X-Git-Url: https://wagner.pp.ru/gitweb/?a=blobdiff_plain;f=gost_crypt.c;h=8277fa2536b3713bf1f9d37a427049c3bd0994af;hb=c6b44c8eaf68bf045805163a8825e5440632653e;hp=ab5197e4dd8bfbb60161d80654419d9eb4966ee5;hpb=ac616531eb3a22e7926fe0f01c11e1631923b261;p=openssl-gost%2Fengine.git

diff --git a/gost_crypt.c b/gost_crypt.c
index ab5197e..8277fa2 100644
--- a/gost_crypt.c
+++ b/gost_crypt.c
@@ -69,22 +69,54 @@ static int magma_get_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params);
 static int magma_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr);
 static int magma_cipher_ctl_acpkm_omac(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr);
 
+/*
+ * Single level template accessor.
+ * Note: that you cannot template 0 value.
+ */
+#define TPL(st,field) ( \
+    ((st)->field) ?: TPL_VAL(st,field) \
+)
+
+#define TPL_VAL(st,field) ( \
+    ((st)->template ? (st)->template->field : 0) \
+)
+
 EVP_CIPHER *GOST_init_cipher(GOST_cipher *c)
 {
     if (c->cipher)
         return c->cipher;
 
+    /* Some sanity checking. */
+    int flags = c->flags | TPL_VAL(c, flags);
+    int block_size = TPL(c, block_size);
+    switch (flags & EVP_CIPH_MODE) {
+    case EVP_CIPH_CTR_MODE:
+    case EVP_CIPH_CFB_MODE:
+    case EVP_CIPH_OFB_MODE:
+        OPENSSL_assert(block_size == 1);
+        OPENSSL_assert(flags & EVP_CIPH_NO_PADDING);
+        break;
+    default:
+        OPENSSL_assert(block_size != 1);
+        OPENSSL_assert(!(flags & EVP_CIPH_NO_PADDING));
+    }
+
+    if (TPL(c, iv_len))
+        OPENSSL_assert(flags & EVP_CIPH_CUSTOM_IV);
+    else
+        OPENSSL_assert(!(flags & EVP_CIPH_CUSTOM_IV));
+
     EVP_CIPHER *cipher;
-    if (!(cipher = EVP_CIPHER_meth_new(c->nid, c->block_size, c->key_len))
-        || !EVP_CIPHER_meth_set_iv_length(cipher, c->iv_len)
-        || !EVP_CIPHER_meth_set_flags(cipher, c->flags)
-        || !EVP_CIPHER_meth_set_init(cipher, c->init)
-        || !EVP_CIPHER_meth_set_do_cipher(cipher, c->do_cipher)
-        || !EVP_CIPHER_meth_set_cleanup(cipher, c->cleanup)
-        || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, c->ctx_size)
-        || !EVP_CIPHER_meth_set_set_asn1_params(cipher, c->set_asn1_parameters)
-        || !EVP_CIPHER_meth_set_get_asn1_params(cipher, c->get_asn1_parameters)
-        || !EVP_CIPHER_meth_set_ctrl(cipher, c->ctrl)) {
+    if (!(cipher = EVP_CIPHER_meth_new(c->nid, block_size, TPL(c, key_len)))
+        || !EVP_CIPHER_meth_set_iv_length(cipher, TPL(c, iv_len))
+        || !EVP_CIPHER_meth_set_flags(cipher, flags)
+        || !EVP_CIPHER_meth_set_init(cipher, TPL(c, init))
+        || !EVP_CIPHER_meth_set_do_cipher(cipher, TPL(c, do_cipher))
+        || !EVP_CIPHER_meth_set_cleanup(cipher, TPL(c, cleanup))
+        || !EVP_CIPHER_meth_set_impl_ctx_size(cipher, TPL(c, ctx_size))
+        || !EVP_CIPHER_meth_set_set_asn1_params(cipher, TPL(c, set_asn1_parameters))
+        || !EVP_CIPHER_meth_set_get_asn1_params(cipher, TPL(c, get_asn1_parameters))
+        || !EVP_CIPHER_meth_set_ctrl(cipher, TPL(c, ctrl))) {
         EVP_CIPHER_meth_free(cipher);
         cipher = NULL;
     }
@@ -100,18 +132,13 @@ void GOST_deinit_cipher(GOST_cipher *c)
     }
 }
 
-GOST_cipher Gost28147_89_cipher = {
-    .nid = NID_id_Gost28147_89,
-    .block_size = 1,
+static GOST_cipher gost_template_cipher = {
+    .block_size = 8,
     .key_len = 32,
     .iv_len = 8,
-    .flags = EVP_CIPH_CFB_MODE |
-        EVP_CIPH_NO_PADDING |
-        EVP_CIPH_CUSTOM_IV |
+    .flags = EVP_CIPH_CUSTOM_IV |
         EVP_CIPH_RAND_KEY |
         EVP_CIPH_ALWAYS_CALL_INIT,
-    .init = gost_cipher_init,
-    .do_cipher = gost_cipher_do_cfb,
     .cleanup = gost_cipher_cleanup,
     .ctx_size = sizeof(struct ossl_gost_cipher_ctx),
     .set_asn1_parameters = gost89_set_asn1_parameters,
@@ -119,192 +146,101 @@ GOST_cipher Gost28147_89_cipher = {
     .ctrl = gost_cipher_ctl,
 };
 
+GOST_cipher Gost28147_89_cipher = {
+    .nid = NID_id_Gost28147_89,
+    .template = &gost_template_cipher,
+    .block_size = 1,
+    .flags = EVP_CIPH_CFB_MODE |
+        EVP_CIPH_NO_PADDING,
+    .init = gost_cipher_init,
+    .do_cipher = gost_cipher_do_cfb,
+};
+
 GOST_cipher Gost28147_89_cbc_cipher = {
     .nid = NID_gost89_cbc,
-    .block_size = 8,
-    .key_len = 32,
-    .iv_len = 8,
-    .flags = EVP_CIPH_CBC_MODE |
-        EVP_CIPH_CUSTOM_IV |
-        EVP_CIPH_RAND_KEY |
-        EVP_CIPH_ALWAYS_CALL_INIT,
+    .template = &gost_template_cipher,
+    .flags = EVP_CIPH_CBC_MODE,
     .init = gost_cipher_init_cbc,
     .do_cipher = gost_cipher_do_cbc,
-    .cleanup = gost_cipher_cleanup,
-    .ctx_size = sizeof(struct ossl_gost_cipher_ctx),
-    .set_asn1_parameters = gost89_set_asn1_parameters,
-    .get_asn1_parameters = gost89_get_asn1_parameters,
-    .ctrl = gost_cipher_ctl,
 };
 
 GOST_cipher Gost28147_89_cnt_cipher = {
     .nid = NID_gost89_cnt,
+    .template = &gost_template_cipher,
     .block_size = 1,
-    .key_len = 32,
-    .iv_len = 8,
     .flags = EVP_CIPH_OFB_MODE |
-        EVP_CIPH_NO_PADDING |
-        EVP_CIPH_CUSTOM_IV |
-        EVP_CIPH_RAND_KEY |
-        EVP_CIPH_ALWAYS_CALL_INIT,
+        EVP_CIPH_NO_PADDING,
     .init = gost_cipher_init_cpa,
     .do_cipher = gost_cipher_do_cnt,
-    .cleanup = gost_cipher_cleanup,
-    .ctx_size = sizeof(struct ossl_gost_cipher_ctx),
-    .set_asn1_parameters = gost89_set_asn1_parameters,
-    .get_asn1_parameters = gost89_get_asn1_parameters,
-    .ctrl = gost_cipher_ctl,
 };
 
 GOST_cipher Gost28147_89_cnt_12_cipher = {
     .nid = NID_gost89_cnt_12,
+    .template = &gost_template_cipher,
     .block_size = 1,
+    .flags = EVP_CIPH_OFB_MODE |
+        EVP_CIPH_NO_PADDING,
+    .init = gost_cipher_init_cp_12,
+    .do_cipher = gost_cipher_do_cnt,
+};
+
+static GOST_cipher magma_template_cipher = {
+    .block_size = 8,
     .key_len = 32,
     .iv_len = 8,
-    .flags = EVP_CIPH_OFB_MODE |
-        EVP_CIPH_NO_PADDING |
-        EVP_CIPH_CUSTOM_IV |
+    .flags = EVP_CIPH_CUSTOM_IV |
         EVP_CIPH_RAND_KEY |
         EVP_CIPH_ALWAYS_CALL_INIT,
-    .init = gost_cipher_init_cp_12,
-    .do_cipher = gost_cipher_do_cnt,
     .cleanup = gost_cipher_cleanup,
     .ctx_size = sizeof(struct ossl_gost_cipher_ctx),
-    .set_asn1_parameters = gost89_set_asn1_parameters,
-    .get_asn1_parameters = gost89_get_asn1_parameters,
-    .ctrl = gost_cipher_ctl,
+    .set_asn1_parameters = magma_set_asn1_parameters,
+    .get_asn1_parameters = magma_get_asn1_parameters,
+    .do_cipher = magma_cipher_do_ctr,
+    .ctrl = magma_cipher_ctl,
 };
 
-static EVP_CIPHER *_hidden_magma_ctr = NULL;
-const EVP_CIPHER *cipher_magma_ctr(void)
-{
-    if (_hidden_magma_ctr == NULL
-        && ((_hidden_magma_ctr =
-             EVP_CIPHER_meth_new(NID_magma_ctr, 1 /* block_size */ ,
-                                 32 /* key_size */ )) == NULL
-            || !EVP_CIPHER_meth_set_iv_length(_hidden_magma_ctr, 4)
-            || !EVP_CIPHER_meth_set_flags(_hidden_magma_ctr,
-                                          EVP_CIPH_CTR_MODE |
-                                          EVP_CIPH_NO_PADDING |
-                                          EVP_CIPH_CUSTOM_IV |
-                                          EVP_CIPH_RAND_KEY |
-                                          EVP_CIPH_ALWAYS_CALL_INIT)
-            || !EVP_CIPHER_meth_set_init(_hidden_magma_ctr, magma_cipher_init)
-            || !EVP_CIPHER_meth_set_do_cipher(_hidden_magma_ctr,
-                                              magma_cipher_do_ctr)
-            || !EVP_CIPHER_meth_set_cleanup(_hidden_magma_ctr,
-                                            gost_cipher_cleanup)
-            || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_magma_ctr,
-                                                  sizeof(struct
-                                                         ossl_gost_cipher_ctx))
-            || !EVP_CIPHER_meth_set_set_asn1_params(_hidden_magma_ctr,
-                                                    magma_set_asn1_parameters)
-            || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_magma_ctr,
-                                                    magma_get_asn1_parameters)
-            || !EVP_CIPHER_meth_set_ctrl(_hidden_magma_ctr, magma_cipher_ctl))) {
-        EVP_CIPHER_meth_free(_hidden_magma_ctr);
-        _hidden_magma_ctr = NULL;
-    }
-    return _hidden_magma_ctr;
-}
+GOST_cipher magma_ctr_cipher = {
+    .nid = NID_magma_ctr,
+    .template = &magma_template_cipher,
+    .block_size = 1,
+    .iv_len = 4,
+    .flags = EVP_CIPH_CTR_MODE |
+        EVP_CIPH_NO_PADDING,
+    .init = magma_cipher_init,
+};
 
-static EVP_CIPHER *_hidden_magma_ctr_acpkm = NULL;
-const EVP_CIPHER *cipher_magma_ctr_acpkm(void)
-{
-    if (_hidden_magma_ctr_acpkm == NULL
-        && ((_hidden_magma_ctr_acpkm =
-             EVP_CIPHER_meth_new(NID_magma_ctr_acpkm, 1 /* block_size */ ,
-                                 32 /* key_size */ )) == NULL
-            || !EVP_CIPHER_meth_set_iv_length(_hidden_magma_ctr_acpkm, 4)
-            || !EVP_CIPHER_meth_set_flags(_hidden_magma_ctr_acpkm,
-                                          EVP_CIPH_CTR_MODE |
-                                          EVP_CIPH_NO_PADDING |
-                                          EVP_CIPH_CUSTOM_IV |
-                                          EVP_CIPH_RAND_KEY |
-                                          EVP_CIPH_ALWAYS_CALL_INIT)
-            || !EVP_CIPHER_meth_set_init(_hidden_magma_ctr_acpkm, magma_cipher_init)
-            || !EVP_CIPHER_meth_set_do_cipher(_hidden_magma_ctr_acpkm,
-                                              magma_cipher_do_ctr)
-            || !EVP_CIPHER_meth_set_cleanup(_hidden_magma_ctr_acpkm,
-                                            gost_cipher_cleanup)
-            || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_magma_ctr_acpkm,
-                                                  sizeof(struct
-                                                         ossl_gost_cipher_ctx))
-            || !EVP_CIPHER_meth_set_set_asn1_params(_hidden_magma_ctr_acpkm,
-                                                    magma_set_asn1_parameters)
-            || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_magma_ctr_acpkm,
-                                                    magma_get_asn1_parameters)
-
-            || !EVP_CIPHER_meth_set_ctrl(_hidden_magma_ctr_acpkm, magma_cipher_ctl))) {
-        EVP_CIPHER_meth_free(_hidden_magma_ctr_acpkm);
-        _hidden_magma_ctr_acpkm = NULL;
-    }
-    return _hidden_magma_ctr_acpkm;
-}
+GOST_cipher magma_ctr_acpkm_cipher = {
+    .nid = NID_magma_ctr_acpkm,
+    .template = &magma_template_cipher,
+    .block_size = 1,
+    .iv_len = 4,
+    .flags = EVP_CIPH_CTR_MODE |
+        EVP_CIPH_NO_PADDING,
+    .init = magma_cipher_init,
+};
 
-static EVP_CIPHER *_hidden_magma_ctr_acpkm_omac = NULL;
-const EVP_CIPHER *cipher_magma_ctr_acpkm_omac(void)
-{
-    if (_hidden_magma_ctr_acpkm_omac == NULL
-        && ((_hidden_magma_ctr_acpkm_omac =
-             EVP_CIPHER_meth_new(NID_magma_ctr_acpkm_omac, 1 /* block_size */ ,
-                                 32 /* key_size */ )) == NULL
-            || !EVP_CIPHER_meth_set_iv_length(_hidden_magma_ctr_acpkm_omac, 4)
-            || !EVP_CIPHER_meth_set_flags(_hidden_magma_ctr_acpkm_omac,
-                                          EVP_CIPH_CTR_MODE |
-                                          EVP_CIPH_NO_PADDING |
-                                          EVP_CIPH_CUSTOM_IV |
-                                          EVP_CIPH_RAND_KEY |
-                                          EVP_CIPH_ALWAYS_CALL_INIT |
-																					EVP_CIPH_CUSTOM_COPY |
-																					EVP_CIPH_FLAG_CUSTOM_CIPHER |
-																					EVP_CIPH_FLAG_CIPHER_WITH_MAC)
-            || !EVP_CIPHER_meth_set_init(_hidden_magma_ctr_acpkm_omac, magma_cipher_init_ctr_acpkm_omac)
-            || !EVP_CIPHER_meth_set_do_cipher(_hidden_magma_ctr_acpkm_omac,
-                                              magma_cipher_do_ctr_acpkm_omac)
-            || !EVP_CIPHER_meth_set_cleanup(_hidden_magma_ctr_acpkm_omac,
-                                            gost_cipher_cleanup)
-            || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_magma_ctr_acpkm_omac,
-                                                  sizeof(struct
-                                                         ossl_gost_cipher_ctx))
-            || !EVP_CIPHER_meth_set_set_asn1_params(_hidden_magma_ctr_acpkm_omac,
-                                                    magma_set_asn1_parameters)
-            || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_magma_ctr_acpkm_omac,
-                                                    magma_get_asn1_parameters)
-            || !EVP_CIPHER_meth_set_ctrl(_hidden_magma_ctr_acpkm_omac, magma_cipher_ctl_acpkm_omac))) {
-        EVP_CIPHER_meth_free(_hidden_magma_ctr_acpkm_omac);
-        _hidden_magma_ctr_acpkm_omac = NULL;
-    }
-    return _hidden_magma_ctr_acpkm_omac;
-}
+GOST_cipher magma_ctr_acpkm_omac_cipher = {
+    .nid = NID_magma_ctr_acpkm_omac,
+    .template = &magma_template_cipher,
+    .block_size = 1,
+    .iv_len = 4,
+    .flags = EVP_CIPH_CTR_MODE |
+        EVP_CIPH_NO_PADDING |
+        EVP_CIPH_CUSTOM_COPY |
+        EVP_CIPH_FLAG_CUSTOM_CIPHER |
+        EVP_CIPH_FLAG_CIPHER_WITH_MAC,
+    .init = magma_cipher_init_ctr_acpkm_omac,
+    .do_cipher = magma_cipher_do_ctr_acpkm_omac,
+    .ctrl = magma_cipher_ctl_acpkm_omac,
+};
 
-static EVP_CIPHER *_hidden_magma_cbc = NULL;
-const EVP_CIPHER *cipher_magma_cbc(void)
-{
-    if (_hidden_magma_cbc == NULL
-        && ((_hidden_magma_cbc =
-             EVP_CIPHER_meth_new(NID_magma_cbc, 8 /* block_size */ ,
-                                 32 /* key_size */ )) == NULL
-            || !EVP_CIPHER_meth_set_iv_length(_hidden_magma_cbc, 8)
-            || !EVP_CIPHER_meth_set_flags(_hidden_magma_cbc,
-                                          EVP_CIPH_CBC_MODE |
-                                          EVP_CIPH_CUSTOM_IV |
-                                          EVP_CIPH_RAND_KEY |
-                                          EVP_CIPH_ALWAYS_CALL_INIT)
-            || !EVP_CIPHER_meth_set_init(_hidden_magma_cbc, magma_cipher_init)
-            || !EVP_CIPHER_meth_set_do_cipher(_hidden_magma_cbc,
-                                              magma_cipher_do_cbc)
-            || !EVP_CIPHER_meth_set_cleanup(_hidden_magma_cbc,
-                                            gost_cipher_cleanup)
-            || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_magma_cbc,
-                                                  sizeof(struct
-                                                         ossl_gost_cipher_ctx))
-            || !EVP_CIPHER_meth_set_ctrl(_hidden_magma_cbc, magma_cipher_ctl))) {
-        EVP_CIPHER_meth_free(_hidden_magma_cbc);
-        _hidden_magma_cbc = NULL;
-    }
-    return _hidden_magma_cbc;
-}
+GOST_cipher magma_cbc_cipher = {
+    .nid = NID_magma_cbc,
+    .template = &gost_template_cipher,
+    .flags = EVP_CIPH_CBC_MODE,
+    .init = magma_cipher_init,
+    .do_cipher = magma_cipher_do_cbc,
+};
 
 /* Implementation of GOST 28147-89 in MAC (imitovstavka) mode */
 /* Init functions which set specific parameters */