switch (hash_bit_len) { /* use pre-computed values, where available */
case 256:
- memcpy(ctx->X, SKEIN_256_IV_256, sizeof(ctx->X));
+ memcpy(ctx->x, SKEIN_256_IV_256, sizeof(ctx->x));
break;
case 224:
- memcpy(ctx->X, SKEIN_256_IV_224, sizeof(ctx->X));
+ memcpy(ctx->x, SKEIN_256_IV_224, sizeof(ctx->x));
break;
case 160:
- memcpy(ctx->X, SKEIN_256_IV_160, sizeof(ctx->X));
+ memcpy(ctx->x, SKEIN_256_IV_160, sizeof(ctx->x));
break;
case 128:
- memcpy(ctx->X, SKEIN_256_IV_128, sizeof(ctx->X));
+ memcpy(ctx->x, SKEIN_256_IV_128, sizeof(ctx->x));
break;
default:
/* here if there is no precomputed IV value available */
/* compute the initial chaining values from config block */
/* zero the chaining variables */
- memset(ctx->X, 0, sizeof(ctx->X));
+ 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 hash_bit_len. */
+ /* The chaining vars ctx->x are now initialized for hash_bit_len. */
/* Set up to process the data message portion of the hash (default) */
skein_start_new_type(ctx, MSG); /* T0=0, T1= MSG type */
skein_assert_ret(hash_bit_len > 0, SKEIN_BAD_HASHLEN);
skein_assert_ret(key_bytes == 0 || key != NULL, SKEIN_FAIL);
- /* compute the initial chaining values ctx->X[], based on key */
+ /* compute the initial chaining values ctx->x[], based on key */
if (key_bytes == 0) { /* is there a key? */
/* no key: use all zeroes as key for config block */
- memset(ctx->X, 0, sizeof(ctx->X));
+ memset(ctx->x, 0, sizeof(ctx->x));
} else { /* here to pre-process a key */
- skein_assert(sizeof(cfg.b) >= sizeof(ctx->X));
+ skein_assert(sizeof(cfg.b) >= sizeof(ctx->x));
/* do a mini-Init right here */
/* set output hash bit count = state size */
- ctx->h.hash_bit_len = 8*sizeof(ctx->X);
+ ctx->h.hash_bit_len = 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));
+ memset(ctx->x, 0, sizeof(ctx->x));
/* hash the key */
skein_256_update(ctx, key, key_bytes);
/* 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));
+ /* copy over into ctx->x[] */
+ memcpy(ctx->x, cfg.b, sizeof(cfg.b));
}
/*
* build/process the config block, type == CONFIG (could be
/* compute the initial chaining values from config block */
skein_256_process_block(ctx, cfg.b, 1, SKEIN_CFG_STR_LEN);
- /* The chaining vars ctx->X are now initialized */
+ /* The chaining vars ctx->x are now initialized */
/* Set up to process the data message portion of the hash (default) */
skein_start_new_type(ctx, MSG);
int skein_256_final(struct skein_256_ctx *ctx, u8 *hash_val)
{
size_t i, n, byte_cnt;
- u64 X[SKEIN_256_STATE_WORDS];
+ u64 x[SKEIN_256_STATE_WORDS];
/* catch uninitialized context */
skein_assert_ret(ctx->h.b_cnt <= SKEIN_256_BLOCK_BYTES, SKEIN_FAIL);
/* tag as the final block */
- ctx->h.T[1] |= SKEIN_T1_FLAG_FINAL;
+ ctx->h.tweak[1] |= SKEIN_T1_FLAG_FINAL;
/* zero pad b[] if necessary */
if (ctx->h.b_cnt < SKEIN_256_BLOCK_BYTES)
memset(&ctx->b[ctx->h.b_cnt], 0,
/* 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));
+ memcpy(x, ctx->x, sizeof(x));
for (i = 0; i*SKEIN_256_BLOCK_BYTES < byte_cnt; i++) {
/* build the counter block */
((u64 *)ctx->b)[0] = skein_swap64((u64) i);
if (n >= SKEIN_256_BLOCK_BYTES)
n = SKEIN_256_BLOCK_BYTES;
/* "output" the ctr mode bytes */
- skein_put64_lsb_first(hash_val+i*SKEIN_256_BLOCK_BYTES, ctx->X,
+ skein_put64_lsb_first(hash_val+i*SKEIN_256_BLOCK_BYTES, ctx->x,
n);
skein_show_final(256, &ctx->h, n,
hash_val+i*SKEIN_256_BLOCK_BYTES);
/* restore the counter mode key for next time */
- memcpy(ctx->X, X, sizeof(X));
+ memcpy(ctx->x, x, sizeof(x));
}
return SKEIN_SUCCESS;
}
switch (hash_bit_len) { /* use pre-computed values, where available */
case 512:
- memcpy(ctx->X, SKEIN_512_IV_512, sizeof(ctx->X));
+ memcpy(ctx->x, SKEIN_512_IV_512, sizeof(ctx->x));
break;
case 384:
- memcpy(ctx->X, SKEIN_512_IV_384, sizeof(ctx->X));
+ memcpy(ctx->x, SKEIN_512_IV_384, sizeof(ctx->x));
break;
case 256:
- memcpy(ctx->X, SKEIN_512_IV_256, sizeof(ctx->X));
+ memcpy(ctx->x, SKEIN_512_IV_256, sizeof(ctx->x));
break;
case 224:
- memcpy(ctx->X, SKEIN_512_IV_224, sizeof(ctx->X));
+ memcpy(ctx->x, SKEIN_512_IV_224, sizeof(ctx->x));
break;
default:
/* here if there is no precomputed IV value available */
/* compute the initial chaining values from config block */
/* zero the chaining variables */
- memset(ctx->X, 0, sizeof(ctx->X));
+ 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
+ * The chaining vars ctx->x are now initialized for the given
* hash_bit_len.
*/
/* Set up to process the data message portion of the hash (default) */
skein_assert_ret(hash_bit_len > 0, SKEIN_BAD_HASHLEN);
skein_assert_ret(key_bytes == 0 || key != NULL, SKEIN_FAIL);
- /* compute the initial chaining values ctx->X[], based on key */
+ /* compute the initial chaining values ctx->x[], based on key */
if (key_bytes == 0) { /* is there a key? */
/* no key: use all zeroes as key for config block */
- memset(ctx->X, 0, sizeof(ctx->X));
+ memset(ctx->x, 0, sizeof(ctx->x));
} else { /* here to pre-process a key */
- skein_assert(sizeof(cfg.b) >= sizeof(ctx->X));
+ skein_assert(sizeof(cfg.b) >= sizeof(ctx->x));
/* do a mini-Init right here */
/* set output hash bit count = state size */
- ctx->h.hash_bit_len = 8*sizeof(ctx->X);
+ ctx->h.hash_bit_len = 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));
+ memset(ctx->x, 0, sizeof(ctx->x));
/* hash the key */
skein_512_update(ctx, key, key_bytes);
/* 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));
+ /* copy over into ctx->x[] */
+ memcpy(ctx->x, cfg.b, sizeof(cfg.b));
}
/*
* build/process the config block, type == CONFIG (could be
/* compute the initial chaining values from config block */
skein_512_process_block(ctx, cfg.b, 1, SKEIN_CFG_STR_LEN);
- /* The chaining vars ctx->X are now initialized */
+ /* The chaining vars ctx->x are now initialized */
/* Set up to process the data message portion of the hash (default) */
skein_start_new_type(ctx, MSG);
int skein_512_final(struct skein_512_ctx *ctx, u8 *hash_val)
{
size_t i, n, byte_cnt;
- u64 X[SKEIN_512_STATE_WORDS];
+ u64 x[SKEIN_512_STATE_WORDS];
/* catch uninitialized context */
skein_assert_ret(ctx->h.b_cnt <= SKEIN_512_BLOCK_BYTES, SKEIN_FAIL);
/* tag as the final block */
- ctx->h.T[1] |= SKEIN_T1_FLAG_FINAL;
+ ctx->h.tweak[1] |= SKEIN_T1_FLAG_FINAL;
/* zero pad b[] if necessary */
if (ctx->h.b_cnt < SKEIN_512_BLOCK_BYTES)
memset(&ctx->b[ctx->h.b_cnt], 0,
/* 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));
+ memcpy(x, ctx->x, sizeof(x));
for (i = 0; i*SKEIN_512_BLOCK_BYTES < byte_cnt; i++) {
/* build the counter block */
((u64 *)ctx->b)[0] = skein_swap64((u64) i);
if (n >= SKEIN_512_BLOCK_BYTES)
n = SKEIN_512_BLOCK_BYTES;
/* "output" the ctr mode bytes */
- skein_put64_lsb_first(hash_val+i*SKEIN_512_BLOCK_BYTES, ctx->X,
+ skein_put64_lsb_first(hash_val+i*SKEIN_512_BLOCK_BYTES, ctx->x,
n);
skein_show_final(512, &ctx->h, n,
hash_val+i*SKEIN_512_BLOCK_BYTES);
/* restore the counter mode key for next time */
- memcpy(ctx->X, X, sizeof(X));
+ memcpy(ctx->x, x, sizeof(x));
}
return SKEIN_SUCCESS;
}
switch (hash_bit_len) { /* use pre-computed values, where available */
case 512:
- memcpy(ctx->X, SKEIN_1024_IV_512, sizeof(ctx->X));
+ memcpy(ctx->x, SKEIN_1024_IV_512, sizeof(ctx->x));
break;
case 384:
- memcpy(ctx->X, SKEIN_1024_IV_384, sizeof(ctx->X));
+ memcpy(ctx->x, SKEIN_1024_IV_384, sizeof(ctx->x));
break;
case 1024:
- memcpy(ctx->X, SKEIN_1024_IV_1024, sizeof(ctx->X));
+ memcpy(ctx->x, SKEIN_1024_IV_1024, sizeof(ctx->x));
break;
default:
/* here if there is no precomputed IV value available */
/* compute the initial chaining values from config block */
/* zero the chaining variables */
- memset(ctx->X, 0, sizeof(ctx->X));
+ memset(ctx->x, 0, sizeof(ctx->x));
skein_1024_process_block(ctx, cfg.b, 1, SKEIN_CFG_STR_LEN);
break;
}
- /* The chaining vars ctx->X are now initialized for the hash_bit_len. */
+ /* The chaining vars ctx->x are now initialized for the hash_bit_len. */
/* Set up to process the data message portion of the hash (default) */
skein_start_new_type(ctx, MSG); /* T0=0, T1= MSG type */
skein_assert_ret(hash_bit_len > 0, SKEIN_BAD_HASHLEN);
skein_assert_ret(key_bytes == 0 || key != NULL, SKEIN_FAIL);
- /* compute the initial chaining values ctx->X[], based on key */
+ /* compute the initial chaining values ctx->x[], based on key */
if (key_bytes == 0) { /* is there a key? */
/* no key: use all zeroes as key for config block */
- memset(ctx->X, 0, sizeof(ctx->X));
+ memset(ctx->x, 0, sizeof(ctx->x));
} else { /* here to pre-process a key */
- skein_assert(sizeof(cfg.b) >= sizeof(ctx->X));
+ skein_assert(sizeof(cfg.b) >= sizeof(ctx->x));
/* do a mini-Init right here */
/* set output hash bit count = state size */
- ctx->h.hash_bit_len = 8*sizeof(ctx->X);
+ ctx->h.hash_bit_len = 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));
+ memset(ctx->x, 0, sizeof(ctx->x));
/* hash the key */
skein_1024_update(ctx, key, key_bytes);
/* put result into cfg.b[] */
skein_1024_final_pad(ctx, cfg.b);
- /* copy over into ctx->X[] */
- memcpy(ctx->X, cfg.b, sizeof(cfg.b));
+ /* copy over into ctx->x[] */
+ memcpy(ctx->x, cfg.b, sizeof(cfg.b));
}
/*
* build/process the config block, type == CONFIG (could be
/* compute the initial chaining values from config block */
skein_1024_process_block(ctx, cfg.b, 1, SKEIN_CFG_STR_LEN);
- /* The chaining vars ctx->X are now initialized */
+ /* The chaining vars ctx->x are now initialized */
/* Set up to process the data message portion of the hash (default) */
skein_start_new_type(ctx, MSG);
int skein_1024_final(struct skein_1024_ctx *ctx, u8 *hash_val)
{
size_t i, n, byte_cnt;
- u64 X[SKEIN_1024_STATE_WORDS];
+ u64 x[SKEIN_1024_STATE_WORDS];
/* catch uninitialized context */
skein_assert_ret(ctx->h.b_cnt <= SKEIN_1024_BLOCK_BYTES, SKEIN_FAIL);
/* tag as the final block */
- ctx->h.T[1] |= SKEIN_T1_FLAG_FINAL;
+ ctx->h.tweak[1] |= SKEIN_T1_FLAG_FINAL;
/* zero pad b[] if necessary */
if (ctx->h.b_cnt < SKEIN_1024_BLOCK_BYTES)
memset(&ctx->b[ctx->h.b_cnt], 0,
/* 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));
+ memcpy(x, ctx->x, sizeof(x));
for (i = 0; i*SKEIN_1024_BLOCK_BYTES < byte_cnt; i++) {
/* build the counter block */
((u64 *)ctx->b)[0] = skein_swap64((u64) i);
if (n >= SKEIN_1024_BLOCK_BYTES)
n = SKEIN_1024_BLOCK_BYTES;
/* "output" the ctr mode bytes */
- skein_put64_lsb_first(hash_val+i*SKEIN_1024_BLOCK_BYTES, ctx->X,
+ skein_put64_lsb_first(hash_val+i*SKEIN_1024_BLOCK_BYTES, ctx->x,
n);
skein_show_final(1024, &ctx->h, n,
hash_val+i*SKEIN_1024_BLOCK_BYTES);
/* restore the counter mode key for next time */
- memcpy(ctx->X, X, sizeof(X));
+ memcpy(ctx->x, x, sizeof(x));
}
return SKEIN_SUCCESS;
}
skein_assert_ret(ctx->h.b_cnt <= SKEIN_256_BLOCK_BYTES, SKEIN_FAIL);
/* tag as the final block */
- ctx->h.T[1] |= SKEIN_T1_FLAG_FINAL;
+ ctx->h.tweak[1] |= SKEIN_T1_FLAG_FINAL;
/* zero pad b[] if necessary */
if (ctx->h.b_cnt < SKEIN_256_BLOCK_BYTES)
memset(&ctx->b[ctx->h.b_cnt], 0,
skein_256_process_block(ctx, ctx->b, 1, ctx->h.b_cnt);
/* "output" the state bytes */
- skein_put64_lsb_first(hash_val, ctx->X, SKEIN_256_BLOCK_BYTES);
+ skein_put64_lsb_first(hash_val, ctx->x, SKEIN_256_BLOCK_BYTES);
return SKEIN_SUCCESS;
}
skein_assert_ret(ctx->h.b_cnt <= SKEIN_512_BLOCK_BYTES, SKEIN_FAIL);
/* tag as the final block */
- ctx->h.T[1] |= SKEIN_T1_FLAG_FINAL;
+ ctx->h.tweak[1] |= SKEIN_T1_FLAG_FINAL;
/* zero pad b[] if necessary */
if (ctx->h.b_cnt < SKEIN_512_BLOCK_BYTES)
memset(&ctx->b[ctx->h.b_cnt], 0,
skein_512_process_block(ctx, ctx->b, 1, ctx->h.b_cnt);
/* "output" the state bytes */
- skein_put64_lsb_first(hash_val, ctx->X, SKEIN_512_BLOCK_BYTES);
+ skein_put64_lsb_first(hash_val, ctx->x, SKEIN_512_BLOCK_BYTES);
return SKEIN_SUCCESS;
}
skein_assert_ret(ctx->h.b_cnt <= SKEIN_1024_BLOCK_BYTES, SKEIN_FAIL);
/* tag as the final block */
- ctx->h.T[1] |= SKEIN_T1_FLAG_FINAL;
+ ctx->h.tweak[1] |= SKEIN_T1_FLAG_FINAL;
/* zero pad b[] if necessary */
if (ctx->h.b_cnt < SKEIN_1024_BLOCK_BYTES)
memset(&ctx->b[ctx->h.b_cnt], 0,
skein_1024_process_block(ctx, ctx->b, 1, ctx->h.b_cnt);
/* "output" the state bytes */
- skein_put64_lsb_first(hash_val, ctx->X, SKEIN_1024_BLOCK_BYTES);
+ skein_put64_lsb_first(hash_val, ctx->x, SKEIN_1024_BLOCK_BYTES);
return SKEIN_SUCCESS;
}
int skein_256_output(struct skein_256_ctx *ctx, u8 *hash_val)
{
size_t i, n, byte_cnt;
- u64 X[SKEIN_256_STATE_WORDS];
+ u64 x[SKEIN_256_STATE_WORDS];
/* catch uninitialized context */
skein_assert_ret(ctx->h.b_cnt <= SKEIN_256_BLOCK_BYTES, SKEIN_FAIL);
/* 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));
+ memcpy(x, ctx->x, sizeof(x));
for (i = 0; i*SKEIN_256_BLOCK_BYTES < byte_cnt; i++) {
/* build the counter block */
((u64 *)ctx->b)[0] = skein_swap64((u64) i);
if (n >= SKEIN_256_BLOCK_BYTES)
n = SKEIN_256_BLOCK_BYTES;
/* "output" the ctr mode bytes */
- skein_put64_lsb_first(hash_val+i*SKEIN_256_BLOCK_BYTES, ctx->X,
+ skein_put64_lsb_first(hash_val+i*SKEIN_256_BLOCK_BYTES, ctx->x,
n);
skein_show_final(256, &ctx->h, n,
hash_val+i*SKEIN_256_BLOCK_BYTES);
/* restore the counter mode key for next time */
- memcpy(ctx->X, X, sizeof(X));
+ memcpy(ctx->x, x, sizeof(x));
}
return SKEIN_SUCCESS;
}
int skein_512_output(struct skein_512_ctx *ctx, u8 *hash_val)
{
size_t i, n, byte_cnt;
- u64 X[SKEIN_512_STATE_WORDS];
+ u64 x[SKEIN_512_STATE_WORDS];
/* catch uninitialized context */
skein_assert_ret(ctx->h.b_cnt <= SKEIN_512_BLOCK_BYTES, SKEIN_FAIL);
/* 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));
+ memcpy(x, ctx->x, sizeof(x));
for (i = 0; i*SKEIN_512_BLOCK_BYTES < byte_cnt; i++) {
/* build the counter block */
((u64 *)ctx->b)[0] = skein_swap64((u64) i);
if (n >= SKEIN_512_BLOCK_BYTES)
n = SKEIN_512_BLOCK_BYTES;
/* "output" the ctr mode bytes */
- skein_put64_lsb_first(hash_val+i*SKEIN_512_BLOCK_BYTES, ctx->X,
+ skein_put64_lsb_first(hash_val+i*SKEIN_512_BLOCK_BYTES, ctx->x,
n);
skein_show_final(256, &ctx->h, n,
hash_val+i*SKEIN_512_BLOCK_BYTES);
/* restore the counter mode key for next time */
- memcpy(ctx->X, X, sizeof(X));
+ memcpy(ctx->x, x, sizeof(x));
}
return SKEIN_SUCCESS;
}
int skein_1024_output(struct skein_1024_ctx *ctx, u8 *hash_val)
{
size_t i, n, byte_cnt;
- u64 X[SKEIN_1024_STATE_WORDS];
+ u64 x[SKEIN_1024_STATE_WORDS];
/* catch uninitialized context */
skein_assert_ret(ctx->h.b_cnt <= SKEIN_1024_BLOCK_BYTES, SKEIN_FAIL);
/* 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));
+ memcpy(x, ctx->x, sizeof(x));
for (i = 0; i*SKEIN_1024_BLOCK_BYTES < byte_cnt; i++) {
/* build the counter block */
((u64 *)ctx->b)[0] = skein_swap64((u64) i);
if (n >= SKEIN_1024_BLOCK_BYTES)
n = SKEIN_1024_BLOCK_BYTES;
/* "output" the ctr mode bytes */
- skein_put64_lsb_first(hash_val+i*SKEIN_1024_BLOCK_BYTES, ctx->X,
+ skein_put64_lsb_first(hash_val+i*SKEIN_1024_BLOCK_BYTES, ctx->x,
n);
skein_show_final(256, &ctx->h, n,
hash_val+i*SKEIN_1024_BLOCK_BYTES);
/* restore the counter mode key for next time */
- memcpy(ctx->X, X, sizeof(X));
+ memcpy(ctx->x, x, sizeof(x));
}
return SKEIN_SUCCESS;
}
struct skein_ctx_hdr {
size_t hash_bit_len; /* size of hash result, in bits */
size_t b_cnt; /* current byte count in buffer b[] */
- u64 T[SKEIN_MODIFIER_WORDS]; /* tweak: T[0]=byte cnt, T[1]=flags */
+ u64 tweak[SKEIN_MODIFIER_WORDS]; /* tweak[0]=byte cnt, tweak[1]=flags */
};
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 */
+ 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_ctx_hdr h; /* common header context variables */
- u64 X[SKEIN_512_STATE_WORDS]; /* chaining variables */
+ u64 x[SKEIN_512_STATE_WORDS]; /* chaining variables */
u8 b[SKEIN_512_BLOCK_BYTES]; /* partial block buf (8-byte aligned) */
};
struct skein_1024_ctx { /* 1024-bit Skein hash context structure */
struct skein_ctx_hdr h; /* common header context variables */
- u64 X[SKEIN_1024_STATE_WORDS]; /* chaining variables */
+ u64 x[SKEIN_1024_STATE_WORDS]; /* chaining variables */
u8 b[SKEIN_1024_BLOCK_BYTES]; /* partial block buf (8-byte aligned) */
};
** reference and optimized code.
******************************************************************/
-/* tweak word T[1]: bit field starting positions */
+/* tweak word tweak[1]: bit field starting positions */
#define SKEIN_T1_BIT(BIT) ((BIT) - 64) /* second word */
#define SKEIN_T1_POS_TREE_LVL SKEIN_T1_BIT(112) /* 112..118 hash tree level */
#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) */
+/* tweak word tweak[1]: flag bit definition(s) */
#define SKEIN_T1_FLAG_FIRST (((u64) 1) << SKEIN_T1_POS_FIRST)
#define SKEIN_T1_FLAG_FINAL (((u64) 1) << SKEIN_T1_POS_FINAL)
#define SKEIN_T1_FLAG_BIT_PAD (((u64) 1) << SKEIN_T1_POS_BIT_PAD)
-/* tweak word T[1]: tree level bit field mask */
+/* tweak word tweak[1]: tree level bit field mask */
#define SKEIN_T1_TREE_LVL_MASK (((u64)0x7F) << SKEIN_T1_POS_TREE_LVL)
#define SKEIN_T1_TREE_LEVEL(n) (((u64) (n)) << SKEIN_T1_POS_TREE_LVL)
-/* tweak word T[1]: block type field */
+/* tweak word tweak[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 */
** Skein macros for getting/setting tweak words, etc.
** These are useful for partial input bytes, hash tree init/update, etc.
**/
-#define skein_get_tweak(ctx_ptr, TWK_NUM) ((ctx_ptr)->h.T[TWK_NUM])
+#define skein_get_tweak(ctx_ptr, TWK_NUM) ((ctx_ptr)->h.tweak[TWK_NUM])
#define skein_set_tweak(ctx_ptr, TWK_NUM, t_val) { \
- (ctx_ptr)->h.T[TWK_NUM] = (t_val); \
+ (ctx_ptr)->h.tweak[TWK_NUM] = (t_val); \
}
#define skein_get_T0(ctx_ptr) skein_get_tweak(ctx_ptr, 0)
/*
* setup for starting with a new type:
- * h.T[0]=0; h.T[1] = NEW_TYPE; h.b_cnt=0;
+ * h.tweak[0]=0; h.tweak[1] = NEW_TYPE; h.b_cnt=0;
*/
#define skein_start_new_type(ctx_ptr, BLK_TYPE) { \
skein_set_T0_T1(ctx_ptr, 0, SKEIN_T1_FLAG_FIRST | \
}
#define skein_clear_first_flag(hdr) { \
- (hdr).T[1] &= ~SKEIN_T1_FLAG_FIRST; \
+ (hdr).tweak[1] &= ~SKEIN_T1_FLAG_FIRST; \
}
#define skein_set_bit_pad_flag(hdr) { \
- (hdr).T[1] |= SKEIN_T1_FLAG_BIT_PAD; \
+ (hdr).tweak[1] |= SKEIN_T1_FLAG_BIT_PAD; \
}
#define skein_set_tree_level(hdr, height) { \
- (hdr).T[1] |= SKEIN_T1_TREE_LEVEL(height); \
+ (hdr).tweak[1] |= SKEIN_T1_TREE_LEVEL(height); \
}
/*****************************************************************
#ifdef SKEIN_DEBUG /* examine/display intermediate values? */
#include "skein_debug.h"
#else /* default is no callouts */
-#define skein_show_block(bits, ctx, X, blk_ptr, w_ptr, ks_event_ptr, ks_odd_ptr)
-#define skein_show_round(bits, ctx, r, X)
-#define skein_show_r_ptr(bits, ctx, r, X_ptr)
+#define skein_show_block(bits, ctx, x, blk_ptr, w_ptr, ks_event_ptr, ks_odd_ptr)
+#define skein_show_round(bits, ctx, r, x)
+#define skein_show_r_ptr(bits, ctx, r, x_ptr)
#define skein_show_final(bits, ctx, cnt, out_ptr)
#define skein_show_key(bits, ctx, key, key_bytes)
#endif