diff options
Diffstat (limited to 'lib/ssl/src/ssl_certificate.erl')
| -rw-r--r-- | lib/ssl/src/ssl_certificate.erl | 113 |
1 files changed, 81 insertions, 32 deletions
diff --git a/lib/ssl/src/ssl_certificate.erl b/lib/ssl/src/ssl_certificate.erl index b186a1015a..9c0ed181fe 100644 --- a/lib/ssl/src/ssl_certificate.erl +++ b/lib/ssl/src/ssl_certificate.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2007-2013. All Rights Reserved. +%% Copyright Ericsson AB 2007-2014 All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -30,7 +30,7 @@ -include("ssl_internal.hrl"). -include_lib("public_key/include/public_key.hrl"). --export([trusted_cert_and_path/3, +-export([trusted_cert_and_path/4, certificate_chain/3, file_to_certificats/2, validate_extension/3, @@ -46,14 +46,14 @@ %%==================================================================== %%-------------------------------------------------------------------- --spec trusted_cert_and_path([der_cert()], db_handle(), certdb_ref()) -> +-spec trusted_cert_and_path([der_cert()], db_handle(), certdb_ref(), fun()) -> {der_cert() | unknown_ca, [der_cert()]}. %% %% Description: Extracts the root cert (if not presents tries to %% look it up, if not found {bad_cert, unknown_ca} will be added verification %% errors. Returns {RootCert, Path, VerifyErrors} %%-------------------------------------------------------------------- -trusted_cert_and_path(CertChain, CertDbHandle, CertDbRef) -> +trusted_cert_and_path(CertChain, CertDbHandle, CertDbRef, PartialChainHandler) -> Path = [Cert | _] = lists:reverse(CertChain), OtpCert = public_key:pkix_decode_cert(Cert, otp), SignedAndIssuerID = @@ -62,32 +62,23 @@ trusted_cert_and_path(CertChain, CertDbHandle, CertDbRef) -> {ok, IssuerId} = public_key:pkix_issuer_id(OtpCert, self), {self, IssuerId}; false -> - case public_key:pkix_issuer_id(OtpCert, other) of - {ok, IssuerId} -> - {other, IssuerId}; - {error, issuer_not_found} -> - case find_issuer(OtpCert, CertDbHandle) of - {ok, IssuerId} -> - {other, IssuerId}; - Other -> - Other - end - end + other_issuer(OtpCert, CertDbHandle) end, case SignedAndIssuerID of {error, issuer_not_found} -> %% The root CA was not sent and can not be found. - {unknown_ca, Path}; + handle_incomplete_chain(Path, PartialChainHandler); {self, _} when length(Path) == 1 -> {selfsigned_peer, Path}; {_ ,{SerialNr, Issuer}} -> case ssl_manager:lookup_trusted_cert(CertDbHandle, CertDbRef, SerialNr, Issuer) of - {ok, {BinCert,_}} -> - {BinCert, Path}; + {ok, Trusted} -> + %% Trusted must be selfsigned or it is an incomplete chain + handle_path(Trusted, Path, PartialChainHandler); _ -> %% Root CA could not be verified - {unknown_ca, Path} + handle_incomplete_chain(Path, PartialChainHandler) end end. @@ -222,23 +213,27 @@ certificate_chain(CertDbHandle, CertsDbRef, Chain, SerialNr, Issuer, _SelfSigned _ -> %% The trusted cert may be obmitted from the chain as the %% counter part needs to have it anyway to be able to - %% verify it. This will be the normal case for servers - %% that does not verify the clients and hence have not - %% specified the cacertfile. + %% verify it. {ok, lists:reverse(Chain)} end. find_issuer(OtpCert, CertDbHandle) -> - IsIssuerFun = fun({_Key, {_Der, #'OTPCertificate'{} = ErlCertCandidate}}, Acc) -> - case public_key:pkix_is_issuer(OtpCert, ErlCertCandidate) of - true -> - throw(public_key:pkix_issuer_id(ErlCertCandidate, self)); - false -> - Acc - end; - (_, Acc) -> - Acc - end, + IsIssuerFun = + fun({_Key, {_Der, #'OTPCertificate'{} = ErlCertCandidate}}, Acc) -> + case public_key:pkix_is_issuer(OtpCert, ErlCertCandidate) of + true -> + case verify_cert_signer(OtpCert, ErlCertCandidate#'OTPCertificate'.tbsCertificate) of + true -> + throw(public_key:pkix_issuer_id(ErlCertCandidate, self)); + false -> + Acc + end; + false -> + Acc + end; + (_, Acc) -> + Acc + end, try ssl_pkix_db:foldl(IsIssuerFun, issuer_not_found, CertDbHandle) of issuer_not_found -> @@ -254,3 +249,57 @@ is_valid_extkey_usage(KeyUse, client) -> is_valid_extkey_usage(KeyUse, server) -> %% Server wants to verify client is_valid_key_usage(KeyUse, ?'id-kp-clientAuth'). + +verify_cert_signer(OtpCert, SignerTBSCert) -> + PublicKey = public_key(SignerTBSCert#'OTPTBSCertificate'.subjectPublicKeyInfo), + public_key:pkix_verify(public_key:pkix_encode('OTPCertificate', OtpCert, otp), PublicKey). + +public_key(#'OTPSubjectPublicKeyInfo'{algorithm = #'PublicKeyAlgorithm'{algorithm = ?'id-ecPublicKey', + parameters = Params}, + subjectPublicKey = Point}) -> + {Point, Params}; +public_key(#'OTPSubjectPublicKeyInfo'{algorithm = #'PublicKeyAlgorithm'{algorithm = ?'rsaEncryption'}, + subjectPublicKey = Key}) -> + Key; +public_key(#'OTPSubjectPublicKeyInfo'{algorithm = #'PublicKeyAlgorithm'{algorithm = ?'id-dsa', + parameters = {params, Params}}, + subjectPublicKey = Key}) -> + {Key, Params}. + +other_issuer(OtpCert, CertDbHandle) -> + case public_key:pkix_issuer_id(OtpCert, other) of + {ok, IssuerId} -> + {other, IssuerId}; + {error, issuer_not_found} -> + case find_issuer(OtpCert, CertDbHandle) of + {ok, IssuerId} -> + {other, IssuerId}; + Other -> + Other + end + end. + +handle_path({BinCert, OTPCert}, Path, PartialChainHandler) -> + case public_key:pkix_is_self_signed(OTPCert) of + true -> + {BinCert, Path}; + false -> + handle_incomplete_chain(Path, PartialChainHandler) + end. + +handle_incomplete_chain(Chain, Fun) -> + case catch Fun(Chain) of + {trusted_ca, DerCert} -> + new_trusteded_chain(DerCert, Chain); + unknown_ca = Error -> + {Error, Chain}; + _ -> + {unknown_ca, Chain} + end. + +new_trusteded_chain(DerCert, [DerCert | Chain]) -> + {DerCert, Chain}; +new_trusteded_chain(DerCert, [_ | Rest]) -> + new_trusteded_chain(DerCert, Rest); +new_trusteded_chain(_, []) -> + unknown_ca. |