Rewrite code, but keeping the exact same semantic and behaviourHEADmain

- remove `#ifndef TWEETNACL_H` guard inside `tweetnacl.h`: as headers
  shouldn't include other headers;
- remove `#define sv static void` golfing alias;
- remove `#define FOR(i,n) for (i = 0;i < n;++i)` golfing alias;
- assert that the generated `tweetnacl.o` code is identical to the
  original code, available at `tests/assert-identical.sh`;
- remove all extra definitions from tweetnacl.h;
- rewrite code with the correct indentation, spacing and formatting;
- use C99 constructs over C89 (for loop variable declarations inside
  the parentheses);
- use smaller types on loop variables, mostly `u8` over `int`,
  `i64`, etc.;
- fix the public API;
- add fuzz targets;

1 files changed, 153 insertions, 0 deletions

diff --git a/src/lib.h b/src/lib.h
new file mode 100644
index 0000000..16a9ebd
--- /dev/null
+++ b/src/lib.h
@@ -0,0 +1,153 @@
+enum {
+	crypt_verify_BYTES           = 16,
+
+	crypt_hash_BYTES             = 64,
+
+	crypt_onetimeauth_BYTES      = 16,
+	crypt_onetimeauth_KEYBYTES   = 32,
+
+	crypt_secretbox_KEYBYTES     = 32,
+	crypt_secretbox_NONCEBYTES   = 24,
+	crypt_secretbox_ZEROBYTES    = 32,
+	crypt_secretbox_BOXZEROBYTES = 16,
+
+	crypt_sign_BYTES             = 64,
+	crypt_sign_PUBLICKEYBYTES    = 32,
+	crypt_sign_SECRETKEYBYTES    = 64,
+
+	crypt_box_PUBLICKEYBYTES     = 32,
+	crypt_box_SECRETKEYBYTES     = 32,
+	crypt_box_BEFORENMBYTES      = 32,
+	crypt_box_NONCEBYTES         = 24,
+	crypt_box_ZEROBYTES          = 32,
+	crypt_box_BOXZEROBYTES       = 16,
+};
+
+
+
+int
+random_init(void);
+
+int
+random_destroy(void);
+
+int
+tweetnacl_main(int argc, const char *const *argv);
+
+
+
+bool
+crypt_verify(
+	const unsigned char buffer1[crypt_verify_BYTES],
+	const unsigned char buffer2[crypt_verify_BYTES]
+);
+
+void
+crypt_hash(
+	const unsigned long long length,
+	const unsigned char *data,
+	      unsigned char out[crypt_hash_BYTES]
+);
+
+void
+crypt_onetimeauth(
+	const unsigned long long length,
+	const unsigned char *const data,
+	const unsigned char secret_key[crypt_onetimeauth_KEYBYTES],
+	unsigned char authenticator_out[crypt_onetimeauth_BYTES]
+);
+
+bool
+crypt_onetimeauth_verify(
+	const unsigned char authenticator[crypt_onetimeauth_BYTES],
+	const unsigned char secret_key[crypt_onetimeauth_KEYBYTES],
+	const unsigned long long length,
+	const unsigned char *const data
+);
+
+int
+crypt_secretbox(
+	const unsigned char secret_key[crypt_secretbox_KEYBYTES],
+	const unsigned long long length,
+	const unsigned char *const clear_data,
+	      unsigned char *const cypher_out
+);
+
+int
+crypt_secretbox_open(
+	const unsigned char secret_key[crypt_secretbox_KEYBYTES],
+	const unsigned long long length,
+	const unsigned char *const cypher_data,
+	      unsigned char *const clean_out
+);
+
+void
+crypt_sign_keypair(
+	unsigned char public_key_out[crypt_sign_PUBLICKEYBYTES],
+	unsigned char secret_key_out[crypt_sign_SECRETKEYBYTES]
+);
+
+void
+crypt_sign(
+	const unsigned char secret_key[crypt_sign_SECRETKEYBYTES],
+	const unsigned long long length,
+	const unsigned char *const data,
+	      unsigned long long *const outlen,
+	      unsigned char *const signed_out
+);
+
+int
+crypt_sign_open(
+	const unsigned char public_key[crypt_sign_PUBLICKEYBYTES],
+	const unsigned long long signed_message_length,
+	const unsigned char *const signed_message,
+	      unsigned long long *const inoutlen,
+	      unsigned char *const out
+);
+
+void
+crypt_box_keypair(
+	unsigned char public_key_out[crypt_box_PUBLICKEYBYTES],
+	unsigned char secret_key_out[crypt_box_SECRETKEYBYTES]
+);
+
+int
+crypt_box(
+	const unsigned char receiver_public_key[crypt_box_PUBLICKEYBYTES],
+	const unsigned char sender_secret_key[crypt_box_PUBLICKEYBYTES],
+	const unsigned long long length,
+	const unsigned char *const clear_data,
+	      unsigned char *const cypher_out
+);
+
+int
+crypt_box_open(
+	const unsigned char sender_public_key[crypt_box_PUBLICKEYBYTES],
+	const unsigned char receiver_secret_key[crypt_box_SECRETKEYBYTES],
+	const unsigned long long length,
+	const unsigned char *const cypher_data,
+	      unsigned char *const clear_out
+);
+
+void
+crypt_box_beforenm(
+	const unsigned char public_key[crypt_box_PUBLICKEYBYTES],
+	const unsigned char secret_key[crypt_box_PUBLICKEYBYTES],
+	      unsigned char out[crypt_box_BEFORENMBYTES]
+);
+
+void
+crypt_box_afternm(
+	const unsigned char beforenm_intermediate[crypt_box_BEFORENMBYTES],
+	const unsigned long long length,
+	const unsigned char *const clear_data,
+	      unsigned char *const cypher_out
+);
+
+int
+crypt_box_open_afternm(
+	const unsigned char beforenm_intermediate[crypt_box_BEFORENMBYTES],
+	const unsigned long long length,
+	const unsigned char *const cypher_data,
+	      unsigned char *const clear_out
+);