2  * sha256.c --- The sha256 algorithm
77 	struct sha256_state sha256;  member
88         S[i] = md->sha256.state[i];  in sha256_compress()
110         md->sha256.state[i] = md->sha256.state[i] + S[i];  in sha256_compress()
116     md->sha256.curlen = 0;  in sha256_init()
117     md->sha256.length = 0;  in sha256_init()
118     md->sha256.state[0] = 0x6A09E667UL;  in sha256_init()
119     md->sha256.state[1] = 0xBB67AE85UL;  in sha256_init()
120     md->sha256.state[2] = 0x3C6EF372UL;  in sha256_init()
121     md->sha256.state[3] = 0xA54FF53AUL;  in sha256_init()
122     md->sha256.state[4] = 0x510E527FUL;  in sha256_init()
123     md->sha256.state[5] = 0x9B05688CUL;  in sha256_init()
124     md->sha256.state[6] = 0x1F83D9ABUL;  in sha256_init()
125     md->sha256.state[7] = 0x5BE0CD19UL;  in sha256_init()
135 	    if (md->sha256.curlen == 0 && inlen >= SHA256_BLOCKSIZE) {  in sha256_process()
137 		    md->sha256.length += SHA256_BLOCKSIZE * 8;  in sha256_process()
141 		    n = MIN(inlen, (SHA256_BLOCKSIZE - md->sha256.curlen));  in sha256_process()
142 		    memcpy(md->sha256.buf + md->sha256.curlen, in, (size_t)n);  in sha256_process()
143 		    md->sha256.curlen += n;  in sha256_process()
146 		    if (md->sha256.curlen == SHA256_BLOCKSIZE) {  in sha256_process()
147 			    sha256_compress(md, md->sha256.buf);  in sha256_process()
148 			    md->sha256.length += 8*SHA256_BLOCKSIZE;  in sha256_process()
149 			    md->sha256.curlen = 0;  in sha256_process()
160     md->sha256.length += md->sha256.curlen * 8;  in sha256_done()
163     md->sha256.buf[md->sha256.curlen++] = (unsigned char)0x80;  in sha256_done()
169     if (md->sha256.curlen > 56) {  in sha256_done()
170         while (md->sha256.curlen < 64) {  in sha256_done()
171             md->sha256.buf[md->sha256.curlen++] = (unsigned char)0;  in sha256_done()
173         sha256_compress(md, md->sha256.buf);  in sha256_done()
174         md->sha256.curlen = 0;  in sha256_done()
178     while (md->sha256.curlen < 56) {  in sha256_done()
179         md->sha256.buf[md->sha256.curlen++] = (unsigned char)0;  in sha256_done()
183     STORE64H(md->sha256.length, md->sha256.buf+56);  in sha256_done()
184     sha256_compress(md, md->sha256.buf);  in sha256_done()
188         STORE32H(md->sha256.state[i], out+(4*i));  in sha256_done()
238 		printf("SHA256 test message %d: ", i);  in main()