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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
The Gpg4win exe installer is signed with the following code signing certificate:
S/N: 271DF934504F8E383B33BCE5
(dec): 12106151066073208719244770533
Issuer: CN=GlobalSign GCC R45 CodeSigning CA 2020,O=GlobalSign nv-sa,C=BE
Subject: 1.2.840.113549.1.9.1=#636F646540673130636F64652E636F6D,CN=g10 Code GmbH,O=g10 Code GmbH,L=Erkrath,ST=Nordrhein-Westfalen,C=DE
sha2_fpr: CD:56:16:B8:EE:4C:F0:EB:90:45:7E:14:E9:89:2A:6E:BC:26:B5:D3:66:59:03:EE:13:CF:1E:CE:79:70:0E:2A
sha1_fpr: 83:CC:4E:38:2E:5E:4A:F5:54:C6:6E:42:9E:8F:66:FF:E4:99:91:0D
certid: 6E9CA841CF00ABF4F8929210FF478C9CAB578518.271DF934504F8E383B33BCE5
keygrip: 5534246CC4AF746F02264D0BE93597A27D54ADD0
notBefore: 2025-06-05 12:43:59
notAfter: 2028-06-05 12:43:59
Previously used code signing certificates were:
S/N: 4F7382A39E57A34E167CF912
Issuer: CN=GlobalSign GCC R45 CodeSigning CA 2020,O=GlobalSign nv-sa,C=BE
Subject: 1.2.840.113549.1.9.1=#636F646540673130636F64652E636F6D,CN=g10 Code GmbH,O=g10 Code GmbH,L=Erkrath,ST=Nordrhein-Westfalen,C=DE
sha2_fpr: DF:B5:9B:70:5C:47:9E:4E:FF:34:AD:BF:F9:B8:DC:AF:5F:74:D3:F6:58:91:F3:8C:D1:B1:0D:C8:D3:F1:42:20
sha1_fpr: B2:85:2D:44:90:F6:55:EB:EA:DF:9F:FD:8D:09:2E:81:54:45:00:77
certid: 6E9CA841CF00ABF4F8929210FF478C9CAB578518.4F7382A39E57A34E167CF912
keygrip: A340DB2D0B82943E8AFD854C6366D5953014D583
notBefore: 2022-04-08 08:26:24
notAfter: 2025-07-02 12:12:13
S/N: 2F48FAE3C9E7B142B9A8B259
Issuer: CN=GlobalSign GCC R45 CodeSigning CA 2020,O=GlobalSign nv-sa,C=BE
Subject: 1.2.840.113549.1.9.1=#636F646540673130636F64652E636F6D,CN=g10 Code GmbH,O=g10 Code GmbH,L=Erkrath,ST=Nordrhein-Westfalen,C=DE
sha2_fpr: B7:15:C7:C6:11:5A:99:A8:B1:C2:91:BE:68:90:BB:EE:AD:42:EE:2F:F6:17:78:E3:66:A0:1A:21:4E:FD:D8:00
sha1_fpr: 87:94:97:61:BE:B0:7B:FD:0B:90:F3:76:1F:1D:3E:3F:CC:3C:4D:B3
certid: 6E9CA841CF00ABF4F8929210FF478C9CAB578518.2F48FAE3C9E7B142B9A8B259
keygrip: 353A5BE748A8622E4D121DB3340A4EC1D4058BE1
notBefore: 2021-04-21 16:45:15 UTC
notAfter: 2022-06-02 12:12:13 UTC
S/N: 39E684F05C48911BAFB37629
Issuer: CN=GlobalSign CodeSigning CA - SHA256 - G3,O=GlobalSign nv-sa,C=BE
Subject: 1.2.840.113549.1.9.1=#636F646540673130636F64652E636F6D,
CN=g10 Code GmbH,O=g10 Code GmbH,L=Erkrath,ST=Nordrhein-Westfalen,C=DE
sha2_fpr: E0:4D:CD:E2:C9:EA:51:F3:34:63:CC:16:05:F2:9E:01:C2:84:F1:8F:ED:C8:E6:A6:42:05:EE:81:11:EF:BE:8C
sha1_fpr: 42:DE:0F:25:84:8B:D2:E4:41:62:E1:BF:29:CD:97:0E:EB:70:F6:48
md5_fpr: 89:A8:7B:01:99:1B:74:AD:75:86:20:C3:AF:36:9E:76
notBefore: 2019-04-23 05:54:41 UTC
notAfter: 2022-06-02 12:12:13 UTC
S/N: 53F647D0F1DBA9E312A05669
Issuer: CN=GlobalSign CodeSigning CA - SHA256 - G3,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: C1:3A:65:96:3A:D5:3E:78:69:4D:D2:23:D5:18:00:77:91:A0:5F:E4
md5_fpr: 4C:AD:36:5A:30:06:B0:A3:6D:BB:1E:30:1E:44:4E:17
notBefore: 2019-03-13 12:15:07
notAfter: 2022-04-30 16:54:41
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
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
73b026d4eae86fe54ee538b73f0311a3cd77aa885343fbda0bffdcac2dfd704f gpg4win-5.0.0.exe 6ef1865357ced9260761a866503ca101521c995eea82dc7b9be6d0ec4a5eee98 gpg4win-5.0.0.tar.xz
SHA1 checksums
ff98a3a6d386981529cbb37521acadeb825728ee gpg4win-5.0.0.exe 3ec9e6d43658f29798cf80c3b2231a87358669f7 gpg4win-5.0.0.tar.xz
OpenPGP signatures
For gpg4win-5.0.0.exe:
https://files.gpg4win.org/gpg4win-5.0.0.exe.sig
For gpg4win-5.0.0.tar.xz:
https://files.gpg4win.org/gpg4win-5.0.0.tar.xz.sig
Since 2021 the signatures are created by one of the official GnuPG release keys (aka certificates) they can be obtained from the GnuPG Homepage or downloaded from public keyservers.
Previous public key (used up to 2021):
Intevation File Distribution Key
(Fingerprint: 13E3 CE81 AFEA 6F68 3E46 6E0D 42D8 7608 2688 DA1A)
Previous public key (used up to 2016):
Intevation File Distribution Key
(Fingerprint: 61AC 3F5E E4BE 593C 13D6 8B1E 7CBD 620B EC70 B1B8)
Checking the signature is best done via the File Explorer: Right click on the file and use GpgEX options -> verify.
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:
44176488 bytes for gpg4win-5.0.0.exe 266778168 bytes for gpg4win-5.0.0.tar.xz
