pk7_lib.c
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上传日期:2020-08-09
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- /* crypto/pkcs7/pk7_lib.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/objects.h>
- #include <openssl/x509.h>
- long PKCS7_ctrl(PKCS7 *p7, int cmd, long larg, char *parg)
- {
- int nid;
- long ret;
- nid=OBJ_obj2nid(p7->type);
- switch (cmd)
- {
- case PKCS7_OP_SET_DETACHED_SIGNATURE:
- if (nid == NID_pkcs7_signed)
- {
- ret=p7->detached=(int)larg;
- if (ret && PKCS7_type_is_data(p7->d.sign->contents))
- {
- ASN1_OCTET_STRING *os;
- os=p7->d.sign->contents->d.data;
- ASN1_OCTET_STRING_free(os);
- p7->d.sign->contents->d.data = NULL;
- }
- }
- else
- {
- PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
- ret=0;
- }
- break;
- case PKCS7_OP_GET_DETACHED_SIGNATURE:
- if (nid == NID_pkcs7_signed)
- {
- if(!p7->d.sign || !p7->d.sign->contents->d.ptr)
- ret = 1;
- else ret = 0;
-
- p7->detached = ret;
- }
- else
- {
- PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_OPERATION_NOT_SUPPORTED_ON_THIS_TYPE);
- ret=0;
- }
-
- break;
- default:
- PKCS7err(PKCS7_F_PKCS7_CTRL,PKCS7_R_UNKNOWN_OPERATION);
- ret=0;
- }
- return(ret);
- }
- int PKCS7_content_new(PKCS7 *p7, int type)
- {
- PKCS7 *ret=NULL;
- if ((ret=PKCS7_new()) == NULL) goto err;
- if (!PKCS7_set_type(ret,type)) goto err;
- if (!PKCS7_set_content(p7,ret)) goto err;
- return(1);
- err:
- if (ret != NULL) PKCS7_free(ret);
- return(0);
- }
- int PKCS7_set_content(PKCS7 *p7, PKCS7 *p7_data)
- {
- int i;
- i=OBJ_obj2nid(p7->type);
- switch (i)
- {
- case NID_pkcs7_signed:
- if (p7->d.sign->contents != NULL)
- PKCS7_free(p7->d.sign->contents);
- p7->d.sign->contents=p7_data;
- break;
- case NID_pkcs7_digest:
- if (p7->d.digest->contents != NULL)
- PKCS7_free(p7->d.digest->contents);
- p7->d.digest->contents=p7_data;
- break;
- case NID_pkcs7_data:
- case NID_pkcs7_enveloped:
- case NID_pkcs7_signedAndEnveloped:
- case NID_pkcs7_encrypted:
- default:
- PKCS7err(PKCS7_F_PKCS7_SET_CONTENT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
- goto err;
- }
- return(1);
- err:
- return(0);
- }
- int PKCS7_set_type(PKCS7 *p7, int type)
- {
- ASN1_OBJECT *obj;
- /*PKCS7_content_free(p7);*/
- obj=OBJ_nid2obj(type); /* will not fail */
- switch (type)
- {
- case NID_pkcs7_signed:
- p7->type=obj;
- if ((p7->d.sign=PKCS7_SIGNED_new()) == NULL)
- goto err;
- if (!ASN1_INTEGER_set(p7->d.sign->version,1))
- {
- PKCS7_SIGNED_free(p7->d.sign);
- p7->d.sign=NULL;
- goto err;
- }
- break;
- case NID_pkcs7_data:
- p7->type=obj;
- if ((p7->d.data=M_ASN1_OCTET_STRING_new()) == NULL)
- goto err;
- break;
- case NID_pkcs7_signedAndEnveloped:
- p7->type=obj;
- if ((p7->d.signed_and_enveloped=PKCS7_SIGN_ENVELOPE_new())
- == NULL) goto err;
- ASN1_INTEGER_set(p7->d.signed_and_enveloped->version,1);
- if (!ASN1_INTEGER_set(p7->d.signed_and_enveloped->version,1))
- goto err;
- p7->d.signed_and_enveloped->enc_data->content_type
- = OBJ_nid2obj(NID_pkcs7_data);
- break;
- case NID_pkcs7_enveloped:
- p7->type=obj;
- if ((p7->d.enveloped=PKCS7_ENVELOPE_new())
- == NULL) goto err;
- if (!ASN1_INTEGER_set(p7->d.enveloped->version,0))
- goto err;
- p7->d.enveloped->enc_data->content_type
- = OBJ_nid2obj(NID_pkcs7_data);
- break;
- case NID_pkcs7_encrypted:
- p7->type=obj;
- if ((p7->d.encrypted=PKCS7_ENCRYPT_new())
- == NULL) goto err;
- if (!ASN1_INTEGER_set(p7->d.encrypted->version,0))
- goto err;
- p7->d.encrypted->enc_data->content_type
- = OBJ_nid2obj(NID_pkcs7_data);
- break;
- case NID_pkcs7_digest:
- p7->type=obj;
- if ((p7->d.digest=PKCS7_DIGEST_new())
- == NULL) goto err;
- if (!ASN1_INTEGER_set(p7->d.digest->version,0))
- goto err;
- break;
- default:
- PKCS7err(PKCS7_F_PKCS7_SET_TYPE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
- goto err;
- }
- return(1);
- err:
- return(0);
- }
- int PKCS7_set0_type_other(PKCS7 *p7, int type, ASN1_TYPE *other)
- {
- p7->type = OBJ_nid2obj(type);
- p7->d.other = other;
- return 1;
- }
- int PKCS7_add_signer(PKCS7 *p7, PKCS7_SIGNER_INFO *psi)
- {
- int i,j,nid;
- X509_ALGOR *alg;
- STACK_OF(PKCS7_SIGNER_INFO) *signer_sk;
- STACK_OF(X509_ALGOR) *md_sk;
- i=OBJ_obj2nid(p7->type);
- switch (i)
- {
- case NID_pkcs7_signed:
- signer_sk= p7->d.sign->signer_info;
- md_sk= p7->d.sign->md_algs;
- break;
- case NID_pkcs7_signedAndEnveloped:
- signer_sk= p7->d.signed_and_enveloped->signer_info;
- md_sk= p7->d.signed_and_enveloped->md_algs;
- break;
- default:
- PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER,PKCS7_R_WRONG_CONTENT_TYPE);
- return(0);
- }
- nid=OBJ_obj2nid(psi->digest_alg->algorithm);
- /* If the digest is not currently listed, add it */
- j=0;
- for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
- {
- alg=sk_X509_ALGOR_value(md_sk,i);
- if (OBJ_obj2nid(alg->algorithm) == nid)
- {
- j=1;
- break;
- }
- }
- if (!j) /* we need to add another algorithm */
- {
- if(!(alg=X509_ALGOR_new())
- || !(alg->parameter = ASN1_TYPE_new())) {
- PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER,ERR_R_MALLOC_FAILURE);
- return(0);
- }
- alg->algorithm=OBJ_nid2obj(nid);
- alg->parameter->type = V_ASN1_NULL;
- sk_X509_ALGOR_push(md_sk,alg);
- }
- sk_PKCS7_SIGNER_INFO_push(signer_sk,psi);
- return(1);
- }
- int PKCS7_add_certificate(PKCS7 *p7, X509 *x509)
- {
- int i;
- STACK_OF(X509) **sk;
- i=OBJ_obj2nid(p7->type);
- switch (i)
- {
- case NID_pkcs7_signed:
- sk= &(p7->d.sign->cert);
- break;
- case NID_pkcs7_signedAndEnveloped:
- sk= &(p7->d.signed_and_enveloped->cert);
- break;
- default:
- PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE,PKCS7_R_WRONG_CONTENT_TYPE);
- return(0);
- }
- if (*sk == NULL)
- *sk=sk_X509_new_null();
- CRYPTO_add(&x509->references,1,CRYPTO_LOCK_X509);
- sk_X509_push(*sk,x509);
- return(1);
- }
- int PKCS7_add_crl(PKCS7 *p7, X509_CRL *crl)
- {
- int i;
- STACK_OF(X509_CRL) **sk;
- i=OBJ_obj2nid(p7->type);
- switch (i)
- {
- case NID_pkcs7_signed:
- sk= &(p7->d.sign->crl);
- break;
- case NID_pkcs7_signedAndEnveloped:
- sk= &(p7->d.signed_and_enveloped->crl);
- break;
- default:
- PKCS7err(PKCS7_F_PKCS7_ADD_CRL,PKCS7_R_WRONG_CONTENT_TYPE);
- return(0);
- }
- if (*sk == NULL)
- *sk=sk_X509_CRL_new_null();
- CRYPTO_add(&crl->references,1,CRYPTO_LOCK_X509_CRL);
- sk_X509_CRL_push(*sk,crl);
- return(1);
- }
- int PKCS7_SIGNER_INFO_set(PKCS7_SIGNER_INFO *p7i, X509 *x509, EVP_PKEY *pkey,
- const EVP_MD *dgst)
- {
- int nid;
- char is_dsa;
- if (pkey->type == EVP_PKEY_DSA || pkey->type == EVP_PKEY_EC)
- is_dsa = 1;
- else
- is_dsa = 0;
- /* We now need to add another PKCS7_SIGNER_INFO entry */
- if (!ASN1_INTEGER_set(p7i->version,1))
- goto err;
- if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
- X509_get_issuer_name(x509)))
- goto err;
- /* because ASN1_INTEGER_set is used to set a 'long' we will do
- * things the ugly way. */
- M_ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
- if (!(p7i->issuer_and_serial->serial=
- M_ASN1_INTEGER_dup(X509_get_serialNumber(x509))))
- goto err;
- /* lets keep the pkey around for a while */
- CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
- p7i->pkey=pkey;
- /* Set the algorithms */
- if (is_dsa) p7i->digest_alg->algorithm=OBJ_nid2obj(NID_sha1);
- else
- p7i->digest_alg->algorithm=OBJ_nid2obj(EVP_MD_type(dgst));
- if (p7i->digest_alg->parameter != NULL)
- ASN1_TYPE_free(p7i->digest_alg->parameter);
- if ((p7i->digest_alg->parameter=ASN1_TYPE_new()) == NULL)
- goto err;
- p7i->digest_alg->parameter->type=V_ASN1_NULL;
- if (p7i->digest_enc_alg->parameter != NULL)
- ASN1_TYPE_free(p7i->digest_enc_alg->parameter);
- nid = EVP_PKEY_type(pkey->type);
- if (nid == EVP_PKEY_RSA)
- {
- p7i->digest_enc_alg->algorithm=OBJ_nid2obj(NID_rsaEncryption);
- if (!(p7i->digest_enc_alg->parameter=ASN1_TYPE_new()))
- goto err;
- p7i->digest_enc_alg->parameter->type=V_ASN1_NULL;
- }
- else if (nid == EVP_PKEY_DSA)
- {
- #if 1
- /* use 'dsaEncryption' OID for compatibility with other software
- * (PKCS #7 v1.5 does specify how to handle DSA) ... */
- p7i->digest_enc_alg->algorithm=OBJ_nid2obj(NID_dsa);
- #else
- /* ... although the 'dsaWithSHA1' OID (as required by RFC 2630 for CMS)
- * would make more sense. */
- p7i->digest_enc_alg->algorithm=OBJ_nid2obj(NID_dsaWithSHA1);
- #endif
- p7i->digest_enc_alg->parameter = NULL; /* special case for DSA: omit 'parameter'! */
- }
- else if (nid == EVP_PKEY_EC)
- {
- p7i->digest_enc_alg->algorithm=OBJ_nid2obj(NID_ecdsa_with_SHA1);
- if (!(p7i->digest_enc_alg->parameter=ASN1_TYPE_new()))
- goto err;
- p7i->digest_enc_alg->parameter->type=V_ASN1_NULL;
- }
- else
- return(0);
- return(1);
- err:
- return(0);
- }
- PKCS7_SIGNER_INFO *PKCS7_add_signature(PKCS7 *p7, X509 *x509, EVP_PKEY *pkey,
- const EVP_MD *dgst)
- {
- PKCS7_SIGNER_INFO *si;
- if ((si=PKCS7_SIGNER_INFO_new()) == NULL) goto err;
- if (!PKCS7_SIGNER_INFO_set(si,x509,pkey,dgst)) goto err;
- if (!PKCS7_add_signer(p7,si)) goto err;
- return(si);
- err:
- return(NULL);
- }
- int PKCS7_set_digest(PKCS7 *p7, const EVP_MD *md)
- {
- if (PKCS7_type_is_digest(p7))
- {
- if(!(p7->d.digest->md->parameter = ASN1_TYPE_new()))
- {
- PKCS7err(PKCS7_F_PKCS7_SET_DIGEST,ERR_R_MALLOC_FAILURE);
- return 0;
- }
- p7->d.digest->md->parameter->type = V_ASN1_NULL;
- p7->d.digest->md->algorithm = OBJ_nid2obj(EVP_MD_nid(md));
- return 1;
- }
-
- PKCS7err(PKCS7_F_PKCS7_SET_DIGEST,PKCS7_R_WRONG_CONTENT_TYPE);
- return 1;
- }
- STACK_OF(PKCS7_SIGNER_INFO) *PKCS7_get_signer_info(PKCS7 *p7)
- {
- if (PKCS7_type_is_signed(p7))
- {
- return(p7->d.sign->signer_info);
- }
- else if (PKCS7_type_is_signedAndEnveloped(p7))
- {
- return(p7->d.signed_and_enveloped->signer_info);
- }
- else
- return(NULL);
- }
- PKCS7_RECIP_INFO *PKCS7_add_recipient(PKCS7 *p7, X509 *x509)
- {
- PKCS7_RECIP_INFO *ri;
- if ((ri=PKCS7_RECIP_INFO_new()) == NULL) goto err;
- if (!PKCS7_RECIP_INFO_set(ri,x509)) goto err;
- if (!PKCS7_add_recipient_info(p7,ri)) goto err;
- return(ri);
- err:
- return(NULL);
- }
- int PKCS7_add_recipient_info(PKCS7 *p7, PKCS7_RECIP_INFO *ri)
- {
- int i;
- STACK_OF(PKCS7_RECIP_INFO) *sk;
- i=OBJ_obj2nid(p7->type);
- switch (i)
- {
- case NID_pkcs7_signedAndEnveloped:
- sk= p7->d.signed_and_enveloped->recipientinfo;
- break;
- case NID_pkcs7_enveloped:
- sk= p7->d.enveloped->recipientinfo;
- break;
- default:
- PKCS7err(PKCS7_F_PKCS7_ADD_RECIPIENT_INFO,PKCS7_R_WRONG_CONTENT_TYPE);
- return(0);
- }
- sk_PKCS7_RECIP_INFO_push(sk,ri);
- return(1);
- }
- int PKCS7_RECIP_INFO_set(PKCS7_RECIP_INFO *p7i, X509 *x509)
- {
- if (!ASN1_INTEGER_set(p7i->version,0))
- return 0;
- if (!X509_NAME_set(&p7i->issuer_and_serial->issuer,
- X509_get_issuer_name(x509)))
- return 0;
- M_ASN1_INTEGER_free(p7i->issuer_and_serial->serial);
- if (!(p7i->issuer_and_serial->serial=
- M_ASN1_INTEGER_dup(X509_get_serialNumber(x509))))
- return 0;
- X509_ALGOR_free(p7i->key_enc_algor);
- if (!(p7i->key_enc_algor= X509_ALGOR_dup(x509->cert_info->key->algor)))
- return 0;
- CRYPTO_add(&x509->references,1,CRYPTO_LOCK_X509);
- p7i->cert=x509;
- return(1);
- }
- X509 *PKCS7_cert_from_signer_info(PKCS7 *p7, PKCS7_SIGNER_INFO *si)
- {
- if (PKCS7_type_is_signed(p7))
- return(X509_find_by_issuer_and_serial(p7->d.sign->cert,
- si->issuer_and_serial->issuer,
- si->issuer_and_serial->serial));
- else
- return(NULL);
- }
- int PKCS7_set_cipher(PKCS7 *p7, const EVP_CIPHER *cipher)
- {
- int i;
- ASN1_OBJECT *objtmp;
- PKCS7_ENC_CONTENT *ec;
- i=OBJ_obj2nid(p7->type);
- switch (i)
- {
- case NID_pkcs7_signedAndEnveloped:
- ec=p7->d.signed_and_enveloped->enc_data;
- break;
- case NID_pkcs7_enveloped:
- ec=p7->d.enveloped->enc_data;
- break;
- default:
- PKCS7err(PKCS7_F_PKCS7_SET_CIPHER,PKCS7_R_WRONG_CONTENT_TYPE);
- return(0);
- }
- /* Check cipher OID exists and has data in it*/
- i = EVP_CIPHER_type(cipher);
- if(i == NID_undef) {
- PKCS7err(PKCS7_F_PKCS7_SET_CIPHER,PKCS7_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
- return(0);
- }
- objtmp = OBJ_nid2obj(i);
- ec->cipher = cipher;
- return 1;
- }