#include <stdio.h>
#include "cryptlib.h"
-#include "rand.h"
-#include "objects.h"
-#include "x509.h"
+#include <openssl/rand.h>
+#include <openssl/objects.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+#include <openssl/err.h>
-BIO *PKCS7_dataInit(p7,bio)
-PKCS7 *p7;
-BIO *bio;
+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 i,j;
- BIO *out=NULL,*btmp;
- X509_ALGOR *xa;
- EVP_MD *evp_md;
- EVP_CIPHER *evp_cipher=NULL;
- STACK *md_sk=NULL,*rsk=NULL;
+ 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;
- EVP_PKEY *pkey;
+ ASN1_OCTET_STRING *os=NULL;
i=OBJ_obj2nid(p7->type);
p7->state=PKCS7_S_HEADER;
{
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;
- evp_cipher=EVP_get_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(p7->d.signed_and_enveloped->enc_data->algorithm->algorithm)));
+ 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_UNSUPPORTED_CIPHER_TYPE);
+ PKCS7err(PKCS7_F_PKCS7_DATAINIT,
+ PKCS7_R_CIPHER_NOT_INITIALIZED);
goto err;
}
- xalg=p7->d.signed_and_enveloped->enc_data->algorithm;
+ 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);
+ 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_num(md_sk); i++)
+ for (i=0; i<sk_X509_ALGOR_num(md_sk); i++)
{
- xa=(X509_ALGOR *)sk_value(md_sk,i);
- if ((btmp=BIO_new(BIO_f_md())) == NULL) goto err;
+ 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_digestbyname(OBJ_nid2sn(j));
+ evp_md=EVP_get_digestbynid(j);
if (evp_md == NULL)
{
- PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNKNOWN_DIGEST_TYPE);
+ PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNKNOWN_DIGEST_TYPE);
goto err;
}
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 jj,max;
- unsigned char *tmp;
+ int max;
+ X509_OBJECT ret;
+#endif
- if ((btmp=BIO_new(BIO_f_cipher())) == NULL) goto err;
- keylen=EVP_CIPHER_key_length(evp_cipher);
- ivlen=EVP_CIPHER_iv_length(evp_cipher);
-
- if (ivlen > 0)
+ if ((etmp=BIO_new(BIO_f_cipher())) == NULL)
{
- ASN1_OCTET_STRING *os;
+ PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_BIO_LIB);
+ goto err;
+ }
- RAND_bytes(iv,ivlen);
- os=ASN1_OCTET_STRING_new();
- ASN1_OCTET_STRING_set(os,iv,ivlen);
- /* ASN1_TYPE_set(xalg->parameter,V_ASN1_OCTET_STRING,
- (char *)os);
- */ }
- RAND_bytes(key,keylen);
+ /* It was encrypted, we need to decrypt the secret key
+ * with the private key */
- /* Lets do the pub key stuff :-) */
- max=0;
- for (i=0; i<sk_num(rsk); i++)
+ /* 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)
{
- ri=(PKCS7_RECIP_INFO *)sk_value(rsk,i);
- if (ri->cert == NULL) abort();
- pkey=X509_get_pubkey(ri->cert);
- jj=EVP_PKEY_size(pkey);
- if (max < jj) max=jj;
+ /* Always attempt to decrypt all rinfo even
+ * after success 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();
+ }
}
- if ((tmp=(unsigned char *)Malloc(max)) == NULL) abort();
- for (i=0; i<sk_num(rsk); i++)
+ else
{
- ri=(PKCS7_RECIP_INFO *)sk_value(rsk,i);
- pkey=X509_get_pubkey(ri->cert);
- jj=EVP_PKEY_encrypt(tmp,key,keylen,pkey);
- if (jj <= 0) abort();
- ASN1_OCTET_STRING_set(ri->enc_key,tmp,jj);
+ /* Only exit on fatal errors, not decrypt failure */
+ if (pkcs7_decrypt_rinfo(&ek, &eklen, ri, pkey) < 0)
+ goto err;
+ ERR_clear_error();
}
- BIO_set_cipher(btmp,evp_cipher,key,iv,1);
+ 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=btmp;
+ out=etmp;
else
- BIO_push(out,btmp);
+ BIO_push(out,etmp);
+ etmp=NULL;
}
- if (bio == NULL) /* ??????????? */
+#if 1
+ if (PKCS7_is_detached(p7) || (in_bio != NULL))
{
- if (p7->detached)
- bio=BIO_new(BIO_s_null());
- else
- {
- bio=BIO_new(BIO_s_mem());
- if (PKCS7_type_is_signed(p7) &&
- PKCS7_type_is_data(p7->d.sign->contents))
- {
- ASN1_OCTET_STRING *os;
+ 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);
- os=p7->d.sign->contents->d.data;
- if (os->length > 0)
- BIO_write(bio,(char *)os->data,
- os->length);
- }
- }
+ 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);
- return(out);
+ bio=NULL;
+#endif
+ if (0)
+ {
err:
- return(NULL);
+ 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);
}
-int PKCS7_dataSign(p7,bio)
-PKCS7 *p7;
-BIO *bio;
+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;
- BUF_MEM *buf_mem=NULL;
- BUF_MEM *buf=NULL;
PKCS7_SIGNER_INFO *si;
EVP_MD_CTX *mdc,ctx_tmp;
- STACK *sk,*si_sk=NULL;
- unsigned char *p,*pp=NULL;
- int x;
+ 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=ASN1_OCTET_STRING_new();
- p7->d.signed_and_enveloped->enc_data->enc_data=os;
+ 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=p7->d.sign->contents->d.data;
+ 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)
{
- if ((buf=BUF_MEM_new()) == NULL) goto err;
- for (i=0; i<sk_num(si_sk); i++)
+ for (i=0; i<sk_PKCS7_SIGNER_INFO_num(si_sk); i++)
{
- si=(PKCS7_SIGNER_INFO *)
- sk_value(si_sk,i);
+ si=sk_PKCS7_SIGNER_INFO_value(si_sk,i);
if (si->pkey == NULL)
continue;
- j=OBJ_obj2nid(si->digest_enc_alg->algorithm);
+
+ j = OBJ_obj2nid(si->digest_alg->algorithm);
btmp=bio;
- for (;;)
- {
- if ((btmp=BIO_find_type(btmp,BIO_TYPE_MD))
- == NULL)
- {
- PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
- goto err;
- }
- BIO_get_md_ctx(btmp,&mdc);
- if (mdc == NULL)
- {
- PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_INTERNAL_ERROR);
- goto err;
- }
- if (EVP_MD_pkey_type(EVP_MD_CTX_type(mdc)) == j)
- break;
- else
- btmp=btmp->next_bio;
- }
-
+
+ btmp = PKCS7_find_digest(&mdc, btmp, j);
+
+ if (btmp == NULL)
+ goto err;
+
/* We now have the EVP_MD_CTX, lets do the
* signing. */
- memcpy(&ctx_tmp,mdc,sizeof(ctx_tmp));
- if (!BUF_MEM_grow(buf,EVP_PKEY_size(si->pkey)))
+ if (!EVP_MD_CTX_copy_ex(&ctx_tmp,mdc))
goto err;
sk=si->auth_attr;
- if ((sk != NULL) && (sk_num(sk) != 0))
+
+ /* If there are attributes, we add the digest
+ * attribute and only sign the attributes */
+ if (sk_X509_ATTRIBUTE_num(sk) > 0)
{
- x=i2d_ASN1_SET(sk,NULL,i2d_X509_ATTRIBUTE,
- V_ASN1_SET,V_ASN1_UNIVERSAL);
- pp=(unsigned char *)Malloc(i);
- p=pp;
- i2d_ASN1_SET(sk,&p,i2d_X509_ATTRIBUTE,
- V_ASN1_SET,V_ASN1_UNIVERSAL);
- EVP_SignUpdate(&ctx_tmp,pp,x);
- Free(pp);
+ if (!do_pkcs7_signed_attrib(si, &ctx_tmp))
+ goto err;
}
-
- if (!EVP_SignFinal(&ctx_tmp,(unsigned char *)buf->data,
- (unsigned int *)&buf->length,si->pkey))
- goto err;
- if (!ASN1_STRING_set(si->enc_digest,
- (unsigned char *)buf->data,buf->length))
- goto err;
- }
- if (p7->detached)
- ASN1_OCTET_STRING_set(os,(unsigned char *)"",0);
- else
- {
- btmp=BIO_find_type(bio,BIO_TYPE_MEM);
- if (btmp == NULL)
+ else
{
- PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_UNABLE_TO_FIND_MEM_BIO);
- goto err;
+ 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);
}
- BIO_get_mem_ptr(btmp,&buf_mem);
- ASN1_OCTET_STRING_set(os,
- (unsigned char *)buf_mem->data,buf_mem->length);
}
- if (pp != NULL) Free(pp);
- pp=NULL;
+ }
+ 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:
- if (buf != NULL) BUF_MEM_free(buf);
+ EVP_MD_CTX_cleanup(&ctx_tmp);
return(ret);
}
-int PKCS7_dataVerify(cert_store,ctx,bio,p7,si)
-X509_STORE *cert_store;
-X509_STORE_CTX *ctx;
-BIO *bio;
-PKCS7 *p7;
-PKCS7_SIGNER_INFO *si;
+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_SIGNED *s;
- ASN1_OCTET_STRING *os;
- EVP_MD_CTX mdc_tmp,*mdc;
- unsigned char *pp,*p;
PKCS7_ISSUER_AND_SERIAL *ias;
- int ret=0,md_type,i;
- STACK *sk;
- BIO *btmp;
+ int ret=0,i;
+ STACK_OF(X509) *cert;
X509 *x509;
- if (!PKCS7_type_is_signed(p7)) abort();
+ 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;
- s=p7->d.sign;
- x509=X509_find_by_issuer_and_serial(s->cert,ias->issuer,ias->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)
}
/* Lets verify */
- X509_STORE_CTX_init(ctx,cert_store,x509,s->cert);
+ 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) goto err;
+ if (i <= 0)
+ {
+ PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,ERR_R_X509_LIB);
+ X509_STORE_CTX_cleanup(ctx);
+ goto err;
+ }
X509_STORE_CTX_cleanup(ctx);
- /* So we like 'x509', lets check the signature. */
+ 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;
if ((btmp == NULL) ||
((btmp=BIO_find_type(btmp,BIO_TYPE_MD)) == NULL))
{
- PKCS7err(PKCS7_F_PKCS7_DATAVERIFY,PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
+ 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_DATAVERIFY,PKCS7_R_INTERNAL_ERROR);
+ PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
+ ERR_R_INTERNAL_ERROR);
goto err;
}
- if (EVP_MD_type(EVP_MD_CTX_type(mdc)) == md_type)
+ if (EVP_MD_CTX_type(mdc) == md_type)
break;
- btmp=btmp->next_bio;
+ /* 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 */
- memcpy(&mdc_tmp,mdc,sizeof(mdc_tmp));
+ /* 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_num(sk) != 0))
+ if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0))
{
- i=i2d_ASN1_SET(sk,NULL,i2d_X509_ATTRIBUTE,
- V_ASN1_SET,V_ASN1_UNIVERSAL);
- pp=(unsigned char *)malloc(i);
- p=pp;
- i2d_ASN1_SET(sk,&p,i2d_X509_ATTRIBUTE,
- V_ASN1_SET,V_ASN1_UNIVERSAL);
- EVP_VerifyUpdate(&mdc_tmp,pp,i);
- free(pp);
+ 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;
- i=EVP_VerifyFinal(&mdc_tmp,os->data,os->length,
- X509_get_pubkey(x509));
+ 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_DATAVERIFY,PKCS7_R_SIGNATURE_FAILURE);
+ 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);
+ }
+
projects / openssl.git / blobdiff