GPG detached signatures and MD5/SHA-1 hashes for each Nmap release are available from https://nmap.org/dist/sigs/?C=M;O=D . The releases are signed by the Nmap project GPG key (KeyId 6B9355D0). Some messages to Nmap mailing lists may be signed by Nmap author and maintainer Fyodor. Fyodor's KeyID is 33599B5F. Those two keys and their fingerprints are reproduced below. The latest version of this file is always available at https://nmap.org/data/nmap_gpgkeys.txt . To verify a file with GPG, obtain and import the keys with a command such as "gpg --import nmap_gpgkeys.txt" and then verify the obtained files as shown in this example: > gpg --verify nmap-3.81.tar.bz2.gpg.txt nmap-3.81.tar.bz2 gpg: Signature made Sat 23 Apr 2005 11:34:32 PM PDT using DSA key ID 6B9355D0 gpg: Good signature from "Nmap Project Signing Key (http://www.insecure.org/)" Here are the GPG keys for the Nmap Project and Fyodor: pub 1024D/6B9355D0 2005-04-24 Key fingerprint = 436D 66AB 9A79 8425 FDA0 E3F8 01AF 9F03 6B93 55D0 uid Nmap Project Signing Key (http://www.insecure.org/) sub 2048g/A50A6A94 2005-04-24 -----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v1.4.1 (GNU/Linux) mQGiBEJrBfgRBADogo5DEoGsm2C3OC3NoKBQ0J7Ixp/cymuMeGQmDhqP6Vfmxmso BGln4nhDr3WMDW76Q2p6dHTZEbWx3NAna8q3wa3PrPTVRcmEgEgUd8y086I33NqW BV5Fz4bvPWtSGc/4MxXwac+XqrGY+iTkaO3sd4/eEKa/KkJlXpIGAbGbZwCgq9HS bHctYmUWmvz1YXJmFlQvnTsD/RRyTlnQ/AOpq2XPYy5AlUzHMWAef2Dt+wXYKSjp zvqVWtl8QigrWSOP3ia39v+rDUF/CHb1U8mmx9XzRpy9KgS99Wi4IUnBCYM/e/IP K5ReAoNoPMjLmLU4cxYzOxF1yzuSFvhXiKVy/QW6Qo9AP9YdlhlxxXrJA+HrAcXb UE/SBACsoJRsIEyzcfm7Y/KA11enEhxo2nVZ/HpJCq8RHcaXxWFaCglKlydNaw1S vlZkLggRXQrig6aHgVva3WC+gSYMk+SPtzYNrjWiDE+v+DoEFdNEuO8DXScTMGmB pmUtZNWGoK9ewo9kE/ccGDl6lmrxfC9x2nYFHlCvV/PJrbTbfLQzTm1hcCBQcm9q ZWN0IFNpZ25pbmcgS2V5IChodHRwOi8vd3d3Lmluc2VjdXJlLm9yZy8piF4EExEC AB4FAkJrBfgCGwMGCwkIBwMCAxUCAwMWAgECHgECF4AACgkQAa+fA2uTVdBGbACf e4qpukKV23yZjlbjEzJeCN8Gyh4AniXrbP7M+ul6zzWTFBgB6heYjKT8iEYEEBEC AAYFAkJrGVAACgkQGvbsUDNZm1+kXgCfbBGI8UxrwiKRbtgYHOUYd6u5qdwAnRFZ ryKFEzkuQGBQWfd6ys6ygjgtuQINBEJrBfoQCADUNWhc7n68jANoWAWl38itVGqI qZEEvchV3m/uslVD0BSn/KRSY9/cZbMTX2hV8eemlGV2suJW4jWB0cQXjZQap4OL WmMexeFA+q1YE803k0X4XgzRuJXkLaX3isCJGbgFRF6IfWmK38/gXz4YVBQXFQXy 4M2Y/o2GBsq8cQVgRAZNTQvN5oh2u8WN0wANk+iKySKqBG3Twgh4BbTaoajidSFR hv3xFPw6dQFTd3fYyDlMcOQQcAdzzlS6hTyZuZLOXLdWckilnlP2/orQ5wUs6nXd QeWuxME56z2vwNNeufoLWqNUlR1/IyRAfownDuvdjxYeIgsDd4DP+jInCpPzAAMG CACZ8ewQdpWJ/4CgC7OT865DurNIQH0udm/CSB0mb3v0IxuuXMJml2yMi2NkJh8X KMaluTznz2x8kpPXgmhu+qosAi+YUbdbP+/ilY6+WqLVQewSr7GmxJy6EWW5s2+S 3V7yneiDQXBUBMr4WwjfOxX7m/+Io7RSLQaWNq82C2fSukqpootVgLV7CaVJMHvZ iA+3AL32N1d6O6h8bUqEyfOw3kIr19e0OhqWSpQrZs3tkUpwH7/vn/4NkAxjodkP JChf1Y89pU98GBC9JxF+mc2mnDVUnUs31S8kQ/6PhZP8ldn47W2CakHSA3S/M99A gltKiG6MR2z018fqD8FJC3tLiEkEGBECAAkFAkJrBfoCGwwACgkQAa+fA2uTVdBM QgCfciVPJeohzn5mJ4WGE/6B1CyCOIYAn2ghTW1IKTP+tfOgxVg/p8HJOoiz =18Dk -----END PGP PUBLIC KEY BLOCK----- pub 1024D/33599B5F 2005-04-24 Key fingerprint = BB61 D057 C0D7 DCEF E730 996C 1AF6 EC50 3359 9B5F uid Fyodor sub 2048g/D3C2241C 2005-04-24 -----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v1.4.1 (GNU/Linux) mQGiBEJrBG4RBADfjVQenTh2v1NK2N0Wi83pGMm0u/IDDX8eT8lxSR+XdevdcK+F bRhVh+tMhTo1T2OoZkBfYj+OVCWsBZlIxZtGycWaGAwn3MbUEiUJD0YVv4pm4KVk HEZSOYEkzUFIw3IP03Cv6wBDrhk5lAu99+sK0iQGeHGw+gBhIuA3axSeBwCgn86p r+C4P3w61musiflp1SosfSsEALwyE7o60S105UTijAn5tswqecZlumQAxQ+DIeC+ 9F8mSujIZn8xb1wJtaZb2F0HU0vd67BaOIDXqO7KVe6Tx6JKf5zup2vaGRvUspNv V8CLuSbT7WnnvTBM5dfBMTJw6xLjOsSTk65Q24xcTJ3f2efnYy9imAMl7EzhalBE 11pfBADVLuhe6rUpRrhaMJRXZJLdE9A2zcHWtM0X3DDe6QhaWU94JivtORKtleGv atGu4or9jwIhXixeBsvu7RP3bWog5jiLgUWJrvJNeLcFQqIWTtIdh5iuInzezxbg Fvst2YIdUrT+QdcYKKTnJNyUgXQBGKQ18ra8oMvakgUqVjrPnbQcRnlvZG9yIDxm eW9kb3JAaW5zZWN1cmUub3JnPoheBBMRAgAeBQJCawRuAhsDBgsJCAcDAgMVAgMD FgIBAh4BAheAAAoJEBr27FAzWZtfZwcAn0iGnn1p6wXuBTj7VQSdglTtJd46AJ9T Gt51/ZUT2yiFG9vsc5CZn5WiRYicBBMBAgAGBQJCaxEpAAoJEM4dPqJTWH2VO4oE AKso+R5gSO9jhtTiCIMoh9CqeboQCbBKzEwDhy7S7gChAHOz6HeOdcsyfnprwsiH I+FjufxvdtmiIENSzyjqGxbMdO+Zoz5JMx1RtzrkjkE4GLVq0c6NzL/36MUtAjEU tCTFXYZW6Lvu6SgnmlmelrAjqs10vZoOrbOlB/l9mn/EuQINBEJrBHIQCACUlrH2 qhVekDKeK9zQlBK2dxcIyPSwP6Tqv+rWvKEzHRUVNBcDSruuNVBNvJC3VQAj0oTA XI+xoWGNx5CInX7qKFaGd9/MlsrEyjasRcY75lkr3QyTSk92q0luX1j+V1uumDWs pacyki0Zt/9FhssjdkljFBPpDRPURxjJdJ6TCq6G0wPjelKsekRNvipIYcrcIs7I EBtqsDCvQBRKgYzjUuziudOMoNFAn6eQHBu/B7RNtRzqTL1ugCjs0AEhLRKw+Ag6 bP3lTjmiR33wxajAuUPKe8abe7CfVPrGmihJSJaqULeldSHTugnf84/hTh9BQKYd EZd3QlF72wRmCcnjAAMGB/4oXK4/BXExfnZ+QbmTIyQGJb/OcWa7Dc9WA6DnaE58 1BeZgYrKFQMdVpAhUMTxeqPIL4EVc6N+BkSk7JHf5+6DoK8KDJ1RJCCgYmdx7zdT /GAZlUFDiYOs4sx75UZZGFcEEDmIHFC4s7B2HPuSfMoq5vBr0qi6pD1HCgyJV0aG jhQdmfkp+fYEibPWrIGTsayQnYiCrVo3W7C7ZplekoAJkcN0rnfJeV1+kj694XSe U6oYj9RaNoTV1xt1lx5Rwl00HwEYHWAsGmT6+pWmbXo5PT7N7OfcmtclICBsrcjC hKcn6WdTitUR+uOXgL+86Th4W/FYdIXAyyC9KTXhMDmfiEkEGBECAAkFAkJrBHIC GwwACgkQGvbsUDNZm19xAgCeNmaeak8iviUmHje1YAePwEFGleEAn26n8sNrVole NtNX5k7XyTWBQUdG =cBzb -----END PGP PUBLIC KEY BLOCK-----