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 } gost_grasshopper_cipher_ctx_ctr;
35 typedef int (* grasshopper_init_cipher_func)(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv,
38 typedef int (* grasshopper_do_cipher_func)(EVP_CIPHER_CTX* ctx, unsigned char* out, const unsigned char* in,
41 typedef void (* grasshopper_destroy_cipher_func)(gost_grasshopper_cipher_ctx* c);
43 void gost_grasshopper_cipher_key(gost_grasshopper_cipher_ctx* c, const uint8_t* k);
45 void gost_grasshopper_cipher_destroy(gost_grasshopper_cipher_ctx* c);
47 int gost_grasshopper_cipher_init_ecb(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
49 int gost_grasshopper_cipher_init_cbc(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
51 int gost_grasshopper_cipher_init_ofb(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
53 int gost_grasshopper_cipher_init_cfb(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
55 int gost_grasshopper_cipher_init_ctr(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
57 int gost_grasshopper_cipher_init_ctracpkm(EVP_CIPHER_CTX* ctx, const unsigned char* key, const unsigned char* iv, int enc);
59 int gost_grasshopper_cipher_init(EVP_CIPHER_CTX* ctx, const unsigned char* key,
60 const unsigned char* iv, int enc);
62 int gost_grasshopper_cipher_do(EVP_CIPHER_CTX* ctx, unsigned char* out,
63 const unsigned char* in, size_t inl);
65 int gost_grasshopper_cipher_do_ecb(EVP_CIPHER_CTX* ctx, unsigned char* out,
66 const unsigned char* in, size_t inl);
68 int gost_grasshopper_cipher_do_cbc(EVP_CIPHER_CTX* ctx, unsigned char* out,
69 const unsigned char* in, size_t inl);
71 int gost_grasshopper_cipher_do_ofb(EVP_CIPHER_CTX* ctx, unsigned char* out,
72 const unsigned char* in, size_t inl);
74 int gost_grasshopper_cipher_do_cfb(EVP_CIPHER_CTX* ctx, unsigned char* out,
75 const unsigned char* in, size_t inl);
77 int gost_grasshopper_cipher_do_ctr(EVP_CIPHER_CTX* ctx, unsigned char* out,
78 const unsigned char* in, size_t inl);
79 int gost_grasshopper_cipher_do_ctracpkm(EVP_CIPHER_CTX* ctx, unsigned char* out,
80 const unsigned char* in, size_t inl);
82 int gost_grasshopper_cipher_cleanup(EVP_CIPHER_CTX* ctx);
84 int gost_grasshopper_set_asn1_parameters(EVP_CIPHER_CTX* ctx, ASN1_TYPE* params);
86 int gost_grasshopper_get_asn1_parameters(EVP_CIPHER_CTX* ctx, ASN1_TYPE* params);
88 int gost_grasshopper_cipher_ctl(EVP_CIPHER_CTX* ctx, int type, int arg, void* ptr);
90 EVP_CIPHER* cipher_gost_grasshopper_create(int cipher_type, int block_size);
92 const int cipher_gost_grasshopper_setup(EVP_CIPHER* cipher, uint8_t mode, int iv_size, bool padding);
94 const EVP_CIPHER* cipher_gost_grasshopper(uint8_t mode, uint8_t num);
96 extern const EVP_CIPHER* cipher_gost_grasshopper_ecb();
97 extern const EVP_CIPHER* cipher_gost_grasshopper_cbc();
98 extern const EVP_CIPHER* cipher_gost_grasshopper_ofb();
99 extern const EVP_CIPHER* cipher_gost_grasshopper_cfb();
100 extern const EVP_CIPHER* cipher_gost_grasshopper_ctr();
101 extern const EVP_CIPHER* cipher_gost_grasshopper_ctracpkm();
103 void cipher_gost_grasshopper_destroy(void);
105 #if defined(__cplusplus)