3 * This file is distributed under the same license as OpenSSL
6 #ifndef GOST_GRASSHOPPER_CIPHER_H
7 #define GOST_GRASSHOPPER_CIPHER_H
9 #if defined(__cplusplus)
13 #include "gost_grasshopper_defines.h"
15 #include <openssl/evp.h>
21 grasshopper_key_t master_key;
22 grasshopper_key_t key;
23 grasshopper_round_keys_t encrypt_round_keys;
24 grasshopper_round_keys_t decrypt_round_keys;
25 grasshopper_w128_t buffer;
26 } gost_grasshopper_cipher_ctx;
29 gost_grasshopper_cipher_ctx c;
30 grasshopper_w128_t partial_buffer;
31 unsigned int section_size; /* After how much bytes mesh the key,
32 if 0 never mesh and work like plain ctr. */
33 unsigned char kdf_seed[8];
34 unsigned char tag[16];
36 } gost_grasshopper_cipher_ctx_ctr;
38 typedef int (* grasshopper_init_cipher_func)(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv,
41 typedef int (* grasshopper_do_cipher_func)(EVP_CIPHER_CTX* ctx, unsigned char* out, const unsigned char* in,
44 typedef void (* grasshopper_destroy_cipher_func)(gost_grasshopper_cipher_ctx* c);
46 void gost_grasshopper_cipher_key(gost_grasshopper_cipher_ctx* c, const uint8_t* k);
48 void gost_grasshopper_cipher_destroy(gost_grasshopper_cipher_ctx* c);
50 int gost_grasshopper_cipher_init_ecb(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
52 int gost_grasshopper_cipher_init_cbc(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
54 int gost_grasshopper_cipher_init_ofb(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
56 int gost_grasshopper_cipher_init_cfb(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
58 int gost_grasshopper_cipher_init_ctr(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
60 int gost_grasshopper_cipher_init_ctracpkm(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
62 int gost_grasshopper_cipher_init_ctracpkm_omac(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
64 int gost_grasshopper_cipher_init(EVP_CIPHER_CTX* ctx, const unsigned char* key,
65 const unsigned char* iv, int enc);
67 int gost_grasshopper_cipher_do(EVP_CIPHER_CTX* ctx, unsigned char* out,
68 const unsigned char* in, size_t inl);
70 int gost_grasshopper_cipher_do_ecb(EVP_CIPHER_CTX* ctx, unsigned char* out,
71 const unsigned char* in, size_t inl);
73 int gost_grasshopper_cipher_do_cbc(EVP_CIPHER_CTX* ctx, unsigned char* out,
74 const unsigned char* in, size_t inl);
76 int gost_grasshopper_cipher_do_ofb(EVP_CIPHER_CTX* ctx, unsigned char* out,
77 const unsigned char* in, size_t inl);
79 int gost_grasshopper_cipher_do_cfb(EVP_CIPHER_CTX* ctx, unsigned char* out,
80 const unsigned char* in, size_t inl);
82 int gost_grasshopper_cipher_do_ctr(EVP_CIPHER_CTX* ctx, unsigned char* out,
83 const unsigned char* in, size_t inl);
84 int gost_grasshopper_cipher_do_ctracpkm(EVP_CIPHER_CTX* ctx, unsigned char* out,
85 const unsigned char* in, size_t inl);
86 int gost_grasshopper_cipher_do_ctracpkm_omac(EVP_CIPHER_CTX* ctx, unsigned char* out,
87 const unsigned char* in, size_t inl);
89 int gost_grasshopper_cipher_cleanup(EVP_CIPHER_CTX* ctx);
91 int gost_grasshopper_set_asn1_parameters(EVP_CIPHER_CTX* ctx, ASN1_TYPE* params);
93 int gost_grasshopper_get_asn1_parameters(EVP_CIPHER_CTX* ctx, ASN1_TYPE* params);
95 int gost_grasshopper_cipher_ctl(EVP_CIPHER_CTX* ctx, int type, int arg, void* ptr);
97 EVP_CIPHER* cipher_gost_grasshopper_create(int cipher_type, int block_size);
99 const int cipher_gost_grasshopper_setup(EVP_CIPHER* cipher, uint8_t mode, int iv_size, bool padding, int extra_flags);
101 const EVP_CIPHER* cipher_gost_grasshopper(uint8_t mode, uint8_t num);
103 extern const EVP_CIPHER* cipher_gost_grasshopper_ecb();
104 extern const EVP_CIPHER* cipher_gost_grasshopper_cbc();
105 extern const EVP_CIPHER* cipher_gost_grasshopper_ofb();
106 extern const EVP_CIPHER* cipher_gost_grasshopper_cfb();
107 extern const EVP_CIPHER* cipher_gost_grasshopper_ctr();
108 extern const EVP_CIPHER* cipher_gost_grasshopper_ctracpkm();
109 extern const EVP_CIPHER* cipher_gost_grasshopper_ctracpkm_omac();
111 void cipher_gost_grasshopper_destroy(void);
113 #if defined(__cplusplus)