diff options
Diffstat (limited to 'openssl/crypto/pkcs7/pk7_doit.c')
| -rw-r--r-- | openssl/crypto/pkcs7/pk7_doit.c | 1248 |
1 files changed, 0 insertions, 1248 deletions
diff --git a/openssl/crypto/pkcs7/pk7_doit.c b/openssl/crypto/pkcs7/pk7_doit.c deleted file mode 100644 index 3bf1a367..00000000 --- a/openssl/crypto/pkcs7/pk7_doit.c +++ /dev/null @@ -1,1248 +0,0 @@ -/* crypto/pkcs7/pk7_doit.c */ -/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) - * All rights reserved. - * - * This package is an SSL implementation written - * by Eric Young (eay@cryptsoft.com). - * The implementation was written so as to conform with Netscapes SSL. - * - * This library is free for commercial and non-commercial use as long as - * the following conditions are aheared to. The following conditions - * apply to all code found in this distribution, be it the RC4, RSA, - * lhash, DES, etc., code; not just the SSL code. The SSL documentation - * included with this distribution is covered by the same copyright terms - * except that the holder is Tim Hudson (tjh@cryptsoft.com). - * - * Copyright remains Eric Young's, and as such any Copyright notices in - * the code are not to be removed. - * If this package is used in a product, Eric Young should be given attribution - * as the author of the parts of the library used. - * This can be in the form of a textual message at program startup or - * in documentation (online or textual) provided with the package. - * - * 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 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 acknowledgement: - * "This product includes cryptographic software written by - * Eric Young (eay@cryptsoft.com)" - * The word 'cryptographic' can be left out if the rouines from the library - * being used are not cryptographic related :-). - * 4. If you include any Windows specific code (or a derivative thereof) from - * the apps directory (application code) you must include an acknowledgement: - * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" - * - * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND - * ANY EXPRESS 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 AUTHOR OR 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. - * - * The licence and distribution terms for any publically available version or - * derivative of this code cannot be changed. i.e. this code cannot simply be - * copied and put under another distribution licence - * [including the GNU Public Licence.] - */ - -#include <stdio.h> -#include "cryptlib.h" -#include <openssl/rand.h> -#include <openssl/objects.h> -#include <openssl/x509.h> -#include <openssl/x509v3.h> -#include <openssl/err.h> - -static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype, - void *value); -static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid); - -static int PKCS7_type_is_other(PKCS7* p7) - { - int isOther=1; - - int nid=OBJ_obj2nid(p7->type); - - switch( nid ) - { - case NID_pkcs7_data: - case NID_pkcs7_signed: - case NID_pkcs7_enveloped: - case NID_pkcs7_signedAndEnveloped: - case NID_pkcs7_digest: - case NID_pkcs7_encrypted: - isOther=0; - break; - default: - isOther=1; - } - - return isOther; - - } - -static ASN1_OCTET_STRING *PKCS7_get_octet_string(PKCS7 *p7) - { - if ( PKCS7_type_is_data(p7)) - return p7->d.data; - if ( PKCS7_type_is_other(p7) && p7->d.other - && (p7->d.other->type == V_ASN1_OCTET_STRING)) - return p7->d.other->value.octet_string; - return NULL; - } - -static int PKCS7_bio_add_digest(BIO **pbio, X509_ALGOR *alg) - { - BIO *btmp; - const EVP_MD *md; - if ((btmp=BIO_new(BIO_f_md())) == NULL) - { - PKCS7err(PKCS7_F_PKCS7_BIO_ADD_DIGEST,ERR_R_BIO_LIB); - goto err; - } - - md=EVP_get_digestbyobj(alg->algorithm); - if (md == NULL) - { - PKCS7err(PKCS7_F_PKCS7_BIO_ADD_DIGEST,PKCS7_R_UNKNOWN_DIGEST_TYPE); - goto err; - } - - BIO_set_md(btmp,md); - if (*pbio == NULL) - *pbio=btmp; - else if (!BIO_push(*pbio,btmp)) - { - PKCS7err(PKCS7_F_PKCS7_BIO_ADD_DIGEST,ERR_R_BIO_LIB); - goto err; - } - btmp=NULL; - - return 1; - - err: - if (btmp) - BIO_free(btmp); - return 0; - - } - -static int pkcs7_encode_rinfo(PKCS7_RECIP_INFO *ri, - unsigned char *key, int keylen) - { - EVP_PKEY_CTX *pctx = NULL; - EVP_PKEY *pkey = NULL; - unsigned char *ek = NULL; - int ret = 0; - size_t eklen; - - pkey = X509_get_pubkey(ri->cert); - - if (!pkey) - return 0; - - pctx = EVP_PKEY_CTX_new(pkey, NULL); - if (!pctx) - return 0; - - if (EVP_PKEY_encrypt_init(pctx) <= 0) - goto err; - - if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_ENCRYPT, - EVP_PKEY_CTRL_PKCS7_ENCRYPT, 0, ri) <= 0) - { - PKCS7err(PKCS7_F_PKCS7_ENCODE_RINFO, PKCS7_R_CTRL_ERROR); - goto err; - } - - if (EVP_PKEY_encrypt(pctx, NULL, &eklen, key, keylen) <= 0) - goto err; - - ek = OPENSSL_malloc(eklen); - - if (ek == NULL) - { - PKCS7err(PKCS7_F_PKCS7_ENCODE_RINFO, ERR_R_MALLOC_FAILURE); - goto err; - } - - if (EVP_PKEY_encrypt(pctx, ek, &eklen, key, keylen) <= 0) - goto err; - - ASN1_STRING_set0(ri->enc_key, ek, eklen); - ek = NULL; - - ret = 1; - - err: - if (pkey) - EVP_PKEY_free(pkey); - if (pctx) - EVP_PKEY_CTX_free(pctx); - if (ek) - OPENSSL_free(ek); - return ret; - - } - - -static int pkcs7_decrypt_rinfo(unsigned char **pek, int *peklen, - PKCS7_RECIP_INFO *ri, EVP_PKEY *pkey) - { - EVP_PKEY_CTX *pctx = NULL; - unsigned char *ek = NULL; - size_t eklen; - - int ret = 0; - - pctx = EVP_PKEY_CTX_new(pkey, NULL); - if (!pctx) - return 0; - - if (EVP_PKEY_decrypt_init(pctx) <= 0) - goto err; - - if (EVP_PKEY_CTX_ctrl(pctx, -1, EVP_PKEY_OP_DECRYPT, - EVP_PKEY_CTRL_PKCS7_DECRYPT, 0, ri) <= 0) - { - PKCS7err(PKCS7_F_PKCS7_DECRYPT_RINFO, PKCS7_R_CTRL_ERROR); - goto err; - } - - if (EVP_PKEY_decrypt(pctx, NULL, &eklen, - ri->enc_key->data, ri->enc_key->length) <= 0) - goto err; - - ek = OPENSSL_malloc(eklen); - - if (ek == NULL) - { - PKCS7err(PKCS7_F_PKCS7_DECRYPT_RINFO, ERR_R_MALLOC_FAILURE); - goto err; - } - - if (EVP_PKEY_decrypt(pctx, ek, &eklen, - ri->enc_key->data, ri->enc_key->length) <= 0) - { - PKCS7err(PKCS7_F_PKCS7_DECRYPT_RINFO, ERR_R_EVP_LIB); - goto err; - } - - ret = 1; - - *pek = ek; - *peklen = eklen; - - err: - if (pctx) - EVP_PKEY_CTX_free(pctx); - if (!ret && ek) - OPENSSL_free(ek); - - return ret; - } - -BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio) - { - int i; - BIO *out=NULL,*btmp=NULL; - X509_ALGOR *xa = NULL; - const EVP_CIPHER *evp_cipher=NULL; - STACK_OF(X509_ALGOR) *md_sk=NULL; - STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL; - X509_ALGOR *xalg=NULL; - PKCS7_RECIP_INFO *ri=NULL; - ASN1_OCTET_STRING *os=NULL; - - i=OBJ_obj2nid(p7->type); - p7->state=PKCS7_S_HEADER; - - switch (i) - { - case NID_pkcs7_signed: - md_sk=p7->d.sign->md_algs; - os = PKCS7_get_octet_string(p7->d.sign->contents); - break; - case NID_pkcs7_signedAndEnveloped: - rsk=p7->d.signed_and_enveloped->recipientinfo; - md_sk=p7->d.signed_and_enveloped->md_algs; - xalg=p7->d.signed_and_enveloped->enc_data->algorithm; - evp_cipher=p7->d.signed_and_enveloped->enc_data->cipher; - if (evp_cipher == NULL) - { - PKCS7err(PKCS7_F_PKCS7_DATAINIT, - PKCS7_R_CIPHER_NOT_INITIALIZED); - goto err; - } - break; - case NID_pkcs7_enveloped: - rsk=p7->d.enveloped->recipientinfo; - xalg=p7->d.enveloped->enc_data->algorithm; - evp_cipher=p7->d.enveloped->enc_data->cipher; - if (evp_cipher == NULL) - { - PKCS7err(PKCS7_F_PKCS7_DATAINIT, - PKCS7_R_CIPHER_NOT_INITIALIZED); - goto err; - } - break; - case NID_pkcs7_digest: - xa = p7->d.digest->md; - os = PKCS7_get_octet_string(p7->d.digest->contents); - break; - case NID_pkcs7_data: - break; - default: - PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE); - goto err; - } - - for (i=0; i<sk_X509_ALGOR_num(md_sk); i++) - if (!PKCS7_bio_add_digest(&out, sk_X509_ALGOR_value(md_sk, i))) - goto err; - - if (xa && !PKCS7_bio_add_digest(&out, xa)) - goto err; - - if (evp_cipher != NULL) - { - unsigned char key[EVP_MAX_KEY_LENGTH]; - unsigned char iv[EVP_MAX_IV_LENGTH]; - int keylen,ivlen; - EVP_CIPHER_CTX *ctx; - - if ((btmp=BIO_new(BIO_f_cipher())) == NULL) - { - PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_BIO_LIB); - goto err; - } - BIO_get_cipher_ctx(btmp, &ctx); - keylen=EVP_CIPHER_key_length(evp_cipher); - ivlen=EVP_CIPHER_iv_length(evp_cipher); - xalg->algorithm = OBJ_nid2obj(EVP_CIPHER_type(evp_cipher)); - if (ivlen > 0) - if (RAND_pseudo_bytes(iv,ivlen) <= 0) - goto err; - if (EVP_CipherInit_ex(ctx, evp_cipher, NULL, NULL, NULL, 1)<=0) - goto err; - if (EVP_CIPHER_CTX_rand_key(ctx, key) <= 0) - goto err; - if (EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, 1) <= 0) - goto err; - - if (ivlen > 0) { - if (xalg->parameter == NULL) { - xalg->parameter = ASN1_TYPE_new(); - if (xalg->parameter == NULL) - goto err; - } - if(EVP_CIPHER_param_to_asn1(ctx, xalg->parameter) < 0) - goto err; - } - - /* Lets do the pub key stuff :-) */ - for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++) - { - ri=sk_PKCS7_RECIP_INFO_value(rsk,i); - if (pkcs7_encode_rinfo(ri, key, keylen) <= 0) - goto err; - } - OPENSSL_cleanse(key, keylen); - - if (out == NULL) - out=btmp; - else - BIO_push(out,btmp); - btmp=NULL; - } - - if (bio == NULL) - { - if (PKCS7_is_detached(p7)) - bio=BIO_new(BIO_s_null()); - else if (os && os->length > 0) - bio = BIO_new_mem_buf(os->data, os->length); - if(bio == NULL) - { - bio=BIO_new(BIO_s_mem()); - if (bio == NULL) - goto err; - BIO_set_mem_eof_return(bio,0); - } - } - if (out) - BIO_push(out,bio); - else - out = bio; - bio=NULL; - if (0) - { -err: - if (out != NULL) - BIO_free_all(out); - if (btmp != NULL) - BIO_free_all(btmp); - out=NULL; - } - return(out); - } - -static int pkcs7_cmp_ri(PKCS7_RECIP_INFO *ri, X509 *pcert) - { - int ret; - ret = X509_NAME_cmp(ri->issuer_and_serial->issuer, - pcert->cert_info->issuer); - if (ret) - return ret; - return M_ASN1_INTEGER_cmp(pcert->cert_info->serialNumber, - ri->issuer_and_serial->serial); - } - -/* int */ -BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert) - { - int i,j; - BIO *out=NULL,*btmp=NULL,*etmp=NULL,*bio=NULL; - X509_ALGOR *xa; - ASN1_OCTET_STRING *data_body=NULL; - const EVP_MD *evp_md; - const EVP_CIPHER *evp_cipher=NULL; - EVP_CIPHER_CTX *evp_ctx=NULL; - X509_ALGOR *enc_alg=NULL; - STACK_OF(X509_ALGOR) *md_sk=NULL; - STACK_OF(PKCS7_RECIP_INFO) *rsk=NULL; - PKCS7_RECIP_INFO *ri=NULL; - - i=OBJ_obj2nid(p7->type); - p7->state=PKCS7_S_HEADER; - - switch (i) - { - case NID_pkcs7_signed: - data_body=PKCS7_get_octet_string(p7->d.sign->contents); - md_sk=p7->d.sign->md_algs; - break; - case NID_pkcs7_signedAndEnveloped: - rsk=p7->d.signed_and_enveloped->recipientinfo; - md_sk=p7->d.signed_and_enveloped->md_algs; - data_body=p7->d.signed_and_enveloped->enc_data->enc_data; - enc_alg=p7->d.signed_and_enveloped->enc_data->algorithm; - evp_cipher=EVP_get_cipherbyobj(enc_alg->algorithm); - if (evp_cipher == NULL) - { - PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE); - goto err; - } - break; - case NID_pkcs7_enveloped: - rsk=p7->d.enveloped->recipientinfo; - enc_alg=p7->d.enveloped->enc_data->algorithm; - data_body=p7->d.enveloped->enc_data->enc_data; - evp_cipher=EVP_get_cipherbyobj(enc_alg->algorithm); - if (evp_cipher == NULL) - { - PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE); - goto err; - } - break; - default: - PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE); - goto err; - } - - /* We will be checking the signature */ - if (md_sk != NULL) - { - for (i=0; i<sk_X509_ALGOR_num(md_sk); i++) - { - xa=sk_X509_ALGOR_value(md_sk,i); - if ((btmp=BIO_new(BIO_f_md())) == NULL) - { - PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB); - goto err; - } - - j=OBJ_obj2nid(xa->algorithm); - evp_md=EVP_get_digestbynid(j); - if (evp_md == NULL) - { - PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNKNOWN_DIGEST_TYPE); - goto err; - } - - BIO_set_md(btmp,evp_md); - if (out == NULL) - out=btmp; - else - BIO_push(out,btmp); - btmp=NULL; - } - } - - if (evp_cipher != NULL) - { -#if 0 - unsigned char key[EVP_MAX_KEY_LENGTH]; - unsigned char iv[EVP_MAX_IV_LENGTH]; - unsigned char *p; - int keylen,ivlen; - int max; - X509_OBJECT ret; -#endif - unsigned char *ek = NULL; - int eklen; - - if ((etmp=BIO_new(BIO_f_cipher())) == NULL) - { - PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB); - goto err; - } - - /* It was encrypted, we need to decrypt the secret key - * with the private key */ - - /* Find the recipientInfo which matches the passed certificate - * (if any) - */ - - if (pcert) - { - for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++) - { - ri=sk_PKCS7_RECIP_INFO_value(rsk,i); - if (!pkcs7_cmp_ri(ri, pcert)) - break; - ri=NULL; - } - if (ri == NULL) - { - PKCS7err(PKCS7_F_PKCS7_DATADECODE, - PKCS7_R_NO_RECIPIENT_MATCHES_CERTIFICATE); - goto err; - } - } - - /* If we haven't got a certificate try each ri in turn */ - - if (pcert == NULL) - { - for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++) - { - ri=sk_PKCS7_RECIP_INFO_value(rsk,i); - if (pkcs7_decrypt_rinfo(&ek, &eklen, - ri, pkey) > 0) - break; - ERR_clear_error(); - ri = NULL; - } - if (ri == NULL) - { - PKCS7err(PKCS7_F_PKCS7_DATADECODE, - PKCS7_R_NO_RECIPIENT_MATCHES_KEY); - goto err; - } - } - else - { - if (pkcs7_decrypt_rinfo(&ek, &eklen, ri, pkey) <= 0) - goto err; - } - - evp_ctx=NULL; - BIO_get_cipher_ctx(etmp,&evp_ctx); - if (EVP_CipherInit_ex(evp_ctx,evp_cipher,NULL,NULL,NULL,0) <= 0) - goto err; - if (EVP_CIPHER_asn1_to_param(evp_ctx,enc_alg->parameter) < 0) - goto err; - - if (eklen != EVP_CIPHER_CTX_key_length(evp_ctx)) { - /* Some S/MIME clients don't use the same key - * and effective key length. The key length is - * determined by the size of the decrypted RSA key. - */ - if(!EVP_CIPHER_CTX_set_key_length(evp_ctx, eklen)) - { - PKCS7err(PKCS7_F_PKCS7_DATADECODE, - PKCS7_R_DECRYPTED_KEY_IS_WRONG_LENGTH); - goto err; - } - } - if (EVP_CipherInit_ex(evp_ctx,NULL,NULL,ek,NULL,0) <= 0) - goto err; - - if (ek) - { - OPENSSL_cleanse(ek,eklen); - OPENSSL_free(ek); - } - - if (out == NULL) - out=etmp; - else - BIO_push(out,etmp); - etmp=NULL; - } - -#if 1 - if (PKCS7_is_detached(p7) || (in_bio != NULL)) - { - bio=in_bio; - } - else - { -#if 0 - bio=BIO_new(BIO_s_mem()); - /* We need to set this so that when we have read all - * the data, the encrypt BIO, if present, will read - * EOF and encode the last few bytes */ - BIO_set_mem_eof_return(bio,0); - - if (data_body->length > 0) - BIO_write(bio,(char *)data_body->data,data_body->length); -#else - if (data_body->length > 0) - bio = BIO_new_mem_buf(data_body->data,data_body->length); - else { - bio=BIO_new(BIO_s_mem()); - BIO_set_mem_eof_return(bio,0); - } - if (bio == NULL) - goto err; -#endif - } - BIO_push(out,bio); - bio=NULL; -#endif - if (0) - { -err: - if (out != NULL) BIO_free_all(out); - if (btmp != NULL) BIO_free_all(btmp); - if (etmp != NULL) BIO_free_all(etmp); - if (bio != NULL) BIO_free_all(bio); - out=NULL; - } - return(out); - } - -static BIO *PKCS7_find_digest(EVP_MD_CTX **pmd, BIO *bio, int nid) - { - for (;;) - { - bio=BIO_find_type(bio,BIO_TYPE_MD); - if (bio == NULL) - { - PKCS7err(PKCS7_F_PKCS7_FIND_DIGEST,PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST); - return NULL; - } - BIO_get_md_ctx(bio,pmd); - if (*pmd == NULL) - { - PKCS7err(PKCS7_F_PKCS7_FIND_DIGEST,ERR_R_INTERNAL_ERROR); - return NULL; - } - if (EVP_MD_CTX_type(*pmd) == nid) - return bio; - bio=BIO_next(bio); - } - return NULL; - } - -static int do_pkcs7_signed_attrib(PKCS7_SIGNER_INFO *si, EVP_MD_CTX *mctx) - { - unsigned char md_data[EVP_MAX_MD_SIZE]; - unsigned int md_len; - - /* Add signing time if not already present */ - if (!PKCS7_get_signed_attribute(si, NID_pkcs9_signingTime)) - { - if (!PKCS7_add0_attrib_signing_time(si, NULL)) - { - PKCS7err(PKCS7_F_DO_PKCS7_SIGNED_ATTRIB, - ERR_R_MALLOC_FAILURE); - return 0; - } - } - - /* Add digest */ - EVP_DigestFinal_ex(mctx, md_data,&md_len); - if (!PKCS7_add1_attrib_digest(si, md_data, md_len)) - { - PKCS7err(PKCS7_F_DO_PKCS7_SIGNED_ATTRIB, ERR_R_MALLOC_FAILURE); - return 0; - } - - /* Now sign the attributes */ - if (!PKCS7_SIGNER_INFO_sign(si)) - return 0; - - return 1; - } - - -int PKCS7_dataFinal(PKCS7 *p7, BIO *bio) - { - int ret=0; - int i,j; - BIO *btmp; - PKCS7_SIGNER_INFO *si; - EVP_MD_CTX *mdc,ctx_tmp; - STACK_OF(X509_ATTRIBUTE) *sk; - STACK_OF(PKCS7_SIGNER_INFO) *si_sk=NULL; - ASN1_OCTET_STRING *os=NULL; - - EVP_MD_CTX_init(&ctx_tmp); - i=OBJ_obj2nid(p7->type); - p7->state=PKCS7_S_HEADER; - - switch (i) - { - case NID_pkcs7_data: - os = p7->d.data; - break; - case NID_pkcs7_signedAndEnveloped: - /* XXXXXXXXXXXXXXXX */ - si_sk=p7->d.signed_and_enveloped->signer_info; - os = p7->d.signed_and_enveloped->enc_data->enc_data; - if (!os) - { - os=M_ASN1_OCTET_STRING_new(); - if (!os) - { - PKCS7err(PKCS7_F_PKCS7_DATAFINAL,ERR_R_MALLOC_FAILURE); - goto err; - } - p7->d.signed_and_enveloped->enc_data->enc_data=os; - } - break; - case NID_pkcs7_enveloped: - /* XXXXXXXXXXXXXXXX */ - os = p7->d.enveloped->enc_data->enc_data; - if (!os) - { - os=M_ASN1_OCTET_STRING_new(); - if (!os) - { - PKCS7err(PKCS7_F_PKCS7_DATAFINAL,ERR_R_MALLOC_FAILURE); - goto err; - } - p7->d.enveloped->enc_data->enc_data=os; - } - break; - case NID_pkcs7_signed: - si_sk=p7->d.sign->signer_info; - os=PKCS7_get_octet_string(p7->d.sign->contents); - /* If detached data then the content is excluded */ - if(PKCS7_type_is_data(p7->d.sign->contents) && p7->detached) { - M_ASN1_OCTET_STRING_free(os); - p7->d.sign->contents->d.data = NULL; - } - break; - - case NID_pkcs7_digest: - os=PKCS7_get_octet_string(p7->d.digest->contents); - /* If detached data then the content is excluded */ - if(PKCS7_type_is_data(p7->d.digest->contents) && p7->detached) - { - M_ASN1_OCTET_STRING_free(os); - p7->d.digest->contents->d.data = NULL; - } - break; - - default: - PKCS7err(PKCS7_F_PKCS7_DATAFINAL,PKCS7_R_UNSUPPORTED_CONTENT_TYPE); - goto err; - } - - if (si_sk != NULL) - { - for (i=0; i<sk_PKCS7_SIGNER_INFO_num(si_sk); i++) - { - si=sk_PKCS7_SIGNER_INFO_value(si_sk,i); - if (si->pkey == NULL) - continue; - - j = OBJ_obj2nid(si->digest_alg->algorithm); - - btmp=bio; - - btmp = PKCS7_find_digest(&mdc, btmp, j); - - if (btmp == NULL) - goto err; - - /* We now have the EVP_MD_CTX, lets do the - * signing. */ - EVP_MD_CTX_copy_ex(&ctx_tmp,mdc); - - sk=si->auth_attr; - - /* If there are attributes, we add the digest - * attribute and only sign the attributes */ - if (sk_X509_ATTRIBUTE_num(sk) > 0) - { - if (!do_pkcs7_signed_attrib(si, &ctx_tmp)) - goto err; - } - else - { - unsigned char *abuf = NULL; - unsigned int abuflen; - abuflen = EVP_PKEY_size(si->pkey); - abuf = OPENSSL_malloc(abuflen); - if (!abuf) - goto err; - - if (!EVP_SignFinal(&ctx_tmp, abuf, &abuflen, - si->pkey)) - { - PKCS7err(PKCS7_F_PKCS7_DATAFINAL, - ERR_R_EVP_LIB); - goto err; - } - ASN1_STRING_set0(si->enc_digest, abuf, abuflen); - } - } - } - else if (i == NID_pkcs7_digest) - { - unsigned char md_data[EVP_MAX_MD_SIZE]; - unsigned int md_len; - if (!PKCS7_find_digest(&mdc, bio, - OBJ_obj2nid(p7->d.digest->md->algorithm))) - goto err; - EVP_DigestFinal_ex(mdc,md_data,&md_len); - M_ASN1_OCTET_STRING_set(p7->d.digest->digest, md_data, md_len); - } - - if (!PKCS7_is_detached(p7) && !(os->flags & ASN1_STRING_FLAG_NDEF)) - { - char *cont; - long contlen; - btmp=BIO_find_type(bio,BIO_TYPE_MEM); - if (btmp == NULL) - { - PKCS7err(PKCS7_F_PKCS7_DATAFINAL,PKCS7_R_UNABLE_TO_FIND_MEM_BIO); - goto err; - } - contlen = BIO_get_mem_data(btmp, &cont); - /* Mark the BIO read only then we can use its copy of the data - * instead of making an extra copy. - */ - BIO_set_flags(btmp, BIO_FLAGS_MEM_RDONLY); - BIO_set_mem_eof_return(btmp, 0); - ASN1_STRING_set0(os, (unsigned char *)cont, contlen); - } - ret=1; -err: - EVP_MD_CTX_cleanup(&ctx_tmp); - return(ret); - } - -int PKCS7_SIGNER_INFO_sign(PKCS7_SIGNER_INFO *si) - { - EVP_MD_CTX mctx; - EVP_PKEY_CTX *pctx; - unsigned char *abuf = NULL; - int alen; - size_t siglen; - const EVP_MD *md = NULL; - - md = EVP_get_digestbyobj(si->digest_alg->algorithm); - if (md == NULL) - return 0; - - 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_PKCS7_SIGN, 0, si) <= 0) - { - PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SIGN, PKCS7_R_CTRL_ERROR); - goto err; - } - - alen = ASN1_item_i2d((ASN1_VALUE *)si->auth_attr,&abuf, - ASN1_ITEM_rptr(PKCS7_ATTR_SIGN)); - if(!abuf) - goto err; - if (EVP_DigestSignUpdate(&mctx,abuf,alen) <= 0) - goto err; - OPENSSL_free(abuf); - if (EVP_DigestSignFinal(&mctx, NULL, &siglen) <= 0) - goto err; - 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_PKCS7_SIGN, 1, si) <= 0) - { - PKCS7err(PKCS7_F_PKCS7_SIGNER_INFO_SIGN, PKCS7_R_CTRL_ERROR); - goto err; - } - - EVP_MD_CTX_cleanup(&mctx); - - ASN1_STRING_set0(si->enc_digest, abuf, siglen); - - return 1; - - err: - if (abuf) - OPENSSL_free(abuf); - EVP_MD_CTX_cleanup(&mctx); - return 0; - - } - -int PKCS7_dataVerify(X509_STORE *cert_store, X509_STORE_CTX *ctx, BIO *bio, - PKCS7 *p7, PKCS7_SIGNER_INFO *si) - { - PKCS7_ISSUER_AND_SERIAL *ias; - int ret=0,i; - STACK_OF(X509) *cert; - X509 *x509; - - if (PKCS7_type_is_signed(p7)) - { - cert=p7->d.sign->cert; - } - else if (PKCS7_type_is_signedAndEnveloped(p7)) - { - cert=p7->d.signed_and_enveloped->cert; - } - else - { - PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_WRONG_PKCS7_TYPE); - goto err; - } - /* XXXXXXXXXXXXXXXXXXXXXXX */ - ias=si->issuer_and_serial; - - x509=X509_find_by_issuer_and_serial(cert,ias->issuer,ias->serial); - - /* were we able to find the cert in passed to us */ - if (x509 == NULL) - { - PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_UNABLE_TO_FIND_CERTIFICATE); - goto err; - } - - /* Lets verify */ - if(!X509_STORE_CTX_init(ctx,cert_store,x509,cert)) - { - PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,ERR_R_X509_LIB); - goto err; - } - X509_STORE_CTX_set_purpose(ctx, X509_PURPOSE_SMIME_SIGN); - i=X509_verify_cert(ctx); - if (i <= 0) - { - PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,ERR_R_X509_LIB); - X509_STORE_CTX_cleanup(ctx); - goto err; - } - X509_STORE_CTX_cleanup(ctx); - - return PKCS7_signatureVerify(bio, p7, si, x509); - err: - return ret; - } - -int PKCS7_signatureVerify(BIO *bio, PKCS7 *p7, PKCS7_SIGNER_INFO *si, - X509 *x509) - { - ASN1_OCTET_STRING *os; - EVP_MD_CTX mdc_tmp,*mdc; - int ret=0,i; - int md_type; - STACK_OF(X509_ATTRIBUTE) *sk; - BIO *btmp; - EVP_PKEY *pkey; - - EVP_MD_CTX_init(&mdc_tmp); - - if (!PKCS7_type_is_signed(p7) && - !PKCS7_type_is_signedAndEnveloped(p7)) { - PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY, - PKCS7_R_WRONG_PKCS7_TYPE); - goto err; - } - - md_type=OBJ_obj2nid(si->digest_alg->algorithm); - - btmp=bio; - for (;;) - { - if ((btmp == NULL) || - ((btmp=BIO_find_type(btmp,BIO_TYPE_MD)) == NULL)) - { - PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY, - PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST); - goto err; - } - BIO_get_md_ctx(btmp,&mdc); - if (mdc == NULL) - { - PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY, - ERR_R_INTERNAL_ERROR); - goto err; - } - if (EVP_MD_CTX_type(mdc) == md_type) - break; - /* Workaround for some broken clients that put the signature - * OID instead of the digest OID in digest_alg->algorithm - */ - if (EVP_MD_pkey_type(EVP_MD_CTX_md(mdc)) == md_type) - break; - btmp=BIO_next(btmp); - } - - /* mdc is the digest ctx that we want, unless there are attributes, - * in which case the digest is the signed attributes */ - EVP_MD_CTX_copy_ex(&mdc_tmp,mdc); - - sk=si->auth_attr; - if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0)) - { - unsigned char md_dat[EVP_MAX_MD_SIZE], *abuf = NULL; - unsigned int md_len; - int alen; - ASN1_OCTET_STRING *message_digest; - - EVP_DigestFinal_ex(&mdc_tmp,md_dat,&md_len); - message_digest=PKCS7_digest_from_attributes(sk); - if (!message_digest) - { - PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY, - PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST); - goto err; - } - if ((message_digest->length != (int)md_len) || - (memcmp(message_digest->data,md_dat,md_len))) - { -#if 0 -{ -int ii; -for (ii=0; ii<message_digest->length; ii++) - printf("%02X",message_digest->data[ii]); printf(" sent\n"); -for (ii=0; ii<md_len; ii++) printf("%02X",md_dat[ii]); printf(" calc\n"); -} -#endif - PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY, - PKCS7_R_DIGEST_FAILURE); - ret= -1; - goto err; - } - - EVP_VerifyInit_ex(&mdc_tmp,EVP_get_digestbynid(md_type), NULL); - - alen = ASN1_item_i2d((ASN1_VALUE *)sk, &abuf, - ASN1_ITEM_rptr(PKCS7_ATTR_VERIFY)); - if (alen <= 0) - { - PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,ERR_R_ASN1_LIB); - ret = -1; - goto err; - } - EVP_VerifyUpdate(&mdc_tmp, abuf, alen); - - OPENSSL_free(abuf); - } - - os=si->enc_digest; - pkey = X509_get_pubkey(x509); - if (!pkey) - { - ret = -1; - goto err; - } - - i=EVP_VerifyFinal(&mdc_tmp,os->data,os->length, pkey); - EVP_PKEY_free(pkey); - if (i <= 0) - { - PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY, - PKCS7_R_SIGNATURE_FAILURE); - ret= -1; - goto err; - } - else - ret=1; -err: - EVP_MD_CTX_cleanup(&mdc_tmp); - return(ret); - } - -PKCS7_ISSUER_AND_SERIAL *PKCS7_get_issuer_and_serial(PKCS7 *p7, int idx) - { - STACK_OF(PKCS7_RECIP_INFO) *rsk; - PKCS7_RECIP_INFO *ri; - int i; - - i=OBJ_obj2nid(p7->type); - if (i != NID_pkcs7_signedAndEnveloped) - return NULL; - if (p7->d.signed_and_enveloped == NULL) - return NULL; - rsk=p7->d.signed_and_enveloped->recipientinfo; - if (rsk == NULL) - return NULL; - ri=sk_PKCS7_RECIP_INFO_value(rsk,0); - if (sk_PKCS7_RECIP_INFO_num(rsk) <= idx) return(NULL); - ri=sk_PKCS7_RECIP_INFO_value(rsk,idx); - return(ri->issuer_and_serial); - } - -ASN1_TYPE *PKCS7_get_signed_attribute(PKCS7_SIGNER_INFO *si, int nid) - { - return(get_attribute(si->auth_attr,nid)); - } - -ASN1_TYPE *PKCS7_get_attribute(PKCS7_SIGNER_INFO *si, int nid) - { - return(get_attribute(si->unauth_attr,nid)); - } - -static ASN1_TYPE *get_attribute(STACK_OF(X509_ATTRIBUTE) *sk, int nid) - { - int i; - X509_ATTRIBUTE *xa; - ASN1_OBJECT *o; - - o=OBJ_nid2obj(nid); - if (!o || !sk) return(NULL); - for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++) - { - xa=sk_X509_ATTRIBUTE_value(sk,i); - if (OBJ_cmp(xa->object,o) == 0) - { - if (!xa->single && sk_ASN1_TYPE_num(xa->value.set)) - return(sk_ASN1_TYPE_value(xa->value.set,0)); - else - return(NULL); - } - } - return(NULL); - } - -ASN1_OCTET_STRING *PKCS7_digest_from_attributes(STACK_OF(X509_ATTRIBUTE) *sk) -{ - ASN1_TYPE *astype; - if(!(astype = get_attribute(sk, NID_pkcs9_messageDigest))) return NULL; - return astype->value.octet_string; -} - -int PKCS7_set_signed_attributes(PKCS7_SIGNER_INFO *p7si, - STACK_OF(X509_ATTRIBUTE) *sk) - { - int i; - - if (p7si->auth_attr != NULL) - sk_X509_ATTRIBUTE_pop_free(p7si->auth_attr,X509_ATTRIBUTE_free); - p7si->auth_attr=sk_X509_ATTRIBUTE_dup(sk); - if (p7si->auth_attr == NULL) - return 0; - for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++) - { - if ((sk_X509_ATTRIBUTE_set(p7si->auth_attr,i, - X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk,i)))) - == NULL) - return(0); - } - return(1); - } - -int PKCS7_set_attributes(PKCS7_SIGNER_INFO *p7si, STACK_OF(X509_ATTRIBUTE) *sk) - { - int i; - - if (p7si->unauth_attr != NULL) - sk_X509_ATTRIBUTE_pop_free(p7si->unauth_attr, - X509_ATTRIBUTE_free); - p7si->unauth_attr=sk_X509_ATTRIBUTE_dup(sk); - if (p7si->unauth_attr == NULL) - return 0; - for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++) - { - if ((sk_X509_ATTRIBUTE_set(p7si->unauth_attr,i, - X509_ATTRIBUTE_dup(sk_X509_ATTRIBUTE_value(sk,i)))) - == NULL) - return(0); - } - return(1); - } - -int PKCS7_add_signed_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype, - void *value) - { - return(add_attribute(&(p7si->auth_attr),nid,atrtype,value)); - } - -int PKCS7_add_attribute(PKCS7_SIGNER_INFO *p7si, int nid, int atrtype, - void *value) - { - return(add_attribute(&(p7si->unauth_attr),nid,atrtype,value)); - } - -static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype, - void *value) - { - X509_ATTRIBUTE *attr=NULL; - - if (*sk == NULL) - { - *sk = sk_X509_ATTRIBUTE_new_null(); - if (*sk == NULL) - return 0; -new_attrib: - if (!(attr=X509_ATTRIBUTE_create(nid,atrtype,value))) - return 0; - if (!sk_X509_ATTRIBUTE_push(*sk,attr)) - { - X509_ATTRIBUTE_free(attr); - return 0; - } - } - else - { - int i; - - for (i=0; i<sk_X509_ATTRIBUTE_num(*sk); i++) - { - attr=sk_X509_ATTRIBUTE_value(*sk,i); - if (OBJ_obj2nid(attr->object) == nid) - { - X509_ATTRIBUTE_free(attr); - attr=X509_ATTRIBUTE_create(nid,atrtype,value); - if (attr == NULL) - return 0; - if (!sk_X509_ATTRIBUTE_set(*sk,i,attr)) - { - X509_ATTRIBUTE_free(attr); - return 0; - } - goto end; - } - } - goto new_attrib; - } -end: - return(1); - } - |