Add EVP_KDF-X942 to the fips module

[openssl.git] / crypto / dh / dh_kdf.c

diff --git a/crypto/dh/dh_kdf.c b/crypto/dh/dh_kdf.c
index 50a1df858af6d9652cd1b6b342232b45b01aa1fa..ea2cd6386cecd297f1077ae173b361982425f4d9 100644 (file)
--- a/crypto/dh/dh_kdf.c
+++ b/crypto/dh/dh_kdf.c
@@ -14,40 +14,34 @@
 #include "internal/deprecated.h"
 
 #include "e_os.h"
+#include "e_os.h"
+#include <string.h>
+#include <openssl/core_names.h>
+#include <openssl/dh.h>
+#include <openssl/evp.h>
+#include <openssl/asn1.h>
+#include <openssl/kdf.h>
+#include <internal/provider.h>
+#include <crypto/dh.h>
 
-#ifndef OPENSSL_NO_CMS
-# include <string.h>
-# include <openssl/core_names.h>
-# include <openssl/dh.h>
-# include <openssl/evp.h>
-# include <openssl/asn1.h>
-# include <openssl/kdf.h>
-# include <internal/provider.h>
-
-int DH_KDF_X9_42(unsigned char *out, size_t outlen,
-                 const unsigned char *Z, size_t Zlen,
-                 ASN1_OBJECT *key_oid,
-                 const unsigned char *ukm, size_t ukmlen, const EVP_MD *md)
+/* Key derivation function from X9.63/SECG */
+int dh_KDF_X9_42_asn1(unsigned char *out, size_t outlen,
+                      const unsigned char *Z, size_t Zlen,
+                      const char *cek_alg,
+                      const unsigned char *ukm, size_t ukmlen, const EVP_MD *md,
+                      OSSL_LIB_CTX *libctx, const char *propq)
 {
-    int ret = 0, nid;
+    int ret = 0;
     EVP_KDF_CTX *kctx = NULL;
     EVP_KDF *kdf = NULL;
-    const char *oid_sn;
     OSSL_PARAM params[5], *p = params;
     const char *mdname = EVP_MD_name(md);
-    const OSSL_PROVIDER *prov = EVP_MD_provider(md);
-    OPENSSL_CTX *provctx = ossl_provider_library_context(prov);
 
-    nid = OBJ_obj2nid(key_oid);
-    if (nid == NID_undef)
-        return 0;
-    oid_sn = OBJ_nid2sn(nid);
-    if (oid_sn == NULL)
-        return 0;
-
-    kdf = EVP_KDF_fetch(provctx, OSSL_KDF_NAME_X942KDF, NULL);
-    if ((kctx = EVP_KDF_new_ctx(kdf)) == NULL)
+    kdf = EVP_KDF_fetch(libctx, OSSL_KDF_NAME_X942KDF_ASN1, propq);
+    kctx = EVP_KDF_CTX_new(kdf);
+    if (kctx == NULL)
         goto err;
+
     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_KDF_PARAM_DIGEST,
                                             (char *)mdname, 0);
     *p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_KEY,
@@ -56,13 +50,35 @@ int DH_KDF_X9_42(unsigned char *out, size_t outlen,
         *p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_UKM,
                                                  (unsigned char *)ukm, ukmlen);
     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_KDF_PARAM_CEK_ALG,
-                                            (char *)oid_sn, 0);
+                                            (char *)cek_alg, 0);
     *p = OSSL_PARAM_construct_end();
-    ret = EVP_KDF_set_ctx_params(kctx, params) > 0
-        && EVP_KDF_derive(kctx, out, outlen) > 0;
+    ret = EVP_KDF_CTX_set_params(kctx, params) > 0
+          && EVP_KDF_derive(kctx, out, outlen) > 0;
 err:
-    EVP_KDF_free_ctx(kctx);
+    EVP_KDF_CTX_free(kctx);
     EVP_KDF_free(kdf);
     return ret;
 }
-#endif /* OPENSSL_NO_CMS */
+
+#if !defined(FIPS_MODULE)
+int DH_KDF_X9_42(unsigned char *out, size_t outlen,
+                 const unsigned char *Z, size_t Zlen,
+                 ASN1_OBJECT *key_oid,
+                 const unsigned char *ukm, size_t ukmlen, const EVP_MD *md)
+{
+    int nid;
+    const char *key_alg = NULL;
+    const OSSL_PROVIDER *prov = EVP_MD_provider(md);
+    OSSL_LIB_CTX *libctx = ossl_provider_libctx(prov);
+
+    nid = OBJ_obj2nid(key_oid);
+    if (nid == NID_undef)
+        return 0;
+    key_alg = OBJ_nid2sn(nid);
+    if (key_alg == NULL)
+        return 0;
+
+    return dh_KDF_X9_42_asn1(out, outlen, Z, Zlen, key_alg,
+                             ukm, ukmlen, md, libctx, NULL);
+}
+#endif /* !defined(FIPS_MODULE) */