Discussion related to cado-nfs

[Sam Stoelinga <sammiestoel@gmail.com>]

Hi,

I get the following error while trying to factor:

gzip: stdin: invalid compressed data--format violated

filter_rels_producer_thread: load error (Bad file descriptor) from

It tries to execute this command it seems:

......... many more filesl_2ed.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.19687000-19690000.yr6eid.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.15931000-15934000.s9b_08.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.20965000-20968000.zo24c6.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.10804000-10807000.jszv9k.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.15352000-15355000.bpjgj5.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.23434000-23437000.u7_2tw.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.22465000-22468000.c21z8k.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.10699000-10702000.gq01be.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.21277000-21280000.o38532.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.15889000-15892000.as2trp.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.10231000-10234000.1sv89b.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.19729000-19732000.li0pv7.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.22060000-22063000.3_pxqo.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.15025000-15028000.sptcun.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.15217000-15220000.s5pszl.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.16585000-16588000.0q5cw7.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.22057000-22060000.efhup3.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.17077000-17080000.7jnsok.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.20683000-20686000.bdzp9e.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.18061000-18064000.4ybs_h.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.20785000-20788000.5ehwy1.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.18913000-18916000.xt3ama.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.15985000-15988000.ypj3cw.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.12790000-12793000.6lb_cc.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.10537000-10540000.3vbz_n.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.21955000-21958000.eyqdof.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.23818000-23821000.mht30j.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.16324000-16327000.4imyz7.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.17479000-17482000.685wuc.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.16504000-16507000.9sosap.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.23845000-23848000.ze28d6.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.21811000-21814000.zwhazw.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.15631000-15634000.x887_u.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.16942000-16945000.6htns3.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.12475000-12478000.aphbum.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.23674000-23677000.9wx6nt.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.21424000-21427000.pfh974.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.21874000-21877000.2imoc1.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.17326000-17329000.q4j94g.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.10894000-10897000.f0nc93.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.17944000-17947000.v9uz6n.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.20047000-20050000.kyuqxn.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.19468000-19471000.on99v0.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.16534000-16537000.g273_e.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.18736000-18739000.wtama2.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.17053000-17056000.eucwjm.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.22261000-22264000.m3mjz8.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.17353000-17356000.krizj8.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.13408000-13411000.paz5qu.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.17134000-17137000.3y1mfj.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.11803000-11806000.wlkoak.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.22570000-22573000.c43yts.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.14566000-14569000.gathsf.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.14575000-14578000.ff1a_4.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.19345000-19348000.gi8953.gz /tmp/cado.r1psyafiQA/c127.upload/c127.sieving.17836000-17839000.f6cc26.gz | gzip -dc -

Any help would be greatly appreciated! I can provide more info as needed.

Context: I'm using Cado-nfs to decrypt files which were encrypted by some malware following this guide: http://blog.cassidiancybersecurity.com/post/2014/02/Bitcrypt-broken

I'm doing this for a friend.

Params used:

slaves.basepath = /tmp/cado.r1psyafiQA/client/

slaves.hostnames = localhost

slaves.nrclients = 20

slaves.niceness = 10

slaves.scriptpath = /usr/libexec/cado-nfs/bin

name = c127

rlim = 5000000

server.address = localhost

N = 6197414403066148465767611830477972406781444626901692539671142017622145058977671120729249030073292775561014115285376040234795763

alim = 10000000

lpba = 27

tasks.merge.coverNmax = 100

tasks.execpath = /usr/libexec/cado-nfs/bin

tasks.sieve.rels_wanted = 15500000

tasks.sieve.mfba = 81

tasks.sieve.mfbr = 54

tasks.sieve.rlambda = 2.1

tasks.sieve.qrange = 3000

tasks.sieve.qmin = 10000000

tasks.sieve.alambda = 2.8

tasks.sieve.I = 12

tasks.linalg.bwc.interval = 1000

tasks.linalg.bwc.interleaving = 0

tasks.linalg.bwc.mn = 64

tasks.linalg.bwc.shuffled_product = 1

tasks.linalg.characters.nchar = 50

tasks.filter.merge.forbw = 3

tasks.filter.purge.keep = 160

tasks.filter.ratio = 1.1

tasks.filter.maxlevel = 20

tasks.threads = 1

tasks.polyselect.incr = 60

tasks.polyselect.maxnorm = 41.7

tasks.polyselect.incr = 60

tasks.polyselect.maxnorm = 41.7

tasks.polyselect.admax = 2000000

tasks.polyselect.degree = 5

tasks.polyselect.adrange = 20000

tasks.polyselect.P = 50000

tasks.polyselect.nq = 1000

tasks.workdir = /tmp/cado.r1psyafiQA

lpbr = 27