X-Git-Url: http://wagner.pp.ru/gitweb/?a=blobdiff_plain;f=gost_crypt.c;h=8f8e0d382ff05bd340f504b34e29f5a49830454b;hb=34dbff392d06471bd4d57395ad16b770e505e2a3;hp=4e22145a46d27097ec4aa44d98b7a5e0c9c9cff4;hpb=0906436e33bdd8dabf07d494e3d6d5184cc02246;p=openssl-gost%2Fengine.git diff --git a/gost_crypt.c b/gost_crypt.c index 4e22145..8f8e0d3 100644 --- a/gost_crypt.c +++ b/gost_crypt.c @@ -1,6 +1,8 @@ /********************************************************************** - * gost_crypt.c * + * gost_crypt.c - Initialize all ciphers * + * * * Copyright (c) 2005-2006 Cryptocom LTD * + * Copyright (c) 2020 Chikunov Vitaly * * This file is distributed under the same license as OpenSSL * * * * OpenSSL interface to GOST 28147-89 cipher functions * @@ -12,6 +14,7 @@ #include #include "e_gost_err.h" #include "gost_lcl.h" +#include "gost_gost2015.h" #if !defined(CCGOST_DEBUG) && !defined(DEBUG) # ifndef NDEBUG @@ -48,232 +51,196 @@ static int gost_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr); static int magma_cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key, 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); /* 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(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl); -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; -} +static int magma_cipher_do_ctr_acpkm_omac(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t inl); -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; -} +/* 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 EVP_CIPHER *_hidden_gost89_cnt = NULL; -const EVP_CIPHER *cipher_gost_cpacnt(void) -{ - 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; - } - return _hidden_gost89_cnt; -} +/* + * Single level template accessor. + * Note: that you cannot template 0 value. + */ +#define TPL(st,field) ( \ + ((st)->field) ? ((st)->field) : TPL_VAL(st,field) \ +) -static EVP_CIPHER *_hidden_gost89_cnt_12 = NULL; -const EVP_CIPHER *cipher_gost_cpcnt_12(void) +#define TPL_VAL(st,field) ( \ + ((st)->template ? (st)->template->field : 0) \ +) + +EVP_CIPHER *GOST_init_cipher(GOST_cipher *c) { - 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 (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)); } - return _hidden_gost89_cnt_12; -} -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, 8) - || !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, - gost89_set_asn1_parameters) - || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_magma_ctr, - gost89_get_asn1_parameters) - || !EVP_CIPHER_meth_set_ctrl(_hidden_magma_ctr, gost_cipher_ctl))) { - EVP_CIPHER_meth_free(_hidden_magma_ctr); - _hidden_magma_ctr = 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_magma_ctr; + c->cipher = cipher; + return c->cipher; } -static EVP_CIPHER *_hidden_magma_cbc = NULL; -const EVP_CIPHER *cipher_magma_cbc(void) +void GOST_deinit_cipher(GOST_cipher *c) { - 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_set_asn1_params(_hidden_magma_cbc, - gost89_set_asn1_parameters) - || !EVP_CIPHER_meth_set_get_asn1_params(_hidden_magma_cbc, - gost89_get_asn1_parameters) - || !EVP_CIPHER_meth_set_ctrl(_hidden_magma_cbc, gost_cipher_ctl))) { - EVP_CIPHER_meth_free(_hidden_magma_cbc); - _hidden_magma_cbc = NULL; + if (c->cipher) { + EVP_CIPHER_meth_free(c->cipher); + c->cipher = NULL; } - return _hidden_magma_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; -} +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, +}; + +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, + .template = &gost_template_cipher, + .flags = EVP_CIPH_CBC_MODE, + .init = gost_cipher_init_cbc, + .do_cipher = gost_cipher_do_cbc, +}; + +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_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 */ @@ -289,70 +256,33 @@ static int gost_imit_cleanup(EVP_MD_CTX *ctx); /* 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 @@ -360,7 +290,7 @@ void imit_gost_cp_12_destroy(void) * upon engine initialization */ -struct gost_cipher_info gost_cipher_list[] = { +static struct gost_cipher_info gost_cipher_list[] = { /*- NID *//* * Subst block *//* @@ -406,6 +336,8 @@ const struct gost_cipher_info *get_encryption_params(ASN1_OBJECT *obj) 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 { @@ -458,28 +390,6 @@ static int gost_cipher_init_param(EVP_CIPHER_CTX *ctx, return 1; } -static int magma_cipher_init_param(EVP_CIPHER_CTX *ctx, - const unsigned char *key, - const unsigned char *iv, int enc, - int paramNID, int mode) -{ - struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx); - if (EVP_CIPHER_CTX_get_app_data(ctx) == NULL) { - 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 (key) - magma_key(&(c->cctx), key); - if (iv) { - memcpy((unsigned char *)EVP_CIPHER_CTX_original_iv(ctx), iv, - EVP_CIPHER_CTX_iv_length(ctx)); - } - memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), - EVP_CIPHER_CTX_original_iv(ctx), EVP_CIPHER_CTX_iv_length(ctx)); - return 1; -} - static int gost_cipher_init_cnt(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, @@ -514,7 +424,7 @@ static int gost_cipher_init_cp_12(EVP_CIPHER_CTX *ctx, } /* 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, @@ -522,7 +432,7 @@ int gost_cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key, } /* 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, @@ -530,11 +440,68 @@ int gost_cipher_init_cbc(EVP_CIPHER_CTX *ctx, const unsigned char *key, } /* 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); + /* FIXME this is just initializtion check */ + if (EVP_CIPHER_CTX_get_app_data(ctx) == NULL) { + 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); + magma_master_key(&(c->cctx), key); + } + if (iv) { + memcpy((unsigned char *)EVP_CIPHER_CTX_original_iv(ctx), iv, + EVP_CIPHER_CTX_iv_length(ctx)); + } + memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), + EVP_CIPHER_CTX_original_iv(ctx), EVP_CIPHER_CTX_iv_length(ctx)); + + if (EVP_CIPHER_CTX_nid(ctx) == NID_magma_ctr_acpkm + || EVP_CIPHER_CTX_nid(ctx) == NID_magma_ctr_acpkm_omac) { + c->key_meshing = 1024; + } else { + c->key_meshing = 0; + } + + return 1; +} + +/* Initializes EVP_CIPHER_CTX with default values */ +static int magma_cipher_init_ctr_acpkm_omac(EVP_CIPHER_CTX *ctx, const unsigned char *key, const unsigned char *iv, int enc) { - return magma_cipher_init_param(ctx, key, iv, enc, NID_undef, - EVP_CIPH_CBC_MODE); + if (key) { + struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx); + unsigned char cipher_key[32]; + c->omac_ctx = EVP_MD_CTX_new(); + + if (c->omac_ctx == NULL) { + GOSTerr(GOST_F_MAGMA_CIPHER_INIT_CTR_ACPKM_OMAC, ERR_R_MALLOC_FAILURE); + 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; + } + + return magma_cipher_init(ctx, cipher_key, iv, enc); + } + + return magma_cipher_init(ctx, key, iv, enc); } /* @@ -587,7 +554,7 @@ static void gost_cnt_next(void *ctx, unsigned char *iv, unsigned char *buf) } /* 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]; @@ -610,11 +577,13 @@ int gost_cipher_do_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out, } } 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; @@ -624,7 +593,7 @@ int gost_cipher_do_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out, } /* 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]; @@ -656,10 +625,11 @@ int magma_cipher_do_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out, 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; @@ -674,34 +644,41 @@ static void ctr64_inc(unsigned char *counter) 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 < (unsigned int)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 1; - } + 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]; } @@ -710,29 +687,59 @@ static int magma_cipher_do_ctr(EVP_CIPHER_CTX *ctx, unsigned char *out, out_ptr[j] = buf[7 - j] ^ in_ptr[j]; } ctr64_inc(iv); + 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), iv, buf); - ctr64_inc(iv); - for (j = 0; i < inl; j++, i++) { - out_ptr[j] = buf[7 - j] ^ in_ptr[j]; - } + gostcrypt(&(c->cctx), b, buf); - EVP_CIPHER_CTX_set_num(ctx, j); - } else { - EVP_CIPHER_CTX_set_num(ctx, 0); + for (i = 0; i < lasted; i++) + out_ptr[i] = buf[7 - i] ^ in_ptr[i]; + ctr64_inc(iv); + c->count += j; + num += lasted; } + EVP_CIPHER_CTX_set_num(ctx, num); - return 1; + return inl; } +/* MAGMA encryption in CTR mode */ +static int magma_cipher_do_ctr_acpkm_omac(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t inl) +{ + struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx); + + 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); + + if (magma_cipher_do_ctr(ctx, out, in, inl) != inl) + return -1; + + /* As in and out can be the same pointer, process decrypted here */ + if (!EVP_CIPHER_CTX_encrypting(ctx)) + EVP_DigestSignUpdate(c->omac_ctx, out, inl); + + return inl; +} /* 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; @@ -760,7 +767,7 @@ int gost_cipher_do_cfb(EVP_CIPHER_CTX *ctx, unsigned char *out, } } - 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 */ @@ -821,7 +828,7 @@ static int gost_cipher_do_cnt(EVP_CIPHER_CTX *ctx, unsigned char *out, } } - 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 */ @@ -851,29 +858,19 @@ static int gost_cipher_do_cnt(EVP_CIPHER_CTX *ctx, unsigned char *out, } /* Cleaning up of EVP_CIPHER_CTX */ -int gost_cipher_cleanup(EVP_CIPHER_CTX *ctx) +static int gost_cipher_cleanup(EVP_CIPHER_CTX *ctx) { - gost_destroy(&((struct ossl_gost_cipher_ctx *) - EVP_CIPHER_CTX_get_cipher_data(ctx))->cctx); + struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx); + EVP_MD_CTX_free(c->omac_ctx); + gost_destroy(&(c->cctx)); EVP_CIPHER_CTX_set_app_data(ctx, NULL); 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) { -#if 0 - case EVP_CTRL_INIT: - { - struct ossl_gost_cipher_ctx *c = - EVP_CIPHER_CTX_get_cipher_data(ctx); - if (c == NULL) { - return -1; - } - return gost_cipher_set_param(c, arg); - } -#endif case EVP_CTRL_RAND_KEY: { if (RAND_priv_bytes @@ -953,8 +950,141 @@ int gost_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr) return 1; } +/* Decrement 8-byte sequence if needed */ +int decrement_sequence(unsigned char *seq, int decrement) { + if (decrement < 0 || decrement > 1) + return 0; + + int j; + if (decrement) { + for (j = 7; j >= 0; j--) + { + if (seq[j] != 0) + { + seq[j]--; + break; + } + else + seq[j] = 0xFF; + } + } + return 1; +} + +/* Control function for gost cipher */ +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); + return -1; + } + break; + case EVP_CTRL_KEY_MESH: + { + struct ossl_gost_cipher_ctx *c = + EVP_CIPHER_CTX_get_cipher_data(ctx); + + if (c == NULL) { + return -1; + } + + if (c->count != 0) { + return -1; + } + + c->key_meshing = arg; + return 1; + } + case EVP_CTRL_TLSTREE: + { + unsigned char newkey[32]; + int mode = EVP_CIPHER_CTX_mode(ctx); + struct ossl_gost_cipher_ctx *ctr_ctx = NULL; + gost_ctx *c = NULL; + + unsigned char adjusted_iv[8]; + unsigned char seq[8]; + int j, carry, decrement_arg; + if (mode != EVP_CIPH_CTR_MODE) + return -1; + + ctr_ctx = (struct ossl_gost_cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx); + c = &(ctr_ctx->cctx); + + /* + * 'arg' parameter indicates what we should do with sequence value. + * + * When function called, seq is incremented after MAC calculation. + * In ETM mode, we use seq 'as is' in the ctrl-function (arg = 0) + * Otherwise we have to decrease it in the implementation (arg = 1). + */ + memcpy(seq, ptr, 8); + decrement_arg = arg; + if(!decrement_sequence(seq, decrement_arg)) { + GOSTerr(GOST_F_MAGMA_CIPHER_CTL, GOST_R_CTRL_CALL_FAILED); + return -1; + } + + if (gost_tlstree(NID_magma_cbc, (const unsigned char *)c->master_key, newkey, + (const unsigned char *)seq) > 0) { + memset(adjusted_iv, 0, 8); + memcpy(adjusted_iv, EVP_CIPHER_CTX_original_iv(ctx), 4); + for (j = 3, carry = 0; j >= 0; j--) + { + int adj_byte = adjusted_iv[j] + seq[j+4] + carry; + carry = (adj_byte > 255) ? 1 : 0; + adjusted_iv[j] = adj_byte & 0xFF; + } + EVP_CIPHER_CTX_set_num(ctx, 0); + memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), adjusted_iv, 8); + + magma_key(c, newkey); + return 1; + } + } + return -1; + default: + GOSTerr(GOST_F_MAGMA_CIPHER_CTL, GOST_R_UNSUPPORTED_CIPHER_CTL_COMMAND); + return -1; + } + return 1; +} + +static int magma_cipher_ctl_acpkm_omac(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr) +{ + switch (type) + { + case EVP_CTRL_PROCESS_UNPROTECTED: + { + struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx); + STACK_OF(X509_ATTRIBUTE) *x = ptr; + return gost2015_process_unprotected_attributes(x, arg, MAGMA_MAC_MAX_SIZE, c->tag); + } + case EVP_CTRL_COPY: { + EVP_CIPHER_CTX *out = ptr; + struct ossl_gost_cipher_ctx *in_cctx = EVP_CIPHER_CTX_get_cipher_data(ctx); + struct ossl_gost_cipher_ctx *out_cctx = EVP_CIPHER_CTX_get_cipher_data(out); + + if (in_cctx->omac_ctx == out_cctx->omac_ctx) { + out_cctx->omac_ctx = EVP_MD_CTX_new(); + if (out_cctx->omac_ctx == NULL) { + GOSTerr(GOST_F_MAGMA_CIPHER_CTL_ACPKM_OMAC, ERR_R_MALLOC_FAILURE); + return -1; + } + } + return EVP_MD_CTX_copy(out_cctx->omac_ctx, in_cctx->omac_ctx); + } + default: + return magma_cipher_ctl(ctx, type, arg, ptr); + 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; @@ -999,7 +1129,7 @@ int gost89_set_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params) } /* 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; @@ -1044,6 +1174,34 @@ int gost89_get_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params) return 1; } +#define MAGMA_UKM_LEN 12 +static int magma_set_asn1_parameters (EVP_CIPHER_CTX *ctx, ASN1_TYPE *params) +{ + struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx); + c->key_meshing = 8192; + + return gost2015_set_asn1_params(params, EVP_CIPHER_CTX_original_iv(ctx), 4, + c->kdf_seed); +} + +static int magma_get_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params) +{ + struct ossl_gost_cipher_ctx *c = EVP_CIPHER_CTX_get_cipher_data(ctx); + unsigned char iv[16]; + + c->key_meshing = 8192; + + if (gost2015_get_asn1_params(params, MAGMA_UKM_LEN, iv, 4, c->kdf_seed) < 0) + return -1; + + memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, sizeof(iv)); + memcpy((unsigned char *)EVP_CIPHER_CTX_original_iv(ctx), iv, sizeof(iv)); + /* Key meshing 8 kb*/ + c->key_meshing = 8192; + + return 1; +} + static int gost_imit_init(EVP_MD_CTX *ctx, gost_subst_block * block) { struct ossl_gost_imit_ctx *c = EVP_MD_CTX_md_data(ctx); @@ -1083,7 +1241,7 @@ static void mac_block_mesh(struct ossl_gost_imit_ctx *c, 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; @@ -1116,7 +1274,7 @@ int gost_imit_update(EVP_MD_CTX *ctx, const void *data, size_t count) 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) { @@ -1139,7 +1297,7 @@ int gost_imit_final(EVP_MD_CTX *ctx, unsigned char *md) 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: @@ -1195,7 +1353,7 @@ int gost_imit_ctrl(EVP_MD_CTX *ctx, int type, int arg, void *ptr) } } -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), @@ -1205,8 +1363,9 @@ int gost_imit_copy(EVP_MD_CTX *to, const EVP_MD_CTX *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 : */