Update PKCS#7 enveloped data to new API.
[openssl.git] / crypto / pkcs7 / pk7_doit.c
index de96148b6eba1a748919ccd66f8adb71a1e42fc6..026dd540d65f4dcf405b0faf79785f35b971c044 100644 (file)
 #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;
+       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;
+
+       }
+
+
+
 BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio)
        {
-       int i,j;
+       int i;
        BIO *out=NULL,*btmp=NULL;
-       X509_ALGOR *xa;
-       const EVP_MD *evp_md;
+       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;
@@ -87,6 +217,7 @@ BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio)
                {
        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;
@@ -111,46 +242,27 @@ BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio)
                        goto err;
                        }
                break;
+       case NID_pkcs7_digest:
+               xa = p7->d.digest->md;
+               os = PKCS7_get_octet_string(p7->d.digest->contents);
+               break;
        default:
                PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNSUPPORTED_CONTENT_TYPE);
                goto err;
                }
 
-       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_DATAINIT,ERR_R_BIO_LIB);
-                               goto err;
-                               }
-
-                       j=OBJ_obj2nid(xa->algorithm);
-                       evp_md=EVP_get_digestbyname(OBJ_nid2sn(j));
-                       if (evp_md == NULL)
-                               {
-                               PKCS7err(PKCS7_F_PKCS7_DATAINIT,PKCS7_R_UNKNOWN_DIGEST_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;
 
-                       BIO_set_md(btmp,evp_md);
-                       if (out == NULL)
-                               out=btmp;
-                       else
-                               BIO_push(out,btmp);
-                       btmp=NULL;
-                       }
-               }
+       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;
-               int jj,max;
-               unsigned char *tmp;
                EVP_CIPHER_CTX *ctx;
 
                if ((btmp=BIO_new(BIO_f_cipher())) == NULL)
@@ -161,11 +273,14 @@ BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio)
                BIO_get_cipher_ctx(btmp, &ctx);
                keylen=EVP_CIPHER_key_length(evp_cipher);
                ivlen=EVP_CIPHER_iv_length(evp_cipher);
-               if (RAND_bytes(key,keylen) <= 0)
-                       goto err;
                xalg->algorithm = OBJ_nid2obj(EVP_CIPHER_type(evp_cipher));
                if (ivlen > 0) RAND_pseudo_bytes(iv,ivlen);
-               EVP_CipherInit(ctx, evp_cipher, key, iv, 1);
+               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) 
@@ -175,41 +290,13 @@ BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio)
                }
 
                /* 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);
+                       if (pkcs7_encode_rinfo(ri, key, keylen) <= 0)
                                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);
-                               goto err;
-                               }
-                       M_ASN1_OCTET_STRING_set(ri->enc_key,tmp,jj);
-                       }
-               OPENSSL_free(tmp);
-               memset(key, 0, keylen);
+               OPENSSL_cleanse(key, keylen);
 
                if (out == NULL)
                        out=btmp;
@@ -218,23 +305,18 @@ BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio)
                btmp=NULL;
                }
 
-       if (bio == NULL) {
+       if (bio == NULL)
+               {
                if (PKCS7_is_detached(p7))
                        bio=BIO_new(BIO_s_null());
-               else {
-                       if (PKCS7_type_is_signed(p7) &&
-                               PKCS7_type_is_data(p7->d.sign->contents)) {
-                               ASN1_OCTET_STRING *os;
-                               os=p7->d.sign->contents->d.data;
-                               if (os->length > 0) bio = 
-                                       BIO_new_mem_buf(os->data, os->length);
-                       } 
-                       if(bio == NULL) {
-                               bio=BIO_new(BIO_s_mem());
-                               BIO_set_mem_eof_return(bio,0);
+               else if (os && os->length > 0)
+                       bio = BIO_new_mem_buf(os->data, os->length);
+               if(bio == NULL)
+                       {
+                       bio=BIO_new(BIO_s_mem());
+                       BIO_set_mem_eof_return(bio,0);
                        }
                }
-       }
        BIO_push(out,bio);
        bio=NULL;
        if (0)
@@ -249,6 +331,17 @@ err:
        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)
        {
@@ -272,7 +365,7 @@ BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
        switch (i)
                {
        case NID_pkcs7_signed:
-               data_body=p7->d.sign->contents->d.data;
+               data_body=PKCS7_get_octet_string(p7->d.sign->contents);
                md_sk=p7->d.sign->md_algs;
                break;
        case NID_pkcs7_signedAndEnveloped:
@@ -280,7 +373,7 @@ BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
                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_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(enc_alg->algorithm)));
+               evp_cipher=EVP_get_cipherbyobj(enc_alg->algorithm);
                if (evp_cipher == NULL)
                        {
                        PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
@@ -292,7 +385,7 @@ BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
                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_cipherbyname(OBJ_nid2sn(OBJ_obj2nid(enc_alg->algorithm)));
+               evp_cipher=EVP_get_cipherbyobj(enc_alg->algorithm);
                if (evp_cipher == NULL)
                        {
                        PKCS7err(PKCS7_F_PKCS7_DATADECODE,PKCS7_R_UNSUPPORTED_CIPHER_TYPE);
@@ -318,7 +411,7 @@ BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
                                }
 
                        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_DATADECODE,PKCS7_R_UNKNOWN_DIGEST_TYPE);
@@ -359,18 +452,18 @@ BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
                 * (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);
-                       return(NULL);
+               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;
+                       }
                }
 
                jj=EVP_PKEY_size(pkey);
@@ -381,19 +474,48 @@ BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
                        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);
+                               jj=EVP_PKEY_decrypt_old(tmp,
+                                       M_ASN1_STRING_data(ri->enc_key),
+                                       M_ASN1_STRING_length(ri->enc_key),
+                                               pkey);
+                               if (jj > 0)
+                                       break;
+                               ERR_clear_error();
+                               ri = NULL;
+                               }
+                       if (ri == NULL)
+                               {
+                               PKCS7err(PKCS7_F_PKCS7_DATADECODE,
+                                     PKCS7_R_NO_RECIPIENT_MATCHES_KEY);
+                               goto err;
+                               }
+                       }
+               else
+                       {
+                       jj=EVP_PKEY_decrypt_old(tmp,
+                               M_ASN1_STRING_data(ri->enc_key),
+                               M_ASN1_STRING_length(ri->enc_key), pkey);
+                       if (jj <= 0)
+                               {
+                               PKCS7err(PKCS7_F_PKCS7_DATADECODE,
+                                                               ERR_R_EVP_LIB);
+                               goto err;
+                               }
                        }
 
                evp_ctx=NULL;
                BIO_get_cipher_ctx(etmp,&evp_ctx);
-               EVP_CipherInit(evp_ctx,evp_cipher,NULL,NULL,0);
+               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)
-                       return(NULL);
+                       goto err;
 
                if (jj != EVP_CIPHER_CTX_key_length(evp_ctx)) {
                        /* Some S/MIME clients don't use the same key
@@ -407,9 +529,10 @@ BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
                                goto err;
                                }
                } 
-               EVP_CipherInit(evp_ctx,NULL,tmp,NULL,0);
+               if (EVP_CipherInit_ex(evp_ctx,NULL,NULL,tmp,NULL,0) <= 0)
+                       goto err;
 
-               memset(tmp,0,jj);
+               OPENSSL_cleanse(tmp,jj);
 
                if (out == NULL)
                        out=etmp;
@@ -460,6 +583,29 @@ err:
        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;
+       }
+
 int PKCS7_dataFinal(PKCS7 *p7, BIO *bio)
        {
        int ret=0;
@@ -473,6 +619,7 @@ int PKCS7_dataFinal(PKCS7 *p7, BIO *bio)
        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;
 
@@ -481,30 +628,49 @@ int PKCS7_dataFinal(PKCS7 *p7, BIO *bio)
        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:
                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(p7->detached) {
+               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;
+
                }
 
        if (si_sk != NULL)
                {
                if ((buf=BUF_MEM_new()) == NULL)
                        {
-                       PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_BIO_LIB);
+                       PKCS7err(PKCS7_F_PKCS7_DATAFINAL,ERR_R_BIO_LIB);
                        goto err;
                        }
                for (i=0; i<sk_PKCS7_SIGNER_INFO_num(si_sk); i++)
@@ -515,32 +681,18 @@ int PKCS7_dataFinal(PKCS7 *p7, BIO *bio)
                        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_CTX_type(mdc) == j)
-                                       break;
-                               else
-                                       btmp=BIO_next(btmp);
-                               }
-                       
+
+                       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)))
+                       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);
+                               PKCS7err(PKCS7_F_PKCS7_DATAFINAL,ERR_R_BIO_LIB);
                                goto err;
                                }
 
@@ -556,23 +708,43 @@ int PKCS7_dataFinal(PKCS7 *p7, BIO *bio)
                                ASN1_UTCTIME *sign_time;
                                const EVP_MD *md_tmp;
 
-                               /* Add signing time */
-                               sign_time=X509_gmtime_adj(NULL,0);
-                               PKCS7_add_signed_attribute(si,
-                                       NID_pkcs9_signingTime,
-                                       V_ASN1_UTCTIME,sign_time);
+                               /* Add signing time if not already present */
+                               if (!PKCS7_get_signed_attribute(si,
+                                                       NID_pkcs9_signingTime))
+                                       {
+                                       if (!(sign_time=X509_gmtime_adj(NULL,0)))
+                                               {
+                                               PKCS7err(PKCS7_F_PKCS7_DATAFINAL,
+                                                       ERR_R_MALLOC_FAILURE);
+                                               goto err;
+                                               }
+                                       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(&ctx_tmp,md_data,&md_len);
-                               digest=M_ASN1_OCTET_STRING_new();
-                               M_ASN1_OCTET_STRING_set(digest,md_data,md_len);
+                               EVP_DigestFinal_ex(&ctx_tmp,md_data,&md_len);
+                               if (!(digest=M_ASN1_OCTET_STRING_new()))
+                                       {
+                                       PKCS7err(PKCS7_F_PKCS7_DATAFINAL,
+                                               ERR_R_MALLOC_FAILURE);
+                                       goto err;
+                                       }
+                               if (!M_ASN1_OCTET_STRING_set(digest,md_data,
+                                                               md_len))
+                                       {
+                                       PKCS7err(PKCS7_F_PKCS7_DATAFINAL,
+                                               ERR_R_MALLOC_FAILURE);
+                                       goto err;
+                                       }
                                PKCS7_add_signed_attribute(si,
                                        NID_pkcs9_messageDigest,
                                        V_ASN1_OCTET_STRING,digest);
 
                                /* Now sign the attributes */
-                               EVP_SignInit(&ctx_tmp,md_tmp);
+                               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;
@@ -580,30 +752,46 @@ int PKCS7_dataFinal(PKCS7 *p7, BIO *bio)
                                OPENSSL_free(abuf);
                                }
 
+#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);
+                               PKCS7err(PKCS7_F_PKCS7_DATAFINAL,ERR_R_EVP_LIB);
                                goto err;
                                }
                        if (!ASN1_STRING_set(si->enc_digest,
                                (unsigned char *)buf->data,buf->length))
                                {
-                               PKCS7err(PKCS7_F_PKCS7_DATASIGN,ERR_R_ASN1_LIB);
+                               PKCS7err(PKCS7_F_PKCS7_DATAFINAL,ERR_R_ASN1_LIB);
                                goto err;
                                }
                        }
                }
+       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;
+               EVP_DigestFinal_ex(mdc,md_data,&md_len);
+               M_ASN1_OCTET_STRING_set(p7->d.digest->digest, md_data, md_len);
+               }
 
        if (!PKCS7_is_detached(p7))
                {
                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);
@@ -621,6 +809,7 @@ int PKCS7_dataFinal(PKCS7 *p7, BIO *bio)
                }
        ret=1;
 err:
+       EVP_MD_CTX_cleanup(&ctx_tmp);
        if (buf != NULL) BUF_MEM_free(buf);
        return(ret);
        }
@@ -659,7 +848,11 @@ int PKCS7_dataVerify(X509_STORE *cert_store, X509_STORE_CTX *ctx, BIO *bio,
                }
 
        /* Lets verify */
-       X509_STORE_CTX_init(ctx,cert_store,x509,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) 
@@ -686,6 +879,8 @@ int PKCS7_signatureVerify(BIO *bio, PKCS7 *p7, PKCS7_SIGNER_INFO *si,
        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,
@@ -709,17 +904,22 @@ int PKCS7_signatureVerify(BIO *bio, PKCS7 *p7, PKCS7_SIGNER_INFO *si,
                if (mdc == NULL)
                        {
                        PKCS7err(PKCS7_F_PKCS7_SIGNATUREVERIFY,
-                                                       PKCS7_R_INTERNAL_ERROR);
+                                                       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 */
-       memcpy(&mdc_tmp,mdc,sizeof(mdc_tmp));
+       EVP_MD_CTX_copy_ex(&mdc_tmp,mdc);
 
        sk=si->auth_attr;
        if ((sk != NULL) && (sk_X509_ATTRIBUTE_num(sk) != 0))
@@ -728,7 +928,7 @@ int PKCS7_signatureVerify(BIO *bio, PKCS7 *p7, PKCS7_SIGNER_INFO *si,
                 unsigned int md_len, alen;
                ASN1_OCTET_STRING *message_digest;
 
-               EVP_DigestFinal(&mdc_tmp,md_dat,&md_len);
+               EVP_DigestFinal_ex(&mdc_tmp,md_dat,&md_len);
                message_digest=PKCS7_digest_from_attributes(sk);
                if (!message_digest)
                        {
@@ -753,7 +953,7 @@ for (ii=0; ii<md_len; ii++) printf("%02X",md_dat[ii]); printf(" calc\n");
                        goto err;
                        }
 
-               EVP_VerifyInit(&mdc_tmp,EVP_get_digestbynid(md_type));
+               EVP_VerifyInit_ex(&mdc_tmp,EVP_get_digestbynid(md_type), NULL);
 
                alen = ASN1_item_i2d((ASN1_VALUE *)sk, &abuf,
                                                ASN1_ITEM_rptr(PKCS7_ATTR_VERIFY));
@@ -769,7 +969,14 @@ for (ii=0; ii<md_len; ii++) printf("%02X",md_dat[ii]); printf(" calc\n");
                ret = -1;
                goto err;
                }
+#if 0
+#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
+#endif
 
        i=EVP_VerifyFinal(&mdc_tmp,os->data,os->length, pkey);
        EVP_PKEY_free(pkey);
@@ -783,6 +990,7 @@ for (ii=0; ii<md_len; ii++) printf("%02X",md_dat[ii]); printf(" calc\n");
        else
                ret=1;
 err:
+       EVP_MD_CTX_cleanup(&mdc_tmp);
        return(ret);
        }