From e183e8b50da0b46a957c394af8612432a09a42ca Mon Sep 17 00:00:00 2001 From: Maxim Tishkov Date: Thu, 28 Apr 2016 13:38:49 +0300 Subject: Grasshopper && CMake --- gost_grasshopper_cipher.h | 108 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 108 insertions(+) create mode 100644 gost_grasshopper_cipher.h (limited to 'gost_grasshopper_cipher.h') diff --git a/gost_grasshopper_cipher.h b/gost_grasshopper_cipher.h new file mode 100644 index 0000000..c406614 --- /dev/null +++ b/gost_grasshopper_cipher.h @@ -0,0 +1,108 @@ +/* + * Maxim Tishkov 2016 + * This file is distributed under the same license as OpenSSL + */ + +#ifndef GOST_GRASSHOPPER_CIPHER_H +#define GOST_GRASSHOPPER_CIPHER_H + +#if defined(__cplusplus) +extern "C" { +#endif + +#include "gost_grasshopper_defines.h" + +#include + +// not thread safe +// because of buffers +typedef struct { + uint8_t type; + grasshopper_key_t key; + grasshopper_round_keys_t encrypt_round_keys; + grasshopper_round_keys_t decrypt_round_keys; + grasshopper_w128_t buffer; +} gost_grasshopper_cipher_ctx; + +typedef struct { + gost_grasshopper_cipher_ctx c; + grasshopper_w128_t buffer1; + uint32_t g; + uint32_t go; +} gost_grasshopper_cipher_ctx_ofb; + +typedef struct { + gost_grasshopper_cipher_ctx c; + grasshopper_w128_t iv_buffer; + grasshopper_w128_t partial_buffer; + uint64_t counter; +} gost_grasshopper_cipher_ctx_ctr; + +typedef int (* grasshopper_init_cipher_func)(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, + int enc); + +typedef int (* grasshopper_do_cipher_func)(EVP_CIPHER_CTX* ctx, unsigned char* out, const unsigned char* in, + size_t inl); + +typedef void (* grasshopper_destroy_cipher_func)(gost_grasshopper_cipher_ctx* c); + +static void gost_grasshopper_cipher_key(gost_grasshopper_cipher_ctx* c, const uint8_t* k); + +static void gost_grasshopper_cipher_destroy(gost_grasshopper_cipher_ctx* c); + +static int gost_grasshopper_cipher_init_ecb(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc); + +static int gost_grasshopper_cipher_init_cbc(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc); + +static int gost_grasshopper_cipher_init_ofb(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc); + +static int gost_grasshopper_cipher_init_cfb(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc); + +static int gost_grasshopper_cipher_init_ctr(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc); + +static int gost_grasshopper_cipher_init(EVP_CIPHER_CTX* ctx, const unsigned char* key, + const unsigned char* iv, int enc); + +static int gost_grasshopper_cipher_do(EVP_CIPHER_CTX* ctx, unsigned char* out, + const unsigned char* in, size_t inl); + +static int gost_grasshopper_cipher_do_ecb(EVP_CIPHER_CTX* ctx, unsigned char* out, + const unsigned char* in, size_t inl); + +static int gost_grasshopper_cipher_do_cbc(EVP_CIPHER_CTX* ctx, unsigned char* out, + const unsigned char* in, size_t inl); + +static int gost_grasshopper_cipher_do_ofb(EVP_CIPHER_CTX* ctx, unsigned char* out, + const unsigned char* in, size_t inl); + +static int gost_grasshopper_cipher_do_cfb(EVP_CIPHER_CTX* ctx, unsigned char* out, + const unsigned char* in, size_t inl); + +static int gost_grasshopper_cipher_do_ctr(EVP_CIPHER_CTX* ctx, unsigned char* out, + const unsigned char* in, size_t inl); + +static int gost_grasshopper_cipher_cleanup(EVP_CIPHER_CTX* ctx); + +static int gost_grasshopper_set_asn1_parameters(EVP_CIPHER_CTX* ctx, ASN1_TYPE* params); + +static int gost_grasshopper_get_asn1_parameters(EVP_CIPHER_CTX* ctx, ASN1_TYPE* params); + +static int gost_grasshopper_cipher_ctl(EVP_CIPHER_CTX* ctx, int type, int arg, void* ptr); + +static EVP_CIPHER* cipher_gost_grasshopper_create(int cipher_type, int block_size); + +static const int cipher_gost_grasshopper_setup(EVP_CIPHER* cipher, uint8_t mode, int iv_size, bool padding); + +static const EVP_CIPHER* cipher_gost_grasshopper(uint8_t mode, uint8_t num); + +extern const EVP_CIPHER* cipher_gost_grasshopper_ecb(); +extern const EVP_CIPHER* cipher_gost_grasshopper_cbc(); +extern const EVP_CIPHER* cipher_gost_grasshopper_ofb(); +extern const EVP_CIPHER* cipher_gost_grasshopper_cfb(); +extern const EVP_CIPHER* cipher_gost_grasshopper_ctr(); + +#if defined(__cplusplus) +} +#endif + +#endif -- cgit v1.1