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-rw-r--r--hal.h29
-rw-r--r--rsa.c71
-rw-r--r--tests/test-rsa.c20
3 files changed, 86 insertions, 34 deletions
diff --git a/hal.h b/hal.h
index 1c5286c..8b731d4 100644
--- a/hal.h
+++ b/hal.h
@@ -618,17 +618,24 @@ extern void hal_rsa_set_debug(const int onoff);
extern void hal_rsa_set_blinding(const int onoff);
-extern hal_error_t hal_rsa_key_load(const hal_rsa_key_type_t type,
- hal_rsa_key_t *key,
- void *keybuf, const size_t keybuf_len,
- const uint8_t * const n, const size_t n_len,
- const uint8_t * const e, const size_t e_len,
- const uint8_t * const d, const size_t d_len,
- const uint8_t * const p, const size_t p_len,
- const uint8_t * const q, const size_t q_len,
- const uint8_t * const u, const size_t u_len,
- const uint8_t * const dP, const size_t dP_len,
- const uint8_t * const dQ, const size_t dQ_len);
+extern hal_error_t hal_rsa_key_load_private(hal_rsa_key_t *key,
+ void *keybuf, const size_t keybuf_len,
+ const uint8_t * const n, const size_t n_len,
+ const uint8_t * const e, const size_t e_len,
+ const uint8_t * const d, const size_t d_len,
+ const uint8_t * const p, const size_t p_len,
+ const uint8_t * const q, const size_t q_len,
+ const uint8_t * const u, const size_t u_len,
+ const uint8_t * const dP, const size_t dP_len,
+ const uint8_t * const dQ, const size_t dQ_len);
+
+extern hal_error_t hal_rsa_key_load_public(hal_rsa_key_t *key,
+ void *keybuf, const size_t keybuf_len,
+ const uint8_t * const n, const size_t n_len,
+ const uint8_t * const e, const size_t e_len);
+
+extern hal_error_t hal_rsa_key_get_type(hal_rsa_key_t key,
+ hal_rsa_key_type_t *key_type);
extern hal_error_t hal_rsa_key_get_modulus(hal_rsa_key_t key,
uint8_t *modulus,
diff --git a/rsa.c b/rsa.c
index 58b565f..704ee54 100644
--- a/rsa.c
+++ b/rsa.c
@@ -416,17 +416,17 @@ void hal_rsa_key_clear(hal_rsa_key_t key)
* calculate everything else from them.
*/
-hal_error_t hal_rsa_key_load(const hal_rsa_key_type_t type,
- hal_rsa_key_t *key_,
- void *keybuf, const size_t keybuf_len,
- const uint8_t * const n, const size_t n_len,
- const uint8_t * const e, const size_t e_len,
- const uint8_t * const d, const size_t d_len,
- const uint8_t * const p, const size_t p_len,
- const uint8_t * const q, const size_t q_len,
- const uint8_t * const u, const size_t u_len,
- const uint8_t * const dP, const size_t dP_len,
- const uint8_t * const dQ, const size_t dQ_len)
+static hal_error_t load_key(const hal_rsa_key_type_t type,
+ hal_rsa_key_t *key_,
+ void *keybuf, const size_t keybuf_len,
+ const uint8_t * const n, const size_t n_len,
+ const uint8_t * const e, const size_t e_len,
+ const uint8_t * const d, const size_t d_len,
+ const uint8_t * const p, const size_t p_len,
+ const uint8_t * const q, const size_t q_len,
+ const uint8_t * const u, const size_t u_len,
+ const uint8_t * const dP, const size_t dP_len,
+ const uint8_t * const dQ, const size_t dQ_len)
{
if (key_ == NULL || keybuf == NULL || keybuf_len < sizeof(struct rsa_key))
return HAL_ERROR_BAD_ARGUMENTS;
@@ -454,6 +454,52 @@ hal_error_t hal_rsa_key_load(const hal_rsa_key_type_t type,
}
/*
+ * Public API to load_key().
+ */
+
+hal_error_t hal_rsa_key_load_private(hal_rsa_key_t *key_,
+ void *keybuf, const size_t keybuf_len,
+ const uint8_t * const n, const size_t n_len,
+ const uint8_t * const e, const size_t e_len,
+ const uint8_t * const d, const size_t d_len,
+ const uint8_t * const p, const size_t p_len,
+ const uint8_t * const q, const size_t q_len,
+ const uint8_t * const u, const size_t u_len,
+ const uint8_t * const dP, const size_t dP_len,
+ const uint8_t * const dQ, const size_t dQ_len)
+{
+ return load_key(HAL_RSA_PRIVATE, key_, keybuf, keybuf_len,
+ n, n_len, e, e_len,
+ d, d_len, p, p_len, q, q_len, u, u_len, dP, dP_len, dQ, dQ_len);
+}
+
+hal_error_t hal_rsa_key_load_public(hal_rsa_key_t *key_,
+ void *keybuf, const size_t keybuf_len,
+ const uint8_t * const n, const size_t n_len,
+ const uint8_t * const e, const size_t e_len)
+{
+ return load_key(HAL_RSA_PUBLIC, key_, keybuf, keybuf_len,
+ n, n_len, e, e_len,
+ NULL, 0, NULL, 0, NULL, 0, NULL, 0, NULL, 0, NULL, 0);
+}
+
+/*
+ * Extract the key type.
+ */
+
+hal_error_t hal_rsa_key_get_type(hal_rsa_key_t key_,
+ hal_rsa_key_type_t *key_type)
+{
+ struct rsa_key *key = key_.key;
+
+ if (key == NULL || key_type == NULL)
+ return HAL_ERROR_BAD_ARGUMENTS;
+
+ *key_type = key->type;
+ return HAL_OK;
+}
+
+/*
* Extract public key components.
*/
@@ -543,8 +589,7 @@ hal_error_t hal_rsa_key_gen(hal_rsa_key_t *key_,
key->type = HAL_RSA_PRIVATE;
fp_read_unsigned_bin(&key->e, (uint8_t *) public_exponent, public_exponent_len);
- if (key_length != bitsToBytes(1024) && key_length != bitsToBytes(2048) &&
- key_length != bitsToBytes(4096) && key_length != bitsToBytes(8192))
+ if (key_length < bitsToBytes(1024) || key_length > bitsToBytes(8192))
return HAL_ERROR_UNSUPPORTED_KEY;
if (fp_cmp_d(&key->e, 0x010001) != FP_EQ)
diff --git a/tests/test-rsa.c b/tests/test-rsa.c
index fb53f69..594687c 100644
--- a/tests/test-rsa.c
+++ b/tests/test-rsa.c
@@ -91,16 +91,16 @@ static int test_decrypt(const char * const kind, const rsa_tc_t * const tc)
hal_rsa_key_t key = { NULL };
hal_error_t err = HAL_OK;
- if ((err = hal_rsa_key_load(HAL_RSA_PRIVATE, &key,
- keybuf, sizeof(keybuf),
- tc->n.val, tc->n.len,
- tc->e.val, tc->e.len,
- tc->d.val, tc->d.len,
- tc->p.val, tc->p.len,
- tc->q.val, tc->q.len,
- tc->u.val, tc->u.len,
- tc->dP.val, tc->dP.len,
- tc->dQ.val, tc->dQ.len)) != HAL_OK) {
+ if ((err = hal_rsa_key_load_private(&key,
+ keybuf, sizeof(keybuf),
+ tc->n.val, tc->n.len,
+ tc->e.val, tc->e.len,
+ tc->d.val, tc->d.len,
+ tc->p.val, tc->p.len,
+ tc->q.val, tc->q.len,
+ tc->u.val, tc->u.len,
+ tc->dP.val, tc->dP.len,
+ tc->dQ.val, tc->dQ.len)) != HAL_OK) {
printf("RSA CRT key load failed: %s\n", hal_error_string(err));
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-02 00:54:55 +0000