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54 lines
2.4 KiB
C
54 lines
2.4 KiB
C
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/*
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* Internal functions for the NTRU cryptosystem, exposed in a header
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* that is expected to be included only by ntru.c and test programs.
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*/
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#ifndef PUTTY_CRYPTO_NTRU_H
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#define PUTTY_CRYPTO_NTRU_H
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unsigned ntru_ring_invert(uint16_t *out, const uint16_t *in,
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unsigned p, unsigned q);
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void ntru_ring_multiply(uint16_t *out, const uint16_t *a, const uint16_t *b,
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unsigned p, unsigned q);
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void ntru_mod3(uint16_t *out, const uint16_t *in, unsigned p, unsigned q);
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void ntru_round3(uint16_t *out, const uint16_t *in, unsigned p, unsigned q);
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void ntru_bias(uint16_t *out, const uint16_t *in, unsigned bias,
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unsigned p, unsigned q);
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void ntru_scale(uint16_t *out, const uint16_t *in, uint16_t scale,
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unsigned p, unsigned q);
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NTRUEncodeSchedule *ntru_encode_schedule(const uint16_t *ms_in, size_t n);
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void ntru_encode_schedule_free(NTRUEncodeSchedule *sched);
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size_t ntru_encode_schedule_length(NTRUEncodeSchedule *sched);
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size_t ntru_encode_schedule_nvals(NTRUEncodeSchedule *sched);
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void ntru_encode(NTRUEncodeSchedule *sched, const uint16_t *rs_in,
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BinarySink *bs);
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void ntru_decode(NTRUEncodeSchedule *sched, uint16_t *rs_out, ptrlen data);
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void ntru_gen_short(uint16_t *v, unsigned p, unsigned w);
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NTRUKeyPair *ntru_keygen_attempt(unsigned p, unsigned q, unsigned w);
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NTRUKeyPair *ntru_keygen(unsigned p, unsigned q, unsigned w);
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void ntru_keypair_free(NTRUKeyPair *keypair);
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void ntru_encrypt(uint16_t *ciphertext, const uint16_t *plaintext,
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uint16_t *pubkey, unsigned p, unsigned q);
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void ntru_decrypt(uint16_t *plaintext, const uint16_t *ciphertext,
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NTRUKeyPair *keypair);
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void ntru_encode_pubkey(const uint16_t *pubkey, unsigned p, unsigned q,
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BinarySink *bs);
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ptrlen ntru_decode_pubkey(uint16_t *pubkey, unsigned p, unsigned q,
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BinarySource *src);
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void ntru_encode_ciphertext(const uint16_t *ciphertext, unsigned p, unsigned q,
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BinarySink *bs);
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ptrlen ntru_decode_ciphertext(uint16_t *ct, NTRUKeyPair *keypair,
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BinarySource *src);
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void ntru_encode_plaintext(const uint16_t *plaintext, unsigned p,
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BinarySink *bs);
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unsigned ntru_keypair_p(NTRUKeyPair *keypair);
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const uint16_t *ntru_pubkey(NTRUKeyPair *keypair);
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#endif /* PUTTY_CRYPTO_NTRU_H */
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