mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-04 13:23:26 +01:00
977 lines
27 KiB
C
977 lines
27 KiB
C
/*
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* Copyright 2008-2023 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include "internal/cryptlib.h"
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#include <openssl/asn1t.h>
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#include <openssl/x509.h>
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#include <openssl/x509v3.h>
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#include <openssl/err.h>
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#include <openssl/cms.h>
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#include "cms_local.h"
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#include "crypto/asn1.h"
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static BIO *cms_get_text_bio(BIO *out, unsigned int flags)
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{
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BIO *rbio;
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if (out == NULL)
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rbio = BIO_new(BIO_s_null());
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else if (flags & CMS_TEXT) {
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rbio = BIO_new(BIO_s_mem());
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BIO_set_mem_eof_return(rbio, 0);
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} else
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rbio = out;
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return rbio;
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}
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static int cms_copy_content(BIO *out, BIO *in, unsigned int flags)
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{
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unsigned char buf[4096];
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int r = 0, i;
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BIO *tmpout;
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tmpout = cms_get_text_bio(out, flags);
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if (tmpout == NULL) {
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ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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/* Read all content through chain to process digest, decrypt etc */
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for (;;) {
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i = BIO_read(in, buf, sizeof(buf));
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if (i <= 0) {
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if (BIO_method_type(in) == BIO_TYPE_CIPHER) {
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if (BIO_get_cipher_status(in) <= 0)
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goto err;
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}
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if (i < 0)
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goto err;
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break;
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}
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if (tmpout != NULL && (BIO_write(tmpout, buf, i) != i))
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goto err;
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}
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if (flags & CMS_TEXT) {
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if (!SMIME_text(tmpout, out)) {
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ERR_raise(ERR_LIB_CMS, CMS_R_SMIME_TEXT_ERROR);
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goto err;
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}
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}
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r = 1;
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err:
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if (tmpout != out)
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BIO_free(tmpout);
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return r;
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}
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static int check_content(CMS_ContentInfo *cms)
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{
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ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
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if (pos == NULL || *pos == NULL) {
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ERR_raise(ERR_LIB_CMS, CMS_R_NO_CONTENT);
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return 0;
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}
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return 1;
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}
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static void do_free_upto(BIO *f, BIO *upto)
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{
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if (upto != NULL) {
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BIO *tbio;
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do {
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tbio = BIO_pop(f);
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BIO_free(f);
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f = tbio;
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} while (f != NULL && f != upto);
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} else {
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BIO_free_all(f);
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}
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}
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int CMS_data(CMS_ContentInfo *cms, BIO *out, unsigned int flags)
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{
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BIO *cont;
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int r;
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if (OBJ_obj2nid(CMS_get0_type(cms)) != NID_pkcs7_data) {
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ERR_raise(ERR_LIB_CMS, CMS_R_TYPE_NOT_DATA);
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return 0;
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}
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cont = CMS_dataInit(cms, NULL);
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if (cont == NULL)
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return 0;
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r = cms_copy_content(out, cont, flags);
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BIO_free_all(cont);
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return r;
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}
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CMS_ContentInfo *CMS_data_create_ex(BIO *in, unsigned int flags,
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OSSL_LIB_CTX *libctx, const char *propq)
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{
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CMS_ContentInfo *cms = ossl_cms_Data_create(libctx, propq);
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if (cms == NULL)
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return NULL;
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if ((flags & CMS_STREAM) || CMS_final(cms, in, NULL, flags))
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return cms;
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CMS_ContentInfo_free(cms);
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return NULL;
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}
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CMS_ContentInfo *CMS_data_create(BIO *in, unsigned int flags)
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{
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return CMS_data_create_ex(in, flags, NULL, NULL);
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}
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int CMS_digest_verify(CMS_ContentInfo *cms, BIO *dcont, BIO *out,
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unsigned int flags)
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{
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BIO *cont;
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int r;
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if (OBJ_obj2nid(CMS_get0_type(cms)) != NID_pkcs7_digest) {
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ERR_raise(ERR_LIB_CMS, CMS_R_TYPE_NOT_DIGESTED_DATA);
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return 0;
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}
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if (dcont == NULL && !check_content(cms))
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return 0;
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cont = CMS_dataInit(cms, dcont);
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if (cont == NULL)
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return 0;
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r = cms_copy_content(out, cont, flags);
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if (r)
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r = ossl_cms_DigestedData_do_final(cms, cont, 1);
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do_free_upto(cont, dcont);
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return r;
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}
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CMS_ContentInfo *CMS_digest_create_ex(BIO *in, const EVP_MD *md,
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unsigned int flags, OSSL_LIB_CTX *ctx,
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const char *propq)
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{
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CMS_ContentInfo *cms;
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/*
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* Because the EVP_MD is cached and can be a legacy algorithm, we
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* cannot fetch the algorithm if it isn't supplied.
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*/
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if (md == NULL)
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md = EVP_sha1();
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cms = ossl_cms_DigestedData_create(md, ctx, propq);
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if (cms == NULL)
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return NULL;
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if (!(flags & CMS_DETACHED))
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CMS_set_detached(cms, 0);
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if ((flags & CMS_STREAM) || CMS_final(cms, in, NULL, flags))
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return cms;
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CMS_ContentInfo_free(cms);
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return NULL;
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}
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CMS_ContentInfo *CMS_digest_create(BIO *in, const EVP_MD *md,
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unsigned int flags)
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{
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return CMS_digest_create_ex(in, md, flags, NULL, NULL);
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}
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int CMS_EncryptedData_decrypt(CMS_ContentInfo *cms,
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const unsigned char *key, size_t keylen,
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BIO *dcont, BIO *out, unsigned int flags)
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{
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BIO *cont;
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int r;
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if (OBJ_obj2nid(CMS_get0_type(cms)) != NID_pkcs7_encrypted) {
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ERR_raise(ERR_LIB_CMS, CMS_R_TYPE_NOT_ENCRYPTED_DATA);
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return 0;
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}
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if (dcont == NULL && !check_content(cms))
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return 0;
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if (CMS_EncryptedData_set1_key(cms, NULL, key, keylen) <= 0)
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return 0;
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cont = CMS_dataInit(cms, dcont);
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if (cont == NULL)
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return 0;
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r = cms_copy_content(out, cont, flags);
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do_free_upto(cont, dcont);
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return r;
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}
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CMS_ContentInfo *CMS_EncryptedData_encrypt_ex(BIO *in, const EVP_CIPHER *cipher,
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const unsigned char *key,
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size_t keylen, unsigned int flags,
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OSSL_LIB_CTX *libctx,
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const char *propq)
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{
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CMS_ContentInfo *cms;
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if (cipher == NULL) {
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ERR_raise(ERR_LIB_CMS, CMS_R_NO_CIPHER);
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return NULL;
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}
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cms = CMS_ContentInfo_new_ex(libctx, propq);
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if (cms == NULL)
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return NULL;
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if (!CMS_EncryptedData_set1_key(cms, cipher, key, keylen))
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return NULL;
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if (!(flags & CMS_DETACHED))
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CMS_set_detached(cms, 0);
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if ((flags & (CMS_STREAM | CMS_PARTIAL))
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|| CMS_final(cms, in, NULL, flags))
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return cms;
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CMS_ContentInfo_free(cms);
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return NULL;
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}
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CMS_ContentInfo *CMS_EncryptedData_encrypt(BIO *in, const EVP_CIPHER *cipher,
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const unsigned char *key,
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size_t keylen, unsigned int flags)
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{
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return CMS_EncryptedData_encrypt_ex(in, cipher, key, keylen, flags, NULL,
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NULL);
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}
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static int cms_signerinfo_verify_cert(CMS_SignerInfo *si,
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X509_STORE *store,
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STACK_OF(X509) *certs,
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STACK_OF(X509_CRL) *crls,
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STACK_OF(X509) **chain,
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const CMS_CTX *cms_ctx)
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{
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X509_STORE_CTX *ctx;
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X509 *signer;
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int i, j, r = 0;
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ctx = X509_STORE_CTX_new_ex(ossl_cms_ctx_get0_libctx(cms_ctx),
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ossl_cms_ctx_get0_propq(cms_ctx));
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if (ctx == NULL) {
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ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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CMS_SignerInfo_get0_algs(si, NULL, &signer, NULL, NULL);
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if (!X509_STORE_CTX_init(ctx, store, signer, certs)) {
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ERR_raise(ERR_LIB_CMS, CMS_R_STORE_INIT_ERROR);
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goto err;
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}
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X509_STORE_CTX_set_default(ctx, "smime_sign");
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if (crls != NULL)
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X509_STORE_CTX_set0_crls(ctx, crls);
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i = X509_verify_cert(ctx);
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if (i <= 0) {
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j = X509_STORE_CTX_get_error(ctx);
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ERR_raise_data(ERR_LIB_CMS, CMS_R_CERTIFICATE_VERIFY_ERROR,
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"Verify error: %s", X509_verify_cert_error_string(j));
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goto err;
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}
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r = 1;
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/* also send back the trust chain when required */
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if (chain != NULL)
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*chain = X509_STORE_CTX_get1_chain(ctx);
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err:
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X509_STORE_CTX_free(ctx);
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return r;
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}
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int CMS_verify(CMS_ContentInfo *cms, STACK_OF(X509) *certs,
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X509_STORE *store, BIO *dcont, BIO *out, unsigned int flags)
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{
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CMS_SignerInfo *si;
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STACK_OF(CMS_SignerInfo) *sinfos;
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STACK_OF(X509) *cms_certs = NULL;
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STACK_OF(X509_CRL) *crls = NULL;
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STACK_OF(X509) **si_chains = NULL;
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X509 *signer;
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int i, scount = 0, ret = 0;
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BIO *cmsbio = NULL, *tmpin = NULL, *tmpout = NULL;
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int cadesVerify = (flags & CMS_CADES) != 0;
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const CMS_CTX *ctx = ossl_cms_get0_cmsctx(cms);
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if (dcont == NULL && !check_content(cms))
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return 0;
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if (dcont != NULL && !(flags & CMS_BINARY)) {
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const ASN1_OBJECT *coid = CMS_get0_eContentType(cms);
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if (OBJ_obj2nid(coid) == NID_id_ct_asciiTextWithCRLF)
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flags |= CMS_ASCIICRLF;
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}
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/* Attempt to find all signer certificates */
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sinfos = CMS_get0_SignerInfos(cms);
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if (sk_CMS_SignerInfo_num(sinfos) <= 0) {
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ERR_raise(ERR_LIB_CMS, CMS_R_NO_SIGNERS);
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goto err;
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}
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for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
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si = sk_CMS_SignerInfo_value(sinfos, i);
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CMS_SignerInfo_get0_algs(si, NULL, &signer, NULL, NULL);
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if (signer)
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scount++;
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}
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if (scount != sk_CMS_SignerInfo_num(sinfos))
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scount += CMS_set1_signers_certs(cms, certs, flags);
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if (scount != sk_CMS_SignerInfo_num(sinfos)) {
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ERR_raise(ERR_LIB_CMS, CMS_R_SIGNER_CERTIFICATE_NOT_FOUND);
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goto err;
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}
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/* Attempt to verify all signers certs */
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/* at this point scount == sk_CMS_SignerInfo_num(sinfos) */
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if ((flags & CMS_NO_SIGNER_CERT_VERIFY) == 0 || cadesVerify) {
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if (cadesVerify) {
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/* Certificate trust chain is required to check CAdES signature */
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si_chains = OPENSSL_zalloc(scount * sizeof(si_chains[0]));
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if (si_chains == NULL) {
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ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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}
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cms_certs = CMS_get1_certs(cms);
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if (!(flags & CMS_NOCRL))
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crls = CMS_get1_crls(cms);
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for (i = 0; i < scount; i++) {
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si = sk_CMS_SignerInfo_value(sinfos, i);
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if (!cms_signerinfo_verify_cert(si, store, cms_certs, crls,
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si_chains ? &si_chains[i] : NULL,
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ctx))
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goto err;
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}
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}
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/* Attempt to verify all SignerInfo signed attribute signatures */
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if ((flags & CMS_NO_ATTR_VERIFY) == 0 || cadesVerify) {
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for (i = 0; i < scount; i++) {
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si = sk_CMS_SignerInfo_value(sinfos, i);
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if (CMS_signed_get_attr_count(si) < 0)
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continue;
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if (CMS_SignerInfo_verify(si) <= 0)
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goto err;
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if (cadesVerify) {
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STACK_OF(X509) *si_chain = si_chains ? si_chains[i] : NULL;
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if (ossl_cms_check_signing_certs(si, si_chain) <= 0)
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goto err;
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}
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}
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}
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/*
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* Performance optimization: if the content is a memory BIO then store
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* its contents in a temporary read only memory BIO. This avoids
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* potentially large numbers of slow copies of data which will occur when
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* reading from a read write memory BIO when signatures are calculated.
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*/
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if (dcont != NULL && (BIO_method_type(dcont) == BIO_TYPE_MEM)) {
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char *ptr;
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long len;
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len = BIO_get_mem_data(dcont, &ptr);
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tmpin = (len == 0) ? dcont : BIO_new_mem_buf(ptr, len);
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if (tmpin == NULL) {
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ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
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goto err2;
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}
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} else {
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tmpin = dcont;
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}
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/*
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* If not binary mode and detached generate digests by *writing* through
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* the BIO. That makes it possible to canonicalise the input.
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*/
|
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if (!(flags & SMIME_BINARY) && dcont) {
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/*
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* Create output BIO so we can either handle text or to ensure
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* included content doesn't override detached content.
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*/
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tmpout = cms_get_text_bio(out, flags);
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if (tmpout == NULL) {
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ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
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goto err;
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}
|
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cmsbio = CMS_dataInit(cms, tmpout);
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if (cmsbio == NULL)
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goto err;
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/*
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* Don't use SMIME_TEXT for verify: it adds headers and we want to
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* remove them.
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*/
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if (!SMIME_crlf_copy(dcont, cmsbio, flags & ~SMIME_TEXT))
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goto err;
|
|
|
|
if (flags & CMS_TEXT) {
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|
if (!SMIME_text(tmpout, out)) {
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ERR_raise(ERR_LIB_CMS, CMS_R_SMIME_TEXT_ERROR);
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goto err;
|
|
}
|
|
}
|
|
} else {
|
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cmsbio = CMS_dataInit(cms, tmpin);
|
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if (cmsbio == NULL)
|
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goto err;
|
|
|
|
if (!cms_copy_content(out, cmsbio, flags))
|
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goto err;
|
|
|
|
}
|
|
if (!(flags & CMS_NO_CONTENT_VERIFY)) {
|
|
for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
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si = sk_CMS_SignerInfo_value(sinfos, i);
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if (CMS_SignerInfo_verify_content(si, cmsbio) <= 0) {
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ERR_raise(ERR_LIB_CMS, CMS_R_CONTENT_VERIFY_ERROR);
|
|
goto err;
|
|
}
|
|
}
|
|
}
|
|
|
|
ret = 1;
|
|
err:
|
|
if (!(flags & SMIME_BINARY) && dcont) {
|
|
do_free_upto(cmsbio, tmpout);
|
|
if (tmpin != dcont)
|
|
BIO_free(tmpin);
|
|
} else {
|
|
if (dcont && (tmpin == dcont))
|
|
do_free_upto(cmsbio, dcont);
|
|
else
|
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BIO_free_all(cmsbio);
|
|
}
|
|
|
|
if (out != tmpout)
|
|
BIO_free_all(tmpout);
|
|
|
|
err2:
|
|
if (si_chains != NULL) {
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|
for (i = 0; i < scount; ++i)
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sk_X509_pop_free(si_chains[i], X509_free);
|
|
OPENSSL_free(si_chains);
|
|
}
|
|
sk_X509_pop_free(cms_certs, X509_free);
|
|
sk_X509_CRL_pop_free(crls, X509_CRL_free);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int CMS_verify_receipt(CMS_ContentInfo *rcms, CMS_ContentInfo *ocms,
|
|
STACK_OF(X509) *certs,
|
|
X509_STORE *store, unsigned int flags)
|
|
{
|
|
int r;
|
|
|
|
flags &= ~(CMS_DETACHED | CMS_TEXT);
|
|
r = CMS_verify(rcms, certs, store, NULL, NULL, flags);
|
|
if (r <= 0)
|
|
return r;
|
|
return ossl_cms_Receipt_verify(rcms, ocms);
|
|
}
|
|
|
|
CMS_ContentInfo *CMS_sign_ex(X509 *signcert, EVP_PKEY *pkey,
|
|
STACK_OF(X509) *certs, BIO *data,
|
|
unsigned int flags, OSSL_LIB_CTX *libctx,
|
|
const char *propq)
|
|
{
|
|
CMS_ContentInfo *cms;
|
|
int i;
|
|
|
|
cms = CMS_ContentInfo_new_ex(libctx, propq);
|
|
if (cms == NULL || !CMS_SignedData_init(cms))
|
|
goto merr;
|
|
if (flags & CMS_ASCIICRLF
|
|
&& !CMS_set1_eContentType(cms,
|
|
OBJ_nid2obj(NID_id_ct_asciiTextWithCRLF)))
|
|
goto err;
|
|
|
|
if (pkey != NULL && !CMS_add1_signer(cms, signcert, pkey, NULL, flags)) {
|
|
ERR_raise(ERR_LIB_CMS, CMS_R_ADD_SIGNER_ERROR);
|
|
goto err;
|
|
}
|
|
|
|
for (i = 0; i < sk_X509_num(certs); i++) {
|
|
X509 *x = sk_X509_value(certs, i);
|
|
|
|
if (!CMS_add1_cert(cms, x))
|
|
goto merr;
|
|
}
|
|
|
|
if (!(flags & CMS_DETACHED))
|
|
CMS_set_detached(cms, 0);
|
|
|
|
if ((flags & (CMS_STREAM | CMS_PARTIAL))
|
|
|| CMS_final(cms, data, NULL, flags))
|
|
return cms;
|
|
else
|
|
goto err;
|
|
|
|
merr:
|
|
ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
|
|
|
|
err:
|
|
CMS_ContentInfo_free(cms);
|
|
return NULL;
|
|
}
|
|
|
|
CMS_ContentInfo *CMS_sign(X509 *signcert, EVP_PKEY *pkey, STACK_OF(X509) *certs,
|
|
BIO *data, unsigned int flags)
|
|
{
|
|
return CMS_sign_ex(signcert, pkey, certs, data, flags, NULL, NULL);
|
|
}
|
|
|
|
CMS_ContentInfo *CMS_sign_receipt(CMS_SignerInfo *si,
|
|
X509 *signcert, EVP_PKEY *pkey,
|
|
STACK_OF(X509) *certs, unsigned int flags)
|
|
{
|
|
CMS_SignerInfo *rct_si;
|
|
CMS_ContentInfo *cms = NULL;
|
|
ASN1_OCTET_STRING **pos, *os;
|
|
BIO *rct_cont = NULL;
|
|
int r = 0;
|
|
const CMS_CTX *ctx = si->cms_ctx;
|
|
|
|
flags &= ~(CMS_STREAM | CMS_TEXT);
|
|
/* Not really detached but avoids content being allocated */
|
|
flags |= CMS_PARTIAL | CMS_BINARY | CMS_DETACHED;
|
|
if (pkey == NULL || signcert == NULL) {
|
|
ERR_raise(ERR_LIB_CMS, CMS_R_NO_KEY_OR_CERT);
|
|
return NULL;
|
|
}
|
|
|
|
/* Initialize signed data */
|
|
|
|
cms = CMS_sign_ex(NULL, NULL, certs, NULL, flags,
|
|
ossl_cms_ctx_get0_libctx(ctx),
|
|
ossl_cms_ctx_get0_propq(ctx));
|
|
if (cms == NULL)
|
|
goto err;
|
|
|
|
/* Set inner content type to signed receipt */
|
|
if (!CMS_set1_eContentType(cms, OBJ_nid2obj(NID_id_smime_ct_receipt)))
|
|
goto err;
|
|
|
|
rct_si = CMS_add1_signer(cms, signcert, pkey, NULL, flags);
|
|
if (!rct_si) {
|
|
ERR_raise(ERR_LIB_CMS, CMS_R_ADD_SIGNER_ERROR);
|
|
goto err;
|
|
}
|
|
|
|
os = ossl_cms_encode_Receipt(si);
|
|
if (os == NULL)
|
|
goto err;
|
|
|
|
/* Set content to digest */
|
|
rct_cont = BIO_new_mem_buf(os->data, os->length);
|
|
if (rct_cont == NULL)
|
|
goto err;
|
|
|
|
/* Add msgSigDigest attribute */
|
|
|
|
if (!ossl_cms_msgSigDigest_add1(rct_si, si))
|
|
goto err;
|
|
|
|
/* Finalize structure */
|
|
if (!CMS_final(cms, rct_cont, NULL, flags))
|
|
goto err;
|
|
|
|
/* Set embedded content */
|
|
pos = CMS_get0_content(cms);
|
|
if (pos == NULL)
|
|
goto err;
|
|
*pos = os;
|
|
|
|
r = 1;
|
|
|
|
err:
|
|
BIO_free(rct_cont);
|
|
if (r)
|
|
return cms;
|
|
CMS_ContentInfo_free(cms);
|
|
return NULL;
|
|
|
|
}
|
|
|
|
CMS_ContentInfo *CMS_encrypt_ex(STACK_OF(X509) *certs, BIO *data,
|
|
const EVP_CIPHER *cipher, unsigned int flags,
|
|
OSSL_LIB_CTX *libctx, const char *propq)
|
|
{
|
|
CMS_ContentInfo *cms;
|
|
int i;
|
|
X509 *recip;
|
|
|
|
|
|
cms = (EVP_CIPHER_get_flags(cipher) & EVP_CIPH_FLAG_AEAD_CIPHER)
|
|
? CMS_AuthEnvelopedData_create_ex(cipher, libctx, propq)
|
|
: CMS_EnvelopedData_create_ex(cipher, libctx, propq);
|
|
if (cms == NULL)
|
|
goto merr;
|
|
for (i = 0; i < sk_X509_num(certs); i++) {
|
|
recip = sk_X509_value(certs, i);
|
|
if (!CMS_add1_recipient_cert(cms, recip, flags)) {
|
|
ERR_raise(ERR_LIB_CMS, CMS_R_RECIPIENT_ERROR);
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
if (!(flags & CMS_DETACHED))
|
|
CMS_set_detached(cms, 0);
|
|
|
|
if ((flags & (CMS_STREAM | CMS_PARTIAL))
|
|
|| CMS_final(cms, data, NULL, flags))
|
|
return cms;
|
|
else
|
|
goto err;
|
|
|
|
merr:
|
|
ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
|
|
err:
|
|
CMS_ContentInfo_free(cms);
|
|
return NULL;
|
|
}
|
|
|
|
CMS_ContentInfo *CMS_encrypt(STACK_OF(X509) *certs, BIO *data,
|
|
const EVP_CIPHER *cipher, unsigned int flags)
|
|
{
|
|
return CMS_encrypt_ex(certs, data, cipher, flags, NULL, NULL);
|
|
}
|
|
|
|
static int cms_kari_set1_pkey_and_peer(CMS_ContentInfo *cms,
|
|
CMS_RecipientInfo *ri,
|
|
EVP_PKEY *pk, X509 *cert, X509 *peer)
|
|
{
|
|
int i;
|
|
STACK_OF(CMS_RecipientEncryptedKey) *reks;
|
|
CMS_RecipientEncryptedKey *rek;
|
|
|
|
reks = CMS_RecipientInfo_kari_get0_reks(ri);
|
|
for (i = 0; i < sk_CMS_RecipientEncryptedKey_num(reks); i++) {
|
|
int rv;
|
|
|
|
rek = sk_CMS_RecipientEncryptedKey_value(reks, i);
|
|
if (cert != NULL && CMS_RecipientEncryptedKey_cert_cmp(rek, cert))
|
|
continue;
|
|
CMS_RecipientInfo_kari_set0_pkey_and_peer(ri, pk, peer);
|
|
rv = CMS_RecipientInfo_kari_decrypt(cms, ri, rek);
|
|
CMS_RecipientInfo_kari_set0_pkey(ri, NULL);
|
|
if (rv > 0)
|
|
return 1;
|
|
return cert == NULL ? 0 : -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int CMS_decrypt_set1_pkey(CMS_ContentInfo *cms, EVP_PKEY *pk, X509 *cert)
|
|
{
|
|
return CMS_decrypt_set1_pkey_and_peer(cms, pk, cert, NULL);
|
|
}
|
|
|
|
int CMS_decrypt_set1_pkey_and_peer(CMS_ContentInfo *cms, EVP_PKEY *pk,
|
|
X509 *cert, X509 *peer)
|
|
{
|
|
STACK_OF(CMS_RecipientInfo) *ris = CMS_get0_RecipientInfos(cms);
|
|
CMS_RecipientInfo *ri;
|
|
int i, r, cms_pkey_ri_type;
|
|
int debug = 0, match_ri = 0;
|
|
CMS_EncryptedContentInfo *ec = ossl_cms_get0_env_enc_content(cms);
|
|
|
|
/* Prevent mem leak on earlier CMS_decrypt_set1_{pkey_and_peer,password} */
|
|
if (ec != NULL) {
|
|
OPENSSL_clear_free(ec->key, ec->keylen);
|
|
ec->key = NULL;
|
|
ec->keylen = 0;
|
|
}
|
|
|
|
if (ris != NULL && ec != NULL)
|
|
debug = ec->debug;
|
|
|
|
cms_pkey_ri_type = ossl_cms_pkey_get_ri_type(pk);
|
|
if (cms_pkey_ri_type == CMS_RECIPINFO_NONE) {
|
|
ERR_raise(ERR_LIB_CMS, CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
|
|
return 0;
|
|
}
|
|
|
|
for (i = 0; i < sk_CMS_RecipientInfo_num(ris); i++) {
|
|
int ri_type;
|
|
|
|
ri = sk_CMS_RecipientInfo_value(ris, i);
|
|
ri_type = CMS_RecipientInfo_type(ri);
|
|
if (!ossl_cms_pkey_is_ri_type_supported(pk, ri_type))
|
|
continue;
|
|
match_ri = 1;
|
|
if (ri_type == CMS_RECIPINFO_AGREE) {
|
|
r = cms_kari_set1_pkey_and_peer(cms, ri, pk, cert, peer);
|
|
if (r > 0)
|
|
return 1;
|
|
if (r < 0)
|
|
return 0;
|
|
}
|
|
/* If we have a cert, try matching RecipientInfo, else try them all */
|
|
else if (cert == NULL || !CMS_RecipientInfo_ktri_cert_cmp(ri, cert)) {
|
|
EVP_PKEY_up_ref(pk);
|
|
CMS_RecipientInfo_set0_pkey(ri, pk);
|
|
r = CMS_RecipientInfo_decrypt(cms, ri);
|
|
CMS_RecipientInfo_set0_pkey(ri, NULL);
|
|
if (cert != NULL) {
|
|
/*
|
|
* If not debugging clear any error and return success to
|
|
* avoid leaking of information useful to MMA
|
|
*/
|
|
if (!debug) {
|
|
ERR_clear_error();
|
|
return 1;
|
|
}
|
|
if (r > 0)
|
|
return 1;
|
|
ERR_raise(ERR_LIB_CMS, CMS_R_DECRYPT_ERROR);
|
|
return 0;
|
|
}
|
|
/*
|
|
* If no cert and not debugging don't leave loop after first
|
|
* successful decrypt. Always attempt to decrypt all recipients
|
|
* to avoid leaking timing of a successful decrypt.
|
|
*/
|
|
else if (r > 0 && (debug || cms_pkey_ri_type != CMS_RECIPINFO_TRANS))
|
|
return 1;
|
|
}
|
|
}
|
|
/* If no cert, key transport and not debugging always return success */
|
|
if (cert == NULL
|
|
&& cms_pkey_ri_type == CMS_RECIPINFO_TRANS
|
|
&& match_ri
|
|
&& !debug) {
|
|
ERR_clear_error();
|
|
return 1;
|
|
}
|
|
|
|
if (!match_ri)
|
|
ERR_raise(ERR_LIB_CMS, CMS_R_NO_MATCHING_RECIPIENT);
|
|
return 0;
|
|
|
|
}
|
|
|
|
int CMS_decrypt_set1_key(CMS_ContentInfo *cms,
|
|
unsigned char *key, size_t keylen,
|
|
const unsigned char *id, size_t idlen)
|
|
{
|
|
STACK_OF(CMS_RecipientInfo) *ris;
|
|
CMS_RecipientInfo *ri;
|
|
int i, r, match_ri = 0;
|
|
|
|
ris = CMS_get0_RecipientInfos(cms);
|
|
for (i = 0; i < sk_CMS_RecipientInfo_num(ris); i++) {
|
|
ri = sk_CMS_RecipientInfo_value(ris, i);
|
|
if (CMS_RecipientInfo_type(ri) != CMS_RECIPINFO_KEK)
|
|
continue;
|
|
|
|
/* If we have an id, try matching RecipientInfo, else try them all */
|
|
if (id == NULL
|
|
|| (CMS_RecipientInfo_kekri_id_cmp(ri, id, idlen) == 0)) {
|
|
match_ri = 1;
|
|
CMS_RecipientInfo_set0_key(ri, key, keylen);
|
|
r = CMS_RecipientInfo_decrypt(cms, ri);
|
|
CMS_RecipientInfo_set0_key(ri, NULL, 0);
|
|
if (r > 0)
|
|
return 1;
|
|
if (id != NULL) {
|
|
ERR_raise(ERR_LIB_CMS, CMS_R_DECRYPT_ERROR);
|
|
return 0;
|
|
}
|
|
ERR_clear_error();
|
|
}
|
|
}
|
|
|
|
if (!match_ri)
|
|
ERR_raise(ERR_LIB_CMS, CMS_R_NO_MATCHING_RECIPIENT);
|
|
return 0;
|
|
|
|
}
|
|
|
|
int CMS_decrypt_set1_password(CMS_ContentInfo *cms,
|
|
unsigned char *pass, ossl_ssize_t passlen)
|
|
{
|
|
STACK_OF(CMS_RecipientInfo) *ris = CMS_get0_RecipientInfos(cms);
|
|
CMS_RecipientInfo *ri;
|
|
int i, r, match_ri = 0;
|
|
CMS_EncryptedContentInfo *ec = ossl_cms_get0_env_enc_content(cms);
|
|
|
|
/* Prevent mem leak on earlier CMS_decrypt_set1_{pkey_and_peer,password} */
|
|
if (ec != NULL) {
|
|
OPENSSL_clear_free(ec->key, ec->keylen);
|
|
ec->key = NULL;
|
|
ec->keylen = 0;
|
|
}
|
|
|
|
for (i = 0; i < sk_CMS_RecipientInfo_num(ris); i++) {
|
|
ri = sk_CMS_RecipientInfo_value(ris, i);
|
|
if (CMS_RecipientInfo_type(ri) != CMS_RECIPINFO_PASS)
|
|
continue;
|
|
|
|
/* Must try each PasswordRecipientInfo */
|
|
match_ri = 1;
|
|
CMS_RecipientInfo_set0_password(ri, pass, passlen);
|
|
r = CMS_RecipientInfo_decrypt(cms, ri);
|
|
CMS_RecipientInfo_set0_password(ri, NULL, 0);
|
|
if (r > 0)
|
|
return 1;
|
|
}
|
|
|
|
if (!match_ri)
|
|
ERR_raise(ERR_LIB_CMS, CMS_R_NO_MATCHING_RECIPIENT);
|
|
return 0;
|
|
|
|
}
|
|
|
|
int CMS_decrypt(CMS_ContentInfo *cms, EVP_PKEY *pk, X509 *cert,
|
|
BIO *dcont, BIO *out, unsigned int flags)
|
|
{
|
|
int r;
|
|
BIO *cont;
|
|
CMS_EncryptedContentInfo *ec;
|
|
int nid = OBJ_obj2nid(CMS_get0_type(cms));
|
|
|
|
if (nid != NID_pkcs7_enveloped
|
|
&& nid != NID_id_smime_ct_authEnvelopedData) {
|
|
ERR_raise(ERR_LIB_CMS, CMS_R_TYPE_NOT_ENVELOPED_DATA);
|
|
return 0;
|
|
}
|
|
if (dcont == NULL && !check_content(cms))
|
|
return 0;
|
|
ec = ossl_cms_get0_env_enc_content(cms);
|
|
ec->debug = (flags & CMS_DEBUG_DECRYPT) != 0;
|
|
ec->havenocert = cert == NULL;
|
|
if (pk == NULL && cert == NULL && dcont == NULL && out == NULL)
|
|
return 1;
|
|
if (pk != NULL && !CMS_decrypt_set1_pkey(cms, pk, cert))
|
|
return 0;
|
|
cont = CMS_dataInit(cms, dcont);
|
|
if (cont == NULL)
|
|
return 0;
|
|
r = cms_copy_content(out, cont, flags);
|
|
do_free_upto(cont, dcont);
|
|
return r;
|
|
}
|
|
|
|
int CMS_final(CMS_ContentInfo *cms, BIO *data, BIO *dcont, unsigned int flags)
|
|
{
|
|
BIO *cmsbio;
|
|
int ret = 0;
|
|
|
|
if ((cmsbio = CMS_dataInit(cms, dcont)) == NULL) {
|
|
ERR_raise(ERR_LIB_CMS, CMS_R_CMS_LIB);
|
|
return 0;
|
|
}
|
|
|
|
if (!SMIME_crlf_copy(data, cmsbio, flags)) {
|
|
goto err;
|
|
}
|
|
|
|
(void)BIO_flush(cmsbio);
|
|
|
|
if (!CMS_dataFinal(cms, cmsbio)) {
|
|
ERR_raise(ERR_LIB_CMS, CMS_R_CMS_DATAFINAL_ERROR);
|
|
goto err;
|
|
}
|
|
|
|
ret = 1;
|
|
|
|
err:
|
|
do_free_upto(cmsbio, dcont);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
#ifdef ZLIB
|
|
|
|
int CMS_uncompress(CMS_ContentInfo *cms, BIO *dcont, BIO *out,
|
|
unsigned int flags)
|
|
{
|
|
BIO *cont;
|
|
int r;
|
|
|
|
if (OBJ_obj2nid(CMS_get0_type(cms)) != NID_id_smime_ct_compressedData) {
|
|
ERR_raise(ERR_LIB_CMS, CMS_R_TYPE_NOT_COMPRESSED_DATA);
|
|
return 0;
|
|
}
|
|
|
|
if (dcont == NULL && !check_content(cms))
|
|
return 0;
|
|
|
|
cont = CMS_dataInit(cms, dcont);
|
|
if (cont == NULL)
|
|
return 0;
|
|
r = cms_copy_content(out, cont, flags);
|
|
do_free_upto(cont, dcont);
|
|
return r;
|
|
}
|
|
|
|
CMS_ContentInfo *CMS_compress(BIO *in, int comp_nid, unsigned int flags)
|
|
{
|
|
CMS_ContentInfo *cms;
|
|
|
|
if (comp_nid <= 0)
|
|
comp_nid = NID_zlib_compression;
|
|
cms = ossl_cms_CompressedData_create(comp_nid, NULL, NULL);
|
|
if (cms == NULL)
|
|
return NULL;
|
|
|
|
if (!(flags & CMS_DETACHED))
|
|
CMS_set_detached(cms, 0);
|
|
|
|
if ((flags & CMS_STREAM) || CMS_final(cms, in, NULL, flags))
|
|
return cms;
|
|
|
|
CMS_ContentInfo_free(cms);
|
|
return NULL;
|
|
}
|
|
|
|
#else
|
|
|
|
int CMS_uncompress(CMS_ContentInfo *cms, BIO *dcont, BIO *out,
|
|
unsigned int flags)
|
|
{
|
|
ERR_raise(ERR_LIB_CMS, CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
|
|
return 0;
|
|
}
|
|
|
|
CMS_ContentInfo *CMS_compress(BIO *in, int comp_nid, unsigned int flags)
|
|
{
|
|
ERR_raise(ERR_LIB_CMS, CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
|
|
return NULL;
|
|
}
|
|
|
|
#endif
|