1 files changed, 205 insertions, 0 deletions
diff --git a/libparc/parc/security/parc_Key.c b/libparc/parc/security/parc_Key.c
new file mode 100755
index 00000000..06b85420
--- /dev/null
+++ b/libparc/parc/security/parc_Key.c
@@ -0,0 +1,205 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ */
+
+#include <config.h>
+
+#include <string.h>
+#include <stdio.h>
+
+#include <parc/security/parc_Key.h>
+#include <parc/algol/parc_Object.h>
+#include <parc/algol/parc_Memory.h>
+#include <LongBow/runtime.h>
+
+struct parc_key {
+    PARCKeyId *keyid;
+    PARCSigningAlgorithm signingAlg;
+    PARCBuffer *key;
+};
+
+static void
+_parcKey_FinalRelease(PARCKey **keyP)
+{
+    if ((*keyP)->keyid != NULL) {
+        parcKeyId_Release(&(*keyP)->keyid);
+    }
+    if ((*keyP)->key != NULL) {
+        parcBuffer_Release(&(*keyP)->key);
+    }
+}
+
+parcObject_ExtendPARCObject(PARCKey, _parcKey_FinalRelease, NULL, NULL, NULL, NULL, NULL, NULL);
+
+static PARCKey *
+_parcKey_Create()
+{
+    PARCKey *key = parcObject_CreateInstance(PARCKey);
+    return key;
+}
+
+/**
+ * Create a Key for use with the specified signing algorithm.
+ *
+ * This method support Public Key alogirhtms
+ *
+ * For Public Key algorithms, the buffer should be a DER encoded key.
+ */
+PARCKey *
+parcKey_CreateFromDerEncodedPublicKey(PARCKeyId *keyid, PARCSigningAlgorithm signingAlg, PARCBuffer *derEncodedKey)
+{
+    assertNotNull(keyid, "Parameter keyid must be non-null");
+    assertNotNull(derEncodedKey, "Parameter derEncodedKey must be non-null");
+
+    // Exclude the symmetric key algorithms
+    switch (signingAlg) {
+        case PARCSigningAlgorithm_RSA: // fallthrough
+        case PARCSigningAlgorithm_DSA:
+            break;
+
+        default:
+            trapIllegalValueIf(true, "Unknown key algorithm or symmetric key algorithm: %s\n", parcSigningAlgorithm_ToString(signingAlg));
+    }
+
+    PARCKey *key = _parcKey_Create();
+    assertNotNull(key, "Unable to allocate memory for PARCKey");
+
+    key->key = parcBuffer_Acquire(derEncodedKey);
+    key->signingAlg = signingAlg;
+    key->keyid = parcKeyId_Acquire(keyid);
+    return key;
+}
+
+/**
+ * Create a Key for use with the specified signing algorithm.
+ *
+ * This method support HMAC with symmetric keys.
+ *
+ * The secretkey is a set of random bytes.
+ */
+PARCKey *
+parcKey_CreateFromSymmetricKey(PARCKeyId *keyid, PARCSigningAlgorithm signingAlg, PARCBuffer *secretkey)
+{
+    assertNotNull(keyid, "Parameter keyid must be non-null");
+    assertNotNull(secretkey, "Parameter derEncodedKey must be non-null");
+
+    // Exclude the symmetric key algorithms
+    switch (signingAlg) {
+        case PARCSigningAlgorithm_HMAC:
+            break;
+
+        default:
+            trapIllegalValueIf(true, "Unknown key algorithm or symmetric key algorithm: %s\n", parcSigningAlgorithm_ToString(signingAlg));
+    }
+
+    PARCKey *key = _parcKey_Create();
+    assertNotNull(key, "Unable to allocate memory for PARCKey");
+
+    key->key = parcBuffer_Acquire(secretkey);
+    key->signingAlg = signingAlg;
+    key->keyid = parcKeyId_Acquire(keyid);
+    return key;
+}
+
+/**
+ * Destroys the key, keyid, and key byte buffer
+ */
+
+parcObject_ImplementAcquire(parcKey, PARCKey);
+
+parcObject_ImplementRelease(parcKey, PARCKey);
+
+void
+parcKey_AssertValid(PARCKey *keyPtr)
+{
+    assertNotNull(keyPtr, "Parameter must be non-null double pointer");
+    assertNotNull(keyPtr->key, "Parameter key must not be null");
+    assertNotNull(keyPtr->keyid, "Parameter keyId must not be null");
+}
+
+PARCKeyId *
+parcKey_GetKeyId(const PARCKey *key)
+{
+    assertNotNull(key, "Parameter must be non-null");
+    return key->keyid;
+}
+
+PARCSigningAlgorithm
+parcKey_GetSigningAlgorithm(const PARCKey *key)
+{
+    assertNotNull(key, "Parameter must be non-null");
+    return key->signingAlg;
+}
+
+PARCBuffer *
+parcKey_GetKey(const PARCKey *key)
+{
+    assertNotNull(key, "Parameter must be non-null");
+    return key->key;
+}
+
+/**
+ * keyA equals keyB iff the KeyIds are equal, the SigningAlgs are equal, and the keys are equal.
+ * NULL equals NULL, but NULL does not equal any non-NULL
+ */
+bool
+parcKey_Equals(const PARCKey *keyA, const PARCKey *keyB)
+{
+    if (keyA == keyB) {
+        return true;
+    }
+
+    if (keyA == NULL || keyB == NULL) {
+        return false;
+    }
+
+    if (keyA->signingAlg == keyB->signingAlg) {
+        if (parcKeyId_Equals(keyA->keyid, keyB->keyid)) {
+            if (parcBuffer_Equals(keyA->key, keyB->key)) {
+                return true;
+            }
+        }
+    }
+
+    return false;
+}
+
+PARCKey *
+parcKey_Copy(const PARCKey *original)
+{
+    PARCKey *newkey = _parcKey_Create();
+    assertNotNull(newkey, "Unable to allocate memory for a new key");
+    newkey->key = parcBuffer_Copy(original->key);
+    newkey->keyid = parcKeyId_Copy(original->keyid);
+    newkey->signingAlg = original->signingAlg;
+    return newkey;
+}
+
+char *
+parcKey_ToString(const PARCKey *key)
+{
+    char *string;
+    int failure = asprintf(&string, "PARCKey {.KeyID=\"%s\", .SigningAlgorithm=\"%s\" }",
+                           parcKeyId_ToString(key->keyid),
+                           parcSigningAlgorithm_ToString(key->signingAlg));
+    assertTrue(failure > -1, "Error asprintf");
+
+    char *result = parcMemory_StringDuplicate(string, strlen(string));
+    free(string);
+
+    return result;
+}