X-Git-Url: http://wagner.pp.ru/gitweb/?a=blobdiff_plain;f=gost_ec_keyx.c;h=503d80ba173a3a8e592e66733dfdc16c9e85f851;hb=3383ad117b305cad929bc2aa57f5b724fe699b9a;hp=1e17f8356030e6d26b04e3f78bc611e53a42b196;hpb=be65ae82130e6908c88b975597d05f128057a287;p=openssl-gost%2Fengine.git

diff --git a/gost_ec_keyx.c b/gost_ec_keyx.c
index 1e17f83..503d80b 100644
--- a/gost_ec_keyx.c
+++ b/gost_ec_keyx.c
@@ -229,7 +229,7 @@ int pkey_gost_ec_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen)
  * Implementation of GOST2001/12 key transport, cryptopro variation
  */
 
-int pkey_GOST_ECcp_encrypt(EVP_PKEY_CTX *pctx, unsigned char *out,
+static int pkey_GOST_ECcp_encrypt(EVP_PKEY_CTX *pctx, unsigned char *out,
                            size_t *out_len, const unsigned char *key,
                            size_t key_len)
 {
@@ -346,7 +346,7 @@ int pkey_GOST_ECcp_encrypt(EVP_PKEY_CTX *pctx, unsigned char *out,
  * EVP_PKEY_METHOD callback decrypt
  * Implementation of GOST2018 key transport
  */
-int pkey_gost2018_encrypt(EVP_PKEY_CTX *pctx, unsigned char *out,
+static int pkey_gost2018_encrypt(EVP_PKEY_CTX *pctx, unsigned char *out,
                           size_t *out_len, const unsigned char *key,
                           size_t key_len)
 {
@@ -435,11 +435,25 @@ int pkey_gost2018_encrypt(EVP_PKEY_CTX *pctx, unsigned char *out,
     return ret;
 }
 
+int pkey_gost_encrypt(EVP_PKEY_CTX *pctx, unsigned char *out,
+                      size_t *out_len, const unsigned char *key, size_t key_len)
+{
+    struct gost_pmeth_data *data = EVP_PKEY_CTX_get_data(pctx);
+    if (data->shared_ukm == NULL || data->shared_ukm_size == 8)
+        return pkey_GOST_ECcp_encrypt(pctx, out, out_len, key, key_len);
+    else if (data->shared_ukm_size == 32)
+        return pkey_gost2018_encrypt(pctx, out, out_len, key, key_len);
+    else {
+        GOSTerr(GOST_F_PKEY_GOST_ENCRYPT, ERR_R_INTERNAL_ERROR);
+        return -1;
+    }
+}
+
 /*
  * EVP_PKEY_METHOD callback decrypt
  * Implementation of GOST2001/12 key transport, cryptopro variation
  */
-int pkey_GOST_ECcp_decrypt(EVP_PKEY_CTX *pctx, unsigned char *key,
+static int pkey_GOST_ECcp_decrypt(EVP_PKEY_CTX *pctx, unsigned char *key,
                            size_t *key_len, const unsigned char *in,
                            size_t in_len)
 {
@@ -528,7 +542,7 @@ int pkey_GOST_ECcp_decrypt(EVP_PKEY_CTX *pctx, unsigned char *key,
  * EVP_PKEY_METHOD callback decrypt
  * Implementation of GOST2018 key transport
  */
-int pkey_gost2018_decrypt(EVP_PKEY_CTX *pctx, unsigned char *key,
+static int pkey_gost2018_decrypt(EVP_PKEY_CTX *pctx, unsigned char *key,
                           size_t *key_len, const unsigned char *in,
                           size_t in_len)
 {
@@ -539,7 +553,7 @@ int pkey_gost2018_decrypt(EVP_PKEY_CTX *pctx, unsigned char *key,
     int ret = 0;
     unsigned char expkeys[64];
     EVP_PKEY *eph_key = NULL;
-    int pkey_nid = EVP_PKEY_base_id(eph_key);
+    int pkey_nid = EVP_PKEY_base_id(priv);
     int mac_nid = NID_undef;
     int iv_len = 0;
 
@@ -570,7 +584,17 @@ int pkey_gost2018_decrypt(EVP_PKEY_CTX *pctx, unsigned char *key,
     }
 
     eph_key = X509_PUBKEY_get(pst->ephem_key);
+/*
+ * TODO beldmit
+   1.  Checks the next three conditions fulfilling and terminates the
+   connection with fatal error if not.
+
+   o  Q_eph is on the same curve as server public key;
 
+   o  Q_eph is not equal to zero point;
+
+   o  q * Q_eph is not equal to zero point.
+*/
     if (gost_keg(data->shared_ukm, pkey_nid,
                  EC_KEY_get0_public_key(EVP_PKEY_get0(eph_key)),
                  EVP_PKEY_get0(priv), expkeys) <= 0) {
@@ -593,3 +617,17 @@ int pkey_gost2018_decrypt(EVP_PKEY_CTX *pctx, unsigned char *key,
     PSKeyTransport_gost_free(pst);
     return ret;
 }
+
+int pkey_gost_decrypt(EVP_PKEY_CTX *pctx, unsigned char *key,
+                      size_t *key_len, const unsigned char *in, size_t in_len)
+{
+    struct gost_pmeth_data *data = EVP_PKEY_CTX_get_data(pctx);
+    if (data->shared_ukm == NULL || data->shared_ukm_size == 8)
+        return pkey_GOST_ECcp_decrypt(pctx, key, key_len, in, in_len);
+    else if (data->shared_ukm_size == 32)
+        return pkey_gost2018_decrypt(pctx, key, key_len, in, in_len);
+    else {
+        GOSTerr(GOST_F_PKEY_GOST_DECRYPT, ERR_R_INTERNAL_ERROR);
+        return -1;
+    }
+}