72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek#include "lib.h"

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek#include "sha1.h"

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek#include "safe-memset.h"

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozekstatic uint32_t SHA1_K[] = { 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xca62c1d6 };

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek#define K(t) SHA1_K[(t) / 20]

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek#define F0(b, c, d) (((b) & (c)) | ((~(b)) & (d)))

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek#define F1(b, c, d) (((b) ^ (c)) ^ (d))

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek#define F2(b, c, d) (((b) & (c)) | ((b) & (d)) | ((c) & (d)))

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek#define F3(b, c, d) (((b) ^ (c)) ^ (d))

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek#define S(n, x) (((x) << (n)) | ((x) >> (32 - n)))

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek#define H(n) (ctxt->h.b32[(n)])

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek#define COUNT (ctxt->count)

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek#define BCOUNT (ctxt->c.b64[0] / 8)

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek#define W(n) (ctxt->m.b32[(n)])

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek#define PUTBYTE(x) { \

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek ctxt->m.b8[(COUNT % 64)] = (x); \

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek COUNT++; \

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek COUNT %= 64; \

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek ctxt->c.b64[0] += 8; \

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek if (COUNT % 64 == 0) \

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek sha1_step(ctxt); \

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek }

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek#define PUTPAD(x) { \

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek ctxt->m.b8[(COUNT % 64)] = (x); \

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek COUNT++; \

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek COUNT %= 64; \

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek if (COUNT % 64 == 0) \

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek sha1_step(ctxt); \

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek }

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozekstatic void sha1_step(struct sha1_ctxt *);

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozekstatic void

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozeksha1_step(struct sha1_ctxt *ctxt)

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek{

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek uint32_t a, b, c, d, e;

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek size_t t, s;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek uint32_t tmp;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek#if !WORDS_BIGENDIAN

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek struct sha1_ctxt tctxt;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek memmove(&tctxt.m.b8[0], &ctxt->m.b8[0], 64);

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[0] = tctxt.m.b8[3]; ctxt->m.b8[1] = tctxt.m.b8[2];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[2] = tctxt.m.b8[1]; ctxt->m.b8[3] = tctxt.m.b8[0];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[4] = tctxt.m.b8[7]; ctxt->m.b8[5] = tctxt.m.b8[6];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[6] = tctxt.m.b8[5]; ctxt->m.b8[7] = tctxt.m.b8[4];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[8] = tctxt.m.b8[11]; ctxt->m.b8[9] = tctxt.m.b8[10];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[10] = tctxt.m.b8[9]; ctxt->m.b8[11] = tctxt.m.b8[8];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[12] = tctxt.m.b8[15]; ctxt->m.b8[13] = tctxt.m.b8[14];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[14] = tctxt.m.b8[13]; ctxt->m.b8[15] = tctxt.m.b8[12];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[16] = tctxt.m.b8[19]; ctxt->m.b8[17] = tctxt.m.b8[18];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[18] = tctxt.m.b8[17]; ctxt->m.b8[19] = tctxt.m.b8[16];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[20] = tctxt.m.b8[23]; ctxt->m.b8[21] = tctxt.m.b8[22];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[22] = tctxt.m.b8[21]; ctxt->m.b8[23] = tctxt.m.b8[20];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[24] = tctxt.m.b8[27]; ctxt->m.b8[25] = tctxt.m.b8[26];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[26] = tctxt.m.b8[25]; ctxt->m.b8[27] = tctxt.m.b8[24];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[28] = tctxt.m.b8[31]; ctxt->m.b8[29] = tctxt.m.b8[30];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[30] = tctxt.m.b8[29]; ctxt->m.b8[31] = tctxt.m.b8[28];

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek ctxt->m.b8[32] = tctxt.m.b8[35]; ctxt->m.b8[33] = tctxt.m.b8[34];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[34] = tctxt.m.b8[33]; ctxt->m.b8[35] = tctxt.m.b8[32];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[36] = tctxt.m.b8[39]; ctxt->m.b8[37] = tctxt.m.b8[38];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[38] = tctxt.m.b8[37]; ctxt->m.b8[39] = tctxt.m.b8[36];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[40] = tctxt.m.b8[43]; ctxt->m.b8[41] = tctxt.m.b8[42];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[42] = tctxt.m.b8[41]; ctxt->m.b8[43] = tctxt.m.b8[40];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[44] = tctxt.m.b8[47]; ctxt->m.b8[45] = tctxt.m.b8[46];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[46] = tctxt.m.b8[45]; ctxt->m.b8[47] = tctxt.m.b8[44];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[48] = tctxt.m.b8[51]; ctxt->m.b8[49] = tctxt.m.b8[50];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[50] = tctxt.m.b8[49]; ctxt->m.b8[51] = tctxt.m.b8[48];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[52] = tctxt.m.b8[55]; ctxt->m.b8[53] = tctxt.m.b8[54];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[54] = tctxt.m.b8[53]; ctxt->m.b8[55] = tctxt.m.b8[52];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[56] = tctxt.m.b8[59]; ctxt->m.b8[57] = tctxt.m.b8[58];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[58] = tctxt.m.b8[57]; ctxt->m.b8[59] = tctxt.m.b8[56];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[60] = tctxt.m.b8[63]; ctxt->m.b8[61] = tctxt.m.b8[62];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->m.b8[62] = tctxt.m.b8[61]; ctxt->m.b8[63] = tctxt.m.b8[60];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek#endif

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek a = H(0); b = H(1); c = H(2); d = H(3); e = H(4);

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek for (t = 0; t < 20; t++) {

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek s = t & 0x0f;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek if (t >= 16) {

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^ W((s+2) & 0x0f) ^ W(s));

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek }

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek tmp = S(5, a) + F0(b, c, d) + e + W(s) + K(t);

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek e = d; d = c; c = S(30, b); b = a; a = tmp;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek }

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek for (t = 20; t < 40; t++) {

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek s = t & 0x0f;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^ W((s+2) & 0x0f) ^ W(s));

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek tmp = S(5, a) + F1(b, c, d) + e + W(s) + K(t);

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek e = d; d = c; c = S(30, b); b = a; a = tmp;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek }

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek for (t = 40; t < 60; t++) {

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek s = t & 0x0f;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^ W((s+2) & 0x0f) ^ W(s));

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek tmp = S(5, a) + F2(b, c, d) + e + W(s) + K(t);

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek e = d; d = c; c = S(30, b); b = a; a = tmp;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek }

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek for (t = 60; t < 80; t++) {

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek s = t & 0x0f;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^ W((s+2) & 0x0f) ^ W(s));

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek tmp = S(5, a) + F3(b, c, d) + e + W(s) + K(t);

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek e = d; d = c; c = S(30, b); b = a; a = tmp;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek }

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek H(0) = H(0) + a;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek H(1) = H(1) + b;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek H(2) = H(2) + c;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek H(3) = H(3) + d;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek H(4) = H(4) + e;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek memset(&ctxt->m.b8[0], 0, 64);

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek}

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozeksha1_init(struct sha1_ctxt *ctxt)

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek{

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek memset(ctxt, 0, sizeof(struct sha1_ctxt));

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek H(0) = 0x67452301;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek H(1) = 0xefcdab89;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek H(2) = 0x98badcfe;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek H(3) = 0x10325476;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek H(4) = 0xc3d2e1f0;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek}

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozeksha1_pad(struct sha1_ctxt *ctxt)

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek{

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek size_t padlen; /*pad length in bytes*/

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek size_t padstart;

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek PUTPAD(0x80);

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek padstart = COUNT % 64;

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek padlen = 64 - padstart;

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek if (padlen < 8) {

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek memset(&ctxt->m.b8[padstart], 0, padlen);

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek COUNT += padlen;

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek COUNT %= 64;

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek sha1_step(ctxt);

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek padstart = COUNT % 64; /* should be 0 */

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek padlen = 64 - padstart; /* should be 64 */

e2bd4f8a41b72aea0712ad21ad02ccebb707f536Stephen Gallagher }

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek memset(&ctxt->m.b8[padstart], 0, padlen - 8);

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek COUNT += (padlen - 8);

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek COUNT %= 64;

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek#if WORDS_BIGENDIAN

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek PUTPAD(ctxt->c.b8[0]); PUTPAD(ctxt->c.b8[1]);

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek PUTPAD(ctxt->c.b8[2]); PUTPAD(ctxt->c.b8[3]);

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek PUTPAD(ctxt->c.b8[4]); PUTPAD(ctxt->c.b8[5]);

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek PUTPAD(ctxt->c.b8[6]); PUTPAD(ctxt->c.b8[7]);

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek#else

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek PUTPAD(ctxt->c.b8[7]); PUTPAD(ctxt->c.b8[6]);

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek PUTPAD(ctxt->c.b8[5]); PUTPAD(ctxt->c.b8[4]);

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek PUTPAD(ctxt->c.b8[3]); PUTPAD(ctxt->c.b8[2]);

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek PUTPAD(ctxt->c.b8[1]); PUTPAD(ctxt->c.b8[0]);

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek#endif

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek}

4e5e846de22407f825fe3b4040d79606818a2419Jakub Hrozek

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozeksha1_loop(struct sha1_ctxt *ctxt, const void *input, size_t len)

4e5e846de22407f825fe3b4040d79606818a2419Jakub Hrozek{

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek const unsigned char *input_c = input;

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek size_t gaplen;

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek size_t gapstart;

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek size_t off;

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek size_t copysiz;

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek off = 0;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek while (off < len) {

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek gapstart = COUNT % 64;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek gaplen = 64 - gapstart;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek copysiz = (gaplen < len - off) ? gaplen : len - off;

4e5e846de22407f825fe3b4040d79606818a2419Jakub Hrozek memmove(&ctxt->m.b8[gapstart], &input_c[off], copysiz);

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek COUNT += copysiz;

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek COUNT %= 64;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek ctxt->c.b64[0] += copysiz * 8;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek if (COUNT % 64 == 0)

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek sha1_step(ctxt);

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek off += copysiz;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek }

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek}

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozeksha1_result(struct sha1_ctxt *ctxt, void *digest0)

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek{

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek uint8_t *digest;

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek digest = (uint8_t *)digest0;

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek sha1_pad(ctxt);

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek#if WORDS_BIGENDIAN

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek memmove(digest, &ctxt->h.b8[0], 20);

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek#else

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek digest[0] = ctxt->h.b8[3]; digest[1] = ctxt->h.b8[2];

51b5e1475b3e0b7acac34ed382cfaca8411883a4Jakub Hrozek digest[2] = ctxt->h.b8[1]; digest[3] = ctxt->h.b8[0];

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek digest[4] = ctxt->h.b8[7]; digest[5] = ctxt->h.b8[6];

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek digest[6] = ctxt->h.b8[5]; digest[7] = ctxt->h.b8[4];

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek digest[8] = ctxt->h.b8[11]; digest[9] = ctxt->h.b8[10];

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek digest[10] = ctxt->h.b8[9]; digest[11] = ctxt->h.b8[8];

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek digest[12] = ctxt->h.b8[15]; digest[13] = ctxt->h.b8[14];

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek digest[14] = ctxt->h.b8[13]; digest[15] = ctxt->h.b8[12];

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek digest[16] = ctxt->h.b8[19]; digest[17] = ctxt->h.b8[18];

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek digest[18] = ctxt->h.b8[17]; digest[19] = ctxt->h.b8[16];

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek#endif

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek safe_memset(ctxt, 0, sizeof(struct sha1_ctxt));

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek}

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozekvoid sha1_get_digest(const void *data, size_t size,

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek unsigned char result[SHA1_RESULTLEN])

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek{

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek struct sha1_ctxt ctx;

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek sha1_init(&ctx);

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek sha1_loop(&ctx, data, size);

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek sha1_result(&ctx, result);

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek}

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozekstatic void hash_method_init_sha1(void *context)

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek{

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek sha1_init(context);

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek}

ba4a81e933deebb416603369b447ead6ebaa040dJakub Hrozekstatic void hash_method_loop_sha1(void *context, const void *data, size_t size)

ba4a81e933deebb416603369b447ead6ebaa040dJakub Hrozek{

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek sha1_loop(context, data, size);

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek}

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozekstatic void hash_method_result_sha1(void *context, unsigned char *result_r)

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek{

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek sha1_result(context, result_r);

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek}

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozekconst struct hash_method hash_method_sha1 = {

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek "sha1",

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek sizeof(struct sha1_ctxt),

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek SHA1_RESULTLEN,

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek hash_method_init_sha1,

72ae534f5aef6d2e5d3f2f51299aede5abf9687eJakub Hrozek hash_method_loop_sha1,

266110fa0f6eb086f8f88787bb167cea416fe108Jakub Hrozek hash_method_result_sha1

266110fa0f6eb086f8f88787bb167cea416fe108Jakub Hrozek};

266110fa0f6eb086f8f88787bb167cea416fe108Jakub Hrozek