From a00d42f4dfec8dff2f290cf3074dc25fb6b2e985 Mon Sep 17 00:00:00 2001 From: Vitaly Chikunov Date: Tue, 12 May 2020 03:55:39 +0300 Subject: [PATCH] gost_crypt: Allow templates in GOST_cipher Avoid duplication of struct values with help of 1-level templates. --- gost_crypt.c | 152 ++++++++++++++++++++------------------------------- gost_lcl.h | 1 + 2 files changed, 61 insertions(+), 92 deletions(-) diff --git a/gost_crypt.c b/gost_crypt.c index 5f7e029..8a2b960 100644 --- a/gost_crypt.c +++ b/gost_crypt.c @@ -69,22 +69,34 @@ 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; 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, TPL(c, block_size), TPL(c, key_len))) + || !EVP_CIPHER_meth_set_iv_length(cipher, TPL(c, iv_len)) + || !EVP_CIPHER_meth_set_flags(cipher, c->flags | TPL_VAL(c, 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 +112,13 @@ 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, @@ -119,139 +126,100 @@ 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, }; GOST_cipher magma_ctr_cipher = { .nid = NID_magma_ctr, + .template = &magma_template_cipher, .block_size = 1, - .key_len = 32, .iv_len = 4, .flags = EVP_CIPH_CTR_MODE | - EVP_CIPH_NO_PADDING | - EVP_CIPH_CUSTOM_IV | - EVP_CIPH_RAND_KEY | - EVP_CIPH_ALWAYS_CALL_INIT, + EVP_CIPH_NO_PADDING, .init = magma_cipher_init, - .do_cipher = magma_cipher_do_ctr, - .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 = magma_cipher_ctl, }; GOST_cipher magma_ctr_acpkm_cipher = { .nid = NID_magma_ctr_acpkm, + .template = &magma_template_cipher, .block_size = 1, - .key_len = 32, .iv_len = 4, .flags = EVP_CIPH_CTR_MODE | - EVP_CIPH_NO_PADDING | - EVP_CIPH_CUSTOM_IV | - EVP_CIPH_RAND_KEY | - EVP_CIPH_ALWAYS_CALL_INIT, + EVP_CIPH_NO_PADDING, .init = magma_cipher_init, - .do_cipher = magma_cipher_do_ctr, - .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 = magma_cipher_ctl, }; GOST_cipher magma_ctr_acpkm_omac_cipher = { .nid = NID_magma_ctr_acpkm_omac, + .template = &magma_template_cipher, .block_size = 1, - .key_len = 32, .iv_len = 4, .flags = 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, .init = magma_cipher_init_ctr_acpkm_omac, .do_cipher = magma_cipher_do_ctr_acpkm_omac, - .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 = magma_cipher_ctl_acpkm_omac, }; GOST_cipher magma_cbc_cipher = { .nid = NID_magma_cbc, - .block_size = 8, - .key_len = 32, - .iv_len = 8, - .flags = EVP_CIPH_CBC_MODE | - EVP_CIPH_NO_PADDING | - EVP_CIPH_CUSTOM_IV | - EVP_CIPH_RAND_KEY | - EVP_CIPH_ALWAYS_CALL_INIT, + .template = &gost_template_cipher, + .flags = EVP_CIPH_CBC_MODE, .init = magma_cipher_init, .do_cipher = magma_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 = magma_cipher_ctl, }; /* Implementation of GOST 28147-89 in MAC (imitovstavka) mode */ diff --git a/gost_lcl.h b/gost_lcl.h index e926d9a..a9cb8b0 100644 --- a/gost_lcl.h +++ b/gost_lcl.h @@ -320,6 +320,7 @@ BIGNUM *gost_get0_priv_key(const EVP_PKEY *pkey); /* Struct describing cipher and used for init/deinit.*/ struct gost_cipher_st { + struct gost_cipher_st *template; /* template struct */ int nid; EVP_CIPHER *cipher; int block_size; /* (bytes) */ -- 2.39.5