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Reworked the API

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This commit is contained in:
Matthias Schiffer 2012-12-07 19:07:37 +01:00
parent f67c3f36b9
commit bccf64ec1b
4 changed files with 96 additions and 58 deletions
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44
include/libuecc/ecc.h
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@ -27,14 +27,14 @@
#ifndef _LIBUECC_ECC_H_
#define _LIBUECC_ECC_H_
typedef struct _ecc_public_key_256 {
typedef union _ecc_int_256 {
unsigned char p[32];
} ecc_public_key_256;
typedef struct _ecc_secret_key_256 {
/* old name */
unsigned char s[32];
} ecc_secret_key_256;
} ecc_int_256, ecc_secret_key_256, ecc_public_key_256;
/* a point on the curve unpacked for efficient calculation */
typedef struct _ecc_25519_work {
unsigned int X[32];
unsigned int Y[32];
@ -43,20 +43,36 @@ typedef struct _ecc_25519_work {
} ecc_25519_work;
void ecc_25519_load(ecc_25519_work *out, const ecc_public_key_256 *in);
void ecc_25519_store(ecc_public_key_256 *out, const ecc_25519_work *in);
void ecc_25519_load_xy(ecc_25519_work *out, const ecc_int_256 *x, const ecc_int_256 *y);
void ecc_25519_store_xy(ecc_int_256 *x, ecc_int_256 *y, const ecc_25519_work *in);
void ecc_25519_load_packed(ecc_25519_work *out, const ecc_int_256 *in);
void ecc_25519_store_packed(ecc_int_256 *out, const ecc_25519_work *in);
int ecc_25519_is_identity(const ecc_25519_work *in);
void ecc_25519_add(ecc_25519_work *out, const ecc_25519_work *in1, const ecc_25519_work *in2);
void ecc_25519_double(ecc_25519_work *out, const ecc_25519_work *in);
void ecc_25519_scalarmult(ecc_25519_work *out, const ecc_secret_key_256 *n, const ecc_25519_work *base);
void ecc_25519_scalarmult_base(ecc_25519_work *out, const ecc_secret_key_256 *n);
void ecc_25519_scalarmult(ecc_25519_work *out, const ecc_int_256 *n, const ecc_25519_work *base);
void ecc_25519_scalarmult_base(ecc_25519_work *out, const ecc_int_256 *n);
int ecc_25519_secret_is_zero(const ecc_secret_key_256 *in);
void ecc_25519_secret_add(ecc_secret_key_256 *out, const ecc_secret_key_256 *in1, const ecc_secret_key_256 *in2);
void ecc_25519_secret_sub(ecc_secret_key_256 *out, const ecc_secret_key_256 *in1, const ecc_secret_key_256 *in2);
void ecc_25519_secret_reduce(ecc_secret_key_256 *out, const ecc_secret_key_256 *in);
void ecc_25519_secret_mult(ecc_secret_key_256 *out, const ecc_secret_key_256 *in1, const ecc_secret_key_256 *in2);
void ecc_25519_secret_sanitize(ecc_secret_key_256 *out, const ecc_secret_key_256 *in);
/* operations on elements of the prime field F_q for q = 2^252 + 27742317777372353535851937790883648493 */
int ecc_25519_gf_is_zero(const ecc_int_256 *in);
void ecc_25519_gf_add(ecc_int_256 *out, const ecc_int_256 *in1, const ecc_int_256 *in2);
void ecc_25519_gf_sub(ecc_int_256 *out, const ecc_int_256 *in1, const ecc_int_256 *in2);
void ecc_25519_gf_reduce(ecc_int_256 *out, const ecc_int_256 *in);
void ecc_25519_gf_mult(ecc_int_256 *out, const ecc_int_256 *in1, const ecc_int_256 *in2);
void ecc_25519_gf_sanitize_secret(ecc_int_256 *out, const ecc_int_256 *in);
/* defines for the old names */
#define ecc_25519_load ecc_25519_load_packed
#define ecc_25519_store ecc_25519_store_packed
#define ecc_25519_secret_is_zero ecc_25519_gf_is_zero
#define ecc_25519_secret_add ecc_25519_gf_add
#define ecc_25519_secret_sub ecc_25519_gf_sub
#define ecc_25519_secret_reduce ecc_25519_gf_reduce
#define ecc_25519_secret_mult ecc_25519_gf_mult
#define ecc_25519_secret_sanitize ecc_25519_gf_sanitize_secret
#endif /* _LIBUECC_ECC_H_ */