* Declarations for GOST 28147-89 encryption algorithm *
* No OpenSSL libraries required to compile and use *
* this code *
- **********************************************************************/
+ **********************************************************************/
#ifndef GOST89_H
-#define GOST89_H
+# define GOST89_H
/* Typedef for unsigned 32-bit integer */
-#if __LONG_MAX__ > 2147483647L
-typedef unsigned int u4;
-#else
-typedef unsigned long u4;
-#endif
+# if __LONG_MAX__ > 2147483647L
+typedef unsigned int u4;
+# else
+typedef unsigned long u4;
+# endif
/* Typedef for unsigned 8-bit integer */
-typedef unsigned char byte;
+typedef unsigned char byte;
/* Internal representation of GOST substitution blocks */
typedef struct {
- byte k8[16];
- byte k7[16];
- byte k6[16];
- byte k5[16];
- byte k4[16];
- byte k3[16];
- byte k2[16];
- byte k1[16];
-} gost_subst_block;
-
+ byte k8[16];
+ byte k7[16];
+ byte k6[16];
+ byte k5[16];
+ byte k4[16];
+ byte k3[16];
+ byte k2[16];
+ byte k1[16];
+} gost_subst_block;
/* Cipher context includes key and preprocessed substitution block */
-typedef struct {
- u4 k[8];
- /* Constant s-boxes -- set up in gost_init(). */
- u4 k87[256],k65[256],k43[256],k21[256];
-} gost_ctx;
-/* Note: encrypt and decrypt expect full blocks--padding blocks is
- caller's responsibility. All bulk encryption is done in
- ECB mode by these calls. Other modes may be added easily
- enough. */
+typedef struct {
+ u4 k[8];
+ /* Constant s-boxes -- set up in gost_init(). */
+ u4 k87[256], k65[256], k43[256], k21[256];
+} gost_ctx;
+/*
+ * Note: encrypt and decrypt expect full blocks--padding blocks is caller's
+ * responsibility. All bulk encryption is done in ECB mode by these calls.
+ * Other modes may be added easily enough.
+ */
/* Encrypt several full blocks in ECB mode */
-void gost_enc(gost_ctx *ctx, const byte *clear,byte *cipher, int blocks);
+void gost_enc(gost_ctx * ctx, const byte * clear, byte * cipher, int blocks);
/* Decrypt several full blocks in ECB mode */
-void gost_dec(gost_ctx *ctx, const byte *cipher,byte *clear, int blocks);
+void gost_dec(gost_ctx * ctx, const byte * cipher, byte * clear, int blocks);
/* Encrypts several full blocks in CFB mode using 8byte IV */
-void gost_enc_cfb(gost_ctx *ctx,const byte *iv,const byte *clear,byte *cipher,int blocks);
+void gost_enc_cfb(gost_ctx * ctx, const byte * iv, const byte * clear,
+ byte * cipher, int blocks);
/* Decrypts several full blocks in CFB mode using 8byte IV */
-void gost_dec_cfb(gost_ctx *ctx,const byte *iv,const byte *cipher,byte *clear,int blocks);
+void gost_dec_cfb(gost_ctx * ctx, const byte * iv, const byte * cipher,
+ byte * clear, int blocks);
/* Encrypt one block */
-void gostcrypt(gost_ctx *c, const byte *in, byte *out);
+void gostcrypt(gost_ctx * c, const byte * in, byte * out);
/* Decrypt one block */
-void gostdecrypt(gost_ctx *c, const byte *in,byte *out);
+void gostdecrypt(gost_ctx * c, const byte * in, byte * out);
/* Set key into context */
-void gost_key(gost_ctx *ctx, const byte *key);
+void gost_key(gost_ctx * ctx, const byte * key);
/* Get key from context */
-void gost_get_key(gost_ctx *ctx, byte *key);
+void gost_get_key(gost_ctx * ctx, byte * key);
/* Set S-blocks into context */
-void gost_init(gost_ctx *ctx, const gost_subst_block *subst_block);
+void gost_init(gost_ctx * ctx, const gost_subst_block * subst_block);
/* Clean up context */
-void gost_destroy(gost_ctx *ctx);
+void gost_destroy(gost_ctx * ctx);
/* Intermediate function used for calculate hash */
-void gost_enc_with_key(gost_ctx *,byte *key,byte *inblock,byte *outblock);
+void gost_enc_with_key(gost_ctx *, byte * key, byte * inblock,
+ byte * outblock);
/* Compute MAC of given length in bits from data */
-int gost_mac(gost_ctx *ctx,int hmac_len,const unsigned char *data,
- unsigned int data_len,unsigned char *hmac) ;
-/* Compute MAC of given length in bits from data, using non-zero 8-byte
- * IV (non-standard, for use in CryptoPro key transport only */
-int gost_mac_iv(gost_ctx *ctx,int hmac_len,const unsigned char *iv,const unsigned char *data,
- unsigned int data_len,unsigned char *hmac) ;
+int gost_mac(gost_ctx * ctx, int hmac_len, const unsigned char *data,
+ unsigned int data_len, unsigned char *hmac);
+/*
+ * Compute MAC of given length in bits from data, using non-zero 8-byte IV
+ * (non-standard, for use in CryptoPro key transport only
+ */
+int gost_mac_iv(gost_ctx * ctx, int hmac_len, const unsigned char *iv,
+ const unsigned char *data, unsigned int data_len,
+ unsigned char *hmac);
/* Perform one step of MAC calculation like gostcrypt */
-void mac_block(gost_ctx *c,byte *buffer,const byte *block);
+void mac_block(gost_ctx * c, byte * buffer, const byte * block);
/* Extracts MAC value from mac state buffer */
-void get_mac(byte *buffer,int nbits,byte *out);
+void get_mac(byte * buffer, int nbits, byte * out);
/* Implements cryptopro key meshing algorithm. Expect IV to be 8-byte size*/
-void cryptopro_key_meshing(gost_ctx *ctx, unsigned char *iv);
+void cryptopro_key_meshing(gost_ctx * ctx, unsigned char *iv);
/* Parameter sets specified in RFC 4357 */
extern gost_subst_block GostR3411_94_TestParamSet;
extern gost_subst_block GostR3411_94_CryptoProParamSet;
extern gost_subst_block Gost28147_CryptoProParamSetB;
extern gost_subst_block Gost28147_CryptoProParamSetC;
extern gost_subst_block Gost28147_CryptoProParamSetD;
-extern const byte CryptoProKeyMeshingKey[];
-typedef unsigned int word32;
+extern const byte CryptoProKeyMeshingKey[];
+typedef unsigned int word32;
#endif
projects / openssl.git / blobdiff