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-rw-r--r--misc.cc64
1 files changed, 31 insertions, 33 deletions
diff --git a/misc.cc b/misc.cc
index aafa372..0f1be45 100644
--- a/misc.cc
+++ b/misc.cc
@@ -6,46 +6,44 @@
namespace nitrokey {
namespace misc {
-std::string hexdump(const char *p, size_t size) {
- std::stringstream out;
- char formatbuf[128];
- const char *pstart = p;
-
- for (const char *pend = p + size; p < pend;) {
- snprintf(formatbuf, 128, "%04x\t", p - pstart);
- out << formatbuf;
-
- for (const char *le = p + 16; p < le && p < pend; p++) {
- snprintf(formatbuf, 128, "%02x ", uint8_t(*p));
- out << formatbuf;
- }
- out << std::endl;
- }
- return out.str();
+std::string hexdump(const char *p, size_t size) {
+ std::stringstream out;
+ char formatbuf[128];
+ const char *pstart = p;
+
+ for (const char *pend = p + size; p < pend;) {
+ snprintf(formatbuf, 128, "%04x\t", p - pstart);
+ out << formatbuf;
+
+ for (const char *le = p + 16; p < le && p < pend; p++) {
+ snprintf(formatbuf, 128, "%02x ", uint8_t(*p));
+ out << formatbuf;
+ }
+ out << std::endl;
+ }
+ return out.str();
}
-static uint32_t _crc32 (uint32_t crc, uint32_t data)
-{
- int i;
- crc = crc ^ data;
+static uint32_t _crc32(uint32_t crc, uint32_t data) {
+ int i;
+ crc = crc ^ data;
- for (i = 0; i < 32; i++) {
- if (crc & 0x80000000)
- crc = (crc << 1) ^ 0x04C11DB7; // polynomial used in STM32
- else
- crc = (crc << 1);
- }
+ for (i = 0; i < 32; i++) {
+ if (crc & 0x80000000)
+ crc = (crc << 1) ^ 0x04C11DB7; // polynomial used in STM32
+ else
+ crc = (crc << 1);
+ }
- return crc;
+ return crc;
}
uint32_t stm_crc32(const uint8_t *data, size_t size) {
- uint32_t crc = 0xffffffff;
- const uint32_t *pend = (const uint32_t *)(data + size);
- for (const uint32_t *p = (const uint32_t *)(data); p < pend; p++)
- crc = _crc32(crc, *p);
- return crc;
+ uint32_t crc = 0xffffffff;
+ const uint32_t *pend = (const uint32_t *)(data + size);
+ for (const uint32_t *p = (const uint32_t *)(data); p < pend; p++)
+ crc = _crc32(crc, *p);
+ return crc;
}
-
}
}