* ext/digest: Merge from trunk; metadata location changed,

  Digest::Base#reset() added, Digest::Base#equal() changed, and
  digest/hmac added with some modifications for ruby 1.8.


git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_8@11137 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

3 files changed, 5 insertions, 27 deletions

diff --git a/ext/digest/sha2/sha2.c b/ext/digest/sha2/sha2.c
index 1dd69c4e8..aca9ee926 100644
--- a/ext/digest/sha2/sha2.c
+++ b/ext/digest/sha2/sha2.c
@@ -578,12 +578,6 @@ void SHA256_Finish(SHA256_CTX* context, sha2_byte digest[]) {
 	usedspace = 0;
 }
 
-int SHA256_Equal(SHA256_CTX* pctx1, SHA256_CTX* pctx2) {
-	return pctx1->bitcount == pctx2->bitcount
-		&& memcmp(pctx1->state, pctx2->state, sizeof(pctx1->state)) == 0
-		&& memcmp(pctx1->buffer, pctx2->buffer, sizeof(pctx1->buffer)) == 0;
-}
-
 /*** SHA-512: *********************************************************/
 void SHA512_Init(SHA512_CTX* context) {
 	if (context == (SHA512_CTX*)0) {
@@ -881,12 +875,6 @@ void SHA512_Finish(SHA512_CTX* context, sha2_byte digest[]) {
 	MEMSET_BZERO(context, sizeof(SHA512_CTX));
 }
 
-int SHA512_Equal(SHA512_CTX* pctx1, SHA512_CTX* pctx2) {
-	return memcmp(pctx1->bitcount, pctx2->bitcount, sizeof(pctx1->bitcount)) == 0
-		&& memcmp(pctx1->state, pctx2->state, sizeof(pctx1->state)) == 0
-		&& memcmp(pctx1->buffer, pctx2->buffer, sizeof(pctx1->buffer)) == 0;
-}
-
 /*** SHA-384: *********************************************************/
 void SHA384_Init(SHA384_CTX* context) {
 	if (context == (SHA384_CTX*)0) {
@@ -929,9 +917,3 @@ void SHA384_Finish(SHA384_CTX* context, sha2_byte digest[]) {
 	/* Zero out state data */
 	MEMSET_BZERO(context, sizeof(SHA384_CTX));
 }
-
-int SHA384_Equal(SHA384_CTX* pctx1, SHA384_CTX* pctx2) {
-	return memcmp(pctx1->bitcount, pctx2->bitcount, sizeof(pctx1->bitcount)) == 0
-		&& memcmp(pctx1->state, pctx2->state, sizeof(pctx1->state)) == 0
-		&& memcmp(pctx1->buffer, pctx2->buffer, sizeof(pctx1->buffer)) == 0;
-}
diff --git a/ext/digest/sha2/sha2.h b/ext/digest/sha2/sha2.h
index db72cbbd3..917d415b7 100644
--- a/ext/digest/sha2/sha2.h
+++ b/ext/digest/sha2/sha2.h
@@ -78,34 +78,28 @@ typedef SHA512_CTX SHA384_CTX;
 #define SHA256_Init		rb_Digest_SHA256_Init
 #define SHA256_Update		rb_Digest_SHA256_Update
 #define SHA256_Finish		rb_Digest_SHA256_Finish
-#define SHA256_Equal		rb_Digest_SHA256_Equal
 
 #define SHA384_Init		rb_Digest_SHA384_Init
 #define SHA384_Update		rb_Digest_SHA384_Update
 #define SHA384_Finish		rb_Digest_SHA384_Finish
-#define SHA384_Equal		rb_Digest_SHA384_Equal
 
 #define SHA512_Init		rb_Digest_SHA512_Init
 #define SHA512_Update		rb_Digest_SHA512_Update
 #define SHA512_Finish		rb_Digest_SHA512_Finish
-#define SHA512_Equal		rb_Digest_SHA512_Equal
 #endif
 
 /*** SHA-256/384/512 Function Prototypes ******************************/
 void SHA256_Init _((SHA256_CTX *));
 void SHA256_Update _((SHA256_CTX*, const uint8_t*, size_t));
 void SHA256_Finish _((SHA256_CTX*, uint8_t[SHA256_DIGEST_LENGTH]));
-int SHA256_Equal _((SHA256_CTX*, SHA256_CTX*));
 
 void SHA384_Init _((SHA384_CTX*));
 void SHA384_Update _((SHA384_CTX*, const uint8_t*, size_t));
 void SHA384_Finish _((SHA384_CTX*, uint8_t[SHA384_DIGEST_LENGTH]));
-int SHA384_Equal _((SHA384_CTX*, SHA384_CTX*));
 
 void SHA512_Init _((SHA512_CTX*));
 void SHA512_Update _((SHA512_CTX*, const uint8_t*, size_t));
 void SHA512_Finish _((SHA512_CTX*, uint8_t[SHA512_DIGEST_LENGTH]));
-int SHA512_Equal _((SHA512_CTX*, SHA512_CTX*));
 
 #ifdef	__cplusplus
 }
diff --git a/ext/digest/sha2/sha2init.c b/ext/digest/sha2/sha2init.c
index 9484f2a7b..c5a16ab4d 100644
--- a/ext/digest/sha2/sha2init.c
+++ b/ext/digest/sha2/sha2init.c
@@ -13,7 +13,6 @@ static algo_t sha##bitlen = { \
     (hash_init_func_t)SHA##bitlen##_Init, \
     (hash_update_func_t)SHA##bitlen##_Update, \
     (hash_finish_func_t)SHA##bitlen##_Finish, \
-    (hash_equal_func_t)SHA##bitlen##_Equal, \
 };
 
 FOREACH_BITLEN(DEFINE_ALGO_METADATA)
@@ -39,8 +38,11 @@ Init_sha2()
 #define DEFINE_ALGO_CLASS(bitlen) \
     cDigest_SHA##bitlen = rb_define_class_under(mDigest, "SHA" #bitlen, cDigest_Base); \
 \
-    rb_cvar_set(cDigest_SHA##bitlen, id_metadata, \
-		Data_Wrap_Struct(rb_cObject, 0, 0, &sha##bitlen), Qtrue);
+    rb_define_const(cDigest_SHA##bitlen, "DIGEST_LENGTH", INT2NUM(SHA##bitlen##_DIGEST_LENGTH)); \
+    rb_define_const(cDigest_SHA##bitlen, "BLOCK_LENGTH",  INT2NUM(SHA##bitlen##_BLOCK_LENGTH)); \
+\
+    rb_ivar_set(cDigest_SHA##bitlen, id_metadata, \
+      Data_Wrap_Struct(rb_cObject, 0, 0, &sha##bitlen));
 
     FOREACH_BITLEN(DEFINE_ALGO_CLASS)
 }