German Identity Card validation (Neuer Personalausweis/Alter Personalausweis)

This package describes the validation process of the german identity card (neuer deutscher Personalausweis/alter deutscher Personalausweis).

The document is build from different strings:

String structure

The complete calculation procedure of the id validation can be described like this.

The following structure explains the parts that the id card string will be divided into.

Serialnumber (based on authority code + consecutive number + checksum): 4 mixed characters + 5 mixed characters + 1 digit = 10
Example: T220001293 with
- Authority code (Behördenkennzahl; BKZ) ID: 4 mixed characters ([A-Z0-9]{4})
  Example: T220
- Consecutive number: 5 digits
  Example: 00129
- Checksum: 1 digit
  Example: 3
Birth (birth date) + checksum: 6 digits + 1 digit
Example: 6408125 with
- 64 is the year of birth
- 08 is the month of birth
- 12 is the day of birth
- 5 is the checksum
Expiry (expire date) + checksum: 6 digits + 1 digit
Example: 2010315 with
- 20 is the year of expiry
- 10 is the month of expiry
- 31 is the day of expiry
- 5 is the checksum
Nationality: 1 uppercase character, usually D for "Deutschland" (= "Germany")
Example: D
Total checksum: 1 digit
The checksum, with reference to all parts as explained above Example: 4