wolfSSL SSL/TLS library, support up to TLS1.3

Dependents:   CyaSSL-Twitter-OAuth4Tw Example-client-tls-cert TwitterReader TweetTest ... more

Revision:
13:f67a6c6013ca
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wolfssl/wolfcrypt/asn.h	Tue Aug 22 10:48:22 2017 +0000
@@ -0,0 +1,1006 @@
+/* asn.h
+ *
+ * Copyright (C) 2006-2016 wolfSSL Inc.
+ *
+ * This file is part of wolfSSL.
+ *
+ * wolfSSL is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * wolfSSL is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
+ */
+
+
+#ifndef WOLF_CRYPT_ASN_H
+#define WOLF_CRYPT_ASN_H
+
+#include <wolfssl/wolfcrypt/types.h>
+
+#ifndef NO_ASN
+
+#include <wolfssl/wolfcrypt/integer.h>
+
+/* fips declare of RsaPrivateKeyDecode @wc_fips */
+#if defined(HAVE_FIPS) && !defined(NO_RSA)
+    #include <cyassl/ctaocrypt/rsa.h>
+#endif
+
+#ifndef NO_DH
+    #include <wolfssl/wolfcrypt/dh.h>
+#endif
+#ifndef NO_DSA
+    #include <wolfssl/wolfcrypt/dsa.h>
+#endif
+#ifndef NO_SHA
+    #include <wolfssl/wolfcrypt/sha.h>
+#endif
+#ifndef NO_MD5
+    #include <wolfssl/wolfcrypt/md5.h>
+#endif
+#include <wolfssl/wolfcrypt/sha256.h>
+#include <wolfssl/wolfcrypt/asn_public.h>   /* public interface */
+
+
+#ifdef __cplusplus
+    extern "C" {
+#endif
+
+enum {
+    ISSUER  = 0,
+    SUBJECT = 1,
+
+    EXTERNAL_SERIAL_SIZE = 32,
+
+    BEFORE  = 0,
+    AFTER   = 1
+};
+
+/* ASN Tags   */
+enum ASN_Tags {
+    ASN_BOOLEAN           = 0x01,
+    ASN_INTEGER           = 0x02,
+    ASN_BIT_STRING        = 0x03,
+    ASN_OCTET_STRING      = 0x04,
+    ASN_TAG_NULL          = 0x05,
+    ASN_OBJECT_ID         = 0x06,
+    ASN_ENUMERATED        = 0x0a,
+    ASN_UTF8STRING        = 0x0c,
+    ASN_SEQUENCE          = 0x10,
+    ASN_SET               = 0x11,
+    ASN_UTC_TIME          = 0x17,
+    ASN_OTHER_TYPE        = 0x00,
+    ASN_RFC822_TYPE       = 0x01,
+    ASN_DNS_TYPE          = 0x02,
+    ASN_DIR_TYPE          = 0x04,
+    ASN_GENERALIZED_TIME  = 0x18,
+    CRL_EXTENSIONS        = 0xa0,
+    ASN_EXTENSIONS        = 0xa3,
+    ASN_LONG_LENGTH       = 0x80
+};
+
+enum ASN_Flags {
+    ASN_CONSTRUCTED       = 0x20,
+    ASN_CONTEXT_SPECIFIC  = 0x80
+};
+
+enum DN_Tags {
+    ASN_COMMON_NAME   = 0x03,   /* CN */
+    ASN_SUR_NAME      = 0x04,   /* SN */
+    ASN_SERIAL_NUMBER = 0x05,   /* serialNumber */
+    ASN_COUNTRY_NAME  = 0x06,   /* C  */
+    ASN_LOCALITY_NAME = 0x07,   /* L  */
+    ASN_STATE_NAME    = 0x08,   /* ST */
+    ASN_ORG_NAME      = 0x0a,   /* O  */
+    ASN_ORGUNIT_NAME  = 0x0b    /* OU */
+};
+
+enum PBES {
+    PBE_MD5_DES      = 0,
+    PBE_SHA1_DES     = 1,
+    PBE_SHA1_DES3    = 2,
+    PBE_SHA1_RC4_128 = 3,
+    PBES2            = 13       /* algo ID */
+};
+
+enum ENCRYPTION_TYPES {
+    DES_TYPE  = 0,
+    DES3_TYPE = 1,
+    RC4_TYPE  = 2
+};
+
+enum ECC_TYPES {
+    ECC_PREFIX_0 = 160,
+    ECC_PREFIX_1 = 161
+};
+
+enum Misc_ASN {
+    ASN_NAME_MAX        = 256,
+    MAX_SALT_SIZE       =  64,     /* MAX PKCS Salt length */
+    MAX_IV_SIZE         =  64,     /* MAX PKCS Iv length */
+    MAX_KEY_SIZE        =  64,     /* MAX PKCS Key  length */
+    PKCS5               =   5,     /* PKCS oid tag */
+    PKCS5v2             =   6,     /* PKCS #5 v2.0 */
+    PKCS8v0             =   0,     /* default PKCS#8 version */
+    PKCS12v1            =  12,     /* PKCS #12 */
+    MAX_UNICODE_SZ      = 256,
+    ASN_BOOL_SIZE       =   2,     /* including type */
+    ASN_ECC_HEADER_SZ   =   2,     /* String type + 1 byte len */
+    ASN_ECC_CONTEXT_SZ  =   2,     /* Content specific type + 1 byte len */
+#ifdef NO_SHA
+    KEYID_SIZE          = SHA256_DIGEST_SIZE,
+#else
+    KEYID_SIZE          = SHA_DIGEST_SIZE,
+#endif
+    RSA_INTS            =   8,     /* RSA ints in private key */
+    DSA_INTS            =   5,     /* DSA ints in private key */
+    MIN_DATE_SIZE       =  13,
+    MAX_DATE_SIZE       =  32,
+    ASN_GEN_TIME_SZ     =  15,     /* 7 numbers * 2 + Zulu tag */
+    MAX_ENCODED_SIG_SZ  = 512,
+    MAX_SIG_SZ          = 256,
+    MAX_ALGO_SZ         =  20,
+    MAX_SEQ_SZ          =   5,     /* enum(seq | con) + length(4) */
+    MAX_SET_SZ          =   5,     /* enum(set | con) + length(4) */
+    MAX_OCTET_STR_SZ    =   5,     /* enum(set | con) + length(4) */
+    MAX_EXP_SZ          =   5,     /* enum(contextspec|con|exp) + length(4) */
+    MAX_PRSTR_SZ        =   5,     /* enum(prstr) + length(4) */
+    MAX_VERSION_SZ      =   5,     /* enum + id + version(byte) + (header(2))*/
+    MAX_ENCODED_DIG_SZ  =  73,     /* sha512 + enum(bit or octet) + length(4) */
+    MAX_RSA_INT_SZ      = 517,     /* RSA raw sz 4096 for bits + tag + len(4) */
+    MAX_NTRU_KEY_SZ     = 610,     /* NTRU 112 bit public key */
+    MAX_NTRU_ENC_SZ     = 628,     /* NTRU 112 bit DER public encoding */
+    MAX_LENGTH_SZ       =   4,     /* Max length size for DER encoding */
+    MAX_RSA_E_SZ        =  16,     /* Max RSA public e size */
+    MAX_CA_SZ           =  32,     /* Max encoded CA basic constraint length */
+    MAX_SN_SZ           =  35,     /* Max encoded serial number (INT) length */
+    MAX_DER_DIGEST_SZ   = MAX_ENCODED_DIG_SZ + MAX_ALGO_SZ + MAX_SEQ_SZ, /* Maximum DER digest size */
+#ifdef WOLFSSL_CERT_GEN
+    #ifdef WOLFSSL_CERT_REQ
+                          /* Max encoded cert req attributes length */
+        MAX_ATTRIB_SZ   = MAX_SEQ_SZ * 3 + (11 + MAX_SEQ_SZ) * 2 +
+                          MAX_PRSTR_SZ + CTC_NAME_SIZE, /* 11 is the OID size */
+    #endif
+    #if defined(WOLFSSL_ALT_NAMES) || defined(WOLFSSL_CERT_EXT)
+        MAX_EXTENSIONS_SZ   = 1 + MAX_LENGTH_SZ + CTC_MAX_ALT_SIZE,
+    #else
+        MAX_EXTENSIONS_SZ   = 1 + MAX_LENGTH_SZ + MAX_CA_SZ,
+    #endif
+                                   /* Max total extensions, id + len + others */
+#endif
+#ifdef WOLFSSL_CERT_EXT
+    MAX_KID_SZ			= 45,	   /* Max encoded KID length (SHA-256 case) */
+    MAX_KEYUSAGE_SZ     = 18,      /* Max encoded Key Usage length */
+    MAX_OID_SZ          = 32,      /* Max DER length of OID*/
+    MAX_OID_STRING_SZ   = 64,      /* Max string length representation of OID*/
+    MAX_CERTPOL_NB      = CTC_MAX_CERTPOL_NB,/* Max number of Cert Policy */
+    MAX_CERTPOL_SZ      = CTC_MAX_CERTPOL_SZ,
+#endif
+    OCSP_NONCE_EXT_SZ   = 35,      /* OCSP Nonce Extension size */
+    MAX_OCSP_EXT_SZ     = 58,      /* Max OCSP Extension length */
+    MAX_OCSP_NONCE_SZ   = 16,      /* OCSP Nonce size           */
+    EIGHTK_BUF          = 8192,    /* Tmp buffer size           */
+    MAX_PUBLIC_KEY_SZ   = MAX_NTRU_ENC_SZ + MAX_ALGO_SZ + MAX_SEQ_SZ * 2,
+                                   /* use bigger NTRU size */
+    HEADER_ENCRYPTED_KEY_SIZE = 88,/* Extra header size for encrypted key */
+    TRAILING_ZERO       = 1,       /* Used for size of zero pad */
+    MIN_VERSION_SZ      = 3,       /* Min bytes needed for GetMyVersion */
+#if defined(WOLFSSL_MYSQL_COMPATIBLE) || defined(WOLFSSL_NGINX) || defined(WOLFSSL_HAPROXY)
+    MAX_TIME_STRING_SZ  = 21,      /* Max length of formatted time string */
+#endif
+};
+
+
+enum Oid_Types {
+    oidHashType         = 0,
+    oidSigType          = 1,
+    oidKeyType          = 2,
+    oidCurveType        = 3,
+    oidBlkType          = 4,
+    oidOcspType         = 5,
+    oidCertExtType      = 6,
+    oidCertAuthInfoType = 7,
+    oidCertPolicyType   = 8,
+    oidCertAltNameType  = 9,
+    oidCertKeyUseType   = 10,
+    oidKdfType          = 11,
+    oidKeyWrapType      = 12,
+    oidCmsKeyAgreeType  = 13,
+    oidIgnoreType
+};
+
+
+enum Hash_Sum  {
+    MD2h    = 646,
+    MD5h    = 649,
+    SHAh    =  88,
+    SHA224h = 417,
+    SHA256h = 414,
+    SHA384h = 415,
+    SHA512h = 416
+};
+
+
+enum Block_Sum {
+    AES128CBCb = 414,
+    AES192CBCb = 434,
+    AES256CBCb = 454,
+    DESb       = 69,
+    DES3b      = 652
+};
+
+
+enum Key_Sum {
+    DSAk     = 515,
+    RSAk     = 645,
+    NTRUk    = 274,
+    ECDSAk   = 518,
+    ED25519k = 256
+};
+
+
+enum KeyWrap_Sum {
+    AES128_WRAP = 417,
+    AES192_WRAP = 437,
+    AES256_WRAP = 457
+};
+
+
+enum Key_Agree {
+    dhSinglePass_stdDH_sha1kdf_scheme   = 464,
+    dhSinglePass_stdDH_sha224kdf_scheme = 188,
+    dhSinglePass_stdDH_sha256kdf_scheme = 189,
+    dhSinglePass_stdDH_sha384kdf_scheme = 190,
+    dhSinglePass_stdDH_sha512kdf_scheme = 191,
+};
+
+
+enum Ecc_Sum {
+    ECC_SECP112R1_OID = 182,
+    ECC_SECP112R2_OID = 183,
+    ECC_SECP128R1_OID = 204,
+    ECC_SECP128R2_OID = 205,
+    ECC_SECP160R1_OID = 184,
+    ECC_SECP160R2_OID = 206,
+    ECC_SECP160K1_OID = 185,
+    ECC_BRAINPOOLP160R1_OID = 98,
+    ECC_SECP192R1_OID = 520,
+    ECC_PRIME192V2_OID = 521,
+    ECC_PRIME192V3_OID = 522,
+    ECC_SECP192K1_OID = 207,
+    ECC_BRAINPOOLP192R1_OID = 100,
+    ECC_SECP224R1_OID = 209,
+    ECC_SECP224K1_OID = 208,
+    ECC_BRAINPOOLP224R1_OID = 102,
+    ECC_PRIME239V1_OID = 523,
+    ECC_PRIME239V2_OID = 524,
+    ECC_PRIME239V3_OID = 525,
+    ECC_SECP256R1_OID = 526,
+    ECC_SECP256K1_OID = 186,
+    ECC_BRAINPOOLP256R1_OID = 104,
+    ECC_X25519_OID = 365,
+    ECC_ED25519_OID = 256,
+    ECC_BRAINPOOLP320R1_OID = 106,
+    ECC_SECP384R1_OID = 210,
+    ECC_BRAINPOOLP384R1_OID = 108,
+    ECC_BRAINPOOLP512R1_OID = 110,
+    ECC_SECP521R1_OID = 211,
+};
+
+
+enum KDF_Sum {
+    PBKDF2_OID = 660
+};
+
+
+enum Extensions_Sum {
+    BASIC_CA_OID    = 133,
+    ALT_NAMES_OID   = 131,
+    CRL_DIST_OID    = 145,
+    AUTH_INFO_OID   = 69, /* id-pe 1 */
+    AUTH_KEY_OID    = 149,
+    SUBJ_KEY_OID    = 128,
+    CERT_POLICY_OID = 146,
+    KEY_USAGE_OID   = 129,  /* 2.5.29.15 */
+    INHIBIT_ANY_OID = 168,  /* 2.5.29.54 */
+    EXT_KEY_USAGE_OID         = 151, /* 2.5.29.37 */
+    NAME_CONS_OID             = 144, /* 2.5.29.30 */
+    PRIV_KEY_USAGE_PERIOD_OID = 130, /* 2.5.29.16 */
+    SUBJECT_INFO_ACCESS       = 79,  /* id-pe 11 */
+    POLICY_MAP_OID            = 147,
+    POLICY_CONST_OID          = 150,
+    ISSUE_ALT_NAMES_OID       = 132,
+    TLS_FEATURE_OID           = 92   /* id-pe 24 */
+};
+
+enum CertificatePolicy_Sum {
+    CP_ANY_OID      = 146  /* id-ce 32 0 */
+};
+
+enum SepHardwareName_Sum {
+    HW_NAME_OID     = 79   /* 1.3.6.1.5.5.7.8.4 from RFC 4108*/
+};
+
+enum AuthInfo_Sum {
+    AIA_OCSP_OID      = 116, /* 1.3.6.1.5.5.7.48.1 */
+    AIA_CA_ISSUER_OID = 117  /* 1.3.6.1.5.5.7.48.2 */
+};
+
+enum ExtKeyUsage_Sum { /* From RFC 5280 */
+    EKU_ANY_OID         = 151, /* 2.5.29.37.0, anyExtendedKeyUsage         */
+    EKU_SERVER_AUTH_OID = 71,  /* 1.3.6.1.5.5.7.3.1, id-kp-serverAuth      */
+    EKU_CLIENT_AUTH_OID = 72,  /* 1.3.6.1.5.5.7.3.2, id-kp-clientAuth      */
+    EKU_OCSP_SIGN_OID   = 79   /* 1.3.6.1.5.5.7.3.9, OCSPSigning           */
+};
+
+
+enum VerifyType {
+    NO_VERIFY   = 0,
+    VERIFY      = 1,
+    VERIFY_CRL  = 2,
+    VERIFY_OCSP = 3
+};
+
+#ifdef WOLFSSL_CERT_EXT
+enum KeyIdType {
+    SKID_TYPE = 0,
+    AKID_TYPE = 1
+};
+#endif
+
+/* Key usage extension bits */
+#define KEYUSE_DIGITAL_SIG    0x0080
+#define KEYUSE_CONTENT_COMMIT 0x0040
+#define KEYUSE_KEY_ENCIPHER   0x0020
+#define KEYUSE_DATA_ENCIPHER  0x0010
+#define KEYUSE_KEY_AGREE      0x0008
+#define KEYUSE_KEY_CERT_SIGN  0x0004
+#define KEYUSE_CRL_SIGN       0x0002
+#define KEYUSE_ENCIPHER_ONLY  0x0001
+#define KEYUSE_DECIPHER_ONLY  0x8000
+
+#define EXTKEYUSE_ANY         0x08
+#define EXTKEYUSE_OCSP_SIGN   0x04
+#define EXTKEYUSE_CLIENT_AUTH 0x02
+#define EXTKEYUSE_SERVER_AUTH 0x01
+
+typedef struct DNS_entry   DNS_entry;
+
+struct DNS_entry {
+    DNS_entry* next;   /* next on DNS list */
+    char*      name;   /* actual DNS name */
+};
+
+
+typedef struct Base_entry  Base_entry;
+
+struct Base_entry {
+    Base_entry* next;   /* next on name base list */
+    char*       name;   /* actual name base */
+    int         nameSz; /* name length */
+    byte        type;   /* Name base type (DNS or RFC822) */
+};
+
+
+struct DecodedName {
+    char*   fullName;
+    int     fullNameLen;
+    int     entryCount;
+    int     cnIdx;
+    int     cnLen;
+    int     snIdx;
+    int     snLen;
+    int     cIdx;
+    int     cLen;
+    int     lIdx;
+    int     lLen;
+    int     stIdx;
+    int     stLen;
+    int     oIdx;
+    int     oLen;
+    int     ouIdx;
+    int     ouLen;
+    int     emailIdx;
+    int     emailLen;
+    int     uidIdx;
+    int     uidLen;
+    int     serialIdx;
+    int     serialLen;
+};
+
+enum SignatureState {
+    SIG_STATE_BEGIN,
+    SIG_STATE_HASH,
+    SIG_STATE_KEY,
+    SIG_STATE_DO,
+    SIG_STATE_CHECK,
+};
+
+struct SignatureCtx {
+    void* heap;
+    byte* digest;
+#ifndef NO_RSA
+    byte* out;
+    byte* plain;
+#endif
+#if defined(HAVE_ECC) || defined(HAVE_ED25519)
+    int verify;
+#endif
+    union {
+    #ifndef NO_RSA
+        struct RsaKey*      rsa;
+    #endif
+    #ifdef HAVE_ECC
+        struct ecc_key*     ecc;
+    #endif
+    #ifdef HAVE_ED25519
+        struct ed25519_key* ed25519;
+    #endif
+        void* ptr;
+    } key;
+    int devId;
+    int state;
+    int typeH;
+    int digestSz;
+    word32 keyOID;
+#ifdef WOLFSSL_ASYNC_CRYPT
+    WC_ASYNC_DEV* asyncDev;
+#endif
+};
+
+enum CertSignState {
+    CERTSIGN_STATE_BEGIN,
+    CERTSIGN_STATE_DIGEST,
+    CERTSIGN_STATE_ENCODE,
+    CERTSIGN_STATE_DO,
+};
+
+struct CertSignCtx {
+    byte* sig;
+    byte* digest;
+    #ifndef NO_RSA
+        byte* encSig;
+        int encSigSz;
+    #endif
+    int state; /* enum CertSignState */
+};
+
+
+typedef struct DecodedCert DecodedCert;
+typedef struct DecodedName DecodedName;
+typedef struct Signer      Signer;
+#ifdef WOLFSSL_TRUST_PEER_CERT
+typedef struct TrustedPeerCert TrustedPeerCert;
+#endif /* WOLFSSL_TRUST_PEER_CERT */
+typedef struct SignatureCtx SignatureCtx;
+typedef struct CertSignCtx  CertSignCtx;
+
+
+struct DecodedCert {
+    byte*   publicKey;
+    word32  pubKeySize;
+    int     pubKeyStored;
+    word32  certBegin;               /* offset to start of cert          */
+    word32  sigIndex;                /* offset to start of signature     */
+    word32  sigLength;               /* length of signature              */
+    word32  signatureOID;            /* sum of algorithm object id       */
+    word32  keyOID;                  /* sum of key algo  object id       */
+    int     version;                 /* cert version, 1 or 3             */
+    DNS_entry* altNames;             /* alt names list of dns entries    */
+#ifndef IGNORE_NAME_CONSTRAINTS
+    DNS_entry* altEmailNames;        /* alt names list of RFC822 entries */
+    Base_entry* permittedNames;      /* Permitted name bases             */
+    Base_entry* excludedNames;       /* Excluded name bases              */
+#endif /* IGNORE_NAME_CONSTRAINTS */
+    byte    subjectHash[KEYID_SIZE]; /* hash of all Names                */
+    byte    issuerHash[KEYID_SIZE];  /* hash of all Names                */
+#ifdef HAVE_OCSP
+    byte    issuerKeyHash[KEYID_SIZE]; /* hash of the public Key         */
+#endif /* HAVE_OCSP */
+    byte*   signature;               /* not owned, points into raw cert  */
+    char*   subjectCN;               /* CommonName                       */
+    int     subjectCNLen;            /* CommonName Length                */
+    char    subjectCNEnc;            /* CommonName Encoding              */
+    int     subjectCNStored;         /* have we saved a copy we own      */
+    char    issuer[ASN_NAME_MAX];    /* full name including common name  */
+    char    subject[ASN_NAME_MAX];   /* full name including common name  */
+    int     verify;                  /* Default to yes, but could be off */
+    byte*   source;                  /* byte buffer holder cert, NOT owner */
+    word32  srcIdx;                  /* current offset into buffer       */
+    word32  maxIdx;                  /* max offset based on init size    */
+    void*   heap;                    /* for user memory overrides        */
+    byte    serial[EXTERNAL_SERIAL_SIZE];  /* raw serial number          */
+    int     serialSz;                /* raw serial bytes stored */
+    byte*   extensions;              /* not owned, points into raw cert  */
+    int     extensionsSz;            /* length of cert extensions */
+    word32  extensionsIdx;           /* if want to go back and parse later */
+    byte*   extAuthInfo;             /* Authority Information Access URI */
+    int     extAuthInfoSz;           /* length of the URI                */
+    byte*   extCrlInfo;              /* CRL Distribution Points          */
+    int     extCrlInfoSz;            /* length of the URI                */
+    byte    extSubjKeyId[KEYID_SIZE]; /* Subject Key ID                  */
+    byte    extSubjKeyIdSet;         /* Set when the SKID was read from cert */
+    byte    extAuthKeyId[KEYID_SIZE]; /* Authority Key ID                */
+    byte    extAuthKeyIdSet;         /* Set when the AKID was read from cert */
+#ifndef IGNORE_NAME_CONSTRAINTS
+    byte    extNameConstraintSet;
+#endif /* IGNORE_NAME_CONSTRAINTS */
+    byte    isCA;                    /* CA basic constraint true         */
+    byte    pathLengthSet;           /* CA basic const path length set   */
+    byte    pathLength;              /* CA basic constraint path length  */
+    byte    weOwnAltNames;           /* altNames haven't been given to copy */
+    byte    extKeyUsageSet;
+    word16  extKeyUsage;             /* Key usage bitfield               */
+    byte    extExtKeyUsageSet;       /* Extended Key Usage               */
+    byte    extExtKeyUsage;          /* Extended Key usage bitfield      */
+#ifdef OPENSSL_EXTRA
+    byte    extCRLdistSet;
+    byte    extCRLdistCrit;
+    byte    extAuthInfoSet;
+    byte    extAuthInfoCrit;
+    byte    extBasicConstSet;
+    byte    extBasicConstCrit;
+    byte    extSubjAltNameSet;
+    byte    extSubjAltNameCrit;
+    byte    extAuthKeyIdCrit;
+#ifndef IGNORE_NAME_CONSTRAINTS
+    byte    extNameConstraintCrit;
+#endif /* IGNORE_NAME_CONSTRAINTS */
+    byte    extSubjKeyIdCrit;
+    byte    extKeyUsageCrit;
+    byte    extExtKeyUsageCrit;
+    byte*   extExtKeyUsageSrc;
+    word32  extExtKeyUsageSz;
+    word32  extExtKeyUsageCount;
+    byte*   extAuthKeyIdSrc;
+    word32  extAuthKeyIdSz;
+    byte*   extSubjKeyIdSrc;
+    word32  extSubjKeyIdSz;
+#endif
+#if defined(HAVE_ECC) || defined(HAVE_ED25519)
+    word32  pkCurveOID;           /* Public Key's curve OID */
+#endif /* HAVE_ECC */
+    byte*   beforeDate;
+    int     beforeDateLen;
+    byte*   afterDate;
+    int     afterDateLen;
+#ifdef HAVE_PKCS7
+    byte*   issuerRaw;               /* pointer to issuer inside source */
+    int     issuerRawLen;
+#endif
+#ifndef IGNORE_NAME_CONSTRAINT
+    byte*   subjectRaw;               /* pointer to subject inside source */
+    int     subjectRawLen;
+#endif
+#if defined(WOLFSSL_CERT_GEN)
+    /* easy access to subject info for other sign */
+    char*   subjectSN;
+    int     subjectSNLen;
+    char    subjectSNEnc;
+    char*   subjectC;
+    int     subjectCLen;
+    char    subjectCEnc;
+    char*   subjectL;
+    int     subjectLLen;
+    char    subjectLEnc;
+    char*   subjectST;
+    int     subjectSTLen;
+    char    subjectSTEnc;
+    char*   subjectO;
+    int     subjectOLen;
+    char    subjectOEnc;
+    char*   subjectOU;
+    int     subjectOULen;
+    char    subjectOUEnc;
+    char*   subjectEmail;
+    int     subjectEmailLen;
+#endif /* WOLFSSL_CERT_GEN */
+#ifdef OPENSSL_EXTRA
+    DecodedName issuerName;
+    DecodedName subjectName;
+#endif /* OPENSSL_EXTRA */
+#ifdef WOLFSSL_SEP
+    int     deviceTypeSz;
+    byte*   deviceType;
+    int     hwTypeSz;
+    byte*   hwType;
+    int     hwSerialNumSz;
+    byte*   hwSerialNum;
+    #ifdef OPENSSL_EXTRA
+        byte    extCertPolicySet;
+        byte    extCertPolicyCrit;
+    #endif /* OPENSSL_EXTRA */
+#endif /* WOLFSSL_SEP */
+#ifdef WOLFSSL_CERT_EXT
+    char    extCertPolicies[MAX_CERTPOL_NB][MAX_CERTPOL_SZ];
+    int     extCertPoliciesNb;
+#endif /* WOLFSSL_CERT_EXT */
+
+    Signer* ca;
+    SignatureCtx sigCtx;
+};
+
+
+struct WOLFSSL_ASN1_OBJECT {
+    void*  heap;
+    byte*  obj;
+    int    type; /* oid */
+    word32 objSz;
+    byte   dynamic; /* if 1 then obj was dynamiclly created, 0 otherwise */
+};
+
+
+extern const char* BEGIN_CERT;
+extern const char* END_CERT;
+extern const char* BEGIN_CERT_REQ;
+extern const char* END_CERT_REQ;
+extern const char* BEGIN_DSA_PARAM;
+extern const char* END_DSA_PARAM;
+extern const char* BEGIN_DH_PARAM;
+extern const char* END_DH_PARAM;
+extern const char* BEGIN_X509_CRL;
+extern const char* END_X509_CRL;
+extern const char* BEGIN_RSA_PRIV;
+extern const char* END_RSA_PRIV;
+extern const char* BEGIN_PRIV_KEY;
+extern const char* END_PRIV_KEY;
+extern const char* BEGIN_ENC_PRIV_KEY;
+extern const char* END_ENC_PRIV_KEY;
+extern const char* BEGIN_EC_PRIV;
+extern const char* END_EC_PRIV;
+extern const char* BEGIN_DSA_PRIV;
+extern const char* END_DSA_PRIV;
+extern const char* BEGIN_PUB_KEY;
+extern const char* END_PUB_KEY;
+extern const char* BEGIN_EDDSA_PRIV;
+extern const char* END_EDDSA_PRIV;
+
+#ifdef NO_SHA
+    #define SIGNER_DIGEST_SIZE SHA256_DIGEST_SIZE
+#else
+    #define SIGNER_DIGEST_SIZE SHA_DIGEST_SIZE
+#endif
+
+/* CA Signers */
+/* if change layout change PERSIST_CERT_CACHE functions too */
+struct Signer {
+    word32  pubKeySize;
+    word32  keyOID;                  /* key type */
+    word16  keyUsage;
+    byte    pathLength;
+    byte    pathLengthSet;
+    byte*   publicKey;
+    int     nameLen;
+    char*   name;                    /* common name */
+#ifndef IGNORE_NAME_CONSTRAINTS
+        Base_entry* permittedNames;
+        Base_entry* excludedNames;
+#endif /* IGNORE_NAME_CONSTRAINTS */
+    byte    subjectNameHash[SIGNER_DIGEST_SIZE];
+                                     /* sha hash of names in certificate */
+    #ifndef NO_SKID
+        byte    subjectKeyIdHash[SIGNER_DIGEST_SIZE];
+                                     /* sha hash of names in certificate */
+    #endif
+    Signer* next;
+};
+
+
+#ifdef WOLFSSL_TRUST_PEER_CERT
+/* used for having trusted peer certs rather then CA */
+struct TrustedPeerCert {
+    int     nameLen;
+    char*   name;                    /* common name */
+    #ifndef IGNORE_NAME_CONSTRAINTS
+        Base_entry* permittedNames;
+        Base_entry* excludedNames;
+    #endif /* IGNORE_NAME_CONSTRAINTS */
+    byte    subjectNameHash[SIGNER_DIGEST_SIZE];
+                                     /* sha hash of names in certificate */
+    #ifndef NO_SKID
+        byte    subjectKeyIdHash[SIGNER_DIGEST_SIZE];
+                                     /* sha hash of names in certificate */
+    #endif
+    word32 sigLen;
+    byte*  sig;
+    struct TrustedPeerCert* next;
+};
+#endif /* WOLFSSL_TRUST_PEER_CERT */
+
+
+/* for testing or custom openssl wrappers */
+#if defined(WOLFSSL_TEST_CERT) || defined(OPENSSL_EXTRA)
+    #define WOLFSSL_ASN_API WOLFSSL_API
+#else
+    #define WOLFSSL_ASN_API WOLFSSL_LOCAL
+#endif
+
+WOLFSSL_ASN_API void FreeAltNames(DNS_entry*, void*);
+#ifndef IGNORE_NAME_CONSTRAINTS
+    WOLFSSL_ASN_API void FreeNameSubtrees(Base_entry*, void*);
+#endif /* IGNORE_NAME_CONSTRAINTS */
+WOLFSSL_ASN_API void InitDecodedCert(DecodedCert*, byte*, word32, void*);
+WOLFSSL_ASN_API void FreeDecodedCert(DecodedCert*);
+WOLFSSL_ASN_API int  ParseCert(DecodedCert*, int type, int verify, void* cm);
+
+WOLFSSL_LOCAL int ParseCertRelative(DecodedCert*,int type,int verify,void* cm);
+WOLFSSL_LOCAL int DecodeToKey(DecodedCert*, int verify);
+
+WOLFSSL_LOCAL Signer* MakeSigner(void*);
+WOLFSSL_LOCAL void    FreeSigner(Signer*, void*);
+WOLFSSL_LOCAL void    FreeSignerTable(Signer**, int, void*);
+#ifdef WOLFSSL_TRUST_PEER_CERT
+WOLFSSL_LOCAL void    FreeTrustedPeer(TrustedPeerCert*, void*);
+WOLFSSL_LOCAL void    FreeTrustedPeerTable(TrustedPeerCert**, int, void*);
+#endif /* WOLFSSL_TRUST_PEER_CERT */
+
+WOLFSSL_ASN_API int ToTraditional(byte* buffer, word32 length);
+WOLFSSL_LOCAL int ToTraditionalInline(const byte* input, word32* inOutIdx,
+                                      word32 length);
+WOLFSSL_LOCAL int ToTraditionalEnc(byte* buffer, word32 length,const char*,int);
+WOLFSSL_LOCAL int DecryptContent(byte* input, word32 sz,const char* psw,int pswSz);
+WOLFSSL_LOCAL int wc_GetKeyOID(byte* key, word32 keySz, const byte** curveOID,
+        word32* oidSz, int* algoID, void* heap);
+
+typedef struct tm wolfssl_tm;
+#if defined(WOLFSSL_MYSQL_COMPATIBLE) || defined(WOLFSSL_NGINX) || defined(WOLFSSL_HAPROXY)
+WOLFSSL_LOCAL int GetTimeString(byte* date, int format, char* buf, int len);
+#endif
+WOLFSSL_LOCAL int ExtractDate(const unsigned char* date, unsigned char format,
+                                                 wolfssl_tm* certTime, int* idx);
+WOLFSSL_LOCAL int ValidateDate(const byte* date, byte format, int dateType);
+
+/* ASN.1 helper functions */
+#ifdef WOLFSSL_CERT_GEN
+WOLFSSL_ASN_API int SetName(byte* output, word32 outputSz, CertName* name);
+#endif
+WOLFSSL_LOCAL int GetShortInt(const byte* input, word32* inOutIdx, int* number,
+                              word32 maxIdx);
+WOLFSSL_LOCAL int GetLength(const byte* input, word32* inOutIdx, int* len,
+                           word32 maxIdx);
+WOLFSSL_LOCAL int GetSequence(const byte* input, word32* inOutIdx, int* len,
+                             word32 maxIdx);
+WOLFSSL_LOCAL int GetSet(const byte* input, word32* inOutIdx, int* len,
+                        word32 maxIdx);
+WOLFSSL_LOCAL int GetMyVersion(const byte* input, word32* inOutIdx,
+                              int* version, word32 maxIdx);
+WOLFSSL_LOCAL int GetInt(mp_int* mpi, const byte* input, word32* inOutIdx,
+                        word32 maxIdx);
+#ifdef HAVE_OID_ENCODING
+    WOLFSSL_LOCAL int EncodeObjectId(const word16* in, word32 inSz,
+        byte* out, word32* outSz);
+#endif
+#ifdef HAVE_OID_DECODING
+    WOLFSSL_LOCAL int DecodeObjectId(const byte* in, word32 inSz,
+        word16* out, word32* outSz);
+#endif
+WOLFSSL_LOCAL int GetObjectId(const byte* input, word32* inOutIdx, word32* oid,
+                              word32 oidType, word32 maxIdx);
+WOLFSSL_LOCAL int GetAlgoId(const byte* input, word32* inOutIdx, word32* oid,
+                           word32 oidType, word32 maxIdx);
+WOLFSSL_LOCAL word32 SetLength(word32 length, byte* output);
+WOLFSSL_LOCAL word32 SetSequence(word32 len, byte* output);
+WOLFSSL_LOCAL word32 SetOctetString(word32 len, byte* output);
+WOLFSSL_LOCAL word32 SetImplicit(byte tag,byte number,word32 len,byte* output);
+WOLFSSL_LOCAL word32 SetExplicit(byte number, word32 len, byte* output);
+WOLFSSL_LOCAL word32 SetSet(word32 len, byte* output);
+WOLFSSL_LOCAL word32 SetAlgoID(int algoOID,byte* output,int type,int curveSz);
+WOLFSSL_LOCAL int SetMyVersion(word32 version, byte* output, int header);
+WOLFSSL_LOCAL int SetSerialNumber(const byte* sn, word32 snSz, byte* output);
+WOLFSSL_LOCAL int GetSerialNumber(const byte* input, word32* inOutIdx,
+    byte* serial, int* serialSz, word32 maxIdx);
+WOLFSSL_LOCAL int GetNameHash(const byte* source, word32* idx, byte* hash,
+                             int maxIdx);
+WOLFSSL_LOCAL int wc_CheckPrivateKey(byte* key, word32 keySz, DecodedCert* der);
+
+#ifdef HAVE_ECC
+    /* ASN sig helpers */
+    WOLFSSL_LOCAL int StoreECC_DSA_Sig(byte* out, word32* outLen, mp_int* r,
+                                      mp_int* s);
+    WOLFSSL_LOCAL int DecodeECC_DSA_Sig(const byte* sig, word32 sigLen,
+                                       mp_int* r, mp_int* s);
+#endif
+
+WOLFSSL_LOCAL void InitSignatureCtx(SignatureCtx* sigCtx, void* heap, int devId);
+WOLFSSL_LOCAL void FreeSignatureCtx(SignatureCtx* sigCtx);
+
+
+#ifdef WOLFSSL_CERT_GEN
+
+enum cert_enums {
+    NAME_ENTRIES    =  8,
+    JOINT_LEN       =  2,
+    EMAIL_JOINT_LEN =  9,
+    RSA_KEY         = 10,
+    NTRU_KEY        = 11,
+    ECC_KEY         = 12,
+    ED25519_KEY     = 13
+};
+
+#ifndef WOLFSSL_PEMCERT_TODER_DEFINED
+#ifndef NO_FILESYSTEM
+/* forward from wolfSSL */
+WOLFSSL_API
+int wolfSSL_PemCertToDer(const char* fileName,unsigned char* derBuf,int derSz);
+#define WOLFSSL_PEMCERT_TODER_DEFINED
+#endif
+#endif
+
+#endif /* WOLFSSL_CERT_GEN */
+
+
+
+/* for pointer use */
+typedef struct CertStatus CertStatus;
+
+#ifdef HAVE_OCSP
+
+enum Ocsp_Response_Status {
+    OCSP_SUCCESSFUL        = 0, /* Response has valid confirmations */
+    OCSP_MALFORMED_REQUEST = 1, /* Illegal confirmation request */
+    OCSP_INTERNAL_ERROR    = 2, /* Internal error in issuer */
+    OCSP_TRY_LATER         = 3, /* Try again later */
+    OCSP_SIG_REQUIRED      = 5, /* Must sign the request (4 is skipped) */
+    OCSP_UNAUTHROIZED      = 6  /* Request unauthorized */
+};
+
+
+enum Ocsp_Cert_Status {
+    CERT_GOOD    = 0,
+    CERT_REVOKED = 1,
+    CERT_UNKNOWN = 2
+};
+
+
+enum Ocsp_Sums {
+    OCSP_BASIC_OID = 117,
+    OCSP_NONCE_OID = 118
+};
+
+
+typedef struct OcspRequest  OcspRequest;
+typedef struct OcspResponse OcspResponse;
+
+
+struct CertStatus {
+    CertStatus* next;
+
+    byte serial[EXTERNAL_SERIAL_SIZE];
+    int serialSz;
+
+    int status;
+
+    byte thisDate[MAX_DATE_SIZE];
+    byte nextDate[MAX_DATE_SIZE];
+    byte thisDateFormat;
+    byte nextDateFormat;
+#if defined(WOLFSSL_NGINX) || defined(WOLFSSL_HAPROXY)
+    byte* thisDateAsn;
+    byte* nextDateAsn;
+#endif
+
+    byte*  rawOcspResponse;
+    word32 rawOcspResponseSz;
+};
+
+
+struct OcspResponse {
+    int     responseStatus;  /* return code from Responder */
+
+    byte*   response;        /* Pointer to beginning of OCSP Response */
+    word32  responseSz;      /* length of the OCSP Response */
+
+    byte    producedDate[MAX_DATE_SIZE];
+                             /* Date at which this response was signed */
+    byte    producedDateFormat; /* format of the producedDate */
+    byte*   issuerHash;
+    byte*   issuerKeyHash;
+
+    byte*   cert;
+    word32  certSz;
+
+    byte*   sig;             /* Pointer to sig in source */
+    word32  sigSz;           /* Length in octets for the sig */
+    word32  sigOID;          /* OID for hash used for sig */
+
+    CertStatus* status;      /* certificate status to fill out */
+
+    byte*   nonce;           /* pointer to nonce inside ASN.1 response */
+    int     nonceSz;         /* length of the nonce string */
+
+    byte*   source;          /* pointer to source buffer, not owned */
+    word32  maxIdx;          /* max offset based on init size */
+};
+
+
+struct OcspRequest {
+    byte   issuerHash[KEYID_SIZE];
+    byte   issuerKeyHash[KEYID_SIZE];
+    byte*  serial;   /* copy of the serial number in source cert */
+    int    serialSz;
+    byte*  url;      /* copy of the extAuthInfo in source cert */
+    int    urlSz;
+
+    byte   nonce[MAX_OCSP_NONCE_SZ];
+    int    nonceSz;
+    void*  heap;
+
+#if defined(WOLFSSL_NGINX) || defined(WOLFSSL_HAPROXY)
+    void*  ssl;
+#endif
+};
+
+
+WOLFSSL_LOCAL void InitOcspResponse(OcspResponse*, CertStatus*, byte*, word32);
+WOLFSSL_LOCAL int  OcspResponseDecode(OcspResponse*, void*, void* heap, int);
+
+WOLFSSL_LOCAL int    InitOcspRequest(OcspRequest*, DecodedCert*, byte, void*);
+WOLFSSL_LOCAL void   FreeOcspRequest(OcspRequest*);
+WOLFSSL_LOCAL int    EncodeOcspRequest(OcspRequest*, byte*, word32);
+WOLFSSL_LOCAL word32 EncodeOcspRequestExtensions(OcspRequest*, byte*, word32);
+
+
+WOLFSSL_LOCAL int  CompareOcspReqResp(OcspRequest*, OcspResponse*);
+
+
+#endif /* HAVE_OCSP */
+
+
+/* for pointer use */
+typedef struct RevokedCert RevokedCert;
+
+#ifdef HAVE_CRL
+
+struct RevokedCert {
+    byte         serialNumber[EXTERNAL_SERIAL_SIZE];
+    int          serialSz;
+    RevokedCert* next;
+};
+
+typedef struct DecodedCRL DecodedCRL;
+
+struct DecodedCRL {
+    word32  certBegin;               /* offset to start of cert          */
+    word32  sigIndex;                /* offset to start of signature     */
+    word32  sigLength;               /* length of signature              */
+    word32  signatureOID;            /* sum of algorithm object id       */
+    byte*   signature;               /* pointer into raw source, not owned */
+    byte    issuerHash[SIGNER_DIGEST_SIZE]; /* issuer hash               */
+    byte    crlHash[SIGNER_DIGEST_SIZE]; /* raw crl data hash            */
+    byte    lastDate[MAX_DATE_SIZE]; /* last date updated  */
+    byte    nextDate[MAX_DATE_SIZE]; /* next update date   */
+    byte    lastDateFormat;          /* format of last date */
+    byte    nextDateFormat;          /* format of next date */
+    RevokedCert* certs;              /* revoked cert list  */
+    int          totalCerts;         /* number on list     */
+    void*   heap;
+};
+
+WOLFSSL_LOCAL void InitDecodedCRL(DecodedCRL*, void* heap);
+WOLFSSL_LOCAL int VerifyCRL_Signature(SignatureCtx* sigCtx,
+                                      const byte* toBeSigned, word32 tbsSz,
+                                      const byte* signature, word32 sigSz,
+                                      word32 signatureOID, Signer *ca,
+                                      void* heap);
+WOLFSSL_LOCAL int  ParseCRL(DecodedCRL*, const byte* buff, word32 sz, void* cm);
+WOLFSSL_LOCAL void FreeDecodedCRL(DecodedCRL*);
+
+
+#endif /* HAVE_CRL */
+
+
+#ifdef __cplusplus
+    } /* extern "C" */
+#endif
+
+#endif /* !NO_ASN */
+#endif /* WOLF_CRYPT_ASN_H */
+