#define Skein_Get64_LSB_First(dst64, src08, wCnt) memcpy(dst64, src08, 8*(wCnt))
#define Skein_Swap64(w64) (w64)
-enum
- {
+enum {
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_512_BLOCK_BYTES (8*SKEIN_512_STATE_WORDS)
#define SKEIN1024_BLOCK_BYTES (8*SKEIN1024_STATE_WORDS)
-struct skein_ctx_hdr
- {
+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: 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 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 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 buf (8-byte aligned) */
- };
+};
/* Skein APIs for (incremental) "straight hashing" */
int Skein_256_Init(struct skein_256_ctx *ctx, size_t hashBitLen);
/*****************************************************************
** Skein block function constants (shared across Ref and Opt code)
******************************************************************/
-enum
- {
+enum {
/* Skein_256 round rotation constants */
R_256_0_0 = 14, R_256_0_1 = 16,
R_256_1_0 = 52, R_256_1_1 = 57,
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) /* # rounds for diff block sizes */
#define MK_64 SKEIN_MK_64
/* blkSize = 256 bits. hashSize = 128 bits */
-const u64 SKEIN_256_IV_128[] =
- {
+const u64 SKEIN_256_IV_128[] = {
MK_64(0xE1111906, 0x964D7260),
MK_64(0x883DAAA7, 0x7C8D811C),
MK_64(0x10080DF4, 0x91960F7A),
MK_64(0xCCF7DDE5, 0xB45BC1C2)
- };
+};
/* blkSize = 256 bits. hashSize = 160 bits */
-const u64 SKEIN_256_IV_160[] =
- {
+const u64 SKEIN_256_IV_160[] = {
MK_64(0x14202314, 0x72825E98),
MK_64(0x2AC4E9A2, 0x5A77E590),
MK_64(0xD47A5856, 0x8838D63E),
MK_64(0x2DD2E496, 0x8586AB7D)
- };
+};
/* blkSize = 256 bits. hashSize = 224 bits */
-const u64 SKEIN_256_IV_224[] =
- {
+const u64 SKEIN_256_IV_224[] = {
MK_64(0xC6098A8C, 0x9AE5EA0B),
MK_64(0x876D5686, 0x08C5191C),
MK_64(0x99CB88D7, 0xD7F53884),
MK_64(0x384BDDB1, 0xAEDDB5DE)
- };
+};
/* blkSize = 256 bits. hashSize = 256 bits */
-const u64 SKEIN_256_IV_256[] =
- {
+const u64 SKEIN_256_IV_256[] = {
MK_64(0xFC9DA860, 0xD048B449),
MK_64(0x2FCA6647, 0x9FA7D833),
MK_64(0xB33BC389, 0x6656840F),
MK_64(0x6A54E920, 0xFDE8DA69)
- };
+};
/* blkSize = 512 bits. hashSize = 128 bits */
-const u64 SKEIN_512_IV_128[] =
- {
+const u64 SKEIN_512_IV_128[] = {
MK_64(0xA8BC7BF3, 0x6FBF9F52),
MK_64(0x1E9872CE, 0xBD1AF0AA),
MK_64(0x309B1790, 0xB32190D3),
MK_64(0x1A18EBEA, 0xD46A32E3),
MK_64(0xA2CC5B18, 0xCE84AA82),
MK_64(0x6982AB28, 0x9D46982D)
- };
+};
/* blkSize = 512 bits. hashSize = 160 bits */
-const u64 SKEIN_512_IV_160[] =
- {
+const u64 SKEIN_512_IV_160[] = {
MK_64(0x28B81A2A, 0xE013BD91),
MK_64(0xC2F11668, 0xB5BDF78F),
MK_64(0x1760D8F3, 0xF6A56F12),
MK_64(0xD908922E, 0x63ED70B8),
MK_64(0xB8EC76FF, 0xECCB52FA),
MK_64(0x01A47BB8, 0xA3F27A6E)
- };
+};
/* blkSize = 512 bits. hashSize = 224 bits */
-const u64 SKEIN_512_IV_224[] =
- {
+const u64 SKEIN_512_IV_224[] = {
MK_64(0xCCD06162, 0x48677224),
MK_64(0xCBA65CF3, 0xA92339EF),
MK_64(0x8CCD69D6, 0x52FF4B64),
MK_64(0x6776FE65, 0x75D4EB3D),
MK_64(0x99FBC70E, 0x997413E9),
MK_64(0x9E2CFCCF, 0xE1C41EF7)
- };
+};
/* blkSize = 512 bits. hashSize = 256 bits */
-const u64 SKEIN_512_IV_256[] =
- {
+const u64 SKEIN_512_IV_256[] = {
MK_64(0xCCD044A1, 0x2FDB3E13),
MK_64(0xE8359030, 0x1A79A9EB),
MK_64(0x55AEA061, 0x4F816E6F),
MK_64(0xE7A436CD, 0xC4746251),
MK_64(0xC36FBAF9, 0x393AD185),
MK_64(0x3EEDBA18, 0x33EDFC13)
- };
+};
/* blkSize = 512 bits. hashSize = 384 bits */
-const u64 SKEIN_512_IV_384[] =
- {
+const u64 SKEIN_512_IV_384[] = {
MK_64(0xA3F6C6BF, 0x3A75EF5F),
MK_64(0xB0FEF9CC, 0xFD84FAA4),
MK_64(0x9D77DD66, 0x3D770CFE),
MK_64(0x7ED7D434, 0xE5807407),
MK_64(0x548FC1AC, 0xD4EC44D6),
MK_64(0x266E1754, 0x6AA18FF8)
- };
+};
/* blkSize = 512 bits. hashSize = 512 bits */
-const u64 SKEIN_512_IV_512[] =
- {
+const u64 SKEIN_512_IV_512[] = {
MK_64(0x4903ADFF, 0x749C51CE),
MK_64(0x0D95DE39, 0x9746DF03),
MK_64(0x8FD19341, 0x27C79BCE),
MK_64(0xEABE394C, 0xA9D5C3F4),
MK_64(0x991112C7, 0x1A75B523),
MK_64(0xAE18A40B, 0x660FCC33)
- };
+};
/* blkSize = 1024 bits. hashSize = 384 bits */
-const u64 SKEIN1024_IV_384[] =
- {
+const u64 SKEIN1024_IV_384[] = {
MK_64(0x5102B6B8, 0xC1894A35),
MK_64(0xFEEBC9E3, 0xFE8AF11A),
MK_64(0x0C807F06, 0xE32BED71),
MK_64(0x3B5A6530, 0x0DBC6516),
MK_64(0x484B9CD2, 0x167BBCE1),
MK_64(0x2D136947, 0xD4CBAFEA)
- };
+};
/* blkSize = 1024 bits. hashSize = 512 bits */
-const u64 SKEIN1024_IV_512[] =
- {
+const u64 SKEIN1024_IV_512[] = {
MK_64(0xCAEC0E5D, 0x7C1B1B18),
MK_64(0xA01B0E04, 0x5F03E802),
MK_64(0x33840451, 0xED912885),
MK_64(0x67070872, 0x5B749816),
MK_64(0xB9CD28FB, 0xF0581BD1),
MK_64(0x0E2940B8, 0x15804974)
- };
+};
/* blkSize = 1024 bits. hashSize = 1024 bits */
-const u64 SKEIN1024_IV_1024[] =
- {
+const u64 SKEIN1024_IV_1024[] = {
MK_64(0xD593DA07, 0x41E72355),
MK_64(0x15B5E511, 0xAC73E00C),
MK_64(0x5180E5AE, 0xBAF2C4F0),
MK_64(0x6572DD22, 0xF2B4969A),
MK_64(0x61FD3062, 0xD00A579A),
MK_64(0x1DE0536E, 0x8682E539)
- };
+};
#endif /* _SKEIN_IV_H_ */
/* init the context for a straight hashing operation */
int Skein_256_Init(struct skein_256_ctx *ctx, size_t hashBitLen)
{
- union
- {
+ union {
u8 b[SKEIN_256_STATE_BYTES];
u64 w[SKEIN_256_STATE_WORDS];
} cfg; /* config block */
Skein_Assert(hashBitLen > 0, SKEIN_BAD_HASHLEN);
ctx->h.hashBitLen = hashBitLen; /* output hash bit count */
- switch (hashBitLen)
- { /* use pre-computed values, where available */
+ switch (hashBitLen) { /* use pre-computed values, where available */
case 256:
memcpy(ctx->X, SKEIN_256_IV_256, sizeof(ctx->X));
break;
int Skein_256_InitExt(struct skein_256_ctx *ctx, size_t hashBitLen,
u64 treeInfo, const u8 *key, size_t keyBytes)
{
- union
- {
+ union {
u8 b[SKEIN_256_STATE_BYTES];
u64 w[SKEIN_256_STATE_WORDS];
} cfg; /* config block */
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? */
/* 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 */
/* set output hash bit count = state size */
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 (msgByteCnt + ctx->h.bCnt > SKEIN_256_BLOCK_BYTES) {
/* finish up any buffered message data */
- if (ctx->h.bCnt)
- {
+ if (ctx->h.bCnt) {
/* # bytes free in buffer b[] */
n = SKEIN_256_BLOCK_BYTES - ctx->h.bCnt;
- if (n)
- {
+ if (n) {
/* check on our logic here */
Skein_assert(n < msgByteCnt);
memcpy(&ctx->b[ctx->h.bCnt], msg, n);
* now process any remaining full blocks, directly from input
* message data
*/
- if (msgByteCnt > SKEIN_256_BLOCK_BYTES)
- {
+ if (msgByteCnt > SKEIN_256_BLOCK_BYTES) {
/* number of full blocks to process */
n = (msgByteCnt-1) / SKEIN_256_BLOCK_BYTES;
Skein_256_Process_Block(ctx, msg, n,
}
/* copy any remaining source message data bytes into b[] */
- if (msgByteCnt)
- {
+ if (msgByteCnt) {
Skein_assert(msgByteCnt + ctx->h.bCnt <= SKEIN_256_BLOCK_BYTES);
memcpy(&ctx->b[ctx->h.bCnt], msg, msgByteCnt);
ctx->h.bCnt += msgByteCnt;
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++)
- {
+ for (i = 0; i*SKEIN_256_BLOCK_BYTES < byteCnt; i++) {
/* build the counter block */
((u64 *)ctx->b)[0] = Skein_Swap64((u64) i);
Skein_Start_New_Type(ctx, OUT_FINAL);
/* init the context for a straight hashing operation */
int Skein_512_Init(struct skein_512_ctx *ctx, size_t hashBitLen)
{
- union
- {
+ union {
u8 b[SKEIN_512_STATE_BYTES];
u64 w[SKEIN_512_STATE_WORDS];
} cfg; /* config block */
Skein_Assert(hashBitLen > 0, SKEIN_BAD_HASHLEN);
ctx->h.hashBitLen = hashBitLen; /* output hash bit count */
- switch (hashBitLen)
- { /* use pre-computed values, where available */
+ switch (hashBitLen) { /* use pre-computed values, where available */
case 512:
memcpy(ctx->X, SKEIN_512_IV_512, sizeof(ctx->X));
break;
int Skein_512_InitExt(struct skein_512_ctx *ctx, size_t hashBitLen,
u64 treeInfo, const u8 *key, size_t keyBytes)
{
- union
- {
+ union {
u8 b[SKEIN_512_STATE_BYTES];
u64 w[SKEIN_512_STATE_WORDS];
} cfg; /* config block */
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? */
/* 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 */
/* set output hash bit count = state size */
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 (msgByteCnt + ctx->h.bCnt > SKEIN_512_BLOCK_BYTES) {
/* finish up any buffered message data */
- if (ctx->h.bCnt)
- {
+ if (ctx->h.bCnt) {
/* # bytes free in buffer b[] */
n = SKEIN_512_BLOCK_BYTES - ctx->h.bCnt;
- if (n)
- {
+ if (n) {
/* check on our logic here */
Skein_assert(n < msgByteCnt);
memcpy(&ctx->b[ctx->h.bCnt], msg, n);
* now process any remaining full blocks, directly from input
* message data
*/
- if (msgByteCnt > SKEIN_512_BLOCK_BYTES)
- {
+ if (msgByteCnt > SKEIN_512_BLOCK_BYTES) {
/* number of full blocks to process */
n = (msgByteCnt-1) / SKEIN_512_BLOCK_BYTES;
Skein_512_Process_Block(ctx, msg, n,
}
/* copy any remaining source message data bytes into b[] */
- if (msgByteCnt)
- {
+ if (msgByteCnt) {
Skein_assert(msgByteCnt + ctx->h.bCnt <= SKEIN_512_BLOCK_BYTES);
memcpy(&ctx->b[ctx->h.bCnt], msg, msgByteCnt);
ctx->h.bCnt += msgByteCnt;
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_512_BLOCK_BYTES < byteCnt; i++)
- {
+ for (i = 0; i*SKEIN_512_BLOCK_BYTES < byteCnt; i++) {
/* build the counter block */
((u64 *)ctx->b)[0] = Skein_Swap64((u64) i);
Skein_Start_New_Type(ctx, OUT_FINAL);
/* init the context for a straight hashing operation */
int Skein1024_Init(struct skein1024_ctx *ctx, size_t hashBitLen)
{
- union
- {
+ union {
u8 b[SKEIN1024_STATE_BYTES];
u64 w[SKEIN1024_STATE_WORDS];
} cfg; /* config block */
Skein_Assert(hashBitLen > 0, SKEIN_BAD_HASHLEN);
ctx->h.hashBitLen = hashBitLen; /* output hash bit count */
- switch (hashBitLen)
- { /* use pre-computed values, where available */
+ switch (hashBitLen) { /* use pre-computed values, where available */
case 512:
memcpy(ctx->X, SKEIN1024_IV_512, sizeof(ctx->X));
break;
int Skein1024_InitExt(struct skein1024_ctx *ctx, size_t hashBitLen,
u64 treeInfo, const u8 *key, size_t keyBytes)
{
- union
- {
+ union {
u8 b[SKEIN1024_STATE_BYTES];
u64 w[SKEIN1024_STATE_WORDS];
} cfg; /* config block */
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? */
/* 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 */
/* set output hash bit count = state size */
Skein_Assert(ctx->h.bCnt <= SKEIN1024_BLOCK_BYTES, SKEIN_FAIL);
/* process full blocks, if any */
- if (msgByteCnt + ctx->h.bCnt > SKEIN1024_BLOCK_BYTES)
- {
+ if (msgByteCnt + ctx->h.bCnt > SKEIN1024_BLOCK_BYTES) {
/* finish up any buffered message data */
- if (ctx->h.bCnt)
- {
+ if (ctx->h.bCnt) {
/* # bytes free in buffer b[] */
n = SKEIN1024_BLOCK_BYTES - ctx->h.bCnt;
- if (n)
- {
+ if (n) {
/* check on our logic here */
Skein_assert(n < msgByteCnt);
memcpy(&ctx->b[ctx->h.bCnt], msg, n);
* now process any remaining full blocks, directly from input
* message data
*/
- if (msgByteCnt > SKEIN1024_BLOCK_BYTES)
- {
+ if (msgByteCnt > SKEIN1024_BLOCK_BYTES) {
/* number of full blocks to process */
n = (msgByteCnt-1) / SKEIN1024_BLOCK_BYTES;
Skein1024_Process_Block(ctx, msg, n,
}
/* copy any remaining source message data bytes into b[] */
- if (msgByteCnt)
- {
+ if (msgByteCnt) {
Skein_assert(msgByteCnt + ctx->h.bCnt <= SKEIN1024_BLOCK_BYTES);
memcpy(&ctx->b[ctx->h.bCnt], msg, msgByteCnt);
ctx->h.bCnt += msgByteCnt;
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*SKEIN1024_BLOCK_BYTES < byteCnt; i++)
- {
+ for (i = 0; i*SKEIN1024_BLOCK_BYTES < byteCnt; i++) {
/* build the counter block */
((u64 *)ctx->b)[0] = Skein_Swap64((u64) i);
Skein_Start_New_Type(ctx, OUT_FINAL);
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++)
- {
+ for (i = 0; i*SKEIN_256_BLOCK_BYTES < byteCnt; i++) {
/* build the counter block */
((u64 *)ctx->b)[0] = Skein_Swap64((u64) i);
Skein_Start_New_Type(ctx, OUT_FINAL);
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_512_BLOCK_BYTES < byteCnt; i++)
- {
+ for (i = 0; i*SKEIN_512_BLOCK_BYTES < byteCnt; i++) {
/* build the counter block */
((u64 *)ctx->b)[0] = Skein_Swap64((u64) i);
Skein_Start_New_Type(ctx, OUT_FINAL);
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*SKEIN1024_BLOCK_BYTES < byteCnt; i++)
- {
+ for (i = 0; i*SKEIN1024_BLOCK_BYTES < byteCnt; i++) {
/* build the counter block */
((u64 *)ctx->b)[0] = Skein_Swap64((u64) i);
Skein_Start_New_Type(ctx, OUT_FINAL);
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