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[pset4] [recover] Add hashes for jpeg files without trailing zeros #243

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[pset4] [recover] Add hashes for jpeg files without trailing zeros #243

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c29c1e7
add hashes without trailing zeros
RCW679 May 11, 2024
bf0bb0a
Update __init__.py
RCW679 May 11, 2024
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68 changes: 63 additions & 5 deletions recover/__init__.py
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Original file line number Diff line number Diff line change
@@ -1,7 +1,8 @@
import check50
import check50.c

HASHES = [
# Hashes of the jpg files with the trailing zeros
HASHES_WITH_ZEROS = [
"6e2e4e56677e55cda750a2c0bc1c96fb4952ee37aafcc0810d0d5a883834abee", # 000.jpg
"4b9e49c8b47574ecda37045f9a8411f5cdc02c767cbe0d021d158321f730c26a", # 001.jpg
"990a411e113591709fa89a328eb8e436d91d68f5f1b1a546af24420cde661f61", # 002.jpg
Expand Down Expand Up @@ -53,6 +54,59 @@
"bba63b6b98e0b5c6fbba24fd840a8eac0ff2b86973338e89ef699920c8835e30", # 048.jpg
"0ff470f2272f656483779e1901611d9c5237df521e51b5aab80760c5c95689af" # 049.jpg
]
# Hashes of the jpg files without the trailing zeros
HASHES_WITHOUT_ZEROS = [
"1dc1ccd72cbe6e012ca7f5d59f161fd8c1c5b2558a820802f1ab7dfbd2cc9ae3", # 000.jpg
"1519f7ebb5414c7eff12a11a4d7e6552c8221b49fe84633b80d7b99ed4ecd566", # 001.jpg
"7d69e6f422b153398c5574800600de2bfcfa9942863d9934083899c8ef01d7cf", # 002.jpg
"526228fb0af1754549796f2ea699693038d860058249315acdad55947b28c530", # 003.jpg
"3b45e1530de2f1cf68a50b28d87c792a5631586c43e10295d2fce642e496aca9", # 004.jpg
"fbded0b786cd18f26e984235602655c0d9d5624f11a12a1d3ed4ffbf063d701d", # 005.jpg
"ba594c45b74832b464605178eaeabcced70f820357b98e624ab7b0fff3378479", # 006.jpg
"4d5f9ee8d4ce6998888b1ce006cd9a4fb01008391f9b3dfad9a8c9b14fce9419", # 007.jpg
"e91ab834f7597bbf74635457cfa4df472c3fdd2e83f7fd46c1629a28cf245b0d", # 008.jpg
"ba6a751b246ed23f04e8c474a4ebb5d4e8e1121e9c0e7be9114ddac1bc808392", # 009.jpg
"9234d50a86009bf8edd1edeb88d8b1b9a1db1c32915001d3ad2daf34ca4f7fad", # 010.jpg
"ea1f94e3b308c16d2a2477c0c1745cb003ef9ef48525bdb94a564daa3df6d5a2", # 011.jpg
"3f4012a51d4182f4a903e655e19ef1d17d829de62c2bf89b14d389838754b11c", # 012.jpg
"b2fb4815602e4cb043c9ac3248f63529f954086257bc27aff40dc3edc351b67d", # 013.jpg
"48845472a271594cb5129453020973270db898c10febeff9b426670f99ac76b3", # 014.jpg
"90c62d5f09e49ba83111412b93d56ea88cfcaa5c71cb3cbb98f4e17396e10d22", # 015.jpg
"93e17b91e9526cd32257fdd1451ce2eaf38179b835fb69fb2d3b16af03ad97f2", # 016.jpg
"34bbc00f91d8fcadc2cd3e96648f3c5c951eeec06fd4bc28c76b410ea887afbe", # 017.jpg
"84dc6df2c98d2e6ed4fa4eee69f22b39b2ce75965be113a708339d5466815751", # 018.jpg
"03dbc1a90277517b2145cc401bb8fb7d854eaed9e1988a8c1ce9219f5f6a1f13", # 019.jpg
"04d733190577235cb226a56af8aeec7534529778f1f64e99f9c771f889e7b554", # 020.jpg
"05cc65a0d9684b522539a9a3cf4b0c4640c2d5af3b4ad935956fd0aa9ca89a55", # 021.jpg
"836b52db5df5cc3d53d7854d7e1657808176ce1f5e9aaba42392d1176770c907", # 022.jpg
"0d9bd6b961a4a93b9650c63c568a7e5a4fc07eff50a108d5187b08a2c08267f9", # 023.jpg
"dc441350506fa48437e241e580b1a79bbb2c715af06d8c3a8dd7e61412fdf2aa", # 024.jpg
"7e383953443e3a2b6af83fdb864e63fd6c8f005caf04556efdfc7d673112e3e9", # 025.jpg
"0bcb0235d62ef9cbc25b1af08ea68a2db586a4bdef2092543814f8eff578b46f", # 026.jpg
"9b36f136bc7846436ff0c711340b5d180d396238b4a028f0477beeecb9f08418", # 027.jpg
"7e31395b65e7d47cda9ac7e68c93626c0d1ccbc71d46224a01cc6416a5f83de5", # 028.jpg
"a0d2cd96f3dd1c03e261c9c57d46220f54db96dae988fa1d4ad47c7d83a645c0", # 029.jpg
"06d5fa541f1bf82bd843d4206ee2ed4ebcf6b18728d6e8a58783e865499a5f60", # 030.jpg
"2ef05b310f9a7c6511677be285bbf802fbb5b88120a6fb882f45ad7997754ff7", # 031.jpg
"c01bea67dba7f12bf1f025e83fe9f621abce3904f5d749c8ae110e3746e2848d", # 032.jpg
"478b6b2489763b698fb343db8b155252d122f3327d6ad8558490c2462430936b", # 033.jpg
"7478d36dba541bed05a55322dd7620023632ffb4b22c59b3f00d8791d2baa83b", # 034.jpg
"45e8044c5cb56b63f3faf42c7ae76582db9c623a772e4b627cb2990bf52d69ad", # 035.jpg
"441fee061f65f6981021ba33fb8b2510cf208816b66c3eb2ec241ceb3077121b", # 036.jpg
"e7192f4d90ac882fd7b4f3b61a1f5561d8acb95c139e98e890781fe4d611d0f9", # 037.jpg
"75ce8427950263acf78940c7bd44664c52de37b40d10e42338acaea5e30b1e35", # 038.jpg
"86ee73be1533a68c6aba625cef06f1e8ce73020f2684f16f9158854d24921c8c", # 039.jpg
"fbc821c712dd69f32162b871d24cd3657b197ac0f98d8023fa14581c3b3fade6", # 040.jpg
"53f9b05219263cc0c6d6429463ae4493a33a3b7599584b4234cc3cbc145480ba", # 041.jpg
"3eacdafc305d6bb67bbde4c1c03df46ff42845f837f92cc40627bb1066a66d80", # 042.jpg
"93fe6dd878c8812e3432440018f96160875f515560ae25035edd6ed73863b291", # 043.jpg
"2dbdaf0fb91c08c7da8e839e472e1d4b68cee944b8c429549de07f69ccbb7391", # 044.jpg
"18eec5cd27d10531db41791d22171d22a7ba8de4d363e880a09aac24c382ac10", # 045.jpg
"19351b89aa0a30cdb52789453e63dda5f83304673bfe952ce1002e39d2a03c99", # 046.jpg
"d6aa73f9fd1b0ad5950d78f6f3fd6b4e8e71e96e831a2173f6c3c765d777cc57", # 047.jpg
"152b76f9501f71a71625dad39919ab4bc0949edd4099f8b9a0ec127f19446534", # 048.jpg
"cd9e4a8b2221ae6d4169caf2d9b4d22fdfcced8d9fe01f5f6468a7c64a28989a" # 049.jpg
]

@check50.check()
def exists():
Expand All @@ -70,26 +124,30 @@ def test_noimage():
"""handles lack of forensic image"""
check50.run("./recover").exit(1)

def verify_hash(i):
hash = check50.hash("{:03d}.jpg".format(i))
return hash in [HASHES_WITH_ZEROS[i], HASHES_WITHOUT_ZEROS[i]]

@check50.check(compiles)
def first_image():
"""recovers 000.jpg correctly"""
check50.run("./recover card.raw").exit(0, timeout=10)
if check50.hash("000.jpg") != HASHES[0]:
if not verify_hash(0):
raise check50.Failure("recovered image does not match")

@check50.check(compiles)
def middle_images():
"""recovers middle images correctly"""
check50.run("./recover card.raw").exit(0, timeout=10)
for i, hash in enumerate(HASHES[1:-1], 1):
if hash != check50.hash("{:03d}.jpg".format(i)):
for i in range(1, 49):
if not verify_hash(i):
raise check50.Failure("recovered image does not match")

@check50.check(compiles)
def last_image():
"""recovers 049.jpg correctly"""
check50.run("./recover card.raw").exit(0, timeout=10)
if check50.hash("049.jpg") != HASHES[-1]:
if not verify_hash(49):
raise check50.Failure("recovered image does not match")

@check50.check(last_image)
Expand Down