#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 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;
+ int 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;
+
+ }
+
+
+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;
+ int 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;
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);
unsigned char key[EVP_MAX_KEY_LENGTH];
unsigned char iv[EVP_MAX_IV_LENGTH];
int keylen,ivlen;
- int jj,max;
- unsigned char *tmp;
EVP_CIPHER_CTX *ctx;
if ((btmp=BIO_new(BIO_f_cipher())) == NULL)
}
/* Lets do the pub key stuff :-) */
- max=0;
- for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
- {
- ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
- if (ri->cert == NULL)
- {
- PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_MISSING_CERIPEND_INFO);
- goto err;
- }
- pkey=X509_get_pubkey(ri->cert);
- jj=EVP_PKEY_size(pkey);
- EVP_PKEY_free(pkey);
- if (max < jj) max=jj;
- }
- if ((tmp=(unsigned char *)OPENSSL_malloc(max)) == NULL)
- {
- PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_MALLOC_FAILURE);
- goto err;
- }
for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++)
{
ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
- pkey=X509_get_pubkey(ri->cert);
- jj=EVP_PKEY_encrypt(tmp,key,keylen,pkey);
- EVP_PKEY_free(pkey);
- if (jj <= 0)
- {
- PKCS7err(PKCS7_F_PKCS7_DATAINIT,ERR_R_EVP_LIB);
- OPENSSL_free(tmp);
+ if (pkcs7_encode_rinfo(ri, key, keylen) <= 0)
goto err;
- }
- M_ASN1_OCTET_STRING_set(ri->enc_key,tmp,jj);
}
- OPENSSL_free(tmp);
OPENSSL_cleanse(key, keylen);
if (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;
- unsigned char *tmp=NULL;
X509_ALGOR *xa;
ASN1_OCTET_STRING *data_body=NULL;
const EVP_MD *evp_md;
int max;
X509_OBJECT ret;
#endif
- int jj;
+ unsigned char *ek = NULL;
+ int eklen;
if ((etmp=BIO_new(BIO_f_cipher())) == NULL)
{
* (if any)
*/
- for (i=0; i<sk_PKCS7_RECIP_INFO_num(rsk); i++) {
- ri=sk_PKCS7_RECIP_INFO_value(rsk,i);
- if(!X509_NAME_cmp(ri->issuer_and_serial->issuer,
- pcert->cert_info->issuer) &&
- !M_ASN1_INTEGER_cmp(pcert->cert_info->serialNumber,
- ri->issuer_and_serial->serial)) break;
- ri=NULL;
- }
- if (ri == NULL) {
- PKCS7err(PKCS7_F_PKCS7_DATADECODE,
- PKCS7_R_NO_RECIPIENT_MATCHES_CERTIFICATE);
- goto err;
- }
-
- jj=EVP_PKEY_size(pkey);
- tmp=(unsigned char *)OPENSSL_malloc(jj+10);
- if (tmp == NULL)
+ if (pcert)
{
- PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_MALLOC_FAILURE);
- goto err;
+ 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;
+ }
}
- jj=EVP_PKEY_decrypt(tmp, M_ASN1_STRING_data(ri->enc_key),
- M_ASN1_STRING_length(ri->enc_key), pkey);
- if (jj <= 0)
+ /* If we haven't got a certificate try each ri in turn */
+
+ if (pcert == NULL)
{
- PKCS7err(PKCS7_F_PKCS7_DATADECODE,ERR_R_EVP_LIB);
- goto err;
+ 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;
if (EVP_CIPHER_asn1_to_param(evp_ctx,enc_alg->parameter) < 0)
goto err;
- if (jj != EVP_CIPHER_CTX_key_length(evp_ctx)) {
+ 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, jj))
+ 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,tmp,NULL,0) <= 0)
+ if (EVP_CipherInit_ex(evp_ctx,NULL,NULL,ek,NULL,0) <= 0)
goto err;
- OPENSSL_cleanse(tmp,jj);
+ if (ek)
+ {
+ OPENSSL_cleanse(ek,eklen);
+ OPENSSL_free(ek);
+ }
if (out == NULL)
out=etmp;
if (bio != NULL) BIO_free_all(bio);
out=NULL;
}
- if (tmp != NULL)
- OPENSSL_free(tmp);
return(out);
}
bio=BIO_find_type(bio,BIO_TYPE_MD);
if (bio == NULL)
{
- PKCS7err(PKCS7_F_FIND_DIGEST,PKCS7_R_UNABLE_TO_FIND_MESSAGE_DIGEST);
+ 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_DATASIGN,ERR_R_INTERNAL_ERROR);
+ PKCS7err(PKCS7_F_PKCS7_FIND_DIGEST,ERR_R_INTERNAL_ERROR);
return NULL;
}
if (EVP_MD_CTX_type(*pmd) == nid)
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;
- BUF_MEM *buf_mem=NULL;
- BUF_MEM *buf=NULL;
PKCS7_SIGNER_INFO *si;
EVP_MD_CTX *mdc,ctx_tmp;
STACK_OF(X509_ATTRIBUTE) *sk;
case NID_pkcs7_signedAndEnveloped:
/* XXXXXXXXXXXXXXXX */
si_sk=p7->d.signed_and_enveloped->signer_info;
- os=M_ASN1_OCTET_STRING_new();
+ if (!(os=M_ASN1_OCTET_STRING_new()))
+ {
+ 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=M_ASN1_OCTET_STRING_new();
+ if (!(os=M_ASN1_OCTET_STRING_new()))
+ {
+ PKCS7err(PKCS7_F_PKCS7_DATAFINAL,ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
p7->d.enveloped->enc_data->enc_data=os;
break;
case NID_pkcs7_signed:
if (si_sk != NULL)
{
- if ((buf=BUF_MEM_new()) == NULL)
- {
- PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_BIO_LIB);
- goto err;
- }
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;
+ if (si->pkey == NULL)
+ continue;
- j=OBJ_obj2nid(si->digest_alg->algorithm);
+ j = OBJ_obj2nid(si->digest_alg->algorithm);
btmp=bio;
/* We now have the EVP_MD_CTX, lets do the
* signing. */
EVP_MD_CTX_copy_ex(&ctx_tmp,mdc);
- if (!BUF_MEM_grow_clean(buf,EVP_PKEY_size(si->pkey)))
- {
- PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_BIO_LIB);
- goto err;
- }
sk=si->auth_attr;
/* If there are attributes, we add the digest
* attribute and only sign the attributes */
- if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0))
+ if (sk_X509_ATTRIBUTE_num(sk) > 0)
{
- unsigned char md_data[EVP_MAX_MD_SIZE], *abuf=NULL;
- unsigned int md_len, alen;
- ASN1_OCTET_STRING *digest;
- ASN1_UTCTIME *sign_time;
- const EVP_MD *md_tmp;
-
- /* Add signing time if not already present */
- if (!PKCS7_get_signed_attribute(si,
- NID_pkcs9_signingTime))
- {
- sign_time=X509_gmtime_adj(NULL,0);
- PKCS7_add_signed_attribute(si,
- NID_pkcs9_signingTime,
- V_ASN1_UTCTIME,sign_time);
- }
-
- /* Add digest */
- md_tmp=EVP_MD_CTX_md(&ctx_tmp);
- EVP_DigestFinal_ex(&ctx_tmp,md_data,&md_len);
- digest=M_ASN1_OCTET_STRING_new();
- M_ASN1_OCTET_STRING_set(digest,md_data,md_len);
- PKCS7_add_signed_attribute(si,
- NID_pkcs9_messageDigest,
- V_ASN1_OCTET_STRING,digest);
-
- /* Now sign the attributes */
- EVP_SignInit_ex(&ctx_tmp,md_tmp,NULL);
- alen = ASN1_item_i2d((ASN1_VALUE *)sk,&abuf,
- ASN1_ITEM_rptr(PKCS7_ATTR_SIGN));
- if(!abuf) goto err;
- EVP_SignUpdate(&ctx_tmp,abuf,alen);
- OPENSSL_free(abuf);
+ if (!do_pkcs7_signed_attrib(si, &ctx_tmp))
+ goto err;
}
-
-#ifndef OPENSSL_NO_DSA
- if (si->pkey->type == EVP_PKEY_DSA)
- ctx_tmp.digest=EVP_dss1();
-#endif
-#ifndef OPENSSL_NO_ECDSA
- if (si->pkey->type == EVP_PKEY_EC)
- ctx_tmp.digest=EVP_ecdsa();
-#endif
-
- if (!EVP_SignFinal(&ctx_tmp,(unsigned char *)buf->data,
- (unsigned int *)&buf->length,si->pkey))
- {
- PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_EVP_LIB);
- goto err;
- }
- if (!ASN1_STRING_set(si->enc_digest,
- (unsigned char *)buf->data,buf->length))
+ else
{
- PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_ASN1_LIB);
- 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);
}
}
}
if (!PKCS7_is_detached(p7))
{
+ char *cont;
+ long contlen;
btmp=BIO_find_type(bio,BIO_TYPE_MEM);
if (btmp == NULL)
{
- PKCS7err(PKCS7_F_PKCS7_DATASIGN,PKCS7_R_UNABLE_TO_FIND_MEM_BIO);
+ PKCS7err(PKCS7_F_PKCS7_DATAFINAL,PKCS7_R_UNABLE_TO_FIND_MEM_BIO);
goto err;
}
- BIO_get_mem_ptr(btmp,&buf_mem);
+ 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);
- os->data = (unsigned char *)buf_mem->data;
- os->length = buf_mem->length;
-#if 0
- M_ASN1_OCTET_STRING_set(os,
- (unsigned char *)buf_mem->data,buf_mem->length);
-#endif
+ ASN1_STRING_set0(os, (unsigned char *)cont, contlen);
}
ret=1;
err:
EVP_MD_CTX_cleanup(&ctx_tmp);
- if (buf != NULL) BUF_MEM_free(buf);
return(ret);
}
+int PKCS7_SIGNER_INFO_sign(PKCS7_SIGNER_INFO *si)
+ {
+ EVP_MD_CTX mctx;
+ unsigned char *abuf = NULL;
+ int alen;
+ unsigned int 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_SignInit_ex(&mctx,md,NULL))
+ goto err;
+ alen = ASN1_item_i2d((ASN1_VALUE *)si->auth_attr,&abuf,
+ ASN1_ITEM_rptr(PKCS7_ATTR_SIGN));
+ if(!abuf)
+ goto err;
+ if (!EVP_SignUpdate(&mctx,abuf,alen))
+ goto err;
+ OPENSSL_free(abuf);
+ abuf = OPENSSL_malloc(EVP_PKEY_size(si->pkey));
+ if(!abuf)
+ goto err;
+ if (!EVP_SignFinal(&mctx, abuf, &siglen, si->pkey))
+ goto err;
+
+ EVP_MD_CTX_cleanup(&mctx);
+
+ ASN1_STRING_set0(si->enc_digest, abuf, siglen);
+ abuf = NULL;
+
+ 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)
{
ret = -1;
goto err;
}
-#ifndef OPENSSL_NO_DSA
- if(pkey->type == EVP_PKEY_DSA) mdc_tmp.digest=EVP_dss1();
-#endif
-#ifndef OPENSSL_NO_ECDSA
- if (pkey->type == EVP_PKEY_EC) mdc_tmp.digest=EVP_ecdsa();
-#endif
i=EVP_VerifyFinal(&mdc_tmp,os->data,os->length, pkey);
EVP_PKEY_free(pkey);
projects / openssl.git / blobdiff