; |
| if ((p7->d.encrypted = PKCS7_ENCRYPT_new()) |
| == NULL) |
| goto err; |
| if (!ASN1_INTEGER_set(p7->d.encrypted->version, 0)) |
| goto err; |
| p7->d.encrypted->enc_data->content_type = OBJ_nid2obj(NID_pkcs7_data); |
| break; |
| |
| case NID_pkcs7_digest: |
| p7->type = obj; |
| if ((p7->d.digest = PKCS7_DIGEST_new()) |
| == NULL) |
| goto err; |
| if (!ASN1_INTEGER_set(p7->d.digest->version, 0)) |
| goto err; |
| break; |
| default: |
| ERR_raise(ERR_LIB_PKCS7, PKCS7_R_UNSUPPORTED_CONTENT_TYPE); |
| goto err; |
| } |
| return 1; |
| err: |
| return 0; |
| } |
| |
| int PKCS7_set0_type_other(PKCS7 *p7, int type, ASN1_TYPE *other) |
| { |
| p7->type = OBJ_nid2obj(type); |
| p7->d.other = other; |
| return 1; |
| } |
| |
| int PKCS7_add_signer(PKCS7 *p7, PKCS7_SIGNER_INFO *psi) |
| { |
| int i, j; |
| ASN1_OBJECT *obj; |
| X509_ALGOR *alg; |
| STACK_OF(PKCS7_SIGNER_INFO) *signer_sk; |
| STACK_OF(X509_ALGOR) *md_sk; |
| |
| i = OBJ_obj2nid(p7->type); |
| switch (i) { |
| case NID_pkcs7_signed: |
| signer_sk = p7->d.sign->signer_info; |
| md_sk = p7->d.sign->md_algs; |
| break; |
| case NID_pkcs7_signedAndEnveloped: |
| signer_sk = p7->d.signed_and_enveloped->signer_info; |
| md_sk = p7->d.signed_and_enveloped->md_algs; |
| break; |
| default: |
| ERR_raise(ERR_LIB_PKCS7, PKCS7_R_WRONG_CONTENT_TYPE); |
| return 0; |
| } |
| |
| obj = psi->digest_alg->algorithm; |
| /* If the digest is not currently listed, add it */ |
| j = 0; |
| for (i = 0; i < sk_X509_ALGOR_num(md_sk); i++) { |
| alg = sk_X509_ALGOR_value(md_sk, i); |
| if (OBJ_cmp(obj, alg->algorithm) == 0) { |
| j = 1; |
| break; |
| } |
| } |
| if (!j) { /* we need to add another algorithm */ |
| int nid; |
| |
| if ((alg = X509_ALGOR_new()) == NULL |
| || (alg->parameter = ASN1_TYPE_new()) == NULL) { |
| X509_ALGOR_free(alg); |
| ERR_raise(ERR_LIB_PKCS7, ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| /* |
| * If there is a constant copy of the ASN1 OBJECT in libcrypto, then |
| * use that. Otherwise, use a dynamically duplicated copy |
| */ |
| if ((nid = OBJ_obj2nid(obj)) != NID_undef) |
| alg->algorithm = OBJ_nid2obj(nid); |
| else |
| alg->algorithm = OBJ_dup(obj); |
| alg->parameter->type = V_ASN1_NULL; |
| if (alg->algorithm == NULL || !sk_X509_ALGOR_push(md_sk, alg)) { |
| X509_ALGOR_free(alg); |
| return 0; |
| } |
| } |
| |
| psi->ctx = ossl_pkcs7_get0_ctx(p7); |
| if (!sk_PKCS7_SIGNER_INFO_push(signer_sk, psi)) |
| return 0; |
| return 1; |
| } |
| |
| int PKCS7_add_certificate(PKCS7 *p7, X509 *x509) |
| { |
| int i; |
| STACK_OF(X509) **sk; |
| |
| i = OBJ_obj2nid(p7->type); |
| switch (i) { |
| case NID_pkcs7_signed: |
| sk = &(p7->d.sign->cert); |
| break; |
| case NID_pkcs7_signedAndEnveloped: |
| sk = &(p7->d.signed_and_enveloped->cert); |
| break; |
| default: |
| ERR_raise(ERR_LIB_PKCS7, PKCS7_R_WRONG_CONTENT_TYPE); |
| return 0; |
| } |
| |
| return ossl_x509_add_cert_new(sk, x509, X509_ADD_FLAG_UP_REF); |
| } |
| |
| int PKCS7_add_crl(PKCS7 *p7, X509_CRL *crl) |
| { |
| int i; |
| STACK_OF(X509_CRL) **sk; |
| |
| i = OBJ_obj2nid(p7->type); |
| switch (i) { |
| case NID_pkcs7_signed: |
| sk = &(p7->d.sign->crl); |
| break; |
| case NID_pkcs7_signedAndEnveloped: |
| sk = &(p7->d.signed_and_enveloped->crl); |
| break; |
| default: |
| ERR_raise(ERR_LIB_PKCS7, PKCS7_R_WRONG_CONTENT_TYPE); |
| return 0; |
| } |
| |
| if (*sk == NULL) |
| *sk = sk_X509_CRL_new_null(); |
| if (*sk == NULL) { |
| ERR_raise(ERR_LIB_PKCS7, ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| |
| X509_CRL_up_ref(crl); |
| if (!sk_X509_CRL_push(*sk, crl)) { |
| X509_CRL_free(crl); |
| return 0; |
| } |
| return 1; |
| } |
| |
| static int pkcs7_ecdsa_or_dsa_sign_verify_setup(PKCS7_SIGNER_INFO *si, |
| int verify) |
| { |
| if (verify == 0) { |
| int snid, hnid; |
| X509_ALGOR *alg1, *alg2; |
| EVP_PKEY *pkey = si->pkey; |
| |
| PKCS7_SIGNER_INFO_get0_algs(si, NULL, &alg1, &alg2); |
| if (alg1 == NULL || alg1->algorithm == NULL) |
| return -1; |
| hnid = OBJ_obj2nid(alg1->algorithm); |
| if (hnid == NID_undef) |
| return -1; |
| if (!OBJ_find_sigid_by_algs(&snid, hnid, EVP_PKEY_get_id(pkey))) |
| return -1; |
| X509_ALGOR_set0(alg2, OBJ_nid2obj(snid), V_ASN1_UNDEF, 0); |
| } |
| return 1; |
| } |
| |
| static int pkcs7_rsa_sign_verify_setup(PKCS7_SIGNER_INFO *si, int verify) |
| { |
| if (verify == 0) { |
| X509_ALGOR *alg = NULL; |
| |
| PKCS7_SIGNER_INFO_get0_algs(si, NULL, NULL, &alg); |
| if (alg != NULL) |
| X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0); |
| } |
| return 1; |
| } |
| |
| int PKCS7_SIGNER_INFO_set(PKCS7_SIGNER_INFO *p7i, X509 *x509, EVP_PKEY *pkey, |
| const EVP_MD *dgst) |
| { |
| int ret; |
| |
| /* We now need to add another PKCS7_SIGNER_INFO entry */ |
| if (!ASN1_INTEGER_set(p7i->version, 1)) |
| goto err; |
| if (!X509_NAME_set(&p7i->issuer_and_serial->issuer, |
| X509_get_issuer_name(x509))) |
| goto err; |
| |
| /* |
| * because ASN1_INTEGER_set is used to set a 'long' we will do things the |
| * ugly way. |
| */ |
| ASN1_INTEGER_free(p7i->issuer_and_serial->serial); |
| if (!(p7i->issuer_and_serial->serial = |
| ASN1_INTEGER_dup(X509_get0_serialNumber(x509)))) |
| goto err; |
| |
| /* lets keep the pkey around for a while */ |
| EVP_PKEY_up_ref(pkey); |
| p7i->pkey = pkey; |
| |
| /* Set the algorithms */ |
| |
| X509_ALGOR_set0(p7i->digest_alg, OBJ_nid2obj(EVP_MD_get_type(dgst)), |
| V_ASN1_NULL, NULL); |
| |
| if (EVP_PKEY_is_a(pkey, "EC") || EVP_PKEY_is_a(pkey, "DSA")) |
| return pkcs7_ecdsa_or_dsa_sign_verify_setup(p7i, 0); |
| if (EVP_PKEY_is_a(pkey, "RSA")) |
| return pkcs7_rsa_sign_verify_setup(p7i, 0); |
| |
| if (pkey->ameth != NULL && pkey->ameth->pkey_ctrl != NULL) { |
| ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_SIGN, 0, p7i); |
| if (ret > 0) |
| return 1; |
| if (ret != -2) { |
| ERR_raise(ERR_LIB_PKCS7, PKCS7_R_SIGNING_CTRL_FAILURE); |
| return 0; |
| } |
| } |
| ERR_raise(ERR_LIB_PKCS7, PKCS7_R_SIGNING_NOT_SUPPORTED_FOR_THIS_KEY_TYPE); |
| err: |
| return 0; |
| } |
| |
| PKCS7_SIGNER_INFO *PKCS7_add_signature(PKCS7 *p7, X509 *x509, EVP_PKEY *pkey, |
| const EVP_MD *dgst) |
| { |
| PKCS7_SIGNER_INFO *si = NULL; |
| |
| if (dgst == NULL) { |
| int def_nid; |
| if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) <= 0) |
| goto err; |
| dgst = EVP_get_digestbynid(def_nid); |
| if (dgst == NULL) { |
| ERR_raise(ERR_LIB_PKCS7, PKCS7_R_NO_DEFAULT_DIGEST); |
| goto err; |
| } |
| } |
| |
| if ((si = PKCS7_SIGNER_INFO_new()) == NULL) |
| goto err; |
| if (!PKCS7_SIGNER_INFO_set(si, x509, pkey, dgst)) |
| goto err; |
| if (!PKCS7_add_signer(p7, si)) |
| goto err; |
| return si; |
| err: |
| PKCS7_SIGNER_INFO_free(si); |
| return NULL; |
| } |
| |
| static STACK_OF(X509) *pkcs7_get_signer_certs(const PKCS7 *p7) |
| { |
| if (PKCS7_type_is_signed(p7)) |
| return p7->d.sign->cert; |
| if (PKCS7_type_is_signedAndEnveloped(p7)) |
| return p7->d.signed_and_enveloped->cert; |
| return NULL; |
| } |
| |
| static STACK_OF(PKCS7_RECIP_INFO) *pkcs7_get_recipient_info(const PKCS7 *p7) |
| { |
| if (PKCS7_type_is_signedAndEnveloped(p7)) |
| return p7->d.signed_and_enveloped->recipientinfo; |
| if (PKCS7_type_is_enveloped(p7)) |
| return p7->d.enveloped->recipientinfo; |
| return NULL; |
| } |
| |
| /* |
| * Set up the library context into any loaded structure that needs it. |
| * i.e loaded X509 objects. |
| */ |
| void ossl_pkcs7_resolve_libctx(PKCS7 *p7) |
| { |
| int i; |
| const PKCS7_CTX *ctx = ossl_pkcs7_get0_ctx(p7); |
| OSSL_LIB_CTX *libctx = ossl_pkcs7_ctx_get0_libctx(ctx); |
| const char *propq = ossl_pkcs7_ctx_get0_propq(ctx); |
| STACK_OF(PKCS7_RECIP_INFO) *rinfos = pkcs7_get_recipient_info(p7); |
| STACK_OF(PKCS7_SIGNER_INFO) *sinfos = PKCS7_get_signer_info(p7); |
| STACK_OF(X509) *certs = pkcs7_get_signer_certs(p7); |
| |
| if (ctx == NULL) |
| return; |
| |
| for (i = 0; i < sk_X509_num(certs); i++) |
| ossl_x509_set0_libctx(sk_X509_value(certs, i), libctx, propq); |
| |
| for (i = 0; i < sk_PKCS7_RECIP_INFO_num(rinfos); i++) { |
| PKCS7_RECIP_INFO *ri = sk_PKCS7_RECIP_INFO_value(rinfos, i); |
| |
| ossl_x509_set0_libctx(ri->cert, libctx, propq); |
| } |
| |
| for (i = 0; i < sk_PKCS7_SIGNER_INFO_num(sinfos); i++) { |
| PKCS7_SIGNER_INFO *si = sk_PKCS7_SIGNER_INFO_value(sinfos, i); |
| |
| if (si != NULL) |
| si->ctx = ctx; |
| } |
| } |
| |
| const PKCS7_CTX *ossl_pkcs7_get0_ctx(const PKCS7 *p7) |
| { |
| return p7 != NULL ? &p7->ctx : NULL; |
| } |
| |
| void ossl_pkcs7_set0_libctx(PKCS7 *p7, OSSL_LIB_CTX *ctx) |
| { |
| p7->ctx.libctx = ctx; |
| } |
| |
| int ossl_pkcs7_set1_propq(PKCS7 *p7, const char *propq) |
| { |
| if (p7->ctx.propq != NULL) { |
| OPENSSL_free(p7->ctx.propq); |
| p7->ctx.propq = NULL; |
| } |
| if (propq != NULL) { |
| p7->ctx.propq = OPENSSL_strdup(propq); |
| if (p7->ctx.propq == NULL) { |
| ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| } |
| return 1; |
| } |
| |
| int ossl_pkcs7_ctx_propagate(const PKCS7 *from, PKCS7 *to) |
| { |
| ossl_pkcs7_set0_libctx(to, from->ctx.libctx); |
| if (!ossl_pkcs7_set1_propq(to, from->ctx.propq)) |
| return 0; |
| |
| ossl_pkcs7_resolve_libctx(to); |
| return 1; |
| } |
| |
| OSSL_LIB_CTX *ossl_pkcs7_ctx_get0_libctx(const PKCS7_CTX *ctx) |
| { |
| return ctx != NULL ? ctx->libctx : NULL; |
| } |
| const char *ossl_pkcs7_ctx_get0_propq(const PKCS7_CTX *ctx) |
| { |
| return ctx != NULL ? ctx->propq : NULL; |
| } |
| |
| int PKCS7_set_digest(PKCS7 *p7, const EVP_MD *md) |
| { |
| if (PKCS7_type_is_digest(p7)) { |
| if ((p7->d.digest->md->parameter = ASN1_TYPE_new()) == NULL) { |
| ERR_raise(ERR_LIB_PKCS7, ERR_R_MALLOC_FAILURE); |
| return 0; |
| } |
| p7->d.digest->md->parameter->type = V_ASN1_NULL; |
| p7->d.digest->md->algorithm = OBJ_nid2obj(EVP_MD_nid(md)); |
| return 1; |
| } |
| |
| ERR_raise(ERR_LIB_PKCS7, PKCS7_R_WRONG_CONTENT_TYPE); |
| return 1; |
| } |
| |
| STACK_OF(PKCS7_SIGNER_INFO) *PKCS7_get_signer_info(PKCS7 *p7) |
| { |
| if (p7 == NULL || p7->d.ptr == NULL) |
| return NULL; |
| if (PKCS7_type_is_signed(p7)) { |
| return p7->d.sign->signer_info; |
| } else if (PKCS7_type_is_signedAndEnveloped(p7)) { |
| return p7->d.signed_and_enveloped->signer_info; |
| } else |
| return NULL; |
| } |
| |
| void PKCS7_SIGNER_INFO_get0_algs(PKCS7_SIGNER_INFO *si, EVP_PKEY **pk, |
| X509_ALGOR **pdig, X509_ALGOR **psig) |
| { |
| if (pk) |
| *pk = si->pkey; |
| if (pdig) |
| *pdig = si->digest_alg; |
| if (psig) |
| *psig = si->digest_enc_alg; |
| } |
| |
| void PKCS7_RECIP_INFO_get0_alg(PKCS7_RECIP_INFO *ri, X509_ALGOR **penc) |
| { |
| if (penc) |
| *penc = ri->key_enc_algor; |
| } |
| |
| PKCS7_RECIP_INFO *PKCS7_add_recipient(PKCS7 *p7, X509 *x509) |
| { |
| PKCS7_RECIP_INFO *ri; |
| |
| if ((ri = PKCS7_RECIP_INFO_new()) == NULL) |
| goto err; |
| if (!PKCS7_RECIP_INFO_set(ri, x509)) |
| goto err; |
| if (!PKCS7_add_recipient_info(p7, ri)) |
| goto err; |
| ri->ctx = ossl_pkcs7_get0_ctx(p7); |
| return ri; |
| err: |
| PKCS7_RECIP_INFO_free(ri); |
| return NULL; |
| } |
| |
| int PKCS7_add_recipient_info(PKCS7 *p7, PKCS7_RECIP_INFO *ri) |
| { |
| int i; |
| STACK_OF(PKCS7_RECIP_INFO) *sk; |
| |
| i = OBJ_obj2nid(p7->type); |
| switch (i) { |
| case NID_pkcs7_signedAndEnveloped: |
| sk = p7->d.signed_and_enveloped->recipientinfo; |
| break; |
| case NID_pkcs7_enveloped: |
| sk = p7->d.enveloped->recipientinfo; |
| break; |
| default: |
| ERR_raise(ERR_LIB_PKCS7, PKCS7_R_WRONG_CONTENT_TYPE); |
| return 0; |
| } |
| |
| if (!sk_PKCS7_RECIP_INFO_push(sk, ri)) |
| return 0; |
| return 1; |
| } |
| |
| static int pkcs7_rsa_encrypt_decrypt_setup(PKCS7_RECIP_INFO *ri, int decrypt) |
| { |
| X509_ALGOR *alg = NULL; |
| |
| if (decrypt == 0) { |
| PKCS7_RECIP_INFO_get0_alg(ri, &alg); |
| if (alg != NULL) |
| X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption), V_ASN1_NULL, 0); |
| } |
| return 1; |
| } |
| |
| int PKCS7_RECIP_INFO_set(PKCS7_RECIP_INFO *p7i, X509 *x509) |
| { |
| int ret; |
| EVP_PKEY *pkey = NULL; |
| if (!ASN1_INTEGER_set(p7i->version, 0)) |
| return 0; |
| if (!X509_NAME_set(&p7i->issuer_and_serial->issuer, |
| X509_get_issuer_name(x509))) |
| return 0; |
| |
| ASN1_INTEGER_free(p7i->issuer_and_serial->serial); |
| if (!(p7i->issuer_and_serial->serial = |
| ASN1_INTEGER_dup(X509_get0_serialNumber(x509)))) |
| return 0; |
| |
| pkey = X509_get0_pubkey(x509); |
| if (pkey == NULL) |
| return 0; |
| |
| if (EVP_PKEY_is_a(pkey, "RSA-PSS")) |
| return -2; |
| if (EVP_PKEY_is_a(pkey, "RSA")) { |
| if (pkcs7_rsa_encrypt_decrypt_setup(p7i, 0) <= 0) |
| goto err; |
| goto finished; |
| } |
| |
| if (pkey->ameth == NULL || pkey->ameth->pkey_ctrl == NULL) { |
| ERR_raise(ERR_LIB_PKCS7, |
| PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE); |
| goto err; |
| } |
| |
| ret = pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_PKCS7_ENCRYPT, 0, p7i); |
| if (ret == -2) { |
| ERR_raise(ERR_LIB_PKCS7, |
| PKCS7_R_ENCRYPTION_NOT_SUPPORTED_FOR_THIS_KEY_TYPE); |
| goto err; |
| } |
| if (ret <= 0) { |
| ERR_raise(ERR_LIB_PKCS7, PKCS7_R_ENCRYPTION_CTRL_FAILURE); |
| goto err; |
| } |
| finished: |
| X509_up_ref(x509); |
| p7i->cert = x509; |
| |
| return 1; |
| |
| err: |
| return 0; |
| } |
| |
| X509 *PKCS7_cert_from_signer_info(PKCS7 *p7, PKCS7_SIGNER_INFO *si) |
| { |
| if (PKCS7_type_is_signed(p7)) |
| return (X509_find_by_issuer_and_serial(p7->d.sign->cert, |
| si->issuer_and_serial->issuer, |
| si-> |
| issuer_and_serial->serial)); |
| else |
| return NULL; |
| } |
| |
| int PKCS7_set_cipher(PKCS7 *p7, const EVP_CIPHER *cipher) |
| { |
| int i; |
| PKCS7_ENC_CONTENT *ec; |
| |
| i = OBJ_obj2nid(p7->type); |
| switch (i) { |
| case NID_pkcs7_signedAndEnveloped: |
| ec = p7->d.signed_and_enveloped->enc_data; |
| break; |
| case NID_pkcs7_enveloped: |
| ec = p7->d.enveloped->enc_data; |
| break; |
| default: |
| ERR_raise(ERR_LIB_PKCS7, PKCS7_R_WRONG_CONTENT_TYPE); |
| return 0; |
| } |
| |
| /* Check cipher OID exists and has data in it */ |
| i = EVP_CIPHER_get_type(cipher); |
| if (i == NID_undef) { |
| ERR_raise(ERR_LIB_PKCS7, PKCS7_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER); |
| return 0; |
| } |
| |
| ec->cipher = cipher; |
| ec->ctx = ossl_pkcs7_get0_ctx(p7); |
| return 1; |
| } |
| |
| /* unfortunately cannot constify BIO_new_NDEF() due to this and CMS_stream() */ |
| int PKCS7_stream(unsigned char ***boundary, PKCS7 *p7) |
| { |
| ASN1_OCTET_STRING *os = NULL; |
| |
| switch (OBJ_obj2nid(p7->type)) { |
| case NID_pkcs7_data: |
| os = p7->d.data; |
| break; |
| |
| case NID_pkcs7_signedAndEnveloped: |
| os = p7->d.signed_and_enveloped->enc_data->enc_data; |
| if (os == NULL) { |
| os = ASN1_OCTET_STRING_new(); |
| p7->d.signed_and_enveloped->enc_data->enc_data = os; |
| } |
| break; |
| |
| case NID_pkcs7_enveloped: |
| os = p7->d.enveloped->enc_data->enc_data; |
| if (os == NULL) { |
| os = ASN1_OCTET_STRING_new(); |
| p7->d.enveloped->enc_data->enc_data = os; |
| } |
| break; |
| |
| case NID_pkcs7_signed: |
| os = p7->d.sign->contents->d.data; |
| break; |
| |
| default: |
| os = NULL; |
| break; |
| } |
| |
| if (os == NULL) |
| return 0; |
| |
| os->flags |= ASN1_STRING_FLAG_NDEF; |
| *boundary = &os->data; |
| |
| return 1; |
| } |
