1 // Copyright 2015 The Chromium Authors 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef BSSL_PKI_EXTENDED_KEY_USAGE_H_ 6 #define BSSL_PKI_EXTENDED_KEY_USAGE_H_ 7 8 #include "fillins/openssl_util.h" 9 #include <vector> 10 11 12 #include "input.h" 13 14 namespace bssl { 15 16 // The arc for the anyExtendedKeyUsage OID is found under the id-ce arc, 17 // defined in section 4.2.1 of RFC 5280: 18 // id-ce OBJECT IDENTIFIER ::= { joint-iso-ccitt(2) ds(5) 29 } 19 // 20 // From RFC 5280 section 4.2.1.12: 21 // id-ce-extKeyUsage OBJECT IDENTIFIER ::= { id-ce 37 } 22 // anyExtendedKeyUsage OBJECT IDENTIFIER ::= { id-ce-extKeyUsage 0 } 23 // In dotted notation: 2.5.29.37.0 24 inline constexpr uint8_t kAnyEKU[] = {0x55, 0x1d, 0x25, 0x00}; 25 26 // All other key usage purposes defined in RFC 5280 are found in the id-kp 27 // arc, defined in section 4.2.1.12 as: 28 // id-kp OBJECT IDENTIFIER ::= { id-pkix 3 } 29 // 30 // With id-pkix defined in RFC 5280 section 4.2.2 as: 31 // id-pkix OBJECT IDENTIFIER ::= 32 // { iso(1) identified-organization(3) dod(6) internet(1) 33 // security(5) mechanisms(5) pkix(7) } 34 // 35 // From RFC 5280 section 4.2.1.12: 36 // id-kp-serverAuth OBJECT IDENTIFIER ::= { id-kp 1 } 37 // In dotted notation: 1.3.6.1.5.5.7.3.1 38 inline constexpr uint8_t kServerAuth[] = {0x2b, 0x06, 0x01, 0x05, 39 0x05, 0x07, 0x03, 0x01}; 40 41 // From RFC 5280 section 4.2.1.12: 42 // id-kp-clientAuth OBJECT IDENTIFIER ::= { id-kp 2 } 43 // In dotted notation: 1.3.6.1.5.5.7.3.2 44 inline constexpr uint8_t kClientAuth[] = {0x2b, 0x06, 0x01, 0x05, 45 0x05, 0x07, 0x03, 0x02}; 46 47 // From RFC 5280 section 4.2.1.12: 48 // id-kp-codeSigning OBJECT IDENTIFIER ::= { id-kp 3 } 49 // In dotted notation: 1.3.6.1.5.5.7.3.3 50 inline constexpr uint8_t kCodeSigning[] = {0x2b, 0x06, 0x01, 0x05, 51 0x05, 0x07, 0x03, 0x03}; 52 53 // From RFC 5280 section 4.2.1.12: 54 // id-kp-emailProtection OBJECT IDENTIFIER ::= { id-kp 4 } 55 // In dotted notation: 1.3.6.1.5.5.7.3.4 56 inline constexpr uint8_t kEmailProtection[] = {0x2b, 0x06, 0x01, 0x05, 57 0x05, 0x07, 0x03, 0x04}; 58 59 // From RFC 5280 section 4.2.1.12: 60 // id-kp-timeStamping OBJECT IDENTIFIER ::= { id-kp 8 } 61 // In dotted notation: 1.3.6.1.5.5.7.3.8 62 inline constexpr uint8_t kTimeStamping[] = {0x2b, 0x06, 0x01, 0x05, 63 0x05, 0x07, 0x03, 0x08}; 64 65 // From RFC 5280 section 4.2.1.12: 66 // id-kp-OCSPSigning OBJECT IDENTIFIER ::= { id-kp 9 } 67 // In dotted notation: 1.3.6.1.5.5.7.3.9 68 inline constexpr uint8_t kOCSPSigning[] = {0x2b, 0x06, 0x01, 0x05, 69 0x05, 0x07, 0x03, 0x09}; 70 71 // Netscape Server Gated Crypto (2.16.840.1.113730.4.1) is a deprecated OID 72 // which in some situations is considered equivalent to the serverAuth key 73 // purpose. 74 inline constexpr uint8_t kNetscapeServerGatedCrypto[] = { 75 0x60, 0x86, 0x48, 0x01, 0x86, 0xf8, 0x42, 0x04, 0x01}; 76 77 // Parses |extension_value|, which contains the extnValue field of an X.509v3 78 // Extended Key Usage extension, and populates |eku_oids| with the list of 79 // DER-encoded OID values (that is, without tag and length). Returns false if 80 // |extension_value| is improperly encoded. 81 // 82 // Note: The returned OIDs are only as valid as long as the data pointed to by 83 // |extension_value| is valid. 84 OPENSSL_EXPORT bool ParseEKUExtension(const der::Input& extension_value, 85 std::vector<der::Input>* eku_oids); 86 87 } // namespace net 88 89 #endif // BSSL_PKI_EXTENDED_KEY_USAGE_H_ 90