27 lines
591 B
C
27 lines
591 B
C
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#ifndef CSIDH_H
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#define CSIDH_H
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#include "u512.h"
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#include "fp.h"
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#include "mont.h"
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/* specific to p, should perhaps be somewhere else */
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#define num_primes 74
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#define max_exponent 5 /* (2*5+1)^74 is roughly 2^256 */
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typedef struct private_key {
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int8_t e[(num_primes + 1) / 2]; /* packed int4_t */
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} private_key;
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typedef struct public_key {
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fp A; /* Montgomery coefficient: represents y^2 = x^3 + Ax^2 + x */
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} public_key;
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extern const public_key base;
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void csidh_private(private_key *priv);
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bool csidh(public_key *out, public_key const *in, private_key const *priv);
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#endif
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