What is the maximum length of a SID in SDDL format

Question

I\'m building Active Directory Authentication into my application and I am planning to link my application\'s internal accounts to a user\'s domain SID. It is easier for me to

Answer 1

183. For string format, the common answer of 184 isn't correct. If authority is between 32 and the maximum of 48 bits, then it must be represented as a hex string, not decimal, and prepended with '0x'. This means instead of a 15-character string needed to represent the maximum 48 bits in decimal, you actually need a (48 bit / 4 bit + 2) 14 character string, meaning (184 - 15 + 14) 183 characters are required for whole SID string. For less than 32 bits, decimal format is used (maximum 10 decimal characters).