From 999ae6be3243c7b4a815247199447b53c39a3d65 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:26:58 +0200 Subject: Adding upstream version 1:7.9p1. Signed-off-by: Daniel Baumann --- sc25519.h | 80 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100644 sc25519.h (limited to 'sc25519.h') diff --git a/sc25519.h b/sc25519.h new file mode 100644 index 0000000..a2c15d5 --- /dev/null +++ b/sc25519.h @@ -0,0 +1,80 @@ +/* $OpenBSD: sc25519.h,v 1.3 2013/12/09 11:03:45 markus Exp $ */ + +/* + * Public Domain, Authors: Daniel J. Bernstein, Niels Duif, Tanja Lange, + * Peter Schwabe, Bo-Yin Yang. + * Copied from supercop-20130419/crypto_sign/ed25519/ref/sc25519.h + */ + +#ifndef SC25519_H +#define SC25519_H + +#include "crypto_api.h" + +#define sc25519 crypto_sign_ed25519_ref_sc25519 +#define shortsc25519 crypto_sign_ed25519_ref_shortsc25519 +#define sc25519_from32bytes crypto_sign_ed25519_ref_sc25519_from32bytes +#define shortsc25519_from16bytes crypto_sign_ed25519_ref_shortsc25519_from16bytes +#define sc25519_from64bytes crypto_sign_ed25519_ref_sc25519_from64bytes +#define sc25519_from_shortsc crypto_sign_ed25519_ref_sc25519_from_shortsc +#define sc25519_to32bytes crypto_sign_ed25519_ref_sc25519_to32bytes +#define sc25519_iszero_vartime crypto_sign_ed25519_ref_sc25519_iszero_vartime +#define sc25519_isshort_vartime crypto_sign_ed25519_ref_sc25519_isshort_vartime +#define sc25519_lt_vartime crypto_sign_ed25519_ref_sc25519_lt_vartime +#define sc25519_add crypto_sign_ed25519_ref_sc25519_add +#define sc25519_sub_nored crypto_sign_ed25519_ref_sc25519_sub_nored +#define sc25519_mul crypto_sign_ed25519_ref_sc25519_mul +#define sc25519_mul_shortsc crypto_sign_ed25519_ref_sc25519_mul_shortsc +#define sc25519_window3 crypto_sign_ed25519_ref_sc25519_window3 +#define sc25519_window5 crypto_sign_ed25519_ref_sc25519_window5 +#define sc25519_2interleave2 crypto_sign_ed25519_ref_sc25519_2interleave2 + +typedef struct +{ + crypto_uint32 v[32]; +} +sc25519; + +typedef struct +{ + crypto_uint32 v[16]; +} +shortsc25519; + +void sc25519_from32bytes(sc25519 *r, const unsigned char x[32]); + +void shortsc25519_from16bytes(shortsc25519 *r, const unsigned char x[16]); + +void sc25519_from64bytes(sc25519 *r, const unsigned char x[64]); + +void sc25519_from_shortsc(sc25519 *r, const shortsc25519 *x); + +void sc25519_to32bytes(unsigned char r[32], const sc25519 *x); + +int sc25519_iszero_vartime(const sc25519 *x); + +int sc25519_isshort_vartime(const sc25519 *x); + +int sc25519_lt_vartime(const sc25519 *x, const sc25519 *y); + +void sc25519_add(sc25519 *r, const sc25519 *x, const sc25519 *y); + +void sc25519_sub_nored(sc25519 *r, const sc25519 *x, const sc25519 *y); + +void sc25519_mul(sc25519 *r, const sc25519 *x, const sc25519 *y); + +void sc25519_mul_shortsc(sc25519 *r, const sc25519 *x, const shortsc25519 *y); + +/* Convert s into a representation of the form \sum_{i=0}^{84}r[i]2^3 + * with r[i] in {-4,...,3} + */ +void sc25519_window3(signed char r[85], const sc25519 *s); + +/* Convert s into a representation of the form \sum_{i=0}^{50}r[i]2^5 + * with r[i] in {-16,...,15} + */ +void sc25519_window5(signed char r[51], const sc25519 *s); + +void sc25519_2interleave2(unsigned char r[127], const sc25519 *s1, const sc25519 *s2); + +#endif -- cgit v1.2.3