crypto: rsa - Store rest of the private key components
When parsing a private key, store all non-optional fields. These
are required for enabling CRT mode for decrypt and verify
Signed-off-by: Salvatore Benedetto <salvatore.benedetto@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/rsa_helper.c b/crypto/rsa_helper.c
index 583656a..4df6451 100644
--- a/crypto/rsa_helper.c
+++ b/crypto/rsa_helper.c
@@ -78,6 +78,81 @@
return 0;
}
+int rsa_get_p(void *context, size_t hdrlen, unsigned char tag,
+ const void *value, size_t vlen)
+{
+ struct rsa_key *key = context;
+
+ /* invalid key provided */
+ if (!value || !vlen || vlen > key->n_sz)
+ return -EINVAL;
+
+ key->p = value;
+ key->p_sz = vlen;
+
+ return 0;
+}
+
+int rsa_get_q(void *context, size_t hdrlen, unsigned char tag,
+ const void *value, size_t vlen)
+{
+ struct rsa_key *key = context;
+
+ /* invalid key provided */
+ if (!value || !vlen || vlen > key->n_sz)
+ return -EINVAL;
+
+ key->q = value;
+ key->q_sz = vlen;
+
+ return 0;
+}
+
+int rsa_get_dp(void *context, size_t hdrlen, unsigned char tag,
+ const void *value, size_t vlen)
+{
+ struct rsa_key *key = context;
+
+ /* invalid key provided */
+ if (!value || !vlen || vlen > key->n_sz)
+ return -EINVAL;
+
+ key->dp = value;
+ key->dp_sz = vlen;
+
+ return 0;
+}
+
+int rsa_get_dq(void *context, size_t hdrlen, unsigned char tag,
+ const void *value, size_t vlen)
+{
+ struct rsa_key *key = context;
+
+ /* invalid key provided */
+ if (!value || !vlen || vlen > key->n_sz)
+ return -EINVAL;
+
+ key->dq = value;
+ key->dq_sz = vlen;
+
+ return 0;
+}
+
+int rsa_get_qinv(void *context, size_t hdrlen, unsigned char tag,
+ const void *value, size_t vlen)
+{
+ struct rsa_key *key = context;
+
+ /* invalid key provided */
+ if (!value || !vlen || vlen > key->n_sz)
+ return -EINVAL;
+
+ key->qinv = value;
+ key->qinv_sz = vlen;
+
+ return 0;
+}
+
/**
* rsa_parse_pub_key() - decodes the BER encoded buffer and stores in the
* provided struct rsa_key, pointers to the raw key as is,