Decrypt the password 2 of Blockchain wallet

[crypto]

I can't answer your question but maybe I can help you finding the correct password algo.

I could fetch this json data from their website during login (hashes masked for privacy reasons):

auth_type:0
clientTimeDiff:-28889
extra_seed:"*******************************************************************"
guid:"********-****-****-****-************"
language:"de"
payload:"{"pbkdf2_iterations":5000,"version":3,"payload":"**********************************************"}"
payload_checksum:"********************************************************"
real_auth_type:4
serverTime:1502981327749

Good luck!