431 lines
13 KiB
C
431 lines
13 KiB
C
/* asn.h
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*
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* Copyright (C) 2006-2012 Sawtooth Consulting Ltd.
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*
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* This file is part of CyaSSL.
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*
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* CyaSSL is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* CyaSSL is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#ifndef CTAO_CRYPT_ASN_H
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#define CTAO_CRYPT_ASN_H
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#include <cyassl/ctaocrypt/types.h>
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#include <cyassl/ctaocrypt/rsa.h>
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#include <cyassl/ctaocrypt/dh.h>
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#include <cyassl/ctaocrypt/dsa.h>
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#include <cyassl/ctaocrypt/sha.h>
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#include <cyassl/ctaocrypt/md5.h>
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#include <cyassl/ctaocrypt/asn_public.h> /* public interface */
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#ifdef HAVE_ECC
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#include <cyassl/ctaocrypt/ecc.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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enum {
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ISSUER = 0,
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SUBJECT = 1,
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EXTERNAL_SERIAL_SIZE = 32,
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BEFORE = 0,
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AFTER = 1
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};
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/* ASN Tags */
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enum ASN_Tags {
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ASN_BOOLEAN = 0x01,
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ASN_INTEGER = 0x02,
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ASN_BIT_STRING = 0x03,
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ASN_OCTET_STRING = 0x04,
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ASN_TAG_NULL = 0x05,
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ASN_OBJECT_ID = 0x06,
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ASN_ENUMERATED = 0x0a,
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ASN_SEQUENCE = 0x10,
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ASN_SET = 0x11,
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ASN_UTC_TIME = 0x17,
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ASN_GENERALIZED_TIME = 0x18,
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CRL_EXTENSIONS = 0xa0,
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ASN_EXTENSIONS = 0xa3,
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ASN_LONG_LENGTH = 0x80
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};
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enum ASN_Flags{
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ASN_CONSTRUCTED = 0x20,
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ASN_CONTEXT_SPECIFIC = 0x80
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};
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enum DN_Tags {
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ASN_COMMON_NAME = 0x03, /* CN */
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ASN_SUR_NAME = 0x04, /* SN */
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ASN_COUNTRY_NAME = 0x06, /* C */
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ASN_LOCALITY_NAME = 0x07, /* L */
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ASN_STATE_NAME = 0x08, /* ST */
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ASN_ORG_NAME = 0x0a, /* O */
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ASN_ORGUNIT_NAME = 0x0b /* OU */
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};
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enum PBES {
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PBE_MD5_DES = 0,
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PBE_SHA1_DES = 1,
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PBE_SHA1_DES3 = 2,
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PBE_SHA1_RC4_128 = 3,
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PBES2 = 13 /* algo ID */
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};
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enum ENCRYPTION_TYPES {
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DES_TYPE = 0,
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DES3_TYPE = 1,
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RC4_TYPE = 2
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};
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enum ECC_TYPES {
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ECC_PREFIX_0 = 160,
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ECC_PREFIX_1 = 161
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};
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enum Misc_ASN {
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ASN_NAME_MAX = 256,
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MAX_SALT_SIZE = 64, /* MAX PKCS Salt length */
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MAX_IV_SIZE = 64, /* MAX PKCS Iv length */
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MAX_KEY_SIZE = 64, /* MAX PKCS Key length */
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PKCS5 = 5, /* PKCS oid tag */
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PKCS5v2 = 6, /* PKCS #5 v2.0 */
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PKCS12 = 12, /* PKCS #12 */
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MAX_UNICODE_SZ = 256,
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ASN_BOOL_SIZE = 2, /* including type */
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SHA_SIZE = 20,
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RSA_INTS = 8, /* RSA ints in private key */
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MIN_DATE_SIZE = 13,
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MAX_DATE_SIZE = 32,
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ASN_GEN_TIME_SZ = 15, /* 7 numbers * 2 + Zulu tag */
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MAX_ENCODED_SIG_SZ = 512,
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MAX_SIG_SZ = 256,
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MAX_ALGO_SZ = 20,
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MAX_SEQ_SZ = 5, /* enum(seq | con) + length(4) */
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MAX_SET_SZ = 5, /* enum(set | con) + length(4) */
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MAX_VERSION_SZ = 5, /* enum + id + version(byte) + (header(2))*/
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MAX_ENCODED_DIG_SZ = 73, /* sha512 + enum(bit or octet) + legnth(4) */
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MAX_RSA_INT_SZ = 517, /* RSA raw sz 4096 for bits + tag + len(4) */
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MAX_NTRU_KEY_SZ = 610, /* NTRU 112 bit public key */
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MAX_NTRU_ENC_SZ = 628, /* NTRU 112 bit DER public encoding */
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MAX_LENGTH_SZ = 4, /* Max length size for DER encoding */
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MAX_RSA_E_SZ = 16, /* Max RSA public e size */
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MAX_CA_SZ = 32, /* Max encoded CA basic constraint length */
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MAX_SN_SZ = 35, /* Max encoded serial number (INT) length */
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#ifdef CYASSL_CERT_GEN
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#ifdef CYASSL_ALT_NAMES
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MAX_EXTENSIONS_SZ = 1 + MAX_LENGTH_SZ + CTC_MAX_ALT_SIZE,
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#else
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MAX_EXTENSIONS_SZ = 1 + MAX_LENGTH_SZ + MAX_CA_SZ,
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#endif
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/* Max total extensions, id + len + others */
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#endif
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MAX_PUBLIC_KEY_SZ = MAX_NTRU_ENC_SZ + MAX_ALGO_SZ + MAX_SEQ_SZ * 2
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/* use bigger NTRU size */
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};
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enum Oid_Types {
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hashType = 0,
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sigType = 1,
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keyType = 2
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};
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enum Hash_Sum {
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MD2h = 646,
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MD5h = 649,
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SHAh = 88,
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SHA256h = 414,
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SHA384h = 415,
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SHA512h = 416
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};
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enum Key_Sum {
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DSAk = 515,
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RSAk = 645,
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NTRUk = 364,
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ECDSAk = 518
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};
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enum Ecc_Sum {
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ECC_256R1 = 526,
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ECC_384R1 = 210,
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ECC_521R1 = 211,
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ECC_160R1 = 184,
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ECC_192R1 = 520,
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ECC_224R1 = 209
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};
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enum KDF_Sum {
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PBKDF2_OID = 660
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};
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enum Extensions_Sum {
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BASIC_CA_OID = 133,
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ALT_NAMES_OID = 131,
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CRL_DIST_OID = 145,
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AUTH_INFO_OID = 69,
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CA_ISSUER_OID = 117
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};
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enum VerifyType {
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NO_VERIFY = 0,
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VERIFY = 1
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};
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typedef struct DecodedCert DecodedCert;
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typedef struct Signer Signer;
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struct DecodedCert {
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byte* publicKey;
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word32 pubKeySize;
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int pubKeyStored;
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word32 certBegin; /* offset to start of cert */
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word32 sigIndex; /* offset to start of signature */
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word32 sigLength; /* length of signature */
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word32 signatureOID; /* sum of algorithm object id */
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word32 keyOID; /* sum of key algo object id */
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byte subjectHash[SHA_SIZE]; /* hash of all Names */
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byte issuerHash[SHA_SIZE]; /* hash of all Names */
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#ifdef HAVE_OCSP
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byte issuerKeyHash[SHA_SIZE]; /* hash of the public Key */
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#endif /* HAVE_OCSP */
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byte* signature; /* not owned, points into raw cert */
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char* subjectCN; /* CommonName */
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int subjectCNLen;
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char issuer[ASN_NAME_MAX]; /* full name including common name */
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char subject[ASN_NAME_MAX]; /* full name including common name */
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int verify; /* Default to yes, but could be off */
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byte* source; /* byte buffer holder cert, NOT owner */
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word32 srcIdx; /* current offset into buffer */
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word32 maxIdx; /* max offset based on init size */
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void* heap; /* for user memory overrides */
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byte serial[EXTERNAL_SERIAL_SIZE]; /* raw serial number */
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int serialSz; /* raw serial bytes stored */
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byte* extensions; /* not owned, points into raw cert */
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int extensionsSz; /* length of cert extensions */
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word32 extensionsIdx; /* if want to go back and parse later */
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byte* extAuthInfo; /* Authority Information Access URI */
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int extAuthInfoSz; /* length of the URI */
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byte* extCrlInfo; /* CRL Distribution Points */
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int extCrlInfoSz; /* length of the URI */
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byte isCA; /* CA basic constraint true */
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#ifdef CYASSL_CERT_GEN
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/* easy access to subject info for other sign */
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char* subjectSN;
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int subjectSNLen;
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char* subjectC;
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int subjectCLen;
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char* subjectL;
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int subjectLLen;
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char* subjectST;
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int subjectSTLen;
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char* subjectO;
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int subjectOLen;
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char* subjectOU;
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int subjectOULen;
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char* subjectEmail;
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int subjectEmailLen;
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byte* beforeDate;
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int beforeDateLen;
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byte* afterDate;
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int afterDateLen;
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#endif /* CYASSL_CERT_GEN */
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};
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/* CA Signers */
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struct Signer {
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byte* publicKey;
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word32 pubKeySize;
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word32 keyOID; /* key type */
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char* name; /* common name */
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byte hash[SHA_DIGEST_SIZE]; /* sha hash of names in certificate */
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Signer* next;
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};
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/* not for public consumption but may use for testing sometimes */
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#ifdef CYASSL_TEST_CERT
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#define CYASSL_TEST_API CYASSL_API
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#else
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#define CYASSL_TEST_API CYASSL_LOCAL
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#endif
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CYASSL_TEST_API void InitDecodedCert(DecodedCert*, byte*, word32, void*);
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CYASSL_TEST_API void FreeDecodedCert(DecodedCert*);
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CYASSL_TEST_API int ParseCert(DecodedCert*, int type, int verify, void* cm);
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CYASSL_LOCAL int ParseCertRelative(DecodedCert*, int type, int verify,void* cm);
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CYASSL_LOCAL int DecodeToKey(DecodedCert*, int verify);
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CYASSL_LOCAL word32 EncodeSignature(byte* out, const byte* digest, word32 digSz,
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int hashOID);
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CYASSL_LOCAL Signer* MakeSigner(void*);
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CYASSL_LOCAL void FreeSigners(Signer*, void*);
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CYASSL_LOCAL int ToTraditional(byte* buffer, word32 length);
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CYASSL_LOCAL int ToTraditionalEnc(byte* buffer, word32 length,const char*, int);
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#ifdef HAVE_ECC
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/* ASN sig helpers */
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CYASSL_LOCAL int StoreECC_DSA_Sig(byte* out, word32* outLen, mp_int* r,
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mp_int* s);
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CYASSL_LOCAL int DecodeECC_DSA_Sig(const byte* sig, word32 sigLen,
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mp_int* r, mp_int* s);
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/* private key helpers */
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CYASSL_LOCAL int EccPrivateKeyDecode(const byte* input,word32* inOutIdx,
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ecc_key*,word32);
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#endif
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#ifdef CYASSL_CERT_GEN
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enum cert_enums {
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NAME_ENTRIES = 8,
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JOINT_LEN = 2,
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EMAIL_JOINT_LEN = 9,
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RSA_KEY = 10,
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NTRU_KEY = 11
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};
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#endif /* CYASSL_CERT_GEN */
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#ifdef HAVE_OCSP
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enum Ocsp_Response_Status {
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OCSP_SUCCESSFUL = 0, /* Response has valid confirmations */
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OCSP_MALFORMED_REQUEST = 1, /* Illegal confirmation request */
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OCSP_INTERNAL_ERROR = 2, /* Internal error in issuer */
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OCSP_TRY_LATER = 3, /* Try again later */
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OCSP_SIG_REQUIRED = 5, /* Must sign the request (4 is skipped) */
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OCSP_UNAUTHROIZED = 6 /* Request unauthorized */
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};
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enum Ocsp_Cert_Status {
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CERT_GOOD = 0,
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CERT_REVOKED = 1,
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CERT_UNKNOWN = 2
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};
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enum Ocsp_Sums {
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OCSP_BASIC_OID = 117
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};
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#define STATUS_LIST_SIZE 5
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typedef struct OcspResponse OcspResponse;
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struct OcspResponse {
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int responseStatus; /* return code from Responder */
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word32 respBegin; /* index to beginning of OCSP Response */
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word32 respLength; /* length of the OCSP Response */
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int version; /* Response version number */
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word32 sigIndex; /* Index into source for start of sig */
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word32 sigLength; /* Length in octets for the sig */
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word32 sigOID; /* OID for hash used for sig */
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int certStatusCount; /* Count of certificate statuses, Note
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* 1:1 correspondence between certStatus
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* and certSerialNumber */
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byte certSN[STATUS_LIST_SIZE][EXTERNAL_SERIAL_SIZE];
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int certSNsz[STATUS_LIST_SIZE];
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/* Certificate serial number array. */
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word32 certStatus[STATUS_LIST_SIZE];
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/* Certificate status array */
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byte* source; /* pointer to source buffer, not owned */
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word32 maxIdx; /* max offset based on init size */
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void* heap; /* for user memory overrides */
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};
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CYASSL_LOCAL void InitOcspResponse(OcspResponse*, byte*, word32, void*);
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CYASSL_LOCAL void FreeOcspResponse(OcspResponse*);
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CYASSL_LOCAL int OcspResponseDecode(OcspResponse*);
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CYASSL_LOCAL int EncodeOcspRequest(DecodedCert*, byte*, word32);
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#endif /* HAVE_OCSP */
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/* for pointer use */
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typedef struct RevokedCert RevokedCert;
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#ifdef HAVE_CRL
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struct RevokedCert {
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byte serialNumber[EXTERNAL_SERIAL_SIZE];
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int serialSz;
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RevokedCert* next;
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};
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typedef struct DecodedCRL DecodedCRL;
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struct DecodedCRL {
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word32 certBegin; /* offset to start of cert */
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word32 sigIndex; /* offset to start of signature */
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word32 sigLength; /* length of signature */
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word32 signatureOID; /* sum of algorithm object id */
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byte* signature; /* pointer into raw source, not owned */
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byte issuerHash[SHA_DIGEST_SIZE]; /* issuer hash */
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byte crlHash[MD5_DIGEST_SIZE]; /* raw crl data hash */
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byte lastDate[MAX_DATE_SIZE]; /* last date updated */
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byte nextDate[MAX_DATE_SIZE]; /* next update date */
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RevokedCert* certs; /* revoked cert list */
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int totalCerts; /* number on list */
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};
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CYASSL_LOCAL void InitDecodedCRL(DecodedCRL*);
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CYASSL_LOCAL int ParseCRL(DecodedCRL*, const byte* buff, long sz);
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CYASSL_LOCAL void FreeDecodedCRL(DecodedCRL*);
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#endif /* HAVE_CRL */
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* CTAO_CRYPT_ASN_H */
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