NAME

-crypto_ed25519_sign_init_first_pass, - crypto_ed25519_sign_update, - crypto_ed25519_sign_final, - crypto_ed25519_sign_init_second_pass, - crypto_ed25519_check_init, - crypto_ed25519_check_update, - crypto_ed25519_check_final — - incremental public key signatures -

SYNOPSIS

-#include - <monocypher-ed25519.h> -

-void -
-crypto_ed25519_sign_init_first_pass(crypto_ed25519_sign_ctx - *ctx, const uint8_t secret_key[32], - const uint8_t public_key[32]); -

-void -
-crypto_ed25519_sign_update(crypto_ed25519_sign_ctx - *ctx, const uint8_t *message, - size_t message_size); -

-void -
-crypto_ed25519_sign_final(crypto_ed25519_sign_ctx - *ctx, uint8_t signature[64]); -

-void -
-crypto_ed25519_sign_init_second_pass(crypto_ed25519_sign_ctx - *ctx); -

-void -
-crypto_ed25519_check_init(crypto_ed25519_check_ctx - *ctx, const uint8_t signature[64], - const uint8_t public_key[32]); -

-void -
-crypto_ed25519_check_update(crypto_ed25519_check_ctx - *ctx, const uint8_t *message, - size_t message_size); -

-int -
-crypto_ed25519_check_final(crypto_ed25519_check_ctx - *ctx); -

DESCRIPTION

-These functions are variants of - crypto_ed25519_sign(3monocypher) - and - crypto_ed25519_check(3monocypher). - Prefer those simpler functions if possible. -

-These functions provide Ed25519 public key signatures and verification with - SHA-512 as the underlying hash function; they are interoperable with other - Ed25519 implementations. If you have no interoperability requirements, prefer - crypto_sign(3monocypher). -

-The arguments, security considerations and semantics are the same as those - described in - crypto_sign_init_first_pass(3monocypher) - and - crypto_sign(3monocypher). -

RETURN - VALUES

-crypto_ed25519_sign_init_first_pass(), - crypto_ed25519_sign_init_second_pass(), - crypto_ed25519_sign_update(), - crypto_ed25519_sign_final(), - crypto_ed25519_check_init() and - crypto_ed25519_check_update() return nothing. -

-crypto_ed25519_check_final() returns 0 for - legitimate messages and -1 for forgeries. -

SEE - ALSO

-crypto_blake2b(3monocypher), - crypto_key_exchange(3monocypher), - crypto_lock(3monocypher), - crypto_ed25519_sign(3monocypher), - crypto_sign(3monocypher), - crypto_sign_init_first_pass(3monocypher), - crypto_sha512(3monocypher), - crypto_wipe(3monocypher), - intro(3monocypher) -

STANDARDS

-These functions implement Ed25519 as described in RFC 8032. -

HISTORY

-The crypto_ed25519_sign_init_first_pass(), - crypto_ed25519_sign_update(), - crypto_ed25519_sign_final(), - crypto_ed25519_sign_init_second_pass(), - crypto_ed25519_check_init(), - crypto_ed25519_check_update(), and - crypto_ed25519_check_final() functions first - appeared in Monocypher 3.0.0. They replace recompilation of Monocypher with - the ED25519_SHA512 preprocessor - definition.