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ed448.h
Go to the documentation of this file.
#ifndef __DECAF_ED448_H__
#define __DECAF_ED448_H__ 1
#include <decaf/point_448.h>
#include <decaf/shake.h>
#include <decaf/sha512.h>
#ifdef __cplusplus
extern "C" {
#endif
#define DECAF_EDDSA_448_PUBLIC_BYTES 57
#define DECAF_EDDSA_448_PRIVATE_BYTES DECAF_EDDSA_448_PUBLIC_BYTES
#define DECAF_EDDSA_448_SIGNATURE_BYTES (DECAF_EDDSA_448_PUBLIC_BYTES + DECAF_EDDSA_448_PRIVATE_BYTES)
#if defined _MSC_VER /* Different syntax for exposing API */
#define DECAF_EDDSA_448_SUPPORTS_CONTEXTLESS_SIGS 0
#else
#define DECAF_EDDSA_448_SUPPORTS_CONTEXTLESS_SIGS 0
#endif
#define decaf_ed448_prehash_ctx_s decaf_shake256_ctx_s
#define decaf_ed448_prehash_ctx_t decaf_shake256_ctx_t
#define decaf_ed448_prehash_update decaf_shake256_update
#define decaf_ed448_prehash_destroy decaf_shake256_destroy
#define DECAF_448_EDDSA_ENCODE_RATIO 4
#define DECAF_448_EDDSA_DECODE_RATIO (4 / 4)
#ifndef DECAF_EDDSA_NON_KEYPAIR_API_IS_DEPRECATED
#define DECAF_EDDSA_NON_KEYPAIR_API_IS_DEPRECATED 1
#endif
typedef struct decaf_eddsa_448_keypair_s {
uint8_t privkey[DECAF_EDDSA_448_PRIVATE_BYTES];
uint8_t pubkey[DECAF_EDDSA_448_PUBLIC_BYTES];
} decaf_eddsa_448_keypair_s, decaf_eddsa_448_keypair_t[1];
void DECAF_API_VIS decaf_ed448_derive_public_key (
uint8_t pubkey[DECAF_EDDSA_448_PUBLIC_BYTES],
const uint8_t privkey[DECAF_EDDSA_448_PRIVATE_BYTES]
) DECAF_NONNULL DECAF_NOINLINE;
void DECAF_API_VIS decaf_ed448_derive_keypair (
decaf_eddsa_448_keypair_t keypair,
const uint8_t privkey[DECAF_EDDSA_448_PRIVATE_BYTES]
) DECAF_NONNULL DECAF_NOINLINE;
void DECAF_API_VIS decaf_ed448_keypair_extract_public_key (
uint8_t pubkey[DECAF_EDDSA_448_PUBLIC_BYTES],
const decaf_eddsa_448_keypair_t keypair
) DECAF_NONNULL DECAF_NOINLINE;
void DECAF_API_VIS decaf_ed448_keypair_extract_private_key (
uint8_t privkey[DECAF_EDDSA_448_PRIVATE_BYTES],
const decaf_eddsa_448_keypair_t keypair
) DECAF_NONNULL DECAF_NOINLINE;
void DECAF_API_VIS decaf_ed448_keypair_destroy (
decaf_eddsa_448_keypair_t keypair
) DECAF_NONNULL DECAF_NOINLINE;
void DECAF_API_VIS decaf_ed448_sign (
uint8_t signature[DECAF_EDDSA_448_SIGNATURE_BYTES],
const uint8_t privkey[DECAF_EDDSA_448_PRIVATE_BYTES],
const uint8_t pubkey[DECAF_EDDSA_448_PUBLIC_BYTES],
const uint8_t *message,
size_t message_len,
uint8_t prehashed,
const uint8_t *context,
uint8_t context_len
) __attribute__((nonnull(1,2,3))) DECAF_NOINLINE
#if DECAF_EDDSA_NON_KEYPAIR_API_IS_DEPRECATED
__attribute__((deprecated("Passing the pubkey and privkey separately is unsafe, use "
"decaf_ed448_keypair_sign")))
#endif
;
void DECAF_API_VIS decaf_ed448_sign_prehash (
uint8_t signature[DECAF_EDDSA_448_SIGNATURE_BYTES],
const uint8_t privkey[DECAF_EDDSA_448_PRIVATE_BYTES],
const uint8_t pubkey[DECAF_EDDSA_448_PUBLIC_BYTES],
const decaf_ed448_prehash_ctx_t hash,
const uint8_t *context,
uint8_t context_len
) __attribute__((nonnull(1,2,3,4))) DECAF_NOINLINE
#if DECAF_EDDSA_NON_KEYPAIR_API_IS_DEPRECATED
__attribute__((deprecated("Passing the pubkey and privkey separately is unsafe, use "
"decaf_ed448_keypair_sign_prehash")))
#endif
;
void DECAF_API_VIS decaf_ed448_keypair_sign (
uint8_t signature[DECAF_EDDSA_448_SIGNATURE_BYTES],
const decaf_eddsa_448_keypair_t keypair,
const uint8_t *message,
size_t message_len,
uint8_t prehashed,
const uint8_t *context,
uint8_t context_len
) __attribute__((nonnull(1,2,3))) DECAF_NOINLINE;
void DECAF_API_VIS decaf_ed448_keypair_sign_prehash (
uint8_t signature[DECAF_EDDSA_448_SIGNATURE_BYTES],
const decaf_eddsa_448_keypair_t keypair,
const decaf_ed448_prehash_ctx_t hash,
const uint8_t *context,
uint8_t context_len
) __attribute__((nonnull(1,2,3,4))) DECAF_NOINLINE;
void DECAF_API_VIS decaf_ed448_prehash_init (
decaf_ed448_prehash_ctx_t hash
) __attribute__((nonnull(1))) DECAF_NOINLINE;
decaf_error_t DECAF_API_VIS decaf_ed448_verify (
const uint8_t signature[DECAF_EDDSA_448_SIGNATURE_BYTES],
const uint8_t pubkey[DECAF_EDDSA_448_PUBLIC_BYTES],
const uint8_t *message,
size_t message_len,
uint8_t prehashed,
const uint8_t *context,
uint8_t context_len
) __attribute__((nonnull(1,2))) DECAF_NOINLINE;
decaf_error_t DECAF_API_VIS decaf_ed448_verify_prehash (
const uint8_t signature[DECAF_EDDSA_448_SIGNATURE_BYTES],
const uint8_t pubkey[DECAF_EDDSA_448_PUBLIC_BYTES],
const decaf_ed448_prehash_ctx_t hash,
const uint8_t *context,
uint8_t context_len
) __attribute__((nonnull(1,2))) DECAF_NOINLINE;
void DECAF_API_VIS decaf_448_point_mul_by_ratio_and_encode_like_eddsa (
uint8_t enc[DECAF_EDDSA_448_PUBLIC_BYTES],
const decaf_448_point_t p
) DECAF_NONNULL DECAF_NOINLINE;
decaf_error_t DECAF_API_VIS decaf_448_point_decode_like_eddsa_and_mul_by_ratio (
decaf_448_point_t p,
const uint8_t enc[DECAF_EDDSA_448_PUBLIC_BYTES]
) DECAF_NONNULL DECAF_NOINLINE;
void DECAF_API_VIS decaf_ed448_convert_public_key_to_x448 (
uint8_t x[DECAF_X448_PUBLIC_BYTES],
const uint8_t ed[DECAF_EDDSA_448_PUBLIC_BYTES]
) DECAF_NONNULL DECAF_NOINLINE;
void DECAF_API_VIS decaf_ed448_convert_private_key_to_x448 (
uint8_t x[DECAF_X448_PRIVATE_BYTES],
const uint8_t ed[DECAF_EDDSA_448_PRIVATE_BYTES]
) DECAF_NONNULL DECAF_NOINLINE;
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* __DECAF_ED448_H__ */
decaf_error_t
decaf_error_t
Another boolean type used to indicate success or failure.
Definition common.h:120
decaf_ed448_keypair_extract_public_key
void DECAF_API_VIS decaf_ed448_keypair_extract_public_key(uint8_t pubkey[DECAF_EDDSA_448_PUBLIC_BYTES], const decaf_eddsa_448_keypair_t keypair) DECAF_NONNULL DECAF_NOINLINE
Extract the public key from an EdDSA keypair.
decaf_ed448_verify_prehash
decaf_error_t DECAF_API_VIS decaf_ed448_verify_prehash(const uint8_t signature[DECAF_EDDSA_448_SIGNATURE_BYTES], const uint8_t pubkey[DECAF_EDDSA_448_PUBLIC_BYTES], const decaf_ed448_prehash_ctx_t hash, const uint8_t *context, uint8_t context_len) DECAF_NOINLINE
EdDSA signature verification.
decaf_ed448_keypair_sign
void DECAF_API_VIS decaf_ed448_keypair_sign(uint8_t signature[DECAF_EDDSA_448_SIGNATURE_BYTES], const decaf_eddsa_448_keypair_t keypair, const uint8_t *message, size_t message_len, uint8_t prehashed, const uint8_t *context, uint8_t context_len) DECAF_NOINLINE
EdDSA signing.
decaf_ed448_convert_public_key_to_x448
void DECAF_API_VIS decaf_ed448_convert_public_key_to_x448(uint8_t x[DECAF_X448_PUBLIC_BYTES], const uint8_t ed[DECAF_EDDSA_448_PUBLIC_BYTES]) DECAF_NONNULL DECAF_NOINLINE
EdDSA to ECDH public key conversion Deserialize the point to get y on Edwards curve,...
Definition decaf.c:1335
DECAF_EDDSA_448_SIGNATURE_BYTES
#define DECAF_EDDSA_448_SIGNATURE_BYTES
Number of bytes in an EdDSA private key.
Definition ed448.h:33
DECAF_EDDSA_448_PUBLIC_BYTES
#define DECAF_EDDSA_448_PUBLIC_BYTES
Number of bytes in an EdDSA public key.
Definition ed448.h:27
DECAF_EDDSA_448_PRIVATE_BYTES
#define DECAF_EDDSA_448_PRIVATE_BYTES
Number of bytes in an EdDSA private key.
Definition ed448.h:30
decaf_ed448_keypair_extract_private_key
void DECAF_API_VIS decaf_ed448_keypair_extract_private_key(uint8_t privkey[DECAF_EDDSA_448_PRIVATE_BYTES], const decaf_eddsa_448_keypair_t keypair) DECAF_NONNULL DECAF_NOINLINE
Extract the private key from an EdDSA keypair.
decaf_ed448_keypair_destroy
void DECAF_API_VIS decaf_ed448_keypair_destroy(decaf_eddsa_448_keypair_t keypair) DECAF_NONNULL DECAF_NOINLINE
EdDSA keypair destructor.
decaf_ed448_verify
decaf_error_t DECAF_API_VIS decaf_ed448_verify(const uint8_t signature[DECAF_EDDSA_448_SIGNATURE_BYTES], const uint8_t pubkey[DECAF_EDDSA_448_PUBLIC_BYTES], const uint8_t *message, size_t message_len, uint8_t prehashed, const uint8_t *context, uint8_t context_len) DECAF_NOINLINE
EdDSA signature verification.
decaf_ed448_derive_public_key
void DECAF_API_VIS decaf_ed448_derive_public_key(uint8_t pubkey[DECAF_EDDSA_448_PUBLIC_BYTES], const uint8_t privkey[DECAF_EDDSA_448_PRIVATE_BYTES]) DECAF_NONNULL DECAF_NOINLINE
EdDSA key generation.
decaf_448_point_decode_like_eddsa_and_mul_by_ratio
decaf_error_t DECAF_API_VIS decaf_448_point_decode_like_eddsa_and_mul_by_ratio(decaf_448_point_t p, const uint8_t enc[DECAF_EDDSA_448_PUBLIC_BYTES]) DECAF_NONNULL DECAF_NOINLINE
EdDSA point decoding.
decaf_ed448_derive_keypair
void DECAF_API_VIS decaf_ed448_derive_keypair(decaf_eddsa_448_keypair_t keypair, const uint8_t privkey[DECAF_EDDSA_448_PRIVATE_BYTES]) DECAF_NONNULL DECAF_NOINLINE
EdDSA keypair scheduling.
decaf_ed448_sign
void DECAF_API_VIS decaf_ed448_sign(uint8_t signature[DECAF_EDDSA_448_SIGNATURE_BYTES], const uint8_t privkey[DECAF_EDDSA_448_PRIVATE_BYTES], const uint8_t pubkey[DECAF_EDDSA_448_PUBLIC_BYTES], const uint8_t *message, size_t message_len, uint8_t prehashed, const uint8_t *context, uint8_t context_len) DECAF_NOINLINE
EdDSA signing.
decaf_ed448_convert_private_key_to_x448
void DECAF_API_VIS decaf_ed448_convert_private_key_to_x448(uint8_t x[DECAF_X448_PRIVATE_BYTES], const uint8_t ed[DECAF_EDDSA_448_PRIVATE_BYTES]) DECAF_NONNULL DECAF_NOINLINE
EdDSA to ECDH private key conversion Using the appropriate hash function, hash the EdDSA private key ...
decaf_ed448_prehash_ctx_t
#define decaf_ed448_prehash_ctx_t
Prehash context, array[1] form.
Definition ed448.h:48
decaf_448_point_mul_by_ratio_and_encode_like_eddsa
void DECAF_API_VIS decaf_448_point_mul_by_ratio_and_encode_like_eddsa(uint8_t enc[DECAF_EDDSA_448_PUBLIC_BYTES], const decaf_448_point_t p) DECAF_NONNULL DECAF_NOINLINE
EdDSA point encoding.
decaf_ed448_prehash_init
void DECAF_API_VIS decaf_ed448_prehash_init(decaf_ed448_prehash_ctx_t hash) DECAF_NOINLINE
Prehash initialization, with contexts if supported.
decaf_ed448_sign_prehash
void DECAF_API_VIS decaf_ed448_sign_prehash(uint8_t signature[DECAF_EDDSA_448_SIGNATURE_BYTES], const uint8_t privkey[DECAF_EDDSA_448_PRIVATE_BYTES], const uint8_t pubkey[DECAF_EDDSA_448_PUBLIC_BYTES], const decaf_ed448_prehash_ctx_t hash, const uint8_t *context, uint8_t context_len) DECAF_NOINLINE
EdDSA signing with prehash.
decaf_ed448_keypair_sign_prehash
void DECAF_API_VIS decaf_ed448_keypair_sign_prehash(uint8_t signature[DECAF_EDDSA_448_SIGNATURE_BYTES], const decaf_eddsa_448_keypair_t keypair, const decaf_ed448_prehash_ctx_t hash, const uint8_t *context, uint8_t context_len) DECAF_NOINLINE
EdDSA signing with prehash.
point_448.h
A group of prime order p, based on Ed448-Goldilocks.
DECAF_X448_PUBLIC_BYTES
#define DECAF_X448_PUBLIC_BYTES
Number of bytes in an x448 public key.
Definition point_448.h:62
decaf_448_point_t
struct decaf_448_point_s decaf_448_point_t[1]
Representation of a point on the elliptic curve.
DECAF_X448_PRIVATE_BYTES
#define DECAF_X448_PRIVATE_BYTES
Number of bytes in an x448 private key.
Definition point_448.h:65
shake.h
SHA2-512.