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Diffstat (limited to 'app/openssl/crypto/pkcs7/pk7_doit.c')
-rw-r--r--app/openssl/crypto/pkcs7/pk7_doit.c1305
1 files changed, 0 insertions, 1305 deletions
diff --git a/app/openssl/crypto/pkcs7/pk7_doit.c b/app/openssl/crypto/pkcs7/pk7_doit.c
deleted file mode 100644
index d91aa116..00000000
--- a/app/openssl/crypto/pkcs7/pk7_doit.c
+++ /dev/null
@@ -1,1305 +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 = -1;
-
- pctx = EVP_PKEY_CTX_new(pkey, NULL);
- if (!pctx)
- return -1;
-
- 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)
- {
- ret = 0;
- PKCS7err(PKCS7_F_PKCS7_DECRYPT_RINFO, ERR_R_EVP_LIB);
- goto err;
- }
-
- ret = 1;
-
- if (*pek)
- {
- OPENSSL_cleanse(*pek, *peklen);
- OPENSSL_free(*pek);
- }
-
- *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;
- unsigned char *ek = NULL, *tkey = NULL;
- int eklen = 0, tkeylen = 0;
-
- 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);
- if (!PKCS7_is_detached(p7) && data_body == NULL)
- {
- PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_INVALID_SIGNED_DATA_TYPE);
- goto err;
- }
- 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
-
- 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)
- {
- /* Always attempt to decrypt all rinfo even
- * after sucess as a defence against MMA timing
- * attacks.
- */
- 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)
- goto err;
- ERR_clear_error();
- }
- }
- else
- {
- /* Only exit on fatal errors, not decrypt failure */
- if (pkcs7_decrypt_rinfo(&ek, &eklen, ri, pkey) < 0)
- goto err;
- ERR_clear_error();
- }
-
- 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;
- /* Generate random key as MMA defence */
- tkeylen = EVP_CIPHER_CTX_key_length(evp_ctx);
- tkey = OPENSSL_malloc(tkeylen);
- if (!tkey)
- goto err;
- if (EVP_CIPHER_CTX_rand_key(evp_ctx, tkey) <= 0)
- goto err;
- if (ek == NULL)
- {
- ek = tkey;
- eklen = tkeylen;
- tkey = NULL;
- }
-
- 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))
- {
- /* Use random key as MMA defence */
- OPENSSL_cleanse(ek, eklen);
- OPENSSL_free(ek);
- ek = tkey;
- eklen = tkeylen;
- tkey = NULL;
- }
- }
- /* Clear errors so we don't leak information useful in MMA */
- ERR_clear_error();
- if (EVP_CipherInit_ex(evp_ctx,NULL,NULL,ek,NULL,0) <= 0)
- goto err;
-
- if (ek)
- {
- OPENSSL_cleanse(ek,eklen);
- OPENSSL_free(ek);
- ek = NULL;
- }
- if (tkey)
- {
- OPENSSL_cleanse(tkey,tkeylen);
- OPENSSL_free(tkey);
- tkey = NULL;
- }
-
- 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 (ek)
- {
- OPENSSL_cleanse(ek,eklen);
- OPENSSL_free(ek);
- }
- if (tkey)
- {
- OPENSSL_cleanse(tkey,tkeylen);
- OPENSSL_free(tkey);
- }
- 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 */
- if (!EVP_DigestFinal_ex(mctx, md_data,&md_len))
- {
- PKCS7err(PKCS7_F_DO_PKCS7_SIGNED_ATTRIB, ERR_R_EVP_LIB);
- return 0;
- }
- 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. */
- if (!EVP_MD_CTX_copy_ex(&ctx_tmp,mdc))
- goto err;
-
- 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;
- if (!EVP_DigestFinal_ex(mdc,md_data,&md_len))
- goto err;
- 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);
- abuf = NULL;
- 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 */
- if (!EVP_MD_CTX_copy_ex(&mdc_tmp,mdc))
- goto err;
-
- 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;
-
- if (!EVP_DigestFinal_ex(&mdc_tmp,md_dat,&md_len))
- goto err;
- 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;
- }
-
- if (!EVP_VerifyInit_ex(&mdc_tmp,EVP_get_digestbynid(md_type), NULL))
- goto err;
-
- 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;
- }
- if (!EVP_VerifyUpdate(&mdc_tmp, abuf, alen))
- goto err;
-
- 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);
- }
-