Reorder client src directories

client/deps/amiitool/keygen.c

@@ -0,0 +1,53 @@
+/*
+ * (c) 2015-2017 Marcos Del Sol Vives
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include "drbg.h"
+#include "keygen.h"
+#include <assert.h>
+#include <stdio.h>
+#include <string.h>
+
+void nfc3d_keygen_prepare_seed(const nfc3d_keygen_masterkeys *baseKeys, const uint8_t *baseSeed, uint8_t *output, size_t *outputSize) {
+    assert(baseKeys != NULL);
+    assert(baseSeed != NULL);
+    assert(output != NULL);
+    assert(outputSize != NULL);
+
+    uint8_t *start = output;
+
+    // 1: Copy whole type string
+    output = (uint8_t *)strcpy((char *)output, baseKeys->typeString);
+
+    // 2: Append (16 - magicBytesSize) from the input seed
+    size_t leadingSeedBytes = 16 - baseKeys->magicBytesSize;
+    memcpy(output, baseSeed, leadingSeedBytes);
+    output += leadingSeedBytes;
+
+    // 3: Append all bytes from magicBytes
+    memcpy(output, baseKeys->magicBytes, baseKeys->magicBytesSize);
+    output += baseKeys->magicBytesSize;
+
+    // 4: Append bytes 0x10-0x1F from input seed
+    memcpy(output, baseSeed + 0x10, 16);
+    output += 16;
+
+    // 5: Xor last bytes 0x20-0x3F of input seed with AES XOR pad and append them
+    unsigned int i;
+    for (i = 0; i < 32; i++) {
+        output[i] = baseSeed[i + 32] ^ baseKeys->xorPad[i];
+    }
+    output += 32;
+
+    *outputSize = output - start;
+}
+
+void nfc3d_keygen(const nfc3d_keygen_masterkeys *baseKeys, const uint8_t *baseSeed, nfc3d_keygen_derivedkeys *derivedKeys) {
+    uint8_t preparedSeed[NFC3D_DRBG_MAX_SEED_SIZE];
+    size_t preparedSeedSize;
+
+    nfc3d_keygen_prepare_seed(baseKeys, baseSeed, preparedSeed, &preparedSeedSize);
+    nfc3d_drbg_generate_bytes(baseKeys->hmacKey, sizeof(baseKeys->hmacKey), preparedSeed, preparedSeedSize, (uint8_t *) derivedKeys, sizeof(*derivedKeys));
+}