diff options
Diffstat (limited to 'lib_generic/md5.c')
| -rw-r--r-- | lib_generic/md5.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/lib_generic/md5.c b/lib_generic/md5.c index 3cee431..78ef475 100644 --- a/lib_generic/md5.c +++ b/lib_generic/md5.c @@ -25,6 +25,10 @@ and to fit the cifs vfs by Steve French sfrench@us.ibm.com */ +#ifndef USE_HOSTCC +#include <common.h> +#endif /* USE_HOSTCC */ +#include <watchdog.h> #include <linux/types.h> #include <linux/string.h> #include <u-boot/md5.h> @@ -272,3 +276,39 @@ md5 (unsigned char *input, int len, unsigned char output[16]) MD5Update(&context, input, len); MD5Final(output, &context); } + + +/* + * Calculate and store in 'output' the MD5 digest of 'len' bytes at 'input'. + * 'output' must have enough space to hold 16 bytes. If 'chunk' Trigger the + * watchdog every 'chunk_sz' bytes of input processed. + */ +void +md5_wd (unsigned char *input, int len, unsigned char output[16], + unsigned int chunk_sz) +{ + struct MD5Context context; +#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG) + unsigned char *end, *curr; + int chunk; +#endif + + MD5Init(&context); + +#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG) + curr = input; + end = input + len; + while (curr < end) { + chunk = end - curr; + if (chunk > chunk_sz) + chunk = chunk_sz; + MD5Update(&context, curr, chunk); + curr += chunk; + WATCHDOG_RESET (); + } +#else + MD5Update(&context, input, len); +#endif + + MD5Final(output, &context); +} |