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Annotation of src/usr.bin/ssh/sc25519.h, Revision 1.2

1.2     ! djm         1: /* $OpenBSD$ */
1.1       markus      2:
                      3: /* Public Domain, from supercop-20130419/crypto_sign/ed25519/ref/sc25519.h */
                      4:
                      5: #ifndef SC25519_H
                      6: #define SC25519_H
                      7:
                      8: #include "crypto_api.h"
                      9:
                     10: #define sc25519                  crypto_sign_ed25519_ref_sc25519
                     11: #define shortsc25519             crypto_sign_ed25519_ref_shortsc25519
                     12: #define sc25519_from32bytes      crypto_sign_ed25519_ref_sc25519_from32bytes
                     13: #define shortsc25519_from16bytes crypto_sign_ed25519_ref_shortsc25519_from16bytes
                     14: #define sc25519_from64bytes      crypto_sign_ed25519_ref_sc25519_from64bytes
                     15: #define sc25519_from_shortsc     crypto_sign_ed25519_ref_sc25519_from_shortsc
                     16: #define sc25519_to32bytes        crypto_sign_ed25519_ref_sc25519_to32bytes
                     17: #define sc25519_iszero_vartime   crypto_sign_ed25519_ref_sc25519_iszero_vartime
                     18: #define sc25519_isshort_vartime  crypto_sign_ed25519_ref_sc25519_isshort_vartime
                     19: #define sc25519_lt_vartime       crypto_sign_ed25519_ref_sc25519_lt_vartime
                     20: #define sc25519_add              crypto_sign_ed25519_ref_sc25519_add
                     21: #define sc25519_sub_nored        crypto_sign_ed25519_ref_sc25519_sub_nored
                     22: #define sc25519_mul              crypto_sign_ed25519_ref_sc25519_mul
                     23: #define sc25519_mul_shortsc      crypto_sign_ed25519_ref_sc25519_mul_shortsc
                     24: #define sc25519_window3          crypto_sign_ed25519_ref_sc25519_window3
                     25: #define sc25519_window5          crypto_sign_ed25519_ref_sc25519_window5
                     26: #define sc25519_2interleave2     crypto_sign_ed25519_ref_sc25519_2interleave2
                     27:
                     28: typedef struct
                     29: {
                     30:   crypto_uint32 v[32];
                     31: }
                     32: sc25519;
                     33:
                     34: typedef struct
                     35: {
                     36:   crypto_uint32 v[16];
                     37: }
                     38: shortsc25519;
                     39:
                     40: void sc25519_from32bytes(sc25519 *r, const unsigned char x[32]);
                     41:
                     42: void shortsc25519_from16bytes(shortsc25519 *r, const unsigned char x[16]);
                     43:
                     44: void sc25519_from64bytes(sc25519 *r, const unsigned char x[64]);
                     45:
                     46: void sc25519_from_shortsc(sc25519 *r, const shortsc25519 *x);
                     47:
                     48: void sc25519_to32bytes(unsigned char r[32], const sc25519 *x);
                     49:
                     50: int sc25519_iszero_vartime(const sc25519 *x);
                     51:
                     52: int sc25519_isshort_vartime(const sc25519 *x);
                     53:
                     54: int sc25519_lt_vartime(const sc25519 *x, const sc25519 *y);
                     55:
                     56: void sc25519_add(sc25519 *r, const sc25519 *x, const sc25519 *y);
                     57:
                     58: void sc25519_sub_nored(sc25519 *r, const sc25519 *x, const sc25519 *y);
                     59:
                     60: void sc25519_mul(sc25519 *r, const sc25519 *x, const sc25519 *y);
                     61:
                     62: void sc25519_mul_shortsc(sc25519 *r, const sc25519 *x, const shortsc25519 *y);
                     63:
                     64: /* Convert s into a representation of the form \sum_{i=0}^{84}r[i]2^3
                     65:  * with r[i] in {-4,...,3}
                     66:  */
                     67: void sc25519_window3(signed char r[85], const sc25519 *s);
                     68:
                     69: /* Convert s into a representation of the form \sum_{i=0}^{50}r[i]2^5
                     70:  * with r[i] in {-16,...,15}
                     71:  */
                     72: void sc25519_window5(signed char r[51], const sc25519 *s);
                     73:
                     74: void sc25519_2interleave2(unsigned char r[127], const sc25519 *s1, const sc25519 *s2);
                     75:
                     76: #endif