Refactor siglen_map[] to store key size in bytes instead of 32-bit words.

src/platform/vboot_reference/tests/rsa_verify_benchmark.c

Index: src/platform/vboot_reference/tests/rsa_verify_benchmark.c
diff --git a/src/platform/vboot_reference/tests/rsa_verify_benchmark.c b/src/platform/vboot_reference/tests/rsa_verify_benchmark.c
index 20b1de0d11fe64f2075ce1fe077635fa4cdd8092..29acf75c8a64136ea2947aedf9caddef79a488d9 100644
--- a/src/platform/vboot_reference/tests/rsa_verify_benchmark.c
+++ b/src/platform/vboot_reference/tests/rsa_verify_benchmark.c
@@ -32,7 +32,7 @@ int SpeedTestAlgorithm(int algorithm) {
     "sha1", "sha256", "sha512",  /* RSA-8192 */
   };
 
-  key_size = siglen_map[algorithm] * sizeof(uint32_t) * 8;  /* in bits. */
+  key_size = siglen_map[algorithm] * 8;  /* in bits. */
   /* Get key. */
   snprintf(file_name, FILE_NAME_SIZE, "testkeys/key_rsa%d.keyb", key_size);
   key = RSAPublicKeyFromFile(file_name);