Renamed pkcs1_signature_prefix to _pkcs1_signature_prefix.

ChangeLog

 2012-06-25  Niels Möller  <nisse@lysator.liu.se>
 
+	* pkcs1.c (_pkcs1_signature_prefix): Renamed function, adding a
+	leading underscore. Updated all callers.
+
 	* bignum-next-prime.c (nettle_next_prime): Consistently use the
 	type nettle_random_func * (rather then just nettle_random_func)
 	when passing the function pointer as argument. Similar change for

NEWS

@@ -4,9 +4,11 @@ NEWS for the 2.5 release
 	and MacOS. There are also a few new features.
 	
 	* Warning: The undocumented, internal, function
-	  pkcs1_signature_prefix is changed. Since this is an internal
-	  function, this is not considered a change of ABI or API.
-	  Programs explicitly using this function will break.
+	  pkcs1_signature_prefix has been renamed to
+	  _pkcs1_signature_prefix, and with slightly different
+	  behavior. Since this is an internal function, this is not
+	  considered a change of ABI or API. Programs explicitly using
+	  this function will break.
 
 	New features:
 

pkcs1-rsa-digest.c

@@ -38,7 +38,7 @@ pkcs1_rsa_digest_encode(mpz_t m, unsigned key_size,
   TMP_DECL(em, uint8_t, NETTLE_MAX_BIGNUM_SIZE);
   TMP_ALLOC(em, key_size);
 
-  if (pkcs1_signature_prefix(key_size, em,
+  if (_pkcs1_signature_prefix(key_size, em,
 			      di_length, digest_info, 0))
     {
       nettle_mpz_set_str_256_u(m, key_size, em);

pkcs1-rsa-md5.c

@@ -68,7 +68,7 @@ pkcs1_rsa_md5_encode(mpz_t m, unsigned key_size, struct md5_ctx *hash)
   TMP_DECL(em, uint8_t, NETTLE_MAX_BIGNUM_SIZE);
   TMP_ALLOC(em, key_size);
 
-  p = pkcs1_signature_prefix(key_size, em,
+  p = _pkcs1_signature_prefix(key_size, em,
 			      sizeof(md5_prefix),
 			      md5_prefix,
 			      MD5_DIGEST_SIZE);
@@ -89,7 +89,7 @@ pkcs1_rsa_md5_encode_digest(mpz_t m, unsigned key_size, const uint8_t *digest)
   TMP_DECL(em, uint8_t, NETTLE_MAX_BIGNUM_SIZE);
   TMP_ALLOC(em, key_size);
 
-  p = pkcs1_signature_prefix(key_size, em,
+  p = _pkcs1_signature_prefix(key_size, em,
 			      sizeof(md5_prefix),
 			      md5_prefix,
 			      MD5_DIGEST_SIZE);

pkcs1-rsa-sha1.c

@@ -68,7 +68,7 @@ pkcs1_rsa_sha1_encode(mpz_t m, unsigned key_size, struct sha1_ctx *hash)
   TMP_DECL(em, uint8_t, NETTLE_MAX_BIGNUM_SIZE);
   TMP_ALLOC(em, key_size);
 
-  p = pkcs1_signature_prefix(key_size, em,
+  p = _pkcs1_signature_prefix(key_size, em,
 			      sizeof(sha1_prefix),
 			      sha1_prefix,
 			      SHA1_DIGEST_SIZE);
@@ -89,7 +89,7 @@ pkcs1_rsa_sha1_encode_digest(mpz_t m, unsigned key_size, const uint8_t *digest)
   TMP_DECL(em, uint8_t, NETTLE_MAX_BIGNUM_SIZE);
   TMP_ALLOC(em, key_size);
 
-  p = pkcs1_signature_prefix(key_size, em,
+  p = _pkcs1_signature_prefix(key_size, em,
 			      sizeof(sha1_prefix),
 			      sha1_prefix,
 			      SHA1_DIGEST_SIZE);

pkcs1-rsa-sha256.c

@@ -66,7 +66,7 @@ pkcs1_rsa_sha256_encode(mpz_t m, unsigned key_size, struct sha256_ctx *hash)
   TMP_DECL(em, uint8_t, NETTLE_MAX_BIGNUM_SIZE);
   TMP_ALLOC(em, key_size);
 
-  p = pkcs1_signature_prefix(key_size, em,
+  p = _pkcs1_signature_prefix(key_size, em,
 			      sizeof(sha256_prefix),
 			      sha256_prefix,
 			      SHA256_DIGEST_SIZE);
@@ -87,7 +87,7 @@ pkcs1_rsa_sha256_encode_digest(mpz_t m, unsigned key_size, const uint8_t *digest
   TMP_DECL(em, uint8_t, NETTLE_MAX_BIGNUM_SIZE);
   TMP_ALLOC(em, key_size);
 
-  p = pkcs1_signature_prefix(key_size, em,
+  p = _pkcs1_signature_prefix(key_size, em,
 			      sizeof(sha256_prefix),
 			      sha256_prefix,
 			      SHA256_DIGEST_SIZE);

pkcs1-rsa-sha512.c

@@ -66,7 +66,7 @@ pkcs1_rsa_sha512_encode(mpz_t m, unsigned key_size, struct sha512_ctx *hash)
   TMP_DECL(em, uint8_t, NETTLE_MAX_BIGNUM_SIZE);
   TMP_ALLOC(em, key_size);
 
-  p = pkcs1_signature_prefix(key_size, em,
+  p = _pkcs1_signature_prefix(key_size, em,
 			      sizeof(sha512_prefix),
 			      sha512_prefix,
 			      SHA512_DIGEST_SIZE);
@@ -87,7 +87,7 @@ pkcs1_rsa_sha512_encode_digest(mpz_t m, unsigned key_size, const uint8_t *digest
   TMP_DECL(em, uint8_t, NETTLE_MAX_BIGNUM_SIZE);
   TMP_ALLOC(em, key_size);
 
-  p = pkcs1_signature_prefix(key_size, em,
+  p = _pkcs1_signature_prefix(key_size, em,
 			      sizeof(sha512_prefix),
 			      sha512_prefix,
 			      SHA512_DIGEST_SIZE);

pkcs1.c

@@ -40,7 +40,7 @@
  * total size equals the octet size of n.
  */
 uint8_t *
-pkcs1_signature_prefix(unsigned key_size,
+_pkcs1_signature_prefix(unsigned key_size,
 			uint8_t *buffer,
 			unsigned id_size,
 			const uint8_t *id,

pkcs1.h

@@ -34,7 +34,7 @@ extern "C" {
 #endif
 
 /* Name mangling */
-#define pkcs1_signature_prefix nettle_pkcs1_signature_prefix
+#define _pkcs1_signature_prefix _nettle_pkcs1_signature_prefix
 #define pkcs1_rsa_digest_encode nettle_pkcs1_rsa_digest_encode
 #define pkcs1_rsa_md5_encode nettle_pkcs1_rsa_md5_encode
 #define pkcs1_rsa_md5_encode_digest nettle_pkcs1_rsa_md5_encode_digest
@@ -53,7 +53,7 @@ struct sha256_ctx;
 struct sha512_ctx;
 
 uint8_t *
-pkcs1_signature_prefix(unsigned key_size,
+_pkcs1_signature_prefix(unsigned key_size,
 			uint8_t *buffer,
 			unsigned id_size,
 			const uint8_t *id,

testsuite/pkcs1-test.c

@@ -9,7 +9,7 @@ test_main(void)
   uint8_t expected[16] = { 0,    1, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 			   0xff, 0xff, 0xff, 0xff, 0,    'a',  'b',  'c' };
 
-  pkcs1_signature_prefix(sizeof(buffer), buffer,
+  _pkcs1_signature_prefix(sizeof(buffer), buffer,
 			  3, "abc", 0);
 
   ASSERT(MEMEQ(sizeof(buffer), buffer, expected));