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+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2007-2015. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+-module(make_certs).
+-compile([export_all]).
+
+%-export([all/1, all/2, rootCA/2, intermediateCA/3, endusers/3, enduser/3, revoke/3, gencrl/2, verify/3]).
+
+-record(config, {commonName,
+ organizationalUnitName = "Erlang OTP",
+ organizationName = "Ericsson AB",
+ localityName = "Stockholm",
+ countryName = "SE",
+ emailAddress = "[email protected]",
+ default_bits = 2048,
+ v2_crls = true,
+ ecc_certs = false,
+ issuing_distribution_point = false,
+ crl_port = 8000,
+ openssl_cmd = "openssl"}).
+
+
+default_config() ->
+ #config{}.
+
+make_config(Args) ->
+ make_config(Args, #config{}).
+
+make_config([], C) ->
+ C;
+make_config([{organizationalUnitName, Name}|T], C) when is_list(Name) ->
+ make_config(T, C#config{organizationalUnitName = Name});
+make_config([{organizationName, Name}|T], C) when is_list(Name) ->
+ make_config(T, C#config{organizationName = Name});
+make_config([{localityName, Name}|T], C) when is_list(Name) ->
+ make_config(T, C#config{localityName = Name});
+make_config([{countryName, Name}|T], C) when is_list(Name) ->
+ make_config(T, C#config{countryName = Name});
+make_config([{emailAddress, Name}|T], C) when is_list(Name) ->
+ make_config(T, C#config{emailAddress = Name});
+make_config([{default_bits, Bits}|T], C) when is_integer(Bits) ->
+ make_config(T, C#config{default_bits = Bits});
+make_config([{v2_crls, Bool}|T], C) when is_boolean(Bool) ->
+ make_config(T, C#config{v2_crls = Bool});
+make_config([{crl_port, Port}|T], C) when is_integer(Port) ->
+ make_config(T, C#config{crl_port = Port});
+make_config([{ecc_certs, Bool}|T], C) when is_boolean(Bool) ->
+ make_config(T, C#config{ecc_certs = Bool});
+make_config([{issuing_distribution_point, Bool}|T], C) when is_boolean(Bool) ->
+ make_config(T, C#config{issuing_distribution_point = Bool});
+make_config([{openssl_cmd, Cmd}|T], C) when is_list(Cmd) ->
+ make_config(T, C#config{openssl_cmd = Cmd}).
+
+
+all([DataDir, PrivDir]) ->
+ all(DataDir, PrivDir).
+
+all(DataDir, PrivDir) ->
+ all(DataDir, PrivDir, #config{}).
+
+all(DataDir, PrivDir, C) when is_list(C) ->
+ all(DataDir, PrivDir, make_config(C));
+all(DataDir, PrivDir, C = #config{}) ->
+ ok = filelib:ensure_dir(filename:join(PrivDir, "erlangCA")),
+ create_rnd(DataDir, PrivDir), % For all requests
+ rootCA(PrivDir, "erlangCA", C),
+ intermediateCA(PrivDir, "otpCA", "erlangCA", C),
+ endusers(PrivDir, "otpCA", ["client", "server", "revoked", "a.server", "b.server"], C),
+ endusers(PrivDir, "erlangCA", ["localhost"], C),
+ %% Create keycert files
+ SDir = filename:join([PrivDir, "server"]),
+ SC = filename:join([SDir, "cert.pem"]),
+ SK = filename:join([SDir, "key.pem"]),
+ SKC = filename:join([SDir, "keycert.pem"]),
+ append_files([SK, SC], SKC),
+ CDir = filename:join([PrivDir, "client"]),
+ CC = filename:join([CDir, "cert.pem"]),
+ CK = filename:join([CDir, "key.pem"]),
+ CKC = filename:join([CDir, "keycert.pem"]),
+ append_files([CK, CC], CKC),
+ RDir = filename:join([PrivDir, "revoked"]),
+ RC = filename:join([RDir, "cert.pem"]),
+ RK = filename:join([RDir, "key.pem"]),
+ RKC = filename:join([RDir, "keycert.pem"]),
+ revoke(PrivDir, "otpCA", "revoked", C),
+ append_files([RK, RC], RKC),
+ remove_rnd(PrivDir),
+ {ok, C}.
+
+append_files(FileNames, ResultFileName) ->
+ {ok, ResultFile} = file:open(ResultFileName, [write]),
+ do_append_files(FileNames, ResultFile).
+
+do_append_files([], RF) ->
+ ok = file:close(RF);
+do_append_files([F|Fs], RF) ->
+ {ok, Data} = file:read_file(F),
+ ok = file:write(RF, Data),
+ do_append_files(Fs, RF).
+
+rootCA(Root, Name, C) ->
+ create_ca_dir(Root, Name, ca_cnf(C#config{commonName = Name})),
+ create_self_signed_cert(Root, Name, req_cnf(C#config{commonName = Name}), C),
+ file:copy(filename:join([Root, Name, "cert.pem"]), filename:join([Root, Name, "cacerts.pem"])),
+ gencrl(Root, Name, C).
+
+intermediateCA(Root, CA, ParentCA, C) ->
+ create_ca_dir(Root, CA, ca_cnf(C#config{commonName = CA})),
+ CARoot = filename:join([Root, CA]),
+ CnfFile = filename:join([CARoot, "req.cnf"]),
+ file:write_file(CnfFile, req_cnf(C#config{commonName = CA})),
+ KeyFile = filename:join([CARoot, "private", "key.pem"]),
+ ReqFile = filename:join([CARoot, "req.pem"]),
+ create_req(Root, CnfFile, KeyFile, ReqFile, C),
+ CertFile = filename:join([CARoot, "cert.pem"]),
+ sign_req(Root, ParentCA, "ca_cert", ReqFile, CertFile, C),
+ CACertsFile = filename:join(CARoot, "cacerts.pem"),
+ file:copy(filename:join([Root, ParentCA, "cacerts.pem"]), CACertsFile),
+ %% append this CA's cert to the cacerts file
+ {ok, Bin} = file:read_file(CertFile),
+ {ok, FD} = file:open(CACertsFile, [append]),
+ file:write(FD, ["\n", Bin]),
+ file:close(FD),
+ gencrl(Root, CA, C).
+
+endusers(Root, CA, Users, C) ->
+ [enduser(Root, CA, User, C) || User <- Users].
+
+enduser(Root, CA, User, C) ->
+ UsrRoot = filename:join([Root, User]),
+ file:make_dir(UsrRoot),
+ CnfFile = filename:join([UsrRoot, "req.cnf"]),
+ file:write_file(CnfFile, req_cnf(C#config{commonName = User})),
+ KeyFile = filename:join([UsrRoot, "key.pem"]),
+ ReqFile = filename:join([UsrRoot, "req.pem"]),
+ create_req(Root, CnfFile, KeyFile, ReqFile, C),
+ %create_req(Root, CnfFile, KeyFile, ReqFile),
+ CertFileAllUsage = filename:join([UsrRoot, "cert.pem"]),
+ sign_req(Root, CA, "user_cert", ReqFile, CertFileAllUsage, C),
+ CertFileDigitalSigOnly = filename:join([UsrRoot, "digital_signature_only_cert.pem"]),
+ sign_req(Root, CA, "user_cert_digital_signature_only", ReqFile, CertFileDigitalSigOnly, C),
+ CACertsFile = filename:join(UsrRoot, "cacerts.pem"),
+ file:copy(filename:join([Root, CA, "cacerts.pem"]), CACertsFile),
+ ok.
+
+revoke(Root, CA, User, C) ->
+ UsrCert = filename:join([Root, User, "cert.pem"]),
+ CACnfFile = filename:join([Root, CA, "ca.cnf"]),
+ Cmd = [C#config.openssl_cmd, " ca"
+ " -revoke ", UsrCert,
+ [" -crl_reason keyCompromise" || C#config.v2_crls ],
+ " -config ", CACnfFile],
+ Env = [{"ROOTDIR", filename:absname(Root)}],
+ cmd(Cmd, Env),
+ gencrl(Root, CA, C).
+
+gencrl(Root, CA, C) ->
+ CACnfFile = filename:join([Root, CA, "ca.cnf"]),
+ CACRLFile = filename:join([Root, CA, "crl.pem"]),
+ Cmd = [C#config.openssl_cmd, " ca"
+ " -gencrl ",
+ " -crlhours 24",
+ " -out ", CACRLFile,
+ " -config ", CACnfFile],
+ Env = [{"ROOTDIR", filename:absname(Root)}],
+ cmd(Cmd, Env).
+
+verify(Root, CA, User, C) ->
+ CAFile = filename:join([Root, User, "cacerts.pem"]),
+ CACRLFile = filename:join([Root, CA, "crl.pem"]),
+ CertFile = filename:join([Root, User, "cert.pem"]),
+ Cmd = [C#config.openssl_cmd, " verify"
+ " -CAfile ", CAFile,
+ " -CRLfile ", CACRLFile, %% this is undocumented, but seems to work
+ " -crl_check ",
+ CertFile],
+ Env = [{"ROOTDIR", filename:absname(Root)}],
+ try cmd(Cmd, Env) catch
+ exit:{eval_cmd, _, _} ->
+ invalid
+ end.
+
+create_self_signed_cert(Root, CAName, Cnf, C = #config{ecc_certs = true}) ->
+ CARoot = filename:join([Root, CAName]),
+ CnfFile = filename:join([CARoot, "req.cnf"]),
+ file:write_file(CnfFile, Cnf),
+ KeyFile = filename:join([CARoot, "private", "key.pem"]),
+ CertFile = filename:join([CARoot, "cert.pem"]),
+ Cmd = [C#config.openssl_cmd, " ecparam"
+ " -out ", KeyFile,
+ " -name secp521r1 ",
+ %" -name sect283k1 ",
+ " -genkey "],
+ Env = [{"ROOTDIR", filename:absname(Root)}],
+ cmd(Cmd, Env),
+
+ Cmd2 = [C#config.openssl_cmd, " req"
+ " -new"
+ " -x509"
+ " -config ", CnfFile,
+ " -key ", KeyFile,
+ " -outform PEM ",
+ " -out ", CertFile],
+ cmd(Cmd2, Env);
+create_self_signed_cert(Root, CAName, Cnf, C) ->
+ CARoot = filename:join([Root, CAName]),
+ CnfFile = filename:join([CARoot, "req.cnf"]),
+ file:write_file(CnfFile, Cnf),
+ KeyFile = filename:join([CARoot, "private", "key.pem"]),
+ CertFile = filename:join([CARoot, "cert.pem"]),
+ Cmd = [C#config.openssl_cmd, " req"
+ " -new"
+ " -x509"
+ " -config ", CnfFile,
+ " -keyout ", KeyFile,
+ " -outform PEM",
+ " -out ", CertFile],
+ Env = [{"ROOTDIR", filename:absname(Root)}],
+ cmd(Cmd, Env).
+
+
+create_ca_dir(Root, CAName, Cnf) ->
+ CARoot = filename:join([Root, CAName]),
+ ok = filelib:ensure_dir(CARoot),
+ file:make_dir(CARoot),
+ create_dirs(CARoot, ["certs", "crl", "newcerts", "private"]),
+ create_rnd(Root, filename:join([CAName, "private"])),
+ create_files(CARoot, [{"serial", "01\n"},
+ {"crlnumber", "01"},
+ {"index.txt", ""},
+ {"ca.cnf", Cnf}]).
+
+create_req(Root, CnfFile, KeyFile, ReqFile, C = #config{ecc_certs = true}) ->
+ Cmd = [C#config.openssl_cmd, " ecparam"
+ " -out ", KeyFile,
+ " -name secp521r1 ",
+ %" -name sect283k1 ",
+ " -genkey "],
+ Env = [{"ROOTDIR", filename:absname(Root)}],
+ cmd(Cmd, Env),
+ Cmd2 = [C#config.openssl_cmd, " req"
+ " -new ",
+ " -key ", KeyFile,
+ " -outform PEM ",
+ " -out ", ReqFile,
+ " -config ", CnfFile],
+ cmd(Cmd2, Env);
+ %fix_key_file(KeyFile).
+create_req(Root, CnfFile, KeyFile, ReqFile, C) ->
+ Cmd = [C#config.openssl_cmd, " req"
+ " -new"
+ " -config ", CnfFile,
+ " -outform PEM ",
+ " -keyout ", KeyFile,
+ " -out ", ReqFile],
+ Env = [{"ROOTDIR", filename:absname(Root)}],
+ cmd(Cmd, Env).
+ %fix_key_file(KeyFile).
+
+
+sign_req(Root, CA, CertType, ReqFile, CertFile, C) ->
+ CACnfFile = filename:join([Root, CA, "ca.cnf"]),
+ Cmd = [C#config.openssl_cmd, " ca"
+ " -batch"
+ " -notext"
+ " -config ", CACnfFile,
+ " -extensions ", CertType,
+ " -in ", ReqFile,
+ " -out ", CertFile],
+ Env = [{"ROOTDIR", filename:absname(Root)}],
+ cmd(Cmd, Env).
+
+%%
+%% Misc
+%%
+
+create_dirs(Root, Dirs) ->
+ lists:foreach(fun(Dir) ->
+ file:make_dir(filename:join([Root, Dir])) end,
+ Dirs).
+
+create_files(Root, NameContents) ->
+ lists:foreach(
+ fun({Name, Contents}) ->
+ file:write_file(filename:join([Root, Name]), Contents) end,
+ NameContents).
+
+create_rnd(FromDir, ToDir) ->
+ From = filename:join([FromDir, "RAND"]),
+ To = filename:join([ToDir, "RAND"]),
+ file:copy(From, To).
+
+remove_rnd(Dir) ->
+ File = filename:join([Dir, "RAND"]),
+ file:delete(File).
+
+cmd(Cmd, Env) ->
+ FCmd = lists:flatten(Cmd),
+ Port = open_port({spawn, FCmd}, [stream, eof, exit_status, stderr_to_stdout,
+ {env, Env}]),
+ eval_cmd(Port, FCmd).
+
+eval_cmd(Port, Cmd) ->
+ receive
+ {Port, {data, _}} ->
+ eval_cmd(Port, Cmd);
+ {Port, eof} ->
+ ok
+ end,
+ receive
+ {Port, {exit_status, 0}} ->
+ ok;
+ {Port, {exit_status, Status}} ->
+ exit({eval_cmd, Cmd, Status})
+ after 0 ->
+ ok
+ end.
+
+%%
+%% Contents of configuration files
+%%
+
+req_cnf(C) ->
+ ["# Purpose: Configuration for requests (end users and CAs)."
+ "\n"
+ "ROOTDIR = $ENV::ROOTDIR\n"
+ "\n"
+
+ "[req]\n"
+ "input_password = secret\n"
+ "output_password = secret\n"
+ "default_bits = ", integer_to_list(C#config.default_bits), "\n"
+ "RANDFILE = $ROOTDIR/RAND\n"
+ "encrypt_key = no\n"
+ "default_md = md5\n"
+ "#string_mask = pkix\n"
+ "x509_extensions = ca_ext\n"
+ "prompt = no\n"
+ "distinguished_name= name\n"
+ "\n"
+
+ "[name]\n"
+ "commonName = ", C#config.commonName, "\n"
+ "organizationalUnitName = ", C#config.organizationalUnitName, "\n"
+ "organizationName = ", C#config.organizationName, "\n"
+ "localityName = ", C#config.localityName, "\n"
+ "countryName = ", C#config.countryName, "\n"
+ "emailAddress = ", C#config.emailAddress, "\n"
+ "\n"
+
+ "[ca_ext]\n"
+ "basicConstraints = critical, CA:true\n"
+ "keyUsage = cRLSign, keyCertSign\n"
+ "subjectKeyIdentifier = hash\n"
+ "subjectAltName = email:copy\n"].
+
+ca_cnf(C = #config{issuing_distribution_point = true}) ->
+ ["# Purpose: Configuration for CAs.\n"
+ "\n"
+ "ROOTDIR = $ENV::ROOTDIR\n"
+ "default_ca = ca\n"
+ "\n"
+
+ "[ca]\n"
+ "dir = $ROOTDIR/", C#config.commonName, "\n"
+ "certs = $dir/certs\n"
+ "crl_dir = $dir/crl\n"
+ "database = $dir/index.txt\n"
+ "new_certs_dir = $dir/newcerts\n"
+ "certificate = $dir/cert.pem\n"
+ "serial = $dir/serial\n"
+ "crl = $dir/crl.pem\n",
+ ["crlnumber = $dir/crlnumber\n" || C#config.v2_crls],
+ "private_key = $dir/private/key.pem\n"
+ "RANDFILE = $dir/private/RAND\n"
+ "\n"
+ "x509_extensions = user_cert\n",
+ ["crl_extensions = crl_ext\n" || C#config.v2_crls],
+ "unique_subject = no\n"
+ "default_days = 3600\n"
+ "default_md = md5\n"
+ "preserve = no\n"
+ "policy = policy_match\n"
+ "\n"
+
+ "[policy_match]\n"
+ "commonName = supplied\n"
+ "organizationalUnitName = optional\n"
+ "organizationName = match\n"
+ "countryName = match\n"
+ "localityName = match\n"
+ "emailAddress = supplied\n"
+ "\n"
+
+ "[crl_ext]\n"
+ "authorityKeyIdentifier=keyid:always,issuer:always\n",
+ ["issuingDistributionPoint=critical, @idpsec\n" || C#config.issuing_distribution_point],
+
+ "[idpsec]\n"
+ "fullname=URI:http://localhost:8000/",C#config.commonName,"/crl.pem\n"
+
+ "[user_cert]\n"
+ "basicConstraints = CA:false\n"
+ "keyUsage = nonRepudiation, digitalSignature, keyEncipherment\n"
+ "subjectKeyIdentifier = hash\n"
+ "authorityKeyIdentifier = keyid,issuer:always\n"
+ "subjectAltName = email:copy\n"
+ "issuerAltName = issuer:copy\n"
+ "crlDistributionPoints=@crl_section\n"
+
+ "[crl_section]\n"
+ %% intentionally invalid
+ "URI.1=http://localhost/",C#config.commonName,"/crl.pem\n"
+ "URI.2=http://localhost:",integer_to_list(C#config.crl_port),"/",C#config.commonName,"/crl.pem\n"
+ "\n"
+
+ "[user_cert_digital_signature_only]\n"
+ "basicConstraints = CA:false\n"
+ "keyUsage = digitalSignature\n"
+ "subjectKeyIdentifier = hash\n"
+ "authorityKeyIdentifier = keyid,issuer:always\n"
+ "subjectAltName = email:copy\n"
+ "issuerAltName = issuer:copy\n"
+ "\n"
+
+ "[ca_cert]\n"
+ "basicConstraints = critical,CA:true\n"
+ "keyUsage = cRLSign, keyCertSign\n"
+ "subjectKeyIdentifier = hash\n"
+ "authorityKeyIdentifier = keyid:always,issuer:always\n"
+ "subjectAltName = email:copy\n"
+ "issuerAltName = issuer:copy\n"
+ "crlDistributionPoints=@crl_section\n"
+ ];
+
+ca_cnf(C = #config{issuing_distribution_point = false}) ->
+ ["# Purpose: Configuration for CAs.\n"
+ "\n"
+ "ROOTDIR = $ENV::ROOTDIR\n"
+ "default_ca = ca\n"
+ "\n"
+
+ "[ca]\n"
+ "dir = $ROOTDIR/", C#config.commonName, "\n"
+ "certs = $dir/certs\n"
+ "crl_dir = $dir/crl\n"
+ "database = $dir/index.txt\n"
+ "new_certs_dir = $dir/newcerts\n"
+ "certificate = $dir/cert.pem\n"
+ "serial = $dir/serial\n"
+ "crl = $dir/crl.pem\n",
+ ["crlnumber = $dir/crlnumber\n" || C#config.v2_crls],
+ "private_key = $dir/private/key.pem\n"
+ "RANDFILE = $dir/private/RAND\n"
+ "\n"
+ "x509_extensions = user_cert\n",
+ ["crl_extensions = crl_ext\n" || C#config.v2_crls],
+ "unique_subject = no\n"
+ "default_days = 3600\n"
+ "default_md = md5\n"
+ "preserve = no\n"
+ "policy = policy_match\n"
+ "\n"
+
+ "[policy_match]\n"
+ "commonName = supplied\n"
+ "organizationalUnitName = optional\n"
+ "organizationName = match\n"
+ "countryName = match\n"
+ "localityName = match\n"
+ "emailAddress = supplied\n"
+ "\n"
+
+ "[crl_ext]\n"
+ "authorityKeyIdentifier=keyid:always,issuer:always\n",
+ %["issuingDistributionPoint=critical, @idpsec\n" || C#config.issuing_distribution_point],
+
+ %"[idpsec]\n"
+ %"fullname=URI:http://localhost:8000/",C#config.commonName,"/crl.pem\n"
+
+ "[user_cert]\n"
+ "basicConstraints = CA:false\n"
+ "keyUsage = nonRepudiation, digitalSignature, keyEncipherment\n"
+ "subjectKeyIdentifier = hash\n"
+ "authorityKeyIdentifier = keyid,issuer:always\n"
+ "subjectAltName = email:copy\n"
+ "issuerAltName = issuer:copy\n"
+ %"crlDistributionPoints=@crl_section\n"
+
+ %%"[crl_section]\n"
+ %% intentionally invalid
+ %%"URI.1=http://localhost/",C#config.commonName,"/crl.pem\n"
+ %%"URI.2=http://localhost:",integer_to_list(C#config.crl_port),"/",C#config.commonName,"/crl.pem\n"
+ %%"\n"
+
+ "[user_cert_digital_signature_only]\n"
+ "basicConstraints = CA:false\n"
+ "keyUsage = digitalSignature\n"
+ "subjectKeyIdentifier = hash\n"
+ "authorityKeyIdentifier = keyid,issuer:always\n"
+ "subjectAltName = email:copy\n"
+ "issuerAltName = issuer:copy\n"
+ "\n"
+
+ "[ca_cert]\n"
+ "basicConstraints = critical,CA:true\n"
+ "keyUsage = cRLSign, keyCertSign\n"
+ "subjectKeyIdentifier = hash\n"
+ "authorityKeyIdentifier = keyid:always,issuer:always\n"
+ "subjectAltName = email:copy\n"
+ "issuerAltName = issuer:copy\n"
+ %"crlDistributionPoints=@crl_section\n"
+ ].
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-04 15:35:23 +0000