-int ASN1_item_sign(const ASN1_ITEM *it, X509_ALGOR *algor1, X509_ALGOR *algor2,
- ASN1_BIT_STRING *signature, void *asn, EVP_PKEY *pkey,
- const EVP_MD *type)
- {
- EVP_MD_CTX ctx;
- unsigned char *buf_in=NULL,*buf_out=NULL;
- int i,inl=0,outl=0,outll=0;
- X509_ALGOR *a;
+int ASN1_item_sign(const ASN1_ITEM *it, X509_ALGOR *algor1,
+ X509_ALGOR *algor2, ASN1_BIT_STRING *signature, void *asn,
+ EVP_PKEY *pkey, const EVP_MD *type)
+{
+ EVP_MD_CTX ctx;
+ EVP_MD_CTX_init(&ctx);
+ if (!EVP_DigestSignInit(&ctx, NULL, type, NULL, pkey)) {
+ EVP_MD_CTX_cleanup(&ctx);
+ return 0;
+ }
+ return ASN1_item_sign_ctx(it, algor1, algor2, signature, asn, &ctx);
+}
+
+int ASN1_item_sign_ctx(const ASN1_ITEM *it,
+ X509_ALGOR *algor1, X509_ALGOR *algor2,
+ ASN1_BIT_STRING *signature, void *asn, EVP_MD_CTX *ctx)
+{
+ const EVP_MD *type;
+ EVP_PKEY *pkey;
+ unsigned char *buf_in = NULL, *buf_out = NULL;
+ size_t inl = 0, outl = 0, outll = 0;
+ int signid, paramtype;
+ int rv;
+
+ type = EVP_MD_CTX_md(ctx);
+ pkey = EVP_PKEY_CTX_get0_pkey(ctx->pctx);
+
+ if (!type || !pkey) {
+ ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ASN1_R_CONTEXT_NOT_INITIALISED);
+ return 0;
+ }
+
+ if (pkey->ameth->item_sign) {
+ rv = pkey->ameth->item_sign(ctx, it, asn, algor1, algor2, signature);
+ if (rv == 1)
+ outl = signature->length;
+ /*-
+ * Return value meanings:
+ * <=0: error.
+ * 1: method does everything.
+ * 2: carry on as normal.
+ * 3: ASN1 method sets algorithm identifiers: just sign.
+ */
+ if (rv <= 0)
+ ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX, ERR_R_EVP_LIB);
+ if (rv <= 1)
+ goto err;
+ } else
+ rv = 2;
+
+ if (rv == 2) {
+ if (type->flags & EVP_MD_FLAG_PKEY_METHOD_SIGNATURE) {
+ if (!pkey->ameth ||
+ !OBJ_find_sigid_by_algs(&signid,
+ EVP_MD_nid(type),
+ pkey->ameth->pkey_id)) {
+ ASN1err(ASN1_F_ASN1_ITEM_SIGN_CTX,
+ ASN1_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED);
+ return 0;
+ }
+ } else
+ signid = type->pkey_type;
+
+ if (pkey->ameth->pkey_flags & ASN1_PKEY_SIGPARAM_NULL)
+ paramtype = V_ASN1_NULL;
+ else
+ paramtype = V_ASN1_UNDEF;
+
+ if (algor1)
+ X509_ALGOR_set0(algor1, OBJ_nid2obj(signid), paramtype, NULL);
+ if (algor2)
+ X509_ALGOR_set0(algor2, OBJ_nid2obj(signid), paramtype, NULL);
+
+ }