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-rw-r--r--engines/ccgost/gost_crypt.c1111
1 files changed, 550 insertions, 561 deletions
diff --git a/engines/ccgost/gost_crypt.c b/engines/ccgost/gost_crypt.c
index 52aef15acf4b..aae941e54b9e 100644
--- a/engines/ccgost/gost_crypt.c
+++ b/engines/ccgost/gost_crypt.c
@@ -19,59 +19,57 @@
#endif
#include <assert.h>
-static int gost_cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
- const unsigned char *iv, int enc);
-static int gost_cipher_init_cpa(EVP_CIPHER_CTX *ctx, const unsigned char *key,
- const unsigned char *iv, int enc);
-/* Handles block of data in CFB mode */
-static int gost_cipher_do_cfb(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, size_t inl);
-/* Handles block of data in CNT mode */
-static int gost_cipher_do_cnt(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, size_t inl);
-/* Cleanup function */
+static int gost_cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc);
+static int gost_cipher_init_cpa(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc);
+/* Handles block of data in CFB mode */
+static int gost_cipher_do_cfb(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl);
+/* Handles block of data in CNT mode */
+static int gost_cipher_do_cnt(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl);
+/* Cleanup function */
static int gost_cipher_cleanup(EVP_CIPHER_CTX *);
/* 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);
+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);
/* Control function */
-static int gost_cipher_ctl(EVP_CIPHER_CTX *ctx,int type,int arg,void *ptr);
-
-EVP_CIPHER cipher_gost =
- {
- NID_id_Gost28147_89,
- 1,/*block_size*/
- 32,/*key_size*/
- 8,/*iv_len */
- EVP_CIPH_CFB_MODE| EVP_CIPH_NO_PADDING |
- EVP_CIPH_CUSTOM_IV| EVP_CIPH_RAND_KEY | EVP_CIPH_ALWAYS_CALL_INIT,
- gost_cipher_init,
- gost_cipher_do_cfb,
- gost_cipher_cleanup,
- sizeof(struct ossl_gost_cipher_ctx),/* ctx_size */
- gost89_set_asn1_parameters,
- gost89_get_asn1_parameters,
- gost_cipher_ctl,
- NULL,
- };
-
-EVP_CIPHER cipher_gost_cpacnt =
- {
- NID_gost89_cnt,
- 1,/*block_size*/
- 32,/*key_size*/
- 8,/*iv_len */
- EVP_CIPH_OFB_MODE| EVP_CIPH_NO_PADDING |
- EVP_CIPH_CUSTOM_IV| EVP_CIPH_RAND_KEY | EVP_CIPH_ALWAYS_CALL_INIT,
- gost_cipher_init_cpa,
- gost_cipher_do_cnt,
- gost_cipher_cleanup,
- sizeof(struct ossl_gost_cipher_ctx), /* ctx_size */
- gost89_set_asn1_parameters,
- gost89_get_asn1_parameters,
- gost_cipher_ctl,
- NULL,
- };
+static int gost_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr);
+
+EVP_CIPHER cipher_gost = {
+ NID_id_Gost28147_89,
+ 1, /* block_size */
+ 32, /* key_size */
+ 8, /* iv_len */
+ EVP_CIPH_CFB_MODE | EVP_CIPH_NO_PADDING |
+ EVP_CIPH_CUSTOM_IV | EVP_CIPH_RAND_KEY | EVP_CIPH_ALWAYS_CALL_INIT,
+ gost_cipher_init,
+ gost_cipher_do_cfb,
+ gost_cipher_cleanup,
+ sizeof(struct ossl_gost_cipher_ctx), /* ctx_size */
+ gost89_set_asn1_parameters,
+ gost89_get_asn1_parameters,
+ gost_cipher_ctl,
+ NULL,
+};
+
+EVP_CIPHER cipher_gost_cpacnt = {
+ NID_gost89_cnt,
+ 1, /* block_size */
+ 32, /* key_size */
+ 8, /* iv_len */
+ EVP_CIPH_OFB_MODE | EVP_CIPH_NO_PADDING |
+ EVP_CIPH_CUSTOM_IV | EVP_CIPH_RAND_KEY | EVP_CIPH_ALWAYS_CALL_INIT,
+ gost_cipher_init_cpa,
+ gost_cipher_do_cnt,
+ gost_cipher_cleanup,
+ sizeof(struct ossl_gost_cipher_ctx), /* ctx_size */
+ gost89_set_asn1_parameters,
+ gost89_get_asn1_parameters,
+ gost_cipher_ctl,
+ NULL,
+};
/* Implementation of GOST 28147-89 in MAC (imitovstavka) mode */
/* Init functions which set specific parameters */
@@ -79,556 +77,547 @@ static int gost_imit_init_cpa(EVP_MD_CTX *ctx);
/* process block of data */
static int gost_imit_update(EVP_MD_CTX *ctx, const void *data, size_t count);
/* Return computed value */
-static int gost_imit_final(EVP_MD_CTX *ctx,unsigned char *md);
+static int gost_imit_final(EVP_MD_CTX *ctx, unsigned char *md);
/* Copies context */
-static 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);
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);
-
-EVP_MD imit_gost_cpa =
- {
- NID_id_Gost28147_89_MAC,
- NID_undef,
- 4,
- 0,
- gost_imit_init_cpa,
- gost_imit_update,
- gost_imit_final,
- gost_imit_copy,
- gost_imit_cleanup,
- NULL,
- NULL,
- {0,0,0,0,0},
- 8,
- sizeof(struct ossl_gost_imit_ctx),
- gost_imit_ctrl
- };
-
-/*
+static int gost_imit_ctrl(EVP_MD_CTX *ctx, int type, int arg, void *ptr);
+
+EVP_MD imit_gost_cpa = {
+ NID_id_Gost28147_89_MAC,
+ NID_undef,
+ 4,
+ 0,
+ gost_imit_init_cpa,
+ gost_imit_update,
+ gost_imit_final,
+ gost_imit_copy,
+ gost_imit_cleanup,
+ NULL,
+ NULL,
+ {0, 0, 0, 0, 0},
+ 8,
+ sizeof(struct ossl_gost_imit_ctx),
+ gost_imit_ctrl
+};
+
+/*
* Correspondence between gost parameter OIDs and substitution blocks
* NID field is filed by register_gost_NID function in engine.c
* upon engine initialization
*/
-struct gost_cipher_info gost_cipher_list[]=
- {
-/* NID */ /* Subst block */ /* Key meshing*/
-/*{NID_id_GostR3411_94_CryptoProParamSet,&GostR3411_94_CryptoProParamSet,0},*/
- {NID_id_Gost28147_89_cc,&GostR3411_94_CryptoProParamSet,0},
- {NID_id_Gost28147_89_CryptoPro_A_ParamSet,&Gost28147_CryptoProParamSetA,1},
- {NID_id_Gost28147_89_CryptoPro_B_ParamSet,&Gost28147_CryptoProParamSetB,1},
- {NID_id_Gost28147_89_CryptoPro_C_ParamSet,&Gost28147_CryptoProParamSetC,1},
- {NID_id_Gost28147_89_CryptoPro_D_ParamSet,&Gost28147_CryptoProParamSetD,1},
- {NID_id_Gost28147_89_TestParamSet,&Gost28147_TestParamSet,1},
- {NID_undef,NULL,0}
- };
-
-/* get encryption parameters from crypto network settings
- FIXME For now we use environment var CRYPT_PARAMS as place to
- store these settings. Actually, it is better to use engine control command, read from configuration file to set them */
+struct gost_cipher_info gost_cipher_list[] = {
+ /*- NID *//*
+ * Subst block
+ *//*
+ * Key meshing
+ */
+ /*
+ * {NID_id_GostR3411_94_CryptoProParamSet,&GostR3411_94_CryptoProParamSet,0},
+ */
+ {NID_id_Gost28147_89_cc, &GostR3411_94_CryptoProParamSet, 0},
+ {NID_id_Gost28147_89_CryptoPro_A_ParamSet, &Gost28147_CryptoProParamSetA,
+ 1},
+ {NID_id_Gost28147_89_CryptoPro_B_ParamSet, &Gost28147_CryptoProParamSetB,
+ 1},
+ {NID_id_Gost28147_89_CryptoPro_C_ParamSet, &Gost28147_CryptoProParamSetC,
+ 1},
+ {NID_id_Gost28147_89_CryptoPro_D_ParamSet, &Gost28147_CryptoProParamSetD,
+ 1},
+ {NID_id_Gost28147_89_TestParamSet, &Gost28147_TestParamSet, 1},
+ {NID_undef, NULL, 0}
+};
+
+/*
+ * get encryption parameters from crypto network settings FIXME For now we
+ * use environment var CRYPT_PARAMS as place to store these settings.
+ * Actually, it is better to use engine control command, read from
+ * configuration file to set them
+ */
const struct gost_cipher_info *get_encryption_params(ASN1_OBJECT *obj)
- {
- int nid;
- struct gost_cipher_info *param;
- if (!obj)
- {
- const char * params = get_gost_engine_param(GOST_PARAM_CRYPT_PARAMS);
- if (!params || !strlen(params))
- return &gost_cipher_list[1];
-
- nid = OBJ_txt2nid(params);
- if (nid == NID_undef)
- {
- GOSTerr(GOST_F_GET_ENCRYPTION_PARAMS,
- GOST_R_INVALID_CIPHER_PARAM_OID);
- return NULL;
- }
- }
- else
- {
- nid= OBJ_obj2nid(obj);
- }
- for (param=gost_cipher_list;param->sblock!=NULL && param->nid!=nid;
- param++);
- if (!param->sblock)
- {
- GOSTerr(GOST_F_GET_ENCRYPTION_PARAMS,GOST_R_INVALID_CIPHER_PARAMS);
- return NULL;
- }
- return param;
- }
+{
+ int nid;
+ struct gost_cipher_info *param;
+ if (!obj) {
+ const char *params = get_gost_engine_param(GOST_PARAM_CRYPT_PARAMS);
+ if (!params || !strlen(params))
+ return &gost_cipher_list[1];
+
+ nid = OBJ_txt2nid(params);
+ if (nid == NID_undef) {
+ GOSTerr(GOST_F_GET_ENCRYPTION_PARAMS,
+ GOST_R_INVALID_CIPHER_PARAM_OID);
+ return NULL;
+ }
+ } else {
+ nid = OBJ_obj2nid(obj);
+ }
+ for (param = gost_cipher_list; param->sblock != NULL && param->nid != nid;
+ param++) ;
+ if (!param->sblock) {
+ GOSTerr(GOST_F_GET_ENCRYPTION_PARAMS, GOST_R_INVALID_CIPHER_PARAMS);
+ return NULL;
+ }
+ return param;
+}
/* Sets cipher param from paramset NID. */
-static int gost_cipher_set_param(struct ossl_gost_cipher_ctx *c,int nid)
- {
- const struct gost_cipher_info *param;
- param=get_encryption_params((nid==NID_undef?NULL:OBJ_nid2obj(nid)));
- if (!param) return 0;
-
- c->paramNID = param->nid;
- c->key_meshing=param->key_meshing;
- c->count=0;
- gost_init(&(c->cctx), param->sblock);
- return 1;
- }
+static int gost_cipher_set_param(struct ossl_gost_cipher_ctx *c, int nid)
+{
+ const struct gost_cipher_info *param;
+ param =
+ get_encryption_params((nid == NID_undef ? NULL : OBJ_nid2obj(nid)));
+ if (!param)
+ return 0;
+
+ c->paramNID = param->nid;
+ c->key_meshing = param->key_meshing;
+ c->count = 0;
+ gost_init(&(c->cctx), param->sblock);
+ return 1;
+}
/* Initializes EVP_CIPHER_CTX by paramset NID */
-static int gost_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=ctx->cipher_data;
- if (ctx->app_data == NULL)
- {
- if (!gost_cipher_set_param(c,paramNID)) return 0;
- ctx->app_data = ctx->cipher_data;
- }
- if (key) gost_key(&(c->cctx),key);
- if(iv) memcpy(ctx->oiv, iv, EVP_CIPHER_CTX_iv_length(ctx));
- memcpy(ctx->iv, ctx->oiv, EVP_CIPHER_CTX_iv_length(ctx));
- return 1;
- }
+static int gost_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 = ctx->cipher_data;
+ if (ctx->app_data == NULL) {
+ if (!gost_cipher_set_param(c, paramNID))
+ return 0;
+ ctx->app_data = ctx->cipher_data;
+ }
+ if (key)
+ gost_key(&(c->cctx), key);
+ if (iv)
+ memcpy(ctx->oiv, iv, EVP_CIPHER_CTX_iv_length(ctx));
+ memcpy(ctx->iv, ctx->oiv, EVP_CIPHER_CTX_iv_length(ctx));
+ return 1;
+}
static int gost_cipher_init_cpa(EVP_CIPHER_CTX *ctx, const unsigned char *key,
- const unsigned char *iv, int enc)
- {
- struct ossl_gost_cipher_ctx *c=ctx->cipher_data;
- gost_init(&(c->cctx),&Gost28147_CryptoProParamSetA);
- c->key_meshing=1;
- c->count=0;
- if(key) gost_key(&(c->cctx),key);
- if(iv) memcpy(ctx->oiv, iv, EVP_CIPHER_CTX_iv_length(ctx));
- memcpy(ctx->iv, ctx->oiv, EVP_CIPHER_CTX_iv_length(ctx));
- return 1;
- }
+ const unsigned char *iv, int enc)
+{
+ struct ossl_gost_cipher_ctx *c = ctx->cipher_data;
+ gost_init(&(c->cctx), &Gost28147_CryptoProParamSetA);
+ c->key_meshing = 1;
+ c->count = 0;
+ if (key)
+ gost_key(&(c->cctx), key);
+ if (iv)
+ memcpy(ctx->oiv, iv, EVP_CIPHER_CTX_iv_length(ctx));
+ memcpy(ctx->iv, ctx->oiv, EVP_CIPHER_CTX_iv_length(ctx));
+ return 1;
+}
/* Initializes EVP_CIPHER_CTX with default values */
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,EVP_CIPH_CFB_MODE);
- }
-/* Wrapper around gostcrypt function from gost89.c which perform
- * key meshing when nesseccary
+ const unsigned char *iv, int enc)
+{
+ return gost_cipher_init_param(ctx, key, iv, enc, NID_undef,
+ EVP_CIPH_CFB_MODE);
+}
+
+/*
+ * Wrapper around gostcrypt function from gost89.c which perform key meshing
+ * when nesseccary
*/
-static void gost_crypt_mesh (void *ctx,unsigned char *iv,unsigned char *buf)
- {
- struct ossl_gost_cipher_ctx *c = ctx;
- assert(c->count%8 == 0 && c->count <= 1024);
- if (c->key_meshing && c->count==1024)
- {
- cryptopro_key_meshing(&(c->cctx),iv);
- }
- gostcrypt(&(c->cctx),iv,buf);
- c->count = c->count%1024 + 8;
- }
-
-static void gost_cnt_next (void *ctx, unsigned char *iv, unsigned char *buf)
- {
- struct ossl_gost_cipher_ctx *c = ctx;
- word32 g,go;
- unsigned char buf1[8];
- assert(c->count%8 == 0 && c->count <= 1024);
- if (c->key_meshing && c->count==1024)
- {
- cryptopro_key_meshing(&(c->cctx),iv);
- }
- if (c->count==0)
- {
- gostcrypt(&(c->cctx),iv,buf1);
- }
- else
- {
- memcpy(buf1,iv,8);
- }
- g = buf1[0]|(buf1[1]<<8)|(buf1[2]<<16)|(buf1[3]<<24);
- g += 0x01010101;
- buf1[0]=(unsigned char)(g&0xff);
- buf1[1]=(unsigned char)((g>>8)&0xff);
- buf1[2]=(unsigned char)((g>>16)&0xff);
- buf1[3]=(unsigned char)((g>>24)&0xff);
- g = buf1[4]|(buf1[5]<<8)|(buf1[6]<<16)|(buf1[7]<<24);
- go = g;
- g += 0x01010104;
- if (go > g) /* overflow*/
- g++;
- buf1[4]=(unsigned char)(g&0xff);
- buf1[5]=(unsigned char)((g>>8)&0xff);
- buf1[6]=(unsigned char)((g>>16)&0xff);
- buf1[7]=(unsigned char)((g>>24)&0xff);
- memcpy(iv,buf1,8);
- gostcrypt(&(c->cctx),buf1,buf);
- c->count = c->count%1024 + 8;
- }
+static void gost_crypt_mesh(void *ctx, unsigned char *iv, unsigned char *buf)
+{
+ struct ossl_gost_cipher_ctx *c = ctx;
+ assert(c->count % 8 == 0 && c->count <= 1024);
+ if (c->key_meshing && c->count == 1024) {
+ cryptopro_key_meshing(&(c->cctx), iv);
+ }
+ gostcrypt(&(c->cctx), iv, buf);
+ c->count = c->count % 1024 + 8;
+}
+
+static void gost_cnt_next(void *ctx, unsigned char *iv, unsigned char *buf)
+{
+ struct ossl_gost_cipher_ctx *c = ctx;
+ word32 g, go;
+ unsigned char buf1[8];
+ assert(c->count % 8 == 0 && c->count <= 1024);
+ if (c->key_meshing && c->count == 1024) {
+ cryptopro_key_meshing(&(c->cctx), iv);
+ }
+ if (c->count == 0) {
+ gostcrypt(&(c->cctx), iv, buf1);
+ } else {
+ memcpy(buf1, iv, 8);
+ }
+ g = buf1[0] | (buf1[1] << 8) | (buf1[2] << 16) | (buf1[3] << 24);
+ g += 0x01010101;
+ buf1[0] = (unsigned char)(g & 0xff);
+ buf1[1] = (unsigned char)((g >> 8) & 0xff);
+ buf1[2] = (unsigned char)((g >> 16) & 0xff);
+ buf1[3] = (unsigned char)((g >> 24) & 0xff);
+ g = buf1[4] | (buf1[5] << 8) | (buf1[6] << 16) | (buf1[7] << 24);
+ go = g;
+ g += 0x01010104;
+ if (go > g) /* overflow */
+ g++;
+ buf1[4] = (unsigned char)(g & 0xff);
+ buf1[5] = (unsigned char)((g >> 8) & 0xff);
+ buf1[6] = (unsigned char)((g >> 16) & 0xff);
+ buf1[7] = (unsigned char)((g >> 24) & 0xff);
+ memcpy(iv, buf1, 8);
+ gostcrypt(&(c->cctx), buf1, buf);
+ c->count = c->count % 1024 + 8;
+}
/* GOST encryption in CFB mode */
-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;
- unsigned char *out_ptr=out;
- size_t i=0;
- size_t j=0;
+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;
+ unsigned char *out_ptr = out;
+ size_t i = 0;
+ size_t j = 0;
/* process partial block if any */
- if (ctx->num)
- {
- for (j=ctx->num,i=0;j<8 && i<inl;j++,i++,in_ptr++,out_ptr++)
- {
- if (!ctx->encrypt) ctx->buf[j+8]=*in_ptr;
- *out_ptr=ctx->buf[j]^(*in_ptr);
- if (ctx->encrypt) ctx->buf[j+8]=*out_ptr;
- }
- if (j==8)
- {
- memcpy(ctx->iv,ctx->buf+8,8);
- ctx->num=0;
- }
- else
- {
- ctx->num=j;
- return 1;
- }
- }
-
- for (;i+8<inl;i+=8,in_ptr+=8,out_ptr+=8)
- {
- /*block cipher current iv */
- gost_crypt_mesh(ctx->cipher_data,ctx->iv,ctx->buf);
- /*xor next block of input text with it and output it*/
- /*output this block */
- if (!ctx->encrypt) memcpy(ctx->iv,in_ptr,8);
- for (j=0;j<8;j++)
- {
- out_ptr[j]=ctx->buf[j]^in_ptr[j];
- }
- /* Encrypt */
- /* Next iv is next block of cipher text*/
- if (ctx->encrypt) memcpy(ctx->iv,out_ptr,8);
- }
+ if (ctx->num) {
+ for (j = ctx->num, i = 0; j < 8 && i < inl;
+ j++, i++, in_ptr++, out_ptr++) {
+ if (!ctx->encrypt)
+ ctx->buf[j + 8] = *in_ptr;
+ *out_ptr = ctx->buf[j] ^ (*in_ptr);
+ if (ctx->encrypt)
+ ctx->buf[j + 8] = *out_ptr;
+ }
+ if (j == 8) {
+ memcpy(ctx->iv, ctx->buf + 8, 8);
+ ctx->num = 0;
+ } else {
+ ctx->num = j;
+ return 1;
+ }
+ }
+
+ for (; i + 8 < inl; i += 8, in_ptr += 8, out_ptr += 8) {
+ /*
+ * block cipher current iv
+ */
+ gost_crypt_mesh(ctx->cipher_data, ctx->iv, ctx->buf);
+ /*
+ * xor next block of input text with it and output it
+ */
+ /*
+ * output this block
+ */
+ if (!ctx->encrypt)
+ memcpy(ctx->iv, in_ptr, 8);
+ for (j = 0; j < 8; j++) {
+ out_ptr[j] = ctx->buf[j] ^ in_ptr[j];
+ }
+ /* Encrypt */
+ /* Next iv is next block of cipher text */
+ if (ctx->encrypt)
+ memcpy(ctx->iv, out_ptr, 8);
+ }
/* Process rest of buffer */
- if (i<inl)
- {
- gost_crypt_mesh(ctx->cipher_data,ctx->iv,ctx->buf);
- if (!ctx->encrypt) memcpy(ctx->buf+8,in_ptr,inl-i);
- for (j=0;i<inl;j++,i++)
- {
- out_ptr[j]=ctx->buf[j]^in_ptr[j];
- }
- ctx->num = j;
- if (ctx->encrypt) memcpy(ctx->buf+8,out_ptr,j);
- }
- else
- {
- ctx->num = 0;
- }
- return 1;
- }
+ if (i < inl) {
+ gost_crypt_mesh(ctx->cipher_data, ctx->iv, ctx->buf);
+ if (!ctx->encrypt)
+ memcpy(ctx->buf + 8, in_ptr, inl - i);
+ for (j = 0; i < inl; j++, i++) {
+ out_ptr[j] = ctx->buf[j] ^ in_ptr[j];
+ }
+ ctx->num = j;
+ if (ctx->encrypt)
+ memcpy(ctx->buf + 8, out_ptr, j);
+ } else {
+ ctx->num = 0;
+ }
+ return 1;
+}
static int gost_cipher_do_cnt(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;
+ 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;
/* process partial block if any */
- if (ctx->num)
- {
- for (j=ctx->num,i=0;j<8 && i<inl;j++,i++,in_ptr++,out_ptr++)
- {
- *out_ptr=ctx->buf[j]^(*in_ptr);
- }
- if (j==8)
- {
- ctx->num=0;
- }
- else
- {
- ctx->num=j;
- return 1;
- }
- }
-
- for (;i+8<inl;i+=8,in_ptr+=8,out_ptr+=8)
- {
- /*block cipher current iv */
- /* Encrypt */
- gost_cnt_next(ctx->cipher_data,ctx->iv,ctx->buf);
- /*xor next block of input text with it and output it*/
- /*output this block */
- for (j=0;j<8;j++)
- {
- out_ptr[j]=ctx->buf[j]^in_ptr[j];
- }
- }
+ if (ctx->num) {
+ for (j = ctx->num, i = 0; j < 8 && i < inl;
+ j++, i++, in_ptr++, out_ptr++) {
+ *out_ptr = ctx->buf[j] ^ (*in_ptr);
+ }
+ if (j == 8) {
+ ctx->num = 0;
+ } else {
+ ctx->num = j;
+ return 1;
+ }
+ }
+
+ for (; i + 8 < inl; i += 8, in_ptr += 8, out_ptr += 8) {
+ /*
+ * block cipher current iv
+ */
+ /* Encrypt */
+ gost_cnt_next(ctx->cipher_data, ctx->iv, ctx->buf);
+ /*
+ * xor next block of input text with it and output it
+ */
+ /*
+ * output this block
+ */
+ for (j = 0; j < 8; j++) {
+ out_ptr[j] = ctx->buf[j] ^ in_ptr[j];
+ }
+ }
/* Process rest of buffer */
- if (i<inl)
- {
- gost_cnt_next(ctx->cipher_data,ctx->iv,ctx->buf);
- for (j=0;i<inl;j++,i++)
- {
- out_ptr[j]=ctx->buf[j]^in_ptr[j];
- }
- ctx->num = j;
- }
- else
- {
- ctx->num = 0;
- }
- return 1;
- }
+ if (i < inl) {
+ gost_cnt_next(ctx->cipher_data, ctx->iv, ctx->buf);
+ for (j = 0; i < inl; j++, i++) {
+ out_ptr[j] = ctx->buf[j] ^ in_ptr[j];
+ }
+ ctx->num = j;
+ } else {
+ ctx->num = 0;
+ }
+ return 1;
+}
/* Cleaning up of EVP_CIPHER_CTX */
-int gost_cipher_cleanup(EVP_CIPHER_CTX *ctx)
- {
- gost_destroy(&((struct ossl_gost_cipher_ctx *)ctx->cipher_data)->cctx);
- ctx->app_data = NULL;
- return 1;
- }
+int gost_cipher_cleanup(EVP_CIPHER_CTX *ctx)
+{
+ gost_destroy(&((struct ossl_gost_cipher_ctx *)ctx->cipher_data)->cctx);
+ ctx->app_data = NULL;
+ return 1;
+}
/* Control function for gost cipher */
-int gost_cipher_ctl(EVP_CIPHER_CTX *ctx,int type,int arg,void *ptr)
- {
- switch (type)
- {
- case EVP_CTRL_RAND_KEY:
- {
- if (RAND_bytes((unsigned char *)ptr,ctx->key_len)<=0)
- {
- GOSTerr(GOST_F_GOST_CIPHER_CTL,GOST_R_RANDOM_GENERATOR_ERROR);
- return -1;
- }
- break;
- }
- case EVP_CTRL_PBE_PRF_NID:
- if (ptr) {
- *((int *)ptr)= NID_id_HMACGostR3411_94;
- return 1;
- } else {
- return 0;
- }
-
- default:
- GOSTerr(GOST_F_GOST_CIPHER_CTL,GOST_R_UNSUPPORTED_CIPHER_CTL_COMMAND);
- return -1;
- }
- return 1;
- }
+int gost_cipher_ctl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
+{
+ switch (type) {
+ case EVP_CTRL_RAND_KEY:
+ {
+ if (RAND_bytes((unsigned char *)ptr, ctx->key_len) <= 0) {
+ GOSTerr(GOST_F_GOST_CIPHER_CTL,
+ GOST_R_RANDOM_GENERATOR_ERROR);
+ return -1;
+ }
+ break;
+ }
+ case EVP_CTRL_PBE_PRF_NID:
+ if (ptr) {
+ *((int *)ptr) = NID_id_HMACGostR3411_94;
+ return 1;
+ } else {
+ return 0;
+ }
+
+ default:
+ GOSTerr(GOST_F_GOST_CIPHER_CTL,
+ GOST_R_UNSUPPORTED_CIPHER_CTL_COMMAND);
+ return -1;
+ }
+ return 1;
+}
/* Set cipher parameters from ASN1 structure */
-int gost89_set_asn1_parameters(EVP_CIPHER_CTX *ctx,ASN1_TYPE *params)
- {
- int len=0;
- unsigned char *buf=NULL;
- unsigned char *p=NULL;
- struct ossl_gost_cipher_ctx *c = ctx->cipher_data;
- GOST_CIPHER_PARAMS *gcp = GOST_CIPHER_PARAMS_new();
- ASN1_OCTET_STRING *os = NULL;
- if (!gcp)
- {
- GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS, GOST_R_NO_MEMORY);
- return 0;
- }
- if (!ASN1_OCTET_STRING_set(gcp->iv, ctx->iv, ctx->cipher->iv_len))
- {
- GOST_CIPHER_PARAMS_free(gcp);
- GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS, GOST_R_NO_MEMORY);
- return 0;
- }
- ASN1_OBJECT_free(gcp->enc_param_set);
- gcp->enc_param_set = OBJ_nid2obj(c->paramNID);
-
- len = i2d_GOST_CIPHER_PARAMS(gcp, NULL);
- p = buf = (unsigned char*)OPENSSL_malloc(len);
- if (!buf)
- {
- GOST_CIPHER_PARAMS_free(gcp);
- GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS, GOST_R_NO_MEMORY);
- return 0;
- }
- i2d_GOST_CIPHER_PARAMS(gcp, &p);
- GOST_CIPHER_PARAMS_free(gcp);
-
- os = ASN1_OCTET_STRING_new();
-
- if(!os || !ASN1_OCTET_STRING_set(os, buf, len))
- {
- OPENSSL_free(buf);
- GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS, GOST_R_NO_MEMORY);
- return 0;
- }
- OPENSSL_free(buf);
-
- ASN1_TYPE_set(params, V_ASN1_SEQUENCE, os);
- return 1;
- }
+int gost89_set_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
+{
+ int len = 0;
+ unsigned char *buf = NULL;
+ unsigned char *p = NULL;
+ struct ossl_gost_cipher_ctx *c = ctx->cipher_data;
+ GOST_CIPHER_PARAMS *gcp = GOST_CIPHER_PARAMS_new();
+ ASN1_OCTET_STRING *os = NULL;
+ if (!gcp) {
+ GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS, GOST_R_NO_MEMORY);
+ return 0;
+ }
+ if (!ASN1_OCTET_STRING_set(gcp->iv, ctx->iv, ctx->cipher->iv_len)) {
+ GOST_CIPHER_PARAMS_free(gcp);
+ GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS, GOST_R_NO_MEMORY);
+ return 0;
+ }
+ ASN1_OBJECT_free(gcp->enc_param_set);
+ gcp->enc_param_set = OBJ_nid2obj(c->paramNID);
+
+ len = i2d_GOST_CIPHER_PARAMS(gcp, NULL);
+ p = buf = (unsigned char *)OPENSSL_malloc(len);
+ if (!buf) {
+ GOST_CIPHER_PARAMS_free(gcp);
+ GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS, GOST_R_NO_MEMORY);
+ return 0;
+ }
+ i2d_GOST_CIPHER_PARAMS(gcp, &p);
+ GOST_CIPHER_PARAMS_free(gcp);
+
+ os = ASN1_OCTET_STRING_new();
+
+ if (!os || !ASN1_OCTET_STRING_set(os, buf, len)) {
+ OPENSSL_free(buf);
+ GOSTerr(GOST_F_GOST89_SET_ASN1_PARAMETERS, GOST_R_NO_MEMORY);
+ return 0;
+ }
+ OPENSSL_free(buf);
+
+ ASN1_TYPE_set(params, V_ASN1_SEQUENCE, os);
+ return 1;
+}
/* Store parameters into ASN1 structure */
-int gost89_get_asn1_parameters(EVP_CIPHER_CTX *ctx,ASN1_TYPE *params)
- {
- int ret = -1;
- int len;
- GOST_CIPHER_PARAMS *gcp = NULL;
- unsigned char *p;
- struct ossl_gost_cipher_ctx *c=ctx->cipher_data;
- if (ASN1_TYPE_get(params) != V_ASN1_SEQUENCE)
- {
- return ret;
- }
-
- p = params->value.sequence->data;
-
- gcp = d2i_GOST_CIPHER_PARAMS(NULL, (const unsigned char **)&p,
- params->value.sequence->length);
-
- len = gcp->iv->length;
- if (len != ctx->cipher->iv_len)
- {
- GOST_CIPHER_PARAMS_free(gcp);
- GOSTerr(GOST_F_GOST89_GET_ASN1_PARAMETERS,
- GOST_R_INVALID_IV_LENGTH);
- return -1;
- }
- if (!gost_cipher_set_param(c,OBJ_obj2nid(gcp->enc_param_set)))
- {
- GOST_CIPHER_PARAMS_free(gcp);
- return -1;
- }
- memcpy(ctx->oiv, gcp->iv->data, len);
-
- GOST_CIPHER_PARAMS_free(gcp);
-
- return 1;
- }
-
+int gost89_get_asn1_parameters(EVP_CIPHER_CTX *ctx, ASN1_TYPE *params)
+{
+ int ret = -1;
+ int len;
+ GOST_CIPHER_PARAMS *gcp = NULL;
+ unsigned char *p;
+ struct ossl_gost_cipher_ctx *c = ctx->cipher_data;
+ if (ASN1_TYPE_get(params) != V_ASN1_SEQUENCE) {
+ return ret;
+ }
+
+ p = params->value.sequence->data;
+
+ gcp = d2i_GOST_CIPHER_PARAMS(NULL, (const unsigned char **)&p,
+ params->value.sequence->length);
+
+ len = gcp->iv->length;
+ if (len != ctx->cipher->iv_len) {
+ GOST_CIPHER_PARAMS_free(gcp);
+ GOSTerr(GOST_F_GOST89_GET_ASN1_PARAMETERS, GOST_R_INVALID_IV_LENGTH);
+ return -1;
+ }
+ if (!gost_cipher_set_param(c, OBJ_obj2nid(gcp->enc_param_set))) {
+ GOST_CIPHER_PARAMS_free(gcp);
+ return -1;
+ }
+ memcpy(ctx->oiv, gcp->iv->data, len);
+
+ GOST_CIPHER_PARAMS_free(gcp);
+
+ return 1;
+}
int gost_imit_init_cpa(EVP_MD_CTX *ctx)
- {
- struct ossl_gost_imit_ctx *c = ctx->md_data;
- memset(c->buffer,0,sizeof(c->buffer));
- memset(c->partial_block,0,sizeof(c->partial_block));
- c->count = 0;
- c->bytes_left=0;
- c->key_meshing=1;
- gost_init(&(c->cctx),&Gost28147_CryptoProParamSetA);
- return 1;
- }
-
-static void mac_block_mesh(struct ossl_gost_imit_ctx *c,const unsigned char *data)
- {
- unsigned char buffer[8];
- /* We are using local buffer for iv because CryptoPro doesn't
- * interpret internal state of MAC algorithm as iv during keymeshing
- * (but does initialize internal state from iv in key transport
- */
- assert(c->count%8 == 0 && c->count <= 1024);
- if (c->key_meshing && c->count==1024)
- {
- cryptopro_key_meshing(&(c->cctx),buffer);
- }
- mac_block(&(c->cctx),c->buffer,data);
- c->count = c->count%1024 + 8;
- }
+{
+ struct ossl_gost_imit_ctx *c = ctx->md_data;
+ memset(c->buffer, 0, sizeof(c->buffer));
+ memset(c->partial_block, 0, sizeof(c->partial_block));
+ c->count = 0;
+ c->bytes_left = 0;
+ c->key_meshing = 1;
+ gost_init(&(c->cctx), &Gost28147_CryptoProParamSetA);
+ return 1;
+}
+
+static void mac_block_mesh(struct ossl_gost_imit_ctx *c,
+ const unsigned char *data)
+{
+ unsigned char buffer[8];
+ /*
+ * We are using local buffer for iv because CryptoPro doesn't interpret
+ * internal state of MAC algorithm as iv during keymeshing (but does
+ * initialize internal state from iv in key transport
+ */
+ assert(c->count % 8 == 0 && c->count <= 1024);
+ if (c->key_meshing && c->count == 1024) {
+ cryptopro_key_meshing(&(c->cctx), buffer);
+ }
+ mac_block(&(c->cctx), c->buffer, data);
+ c->count = c->count % 1024 + 8;
+}
int gost_imit_update(EVP_MD_CTX *ctx, const void *data, size_t count)
- {
- struct ossl_gost_imit_ctx *c = ctx->md_data;
- const unsigned char *p = data;
- size_t bytes = count,i;
- if (!(c->key_set)) {
- GOSTerr(GOST_F_GOST_IMIT_UPDATE, GOST_R_MAC_KEY_NOT_SET);
- return 0;
- }
- if (c->bytes_left)
- {
- for (i=c->bytes_left;i<8&&bytes>0;bytes--,i++,p++)
- {
- c->partial_block[i]=*p;
- }
- if (i==8)
- {
- mac_block_mesh(c,c->partial_block);
- }
- else
- {
- c->bytes_left = i;
- return 1;
- }
- }
- while (bytes>8)
- {
- mac_block_mesh(c,p);
- p+=8;
- bytes-=8;
- }
- if (bytes>0)
- {
- memcpy(c->partial_block,p,bytes);
- }
- c->bytes_left=bytes;
- return 1;
- }
-
-int gost_imit_final(EVP_MD_CTX *ctx,unsigned char *md)
- {
- struct ossl_gost_imit_ctx *c = ctx->md_data;
- if (!c->key_set) {
- GOSTerr(GOST_F_GOST_IMIT_FINAL, GOST_R_MAC_KEY_NOT_SET);
- return 0;
- }
- if (c->count==0 && c->bytes_left)
- {
- unsigned char buffer[8];
- memset(buffer, 0, 8);
- gost_imit_update(ctx, buffer, 8);
- }
- if (c->bytes_left)
- {
- int i;
- for (i=c->bytes_left;i<8;i++)
- {
- c->partial_block[i]=0;
- }
- mac_block_mesh(c,c->partial_block);
- }
- get_mac(c->buffer,32,md);
- return 1;
- }
-
-int gost_imit_ctrl(EVP_MD_CTX *ctx,int type, int arg, void *ptr)
- {
- switch (type)
- {
- case EVP_MD_CTRL_KEY_LEN:
- *((unsigned int*)(ptr)) = 32;
- return 1;
- case EVP_MD_CTRL_SET_KEY:
- {
- if (arg!=32) {
- GOSTerr(GOST_F_GOST_IMIT_CTRL, GOST_R_INVALID_MAC_KEY_LENGTH);
- return 0;
- }
-
- gost_key(&(((struct ossl_gost_imit_ctx*)(ctx->md_data))->cctx),ptr) ;
- ((struct ossl_gost_imit_ctx*)(ctx->md_data))->key_set = 1;
- return 1;
-
- }
- default:
- return 0;
- }
- }
-
-int gost_imit_copy(EVP_MD_CTX *to,const EVP_MD_CTX *from)
- {
- memcpy(to->md_data,from->md_data,sizeof(struct ossl_gost_imit_ctx));
- return 1;
- }
+{
+ struct ossl_gost_imit_ctx *c = ctx->md_data;
+ const unsigned char *p = data;
+ size_t bytes = count, i;
+ if (!(c->key_set)) {
+ GOSTerr(GOST_F_GOST_IMIT_UPDATE, GOST_R_MAC_KEY_NOT_SET);
+ return 0;
+ }
+ if (c->bytes_left) {
+ for (i = c->bytes_left; i < 8 && bytes > 0; bytes--, i++, p++) {
+ c->partial_block[i] = *p;
+ }
+ if (i == 8) {
+ mac_block_mesh(c, c->partial_block);
+ } else {
+ c->bytes_left = i;
+ return 1;
+ }
+ }
+ while (bytes > 8) {
+ mac_block_mesh(c, p);
+ p += 8;
+ bytes -= 8;
+ }
+ if (bytes > 0) {
+ memcpy(c->partial_block, p, bytes);
+ }
+ c->bytes_left = bytes;
+ return 1;
+}
+
+int gost_imit_final(EVP_MD_CTX *ctx, unsigned char *md)
+{
+ struct ossl_gost_imit_ctx *c = ctx->md_data;
+ if (!c->key_set) {
+ GOSTerr(GOST_F_GOST_IMIT_FINAL, GOST_R_MAC_KEY_NOT_SET);
+ return 0;
+ }
+ if (c->count == 0 && c->bytes_left) {
+ unsigned char buffer[8];
+ memset(buffer, 0, 8);
+ gost_imit_update(ctx, buffer, 8);
+ }
+ if (c->bytes_left) {
+ int i;
+ for (i = c->bytes_left; i < 8; i++) {
+ c->partial_block[i] = 0;
+ }
+ mac_block_mesh(c, c->partial_block);
+ }
+ get_mac(c->buffer, 32, md);
+ return 1;
+}
+
+int gost_imit_ctrl(EVP_MD_CTX *ctx, int type, int arg, void *ptr)
+{
+ switch (type) {
+ case EVP_MD_CTRL_KEY_LEN:
+ *((unsigned int *)(ptr)) = 32;
+ return 1;
+ case EVP_MD_CTRL_SET_KEY:
+ {
+ if (arg != 32) {
+ GOSTerr(GOST_F_GOST_IMIT_CTRL, GOST_R_INVALID_MAC_KEY_LENGTH);
+ return 0;
+ }
+
+ gost_key(&(((struct ossl_gost_imit_ctx *)(ctx->md_data))->cctx),
+ ptr);
+ ((struct ossl_gost_imit_ctx *)(ctx->md_data))->key_set = 1;
+ return 1;
+
+ }
+ default:
+ return 0;
+ }
+}
+
+int gost_imit_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from)
+{
+ memcpy(to->md_data, from->md_data, sizeof(struct ossl_gost_imit_ctx));
+ return 1;
+}
/* Clean up imit ctx */
int gost_imit_cleanup(EVP_MD_CTX *ctx)
- {
- memset(ctx->md_data,0,sizeof(struct ossl_gost_imit_ctx));
- return 1;
- }
-
+{
+ memset(ctx->md_data, 0, sizeof(struct ossl_gost_imit_ctx));
+ return 1;
+}