travis-ci: Add clang build for linux/x86_64/openssl-master

[openssl-gost/engine.git] / gost89.c

diff --git a/gost89.c b/gost89.c
index ccf338e29d8a3acf5e363dde47206f8a2da87ff5..593bc237257cd568594a4a5a03a69bce3d2382e2 100644 (file)
--- a/gost89.c
+++ b/gost89.c
@@ -242,8 +242,15 @@ const byte CryptoProKeyMeshingKey[] = {
     0xC0, 0x86, 0xDC, 0xC2, 0xEF, 0x4C, 0xA9, 0x2B
 };
 
+const byte ACPKM_D_const[] = {
+    0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
+    0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F,
+    0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
+    0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F,
+};
+
 /* Initialization of gost_ctx subst blocks*/
-static void kboxinit(gost_ctx * c, const gost_subst_block * b)
+void kboxinit(gost_ctx * c, const gost_subst_block * b)
 {
     int i;
 
@@ -438,7 +445,7 @@ void gost_enc_with_key(gost_ctx * c, byte * key, byte * inblock,
     gostcrypt(c, inblock, outblock);
 }
 
-/* Set 256 bit  key into context */
+/* Set 256 bit gost89 key into context */
 void gost_key(gost_ctx * c, const byte * k)
 {
     int i, j;
@@ -449,18 +456,18 @@ void gost_key(gost_ctx * c, const byte * k)
     }
 }
 
-/* Set 256 bit  key into context */
+/* Set 256 bit Magma key into context */
 void magma_key(gost_ctx * c, const byte * k)
 {
     int i, j;
     for (i = 0, j = 0; i < 8; i++, j += 4) {
         c->k[i] =
-            k[j+3] | (k[j + 2] << 8) | (k[j + 1] << 16) | ((word32) k[j] <<
-                                                         24);
+            k[j + 3] | (k[j + 2] << 8) | (k[j + 1] << 16) | ((word32) k[j] <<
+                                                             24);
     }
 }
 
-/* Retrieve 256-bit key from context */
+/* Retrieve 256-bit gost89 key from context */
 void gost_get_key(gost_ctx * c, byte * k)
 {
     int i, j;
@@ -472,6 +479,18 @@ void gost_get_key(gost_ctx * c, byte * k)
     }
 }
 
+/* Retrieve 256-bit magma key from context */
+void magma_get_key(gost_ctx * c, byte * k)
+{
+    int i, j;
+    for (i = 0, j = 0; i < 8; i++, j += 4) {
+        k[j + 3] = (byte) (c->k[i] & 0xFF);
+        k[j + 2] = (byte) ((c->k[i] >> 8) & 0xFF);
+        k[j + 1] = (byte) ((c->k[i] >> 16) & 0xFF);
+        k[j + 0] = (byte) ((c->k[i] >> 24) & 0xFF);
+    }
+}
+
 /* Initalize context. Provides default value for subst_block */
 void gost_init(gost_ctx * c, const gost_subst_block * b)
 {
@@ -602,13 +621,34 @@ int gost_mac_iv(gost_ctx * ctx, int mac_len, const unsigned char *iv,
 /* Implements key meshing algorithm by modifing ctx and IV in place */
 void cryptopro_key_meshing(gost_ctx * ctx, unsigned char *iv)
 {
-    unsigned char newkey[32], newiv[8];
+    unsigned char newkey[32];
     /* Set static keymeshing key */
     /* "Decrypt" key with keymeshing key */
     gost_dec(ctx, CryptoProKeyMeshingKey, newkey, 4);
     /* set new key */
     gost_key(ctx, newkey);
     /* Encrypt iv with new key */
-    gostcrypt(ctx, iv, newiv);
-    memcpy(iv, newiv, 8);
+    if (iv != NULL ) {
+        unsigned char newiv[8];
+        gostcrypt(ctx, iv, newiv);
+        memcpy(iv, newiv, 8);
+    }
+}
+
+void acpkm_magma_key_meshing(gost_ctx * ctx)
+{
+    unsigned char newkey[32];
+    int i, j;
+    unsigned char buf[8], keybuf[8];
+
+    for (i = 0; i < 4; i++) {
+        for (j = 0; j < 8; j++) {
+            buf[j] = ACPKM_D_const[8 * i + 7 - j];
+        }
+        gostcrypt(ctx, buf, keybuf);
+        memcpy(newkey + 8 * i, keybuf + 4, 4);
+        memcpy(newkey + 8 * i + 4, keybuf, 4);
+    }
+    /* set new key */
+    gost_key(ctx, newkey);
 }