diff options
author | Jason Cooper <jason@lakedaemon.net> | 2014-03-24 01:49:11 +0000 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-04-18 15:47:42 -0700 |
commit | 60eb817520c949543bcdccce2242c1b73372a45b (patch) | |
tree | f2ac68c8f39f4a2bc7ecc44a3bb16679d606cd07 /drivers/staging/skein | |
parent | 06a620f09ec428796aa490547d743203ffc30e1d (diff) |
staging: crypto: skein: cleanup >80 character lines
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/skein')
-rw-r--r-- | drivers/staging/skein/include/skein.h | 175 | ||||
-rw-r--r-- | drivers/staging/skein/include/threefishApi.h | 16 | ||||
-rw-r--r-- | drivers/staging/skein/skein.c | 586 | ||||
-rw-r--r-- | drivers/staging/skein/skeinApi.c | 58 | ||||
-rw-r--r-- | drivers/staging/skein/skeinBlockNo3F.c | 27 | ||||
-rw-r--r-- | drivers/staging/skein/skein_block.c | 427 | ||||
-rw-r--r-- | drivers/staging/skein/threefish1024Block.c | 6078 | ||||
-rw-r--r-- | drivers/staging/skein/threefish256Block.c | 1398 | ||||
-rw-r--r-- | drivers/staging/skein/threefish512Block.c | 2735 | ||||
-rw-r--r-- | drivers/staging/skein/threefishApi.c | 13 |
10 files changed, 8862 insertions, 2651 deletions
diff --git a/drivers/staging/skein/include/skein.h b/drivers/staging/skein/include/skein.h index dd9a210cf5dd..f92dc40711d1 100644 --- a/drivers/staging/skein/include/skein.h +++ b/drivers/staging/skein/include/skein.h @@ -39,12 +39,12 @@ enum { - SKEIN_SUCCESS = 0, /* return codes from Skein calls */ + SKEIN_SUCCESS = 0, /* return codes from Skein calls */ SKEIN_FAIL = 1, SKEIN_BAD_HASHLEN = 2 }; -#define SKEIN_MODIFIER_WORDS (2) /* number of modifier (tweak) words */ +#define SKEIN_MODIFIER_WORDS (2) /* number of modifier (tweak) words */ #define SKEIN_256_STATE_WORDS (4) #define SKEIN_512_STATE_WORDS (8) @@ -65,30 +65,30 @@ enum struct skein_ctx_hdr { - size_t hashBitLen; /* size of hash result, in bits */ - size_t bCnt; /* current byte count in buffer b[] */ - u64 T[SKEIN_MODIFIER_WORDS]; /* tweak words: T[0]=byte cnt, T[1]=flags */ + size_t hashBitLen; /* size of hash result, in bits */ + size_t bCnt; /* current byte count in buffer b[] */ + u64 T[SKEIN_MODIFIER_WORDS]; /* tweak: T[0]=byte cnt, T[1]=flags */ }; -struct skein_256_ctx /* 256-bit Skein hash context structure */ +struct skein_256_ctx /* 256-bit Skein hash context structure */ { - struct skein_ctx_hdr h; /* common header context variables */ - u64 X[SKEIN_256_STATE_WORDS]; /* chaining variables */ - u8 b[SKEIN_256_BLOCK_BYTES]; /* partial block buffer (8-byte aligned) */ + struct skein_ctx_hdr h; /* common header context variables */ + u64 X[SKEIN_256_STATE_WORDS]; /* chaining variables */ + u8 b[SKEIN_256_BLOCK_BYTES]; /* partial block buf (8-byte aligned) */ }; -struct skein_512_ctx /* 512-bit Skein hash context structure */ +struct skein_512_ctx /* 512-bit Skein hash context structure */ { - struct skein_ctx_hdr h; /* common header context variables */ - u64 X[SKEIN_512_STATE_WORDS]; /* chaining variables */ - u8 b[SKEIN_512_BLOCK_BYTES]; /* partial block buffer (8-byte aligned) */ + struct skein_ctx_hdr h; /* common header context variables */ + u64 X[SKEIN_512_STATE_WORDS]; /* chaining variables */ + u8 b[SKEIN_512_BLOCK_BYTES]; /* partial block buf (8-byte aligned) */ }; -struct skein1024_ctx /* 1024-bit Skein hash context structure */ +struct skein1024_ctx /* 1024-bit Skein hash context structure */ { - struct skein_ctx_hdr h; /* common header context variables */ - u64 X[SKEIN1024_STATE_WORDS]; /* chaining variables */ - u8 b[SKEIN1024_BLOCK_BYTES]; /* partial block buffer (8-byte aligned) */ + struct skein_ctx_hdr h; /* common header context variables */ + u64 X[SKEIN1024_STATE_WORDS]; /* chaining variables */ + u8 b[SKEIN1024_BLOCK_BYTES]; /* partial block buf (8-byte aligned) */ }; /* Skein APIs for (incremental) "straight hashing" */ @@ -96,9 +96,12 @@ int Skein_256_Init(struct skein_256_ctx *ctx, size_t hashBitLen); int Skein_512_Init(struct skein_512_ctx *ctx, size_t hashBitLen); int Skein1024_Init(struct skein1024_ctx *ctx, size_t hashBitLen); -int Skein_256_Update(struct skein_256_ctx *ctx, const u8 *msg, size_t msgByteCnt); -int Skein_512_Update(struct skein_512_ctx *ctx, const u8 *msg, size_t msgByteCnt); -int Skein1024_Update(struct skein1024_ctx *ctx, const u8 *msg, size_t msgByteCnt); +int Skein_256_Update(struct skein_256_ctx *ctx, const u8 *msg, + size_t msgByteCnt); +int Skein_512_Update(struct skein_512_ctx *ctx, const u8 *msg, + size_t msgByteCnt); +int Skein1024_Update(struct skein1024_ctx *ctx, const u8 *msg, + size_t msgByteCnt); int Skein_256_Final(struct skein_256_ctx *ctx, u8 *hashVal); int Skein_512_Final(struct skein_512_ctx *ctx, u8 *hashVal); @@ -118,9 +121,12 @@ int Skein1024_Final(struct skein1024_ctx *ctx, u8 *hashVal); ** to precompute the MAC IV, then a copy of the context saved and ** reused for each new MAC computation. **/ -int Skein_256_InitExt(struct skein_256_ctx *ctx, size_t hashBitLen, u64 treeInfo, const u8 *key, size_t keyBytes); -int Skein_512_InitExt(struct skein_512_ctx *ctx, size_t hashBitLen, u64 treeInfo, const u8 *key, size_t keyBytes); -int Skein1024_InitExt(struct skein1024_ctx *ctx, size_t hashBitLen, u64 treeInfo, const u8 *key, size_t keyBytes); +int Skein_256_InitExt(struct skein_256_ctx *ctx, size_t hashBitLen, + u64 treeInfo, const u8 *key, size_t keyBytes); +int Skein_512_InitExt(struct skein_512_ctx *ctx, size_t hashBitLen, + u64 treeInfo, const u8 *key, size_t keyBytes); +int Skein1024_InitExt(struct skein1024_ctx *ctx, size_t hashBitLen, + u64 treeInfo, const u8 *key, size_t keyBytes); /* ** Skein APIs for MAC and tree hash: @@ -149,13 +155,13 @@ int Skein1024_Output(struct skein1024_ctx *ctx, u8 *hashVal); ******************************************************************/ /* tweak word T[1]: bit field starting positions */ -#define SKEIN_T1_BIT(BIT) ((BIT) - 64) /* offset 64 because it's the second word */ +#define SKEIN_T1_BIT(BIT) ((BIT) - 64) /* second word */ -#define SKEIN_T1_POS_TREE_LVL SKEIN_T1_BIT(112) /* bits 112..118: level in hash tree */ -#define SKEIN_T1_POS_BIT_PAD SKEIN_T1_BIT(119) /* bit 119 : partial final input byte */ -#define SKEIN_T1_POS_BLK_TYPE SKEIN_T1_BIT(120) /* bits 120..125: type field */ -#define SKEIN_T1_POS_FIRST SKEIN_T1_BIT(126) /* bits 126 : first block flag */ -#define SKEIN_T1_POS_FINAL SKEIN_T1_BIT(127) /* bit 127 : final block flag */ +#define SKEIN_T1_POS_TREE_LVL SKEIN_T1_BIT(112) /* 112..118 hash tree level */ +#define SKEIN_T1_POS_BIT_PAD SKEIN_T1_BIT(119) /* 119 part. final in byte */ +#define SKEIN_T1_POS_BLK_TYPE SKEIN_T1_BIT(120) /* 120..125 type field `*/ +#define SKEIN_T1_POS_FIRST SKEIN_T1_BIT(126) /* 126 first blk flag */ +#define SKEIN_T1_POS_FINAL SKEIN_T1_BIT(127) /* 127 final blk flag */ /* tweak word T[1]: flag bit definition(s) */ #define SKEIN_T1_FLAG_FIRST (((u64) 1) << SKEIN_T1_POS_FIRST) @@ -167,34 +173,37 @@ int Skein1024_Output(struct skein1024_ctx *ctx, u8 *hashVal); #define SKEIN_T1_TREE_LEVEL(n) (((u64) (n)) << SKEIN_T1_POS_TREE_LVL) /* tweak word T[1]: block type field */ -#define SKEIN_BLK_TYPE_KEY (0) /* key, for MAC and KDF */ -#define SKEIN_BLK_TYPE_CFG (4) /* configuration block */ -#define SKEIN_BLK_TYPE_PERS (8) /* personalization string */ -#define SKEIN_BLK_TYPE_PK (12) /* public key (for digital signature hashing) */ -#define SKEIN_BLK_TYPE_KDF (16) /* key identifier for KDF */ -#define SKEIN_BLK_TYPE_NONCE (20) /* nonce for PRNG */ -#define SKEIN_BLK_TYPE_MSG (48) /* message processing */ -#define SKEIN_BLK_TYPE_OUT (63) /* output stage */ -#define SKEIN_BLK_TYPE_MASK (63) /* bit field mask */ - -#define SKEIN_T1_BLK_TYPE(T) (((u64) (SKEIN_BLK_TYPE_##T)) << SKEIN_T1_POS_BLK_TYPE) -#define SKEIN_T1_BLK_TYPE_KEY SKEIN_T1_BLK_TYPE(KEY) /* key, for MAC and KDF */ -#define SKEIN_T1_BLK_TYPE_CFG SKEIN_T1_BLK_TYPE(CFG) /* configuration block */ -#define SKEIN_T1_BLK_TYPE_PERS SKEIN_T1_BLK_TYPE(PERS) /* personalization string */ -#define SKEIN_T1_BLK_TYPE_PK SKEIN_T1_BLK_TYPE(PK) /* public key (for digital signature hashing) */ -#define SKEIN_T1_BLK_TYPE_KDF SKEIN_T1_BLK_TYPE(KDF) /* key identifier for KDF */ +#define SKEIN_BLK_TYPE_KEY (0) /* key, for MAC and KDF */ +#define SKEIN_BLK_TYPE_CFG (4) /* configuration block */ +#define SKEIN_BLK_TYPE_PERS (8) /* personalization string */ +#define SKEIN_BLK_TYPE_PK (12) /* pubkey (for digital sigs) */ +#define SKEIN_BLK_TYPE_KDF (16) /* key identifier for KDF */ +#define SKEIN_BLK_TYPE_NONCE (20) /* nonce for PRNG */ +#define SKEIN_BLK_TYPE_MSG (48) /* message processing */ +#define SKEIN_BLK_TYPE_OUT (63) /* output stage */ +#define SKEIN_BLK_TYPE_MASK (63) /* bit field mask */ + +#define SKEIN_T1_BLK_TYPE(T) (((u64) (SKEIN_BLK_TYPE_##T)) << \ + SKEIN_T1_POS_BLK_TYPE) +#define SKEIN_T1_BLK_TYPE_KEY SKEIN_T1_BLK_TYPE(KEY) /* for MAC and KDF */ +#define SKEIN_T1_BLK_TYPE_CFG SKEIN_T1_BLK_TYPE(CFG) /* config block */ +#define SKEIN_T1_BLK_TYPE_PERS SKEIN_T1_BLK_TYPE(PERS) /* personalization */ +#define SKEIN_T1_BLK_TYPE_PK SKEIN_T1_BLK_TYPE(PK) /* pubkey (for sigs) */ +#define SKEIN_T1_BLK_TYPE_KDF SKEIN_T1_BLK_TYPE(KDF) /* key ident for KDF */ #define SKEIN_T1_BLK_TYPE_NONCE SKEIN_T1_BLK_TYPE(NONCE)/* nonce for PRNG */ #define SKEIN_T1_BLK_TYPE_MSG SKEIN_T1_BLK_TYPE(MSG) /* message processing */ #define SKEIN_T1_BLK_TYPE_OUT SKEIN_T1_BLK_TYPE(OUT) /* output stage */ #define SKEIN_T1_BLK_TYPE_MASK SKEIN_T1_BLK_TYPE(MASK) /* field bit mask */ -#define SKEIN_T1_BLK_TYPE_CFG_FINAL (SKEIN_T1_BLK_TYPE_CFG | SKEIN_T1_FLAG_FINAL) -#define SKEIN_T1_BLK_TYPE_OUT_FINAL (SKEIN_T1_BLK_TYPE_OUT | SKEIN_T1_FLAG_FINAL) +#define SKEIN_T1_BLK_TYPE_CFG_FINAL (SKEIN_T1_BLK_TYPE_CFG | \ + SKEIN_T1_FLAG_FINAL) +#define SKEIN_T1_BLK_TYPE_OUT_FINAL (SKEIN_T1_BLK_TYPE_OUT | \ + SKEIN_T1_FLAG_FINAL) #define SKEIN_VERSION (1) #ifndef SKEIN_ID_STRING_LE /* allow compile-time personalization */ -#define SKEIN_ID_STRING_LE (0x33414853) /* "SHA3" (little-endian)*/ +#define SKEIN_ID_STRING_LE (0x33414853) /* "SHA3" (little-endian)*/ #endif #define SKEIN_MK_64(hi32, lo32) ((lo32) + (((u64) (hi32)) << 32)) @@ -208,23 +217,29 @@ int Skein1024_Output(struct skein1024_ctx *ctx, u8 *hashVal); #define SKEIN_CFG_TREE_NODE_SIZE_POS (8) #define SKEIN_CFG_TREE_MAX_LEVEL_POS (16) -#define SKEIN_CFG_TREE_LEAF_SIZE_MSK (((u64) 0xFF) << SKEIN_CFG_TREE_LEAF_SIZE_POS) -#define SKEIN_CFG_TREE_NODE_SIZE_MSK (((u64) 0xFF) << SKEIN_CFG_TREE_NODE_SIZE_POS) -#define SKEIN_CFG_TREE_MAX_LEVEL_MSK (((u64) 0xFF) << SKEIN_CFG_TREE_MAX_LEVEL_POS) +#define SKEIN_CFG_TREE_LEAF_SIZE_MSK (((u64)0xFF) << \ + SKEIN_CFG_TREE_LEAF_SIZE_POS) +#define SKEIN_CFG_TREE_NODE_SIZE_MSK (((u64)0xFF) << \ + SKEIN_CFG_TREE_NODE_SIZE_POS) +#define SKEIN_CFG_TREE_MAX_LEVEL_MSK (((u64)0xFF) << \ + SKEIN_CFG_TREE_MAX_LEVEL_POS) #define SKEIN_CFG_TREE_INFO(leaf, node, maxLvl) \ ((((u64)(leaf)) << SKEIN_CFG_TREE_LEAF_SIZE_POS) | \ (((u64)(node)) << SKEIN_CFG_TREE_NODE_SIZE_POS) | \ (((u64)(maxLvl)) << SKEIN_CFG_TREE_MAX_LEVEL_POS)) -#define SKEIN_CFG_TREE_INFO_SEQUENTIAL SKEIN_CFG_TREE_INFO(0, 0, 0) /* use as treeInfo in InitExt() call for sequential processing */ +/* use as treeInfo in InitExt() call for sequential processing */ +#define SKEIN_CFG_TREE_INFO_SEQUENTIAL SKEIN_CFG_TREE_INFO(0, 0, 0) /* ** Skein macros for getting/setting tweak words, etc. ** These are useful for partial input bytes, hash tree init/update, etc. **/ #define Skein_Get_Tweak(ctxPtr, TWK_NUM) ((ctxPtr)->h.T[TWK_NUM]) -#define Skein_Set_Tweak(ctxPtr, TWK_NUM, tVal) {(ctxPtr)->h.T[TWK_NUM] = (tVal); } +#define Skein_Set_Tweak(ctxPtr, TWK_NUM, tVal) { \ + (ctxPtr)->h.T[TWK_NUM] = (tVal); \ + } #define Skein_Get_T0(ctxPtr) Skein_Get_Tweak(ctxPtr, 0) #define Skein_Get_T1(ctxPtr) Skein_Get_Tweak(ctxPtr, 1) @@ -241,14 +256,26 @@ int Skein1024_Output(struct skein1024_ctx *ctx, u8 *hashVal); #define Skein_Set_Type(ctxPtr, BLK_TYPE) \ Skein_Set_T1(ctxPtr, SKEIN_T1_BLK_TYPE_##BLK_TYPE) -/* set up for starting with a new type: h.T[0]=0; h.T[1] = NEW_TYPE; h.bCnt=0; */ -#define Skein_Start_New_Type(ctxPtr, BLK_TYPE) \ - { Skein_Set_T0_T1(ctxPtr, 0, SKEIN_T1_FLAG_FIRST | SKEIN_T1_BLK_TYPE_##BLK_TYPE); (ctxPtr)->h.bCnt = 0; } +/* + * setup for starting with a new type: + * h.T[0]=0; h.T[1] = NEW_TYPE; h.bCnt=0; + */ +#define Skein_Start_New_Type(ctxPtr, BLK_TYPE) { \ + Skein_Set_T0_T1(ctxPtr, 0, SKEIN_T1_FLAG_FIRST | \ + SKEIN_T1_BLK_TYPE_##BLK_TYPE); \ + (ctxPtr)->h.bCnt = 0; \ + } -#define Skein_Clear_First_Flag(hdr) { (hdr).T[1] &= ~SKEIN_T1_FLAG_FIRST; } -#define Skein_Set_Bit_Pad_Flag(hdr) { (hdr).T[1] |= SKEIN_T1_FLAG_BIT_PAD; } +#define Skein_Clear_First_Flag(hdr) { \ + (hdr).T[1] &= ~SKEIN_T1_FLAG_FIRST; \ + } +#define Skein_Set_Bit_Pad_Flag(hdr) { \ + (hdr).T[1] |= SKEIN_T1_FLAG_BIT_PAD; \ + } -#define Skein_Set_Tree_Level(hdr, height) { (hdr).T[1] |= SKEIN_T1_TREE_LEVEL(height); } +#define Skein_Set_Tree_Level(hdr, height) { \ + (hdr).T[1] |= SKEIN_T1_TREE_LEVEL(height); \ + } /***************************************************************** ** "Internal" Skein definitions for debugging and error checking @@ -263,7 +290,7 @@ int Skein1024_Output(struct skein1024_ctx *ctx, u8 *hashVal); #define Skein_Show_Key(bits, ctx, key, keyBytes) #endif -#define Skein_Assert(x, retCode)/* default: ignore all Asserts, for performance */ +#define Skein_Assert(x, retCode)/* ignore all Asserts, for performance */ #define Skein_assert(x) /***************************************************************** @@ -292,21 +319,29 @@ enum R_512_7_0 = 8, R_512_7_1 = 35, R_512_7_2 = 56, R_512_7_3 = 22, /* Skein1024 round rotation constants */ - R1024_0_0 = 24, R1024_0_1 = 13, R1024_0_2 = 8, R1024_0_3 = 47, R1024_0_4 = 8, R1024_0_5 = 17, R1024_0_6 = 22, R1024_0_7 = 37, - R1024_1_0 = 38, R1024_1_1 = 19, R1024_1_2 = 10, R1024_1_3 = 55, R1024_1_4 = 49, R1024_1_5 = 18, R1024_1_6 = 23, R1024_1_7 = 52, - R1024_2_0 = 33, R1024_2_1 = 4, R1024_2_2 = 51, R1024_2_3 = 13, R1024_2_4 = 34, R1024_2_5 = 41, R1024_2_6 = 59, R1024_2_7 = 17, - R1024_3_0 = 5, R1024_3_1 = 20, R1024_3_2 = 48, R1024_3_3 = 41, R1024_3_4 = 47, R1024_3_5 = 28, R1024_3_6 = 16, R1024_3_7 = 25, - R1024_4_0 = 41, R1024_4_1 = 9, R1024_4_2 = 37, R1024_4_3 = 31, R1024_4_4 = 12, R1024_4_5 = 47, R1024_4_6 = 44, R1024_4_7 = 30, - R1024_5_0 = 16, R1024_5_1 = 34, R1024_5_2 = 56, R1024_5_3 = 51, R1024_5_4 = 4, R1024_5_5 = 53, R1024_5_6 = 42, R1024_5_7 = 41, - R1024_6_0 = 31, R1024_6_1 = 44, R1024_6_2 = 47, R1024_6_3 = 46, R1024_6_4 = 19, R1024_6_5 = 42, R1024_6_6 = 44, R1024_6_7 = 25, - R1024_7_0 = 9, R1024_7_1 = 48, R1024_7_2 = 35, R1024_7_3 = 52, R1024_7_4 = 23, R1024_7_5 = 31, R1024_7_6 = 37, R1024_7_7 = 20 + R1024_0_0 = 24, R1024_0_1 = 13, R1024_0_2 = 8, R1024_0_3 = 47, + R1024_0_4 = 8, R1024_0_5 = 17, R1024_0_6 = 22, R1024_0_7 = 37, + R1024_1_0 = 38, R1024_1_1 = 19, R1024_1_2 = 10, R1024_1_3 = 55, + R1024_1_4 = 49, R1024_1_5 = 18, R1024_1_6 = 23, R1024_1_7 = 52, + R1024_2_0 = 33, R1024_2_1 = 4, R1024_2_2 = 51, R1024_2_3 = 13, + R1024_2_4 = 34, R1024_2_5 = 41, R1024_2_6 = 59, R1024_2_7 = 17, + R1024_3_0 = 5, R1024_3_1 = 20, R1024_3_2 = 48, R1024_3_3 = 41, + R1024_3_4 = 47, R1024_3_5 = 28, R1024_3_6 = 16, R1024_3_7 = 25, + R1024_4_0 = 41, R1024_4_1 = 9, R1024_4_2 = 37, R1024_4_3 = 31, + R1024_4_4 = 12, R1024_4_5 = 47, R1024_4_6 = 44, R1024_4_7 = 30, + R1024_5_0 = 16, R1024_5_1 = 34, R1024_5_2 = 56, R1024_5_3 = 51, + R1024_5_4 = 4, R1024_5_5 = 53, R1024_5_6 = 42, R1024_5_7 = 41, + R1024_6_0 = 31, R1024_6_1 = 44, R1024_6_2 = 47, R1024_6_3 = 46, + R1024_6_4 = 19, R1024_6_5 = 42, R1024_6_6 = 44, R1024_6_7 = 25, + R1024_7_0 = 9, R1024_7_1 = 48, R1024_7_2 = 35, R1024_7_3 = 52, + R1024_7_4 = 23, R1024_7_5 = 31, R1024_7_6 = 37, R1024_7_7 = 20 }; #ifndef SKEIN_ROUNDS -#define SKEIN_256_ROUNDS_TOTAL (72) /* number of rounds for the different block sizes */ +#define SKEIN_256_ROUNDS_TOTAL (72) /* # rounds for diff block sizes */ #define SKEIN_512_ROUNDS_TOTAL (72) #define SKEIN1024_ROUNDS_TOTAL (80) -#else /* allow command-line define in range 8*(5..14) */ +#else /* allow command-line define in range 8*(5..14) */ #define SKEIN_256_ROUNDS_TOTAL (8*((((SKEIN_ROUNDS/100) + 5) % 10) + 5)) #define SKEIN_512_ROUNDS_TOTAL (8*((((SKEIN_ROUNDS/10) + 5) % 10) + 5)) #define SKEIN1024_ROUNDS_TOTAL (8*((((SKEIN_ROUNDS) + 5) % 10) + 5)) diff --git a/drivers/staging/skein/include/threefishApi.h b/drivers/staging/skein/include/threefishApi.h index 5d92bbff8c9f..e81675d7eac9 100644 --- a/drivers/staging/skein/include/threefishApi.h +++ b/drivers/staging/skein/include/threefishApi.h @@ -72,7 +72,9 @@ struct threefish_key { * @param tweak * Pointer to the two tweak words (word has 64 bits). */ -void threefishSetKey(struct threefish_key *keyCtx, enum threefish_size stateSize, u64 *keyData, u64 *tweak); +void threefishSetKey(struct threefish_key *keyCtx, + enum threefish_size stateSize, + u64 *keyData, u64 *tweak); /** * Encrypt Threefisch block (bytes). @@ -108,7 +110,8 @@ void threefishEncryptBlockBytes(struct threefish_key *keyCtx, u8 *in, u8 *out); * @param out * Pointer to cipher buffer. */ -void threefishEncryptBlockWords(struct threefish_key *keyCtx, u64 *in, u64 *out); +void threefishEncryptBlockWords(struct threefish_key *keyCtx, u64 *in, + u64 *out); /** * Decrypt Threefisch block (bytes). @@ -144,14 +147,17 @@ void threefishDecryptBlockBytes(struct threefish_key *keyCtx, u8 *in, u8 *out); * @param out * Pointer to plaintext buffer. */ -void threefishDecryptBlockWords(struct threefish_key *keyCtx, u64 *in, u64 *out); +void threefishDecryptBlockWords(struct threefish_key *keyCtx, u64 *in, + u64 *out); void threefishEncrypt256(struct threefish_key *keyCtx, u64 *input, u64 *output); void threefishEncrypt512(struct threefish_key *keyCtx, u64 *input, u64 *output); -void threefishEncrypt1024(struct threefish_key *keyCtx, u64 *input, u64 *output); +void threefishEncrypt1024(struct threefish_key *keyCtx, u64 *input, + u64 *output); void threefishDecrypt256(struct threefish_key *keyCtx, u64 *input, u64 *output); void threefishDecrypt512(struct threefish_key *keyCtx, u64 *input, u64 *output); -void threefishDecrypt1024(struct threefish_key *keyCtx, u64 *input, u64 *output); +void threefishDecrypt1024(struct threefish_key *keyCtx, u64 *input, + u64 *output); /** * @} */ diff --git a/drivers/staging/skein/skein.c b/drivers/staging/skein/skein.c index 3f0f32806181..ed603ee7b170 100644 --- a/drivers/staging/skein/skein.c +++ b/drivers/staging/skein/skein.c @@ -16,9 +16,12 @@ /*****************************************************************/ /* External function to process blkCnt (nonzero) full block(s) of data. */ -void Skein_256_Process_Block(struct skein_256_ctx *ctx, const u8 *blkPtr, size_t blkCnt, size_t byteCntAdd); -void Skein_512_Process_Block(struct skein_512_ctx *ctx, const u8 *blkPtr, size_t blkCnt, size_t byteCntAdd); -void Skein1024_Process_Block(struct skein1024_ctx *ctx, const u8 *blkPtr, size_t blkCnt, size_t byteCntAdd); +void Skein_256_Process_Block(struct skein_256_ctx *ctx, const u8 *blkPtr, + size_t blkCnt, size_t byteCntAdd); +void Skein_512_Process_Block(struct skein_512_ctx *ctx, const u8 *blkPtr, + size_t blkCnt, size_t byteCntAdd); +void Skein1024_Process_Block(struct skein1024_ctx *ctx, const u8 *blkPtr, + size_t blkCnt, size_t byteCntAdd); /*****************************************************************/ /* 256-bit Skein */ @@ -53,20 +56,28 @@ int Skein_256_Init(struct skein_256_ctx *ctx, size_t hashBitLen) break; default: /* here if there is no precomputed IV value available */ - /* build/process the config block, type == CONFIG (could be precomputed) */ - Skein_Start_New_Type(ctx, CFG_FINAL); /* set tweaks: T0=0; T1=CFG | FINAL */ - - cfg.w[0] = Skein_Swap64(SKEIN_SCHEMA_VER); /* set the schema, version */ - cfg.w[1] = Skein_Swap64(hashBitLen); /* hash result length in bits */ + /* + * build/process the config block, type == CONFIG (could be + * precomputed) + */ + /* set tweaks: T0=0; T1=CFG | FINAL */ + Skein_Start_New_Type(ctx, CFG_FINAL); + + /* set the schema, version */ + cfg.w[0] = Skein_Swap64(SKEIN_SCHEMA_VER); + /* hash result length in bits */ + cfg.w[1] = Skein_Swap64(hashBitLen); cfg.w[2] = Skein_Swap64(SKEIN_CFG_TREE_INFO_SEQUENTIAL); - memset(&cfg.w[3], 0, sizeof(cfg) - 3*sizeof(cfg.w[0])); /* zero pad config block */ + /* zero pad config block */ + memset(&cfg.w[3], 0, sizeof(cfg) - 3*sizeof(cfg.w[0])); /* compute the initial chaining values from config block */ - memset(ctx->X, 0, sizeof(ctx->X)); /* zero the chaining variables */ + /* zero the chaining variables */ + memset(ctx->X, 0, sizeof(ctx->X)); Skein_256_Process_Block(ctx, cfg.b, 1, SKEIN_CFG_STR_LEN); break; } - /* The chaining vars ctx->X are now initialized for the given hashBitLen. */ + /* The chaining vars ctx->X are now initialized for hashBitLen. */ /* Set up to process the data message portion of the hash (default) */ Skein_Start_New_Type(ctx, MSG); /* T0=0, T1= MSG type */ @@ -75,42 +86,58 @@ int Skein_256_Init(struct skein_256_ctx *ctx, size_t hashBitLen) /*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/ /* init the context for a MAC and/or tree hash operation */ -/* [identical to Skein_256_Init() when keyBytes == 0 && treeInfo == SKEIN_CFG_TREE_INFO_SEQUENTIAL] */ -int Skein_256_InitExt(struct skein_256_ctx *ctx, size_t hashBitLen, u64 treeInfo, const u8 *key, size_t keyBytes) +/* [identical to Skein_256_Init() when keyBytes == 0 && \ + * treeInfo == SKEIN_CFG_TREE_INFO_SEQUENTIAL] */ +int Skein_256_InitExt(struct skein_256_ctx *ctx, size_t hashBitLen, + u64 treeInfo, const u8 *key, size_t keyBytes) { union { u8 b[SKEIN_256_STATE_BYTES]; u64 w[SKEIN_256_STATE_WORDS]; - } cfg; /* config block */ + } cfg; /* config block */ Skein_Assert(hashBitLen > 0, SKEIN_BAD_HASHLEN); Skein_Assert(keyBytes == 0 || key != NULL, SKEIN_FAIL); /* compute the initial chaining values ctx->X[], based on key */ - if (keyBytes == 0) /* is there a key? */ + if (keyBytes == 0) /* is there a key? */ { - memset(ctx->X, 0, sizeof(ctx->X)); /* no key: use all zeroes as key for config block */ + /* no key: use all zeroes as key for config block */ + memset(ctx->X, 0, sizeof(ctx->X)); } - else /* here to pre-process a key */ + else /* here to pre-process a key */ { Skein_assert(sizeof(cfg.b) >= sizeof(ctx->X)); /* do a mini-Init right here */ - ctx->h.hashBitLen = 8*sizeof(ctx->X); /* set output hash bit count = state size */ - Skein_Start_New_Type(ctx, KEY); /* set tweaks: T0 = 0; T1 = KEY type */ - memset(ctx->X, 0, sizeof(ctx->X)); /* zero the initial chaining variables */ - Skein_256_Update(ctx, key, keyBytes); /* hash the key */ - Skein_256_Final_Pad(ctx, cfg.b); /* put result into cfg.b[] */ - memcpy(ctx->X, cfg.b, sizeof(cfg.b)); /* copy over into ctx->X[] */ + /* set output hash bit count = state size */ + ctx->h.hashBitLen = 8*sizeof(ctx->X); + /* set tweaks: T0 = 0; T1 = KEY type */ + Skein_Start_New_Type(ctx, KEY); + /* zero the initial chaining variables */ + memset(ctx->X, 0, sizeof(ctx->X)); + /* hash the key */ + Skein_256_Update(ctx, key, keyBytes); + /* put result into cfg.b[] */ + Skein_256_Final_Pad(ctx, cfg.b); + /* copy over into ctx->X[] */ + memcpy(ctx->X, cfg.b, sizeof(cfg.b)); } - /* build/process the config block, type == CONFIG (could be precomputed for each key) */ - ctx->h.hashBitLen = hashBitLen; /* output hash bit count */ + /* + * build/process the config block, type == CONFIG (could be + * precomputed for each key) + */ + /* output hash bit count */ + ctx->h.hashBitLen = hashBitLen; Skein_Start_New_Type(ctx, CFG_FINAL); - memset(&cfg.w, 0, sizeof(cfg.w)); /* pre-pad cfg.w[] with zeroes */ + /* pre-pad cfg.w[] with zeroes */ + memset(&cfg.w, 0, sizeof(cfg.w)); cfg.w[0] = Skein_Swap64(SKEIN_SCHEMA_VER); - cfg.w[1] = Skein_Swap64(hashBitLen); /* hash result length in bits */ - cfg.w[2] = Skein_Swap64(treeInfo); /* tree hash config info (or SKEIN_CFG_TREE_INFO_SEQUENTIAL) */ + /* hash result length in bits */ + cfg.w[1] = Skein_Swap64(hashBitLen); + /* tree hash config info (or SKEIN_CFG_TREE_INFO_SEQUENTIAL) */ + cfg.w[2] = Skein_Swap64(treeInfo); Skein_Show_Key(256, &ctx->h, key, keyBytes); @@ -126,35 +153,46 @@ int Skein_256_InitExt(struct skein_256_ctx *ctx, size_t hashBitLen, u64 treeInfo /*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/ /* process the input bytes */ -int Skein_256_Update(struct skein_256_ctx *ctx, const u8 *msg, size_t msgByteCnt) +int Skein_256_Update(struct skein_256_ctx *ctx, const u8 *msg, + size_t msgByteCnt) { size_t n; - Skein_Assert(ctx->h.bCnt <= SKEIN_256_BLOCK_BYTES, SKEIN_FAIL); /* catch uninitialized context */ + /* catch uninitialized context */ + Skein_Assert(ctx->h.bCnt <= SKEIN_256_BLOCK_BYTES, SKEIN_FAIL); /* process full blocks, if any */ if (msgByteCnt + ctx->h.bCnt > SKEIN_256_BLOCK_BYTES) { - if (ctx->h.bCnt) /* finish up any buffered message data */ + /* finish up any buffered message data */ + if (ctx->h.bCnt) { - n = SKEIN_256_BLOCK_BYTES - ctx->h.bCnt; /* # bytes free in buffer b[] */ + /* # bytes free in buffer b[] */ + n = SKEIN_256_BLOCK_BYTES - ctx->h.bCnt; if (n) { - Skein_assert(n < msgByteCnt); /* check on our logic here */ + /* check on our logic here */ + Skein_assert(n < msgByteCnt); memcpy(&ctx->b[ctx->h.bCnt], msg, n); msgByteCnt -= n; msg += n; ctx->h.bCnt += n; } Skein_assert(ctx->h.bCnt == SKEIN_256_BLOCK_BYTES); - Skein_256_Process_Block(ctx, ctx->b, 1, SKEIN_256_BLOCK_BYTES); + Skein_256_Process_Block(ctx, ctx->b, 1, + SKEIN_256_BLOCK_BYTES); ctx->h.bCnt = 0; } - /* now process any remaining full blocks, directly from input message data */ + /* + * now process any remaining full blocks, directly from input + * message data + */ if (msgByteCnt > SKEIN_256_BLOCK_BYTES) { - n = (msgByteCnt-1) / SKEIN_256_BLOCK_BYTES; /* number of full blocks to process */ - Skein_256_Process_Block(ctx, msg, n, SKEIN_256_BLOCK_BYTES); + /* number of full blocks to process */ + n = (msgByteCnt-1) / SKEIN_256_BLOCK_BYTES; + Skein_256_Process_Block(ctx, msg, n, + SKEIN_256_BLOCK_BYTES); msgByteCnt -= n * SKEIN_256_BLOCK_BYTES; msg += n * SKEIN_256_BLOCK_BYTES; } @@ -178,31 +216,46 @@ int Skein_256_Final(struct skein_256_ctx *ctx, u8 *hashVal) { size_t i, n, byteCnt; u64 X[SKEIN_256_STATE_WORDS]; - Skein_Assert(ctx->h.bCnt <= SKEIN_256_BLOCK_BYTES, SKEIN_FAIL); /* catch uninitialized context */ + /* catch uninitialized context */ + Skein_Assert(ctx->h.bCnt <= SKEIN_256_BLOCK_BYTES, SKEIN_FAIL); - ctx->h.T[1] |= SKEIN_T1_FLAG_FINAL; /* tag as the final block */ - if (ctx->h.bCnt < SKEIN_256_BLOCK_BYTES) /* zero pad b[] if necessary */ - memset(&ctx->b[ctx->h.bCnt], 0, SKEIN_256_BLOCK_BYTES - ctx->h.bCnt); + /* tag as the final block */ + ctx->h.T[1] |= SKEIN_T1_FLAG_FINAL; + /* zero pad b[] if necessary */ + if (ctx->h.bCnt < SKEIN_256_BLOCK_BYTES) + memset(&ctx->b[ctx->h.bCnt], 0, + SKEIN_256_BLOCK_BYTES - ctx->h.bCnt); - Skein_256_Process_Block(ctx, ctx->b, 1, ctx->h.bCnt); /* process the final block */ + /* process the final block */ + Skein_256_Process_Block(ctx, ctx->b, 1, ctx->h.bCnt); /* now output the result */ - byteCnt = (ctx->h.hashBitLen + 7) >> 3; /* total number of output bytes */ + /* total number of output bytes */ + byteCnt = (ctx->h.hashBitLen + 7) >> 3; /* run Threefish in "counter mode" to generate output */ - memset(ctx->b, 0, sizeof(ctx->b)); /* zero out b[], so it can hold the counter */ - memcpy(X, ctx->X, sizeof(X)); /* keep a local copy of counter mode "key" */ + /* zero out b[], so it can hold the counter */ + memset(ctx->b, 0, sizeof(ctx->b)); + /* keep a local copy of counter mode "key" */ + memcpy(X, ctx->X, sizeof(X)); for (i = 0; i*SKEIN_256_BLOCK_BYTES < byteCnt; i++) { - ((u64 *)ctx->b)[0] = Skein_Swap64((u64) i); /* build the counter block */ + /* build the counter block */ + ((u64 *)ctx->b)[0] = Skein_Swap64((u64) i); Skein_Start_New_Type(ctx, OUT_FINAL); - Skein_256_Process_Block(ctx, ctx->b, 1, sizeof(u64)); /* run "counter mode" */ - n = byteCnt - i*SKEIN_256_BLOCK_BYTES; /* number of output bytes left to go */ + /* run "counter mode" */ + Skein_256_Process_Block(ctx, ctx->b, 1, sizeof(u64)); + /* number of output bytes left to go */ + n = byteCnt - i*SKEIN_256_BLOCK_BYTES; if (n >= SKEIN_256_BLOCK_BYTES) n = SKEIN_256_BLOCK_BYTES; - Skein_Put64_LSB_First(hashVal+i*SKEIN_256_BLOCK_BYTES, ctx->X, n); /* "output" the ctr mode bytes */ - Skein_Show_Final(256, &ctx->h, n, hashVal+i*SKEIN_256_BLOCK_BYTES); - memcpy(ctx->X, X, sizeof(X)); /* restore the counter mode key for next time */ + /* "output" the ctr mode bytes */ + Skein_Put64_LSB_First(hashVal+i*SKEIN_256_BLOCK_BYTES, ctx->X, + n); + Skein_Show_Final(256, &ctx->h, n, + hashVal+i*SKEIN_256_BLOCK_BYTES); + /* restore the counter mode key for next time */ + memcpy(ctx->X, X, sizeof(X)); } return SKEIN_SUCCESS; } @@ -240,21 +293,32 @@ int Skein_512_Init(struct skein_512_ctx *ctx, size_t hashBitLen) break; default: /* here if there is no precomputed IV value available */ - /* build/process the config block, type == CONFIG (could be precomputed) */ - Skein_Start_New_Type(ctx, CFG_FINAL); /* set tweaks: T0=0; T1=CFG | FINAL */ - - cfg.w[0] = Skein_Swap64(SKEIN_SCHEMA_VER); /* set the schema, version */ - cfg.w[1] = Skein_Swap64(hashBitLen); /* hash result length in bits */ + /* + * build/process the config block, type == CONFIG (could be + * precomputed) + */ + /* set tweaks: T0=0; T1=CFG | FINAL */ + Skein_Start_New_Type(ctx, CFG_FINAL); + + /* set the schema, version */ + cfg.w[0] = Skein_Swap64(SKEIN_SCHEMA_VER); + /* hash result length in bits */ + cfg.w[1] = Skein_Swap64(hashBitLen); cfg.w[2] = Skein_Swap64(SKEIN_CFG_TREE_INFO_SEQUENTIAL); - memset(&cfg.w[3], 0, sizeof(cfg) - 3*sizeof(cfg.w[0])); /* zero pad config block */ + /* zero pad config block */ + memset(&cfg.w[3], 0, sizeof(cfg) - 3*sizeof(cfg.w[0])); /* compute the initial chaining values from config block */ - memset(ctx->X, 0, sizeof(ctx->X)); /* zero the chaining variables */ + /* zero the chaining variables */ + memset(ctx->X, 0, sizeof(ctx->X)); Skein_512_Process_Block(ctx, cfg.b, 1, SKEIN_CFG_STR_LEN); break; } - /* The chaining vars ctx->X are now initialized for the given hashBitLen. */ + /* + * The chaining vars ctx->X are now initialized for the given + * hashBitLen. + */ /* Set up to process the data message portion of the hash (default) */ Skein_Start_New_Type(ctx, MSG); /* T0=0, T1= MSG type */ @@ -263,8 +327,10 @@ int Skein_512_Init(struct skein_512_ctx *ctx, size_t hashBitLen) /*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/ /* init the context for a MAC and/or tree hash operation */ -/* [identical to Skein_512_Init() when keyBytes == 0 && treeInfo == SKEIN_CFG_TREE_INFO_SEQUENTIAL] */ -int Skein_512_InitExt(struct skein_512_ctx *ctx, size_t hashBitLen, u64 treeInfo, const u8 *key, size_t keyBytes) +/* [identical to Skein_512_Init() when keyBytes == 0 && \ + * treeInfo == SKEIN_CFG_TREE_INFO_SEQUENTIAL] */ +int Skein_512_InitExt(struct skein_512_ctx *ctx, size_t hashBitLen, + u64 treeInfo, const u8 *key, size_t keyBytes) { union { @@ -278,27 +344,40 @@ int Skein_512_InitExt(struct skein_512_ctx *ctx, size_t hashBitLen, u64 treeInfo /* compute the initial chaining values ctx->X[], based on key */ if (keyBytes == 0) /* is there a key? */ { - memset(ctx->X, 0, sizeof(ctx->X)); /* no key: use all zeroes as key for config block */ + /* no key: use all zeroes as key for config block */ + memset(ctx->X, 0, sizeof(ctx->X)); } - else /* here to pre-process a key */ + else /* here to pre-process a key */ { Skein_assert(sizeof(cfg.b) >= sizeof(ctx->X)); /* do a mini-Init right here */ - ctx->h.hashBitLen = 8*sizeof(ctx->X); /* set output hash bit count = state size */ - Skein_Start_New_Type(ctx, KEY); /* set tweaks: T0 = 0; T1 = KEY type */ - memset(ctx->X, 0, sizeof(ctx->X)); /* zero the initial chaining variables */ - Skein_512_Update(ctx, key, keyBytes); /* hash the key */ - Skein_512_Final_Pad(ctx, cfg.b); /* put result into cfg.b[] */ - memcpy(ctx->X, cfg.b, sizeof(cfg.b)); /* copy over into ctx->X[] */ + /* set output hash bit count = state size */ + ctx->h.hashBitLen = 8*sizeof(ctx->X); + /* set tweaks: T0 = 0; T1 = KEY type */ + Skein_Start_New_Type(ctx, KEY); + /* zero the initial chaining variables */ + memset(ctx->X, 0, sizeof(ctx->X)); + /* hash the key */ + Skein_512_Update(ctx, key, keyBytes); + /* put result into cfg.b[] */ + Skein_512_Final_Pad(ctx, cfg.b); + /* copy over into ctx->X[] */ + memcpy(ctx->X, cfg.b, sizeof(cfg.b)); } - /* build/process the config block, type == CONFIG (could be precomputed for each key) */ + /* + * build/process the config block, type == CONFIG (could be + * precomputed for each key) + */ ctx->h.hashBitLen = hashBitLen; /* output hash bit count */ Skein_Start_New_Type(ctx, CFG_FINAL); - memset(&cfg.w, 0, sizeof(cfg.w)); /* pre-pad cfg.w[] with zeroes */ + /* pre-pad cfg.w[] with zeroes */ + memset(&cfg.w, 0, sizeof(cfg.w)); cfg.w[0] = Skein_Swap64(SKEIN_SCHEMA_VER); - cfg.w[1] = Skein_Swap64(hashBitLen); /* hash result length in bits */ - cfg.w[2] = Skein_Swap64(treeInfo); /* tree hash config info (or SKEIN_CFG_TREE_INFO_SEQUENTIAL) */ + /* hash result length in bits */ + cfg.w[1] = Skein_Swap64(hashBitLen); + /* tree hash config info (or SKEIN_CFG_TREE_INFO_SEQUENTIAL) */ + cfg.w[2] = Skein_Swap64(treeInfo); Skein_Show_Key(512, &ctx->h, key, keyBytes); @@ -314,35 +393,46 @@ int Skein_512_InitExt(struct skein_512_ctx *ctx, size_t hashBitLen, u64 treeInfo /*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/ /* process the input bytes */ -int Skein_512_Update(struct skein_512_ctx *ctx, const u8 *msg, size_t msgByteCnt) +int Skein_512_Update(struct skein_512_ctx *ctx, const u8 *msg, + size_t msgByteCnt) { size_t n; - Skein_Assert(ctx->h.bCnt <= SKEIN_512_BLOCK_BYTES, SKEIN_FAIL); /* catch uninitialized context */ + /* catch uninitialized context */ + Skein_Assert(ctx->h.bCnt <= SKEIN_512_BLOCK_BYTES, SKEIN_FAIL); /* process full blocks, if any */ if (msgByteCnt + ctx->h.bCnt > SKEIN_512_BLOCK_BYTES) { - if (ctx->h.bCnt) /* finish up any buffered message data */ + /* finish up any buffered message data */ + if (ctx->h.bCnt) { - n = SKEIN_512_BLOCK_BYTES - ctx->h.bCnt; /* # bytes free in buffer b[] */ + /* # bytes free in buffer b[] */ + n = SKEIN_512_BLOCK_BYTES - ctx->h.bCnt; if (n) { - Skein_assert(n < msgByteCnt); /* check on our logic here */ + /* check on our logic here */ + Skein_assert(n < msgByteCnt); memcpy(&ctx->b[ctx->h.bCnt], msg, n); msgByteCnt -= n; msg += n; ctx->h.bCnt += n; } Skein_assert(ctx->h.bCnt == SKEIN_512_BLOCK_BYTES); - Skein_512_Process_Block(ctx, ctx->b, 1, SKEIN_512_BLOCK_BYTES); + Skein_512_Process_Block(ctx, ctx->b, 1, + SKEIN_512_BLOCK_BYTES); ctx->h.bCnt = 0; } - /* now process any remaining full blocks, directly from input message data */ + /* + * now process any remaining full blocks, directly from input + * message data + */ if (msgByteCnt > SKEIN_512_BLOCK_BYTES) { - n = (msgByteCnt-1) / SKEIN_512_BLOCK_BYTES; /* number of full blocks to process */ - Skein_512_Process_Block(ctx, msg, n, SKEIN_512_BLOCK_BYTES); + /* number of full blocks to process */ + n = (msgByteCnt-1) / SKEIN_512_BLOCK_BYTES; + Skein_512_Process_Block(ctx, msg, n, + SKEIN_512_BLOCK_BYTES); msgByteCnt -= n * SKEIN_512_BLOCK_BYTES; msg += n * SKEIN_512_BLOCK_BYTES; } @@ -366,31 +456,46 @@ int Skein_512_Final(struct skein_512_ctx *ctx, u8 *hashVal) { size_t i, n, byteCnt; u64 X[SKEIN_512_STATE_WORDS]; - Skein_Assert(ctx->h.bCnt <= SKEIN_512_BLOCK_BYTES, SKEIN_FAIL); /* catch uninitialized context */ + /* catch uninitialized context */ + Skein_Assert(ctx->h.bCnt <= SKEIN_512_BLOCK_BYTES, SKEIN_FAIL); - ctx->h.T[1] |= SKEIN_T1_FLAG_FINAL; |