/**********************************************************************
- * gost_crypt.c *
+ * gost_crypt.c - Initialize all ciphers *
+ * *
* Copyright (c) 2005-2006 Cryptocom LTD *
+ * Copyright (c) 2020 Chikunov Vitaly <vt@altlinux.org> *
* This file is distributed under the same license as OpenSSL *
* *
* OpenSSL interface to GOST 28147-89 cipher functions *
const unsigned char *in, size_t inl);
/* Cleanup function */
static int gost_cipher_cleanup(EVP_CIPHER_CTX *);
+static int gost_magma_mgm_cleanup(EVP_CIPHER_CTX *c);
/* set/get cipher parameters */
static int gost89_set_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params);
static int gost89_get_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params);
const unsigned char *iv, int enc);
static int magma_cipher_init_ctr_acpkm_omac(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc);
+static int gost_magma_cipher_init_mgm(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc);
/* Handles block of data in CBC mode */
static int magma_cipher_do_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t inl);
static int magma_cipher_do_ctr_acpkm_omac(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t inl);
-
+static int gost_magma_cipher_do_mgm(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len);
/* set/get cipher parameters */
static int magma_set_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params);
static int magma_get_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params);
/* Control function */
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);
+static int gost_magma_mgm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
-static EVP_CIPHER *_hidden_Gost28147_89_cipher = NULL;
-const EVP_CIPHER *cipher_gost(void)
-{
- if (_hidden_Gost28147_89_cipher == NULL
- && ((_hidden_Gost28147_89_cipher =
- EVP_CIPHER_meth_new(NID_id_Gost28147_89, 1 /* block_size */ ,
- 32 /* key_size */ )) == NULL
- || !EVP_CIPHER_meth_set_iv_length(_hidden_Gost28147_89_cipher, 8)
- || !EVP_CIPHER_meth_set_flags(_hidden_Gost28147_89_cipher,
- EVP_CIPH_CFB_MODE |
- EVP_CIPH_NO_PADDING |
- EVP_CIPH_CUSTOM_IV |
- EVP_CIPH_RAND_KEY |
- EVP_CIPH_ALWAYS_CALL_INIT)
- || !EVP_CIPHER_meth_set_init(_hidden_Gost28147_89_cipher,
- gost_cipher_init)
- || !EVP_CIPHER_meth_set_do_cipher(_hidden_Gost28147_89_cipher,
- gost_cipher_do_cfb)
- || !EVP_CIPHER_meth_set_cleanup(_hidden_Gost28147_89_cipher,
- gost_cipher_cleanup)
- || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_Gost28147_89_cipher,
- sizeof(struct
- ossl_gost_cipher_ctx))
- ||
- !EVP_CIPHER_meth_set_set_asn1_params(_hidden_Gost28147_89_cipher,
- gost89_set_asn1_parameters)
- ||
- !EVP_CIPHER_meth_set_get_asn1_params(_hidden_Gost28147_89_cipher,
- gost89_get_asn1_parameters)
- || !EVP_CIPHER_meth_set_ctrl(_hidden_Gost28147_89_cipher,
- gost_cipher_ctl))) {
- EVP_CIPHER_meth_free(_hidden_Gost28147_89_cipher);
- _hidden_Gost28147_89_cipher = NULL;
- }
- return _hidden_Gost28147_89_cipher;
-}
+/*
+ * Single level template accessor.
+ * Note: that you cannot template 0 value.
+ */
+#define TPL(st,field) ( \
+ ((st)->field) ?: TPL_VAL(st,field) \
+)
-static EVP_CIPHER *_hidden_Gost28147_89_cbc = NULL;
-const EVP_CIPHER *cipher_gost_cbc(void)
-{
- if (_hidden_Gost28147_89_cbc == NULL
- && ((_hidden_Gost28147_89_cbc =
- EVP_CIPHER_meth_new(NID_gost89_cbc, 8 /* block_size */ ,
- 32 /* key_size */ )) == NULL
- || !EVP_CIPHER_meth_set_iv_length(_hidden_Gost28147_89_cbc, 8)
- || !EVP_CIPHER_meth_set_flags(_hidden_Gost28147_89_cbc,
- EVP_CIPH_CBC_MODE |
- EVP_CIPH_CUSTOM_IV |
- EVP_CIPH_RAND_KEY |
- EVP_CIPH_ALWAYS_CALL_INIT)
- || !EVP_CIPHER_meth_set_init(_hidden_Gost28147_89_cbc,
- gost_cipher_init_cbc)
- || !EVP_CIPHER_meth_set_do_cipher(_hidden_Gost28147_89_cbc,
- gost_cipher_do_cbc)
- || !EVP_CIPHER_meth_set_cleanup(_hidden_Gost28147_89_cbc,
- gost_cipher_cleanup)
- || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_Gost28147_89_cbc,
- sizeof(struct
- ossl_gost_cipher_ctx))
- || !EVP_CIPHER_meth_set_set_asn1_params(_hidden_Gost28147_89_cbc,
- gost89_set_asn1_parameters)
- || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_Gost28147_89_cbc,
- gost89_get_asn1_parameters)
- || !EVP_CIPHER_meth_set_ctrl(_hidden_Gost28147_89_cbc,
- gost_cipher_ctl))) {
- EVP_CIPHER_meth_free(_hidden_Gost28147_89_cbc);
- _hidden_Gost28147_89_cbc = NULL;
- }
- return _hidden_Gost28147_89_cbc;
-}
+#define TPL_VAL(st,field) ( \
+ ((st)->template ? (st)->template->field : 0) \
+)
-static EVP_CIPHER *_hidden_gost89_cnt = NULL;
-const EVP_CIPHER *cipher_gost_cpacnt(void)
+EVP_CIPHER *GOST_init_cipher(GOST_cipher *c)
{
- if (_hidden_gost89_cnt == NULL
- && ((_hidden_gost89_cnt =
- EVP_CIPHER_meth_new(NID_gost89_cnt, 1 /* block_size */ ,
- 32 /* key_size */ )) == NULL
- || !EVP_CIPHER_meth_set_iv_length(_hidden_gost89_cnt, 8)
- || !EVP_CIPHER_meth_set_flags(_hidden_gost89_cnt,
- EVP_CIPH_OFB_MODE |
- EVP_CIPH_NO_PADDING |
- EVP_CIPH_CUSTOM_IV |
- EVP_CIPH_RAND_KEY |
- EVP_CIPH_ALWAYS_CALL_INIT)
- || !EVP_CIPHER_meth_set_init(_hidden_gost89_cnt,
- gost_cipher_init_cpa)
- || !EVP_CIPHER_meth_set_do_cipher(_hidden_gost89_cnt,
- gost_cipher_do_cnt)
- || !EVP_CIPHER_meth_set_cleanup(_hidden_gost89_cnt,
- gost_cipher_cleanup)
- || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_gost89_cnt,
- sizeof(struct
- ossl_gost_cipher_ctx))
- || !EVP_CIPHER_meth_set_set_asn1_params(_hidden_gost89_cnt,
- gost89_set_asn1_parameters)
- || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_gost89_cnt,
- gost89_get_asn1_parameters)
- || !EVP_CIPHER_meth_set_ctrl(_hidden_gost89_cnt, gost_cipher_ctl))) {
- EVP_CIPHER_meth_free(_hidden_gost89_cnt);
- _hidden_gost89_cnt = NULL;
+ 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_CBC_MODE:
+ case EVP_CIPH_ECB_MODE:
+ case EVP_CIPH_WRAP_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);
}
- return _hidden_gost89_cnt;
-}
-static EVP_CIPHER *_hidden_gost89_cnt_12 = NULL;
-const EVP_CIPHER *cipher_gost_cpcnt_12(void)
-{
- if (_hidden_gost89_cnt_12 == NULL
- && ((_hidden_gost89_cnt_12 =
- EVP_CIPHER_meth_new(NID_gost89_cnt_12, 1 /* block_size */ ,
- 32 /* key_size */ )) == NULL
- || !EVP_CIPHER_meth_set_iv_length(_hidden_gost89_cnt_12, 8)
- || !EVP_CIPHER_meth_set_flags(_hidden_gost89_cnt_12,
- EVP_CIPH_OFB_MODE |
- EVP_CIPH_NO_PADDING |
- EVP_CIPH_CUSTOM_IV |
- EVP_CIPH_RAND_KEY |
- EVP_CIPH_ALWAYS_CALL_INIT)
- || !EVP_CIPHER_meth_set_init(_hidden_gost89_cnt_12,
- gost_cipher_init_cp_12)
- || !EVP_CIPHER_meth_set_do_cipher(_hidden_gost89_cnt_12,
- gost_cipher_do_cnt)
- || !EVP_CIPHER_meth_set_cleanup(_hidden_gost89_cnt_12,
- gost_cipher_cleanup)
- || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_gost89_cnt_12,
- sizeof(struct
- ossl_gost_cipher_ctx))
- || !EVP_CIPHER_meth_set_set_asn1_params(_hidden_gost89_cnt_12,
- gost89_set_asn1_parameters)
- || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_gost89_cnt_12,
- gost89_get_asn1_parameters)
- || !EVP_CIPHER_meth_set_ctrl(_hidden_gost89_cnt_12,
- gost_cipher_ctl))) {
- EVP_CIPHER_meth_free(_hidden_gost89_cnt_12);
- _hidden_gost89_cnt_12 = NULL;
+ 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, 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;
}
- return _hidden_gost89_cnt_12;
+ c->cipher = cipher;
+ return c->cipher;
}
-static EVP_CIPHER *_hidden_magma_ctr = NULL;
-const EVP_CIPHER *cipher_magma_ctr(void)
+void GOST_deinit_cipher(GOST_cipher *c)
{
- 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;
+ if (c->cipher) {
+ EVP_CIPHER_meth_free(c->cipher);
+ c->cipher = NULL;
}
- return _hidden_magma_ctr;
}
-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;
-}
+static GOST_cipher gost_template_cipher = {
+ .block_size = 8,
+ .key_len = 32,
+ .iv_len = 8,
+ .flags = EVP_CIPH_CUSTOM_IV |
+ EVP_CIPH_RAND_KEY |
+ EVP_CIPH_ALWAYS_CALL_INIT,
+ .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,
+};
-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 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,
+};
-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 Gost28147_89_cbc_cipher = {
+ .nid = NID_gost89_cbc,
+ .template = &gost_template_cipher,
+ .flags = EVP_CIPH_CBC_MODE,
+ .init = gost_cipher_init_cbc,
+ .do_cipher = gost_cipher_do_cbc,
+};
-void cipher_gost_destroy(void)
-{
- EVP_CIPHER_meth_free(_hidden_Gost28147_89_cipher);
- _hidden_Gost28147_89_cipher = NULL;
- EVP_CIPHER_meth_free(_hidden_gost89_cnt);
- _hidden_gost89_cnt = NULL;
- EVP_CIPHER_meth_free(_hidden_Gost28147_89_cbc);
- _hidden_Gost28147_89_cbc = NULL;
- EVP_CIPHER_meth_free(_hidden_gost89_cnt_12);
- _hidden_gost89_cnt_12 = NULL;
- EVP_CIPHER_meth_free(_hidden_magma_cbc);
- _hidden_magma_cbc = NULL;
- EVP_CIPHER_meth_free(_hidden_magma_ctr);
- _hidden_magma_ctr = NULL;
- EVP_CIPHER_meth_free(_hidden_magma_ctr_acpkm);
- _hidden_magma_ctr_acpkm = NULL;
- EVP_CIPHER_meth_free(_hidden_magma_ctr_acpkm_omac);
- _hidden_magma_ctr_acpkm_omac = NULL;
-}
+GOST_cipher Gost28147_89_cnt_cipher = {
+ .nid = NID_gost89_cnt,
+ .template = &gost_template_cipher,
+ .block_size = 1,
+ .flags = EVP_CIPH_OFB_MODE |
+ EVP_CIPH_NO_PADDING,
+ .init = gost_cipher_init_cpa,
+ .do_cipher = gost_cipher_do_cnt,
+};
+
+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_CUSTOM_IV |
+ EVP_CIPH_RAND_KEY |
+ EVP_CIPH_ALWAYS_CALL_INIT,
+ .cleanup = gost_cipher_cleanup,
+ .ctx_size = sizeof(struct ossl_gost_cipher_ctx),
+ .set_asn1_parameters = magma_set_asn1_parameters,
+ .get_asn1_parameters = magma_get_asn1_parameters,
+ .do_cipher = magma_cipher_do_ctr,
+ .ctrl = magma_cipher_ctl,
+};
+
+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,
+};
+
+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,
+};
+
+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,
+};
+
+ GOST_cipher magma_mgm_cipher = {
+ .nid = NID_magma_mgm,
+ .template = &magma_template_cipher,
+ .block_size = 1,
+ .iv_len = 8,
+ .flags = EVP_CIPH_NO_PADDING |
+ EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER |
+ EVP_CIPH_CTRL_INIT | EVP_CIPH_FLAG_AEAD_CIPHER,
+ .init = gost_magma_cipher_init_mgm,
+ .do_cipher = gost_magma_cipher_do_mgm,
+ .ctrl = gost_magma_mgm_ctrl,
+ .cleanup = gost_magma_mgm_cleanup,
+ .ctx_size = sizeof(gost_mgm_ctx)
+ };
+
+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 */
/* Control function, knows how to set MAC key.*/
static int gost_imit_ctrl(EVP_MD_CTX *ctx, int type, int arg, void *ptr);
-static EVP_MD *_hidden_Gost28147_89_MAC_md = NULL;
-static EVP_MD *_hidden_Gost28147_89_12_MAC_md = NULL;
-
-EVP_MD *imit_gost_cpa(void)
-{
- if (_hidden_Gost28147_89_MAC_md == NULL) {
- EVP_MD *md;
-
- if ((md = EVP_MD_meth_new(NID_id_Gost28147_89_MAC, NID_undef)) == NULL
- || !EVP_MD_meth_set_result_size(md, 4)
- || !EVP_MD_meth_set_input_blocksize(md, 8)
- || !EVP_MD_meth_set_app_datasize(md,
- sizeof(struct ossl_gost_imit_ctx))
- || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_XOF)
- || !EVP_MD_meth_set_init(md, gost_imit_init_cpa)
- || !EVP_MD_meth_set_update(md, gost_imit_update)
- || !EVP_MD_meth_set_final(md, gost_imit_final)
- || !EVP_MD_meth_set_copy(md, gost_imit_copy)
- || !EVP_MD_meth_set_cleanup(md, gost_imit_cleanup)
- || !EVP_MD_meth_set_ctrl(md, gost_imit_ctrl)) {
- EVP_MD_meth_free(md);
- md = NULL;
- }
- _hidden_Gost28147_89_MAC_md = md;
- }
- return _hidden_Gost28147_89_MAC_md;
-}
-
-void imit_gost_cpa_destroy(void)
-{
- EVP_MD_meth_free(_hidden_Gost28147_89_MAC_md);
- _hidden_Gost28147_89_MAC_md = NULL;
-}
-
-EVP_MD *imit_gost_cp_12(void)
-{
- if (_hidden_Gost28147_89_12_MAC_md == NULL) {
- EVP_MD *md;
-
- if ((md = EVP_MD_meth_new(NID_gost_mac_12, NID_undef)) == NULL
- || !EVP_MD_meth_set_result_size(md, 4)
- || !EVP_MD_meth_set_input_blocksize(md, 8)
- || !EVP_MD_meth_set_app_datasize(md,
- sizeof(struct ossl_gost_imit_ctx))
- || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_XOF)
- || !EVP_MD_meth_set_init(md, gost_imit_init_cp_12)
- || !EVP_MD_meth_set_update(md, gost_imit_update)
- || !EVP_MD_meth_set_final(md, gost_imit_final)
- || !EVP_MD_meth_set_copy(md, gost_imit_copy)
- || !EVP_MD_meth_set_cleanup(md, gost_imit_cleanup)
- || !EVP_MD_meth_set_ctrl(md, gost_imit_ctrl)) {
- EVP_MD_meth_free(md);
- md = NULL;
- }
- _hidden_Gost28147_89_12_MAC_md = md;
- }
- return _hidden_Gost28147_89_12_MAC_md;
-}
+GOST_digest Gost28147_89_MAC_digest = {
+ .nid = NID_id_Gost28147_89_MAC,
+ .result_size = 4,
+ .input_blocksize = 8,
+ .app_datasize = sizeof(struct ossl_gost_imit_ctx),
+ .flags = EVP_MD_FLAG_XOF,
+ .init = gost_imit_init_cpa,
+ .update = gost_imit_update,
+ .final = gost_imit_final,
+ .copy = gost_imit_copy,
+ .cleanup = gost_imit_cleanup,
+ .ctrl = gost_imit_ctrl,
+};
-void imit_gost_cp_12_destroy(void)
-{
- EVP_MD_meth_free(_hidden_Gost28147_89_12_MAC_md);
- _hidden_Gost28147_89_12_MAC_md = NULL;
-}
+GOST_digest Gost28147_89_mac_12_digest = {
+ .nid = NID_gost_mac_12,
+ .result_size = 4,
+ .input_blocksize = 8,
+ .app_datasize = sizeof(struct ossl_gost_imit_ctx),
+ .flags = EVP_MD_FLAG_XOF,
+ .init = gost_imit_init_cp_12,
+ .update = gost_imit_update,
+ .final = gost_imit_final,
+ .copy = gost_imit_copy,
+ .cleanup = gost_imit_cleanup,
+ .ctrl = gost_imit_ctrl,
+};
/*
* Correspondence between gost parameter OIDs and substitution blocks
* upon engine initialization
*/
-struct gost_cipher_info gost_cipher_list[] = {
+static struct gost_cipher_info gost_cipher_list[] = {
/*- NID *//*
* Subst block
*//*
if (nid == NID_undef) {
GOSTerr(GOST_F_GET_ENCRYPTION_PARAMS,
GOST_R_INVALID_CIPHER_PARAM_OID);
+ ERR_add_error_data(3, "Unsupported CRYPT_PARAMS='",
+ params, "' specified in environment or in config");
return NULL;
}
} else {
}
/* Initializes EVP_CIPHER_CTX with default values */
-int gost_cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+static int gost_cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
return gost_cipher_init_param(ctx, key, iv, enc, NID_undef,
}
/* Initializes EVP_CIPHER_CTX with default values */
-int gost_cipher_init_cbc(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+static int gost_cipher_init_cbc(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
return gost_cipher_init_param(ctx, key, iv, enc, NID_undef,
}
/* Initializes EVP_CIPHER_CTX with default values */
-int magma_cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+static int magma_cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
if (!gost_cipher_set_param(c, NID_id_tc26_gost_28147_param_Z))
return 0;
EVP_CIPHER_CTX_set_app_data(ctx, EVP_CIPHER_CTX_get_cipher_data(ctx));
+
+ if (enc) {
+ if (init_zero_kdf_seed(c->kdf_seed) == 0)
+ return -1;
+ }
}
+
if (key)
magma_key(&(c->cctx), key);
if (iv) {
}
/* Initializes EVP_CIPHER_CTX with default values */
-int magma_cipher_init_ctr_acpkm_omac(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+static int magma_cipher_init_ctr_acpkm_omac(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
if (key) {
struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
- unsigned char keys[64];
- const EVP_MD *md = EVP_get_digestbynid(NID_magma_mac);
- EVP_PKEY *mac_key;
-
- if (md == NULL)
- return 0;
+ unsigned char cipher_key[32];
+ c->omac_ctx = EVP_MD_CTX_new();
- if (enc) {
- if (RAND_bytes(c->kdf_seed, 8) != 1)
+ if (c->omac_ctx == NULL) {
+ GOSTerr(GOST_F_MAGMA_CIPHER_INIT_CTR_ACPKM_OMAC, ERR_R_MALLOC_FAILURE);
return 0;
}
- if (gost_kdftree2012_256(keys, 64, key, 32, (const unsigned char *)"kdf tree", 8, c->kdf_seed, 8, 1) <= 0)
- return 0;
+ if (gost2015_acpkm_omac_init(NID_magma_mac, enc, key,
+ c->omac_ctx, cipher_key, c->kdf_seed) != 1) {
+ EVP_MD_CTX_free(c->omac_ctx);
+ c->omac_ctx = NULL;
+ return 0;
+ }
- c->omac_ctx = EVP_MD_CTX_new();
- mac_key = EVP_PKEY_new_mac_key(NID_magma_mac, NULL, keys+32, 32);
+ return magma_cipher_init(ctx, cipher_key, iv, enc);
+ }
- if (mac_key == NULL || c->omac_ctx == NULL) {
- EVP_PKEY_free(mac_key);
- OPENSSL_cleanse(keys, sizeof(keys));
- return 0;
- }
+ return magma_cipher_init(ctx, key, iv, enc);
+}
+
+void gost_magma_encrypt_wrap(unsigned char *in, unsigned char *out,
+ struct ossl_gost_cipher_ctx *c) {
+ int i;
+ unsigned char b[8];
+ unsigned char d[8];
+ for (i = 0; i < 8; i++) {
+ b[7 - i] = in[i];
+ }
+ gostcrypt(&(c->cctx), b, d);
+ for (i = 0; i < 8; i++) {
+ out[7 - i] = d[i];
+ }
+}
+
+/* ----------------------------------------------------------------------------------------------- */
+/*! Функция реализует операцию умножения двух элементов конечного поля \f$ \mathbb F_{2^{64}}\f$,
+ порожденного неприводимым многочленом
+ \f$ f(x) = x^{64} + x^4 + x^3 + x + 1 \in \mathbb F_2[x]\f$. Для умножения используется
+ простейшая реализация, основанная на приведении по модулю после каждого шага алгоритма. */
+/* ----------------------------------------------------------------------------------------------- */
+static void gf64_mul (uint64_t *result, uint64_t *arg1, uint64_t *arg2)
+{
+ int i = 0;
+ register uint64_t t, X0;
+ uint64_t Z0 = 0;
+
+#ifdef L_ENDIAN
+ X0 = BSWAP64(*arg1);
+#else
+ X0 = *arg1;
+#endif
- if (EVP_DigestInit_ex(c->omac_ctx, md, NULL) <= 0 ||
- EVP_DigestSignInit(c->omac_ctx, NULL, md, NULL, mac_key) <= 0) {
- EVP_PKEY_free(mac_key);
- OPENSSL_cleanse(keys, sizeof(keys));
- return 0;
+#ifdef L_ENDIAN
+ t = BSWAP64(*(arg2));
+#else
+ t = *(arg2);
+#endif
+
+ for (i = 0; i < 63; i++) {
+ if (t & 0x1) {
+ Z0 ^= X0;
+ }
+ t >>= 1;
+ if (X0 & 0x8000000000000000) {
+ X0 <<= 1;
+ X0 ^= 0x1b;
}
- EVP_PKEY_free(mac_key);
- OPENSSL_cleanse(keys + 32, sizeof(keys) - 32);
+ else {
+ X0 <<= 1;
+ }
+ }
- return magma_cipher_init(ctx, keys, iv, enc);
+ if (t & 0x1) {
+ Z0 ^= X0;
}
- return magma_cipher_init(ctx, key, iv, enc);
+
+#ifdef L_ENDIAN
+ *(result) = BSWAP64(Z0);
+#else
+ *(result) = Z0;
+#endif
+}
+
+static int gost_magma_cipher_init_mgm(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
+{
+ gost_mgm_ctx *mctx =
+ (gost_mgm_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
+ int bl;
+
+ if (!iv && !key)
+ return 1;
+ if (key) {
+ bl = EVP_CIPHER_CTX_iv_length(ctx);
+ if (!gost_cipher_set_param(&mctx->ks.g_ks, NID_id_tc26_gost_28147_param_Z))
+ return 0;
+ magma_key(&(mctx->ks.g_ks.cctx), key);
+ gost_mgm128_init(&mctx->mgm, &mctx->ks,
+ (block128_f) gost_magma_encrypt_wrap, gf64_mul, bl);
+
+ /*
+ * If we have an iv can set it directly, otherwise use saved IV.
+ */
+ if (iv == NULL && mctx->iv_set)
+ iv = mctx->iv;
+ if (iv) {
+ if (gost_mgm128_setiv(&mctx->mgm, iv, mctx->ivlen) != 1)
+ return 0;
+ mctx->iv_set = 1;
+ }
+ mctx->key_set = 1;
+ } else {
+ /* If key set use IV, otherwise copy */
+ if (mctx->key_set) {
+ if (gost_mgm128_setiv(&mctx->mgm, iv, mctx->ivlen) != 1)
+ return 0;
+ }
+ else
+ memcpy(mctx->iv, iv, mctx->ivlen);
+ mctx->iv_set = 1;
+ }
+ return 1;
}
/*
}
/* GOST encryption in CBC mode */
-int gost_cipher_do_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out,
+static int gost_cipher_do_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t inl)
{
unsigned char b[8];
}
} else {
while (inl > 0) {
+ unsigned char tmpiv[8];
gostdecrypt(&(c->cctx), in_ptr, b);
+ memcpy(tmpiv, in_ptr, 8);
for (i = 0; i < 8; i++) {
out_ptr[i] = iv[i] ^ b[i];
}
- memcpy(iv, in_ptr, 8);
+ memcpy(iv, tmpiv, 8);
out_ptr += 8;
in_ptr += 8;
inl -= 8;
}
/* MAGMA encryption in CBC mode */
-int magma_cipher_do_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out,
+static int magma_cipher_do_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t inl)
{
unsigned char b[8];
d[7 - i] = in_ptr[i];
}
gostdecrypt(&(c->cctx), d, b);
+ memcpy(d, in_ptr, 8);
for (i = 0; i < 8; i++) {
out_ptr[i] = iv[i] ^ b[7 - i];
}
- memcpy(iv, in_ptr, 8);
+ memcpy(iv, d, 8);
out_ptr += 8;
in_ptr += 8;
inl -= 8;
inc_counter(counter, 8);
}
+#define MAGMA_BLOCK_SIZE 8
+#define MAGMA_BLOCK_MASK (MAGMA_BLOCK_SIZE - 1)
+static inline void apply_acpkm_magma(struct ossl_gost_cipher_ctx *
+ ctx, unsigned int *num)
+{
+ if (!ctx->key_meshing || (*num < ctx->key_meshing))
+ return;
+ acpkm_magma_key_meshing(&ctx->cctx);
+ *num &= MAGMA_BLOCK_MASK;
+}
+
/* MAGMA encryption in CTR mode */
static int magma_cipher_do_ctr(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t inl)
{
const unsigned char *in_ptr = in;
unsigned char *out_ptr = out;
- size_t i = 0;
size_t j;
struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
unsigned char *buf = EVP_CIPHER_CTX_buf_noconst(ctx);
unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx);
+ unsigned int num = EVP_CIPHER_CTX_num(ctx);
+ size_t blocks, i, lasted = inl;
unsigned char b[8];
/* Process partial blocks */
- if (EVP_CIPHER_CTX_num(ctx)) {
- for (j = EVP_CIPHER_CTX_num(ctx), i = 0; j < 8 && i < inl;
- j++, i++, in_ptr++, out_ptr++) {
- *out_ptr = buf[7 - j] ^ (*in_ptr);
- }
- if (j == 8) {
- EVP_CIPHER_CTX_set_num(ctx, 0);
- } else {
- EVP_CIPHER_CTX_set_num(ctx, j);
- return inl;
- }
+ while ((num & MAGMA_BLOCK_MASK) && lasted) {
+ *out_ptr++ = *in_ptr++ ^ buf[7 - (num & MAGMA_BLOCK_MASK)];
+ --lasted;
+ num++;
}
+ blocks = lasted / MAGMA_BLOCK_SIZE;
/* Process full blocks */
- for (; i + 8 <= inl; i += 8, in_ptr += 8, out_ptr += 8) {
+ for (i = 0; i < blocks; i++) {
+ apply_acpkm_magma(c, &num);
for (j = 0; j < 8; j++) {
b[7 - j] = iv[j];
}
out_ptr[j] = buf[7 - j] ^ in_ptr[j];
}
ctr64_inc(iv);
- c->count += 8;
- if (c->key_meshing && (c->count % c->key_meshing == 0))
- acpkm_magma_key_meshing(&(c->cctx));
+ c->count += MAGMA_BLOCK_SIZE;
+ in_ptr += MAGMA_BLOCK_SIZE;
+ out_ptr += MAGMA_BLOCK_SIZE;
+ num += MAGMA_BLOCK_SIZE;
+ lasted -= MAGMA_BLOCK_SIZE;
}
/* Process the rest of plaintext */
- if (i < inl) {
+ if (lasted > 0) {
+ apply_acpkm_magma(c, &num);
for (j = 0; j < 8; j++) {
b[7 - j] = iv[j];
}
gostcrypt(&(c->cctx), b, buf);
- for (j = 0; i < inl; j++, i++) {
- out_ptr[j] = buf[7 - j] ^ in_ptr[j];
- }
-
+ for (i = 0; i < lasted; i++)
+ out_ptr[i] = buf[7 - i] ^ in_ptr[i];
ctr64_inc(iv);
- c->count += 8;
- if (c->key_meshing && (c->count % c->key_meshing == 0))
- acpkm_magma_key_meshing(&(c->cctx));
-
- EVP_CIPHER_CTX_set_num(ctx, j);
- } else {
- EVP_CIPHER_CTX_set_num(ctx, 0);
+ c->count += j;
+ num += lasted;
}
+ EVP_CIPHER_CTX_set_num(ctx, num);
return inl;
}
if (in == NULL && inl == 0) /* Final call */
return gost2015_final_call(ctx, c->omac_ctx, MAGMA_MAC_MAX_SIZE, c->tag, magma_cipher_do_ctr);
+ if (in == NULL)
+ return -1;
+
/* As in and out can be the same pointer, process unencrypted here */
if (EVP_CIPHER_CTX_encrypting(ctx))
EVP_DigestSignUpdate(c->omac_ctx, in, inl);
return inl;
}
+
+static int gost_magma_cipher_do_mgm(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ gost_mgm_ctx *mctx =
+ (gost_mgm_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
+ int enc = EVP_CIPHER_CTX_encrypting(ctx);
+
+ /* If not set up, return error */
+ if (!mctx->key_set) {
+ GOSTerr(GOST_F_GOST_MAGMA_CIPHER_DO_MGM,
+ GOST_R_BAD_ORDER);
+ return -1;
+ }
+
+ if (!mctx->iv_set) {
+ GOSTerr(GOST_F_GOST_MAGMA_CIPHER_DO_MGM,
+ GOST_R_BAD_ORDER);
+ return -1;
+ }
+ if (in) {
+ if (out == NULL) {
+ if (gost_mgm128_aad(&mctx->mgm, in, len))
+ return -1;
+ } else if (enc) {
+ if (gost_mgm128_encrypt(&mctx->mgm, in, out, len))
+ return -1;
+ } else {
+ if (gost_mgm128_decrypt(&mctx->mgm, in, out, len))
+ return -1;
+ }
+ return len;
+ } else {
+ if (!enc) {
+ if (mctx->taglen < 0)
+ return -1;
+ if (gost_mgm128_finish(&mctx->mgm,
+ EVP_CIPHER_CTX_buf_noconst(ctx),
+ mctx->taglen) != 0)
+ return -1;
+ mctx->iv_set = 0;
+ return 0;
+ }
+ gost_mgm128_tag(&mctx->mgm, EVP_CIPHER_CTX_buf_noconst(ctx), 8);
+ mctx->taglen = 8;
+ /* Don't reuse the IV */
+ mctx->iv_set = 0;
+ return 0;
+ }
+
+}
+
/* GOST encryption in CFB mode */
-int gost_cipher_do_cfb(EVP_CIPHER_CTX *ctx, unsigned char *out,
+static int gost_cipher_do_cfb(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t inl)
{
const unsigned char *in_ptr = in;
}
}
- for (; i + 8 < inl; i += 8, in_ptr += 8, out_ptr += 8) {
+ for (; (inl - i) >= 8; i += 8, in_ptr += 8, out_ptr += 8) {
/*
* block cipher current iv
*/
}
}
- for (; i + 8 < inl; i += 8, in_ptr += 8, out_ptr += 8) {
+ for (; (inl - i) >= 8; i += 8, in_ptr += 8, out_ptr += 8) {
/*
* block cipher current iv
*/
}
/* Cleaning up of EVP_CIPHER_CTX */
-int gost_cipher_cleanup(EVP_CIPHER_CTX *ctx)
+static int gost_cipher_cleanup(EVP_CIPHER_CTX *ctx)
{
struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx);
EVP_MD_CTX_free(c->omac_ctx);
return 1;
}
+static int gost_magma_mgm_cleanup(EVP_CIPHER_CTX *c)
+{
+ gost_mgm_ctx *mctx =
+ (gost_mgm_ctx *)EVP_CIPHER_CTX_get_cipher_data(c);
+ if (mctx == NULL)
+ return 0;
+ gost_destroy(&mctx->ks.g_ks.cctx);
+ OPENSSL_cleanse(&mctx->mgm, sizeof(mctx->mgm));
+ EVP_CIPHER_CTX_set_app_data(c, NULL);
+ return 1;
+}
+
+static int gost_magma_mgm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
+{
+ gost_mgm_ctx *mctx =
+ (gost_mgm_ctx *)EVP_CIPHER_CTX_get_cipher_data(c);
+ unsigned char *buf, *iv;
+ int ivlen, enc;
+
+ switch (type) {
+ case EVP_CTRL_INIT:
+ ivlen = EVP_CIPHER_iv_length(EVP_CIPHER_CTX_cipher(c));
+ iv = EVP_CIPHER_CTX_iv_noconst(c);
+ mctx->key_set = 0;
+ mctx->iv_set = 0;
+ mctx->ivlen = ivlen;
+ mctx->iv = iv;
+ mctx->taglen = -1;
+ return 1;
+
+ case EVP_CTRL_GET_IVLEN:
+ *(int *)ptr = mctx->ivlen;
+ return 1;
+
+ case EVP_CTRL_AEAD_SET_IVLEN:
+ if (arg <= 0)
+ return 0;
+ if ((arg > EVP_MAX_IV_LENGTH) && (arg > mctx->ivlen)) {
+ // TODO: Allocate memory for IV or set error
+ return 0;
+ }
+ mctx->ivlen = arg;
+ return 1;
+
+ case EVP_CTRL_AEAD_SET_TAG:
+ buf = EVP_CIPHER_CTX_buf_noconst(c);
+ enc = EVP_CIPHER_CTX_encrypting(c);
+ if (arg <= 0 || arg != 8 || enc) {
+ GOSTerr(GOST_F_GOST_MAGMA_MGM_CTRL,
+ GOST_R_INVALID_TAG_LENGTH);
+ return 0;
+ }
+ memcpy(buf, ptr, arg);
+ mctx->taglen = arg;
+ return 1;
+
+ case EVP_CTRL_AEAD_GET_TAG:
+ buf = EVP_CIPHER_CTX_buf_noconst(c);
+ enc = EVP_CIPHER_CTX_encrypting(c);
+ if (arg <= 0 || arg > 8 || !enc || mctx->taglen < 0) {
+ GOSTerr(GOST_F_GOST_MAGMA_MGM_CTRL,
+ GOST_R_INVALID_TAG_LENGTH);
+ return 0;
+ }
+ memcpy(ptr, buf, arg);
+ return 1;
+
+ default:
+ return -1;
+ }
+}
+
/* Control function for gost cipher */
-int gost_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
+static int gost_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
{
switch (type) {
case EVP_CTRL_RAND_KEY:
}
/* Control function for gost cipher */
-int magma_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
+static int magma_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
{
switch (type) {
case EVP_CTRL_RAND_KEY:
if (RAND_priv_bytes
((unsigned char *)ptr, EVP_CIPHER_CTX_key_length(ctx)) <= 0) {
- GOSTerr(GOST_F_GOST_CIPHER_CTL, GOST_R_RNG_ERROR);
+ GOSTerr(GOST_F_MAGMA_CIPHER_CTL, GOST_R_RNG_ERROR);
return -1;
}
break;
}
/* Set cipher parameters from ASN1 structure */
-int gost89_set_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
+static int gost89_set_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
{
int len = 0;
unsigned char *buf = NULL;
}
/* Store parameters into ASN1 structure */
-int gost89_get_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
+static int gost89_get_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
{
int len;
GOST_CIPHER_PARAMS *gcp = NULL;
c->count = c->count % 1024 + 8;
}
-int gost_imit_update(EVP_MD_CTX *ctx, const void *data, size_t count)
+static int gost_imit_update(EVP_MD_CTX *ctx, const void *data, size_t count)
{
struct ossl_gost_imit_ctx *c = EVP_MD_CTX_md_data(ctx);
const unsigned char *p = data;
return 1;
}
-int gost_imit_final(EVP_MD_CTX *ctx, unsigned char *md)
+static int gost_imit_final(EVP_MD_CTX *ctx, unsigned char *md)
{
struct ossl_gost_imit_ctx *c = EVP_MD_CTX_md_data(ctx);
if (!c->key_set) {
return 1;
}
-int gost_imit_ctrl(EVP_MD_CTX *ctx, int type, int arg, void *ptr)
+static int gost_imit_ctrl(EVP_MD_CTX *ctx, int type, int arg, void *ptr)
{
switch (type) {
case EVP_MD_CTRL_KEY_LEN:
}
}
-int gost_imit_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from)
+static int gost_imit_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from)
{
if (EVP_MD_CTX_md_data(to) && EVP_MD_CTX_md_data(from)) {
memcpy(EVP_MD_CTX_md_data(to), EVP_MD_CTX_md_data(from),
}
/* Clean up imit ctx */
-int gost_imit_cleanup(EVP_MD_CTX *ctx)
+static int gost_imit_cleanup(EVP_MD_CTX *ctx)
{
memset(EVP_MD_CTX_md_data(ctx), 0, sizeof(struct ossl_gost_imit_ctx));
return 1;
}
+/* vim: set expandtab cinoptions=\:0,l1,t0,g0,(0 sw=4 : */