84 static int sha256_compress(struct sha256_state *md, unsigned char *buf)  in sha256_compress()  argument
92 		S[i] = md->state[i];  in sha256_compress()
120 		md->state[i] = md->state[i] + S[i];  in sha256_compress()
127 void sha256_init(struct sha256_state *md)  in sha256_init()  argument
129 	md->curlen = 0;  in sha256_init()
130 	md->length = 0;  in sha256_init()
131 	md->state[0] = 0x6A09E667UL;  in sha256_init()
132 	md->state[1] = 0xBB67AE85UL;  in sha256_init()
133 	md->state[2] = 0x3C6EF372UL;  in sha256_init()
134 	md->state[3] = 0xA54FF53AUL;  in sha256_init()
135 	md->state[4] = 0x510E527FUL;  in sha256_init()
136 	md->state[5] = 0x9B05688CUL;  in sha256_init()
137 	md->state[6] = 0x1F83D9ABUL;  in sha256_init()
138 	md->state[7] = 0x5BE0CD19UL;  in sha256_init()
143    @param md     The hash state
148 int sha256_process(struct sha256_state *md, const unsigned char *in,  in sha256_process()  argument
153 	if (md->curlen >= sizeof(md->buf))  in sha256_process()
157 		if (md->curlen == 0 && inlen >= SHA256_BLOCK_SIZE) {  in sha256_process()
158 			if (sha256_compress(md, (unsigned char *) in) < 0)  in sha256_process()
160 			md->length += SHA256_BLOCK_SIZE * 8;  in sha256_process()
164 			n = MIN(inlen, (SHA256_BLOCK_SIZE - md->curlen));  in sha256_process()
165 			os_memcpy(md->buf + md->curlen, in, n);  in sha256_process()
166 			md->curlen += n;  in sha256_process()
169 			if (md->curlen == SHA256_BLOCK_SIZE) {  in sha256_process()
170 				if (sha256_compress(md, md->buf) < 0)  in sha256_process()
172 				md->length += 8 * SHA256_BLOCK_SIZE;  in sha256_process()
173 				md->curlen = 0;  in sha256_process()
184    @param md  The hash state
188 int sha256_done(struct sha256_state *md, unsigned char *out)  in sha256_done()  argument
192 	if (md->curlen >= sizeof(md->buf))  in sha256_done()
196 	md->length += md->curlen * 8;  in sha256_done()
199 	md->buf[md->curlen++] = (unsigned char) 0x80;  in sha256_done()
205 	if (md->curlen > 56) {  in sha256_done()
206 		while (md->curlen < SHA256_BLOCK_SIZE) {  in sha256_done()
207 			md->buf[md->curlen++] = (unsigned char) 0;  in sha256_done()
209 		sha256_compress(md, md->buf);  in sha256_done()
210 		md->curlen = 0;  in sha256_done()
214 	while (md->curlen < 56) {  in sha256_done()
215 		md->buf[md->curlen++] = (unsigned char) 0;  in sha256_done()
219 	WPA_PUT_BE64(md->buf + 56, md->length);  in sha256_done()
220 	sha256_compress(md, md->buf);  in sha256_done()
224 		WPA_PUT_BE32(out + (4 * i), md->state[i]);  in sha256_done()