- (a,b) = s.split('.')
- if len(a) != 43 or len(b) != 43:
- raise ExtractorError(u'Unable to decrypt signature, subkeys lengths not valid')
- b = ''.join([b[:8],a[0],b[9:18],b[-4],b[19:39], b[18]])[0:40]
- a = a[-40:]
- s_dec = '.'.join((a,b))[::-1]
- return s_dec
+
+ if len(s) == 88:
+ return s[48] + s[81:67:-1] + s[82] + s[66:62:-1] + s[85] + s[61:48:-1] + s[67] + s[47:12:-1] + s[3] + s[11:3:-1] + s[2] + s[12]
+ elif len(s) == 87:
+ return s[62] + s[82:62:-1] + s[83] + s[61:52:-1] + s[0] + s[51:2:-1]
+ elif len(s) == 86:
+ return s[2:63] + s[82] + s[64:82] + s[63]
+ elif len(s) == 85:
+ return s[76] + s[82:76:-1] + s[83] + s[75:60:-1] + s[0] + s[59:50:-1] + s[1] + s[49:2:-1]
+ elif len(s) == 84:
+ return s[83:36:-1] + s[2] + s[35:26:-1] + s[3] + s[25:3:-1] + s[26]
+ elif len(s) == 83:
+ return s[52] + s[81:55:-1] + s[2] + s[54:52:-1] + s[82] + s[51:36:-1] + s[55] + s[35:2:-1] + s[36]
+ elif len(s) == 82:
+ return s[36] + s[79:67:-1] + s[81] + s[66:40:-1] + s[33] + s[39:36:-1] + s[40] + s[35] + s[0] + s[67] + s[32:0:-1] + s[34]
+
+ else:
+ raise ExtractorError(u'Unable to decrypt signature, subkeys length %d not supported; retrying might work' % (len(s)))