/* 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 #include "cryptlib.h" #include #include 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: 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: default: PKCS7err(PKCS7_F_PKCS7_SET_TYPE,PKCS7_R_UNSUPPORTED_CONTENT_TYPE); goto err; } return(1); err: return(0); } 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; ialgorithm) == 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) { char is_dsa; if (pkey->type == EVP_PKEY_DSA) 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; p7i->digest_enc_alg->algorithm=OBJ_nid2obj(EVP_PKEY_type(pkey->type)); if (p7i->digest_enc_alg->parameter != NULL) ASN1_TYPE_free(p7i->digest_enc_alg->parameter); if(is_dsa) p7i->digest_enc_alg->parameter = NULL; else { if (!(p7i->digest_enc_alg->parameter=ASN1_TYPE_new())) goto err; p7i->digest_enc_alg->parameter->type=V_ASN1_NULL; } 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); } 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; }