* https://www.openssl.org/source/license.html
*/
+#include <string.h>
#include <openssl/core_names.h>
#include <openssl/params.h>
+#include <openssl/evp.h>
+#include "internal/sizes.h"
+#include "internal/param_build_set.h"
#include "crypto/rsa.h"
+#include "e_os.h" /* strcasecmp for Windows() */
+
/*
* The intention with the "backend" source file is to offer backend support
* for legacy backends (EVP_PKEY_ASN1_METHOD and EVP_PKEY_METHOD) and provider
sk_BIGNUM_const_free(coeffs);
return ret;
}
+
+int rsa_pss_params_30_todata(const RSA_PSS_PARAMS_30 *pss, const char *propq,
+ OSSL_PARAM_BLD *bld, OSSL_PARAM params[])
+{
+ if (!rsa_pss_params_30_is_unrestricted(pss)) {
+ int hashalg_nid = rsa_pss_params_30_hashalg(pss);
+ int maskgenalg_nid = rsa_pss_params_30_maskgenalg(pss);
+ int maskgenhashalg_nid = rsa_pss_params_30_maskgenhashalg(pss);
+ int saltlen = rsa_pss_params_30_saltlen(pss);
+ int default_hashalg_nid = rsa_pss_params_30_hashalg(NULL);
+ int default_maskgenalg_nid = rsa_pss_params_30_maskgenalg(NULL);
+ int default_maskgenhashalg_nid = rsa_pss_params_30_maskgenhashalg(NULL);
+ const char *mdname =
+ (hashalg_nid == default_hashalg_nid
+ ? NULL : rsa_oaeppss_nid2name(hashalg_nid));
+ const char *mgfname =
+ (maskgenalg_nid == default_maskgenalg_nid
+ ? NULL : rsa_oaeppss_nid2name(maskgenalg_nid));
+ const char *mgf1mdname =
+ (maskgenhashalg_nid == default_maskgenhashalg_nid
+ ? NULL : rsa_oaeppss_nid2name(maskgenhashalg_nid));
+ const char *key_md = OSSL_PKEY_PARAM_RSA_DIGEST;
+ const char *key_mgf = OSSL_PKEY_PARAM_RSA_MASKGENFUNC;
+ const char *key_mgf1_md = OSSL_PKEY_PARAM_RSA_MGF1_DIGEST;
+ const char *key_saltlen = OSSL_PKEY_PARAM_RSA_PSS_SALTLEN;
+
+ /*
+ * To ensure that the key isn't seen as unrestricted by the recipient,
+ * we make sure that at least one PSS-related parameter is passed, even
+ * if it has a default value; saltlen.
+ */
+ if ((mdname != NULL
+ && !ossl_param_build_set_utf8_string(bld, params, key_md, mdname))
+ || (mgfname != NULL
+ && !ossl_param_build_set_utf8_string(bld, params,
+ key_mgf, mgfname))
+ || (mgf1mdname != NULL
+ && !ossl_param_build_set_utf8_string(bld, params,
+ key_mgf1_md, mgf1mdname))
+ || (!ossl_param_build_set_int(bld, params, key_saltlen, saltlen)))
+ return 0;
+ }
+ return 1;
+}
+
+int rsa_pss_params_30_fromdata(RSA_PSS_PARAMS_30 *pss_params,
+ const OSSL_PARAM params[], OPENSSL_CTX *libctx)
+{
+ const OSSL_PARAM *param_md, *param_mgf, *param_mgf1md, *param_saltlen;
+ EVP_MD *md = NULL, *mgf1md = NULL;
+ int saltlen;
+ int ret = 0;
+
+ if (pss_params == NULL)
+ return 0;
+
+ param_md =
+ OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_DIGEST);
+ param_mgf =
+ OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_MASKGENFUNC);
+ param_mgf1md =
+ OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_MGF1_DIGEST);
+ param_saltlen =
+ OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_RSA_PSS_SALTLEN);
+
+ /*
+ * If we get any of the parameters, we know we have at least some
+ * restrictions, so we start by setting default values, and let each
+ * parameter override their specific restriction data.
+ */
+ if (param_md != NULL || param_mgf != NULL || param_mgf1md != NULL
+ || param_saltlen != NULL)
+ if (!rsa_pss_params_30_set_defaults(pss_params))
+ return 0;
+
+ if (param_mgf != NULL) {
+ int default_maskgenalg_nid = rsa_pss_params_30_maskgenalg(NULL);
+ const char *mgfname = NULL;
+
+ if (param_mgf->data_type == OSSL_PARAM_UTF8_STRING)
+ mgfname = param_mgf->data;
+ else if (!OSSL_PARAM_get_utf8_ptr(param_mgf, &mgfname))
+ return 0;
+
+ /* TODO Revisit this if / when a new MGF algorithm appears */
+ if (strcasecmp(param_mgf->data,
+ rsa_mgf_nid2name(default_maskgenalg_nid)) != 0)
+ return 0;
+ }
+
+ /*
+ * We're only interested in the NIDs that correspond to the MDs, so the
+ * exact propquery is unimportant in the EVP_MD_fetch() calls below.
+ */
+
+ if (param_md != NULL) {
+ const char *mdname = NULL;
+
+ if (param_md->data_type == OSSL_PARAM_UTF8_STRING)
+ mdname = param_md->data;
+ else if (!OSSL_PARAM_get_utf8_ptr(param_mgf, &mdname))
+ goto err;
+
+ if ((md = EVP_MD_fetch(libctx, mdname, NULL)) == NULL
+ || !rsa_pss_params_30_set_hashalg(pss_params,
+ rsa_oaeppss_md2nid(md)))
+ goto err;
+ }
+
+ if (param_mgf1md != NULL) {
+ const char *mgf1mdname = NULL;
+
+ if (param_mgf1md->data_type == OSSL_PARAM_UTF8_STRING)
+ mgf1mdname = param_mgf1md->data;
+ else if (!OSSL_PARAM_get_utf8_ptr(param_mgf, &mgf1mdname))
+ goto err;
+
+ if ((mgf1md = EVP_MD_fetch(libctx, mgf1mdname, NULL)) == NULL
+ || !rsa_pss_params_30_set_maskgenhashalg(pss_params,
+ rsa_oaeppss_md2nid(mgf1md)))
+ goto err;
+ }
+
+ if (param_saltlen != NULL) {
+ if (!OSSL_PARAM_get_int(param_saltlen, &saltlen)
+ || !rsa_pss_params_30_set_saltlen(pss_params, saltlen))
+ goto err;
+ }
+
+ ret = 1;
+
+ err:
+ EVP_MD_free(md);
+ EVP_MD_free(mgf1md);
+ return ret;
+}
projects / thirdparty / openssl.git / blobdiff