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C++ Ch函数代码示例

本文整理汇总了C++中Ch函数的典型用法代码示例。如果您正苦于以下问题:C++ Ch函数的具体用法?C++ Ch怎么用?C++ Ch使用的例子?那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。


在下文中一共展示了Ch函数的15个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: sha256_transform

// Transform one block and update state.
// State is in native byte order, data is big endian.
void sha256_transform(uint32_t state[8], const uint32_t data[16])
{
    uint32_t T[20];
    uint32_t W[32];
    unsigned int i = 0, j = 0;
    uint32_t *t = T+8;

    memcpy(t, state, 32);
    uint32_t e = t[4], a = t[0];

    do 
    {
        uint32_t w = be32_to_cpu(data[j]);
        W[j] = w;
        w += SHA256_K_GET(j);
        w += t[7];
        w += S1(e);
        w += Ch(e, t[5], t[6]);
        e = t[3] + w;
        t[3] = t[3+8] = e;
        w += S0(t[0]);
        a = w + Maj(a, t[1], t[2]);
        t[-1] = t[7] = a;
        --t;
        ++j;
        if (j%8 == 0)
            t += 8;
    } while (j<16);

    do
    {
        i = j & 0xf;
        uint32_t w = s1(W[i+16-2]) + s0(W[i+16-15]) + W[i] + W[i+16-7];
        W[i+16] = W[i] = w;
        w += SHA256_K_GET(j);
        w += t[7];
        w += S1(e);
        w += Ch(e, t[5], t[6]);
        e = t[3] + w;
        t[3] = t[3+8] = e;
        w += S0(t[0]);
        a = w + Maj(a, t[1], t[2]);
        t[-1] = t[7] = a;

        w = s1(W[(i+1)+16-2]) + s0(W[(i+1)+16-15]) + W[(i+1)] + W[(i+1)+16-7];
        W[(i+1)+16] = W[(i+1)] = w;
        w += SHA256_K_GET(j+1);
        w += (t-1)[7];
        w += S1(e);
        w += Ch(e, (t-1)[5], (t-1)[6]);
        e = (t-1)[3] + w;
        (t-1)[3] = (t-1)[3+8] = e;
        w += S0((t-1)[0]);
        a = w + Maj(a, (t-1)[1], (t-1)[2]);
        (t-1)[-1] = (t-1)[7] = a;

        t -= 2;
        j += 2;
        if (j % 8 == 0)
            t += 8;
    } while (j<64);

    state[0] += a;
    state[1] += t[1];
    state[2] += t[2];
    state[3] += t[3];
    state[4] += e;
    state[5] += t[5];
    state[6] += t[6];
    state[7] += t[7];
}
开发者ID:biddyweb,项目名称:entropy,代码行数:73,代码来源:sha256.c

示例2: print_cdata_node

 inline OutIt print_cdata_node(OutIt out, const xml_node<Ch> *node, int flags, int indent)
 {
     assert(node->type() == node_cdata);
     if (!(flags & print_no_indenting))
         out = fill_chars(out, indent, Ch('\t'));
     *out = Ch('<'); ++out;
     *out = Ch('!'); ++out;
     *out = Ch('['); ++out;
     *out = Ch('C'); ++out;
     *out = Ch('D'); ++out;
     *out = Ch('A'); ++out;
     *out = Ch('T'); ++out;
     *out = Ch('A'); ++out;
     *out = Ch('['); ++out;
     out = copy_chars(node->value(), node->value() + node->value_size(), out);
     *out = Ch(']'); ++out;
     *out = Ch(']'); ++out;
     *out = Ch('>'); ++out;
     return out;
 }
开发者ID:281627166,项目名称:NoahGameFrame,代码行数:20,代码来源:rapidxml_print.hpp

示例3: copy_and_expand_chars

 inline OutIt copy_and_expand_chars(const Ch *begin, const Ch *end, Ch noexpand, OutIt out)
 {
     while (begin != end)
     {
         if (*begin == noexpand)
         {
             *out++ = *begin;    // No expansion, copy character
         }
         else
         {
             switch (*begin)
             {
             case Ch('<'):
                 *out++ = Ch('&'); *out++ = Ch('l'); *out++ = Ch('t'); *out++ = Ch(';');
                 break;
             case Ch('>'):
                 *out++ = Ch('&'); *out++ = Ch('g'); *out++ = Ch('t'); *out++ = Ch(';');
                 break;
             case Ch('\''):
                 *out++ = Ch('&'); *out++ = Ch('a'); *out++ = Ch('p'); *out++ = Ch('o'); *out++ = Ch('s'); *out++ = Ch(';');
                 break;
             case Ch('"'):
                 *out++ = Ch('&'); *out++ = Ch('q'); *out++ = Ch('u'); *out++ = Ch('o'); *out++ = Ch('t'); *out++ = Ch(';');
                 break;
             case Ch('&'):
                 *out++ = Ch('&'); *out++ = Ch('a'); *out++ = Ch('m'); *out++ = Ch('p'); *out++ = Ch(';');
                 break;
             default:
                 *out++ = *begin;    // No expansion, copy character
             }
         }
         ++begin;    // Step to next character
     }
     return out;
 }
开发者ID:281627166,项目名称:NoahGameFrame,代码行数:35,代码来源:rapidxml_print.hpp

示例4: sha256_block_data_order

static void sha256_block_data_order(SHA256_CTX *ctx, const void *in,
                                    size_t num)
{
    unsigned MD32_REG_T a, b, c, d, e, f, g, h, s0, s1, T1, T2;
    SHA_LONG X[16], l;
    int i;
    const unsigned char *data = in;

    while (num--) {

        a = ctx->h[0];
        b = ctx->h[1];
        c = ctx->h[2];
        d = ctx->h[3];
        e = ctx->h[4];
        f = ctx->h[5];
        g = ctx->h[6];
        h = ctx->h[7];

        for (i = 0; i < 16; i++) {
            HOST_c2l(data, l);
            T1 = X[i] = l;
            T1 += h + Sigma1(e) + Ch(e, f, g) + K256[i];
            T2 = Sigma0(a) + Maj(a, b, c);
            h = g;
            g = f;
            f = e;
            e = d + T1;
            d = c;
            c = b;
            b = a;
            a = T1 + T2;
        }

        for (; i < 64; i++) {
            s0 = X[(i + 1) & 0x0f];
            s0 = sigma0(s0);
            s1 = X[(i + 14) & 0x0f];
            s1 = sigma1(s1);

            T1 = X[i & 0xf] += s0 + s1 + X[(i + 9) & 0xf];
            T1 += h + Sigma1(e) + Ch(e, f, g) + K256[i];
            T2 = Sigma0(a) + Maj(a, b, c);
            h = g;
            g = f;
            f = e;
            e = d + T1;
            d = c;
            c = b;
            b = a;
            a = T1 + T2;
        }

        ctx->h[0] += a;
        ctx->h[1] += b;
        ctx->h[2] += c;
        ctx->h[3] += d;
        ctx->h[4] += e;
        ctx->h[5] += f;
        ctx->h[6] += g;
        ctx->h[7] += h;

    }
}
开发者ID:bbidd985,项目名称:IEEE_Taggant_System,代码行数:64,代码来源:sha256.c

示例5: ccsha512_ltc_compress

/* compress 1024-bits */
void ccsha512_ltc_compress(ccdigest_state_t state, unsigned long nblocks, const void *in)
{
    uint64_t S[8], W[80], t0, t1;
    int i;
    uint64_t *s = ccdigest_u64(state);
    const unsigned char *buf = in;

    while(nblocks--) {
        /* copy state into S */
        for (i = 0; i < 8; i++) {
            S[i] = s[i];
        }

        /* copy the state into 1024-bits into W[0..15] */
        for (i = 0; i < 16; i++) {
            CC_LOAD64_BE(W[i], buf + (8*i));
        }

        /* fill W[16..79] */
        for (i = 16; i < 80; i++) {
            W[i] = Gamma1(W[i - 2]) + W[i - 7] + Gamma0(W[i - 15]) + W[i - 16];
        }

        /* Compress */
    #ifdef CC_SMALL_CODE
        for (i = 0; i < 80; i++) {
            t0 = S[7] + Sigma1(S[4]) + Ch(S[4], S[5], S[6]) + K[i] + W[i];
            t1 = Sigma0(S[0]) + Maj(S[0], S[1], S[2]);
            S[7] = S[6];
            S[6] = S[5];
            S[5] = S[4];
            S[4] = S[3] + t0;
            S[3] = S[2];
            S[2] = S[1];
            S[1] = S[0];
            S[0] = t0 + t1;
        }
    #else
    #define RND(a,b,c,d,e,f,g,h,i)                    \
         t0 = h + Sigma1(e) + Ch(e, f, g) + K[i] + W[i];   \
         t1 = Sigma0(a) + Maj(a, b, c);                  \
         d += t0;                                        \
         h  = t0 + t1;

         for (i = 0; i < 80; i += 8) {
             RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],i+0);
             RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],i+1);
             RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],i+2);
             RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],i+3);
             RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],i+4);
             RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],i+5);
             RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],i+6);
             RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],i+7);
         }
    #endif


        /* feedback */
        for (i = 0; i < 8; i++) {
            s[i] = s[i] + S[i];
        }

        buf+=CCSHA512_BLOCK_SIZE;
    }
}
开发者ID:randombit,项目名称:hacrypto,代码行数:66,代码来源:ccsha512_ltc_compress.c

示例6: operator

 void operator()(unsigned long u) const
 {
     u = (std::min)(u, static_cast<unsigned long>((std::numeric_limits<Ch>::max)()));
     c.string += Ch(u);
 }
开发者ID:0xDEC0DE8,项目名称:mcsema,代码行数:5,代码来源:json_parser_read.hpp

示例7: xml_writer_make_settings

 xml_writer_settings<Ch> xml_writer_make_settings(Ch indent_char = Ch(' '),
     typename std::basic_string<Ch>::size_type indent_count = 0,
     const std::basic_string<Ch> &encoding = widen<Ch>("utf-8"))
 {
     return xml_writer_settings<Ch>(indent_char, indent_count, encoding);
 }
开发者ID:00liujj,项目名称:dealii,代码行数:6,代码来源:xml_parser_writer_settings.hpp

示例8: sha256_transform

static void sha256_transform(uint32_t *state, const uint8_t buffer[64])
{
    unsigned int i, a, b, c, d, e, f, g, h;
    uint32_t block[64];
    uint32_t T1;

    a = state[0];
    b = state[1];
    c = state[2];
    d = state[3];
    e = state[4];
    f = state[5];
    g = state[6];
    h = state[7];
#if CONFIG_SMALL
    for (i = 0; i < 64; i++) {
        uint32_t T2;
        if (i < 16)
            T1 = blk0(i);
        else
            T1 = blk(i);
        T1 += h + Sigma1_256(e) + Ch(e, f, g) + K256[i];
        T2 = Sigma0_256(a) + Maj(a, b, c);
        h = g;
        g = f;
        f = e;
        e = d + T1;
        d = c;
        c = b;
        b = a;
        a = T1 + T2;
    }
#else

    i = 0;
#define R256_0 \
    ROUND256_0_TO_15(a, b, c, d, e, f, g, h); \
    ROUND256_0_TO_15(h, a, b, c, d, e, f, g); \
    ROUND256_0_TO_15(g, h, a, b, c, d, e, f); \
    ROUND256_0_TO_15(f, g, h, a, b, c, d, e); \
    ROUND256_0_TO_15(e, f, g, h, a, b, c, d); \
    ROUND256_0_TO_15(d, e, f, g, h, a, b, c); \
    ROUND256_0_TO_15(c, d, e, f, g, h, a, b); \
    ROUND256_0_TO_15(b, c, d, e, f, g, h, a)

    R256_0; R256_0;

#define R256_16 \
    ROUND256_16_TO_63(a, b, c, d, e, f, g, h); \
    ROUND256_16_TO_63(h, a, b, c, d, e, f, g); \
    ROUND256_16_TO_63(g, h, a, b, c, d, e, f); \
    ROUND256_16_TO_63(f, g, h, a, b, c, d, e); \
    ROUND256_16_TO_63(e, f, g, h, a, b, c, d); \
    ROUND256_16_TO_63(d, e, f, g, h, a, b, c); \
    ROUND256_16_TO_63(c, d, e, f, g, h, a, b); \
    ROUND256_16_TO_63(b, c, d, e, f, g, h, a)

    R256_16; R256_16; R256_16;
    R256_16; R256_16; R256_16;
#endif
    state[0] += a;
    state[1] += b;
    state[2] += c;
    state[3] += d;
    state[4] += e;
    state[5] += f;
    state[6] += g;
    state[7] += h;
}
开发者ID:18565773346,项目名称:android-h264-decoder,代码行数:69,代码来源:sha.c

示例9: block

/*
========================================================================
Routine Description:
    SHA1 computation for one block (512 bits)

Arguments:
    pSHA_CTX        Pointer to SHA1_CTX_STRUC

Return Value:
    None

Note:
    None
========================================================================
*/
VOID RT_SHA1_Hash (
    IN  SHA1_CTX_STRUC *pSHA_CTX)
{
    uint32_t W_i,t;
    uint32_t W[80];
    uint32_t a,b,c,d,e,T,f_t = 0;

    /* Prepare the message schedule, {W_i}, 0 < t < 15 */
    memmove(W, pSHA_CTX->Block, SHA1_BLOCK_SIZE);
    for (W_i = 0; W_i < 16; W_i++) {
        W[W_i] = cpu2be32(W[W_i]); /* Endian Swap */
    } /* End of for */

    for (W_i = 16; W_i < 80; W_i++) {
        W[W_i] = ROTL32((W[W_i - 3] ^ W[W_i - 8] ^ W[W_i - 14] ^ W[W_i - 16]),1);
    } /* End of for */


    /* SHA256 hash computation */
    /* Initialize the working variables */
    a = pSHA_CTX->HashValue[0];
    b = pSHA_CTX->HashValue[1];
    c = pSHA_CTX->HashValue[2];
    d = pSHA_CTX->HashValue[3];
    e = pSHA_CTX->HashValue[4];

    /* 80 rounds */
    for (t = 0;t < 20;t++) {
        f_t = Ch(b,c,d);
        T = ROTL32(a,5) + f_t + e + SHA1_K[0] + W[t];
        e = d;
        d = c;
        c = ROTL32(b,30);
        b = a;
        a = T;
     } /* End of for */
    for (t = 20;t < 40;t++) {
        f_t = Parity(b,c,d);
        T = ROTL32(a,5) + f_t + e + SHA1_K[1] + W[t];
        e = d;
        d = c;
        c = ROTL32(b,30);
        b = a;
        a = T;
     } /* End of for */
    for (t = 40;t < 60;t++) {
        f_t = Maj(b,c,d);
        T = ROTL32(a,5) + f_t + e + SHA1_K[2] + W[t];
        e = d;
        d = c;
        c = ROTL32(b,30);
        b = a;
        a = T;
     } /* End of for */
    for (t = 60;t < 80;t++) {
        f_t = Parity(b,c,d);
        T = ROTL32(a,5) + f_t + e + SHA1_K[3] + W[t];
        e = d;
        d = c;
        c = ROTL32(b,30);
        b = a;
        a = T;
     } /* End of for */


     /* Compute the i^th intermediate hash value H^(i) */
     pSHA_CTX->HashValue[0] += a;
     pSHA_CTX->HashValue[1] += b;
     pSHA_CTX->HashValue[2] += c;
     pSHA_CTX->HashValue[3] += d;
     pSHA_CTX->HashValue[4] += e;

    memset(pSHA_CTX->Block, 0, SHA1_BLOCK_SIZE);
    pSHA_CTX->BlockLen = 0;
} /* End of RT_SHA1_Hash */
开发者ID:ulli-kroll,项目名称:mt7612u,代码行数:90,代码来源:crypt_sha2.c

示例10: info_writer_settings

 info_writer_settings(Ch indent_char = Ch(' '), unsigned indent_count = 4):
     indent_char(indent_char),
     indent_count(indent_count)
 {
 }
开发者ID:alistairwalsh,项目名称:LSL-gazzlab-branch,代码行数:5,代码来源:info_parser_writer_settings.hpp

示例11: info_writer_make_settings

 info_writer_settings<Ch> info_writer_make_settings(Ch indent_char = Ch(' '), unsigned indent_count = 4)
 {
     return info_writer_settings<Ch>(indent_char, indent_count);
 }
开发者ID:alistairwalsh,项目名称:LSL-gazzlab-branch,代码行数:4,代码来源:info_parser_writer_settings.hpp

示例12: main

int main(int argc, char* argv[]) {
    if(argc < 2) {
        printf("Usage: sha256 <string>\n");
        return 0;
    }

    // 4.2.2
    uint32_t K[] = {
        0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
        0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
        0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
        0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
        0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
        0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
        0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
        0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
    };

    // 5.3.2
    uint32_t H[] = {
        0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19
    };

    char* msg = argv[1];
    size_t len = strlen(msg);

    // 5.1.1
    uint64_t l = len * sizeof(char) * 8;
    size_t k = (448 - l - 1) % 512;
    if(k < 0) k += 512;
    assert((l+1+k) % 512 == 448);

    size_t msgSize = l + 1 + k + 64;

    char* msgPad = (char*)calloc((msgSize / 8), sizeof(char));
    memcpy(msgPad, msg, len);
    msgPad[len] = 0x80;
    l = swapE64(l);
    memcpy(msgPad+(msgSize/8)-8, &l, 8);

    // 5.2.1
    size_t N = msgSize / 512;

    // 6.2
    uint32_t v[8];
    uint32_t W[64];
    uint32_t* M = (uint32_t*)msgPad;
    uint32_t T1, T2;

    for(size_t i = 0; i < N * 16; i++) {
        M[i] = swapE32(M[i]);
    }

    // 6.2.2
    for(size_t i = 0; i < N; i++) {
        // 1
        for(size_t t = 0; t < 16; t++) {
            W[t] = M[i*16 + t];
        }
        for(size_t t = 16; t < 64; t++) {
            W[t] = sig1(W[t-2]) + W[t-7] + sig0(W[t-15]) + W[t-16];
        }

        // 2
        for(size_t t = 0; t < 8; t++) {
            v[t] = H[t];
        }

        // 3
        for(size_t t = 0; t < 64; t++) {
            // a=0 b=1 c=2 d=3 e=4 f=5 g=6 h=7
            T1 = v[7] + ep1(v[4]) + Ch(v[4], v[5], v[6]) + K[t] + W[t];
            T2 = ep0(v[0]) + Maj(v[0], v[1], v[2]);

            v[7] = v[6];
            v[6] = v[5];
            v[5] = v[4];
            v[4] = v[3] + T1;
            v[3] = v[2];
            v[2] = v[1];
            v[1] = v[0];
            v[0] = T1 + T2;
        }

        for(size_t t = 0; t < 8; t++) {
            H[t] += v[t];
        }
    }

    for(size_t i = 0; i < 8; i++) {
        H[i] = swapE32(H[i]);
        hex(&H[i], 4);
    }
    printf("\n");

    free(msgPad);
    return 0;
}
开发者ID:noryb009,项目名称:sha256,代码行数:98,代码来源:sha256.c

示例13: GetTopCtrl

void AssistEditor::SyncParamInfo()
{
	String qtf;
	Ctrl *p = GetTopCtrl();
	int mpar = INT_MAX;
	int pos = 0;
	if(p && p->HasFocusDeep()) {
		for(int q = 0; q < PARAMN; q++) {
			ParamInfo& m = param[q];
			int i = GetCursorLine();
			if(m.line >= 0 && m.line < GetLineCount() && i >= m.line && i < m.line + 10
			   && m.editfile == theide->editfile && GetWLine(m.line).StartsWith(m.test)) {
				int c = GetCursor();
				i = GetPos(m.line) + m.test.GetCount();
				if(c >= i) {
					int par = 0;
					int pari = 0;
					for(;;) {
						int ch = Ch(i++);
						if(i > c) {
							if(par < mpar) {
								qtf = "[A1  " + DecoratedItem(m.item.name, m.item, m.item.natural, pari);
								mpar = par;
								pos = m.pos;
							}
							break;
						}
						if(ch == ')') {
							if(par <= 0)
								break;
							par--;
						}
						if(ch == '(')
							par++;
						if(ch == ',' && par == 0)
							pari++;
					}
				}
			}
		}
	}
	if(param_qtf != qtf)
		param_info.SetQTF(qtf);
	Rect r = GetLineScreenRect(GetCursorLine());
	int cx = max(GetSize().cx - 30, 300);
	int h = param_info.GetHeight(cx);
	h = min(h, 550);
	int y = r.top - h - 6;
	if(y < GetWorkArea().top)
		y = r.bottom;
	r = RectC(r.left, y, min(param_info.GetWidth(), cx) + 8, h + 6);
	r.OffsetHorz(GetColumnLine(pos).x * GetFontSize().cx);
	r.OffsetHorz(min(GetWorkArea().right - r.right, 0));
	if(param_qtf != qtf || r != param_info.GetRect()) {
		param_qtf = qtf;
		if(IsNull(qtf)) {
			if(param_info.IsOpen())
				param_info.Close();
		}
		else {
			param_info.SetRect(r);
			if(!param_info.IsOpen() && !IsSelection())
				param_info.Ctrl::PopUp(this, false, false, false);
		}
	}
}
开发者ID:dreamsxin,项目名称:ultimatepp,代码行数:66,代码来源:ParamInfo.cpp

示例14: transform


//.........这里部分代码省略.........
    for (i = 0, p2 = (byte *) w; i < 16; i++, p2 += 8)
      {
	p2[7] = *data++;
	p2[6] = *data++;
	p2[5] = *data++;
	p2[4] = *data++;
	p2[3] = *data++;
	p2[2] = *data++;
	p2[1] = *data++;
	p2[0] = *data++;
      }
  }
#endif

#define S0(x) (ROTR((x),1) ^ ROTR((x),8) ^ ((x)>>7))
#define S1(x) (ROTR((x),19) ^ ROTR((x),61) ^ ((x)>>6))

  for (t = 16; t < 80; t++)
    w[t] = S1 (w[t - 2]) + w[t - 7] + S0 (w[t - 15]) + w[t - 16];


  for (t = 0; t < 80; )
    {
      u64 t1, t2;

      /* Performance on a AMD Athlon(tm) Dual Core Processor 4050e
         with gcc 4.3.3 using gcry_md_hash_buffer of each 10000 bytes
         initialized to 0,1,2,3...255,0,... and 1000 iterations:

         Not unrolled with macros:  440ms
         Unrolled with macros:      350ms
         Unrolled with inline:      330ms
      */
#if 0 /* Not unrolled.  */
      t1 = h + Sum1 (e) + Ch (e, f, g) + k[t] + w[t];
      t2 = Sum0 (a) + Maj (a, b, c);
      h = g;
      g = f;
      f = e;
      e = d + t1;
      d = c;
      c = b;
      b = a;
      a = t1 + t2;
      t++;
#else /* Unrolled to interweave the chain variables.  */
      t1 = h + Sum1 (e) + Ch (e, f, g) + k[t] + w[t];
      t2 = Sum0 (a) + Maj (a, b, c);
      d += t1;
      h  = t1 + t2;

      t1 = g + Sum1 (d) + Ch (d, e, f) + k[t+1] + w[t+1];
      t2 = Sum0 (h) + Maj (h, a, b);
      c += t1;
      g  = t1 + t2;

      t1 = f + Sum1 (c) + Ch (c, d, e) + k[t+2] + w[t+2];
      t2 = Sum0 (g) + Maj (g, h, a);
      b += t1;
      f  = t1 + t2;

      t1 = e + Sum1 (b) + Ch (b, c, d) + k[t+3] + w[t+3];
      t2 = Sum0 (f) + Maj (f, g, h);
      a += t1;
      e  = t1 + t2;

      t1 = d + Sum1 (a) + Ch (a, b, c) + k[t+4] + w[t+4];
      t2 = Sum0 (e) + Maj (e, f, g);
      h += t1;
      d  = t1 + t2;

      t1 = c + Sum1 (h) + Ch (h, a, b) + k[t+5] + w[t+5];
      t2 = Sum0 (d) + Maj (d, e, f);
      g += t1;
      c  = t1 + t2;

      t1 = b + Sum1 (g) + Ch (g, h, a) + k[t+6] + w[t+6];
      t2 = Sum0 (c) + Maj (c, d, e);
      f += t1;
      b  = t1 + t2;

      t1 = a + Sum1 (f) + Ch (f, g, h) + k[t+7] + w[t+7];
      t2 = Sum0 (b) + Maj (b, c, d);
      e += t1;
      a  = t1 + t2;
      
      t += 8;
#endif
    }

  /* Update chaining vars.  */
  hd->h0 += a;
  hd->h1 += b;
  hd->h2 += c;
  hd->h3 += d;
  hd->h4 += e;
  hd->h5 += f;
  hd->h6 += g;
  hd->h7 += h;
}
开发者ID:0xmono,项目名称:miranda-ng,代码行数:101,代码来源:sha512.c

示例15: sha512_compress

static int  sha512_compress(hash_state * md, const unsigned char *buf)
#endif
{
    ulong64 S[8], W[80], t0, t1;
    int i;

    /* copy state into S */
    for (i = 0; i < 8; i++) {
        S[i] = md->sha512.state[i];
    }

    /* copy the state into 1024-bits into W[0..15] */
    for (i = 0; i < 16; i++) {
        LOAD64H(W[i], buf + (8*i));
    }

    /* fill W[16..79] */
    for (i = 16; i < 80; i++) {
        W[i] = Gamma1(W[i - 2]) + W[i - 7] + Gamma0(W[i - 15]) + W[i - 16];
    }

    /* Compress */
#ifdef LTC_SMALL_CODE
    for (i = 0; i < 80; i++) {
        t0 = S[7] + Sigma1(S[4]) + Ch(S[4], S[5], S[6]) + K[i] + W[i];
        t1 = Sigma0(S[0]) + Maj(S[0], S[1], S[2]);
        S[7] = S[6];
        S[6] = S[5];
        S[5] = S[4];
        S[4] = S[3] + t0;
        S[3] = S[2];
        S[2] = S[1];
        S[1] = S[0];
        S[0] = t0 + t1;
    }
#else
#define RND(a,b,c,d,e,f,g,h,i)                    \
     t0 = h + Sigma1(e) + Ch(e, f, g) + K[i] + W[i];   \
     t1 = Sigma0(a) + Maj(a, b, c);                  \
     d += t0;                                        \
     h  = t0 + t1;

    for (i = 0; i < 80; i += 8) {
        RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],i+0);
        RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],i+1);
        RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],i+2);
        RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],i+3);
        RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],i+4);
        RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],i+5);
        RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],i+6);
        RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],i+7);
    }
#endif


    /* feedback */
    for (i = 0; i < 8; i++) {
        md->sha512.state[i] = md->sha512.state[i] + S[i];
    }

    return CRYPT_OK;
}
开发者ID:DCIT,项目名称:perl-CryptX,代码行数:62,代码来源:sha512.c


注:本文中的Ch函数示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。