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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

477f56212ee60cc74e0c5e5cc526cec52a069abff485c89c2d57d1b4b6a54971  gpg4win-3.0.3.exe
41cb2a6d17ab0b0a0bd45a06e4dcc421191297e928a23afdf7ff8a349dedc59e  gpg4win-src-3.0.3.exe
fda270694eca7f4a6767e3a239d15d1166313c397cf83d6d06ad962a7a13717b  gpg4win-3.0.3.tar.bz2

SHA1 checksums

e901af858a964192cec891cdbae76ca6789d741c  gpg4win-3.0.3.exe
cb259311fe133017847981f31cb9b1fba6e2e456  gpg4win-src-3.0.3.exe
4be455a6e8176054ce940ae68890e8aa82a99137  gpg4win-3.0.3.tar.bz2

OpenPGP signatures

For gpg4win-3.0.3.exe: https://files.gpg4win.org/gpg4win-3.0.3.exe.sig
For gpg4win-src-3.0.3.exe: https://files.gpg4win.org/gpg4win-src-3.0.3.exe.sig
For gpg4win-3.0.3.tar.bz2: https://files.gpg4win.org/gpg4win-3.0.3.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:

26990152  bytes for gpg4win-3.0.3.exe
225630392 bytes for gpg4win-src-3.0.3.exe
5351730   bytes for gpg4win-3.0.3.tar.bz2