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author | Bartlomiej Sieka <tur@semihalf.com> | 2008-04-22 12:27:56 +0200 |
---|---|---|
committer | Wolfgang Denk <wd@denx.de> | 2008-04-25 00:01:06 +0200 |
commit | 215b01bba8bc662d35f72b084700b192d367dfb4 (patch) | |
tree | 339d9bea31b2cb37fc65c8b4c75e7597a11bba10 /include | |
parent | 8875e3abab986df930167ce5c1ac4f95dcacc81c (diff) | |
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Add support for calculating hashes with watchdog triggering
Implement watchodg-aware variants of hash calculation functions:
- crc32_wd()
- md5_wd()
- sha1_csum_wd()
The above functions calculate the hash of the input buffer in chunks,
triggering the watchdog after processing each chunk. The chunk size
is given as a function call parameter.
Signed-off-by: Bartlomiej Sieka <tur@semihalf.com>
Diffstat (limited to 'include')
-rw-r--r-- | include/common.h | 1 | ||||
-rw-r--r-- | include/sha1.h | 11 | ||||
-rw-r--r-- | include/u-boot/md5.h | 8 |
3 files changed, 20 insertions, 0 deletions
diff --git a/include/common.h b/include/common.h index fa1d052..0ac1f80 100644 --- a/include/common.h +++ b/include/common.h @@ -605,6 +605,7 @@ int vsprintf(char *buf, const char *fmt, va_list args); /* lib_generic/crc32.c */ uint32_t crc32 (uint32_t, const unsigned char *, uint); +uint32_t crc32_wd (uint32_t, const unsigned char *, uint, uint); uint32_t crc32_no_comp (uint32_t, const unsigned char *, uint); /* common/console.c */ diff --git a/include/sha1.h b/include/sha1.h index 15ea13c..734d1fb 100644 --- a/include/sha1.h +++ b/include/sha1.h @@ -80,6 +80,17 @@ void sha1_csum( unsigned char *input, int ilen, unsigned char output[20] ); /** + * \brief Output = SHA-1( input buffer ), with watchdog triggering + * + * \param input buffer holding the data + * \param ilen length of the input data + * \param output SHA-1 checksum result + * \param chunk_sz watchdog triggering period (in bytes of input processed) + */ +void sha1_csum_wd (unsigned char *input, int ilen, + unsigned char output[20], unsigned int chunk_sz); + +/** * \brief Output = SHA-1( file contents ) * * \param path input file name diff --git a/include/u-boot/md5.h b/include/u-boot/md5.h index 046d1ee..8b44a7f 100644 --- a/include/u-boot/md5.h +++ b/include/u-boot/md5.h @@ -20,4 +20,12 @@ struct MD5Context { */ void md5 (unsigned char *input, int len, unsigned char output[16]); +/* + * 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); + #endif /* _MD5_H */ |