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 buffer1;
31 } gost_grasshopper_cipher_ctx_ofb;
34 gost_grasshopper_cipher_ctx c;
35 grasshopper_w128_t partial_buffer;
36 unsigned int section_size; /* After how much bytes mesh the key,
37 if 0 never mesh and work like plain ctr. */
38 } gost_grasshopper_cipher_ctx_ctr;
41 mgm_associated_data = 0,
46 gost_grasshopper_cipher_ctx c;
47 grasshopper_w128_t partial_buffer;
49 mgm_state mgm_state; /* associated_data/plain text */
50 grasshopper_w128_t mgm_iv[16]; /* nonce */
51 grasshopper_w128_t mgm_partial_buffer; /* Rest of associated data */
53 size_t taglen; /* MAC length*/
54 unsigned char tag[16]; /* MAC - intermediate state */
55 unsigned char final_tag[16]; /* MAC - final state*/
56 } gost_grasshopper_cipher_ctx_mgm;
58 typedef int (* grasshopper_init_cipher_func)(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv,
61 typedef int (* grasshopper_do_cipher_func)(EVP_CIPHER_CTX* ctx, unsigned char* out, const unsigned char* in,
64 typedef void (* grasshopper_destroy_cipher_func)(gost_grasshopper_cipher_ctx* c);
66 void gost_grasshopper_cipher_key(gost_grasshopper_cipher_ctx* c, const uint8_t* k);
68 void gost_grasshopper_cipher_destroy(gost_grasshopper_cipher_ctx* c);
70 int gost_grasshopper_cipher_init_ecb(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
72 int gost_grasshopper_cipher_init_cbc(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
74 int gost_grasshopper_cipher_init_ofb(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
76 int gost_grasshopper_cipher_init_cfb(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
78 int gost_grasshopper_cipher_init_ctr(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
80 int gost_grasshopper_cipher_init_ctracpkm(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
82 int gost_grasshopper_cipher_init_mgm(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
84 int gost_grasshopper_cipher_init(EVP_CIPHER_CTX* ctx, const unsigned char* key,
85 const unsigned char* iv, int enc);
87 int gost_grasshopper_cipher_do(EVP_CIPHER_CTX* ctx, unsigned char* out,
88 const unsigned char* in, size_t inl);
90 int gost_grasshopper_cipher_do_ecb(EVP_CIPHER_CTX* ctx, unsigned char* out,
91 const unsigned char* in, size_t inl);
93 int gost_grasshopper_cipher_do_cbc(EVP_CIPHER_CTX* ctx, unsigned char* out,
94 const unsigned char* in, size_t inl);
96 int gost_grasshopper_cipher_do_ofb(EVP_CIPHER_CTX* ctx, unsigned char* out,
97 const unsigned char* in, size_t inl);
99 int gost_grasshopper_cipher_do_cfb(EVP_CIPHER_CTX* ctx, unsigned char* out,
100 const unsigned char* in, size_t inl);
102 int gost_grasshopper_cipher_do_ctr(EVP_CIPHER_CTX* ctx, unsigned char* out,
103 const unsigned char* in, size_t inl);
104 int gost_grasshopper_cipher_do_ctracpkm(EVP_CIPHER_CTX* ctx, unsigned char* out,
105 const unsigned char* in, size_t inl);
106 int gost_grasshopper_cipher_do_mgm(EVP_CIPHER_CTX* ctx, unsigned char* out,
107 const unsigned char* in, size_t inl);
109 int gost_grasshopper_cipher_cleanup(EVP_CIPHER_CTX* ctx);
111 int gost_grasshopper_set_asn1_parameters(EVP_CIPHER_CTX* ctx, ASN1_TYPE* params);
113 int gost_grasshopper_get_asn1_parameters(EVP_CIPHER_CTX* ctx, ASN1_TYPE* params);
115 int gost_grasshopper_cipher_ctl(EVP_CIPHER_CTX* ctx, int type, int arg, void* ptr);
117 EVP_CIPHER* cipher_gost_grasshopper_create(int cipher_type, int block_size);
119 const int cipher_gost_grasshopper_setup(EVP_CIPHER* cipher, uint8_t mode, int iv_size, bool padding, int extra_flags);
121 const EVP_CIPHER* cipher_gost_grasshopper(uint8_t mode, uint8_t num);
123 extern const EVP_CIPHER* cipher_gost_grasshopper_ecb();
124 extern const EVP_CIPHER* cipher_gost_grasshopper_cbc();
125 extern const EVP_CIPHER* cipher_gost_grasshopper_ofb();
126 extern const EVP_CIPHER* cipher_gost_grasshopper_cfb();
127 extern const EVP_CIPHER* cipher_gost_grasshopper_ctr();
128 extern const EVP_CIPHER* cipher_gost_grasshopper_ctracpkm();
129 extern const EVP_CIPHER* cipher_gost_grasshopper_mgm();
131 void cipher_gost_grasshopper_destroy(void);
133 #if defined(__cplusplus)