GRASSHOPPER_CIPHER_CTRACPKMOMAC,
};
-static EVP_CIPHER *gost_grasshopper_ciphers[7] = {
- NULL, NULL, NULL, NULL, NULL, NULL, NULL
-};
-
-static GRASSHOPPER_INLINE void
-gost_grasshopper_cipher_destroy_ctr(gost_grasshopper_cipher_ctx * c);
-
-struct GRASSHOPPER_CIPHER_PARAMS {
- int nid;
- grasshopper_init_cipher_func init_cipher;
- grasshopper_do_cipher_func do_cipher;
- grasshopper_destroy_cipher_func destroy_cipher;
- int block_size;
- int ctx_size;
- int iv_size;
- bool padding;
- int extra_flags;
-};
-
static GOST_cipher grasshopper_template_cipher = {
.block_size = GRASSHOPPER_BLOCK_SIZE,
.key_len = GRASSHOPPER_KEY_SIZE,
.flags = EVP_CIPH_RAND_KEY |
EVP_CIPH_ALWAYS_CALL_INIT,
- .do_cipher = gost_grasshopper_cipher_do,
.cleanup = gost_grasshopper_cipher_cleanup,
.ctx_size = sizeof(gost_grasshopper_cipher_ctx),
.set_asn1_parameters = gost_grasshopper_set_asn1_parameters,
.ctx_size = sizeof(gost_grasshopper_cipher_ctx_ctr),
};
-static struct GRASSHOPPER_CIPHER_PARAMS gost_cipher_params[7] = {
- {
- NID_grasshopper_ecb,
- gost_grasshopper_cipher_init_ecb,
- gost_grasshopper_cipher_do_ecb,
- NULL,
- 16,
- sizeof(gost_grasshopper_cipher_ctx),
- 0,
- true,
- 0
- },
- {
- NID_grasshopper_cbc,
- gost_grasshopper_cipher_init_cbc,
- gost_grasshopper_cipher_do_cbc,
- NULL,
- 16,
- sizeof(gost_grasshopper_cipher_ctx),
- 16,
- true,
- 0
- },
- {
- NID_grasshopper_ofb,
- gost_grasshopper_cipher_init_ofb,
- gost_grasshopper_cipher_do_ofb,
- NULL,
- 1,
- sizeof(gost_grasshopper_cipher_ctx),
- 16,
- false,
- 0
- },
- {
- NID_grasshopper_cfb,
- gost_grasshopper_cipher_init_cfb,
- gost_grasshopper_cipher_do_cfb,
- NULL,
- 1,
- sizeof(gost_grasshopper_cipher_ctx),
- 16,
- false,
- 0
- },
- {
- NID_grasshopper_ctr,
- gost_grasshopper_cipher_init_ctr,
- gost_grasshopper_cipher_do_ctr,
- gost_grasshopper_cipher_destroy_ctr,
- 1,
- sizeof(gost_grasshopper_cipher_ctx_ctr),
- 8,
- false,
- 0
- },
- {
- NID_kuznyechik_ctr_acpkm,
- gost_grasshopper_cipher_init_ctracpkm,
- gost_grasshopper_cipher_do_ctracpkm,
- gost_grasshopper_cipher_destroy_ctr,
- 1,
- sizeof(gost_grasshopper_cipher_ctx_ctr),
- 8,
- false,
- 0
- },
- {
- NID_kuznyechik_ctr_acpkm_omac,
- gost_grasshopper_cipher_init_ctracpkm_omac,
- gost_grasshopper_cipher_do_ctracpkm_omac,
- gost_grasshopper_cipher_destroy_ctr,
- 1,
- sizeof(gost_grasshopper_cipher_ctx_ctr),
- 8,
- false,
- EVP_CIPH_FLAG_CUSTOM_CIPHER|EVP_CIPH_FLAG_CIPHER_WITH_MAC|EVP_CIPH_CUSTOM_COPY
- },
-};
-
/* first 256 bit of D from draft-irtf-cfrg-re-keying-12 */
static const unsigned char ACPKM_D_2018[] = {
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, /* 64 bit */
return gost_grasshopper_cipher_init(ctx, key, iv, enc);
}
-GRASSHOPPER_INLINE int gost_grasshopper_cipher_do(EVP_CIPHER_CTX *ctx,
- unsigned char *out,
- const unsigned char *in,
- size_t inl)
-{
- gost_grasshopper_cipher_ctx *c =
- (gost_grasshopper_cipher_ctx *) EVP_CIPHER_CTX_get_cipher_data(ctx);
- struct GRASSHOPPER_CIPHER_PARAMS *params = &gost_cipher_params[c->type];
-
- return params->do_cipher(ctx, out, in, inl);
-}
-
int gost_grasshopper_cipher_do_ecb(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t inl)
{
int gost_grasshopper_cipher_cleanup(EVP_CIPHER_CTX *ctx)
{
- struct GRASSHOPPER_CIPHER_PARAMS *params;
gost_grasshopper_cipher_ctx *c =
(gost_grasshopper_cipher_ctx *) EVP_CIPHER_CTX_get_cipher_data(ctx);
if (!c)
return 1;
- params = &gost_cipher_params[c->type];
-
- gost_grasshopper_cipher_destroy(c);
- if (params->destroy_cipher != NULL) {
- params->destroy_cipher(c);
- }
+ if (EVP_CIPHER_CTX_mode(ctx) == EVP_CIPH_CTR_MODE)
+ gost_grasshopper_cipher_destroy_ctr(c);
EVP_CIPHER_CTX_set_app_data(ctx, NULL);
return 1;
}
-GRASSHOPPER_INLINE EVP_CIPHER *cipher_gost_grasshopper_create(int
- cipher_type, int
- block_size)
-{
- return EVP_CIPHER_meth_new(cipher_type, block_size /* block_size */ ,
- GRASSHOPPER_KEY_SIZE /* key_size */ );
-}
-
-const int cipher_gost_grasshopper_setup(EVP_CIPHER *cipher, uint8_t mode,
- int iv_size, bool padding, int extra_flags)
-{
- unsigned long flags = (unsigned long)(mode
- | ((!padding) ? EVP_CIPH_NO_PADDING : 0)
- | ((iv_size > 0) ? EVP_CIPH_CUSTOM_IV : 0)
- | EVP_CIPH_RAND_KEY | EVP_CIPH_ALWAYS_CALL_INIT
- | extra_flags);
-
- return EVP_CIPHER_meth_set_iv_length(cipher, iv_size)
- && EVP_CIPHER_meth_set_flags(cipher, flags)
- && EVP_CIPHER_meth_set_cleanup(cipher, gost_grasshopper_cipher_cleanup)
- && EVP_CIPHER_meth_set_set_asn1_params(cipher,
- gost_grasshopper_set_asn1_parameters)
- && EVP_CIPHER_meth_set_get_asn1_params(cipher,
- gost_grasshopper_get_asn1_parameters)
- && EVP_CIPHER_meth_set_ctrl(cipher, gost_grasshopper_cipher_ctl)
- && EVP_CIPHER_meth_set_do_cipher(cipher, gost_grasshopper_cipher_do);
-}
-
-const GRASSHOPPER_INLINE EVP_CIPHER *cipher_gost_grasshopper(uint8_t mode,
- uint8_t num)
-{
- EVP_CIPHER **cipher;
- struct GRASSHOPPER_CIPHER_PARAMS *params;
-
- cipher = &gost_grasshopper_ciphers[num];
-
- if (*cipher == NULL) {
- grasshopper_init_cipher_func init_cipher;
- int nid, block_size, ctx_size, iv_size, extra_flags;
- bool padding;
-
- params = &gost_cipher_params[num];
-
- nid = params->nid;
- init_cipher = params->init_cipher;
- block_size = params->block_size;
- ctx_size = params->ctx_size;
- iv_size = params->iv_size;
- padding = params->padding;
- extra_flags = params->extra_flags;
-
- *cipher = cipher_gost_grasshopper_create(nid, block_size);
- if (*cipher == NULL) {
- return NULL;
- }
-
- if (!cipher_gost_grasshopper_setup(*cipher, mode, iv_size, padding, extra_flags)
- || !EVP_CIPHER_meth_set_init(*cipher, init_cipher)
- || !EVP_CIPHER_meth_set_impl_ctx_size(*cipher, ctx_size)) {
- EVP_CIPHER_meth_free(*cipher);
- *cipher = NULL;
- }
- }
-
- return *cipher;
-}
-
-const GRASSHOPPER_INLINE EVP_CIPHER *cipher_gost_grasshopper_ecb()
-{
- return cipher_gost_grasshopper(EVP_CIPH_ECB_MODE, GRASSHOPPER_CIPHER_ECB);
-}
-
-const GRASSHOPPER_INLINE EVP_CIPHER *cipher_gost_grasshopper_cbc()
-{
- return cipher_gost_grasshopper(EVP_CIPH_CBC_MODE, GRASSHOPPER_CIPHER_CBC);
-}
-
-const GRASSHOPPER_INLINE EVP_CIPHER *cipher_gost_grasshopper_ofb()
-{
- return cipher_gost_grasshopper(EVP_CIPH_OFB_MODE, GRASSHOPPER_CIPHER_OFB);
-}
-
-const GRASSHOPPER_INLINE EVP_CIPHER *cipher_gost_grasshopper_cfb()
-{
- return cipher_gost_grasshopper(EVP_CIPH_CFB_MODE, GRASSHOPPER_CIPHER_CFB);
-}
-
-const GRASSHOPPER_INLINE EVP_CIPHER *cipher_gost_grasshopper_ctr()
-{
- return cipher_gost_grasshopper(EVP_CIPH_CTR_MODE, GRASSHOPPER_CIPHER_CTR);
-}
-
const GRASSHOPPER_INLINE EVP_CIPHER *cipher_gost_grasshopper_ctracpkm()
{
- return cipher_gost_grasshopper(EVP_CIPH_CTR_MODE,
- GRASSHOPPER_CIPHER_CTRACPKM);
-}
-
-const GRASSHOPPER_INLINE EVP_CIPHER *cipher_gost_grasshopper_ctracpkm_omac()
-{
- return cipher_gost_grasshopper(EVP_CIPH_CTR_MODE,
- GRASSHOPPER_CIPHER_CTRACPKMOMAC);
-}
-
-void cipher_gost_grasshopper_destroy(void)
-{
- EVP_CIPHER_meth_free(gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_ECB]);
- gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_ECB] = NULL;
- EVP_CIPHER_meth_free(gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_CBC]);
- gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_CBC] = NULL;
- EVP_CIPHER_meth_free(gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_OFB]);
- gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_OFB] = NULL;
- EVP_CIPHER_meth_free(gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_CFB]);
- gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_CFB] = NULL;
- EVP_CIPHER_meth_free(gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_CTR]);
- gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_CTR] = NULL;
- EVP_CIPHER_meth_free(gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_CTRACPKM]);
- gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_CTRACPKM] = NULL;
- EVP_CIPHER_meth_free(gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_CTRACPKMOMAC]);
- gost_grasshopper_ciphers[GRASSHOPPER_CIPHER_CTRACPKMOMAC] = NULL;
+ return GOST_init_cipher(&grasshopper_ctr_acpkm_cipher);
}
/* vim: set expandtab cinoptions=\:0,l1,t0,g0,(0 sw=4 : */
projects / openssl-gost / engine.git / commitdiff