Check integrity of Gpg4win packages

Usually you can use Microsoft's own methods to check that the installer is signed by one of the current code signing certificates listed below.

Microsoft will normally display the code signature in an user account control dialog when you try to execute the downloaded file; alternatively you can take a look in the file properties with the explorer.

Additional methods how to check the integrity can be found on the Wiki page on integrity checks.

Code Signing Certificate

All Gpg4win exe installer files since April 2016 are signed with the following code signing certificate:

      S/N: 1121A3D67EAB28AA86FD85728B57FA62630D
   Issuer: CN=GlobalSign CodeSigning CA - SHA256 - G2,O=GlobalSign nv-sa,C=BE
  Subject: 1.2.840.113549.1.9.1=#636F64657369676E696E6740696E7465766174696F6E2E6465,
           CN=Intevation GmbH,O=Intevation GmbH,L=Osnabrueck,ST=Niedersachsen,C=DE
 sha1_fpr: DE:16:D5:97:2F:0B:73:95:F7:D9:1E:DC:1F:21:9B:0F:FE:89:FA:B3
  md5_fpr: C0:98:08:94:D4:E7:97:3E:9D:F4:18:E4:5E:0A:2E:D7
notBefore: 2016-03-30 16:54:41
 notAfter: 2019-03-31 16:54:41

Previously used code signing certificates were:

      S/N: 112117F638BDC993B761C6073D63C2F86EC4
   Issuer: CN=GlobalSign CodeSigning CA - G2,O=GlobalSign nv-sa,C=BE
  Subject: 1.2.840.113549.1.9.1=#636F64657369676E696E6740696E7465766174696F6E2E6465,
           CN=Intevation GmbH,O=Intevation GmbH,L=Osnabrueck,ST=Niedersachsen,C=DE
 sha1_fpr: 15:94:27:DA:C1:6E:68:A4:DD:47:EF:04:D2:17:C5:56:00:CF:A0:EC
  md5_fpr: 35:64:A0:D5:FC:6A:58:83:B8:C4:F7:1F:1C:F9:A6:9E
notBefore: 2013-06-20 14:48:08
 notAfter: 2016-09-10 09:27:26

      S/N: 0100000000012A60AF8A8F
   Issuer: CN=GlobalSign ObjectSign CA,OU=ObjectSign CA,O=GlobalSign nv-sa,C=BE
  Subject: 1.2.840.113549.1.9.1=#636F64657369676E696E6740696E7465766174696F6E2E6465,
           CN=Intevation GmbH,O=Intevation GmbH,C=DE
 sha1_fpr: B4:71:26:90:F0:3A:69:1E:F0:75:3F:8D:11:C9:EA:C3:6D:FB:7C:92
  md5_fpr: 80:0E:E2:F9:6F:AC:F4:16:0F:B2:AB:65:CA:82:22:55
notBefore: 2010-08-11 09:27:29
 notAfter: 2013-08-11 09:27:26

SHA256 checksums

4749ab2d02d384abc2b0fd045c86380e6f840b540a2081e6c0f7d538a3397b23  gpg4win-3.1.5.exe
5ee57522b0da38e3f4ed80e3e6262d7fc6a557b52e7cd42ec32a01db6d1889f1  gpg4win-src-3.1.5.exe
456143b0542557701a5dbb96240e818573b00afadeb9e7eee194343ff4b839e4  gpg4win-3.1.5.tar.bz2

SHA1 checksums

675b2261029ba54486eac08c9ac0fe09c7f1626c  gpg4win-3.1.5.exe
7ff481557428ebc37fc91518375d6239540a7c74  gpg4win-src-3.1.5.exe
7bd3343f76a1d7df2d1d565cf3d1ede959286a4d  gpg4win-3.1.5.tar.bz2

OpenPGP signatures

For gpg4win-3.1.5.exe: https://files.gpg4win.org/gpg4win-3.1.5.exe.sig
For gpg4win-src-3.1.5.exe: https://files.gpg4win.org/gpg4win-src-3.1.5.exe.sig
For gpg4win-3.1.5.tar.bz2: https://files.gpg4win.org/gpg4win-3.1.5.tar.bz2.sig

The signatures have been created with the following OpenPGP certificate:
Intevation File Distribution Key
(Fingerprint: 61AC 3F5E E4BE 593C 13D6 8B1E 7CBD 620B EC70 B1B8)

Since 2017 new releases are additionally signed with a new certificate that matches more modern key standards:
Intevation File Distribution Key
(Fingerprint: 13E3 CE81 AFEA 6F68 3E46 6E0D 42D8 7608 2688 DA1A)

The certificate can also be retrieved from OpenPGP certificate servers. Loading a certificate from a certificate server can be done e.g. via Kleopatra or GPA. Checking the signature of a file is best done with GpgEX via the Explorer.

File lengths

If you have a mismatch on the checksum or a bad signature you should first verify that you really downloaded the complete file. Here are the lengths you should get:

28488072  bytes for gpg4win-3.1.5.exe
228671200 bytes for gpg4win-src-3.1.5.exe
5428857   bytes for gpg4win-3.1.5.tar.bz2