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47 lines
1012 B
C++
47 lines
1012 B
C++
#ifndef LLARP_CRYPTO_EC_HPP
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#define LLARP_CRYPTO_EC_HPP
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#include "types.hpp"
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extern "C"
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{
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#include <sodium/private/ed25519_ref10.h>
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}
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namespace llarp
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{
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namespace sodium
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{
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void
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sc25519_reduce32(byte_t *s);
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/*
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Input:
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a[0]+256*a[1]+...+256^31*a[31] = a
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b[0]+256*b[1]+...+256^31*b[31] = b
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c[0]+256*c[1]+...+256^31*c[31] = c
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Output:
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s[0]+256*s[1]+...+256^31*s[31] = (c-ab) mod l
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where l = 2^252 + 27742317777372353535851937790883648493.
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*/
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void
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sc25519_mulsub(byte_t *s, const byte_t *a, const byte_t *b,
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const byte_t *c);
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void
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sc25519_sub(byte_t *, const byte_t *, const byte_t *);
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int
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ge25519_frombytes_vartime(ge25519_p3 *, const byte_t *);
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int
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sc25519_check(const byte_t *);
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void
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ge25519_double_scalarmult_base_vartime(ge25519_p2 *, const byte_t *,
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const ge25519_p3 *, const byte_t *);
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} // namespace sodium
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} // namespace llarp
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#endif
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