diff options
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/crc32.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/crypto/crc32.c b/crypto/crc32.c index 232c023adb..998cbc9de2 100644 --- a/crypto/crc32.c +++ b/crypto/crc32.c @@ -187,6 +187,18 @@ STATIC uint32_t crc32_no_comp(uint32_t crc, const void *_buf, unsigned int len) return crc; } +STATIC uint32_t crc32_be(uint32_t crc, const void *_buf, unsigned int len) +{ + const unsigned char *buf = _buf; + int i; + while (len--) { + crc ^= *buf++ << 24; + for (i = 0; i < 8; i++) + crc = (crc << 1) ^ ((crc & 0x80000000) ? 0x04c11db7 : 0); + } + return crc; +} + STATIC int file_crc(char *filename, ulong start, ulong size, ulong *crc, ulong *total) { |