V1.0.6

packages/artinchip/aic-authorization/authorization/rsa_helper.c

@@ -0,0 +1,158 @@
+/*
+ * Copyright (c) 2015-2024, Intel Corporation
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Authors: Tadeusz Struk <tadeusz.struk@intel.com>
+ */
+
+#include "rsa.h"
+#include "rsapubkey.asn1.h"
+#include "rsaprivkey.asn1.h"
+
+int rsa_get_n(void *context, const void *value, size_t vlen)
+{
+    struct rsa_key *key = context;
+
+    /* invalid key provided */
+    if (!value || !vlen)
+        return -EINVAL;
+
+    key->n = value;
+    key->n_sz = vlen;
+
+    return 0;
+}
+
+int rsa_get_e(void *context, const void *value, size_t vlen)
+{
+    struct rsa_key *key = context;
+
+    /* invalid key provided */
+    if (!value || !key->n_sz || !vlen || vlen > key->n_sz)
+        return -EINVAL;
+
+    key->e = value;
+    key->e_sz = vlen;
+
+    return 0;
+}
+
+int rsa_get_d(void *context, const void *value, size_t vlen)
+{
+    struct rsa_key *key = context;
+
+    /* invalid key provided */
+    if (!value || !key->n_sz || !vlen || vlen > key->n_sz)
+        return -EINVAL;
+
+    key->d = value;
+    key->d_sz = vlen;
+
+    return 0;
+}
+
+int rsa_get_p(void *context, 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, 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, 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, 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, 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,
+ *                       so that the caller can copy it or MPI parse it, etc.
+ *
+ * @rsa_key:	struct rsa_key key representation
+ * @key:	key in BER format
+ * @key_len:	length of key
+ *
+ * Return:	0 on success or error code in case of error
+ */
+int rsa_parse_pub_key(struct rsa_key *rsa_key, const void *key,
+                      unsigned int key_len)
+{
+    return asn1_ber_decoder(&rsapubkey_decoder, rsa_key, key, key_len);
+}
+
+/**
+ * rsa_parse_priv_key() - decodes the BER encoded buffer and stores in the
+ *                        provided struct rsa_key, pointers to the raw key
+ *                        as is, so that the caller can copy it or MPI parse it,
+ *                        etc.
+ *
+ * @rsa_key:	struct rsa_key key representation
+ * @key:	key in BER format
+ * @key_len:	length of key
+ *
+ * Return:	0 on success or error code in case of error
+ */
+int rsa_parse_priv_key(struct rsa_key *rsa_key, const void *key,
+                       unsigned int key_len)
+{
+    return asn1_ber_decoder(&rsaprivkey_decoder, rsa_key, key, key_len);
+}