46 int buf_get_dss_pub_key(buffer* buf, dss_key *key) {  in buf_get_dss_pub_key()  argument
49 	dropbear_assert(key != NULL);  in buf_get_dss_pub_key()
50 	key->p = m_malloc(sizeof(mp_int));  in buf_get_dss_pub_key()
51 	key->q = m_malloc(sizeof(mp_int));  in buf_get_dss_pub_key()
52 	key->g = m_malloc(sizeof(mp_int));  in buf_get_dss_pub_key()
53 	key->y = m_malloc(sizeof(mp_int));  in buf_get_dss_pub_key()
54 	m_mp_init_multi(key->p, key->q, key->g, key->y, NULL);  in buf_get_dss_pub_key()
55 	key->x = NULL;  in buf_get_dss_pub_key()
58 	if (buf_getmpint(buf, key->p) == DROPBEAR_FAILURE  in buf_get_dss_pub_key()
59 	 || buf_getmpint(buf, key->q) == DROPBEAR_FAILURE  in buf_get_dss_pub_key()
60 	 || buf_getmpint(buf, key->g) == DROPBEAR_FAILURE  in buf_get_dss_pub_key()
61 	 || buf_getmpint(buf, key->y) == DROPBEAR_FAILURE) {  in buf_get_dss_pub_key()
66 	if (mp_count_bits(key->p) < MIN_DSS_KEYLEN) {  in buf_get_dss_pub_key()
79 int buf_get_dss_priv_key(buffer* buf, dss_key *key) {  in buf_get_dss_priv_key()  argument
83 	dropbear_assert(key != NULL);  in buf_get_dss_priv_key()
85 	ret = buf_get_dss_pub_key(buf, key);  in buf_get_dss_priv_key()
90 	key->x = m_malloc(sizeof(mp_int));  in buf_get_dss_priv_key()
91 	m_mp_init(key->x);  in buf_get_dss_priv_key()
92 	ret = buf_getmpint(buf, key->x);  in buf_get_dss_priv_key()
94 		m_free(key->x);  in buf_get_dss_priv_key()
102 void dss_key_free(dss_key *key) {  in dss_key_free()  argument
105 	if (key == NULL) {  in dss_key_free()
109 	if (key->p) {  in dss_key_free()
110 		mp_clear(key->p);  in dss_key_free()
111 		m_free(key->p);  in dss_key_free()
113 	if (key->q) {  in dss_key_free()
114 		mp_clear(key->q);  in dss_key_free()
115 		m_free(key->q);  in dss_key_free()
117 	if (key->g) {  in dss_key_free()
118 		mp_clear(key->g);  in dss_key_free()
119 		m_free(key->g);  in dss_key_free()
121 	if (key->y) {  in dss_key_free()
122 		mp_clear(key->y);  in dss_key_free()
123 		m_free(key->y);  in dss_key_free()
125 	if (key->x) {  in dss_key_free()
126 		mp_clear(key->x);  in dss_key_free()
127 		m_free(key->x);  in dss_key_free()
129 	m_free(key);  in dss_key_free()
141 void buf_put_dss_pub_key(buffer* buf, dss_key *key) {  in buf_put_dss_pub_key()  argument
143 	dropbear_assert(key != NULL);  in buf_put_dss_pub_key()
145 	buf_putmpint(buf, key->p);  in buf_put_dss_pub_key()
146 	buf_putmpint(buf, key->q);  in buf_put_dss_pub_key()
147 	buf_putmpint(buf, key->g);  in buf_put_dss_pub_key()
148 	buf_putmpint(buf, key->y);  in buf_put_dss_pub_key()
153 void buf_put_dss_priv_key(buffer* buf, dss_key *key) {  in buf_put_dss_priv_key()  argument
155 	dropbear_assert(key != NULL);  in buf_put_dss_priv_key()
156 	buf_put_dss_pub_key(buf, key);  in buf_put_dss_priv_key()
157 	buf_putmpint(buf, key->x);  in buf_put_dss_priv_key()
164 int buf_dss_verify(buffer* buf, dss_key *key, const unsigned char* data,  in buf_dss_verify()  argument
178 	dropbear_assert(key != NULL);  in buf_dss_verify()
198 	if (mp_cmp(&val1, key->q) != MP_LT) {  in buf_dss_verify()
203 	if (mp_invmod(&val1, key->q, &val2) != MP_OKAY) {  in buf_dss_verify()
212 	if (mp_mulmod(&val1, &val2, key->q, &val3) != MP_OKAY) {  in buf_dss_verify()
219 	if (mp_cmp(&val1, key->q) != MP_LT) {  in buf_dss_verify()
224 	if (mp_mulmod(&val1, &val2, key->q, &val4) != MP_OKAY) {  in buf_dss_verify()
230 	if (mp_exptmod(key->g, &val3, key->p, &val2) != MP_OKAY) {  in buf_dss_verify()
234 	if (mp_exptmod(key->y, &val4, key->p, &val3) != MP_OKAY) {  in buf_dss_verify()
238 	if (mp_mulmod(&val2, &val3, key->p, &val4) != MP_OKAY) {  in buf_dss_verify()
242 	if (mp_mod(&val4, key->q, &val2) != MP_OKAY) {  in buf_dss_verify()
295 void buf_put_dss_sign(buffer* buf, dss_key *key, const unsigned char* data,  in buf_put_dss_sign()  argument
316 	dropbear_assert(key != NULL);  in buf_put_dss_sign()
327 	privkeytmp = mptobytes(key->x, &i);  in buf_put_dss_sign()
344 	if (mp_mod(&dss_protok, key->q, &dss_k) != MP_OKAY) {  in buf_put_dss_sign()
350 	gen_random_mpint(key->q, &dss_k);  in buf_put_dss_sign()
357 	if (mp_exptmod(key->g, &dss_k, key->p, &dss_temp1) !=  MP_OKAY) {  in buf_put_dss_sign()
361 	if (mp_mod(&dss_temp1, key->q, &dss_r) != MP_OKAY) {  in buf_put_dss_sign()
366 	if (mp_mulmod(&dss_r, key->x, key->q, &dss_temp1) != MP_OKAY) {  in buf_put_dss_sign()
370 	if (mp_addmod(&dss_m, &dss_temp1, key->q, &dss_temp2) != MP_OKAY) {  in buf_put_dss_sign()
375 	if (mp_invmod(&dss_k, key->q, &dss_temp1) != MP_OKAY) {  in buf_put_dss_sign()
380 	if (mp_mulmod(&dss_temp1, &dss_temp2, key->q, &dss_s) != MP_OKAY) {  in buf_put_dss_sign()