pgp.rs (18101B)
1 //! This module provides authentication using PGP signatures. 2 //! 3 //! The public key and signature may be provided both as literal values from the individual PGP packets (i.e. raw public key and signature), 4 //! or as the conventional packet bundle. 5 //! 6 //! If using bundle, the encoded data must be from the binary content, e.g. the output value of: 7 //! 8 //! ``` ignore, 9 //! gpg -b <file> 10 //! ``` 11 //! 12 //! Does not work for ECC secp256k1 signature. 13 use std::io::Read; 14 use crate::auth::{ 15 AuthSpec, 16 AuthError, 17 AuthResult, 18 }; 19 use pgp::packet::{ 20 PublicKey, 21 PacketParser, 22 Signature, 23 }; 24 //use pgp::errors::Error; 25 use pgp::types::{ 26 Tag, 27 Version, 28 KeyTrait, 29 }; 30 use pgp::composed::{ 31 SignedPublicKey, 32 Deserializable, 33 StandaloneSignature, 34 }; 35 use pgp::ser::Serialize; 36 use pgp::de::Deserialize; 37 use base64; 38 39 use log::{debug, info, error}; 40 41 42 fn check_key_single(data: &Vec<u8>) -> Option<PublicKey> { 43 match PublicKey::from_slice(Version::Old, &data) { 44 Ok(v) => { 45 return Some(v); 46 }, 47 Err(e) => { 48 }, 49 }; 50 None 51 } 52 53 fn check_key_bundle(data: &Vec<u8>) -> Option<PublicKey> { 54 match SignedPublicKey::from_bytes(&data[..]) { 55 Ok(v) => { 56 return Some(v.primary_key); 57 }, 58 Err(e) => {}, 59 }; 60 None 61 62 // let mut packets = PacketParser::new(&data[..]); 63 // loop { 64 // match packets.next() { 65 // Some(packet) => { 66 // let v = packet.unwrap(); 67 // if v.tag() == Tag::PublicKey { 68 // //Some(v) => { 69 // let packet_bytes = v.to_bytes().unwrap(); 70 // //let key_pub = PublicKey::from_slice(v.packet_version(), &packet_bytes[..]).unwrap(); 71 // let key_pub_composed = SignedPublicKey::from_bytes(&packet_bytes[..]).unwrap(); 72 // return Some(key_pub_composed.primary_key); 73 // } 74 // }, 75 // None => { 76 // break; 77 // }, 78 // //}, 79 // //_ => {}, 80 // }; 81 // }; 82 // None 83 } 84 85 fn check_sig_single(public_key: &PublicKey, signature_data: Vec<u8>, mut message: impl Read, message_length: usize) -> bool { 86 match Signature::from_slice(Version::Old, &signature_data) { 87 Ok(v) => { 88 match v.verify(public_key, message) { 89 Ok(v) => { 90 return true; 91 }, 92 _ => {}, 93 }; 94 }, 95 _ => {}, 96 }; 97 false 98 } 99 100 fn check_sig_bundle(public_key: &PublicKey, signature_data: Vec<u8>, mut message: impl Read, message_length: usize) -> bool { 101 match StandaloneSignature::from_bytes(&signature_data[..]) { 102 Ok(v) => { 103 let mut data: Vec<u8> = vec!(); 104 let r = message.read_to_end(&mut data); 105 match v.verify(public_key, &data) { 106 Ok(v) => { 107 return true; 108 }, 109 _ => {}, 110 }; 111 }, 112 _ => {}, 113 }; 114 false 115 } 116 117 /// Verifies the given [auth::AuthSpec](crate::auth::AuthSpec) structure against the `pgp` scheme. 118 /// 119 /// The `key` and `signature` fields of the [auth::AuthSpec](crate::auth::AuthSpec) **MUST** be 120 /// base64 encoded. 121 /// 122 /// # Arguments 123 /// 124 /// * `auth` - Authentication data submitted by client. 125 /// * `data` - Content body submitted by client, to match signature against. 126 /// * `data_length` - Length of content body. 127 pub fn auth_check(auth: &AuthSpec, data: impl Read, data_length: usize) -> Result<AuthResult, AuthError> { 128 if auth.method != "pgp" { 129 return Err(AuthError{}); 130 } 131 132 let key_data = match base64::decode(&auth.key) { 133 Ok(v) => { 134 v 135 }, 136 Err(e) => { 137 return Err(AuthError{}); 138 } 139 }; 140 141 debug!("signature data {:?}", auth.signature); 142 let sig_data = match base64::decode(&auth.signature) { 143 Ok(v) => { 144 v 145 }, 146 Err(e) => { 147 return Err(AuthError{}); 148 } 149 }; 150 151 152 let key = match check_key_single(&key_data) { 153 Some(v) => { 154 debug!("using public key (raw) {:?}", v.key_id()); 155 if !check_sig_single(&v, sig_data, data, data_length) { 156 error!("invalid raw signature for {:?}", hex::encode(&v.fingerprint())); 157 return Err(AuthError{}); 158 } 159 debug!("found valid raw key {:?}", hex::encode(&v.fingerprint())); 160 v 161 }, 162 None => { 163 let key = match check_key_bundle(&key_data) { 164 Some(v) => { 165 debug!("using public key (bundle) {:?}", v.key_id()); 166 if !check_sig_bundle(&v, sig_data, data, data_length) { 167 error!("invalid bundle signature for {:?}", hex::encode(&v.fingerprint())); 168 return Err(AuthError{}); 169 } 170 debug!("found valid key bundle {:?}", hex::encode(&v.fingerprint())); 171 v 172 }, 173 None => { 174 return Err(AuthError{}); 175 }, 176 }; 177 key 178 }, 179 }; 180 181 182 let res = AuthResult { 183 identity: key.fingerprint(), 184 error: false, 185 }; 186 Ok(res) 187 } 188 189 #[cfg(test)] 190 mod tests { 191 192 use super::auth_check; 193 use super::AuthSpec; 194 use std::str::FromStr; 195 use super::{ 196 check_key_bundle, 197 check_key_single, 198 check_sig_single, 199 check_sig_bundle, 200 }; 201 202 203 #[test] 204 fn test_pgp_single() { 205 let key_single_hex = "0462a9f5a916092b06010401da470f0101074061f06baae76d5115553019e50353890e498652fac873d78003e9e192dd9f3e13"; 206 let sig_foo_single_hex = "0401160a0006050262a9f5a9002109108b21a9d88b4a0c7f1621044ab95b491980f89789ae8fde8b21a9d88b4a0c7f2aba0100b7b06c424cdb67bba97463d2eb3035ead329f62c92fb6100b629df003748131200fd17e8b6dc866aa1662b93a17ff599334002de273b800fc7160634516187b41407"; 207 208 let key_single = hex::decode(&key_single_hex).unwrap(); 209 let key_single_base64 = base64::encode(&key_single); 210 211 let sig_foo_single = hex::decode(&sig_foo_single_hex).unwrap(); 212 let sig_foo_single_base64 = base64::encode(&sig_foo_single); 213 214 let auth_spec_str = format!("PUBSIG pgp:{}:{}", key_single_base64, sig_foo_single_base64); 215 let auth_spec = AuthSpec::from_str(&auth_spec_str).unwrap(); 216 217 let data = b"foo"; 218 let r = match check_key_single(&key_single) { 219 Some(v) => { 220 if !check_sig_single(&v, sig_foo_single, &data[..], 0) { 221 panic!("invalid"); 222 } 223 }, 224 None => { 225 panic!("no public key"); 226 }, 227 }; 228 229 } 230 231 232 #[test] 233 fn test_pgp_bundle() { 234 let key_bundle_hex = "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"; 235 let sig_foo_bundle_hex = "8901b304000108001d162104f3faf668e82ef5124d5187baef26f4682343f692050262b426d7000a0910ef26f4682343f6922fc50bff526ff1fb6de59bd022f4f71389b7d429040fcf4f3c6889b015de95dd1562b9ff197c7cb24040370c7a68c08c0b2430e034456f71a0c3b1c8c4bfacf6dd37e3d3305563b59c157c015d33a360395daefd9f4cd9370fd3e75c201d491a2008bead964f31955cd9bd3b09ef3647d4b92188fedcabbbfdefdb70a5c345c4f94ad1cacfe10b12782731d49ef516d2223dc2e01c4dedaffa558794339ee866244f7bcf4e2daeffb1d2501dd969837163e8eebc9b58fa0d6e75e6e119753c9bd7b621ef4a73f1953bd2ab69e8241d17ae5dcb900cf6f9575d2038152769dece1baf446cd1adcfb6e742ed0980519de3ca4c7360ef70e4cf38cafb504d5b04144fae0786e8d8c65c5c1475ca723bbbb5fed2416f10f0fd82a4e2bd6c5590e8f018c85941f63dd4ca5f3784760facca9a5c68a01b5ddde25887a492475ae611bfbb359a281b0052c1674d1cf6646f84b75293f1820bb5cf5a2a029e02b7c54177fb92e1184b14b646a80d37da28c9715aad37f9609d7c866881a2efe51e931cccc38d438f"; 236 237 let key_bundle = hex::decode(&key_bundle_hex).unwrap(); 238 let key_bundle_base64 = base64::encode(&key_bundle); 239 240 let sig_foo_bundle = hex::decode(&sig_foo_bundle_hex).unwrap(); 241 let sig_foo_bundle_base64 = base64::encode(&sig_foo_bundle); 242 243 let data = b"foo"; 244 245 let r = match check_key_bundle(&key_bundle) { 246 Some(v) => { 247 if !check_sig_bundle(&v, sig_foo_bundle, &data[..], 0) { 248 panic!("invalid"); 249 } 250 }, 251 None => { 252 panic!("no public key"); 253 }, 254 }; 255 } 256 257 258 #[test] 259 fn test_pgp_auth_single() { 260 let key_single_hex = "0462a9f5a916092b06010401da470f0101074061f06baae76d5115553019e50353890e498652fac873d78003e9e192dd9f3e13"; 261 let sig_foo_single_hex = "0401160a0006050262a9f5a9002109108b21a9d88b4a0c7f1621044ab95b491980f89789ae8fde8b21a9d88b4a0c7f2aba0100b7b06c424cdb67bba97463d2eb3035ead329f62c92fb6100b629df003748131200fd17e8b6dc866aa1662b93a17ff599334002de273b800fc7160634516187b41407"; 262 263 let key_single = hex::decode(&key_single_hex).unwrap(); 264 let key_single_base64 = base64::encode(&key_single); 265 266 let sig_foo_single = hex::decode(&sig_foo_single_hex).unwrap(); 267 let sig_foo_single_base64 = base64::encode(&sig_foo_single); 268 269 let auth_spec_str = format!("PUBSIG pgp:{}:{}", key_single_base64, sig_foo_single_base64); 270 let auth_spec = AuthSpec::from_str(&auth_spec_str).unwrap(); 271 272 let data = b"foo"; 273 274 match auth_check(&auth_spec, &data[..], 0) { 275 Ok(v) => { 276 }, 277 Err(e) => { 278 panic!("{}", e); 279 }, 280 } 281 } 282 283 #[test] 284 fn test_pgp_auth_bundle() { 285 let key_bundle_hex = "99018d045fa148e8010c00a990f4048c00e39d0b63980b1d3d8a71e4df8e3090588f50c0a0862c0ed57abdb701250b7de0e9b7c65ed1061bfd9b6a0b8333ec891c230841515b2352bb4054a790858dc5df9b44b82b67a0c787ab1674e74920bd4bab6654dad53445ef49c13ab0a027989ec9357d44c49b848963db50345627586823df8047ef0438d78944ba3f8f4369f92e081439f43ecc5d4fe481d06634cf6704823be3a0faf8956f4801bf05b7d4c3629fa63b37a39f5160ec2b88ae5051480bfeb23edb550c35e5d8754a96f0b52e71c6e6c26bc1311062380725e6797751d0a649f8403992c3b4892b10ffa8a948e75283e8b49e2382945366d4ffce85b52c600c4251f897eb9e05327db3a315411232777bb974a47ee4b6875ac4472d3e87d02c103d2d20d421e8ea26c5349e9c3f0c70c3daebf11befc0ea5815f4bf044e5be0a7c47378e09fd9b1ee88a618cfceedc6f905c2c5e0535f936716e4fa6b4205b9e0b153cb35aad8fca1a45492feca1707443d0f978c1751de9ab90b98eaf43d02e2a2093d567b6b0011010001b41e4d6572204d616e203c6d65726d616e4067726579736b756c6c2e636f6d3e8901d404130108003e162104f3faf668e82ef5124d5187baef26f4682343f69205025fa148e8021b03050903c26700050b0908070206150a09080b020416020301021e01021780000a0910ef26f4682343f692f08b0c0084525b03250ad394c929f0f3f35ef9ecde3bd924ed07cb1faf46aec2646bf19b35bad1d154cd1bfe39234eea38b8936bed85552932a013bfab27ea70866df0953438e0b54b8c1c96022ffb35683713d6f67a59beaa47e09bf45f16ddef92e3b1192c99c8814587efedc2fea20013efafac3b319c2b15a4b450fde0d5519ae5316a83a28dc6877d1ff80f2f1bf8e65bad5dfdd5bc1653269af5a719fb68b1e51731322203596cffcdd50178e064ab37f9340df2fadf5b198dab945da6576e2e711ac28a098c09d60deae7cee98ba9937535779f484a815ba2a4ef211b2e7ef9878ebfe857b02c43c3267e4a1bfea9abddfd26a9c58802744b9ebb038d2057ec22c58277748272329789c4d310532ef27bc199fef1ba8da1bfabc43b1a228e55d5fb82e41abb24741f19320f0fcb0131e832e60e89209c08532eb4dcd5285b90eb50df23638f214aec10e9aa86ec25a97a77c4a96e171c5092dea5a4a6b24d02809b138e1025e84c17d046204e8de43f97d272aadb0fc57041a4fc09c138ac2578b9018d045fa148e8010c00c7b694d3d64e31fba14de4e794469280688b283c7821909da56fac969844826be0da47a19700a95b7742fd50c7172ea9da0a7e12a59bdb7fc84fe1f251816751979b9537fae6c956d92d456333c35c55d15122b4ec372bb898b066c9d737880ffdd2c09310e8fd7bb0d2bf12e698b163a70339c572ddeb3d25ebef46fb0a0d980457552dd5fd1af2167b72282dc04c2a95949a10046e394e3da0308ba7a5a7532575a6762a28a1e196dec2de52fe4c33df26481e128ca46526a18f363c7994ee8c9896d979767f2ff68ee84b175100f687cd96a61965e2ba466163e21d3098a99622a8d62be84df1529cdcbd6569dee09854958fe83b35d7ba7b068c8a573d34cb10bd95e745ddea6992d656a85568c02322850137ebbe8bdc30d366c9c97f5ffcc4a521e54d8c8f7941be396f08408a8b4d2aa3c6f59a7fce9254232794f85b34eb1fa5feff3a5ecfc6649ad70e6b21dd50a0ffeb8ae867d7576d71bf869e40f945a3f2849560a83640d03002767e6a2676295444fd8eb50c280583a09cc7f700110100018901bc041801080026162104f3faf668e82ef5124d5187baef26f4682343f69205025fa148e8021b0c050903c26700000a0910ef26f4682343f69220f70bff78ea2f60364a60beb3404ee2f30f11f0a96b6819fefa356b3ce3522799bb95a12316f98a4d15e93ef9116e45d0e7998fda97234ea05be20cf3e0ba226520691de5e3b52306204fabeb8a3bd42e4ff9ceb5b4acd9d5e84cd08b31037b325add5018b1fa59ea6591920e087a9ffb95c80630f12878737ff7b611d4891ef1cd5286c402834fc2e8563847b214f362e42af0caa57efc1523878448b6abc90f98fa3e7e54b0f348b80f0279c8a85fee8b62508de7c9c66fd52e860d68f00676aa33feefd1d139b3f786d951f2e3810683a14a67c58cb02b624695fde63d9dcf3568f1273b904c5e467b96f3fd3ca59d1608c814fb283ee868a1ceeb67e10db60f2787fde2264de01ea79d301e3f7e3314396451b5f8007b9d5d4edbbf14f939493dc7d736b63ef1c3140768486adbe26c616d04570dbb44b85bca69c17cb8d555492d345d27406bd4d93128730e29af66640c74244a795b35ae24ba394bed5cdba67120c8e9a2e5eafd19a22e5525400e8bc1bbea73fcebf5cbfde351ef2167f2a579"; 286 let sig_foo_bundle_hex = "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"; 287 288 let key_bundle = hex::decode(&key_bundle_hex).unwrap(); 289 let key_bundle_base64 = base64::encode(&key_bundle); 290 291 let sig_foo_bundle = hex::decode(&sig_foo_bundle_hex).unwrap(); 292 let sig_foo_bundle_base64 = base64::encode(&sig_foo_bundle); 293 294 let auth_spec_str = format!("PUBSIG pgp:{}:{}", key_bundle_base64, sig_foo_bundle_base64); 295 let auth_spec = AuthSpec::from_str(&auth_spec_str).unwrap(); 296 297 let data = b"foo"; 298 299 match auth_check(&auth_spec, &data[..], 0) { 300 Ok(v) => { 301 }, 302 Err(e) => { 303 panic!("{}", e); 304 }, 305 } 306 } 307 }