198 void SHA1Init(context)  in SHA1Init()  argument
199     SHA1_CTX *context;  in SHA1Init()
202     assert(context != 0);
205     context->state[0] = 0x67452301;
206     context->state[1] = 0xEFCDAB89;
207     context->state[2] = 0x98BADCFE;
208     context->state[3] = 0x10325476;
209     context->state[4] = 0xC3D2E1F0;
210     context->count[0] = context->count[1] = 0;
217 void SHA1Update(context, data, len)  in SHA1Update()  argument
218     SHA1_CTX *context;  in SHA1Update()
224     assert(context != 0);
227     j = context->count[0];
228     if ((context->count[0] += len << 3) < j)
229 	context->count[1] += (len>>29)+1;
232 	(void)memcpy(&context->buffer[j], data, (i = 64-j));
233 	SHA1Transform(context->state, context->buffer);
235 	    SHA1Transform(context->state, &data[i]);
240     (void)memcpy(&context->buffer[j], &data[i], len - i);
247 void SHA1Final(digest, context)  in SHA1Final()  argument
249     SHA1_CTX* context;
255     assert(context != 0);
258 	finalcount[i] = (u_char)((context->count[(i >= 4 ? 0 : 1)]
261     SHA1Update(context, (const u_char *)"\200", 1);
262     while ((context->count[0] & 504) != 448)
263 	SHA1Update(context, (const u_char *)"\0", 1);
264     SHA1Update(context, finalcount, 8);  /* Should cause a SHA1Transform() */
269 		((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255);