diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/libuecc/ecc.h | 46 |
1 files changed, 31 insertions, 15 deletions
diff --git a/include/libuecc/ecc.h b/include/libuecc/ecc.h index cf584cf..b8f8bc5 100644 --- a/include/libuecc/ecc.h +++ b/include/libuecc/ecc.h @@ -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); - -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); +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); + +/* 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_ */ |