mir_hmac_sha256 added

git-svn-id: http://svn.miranda-ng.org/main/trunk@16609 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c

4 files changed, 46 insertions, 22 deletions

diff --git a/src/mir_core/src/mir_core.def b/src/mir_core/src/mir_core.def
index 3263fd854b..0ad6544d27 100644
--- a/src/mir_core/src/mir_core.def
+++ b/src/mir_core/src/mir_core.def
@@ -990,3 +990,4 @@ mir_sha256_write @1147
 mir_forkthreadowner @1148

 hex2bin @1149

 hex2binW @1150

+mir_hmac_sha256 @1151

diff --git a/src/mir_core/src/mir_core64.def b/src/mir_core/src/mir_core64.def
index 5fa704f8d9..6cd4c84264 100644
--- a/src/mir_core/src/mir_core64.def
+++ b/src/mir_core/src/mir_core64.def
@@ -990,3 +990,4 @@ mir_sha256_write @1147
 mir_forkthreadowner @1148

 hex2bin @1149

 hex2binW @1150

+mir_hmac_sha256 @1151

diff --git a/src/mir_core/src/sha1.cpp b/src/mir_core/src/sha1.cpp
index 33a85f8a54..bb6955023d 100644
--- a/src/mir_core/src/sha1.cpp
+++ b/src/mir_core/src/sha1.cpp
@@ -94,7 +94,7 @@ MIR_CORE_DLL(void) mir_sha1_init(mir_sha1_ctx *ctx)
 		ctx->W[i] = 0;

 }

 

-MIR_CORE_DLL(void) mir_sha1_append(mir_sha1_ctx *ctx, const BYTE *dataIn, int len)

+MIR_CORE_DLL(void) mir_sha1_append(mir_sha1_ctx *ctx, const BYTE *dataIn, size_t len)

 {

 	/* Read the data into W and process blocks as they get full

 	*/

@@ -145,7 +145,7 @@ MIR_CORE_DLL(void) mir_sha1_finish(mir_sha1_ctx *ctx, BYTE hashout[20])
 	mir_sha1_init(ctx); 

 }

 

-MIR_CORE_DLL(void) mir_sha1_hash(BYTE *dataIn, int len, BYTE hashout[20])

+MIR_CORE_DLL(void) mir_sha1_hash(BYTE *dataIn, size_t len, BYTE hashout[20])

 {

 	mir_sha1_ctx ctx;

 

@@ -158,38 +158,29 @@ MIR_CORE_DLL(void) mir_sha1_hash(BYTE *dataIn, int len, BYTE hashout[20])
 

 MIR_CORE_DLL(void) mir_hmac_sha1(BYTE hashout[MIR_SHA1_HASH_SIZE], const BYTE *key, size_t keylen, const BYTE *text, size_t textlen)

 {

-	const unsigned SHA_BLOCKSIZE = 64;

-

-	BYTE mdkey[MIR_SHA1_HASH_SIZE], k_ipad[SHA_BLOCKSIZE], k_opad[SHA_BLOCKSIZE];

 	mir_sha1_ctx ctx;

+	BYTE usedKey[MIR_SHA_BLOCKSIZE] = { 0 };

 

-	if (keylen > SHA_BLOCKSIZE) {

+	if (keylen > MIR_SHA_BLOCKSIZE) {

 		mir_sha1_init(&ctx);

 		mir_sha1_append(&ctx, key, (int)keylen);

-		mir_sha1_finish(&ctx, mdkey);

-		keylen = 20;

-		key = mdkey;

+		mir_sha1_finish(&ctx, usedKey);

 	}

+	else memcpy(usedKey, key, keylen);

 

-	memcpy(k_ipad, key, keylen);

-	memcpy(k_opad, key, keylen);

-	if (keylen < SHA_BLOCKSIZE) {

-		memset(k_ipad + keylen, 0x36, SHA_BLOCKSIZE - keylen);

-		memset(k_opad + keylen, 0x5c, SHA_BLOCKSIZE - keylen);

-	}

-

-	for (unsigned i = 0; i < keylen; i++) {

-		k_ipad[i] ^= 0x36;

-		k_opad[i] ^= 0x5c;

-	}

+	for (size_t i = 0; i < MIR_SHA_BLOCKSIZE; i++)
+		usedKey[i] ^= 0x36;
 

 	mir_sha1_init(&ctx);

-	mir_sha1_append(&ctx, k_ipad, SHA_BLOCKSIZE);

+	mir_sha1_append(&ctx, usedKey, MIR_SHA_BLOCKSIZE);

 	mir_sha1_append(&ctx, text, (int)textlen);

 	mir_sha1_finish(&ctx, hashout);

 

+	for (size_t i = 0; i < MIR_SHA_BLOCKSIZE; i++)
+		usedKey[i] ^= 0x5C ^ 0x36;
+

 	mir_sha1_init(&ctx);

-	mir_sha1_append(&ctx, k_opad, SHA_BLOCKSIZE);

+	mir_sha1_append(&ctx, usedKey, MIR_SHA_BLOCKSIZE);

 	mir_sha1_append(&ctx, hashout, MIR_SHA1_HASH_SIZE);

 	mir_sha1_finish(&ctx, hashout);

 }

diff --git a/src/mir_core/src/sha256.cpp b/src/mir_core/src/sha256.cpp
index c6641479dd..70f1de0af6 100644
--- a/src/mir_core/src/sha256.cpp
+++ b/src/mir_core/src/sha256.cpp
@@ -287,3 +287,34 @@ MIR_CORE_DLL(void) mir_sha256_hash(const void *dataIn, size_t len, BYTE hashout[
 	mir_sha256_write(&tmp, dataIn, len);

 	mir_sha256_final(&tmp, hashout);

 }

+

+/////////////////////////////////////////////////////////////////////////////////////////

+

+MIR_CORE_DLL(void) mir_hmac_sha256(BYTE hashout[MIR_SHA256_HASH_SIZE], const BYTE *key, size_t keylen, const BYTE *text, size_t textlen)

+{

+	SHA256_CONTEXT ctx;

+	BYTE usedKey[MIR_SHA_BLOCKSIZE] = { 0 };

+

+	if (keylen > MIR_SHA_BLOCKSIZE) {

+		mir_sha256_init(&ctx);

+		mir_sha256_write(&ctx, key, (int)keylen);

+		mir_sha256_final(&ctx, usedKey);

+	}

+	else memcpy(usedKey, key, keylen);

+

+	for (size_t i = 0; i < MIR_SHA_BLOCKSIZE; i++)

+		usedKey[i] ^= 0x36;

+

+	mir_sha256_init(&ctx);

+	mir_sha256_write(&ctx, usedKey, MIR_SHA_BLOCKSIZE);

+	mir_sha256_write(&ctx, text, textlen);

+	mir_sha256_final(&ctx, hashout);

+

+	for (size_t i = 0; i < MIR_SHA_BLOCKSIZE; i++)

+		usedKey[i] ^= 0x5C ^ 0x36;

+

+	mir_sha256_init(&ctx);

+	mir_sha256_write(&ctx, usedKey, MIR_SHA_BLOCKSIZE);

+	mir_sha256_write(&ctx, hashout, MIR_SHA1_HASH_SIZE);

+	mir_sha256_final(&ctx, hashout);

+}