docs

readme.md

@@ -22,37 +22,46 @@ There are no defined types for seeds, signing keys, verifying keys or
 signatures. Instead simple `unsigned char` buffers are used with the following
 sizes:
 
-    unsigned char seed[32]
-    unsigned char signature[64]
-    unsigned char verify_key[32]
-    unsigned char signing_key[64]
+```c
+unsigned char seed[32];
+unsigned char signature[64];
+unsigned char verify_key[32];
+unsigned char signing_key[64];
+```
 
 API
 ---
 
+```c
 int ed25519_create_seed(unsigned char *seed);
-
+```
 Creates a 32 byte random seed in `seed` for key generation. `seed` must be a
 writable 32 byte buffer. Returns 0 on success, and nonzero on failure.
 
+```c
 void ed25519_create_keypair(unsigned char *verify_key, unsigned char *sign_key, const unsigned char *seed);
+```
 
 Creates a new key pair from the given seed. `verify_key` must be a writable 32
 byte buffer, `sign_key` must be a writable 64 byte buffer and `seed` must be a
-32 byte buffer.
 
+32 byte buffer.
+```c
 void ed25519_sign(unsigned char *signature,
                  const unsigned char *message, size_t message_len,
                  const unsigned char *sign_key);
+```
 
 Creates a signature of the given message with `sign_key`. `signature` must be
 a writable 64 byte buffer. `message` must have at least `message_len` bytes to
 be read. `sign_key` must be a 64 byte signing key generated by
 `ed25519_create_keypair`.
 
+```c
 int ed25519_verify(const unsigned char *signature,
                    const unsigned char *message, size_t message_len,
                    const unsigned char *verify_key);
+```
 
 Verifies the signature on the given message using verify_key. `signature` must be
 a readable 64 byte buffer. `message` must have at least `message_len` bytes to
@@ -61,6 +70,7 @@ be read. `sign_key` must be a 32 byte verifying key generated by
 
 Example
 -------
+```c
 unsigned char seed[32], sign_key[64], verify_key[32], signature[64];
 const unsigned char message[] = "TEST MESSAGE";
 
@@ -81,3 +91,4 @@ Example
 } else {
     printf("valid signature\n");
 }
+```