crypto.c File Reference

Stub implementations for crypto-related functions in WASM build. More...

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Functions
asciichat_error_t	ed25519_verify_signature (const uint8_t public_key[32], const uint8_t *message, size_t message_len, const uint8_t signature[64], const char *gpg_key_id)
asciichat_error_t	ed25519_sign_message (const private_key_t *key, const uint8_t *message, size_t message_len, uint8_t signature[64])
asciichat_error_t	parse_public_keys (const char *input, public_key_t *keys_out, size_t *num_keys, size_t max_keys)
asciichat_error_t	check_known_host (const char *server_ip, uint16_t port, const uint8_t server_key[32])
asciichat_error_t	check_known_host_no_identity (const char *server_ip, uint16_t port)
bool	display_mitm_warning (const char *server_ip, uint16_t port, const uint8_t expected_key[32], const uint8_t received_key[32])
bool	prompt_unknown_host (const char *server_ip, uint16_t port, const uint8_t server_key[32])
bool	prompt_unknown_host_no_identity (const char *server_ip, uint16_t port)
asciichat_error_t	add_known_host (const char *server_ip, uint16_t port, const uint8_t server_key[32])
const char *	get_known_hosts_path (void)
asciichat_error_t	prompt_password (const char *prompt_text, char *password_out, size_t password_max_len)

Detailed Description

Stub implementations for crypto-related functions in WASM build.

Definition in file lib/platform/wasm/stubs/crypto.c.

Function Documentation

add_known_host()

asciichat_error_t add_known_host	(	const char *	server_ip,
		uint16_t	port,
		const uint8_t	server_key[32]
	)

Definition at line 61 of file lib/platform/wasm/stubs/crypto.c.

                                                                                                     {
  // Known hosts file updates not supported in WASM
  return ASCIICHAT_OK;
}

check_known_host()

asciichat_error_t check_known_host	(	const char *	server_ip,
		uint16_t	port,
		const uint8_t	server_key[32]
	)

Definition at line 35 of file lib/platform/wasm/stubs/crypto.c.

                                                                                                       {
  // Known hosts checking not supported in WASM
  return ASCIICHAT_OK;
}

check_known_host_no_identity()

asciichat_error_t check_known_host_no_identity	(	const char *	server_ip,
		uint16_t	port
	)

Definition at line 40 of file lib/platform/wasm/stubs/crypto.c.

                                                                                     {
  // Known hosts checking not supported in WASM
  return ASCIICHAT_OK;
}

display_mitm_warning()

bool display_mitm_warning	(	const char *	server_ip,
		uint16_t	port,
		const uint8_t	expected_key[32],
		const uint8_t	received_key[32]
	)

Definition at line 45 of file lib/platform/wasm/stubs/crypto.c.

                                                          {
  // MITM warnings not displayed in WASM (browser console log instead)
  return false;
}

ed25519_sign_message()

asciichat_error_t ed25519_sign_message	(	const private_key_t *	key,
		const uint8_t *	message,
		size_t	message_len,
		uint8_t	signature[64]
	)

Definition at line 22 of file lib/platform/wasm/stubs/crypto.c.

                                                              {
  // Client authentication not supported in WASM (no client keys)
  return SET_ERRNO(ERROR_NOT_SUPPORTED, "Ed25519 signing not supported in WASM");
}

ed25519_verify_signature()

asciichat_error_t ed25519_verify_signature	(	const uint8_t	public_key[32],
		const uint8_t *	message,
		size_t	message_len,
		const uint8_t	signature[64],
		const char *	gpg_key_id
	)

Definition at line 16 of file lib/platform/wasm/stubs/crypto.c.

                                                                                                {
  // Server identity verification not supported in WASM (no known_hosts file)
  return ASCIICHAT_OK;
}

get_known_hosts_path()

const char * get_known_hosts_path

(

void

)

Definition at line 66 of file lib/platform/wasm/stubs/crypto.c.

                                       {
  // No filesystem in WASM
  return NULL;
}

parse_public_keys()

asciichat_error_t parse_public_keys	(	const char *	input,
		public_key_t *	keys_out,
		size_t *	num_keys,
		size_t	max_keys
	)

Definition at line 29 of file lib/platform/wasm/stubs/crypto.c.

                                                                                                                  {
  // Key file parsing not supported in WASM
  return SET_ERRNO(ERROR_NOT_SUPPORTED, "Public key file parsing not supported in WASM");
}

prompt_password()

asciichat_error_t prompt_password	(	const char *	prompt_text,
		char *	password_out,
		size_t	password_max_len
	)

Definition at line 72 of file lib/platform/wasm/stubs/crypto.c.

                                                                                                        {
  // Password prompts not supported in WASM
  return SET_ERRNO(ERROR_NOT_SUPPORTED, "Password prompts not supported in WASM");
}

Referenced by crypto_handshake_client_auth_response().

prompt_unknown_host()

bool prompt_unknown_host	(	const char *	server_ip,
		uint16_t	port,
		const uint8_t	server_key[32]
	)

Definition at line 51 of file lib/platform/wasm/stubs/crypto.c.

                                                                                             {
  // No interactive prompts in WASM - auto-accept
  return true;
}

prompt_unknown_host_no_identity()

bool prompt_unknown_host_no_identity	(	const char *	server_ip,
		uint16_t	port
	)

Definition at line 56 of file lib/platform/wasm/stubs/crypto.c.

                                                                           {
  // No interactive prompts in WASM - auto-accept
  return true;
}