Add FFDHE groups from RFC 7919

1 files changed, 86 insertions, 0 deletions

diff --git a/crypto/src/crypto/agreement/DHStandardGroups.cs b/crypto/src/crypto/agreement/DHStandardGroups.cs
index 425a9784c..0143c6325 100644
--- a/crypto/src/crypto/agreement/DHStandardGroups.cs
+++ b/crypto/src/crypto/agreement/DHStandardGroups.cs
@@ -24,6 +24,13 @@ namespace Org.BouncyCastle.Crypto.Agreement
             return new DHParameters(FromHex(hexP), FromHex(hexG), FromHex(hexQ));
         }
 
+        private static DHParameters Rfc7919Parameters(string hexP, int l)
+        {
+            // NOTE: All the groups in RFC 7919 use safe primes, i.e. q = (p-1)/2, and generator g = 2
+            BigInteger p = FromHex(hexP);
+            return new DHParameters(p, BigInteger.Two, p.ShiftRight(1), l);
+        }
+
         /*
          * RFC 2409
          */
@@ -217,5 +224,84 @@ namespace Org.BouncyCastle.Crypto.Agreement
          */
         public static readonly DHParameters rfc5996_768 = rfc4306_768;
         public static readonly DHParameters rfc5996_1024 = rfc4306_1024;
+
+        /*
+         * RFC 7919
+         */
+        private static readonly string rfc7919_ffdhe2048_p = "FFFFFFFFFFFFFFFFADF85458A2BB4A9AAFDC5620273D3CF1"
+            + "D8B9C583CE2D3695A9E13641146433FBCC939DCE249B3EF9" + "7D2FE363630C75D8F681B202AEC4617AD3DF1ED5D5FD6561"
+            + "2433F51F5F066ED0856365553DED1AF3B557135E7F57C935" + "984F0C70E0E68B77E2A689DAF3EFE8721DF158A136ADE735"
+            + "30ACCA4F483A797ABC0AB182B324FB61D108A94BB2C8E3FB" + "B96ADAB760D7F4681D4F42A3DE394DF4AE56EDE76372BB19"
+            + "0B07A7C8EE0A6D709E02FCE1CDF7E2ECC03404CD28342F61" + "9172FE9CE98583FF8E4F1232EEF28183C3FE3B1B4C6FAD73"
+            + "3BB5FCBC2EC22005C58EF1837D1683B2C6F34A26C1B2EFFA" + "886B423861285C97FFFFFFFFFFFFFFFF";
+        public static readonly DHParameters rfc7919_ffdhe2048 = Rfc7919Parameters(rfc7919_ffdhe2048_p, 225);
+
+        private static readonly string rfc7919_ffdhe3072_p = "FFFFFFFFFFFFFFFFADF85458A2BB4A9AAFDC5620273D3CF1"
+            + "D8B9C583CE2D3695A9E13641146433FBCC939DCE249B3EF9" + "7D2FE363630C75D8F681B202AEC4617AD3DF1ED5D5FD6561"
+            + "2433F51F5F066ED0856365553DED1AF3B557135E7F57C935" + "984F0C70E0E68B77E2A689DAF3EFE8721DF158A136ADE735"
+            + "30ACCA4F483A797ABC0AB182B324FB61D108A94BB2C8E3FB" + "B96ADAB760D7F4681D4F42A3DE394DF4AE56EDE76372BB19"
+            + "0B07A7C8EE0A6D709E02FCE1CDF7E2ECC03404CD28342F61" + "9172FE9CE98583FF8E4F1232EEF28183C3FE3B1B4C6FAD73"
+            + "3BB5FCBC2EC22005C58EF1837D1683B2C6F34A26C1B2EFFA" + "886B4238611FCFDCDE355B3B6519035BBC34F4DEF99C0238"
+            + "61B46FC9D6E6C9077AD91D2691F7F7EE598CB0FAC186D91C" + "AEFE130985139270B4130C93BC437944F4FD4452E2D74DD3"
+            + "64F2E21E71F54BFF5CAE82AB9C9DF69EE86D2BC522363A0D" + "ABC521979B0DEADA1DBF9A42D5C4484E0ABCD06BFA53DDEF"
+            + "3C1B20EE3FD59D7C25E41D2B66C62E37FFFFFFFFFFFFFFFF";
+        public static readonly DHParameters rfc7919_ffdhe3072 = Rfc7919Parameters(rfc7919_ffdhe3072_p, 275);
+
+        private static readonly string rfc7919_ffdhe4096_p = "FFFFFFFFFFFFFFFFADF85458A2BB4A9AAFDC5620273D3CF1"
+            + "D8B9C583CE2D3695A9E13641146433FBCC939DCE249B3EF9" + "7D2FE363630C75D8F681B202AEC4617AD3DF1ED5D5FD6561"
+            + "2433F51F5F066ED0856365553DED1AF3B557135E7F57C935" + "984F0C70E0E68B77E2A689DAF3EFE8721DF158A136ADE735"
+            + "30ACCA4F483A797ABC0AB182B324FB61D108A94BB2C8E3FB" + "B96ADAB760D7F4681D4F42A3DE394DF4AE56EDE76372BB19"
+            + "0B07A7C8EE0A6D709E02FCE1CDF7E2ECC03404CD28342F61" + "9172FE9CE98583FF8E4F1232EEF28183C3FE3B1B4C6FAD73"
+            + "3BB5FCBC2EC22005C58EF1837D1683B2C6F34A26C1B2EFFA" + "886B4238611FCFDCDE355B3B6519035BBC34F4DEF99C0238"
+            + "61B46FC9D6E6C9077AD91D2691F7F7EE598CB0FAC186D91C" + "AEFE130985139270B4130C93BC437944F4FD4452E2D74DD3"
+            + "64F2E21E71F54BFF5CAE82AB9C9DF69EE86D2BC522363A0D" + "ABC521979B0DEADA1DBF9A42D5C4484E0ABCD06BFA53DDEF"
+            + "3C1B20EE3FD59D7C25E41D2B669E1EF16E6F52C3164DF4FB" + "7930E9E4E58857B6AC7D5F42D69F6D187763CF1D55034004"
+            + "87F55BA57E31CC7A7135C886EFB4318AED6A1E012D9E6832" + "A907600A918130C46DC778F971AD0038092999A333CB8B7A"
+            + "1A1DB93D7140003C2A4ECEA9F98D0ACC0A8291CDCEC97DCF" + "8EC9B55A7F88A46B4DB5A851F44182E1C68A007E5E655F6A"
+            + "FFFFFFFFFFFFFFFF";
+        public static readonly DHParameters rfc7919_ffdhe4096 = Rfc7919Parameters(rfc7919_ffdhe4096_p, 325);
+
+        private static readonly string rfc7919_ffdhe6144_p = "FFFFFFFFFFFFFFFFADF85458A2BB4A9AAFDC5620273D3CF1"
+            + "D8B9C583CE2D3695A9E13641146433FBCC939DCE249B3EF9" + "7D2FE363630C75D8F681B202AEC4617AD3DF1ED5D5FD6561"
+            + "2433F51F5F066ED0856365553DED1AF3B557135E7F57C935" + "984F0C70E0E68B77E2A689DAF3EFE8721DF158A136ADE735"
+            + "30ACCA4F483A797ABC0AB182B324FB61D108A94BB2C8E3FB" + "B96ADAB760D7F4681D4F42A3DE394DF4AE56EDE76372BB19"
+            + "0B07A7C8EE0A6D709E02FCE1CDF7E2ECC03404CD28342F61" + "9172FE9CE98583FF8E4F1232EEF28183C3FE3B1B4C6FAD73"
+            + "3BB5FCBC2EC22005C58EF1837D1683B2C6F34A26C1B2EFFA" + "886B4238611FCFDCDE355B3B6519035BBC34F4DEF99C0238"
+            + "61B46FC9D6E6C9077AD91D2691F7F7EE598CB0FAC186D91C" + "AEFE130985139270B4130C93BC437944F4FD4452E2D74DD3"
+            + "64F2E21E71F54BFF5CAE82AB9C9DF69EE86D2BC522363A0D" + "ABC521979B0DEADA1DBF9A42D5C4484E0ABCD06BFA53DDEF"
+            + "3C1B20EE3FD59D7C25E41D2B669E1EF16E6F52C3164DF4FB" + "7930E9E4E58857B6AC7D5F42D69F6D187763CF1D55034004"
+            + "87F55BA57E31CC7A7135C886EFB4318AED6A1E012D9E6832" + "A907600A918130C46DC778F971AD0038092999A333CB8B7A"
+            + "1A1DB93D7140003C2A4ECEA9F98D0ACC0A8291CDCEC97DCF" + "8EC9B55A7F88A46B4DB5A851F44182E1C68A007E5E0DD902"
+            + "0BFD64B645036C7A4E677D2C38532A3A23BA4442CAF53EA6" + "3BB454329B7624C8917BDD64B1C0FD4CB38E8C334C701C3A"
+            + "CDAD0657FCCFEC719B1F5C3E4E46041F388147FB4CFDB477" + "A52471F7A9A96910B855322EDB6340D8A00EF092350511E3"
+            + "0ABEC1FFF9E3A26E7FB29F8C183023C3587E38DA0077D9B4" + "763E4E4B94B2BBC194C6651E77CAF992EEAAC0232A281BF6"
+            + "B3A739C1226116820AE8DB5847A67CBEF9C9091B462D538C" + "D72B03746AE77F5E62292C311562A846505DC82DB854338A"
+            + "E49F5235C95B91178CCF2DD5CACEF403EC9D1810C6272B04" + "5B3B71F9DC6B80D63FDD4A8E9ADB1E6962A69526D43161C1"
+            + "A41D570D7938DAD4A40E329CD0E40E65FFFFFFFFFFFFFFFF";
+        public static readonly DHParameters rfc7919_ffdhe6144 = Rfc7919Parameters(rfc7919_ffdhe6144_p, 375);
+
+        private static readonly string rfc7919_ffdhe8192_p = "FFFFFFFFFFFFFFFFADF85458A2BB4A9AAFDC5620273D3CF1"
+            + "D8B9C583CE2D3695A9E13641146433FBCC939DCE249B3EF9" + "7D2FE363630C75D8F681B202AEC4617AD3DF1ED5D5FD6561"
+            + "2433F51F5F066ED0856365553DED1AF3B557135E7F57C935" + "984F0C70E0E68B77E2A689DAF3EFE8721DF158A136ADE735"
+            + "30ACCA4F483A797ABC0AB182B324FB61D108A94BB2C8E3FB" + "B96ADAB760D7F4681D4F42A3DE394DF4AE56EDE76372BB19"
+            + "0B07A7C8EE0A6D709E02FCE1CDF7E2ECC03404CD28342F61" + "9172FE9CE98583FF8E4F1232EEF28183C3FE3B1B4C6FAD73"
+            + "3BB5FCBC2EC22005C58EF1837D1683B2C6F34A26C1B2EFFA" + "886B4238611FCFDCDE355B3B6519035BBC34F4DEF99C0238"
+            + "61B46FC9D6E6C9077AD91D2691F7F7EE598CB0FAC186D91C" + "AEFE130985139270B4130C93BC437944F4FD4452E2D74DD3"
+            + "64F2E21E71F54BFF5CAE82AB9C9DF69EE86D2BC522363A0D" + "ABC521979B0DEADA1DBF9A42D5C4484E0ABCD06BFA53DDEF"
+            + "3C1B20EE3FD59D7C25E41D2B669E1EF16E6F52C3164DF4FB" + "7930E9E4E58857B6AC7D5F42D69F6D187763CF1D55034004"
+            + "87F55BA57E31CC7A7135C886EFB4318AED6A1E012D9E6832" + "A907600A918130C46DC778F971AD0038092999A333CB8B7A"
+            + "1A1DB93D7140003C2A4ECEA9F98D0ACC0A8291CDCEC97DCF" + "8EC9B55A7F88A46B4DB5A851F44182E1C68A007E5E0DD902"
+            + "0BFD64B645036C7A4E677D2C38532A3A23BA4442CAF53EA6" + "3BB454329B7624C8917BDD64B1C0FD4CB38E8C334C701C3A"
+            + "CDAD0657FCCFEC719B1F5C3E4E46041F388147FB4CFDB477" + "A52471F7A9A96910B855322EDB6340D8A00EF092350511E3"
+            + "0ABEC1FFF9E3A26E7FB29F8C183023C3587E38DA0077D9B4" + "763E4E4B94B2BBC194C6651E77CAF992EEAAC0232A281BF6"
+            + "B3A739C1226116820AE8DB5847A67CBEF9C9091B462D538C" + "D72B03746AE77F5E62292C311562A846505DC82DB854338A"
+            + "E49F5235C95B91178CCF2DD5CACEF403EC9D1810C6272B04" + "5B3B71F9DC6B80D63FDD4A8E9ADB1E6962A69526D43161C1"
+            + "A41D570D7938DAD4A40E329CCFF46AAA36AD004CF600C838" + "1E425A31D951AE64FDB23FCEC9509D43687FEB69EDD1CC5E"
+            + "0B8CC3BDF64B10EF86B63142A3AB8829555B2F747C932665" + "CB2C0F1CC01BD70229388839D2AF05E454504AC78B758282"
+            + "2846C0BA35C35F5C59160CC046FD8251541FC68C9C86B022" + "BB7099876A460E7451A8A93109703FEE1C217E6C3826E52C"
+            + "51AA691E0E423CFC99E9E31650C1217B624816CDAD9A95F9" + "D5B8019488D9C0A0A1FE3075A577E23183F81D4A3F2FA457"
+            + "1EFC8CE0BA8A4FE8B6855DFE72B0A66EDED2FBABFBE58A30" + "FAFABE1C5D71A87E2F741EF8C1FE86FEA6BBFDE530677F0D"
+            + "97D11D49F7A8443D0822E506A9F4614E011E2A94838FF88C" + "D68C8BB7C5C6424CFFFFFFFFFFFFFFFF";
+        public static readonly DHParameters rfc7919_ffdhe8192 = Rfc7919Parameters(rfc7919_ffdhe8192_p, 400);
     }
 }