diff options
Diffstat (limited to 'epan/dissectors/packet-pkcs12.c')
| -rw-r--r-- | epan/dissectors/packet-pkcs12.c | 1429 |
1 files changed, 1429 insertions, 0 deletions
diff --git a/epan/dissectors/packet-pkcs12.c b/epan/dissectors/packet-pkcs12.c new file mode 100644 index 00000000..86075eba --- /dev/null +++ b/epan/dissectors/packet-pkcs12.c @@ -0,0 +1,1429 @@ +/* Do not modify this file. Changes will be overwritten. */ +/* Generated automatically by the ASN.1 to Wireshark dissector compiler */ +/* packet-pkcs12.c */ +/* asn2wrs.py -b -L -p pkcs12 -c ./pkcs12.cnf -s ./packet-pkcs12-template -D . -O ../.. pkcs12.asn */ + +/* packet-pkcs12.c + * Routines for PKCS#12: Personal Information Exchange packet dissection + * Graeme Lunt 2006 + * + * See "PKCS #12 v1.1: Personal Information Exchange Syntax": + * + * http://www.emc.com/emc-plus/rsa-labs/pkcs/files/h11301-wp-pkcs-12v1-1-personal-information-exchange-syntax.pdf + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "config.h" + +#include <epan/packet.h> +#include <epan/expert.h> +#include <epan/oids.h> +#include <epan/asn1.h> +#include <epan/prefs.h> + +#include "packet-ber.h" +#include "packet-pkcs12.h" +#include "packet-x509af.h" +#include "packet-x509if.h" +#include "packet-cms.h" + +#include <wsutil/wsgcrypt.h> + +#define PNAME "PKCS#12: Personal Information Exchange" +#define PSNAME "PKCS12" +#define PFNAME "pkcs12" + +#define PKCS12_PBE_ARCFOUR_SHA1_OID "1.2.840.113549.1.12.1.1" +#define PKCS12_PBE_3DES_SHA1_OID "1.2.840.113549.1.12.1.3" +#define PKCS12_PBE_RC2_40_SHA1_OID "1.2.840.113549.1.12.1.6" + +void proto_register_pkcs12(void); +void proto_reg_handoff_pkcs12(void); + +/* Initialize the protocol and registered fields */ +static int proto_pkcs12 = -1; + +static int hf_pkcs12_X509Certificate_PDU = -1; +static int hf_pkcs12_AuthenticatedSafe_PDU = -1; /* AuthenticatedSafe */ +static gint ett_decrypted_pbe = -1; + +static expert_field ei_pkcs12_octet_string_expected = EI_INIT; + + +static const char *object_identifier_id = NULL; +static int iteration_count = 0; +static tvbuff_t *salt = NULL; +static const char *password = NULL; +static gboolean try_null_password = FALSE; + +static int dissect_AuthenticatedSafe_OCTETSTRING_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data); +static int dissect_SafeContents_OCTETSTRING_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data); +static int dissect_PrivateKeyInfo_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data); + +static int hf_pkcs12_PFX_PDU = -1; /* PFX */ +static int hf_pkcs12_SafeContents_PDU = -1; /* SafeContents */ +static int hf_pkcs12_KeyBag_PDU = -1; /* KeyBag */ +static int hf_pkcs12_PKCS8ShroudedKeyBag_PDU = -1; /* PKCS8ShroudedKeyBag */ +static int hf_pkcs12_CertBag_PDU = -1; /* CertBag */ +static int hf_pkcs12_CRLBag_PDU = -1; /* CRLBag */ +static int hf_pkcs12_SecretBag_PDU = -1; /* SecretBag */ +static int hf_pkcs12_PrivateKeyInfo_PDU = -1; /* PrivateKeyInfo */ +static int hf_pkcs12_EncryptedPrivateKeyInfo_PDU = -1; /* EncryptedPrivateKeyInfo */ +static int hf_pkcs12_PBEParameter_PDU = -1; /* PBEParameter */ +static int hf_pkcs12_PBKDF2Params_PDU = -1; /* PBKDF2Params */ +static int hf_pkcs12_PBES2Params_PDU = -1; /* PBES2Params */ +static int hf_pkcs12_PBMAC1Params_PDU = -1; /* PBMAC1Params */ +static int hf_pkcs12_version = -1; /* T_version */ +static int hf_pkcs12_authSafe = -1; /* ContentInfo */ +static int hf_pkcs12_macData = -1; /* MacData */ +static int hf_pkcs12_mac = -1; /* DigestInfo */ +static int hf_pkcs12_macSalt = -1; /* OCTET_STRING */ +static int hf_pkcs12_iterations = -1; /* INTEGER */ +static int hf_pkcs12_AuthenticatedSafe_item = -1; /* ContentInfo */ +static int hf_pkcs12_SafeContents_item = -1; /* SafeBag */ +static int hf_pkcs12_bagId = -1; /* T_bagId */ +static int hf_pkcs12_bagValue = -1; /* T_bagValue */ +static int hf_pkcs12_bagAttributes = -1; /* SET_OF_PKCS12Attribute */ +static int hf_pkcs12_bagAttributes_item = -1; /* PKCS12Attribute */ +static int hf_pkcs12_certId = -1; /* T_certId */ +static int hf_pkcs12_certValue = -1; /* T_certValue */ +static int hf_pkcs12_crlId = -1; /* T_crlId */ +static int hf_pkcs12_crlValue = -1; /* T_crlValue */ +static int hf_pkcs12_secretTypeId = -1; /* T_secretTypeId */ +static int hf_pkcs12_secretValue = -1; /* T_secretValue */ +static int hf_pkcs12_attrId = -1; /* T_attrId */ +static int hf_pkcs12_attrValues = -1; /* T_attrValues */ +static int hf_pkcs12_attrValues_item = -1; /* T_attrValues_item */ +static int hf_pkcs12_privateKeyVersion = -1; /* Version */ +static int hf_pkcs12_privateKeyAlgorithm = -1; /* AlgorithmIdentifier */ +static int hf_pkcs12_privateKey = -1; /* PrivateKey */ +static int hf_pkcs12_attributes = -1; /* Attributes */ +static int hf_pkcs12_Attributes_item = -1; /* Attribute */ +static int hf_pkcs12_encryptionAlgorithm = -1; /* AlgorithmIdentifier */ +static int hf_pkcs12_encryptedData = -1; /* EncryptedData */ +static int hf_pkcs12_salt = -1; /* OCTET_STRING */ +static int hf_pkcs12_iterationCount = -1; /* INTEGER */ +static int hf_pkcs12_saltChoice = -1; /* T_saltChoice */ +static int hf_pkcs12_specified = -1; /* OCTET_STRING */ +static int hf_pkcs12_otherSource = -1; /* AlgorithmIdentifier */ +static int hf_pkcs12_keyLength = -1; /* INTEGER_1_MAX */ +static int hf_pkcs12_prf = -1; /* AlgorithmIdentifier */ +static int hf_pkcs12_keyDerivationFunc = -1; /* AlgorithmIdentifier */ +static int hf_pkcs12_encryptionScheme = -1; /* AlgorithmIdentifier */ +static int hf_pkcs12_messageAuthScheme = -1; /* AlgorithmIdentifier */ + +/* Initialize the subtree pointers */ +static gint ett_pkcs12_PFX = -1; +static gint ett_pkcs12_MacData = -1; +static gint ett_pkcs12_AuthenticatedSafe = -1; +static gint ett_pkcs12_SafeContents = -1; +static gint ett_pkcs12_SafeBag = -1; +static gint ett_pkcs12_SET_OF_PKCS12Attribute = -1; +static gint ett_pkcs12_CertBag = -1; +static gint ett_pkcs12_CRLBag = -1; +static gint ett_pkcs12_SecretBag = -1; +static gint ett_pkcs12_PKCS12Attribute = -1; +static gint ett_pkcs12_T_attrValues = -1; +static gint ett_pkcs12_PrivateKeyInfo = -1; +static gint ett_pkcs12_Attributes = -1; +static gint ett_pkcs12_EncryptedPrivateKeyInfo = -1; +static gint ett_pkcs12_PBEParameter = -1; +static gint ett_pkcs12_PBKDF2Params = -1; +static gint ett_pkcs12_T_saltChoice = -1; +static gint ett_pkcs12_PBES2Params = -1; +static gint ett_pkcs12_PBMAC1Params = -1; + +static void append_oid(wmem_allocator_t *pool, proto_tree *tree, const char *oid) +{ + const char *name = NULL; + + name = oid_resolved_from_string(pool, oid); + proto_item_append_text(tree, " (%s)", name ? name : oid); +} + +static int +generate_key_or_iv(packet_info *pinfo, unsigned int id, tvbuff_t *salt_tvb, unsigned int iter, + const char *pw, unsigned int req_keylen, char * keybuf) +{ + int rc; + unsigned int i, j; + gcry_md_hd_t md; + gcry_mpi_t num_b1 = NULL; + size_t pwlen; + char hash[20], buf_b[64], buf_i[128], *p; + char *salt_p; + int salt_size; + size_t cur_keylen; + size_t n; + gcry_error_t err; + + cur_keylen = 0; + + salt_size = tvb_captured_length(salt_tvb); + salt_p = (char *)tvb_memdup(pinfo->pool, salt_tvb, 0, salt_size); + + if (pw == NULL) + pwlen = 0; + else + pwlen = strlen(pw); + + if (pwlen > 63 / 2) + { + return FALSE; + } + + /* Store salt and password in BUF_I */ + p = buf_i; + for (i = 0; i < 64; i++) + *p++ = salt_p[i % salt_size]; + if (pw) + { + for (i = j = 0; i < 64; i += 2) + { + *p++ = 0; + *p++ = pw[j]; + if (++j > pwlen) /* Note, that we include the trailing zero */ + j = 0; + } + } + else + memset (p, 0, 64); + + for (;;) { + err = gcry_md_open(&md, GCRY_MD_SHA1, 0); + if (gcry_err_code(err)) + { + return FALSE; + } + for (i = 0; i < 64; i++) + { + unsigned char lid = id & 0xFF; + gcry_md_write (md, &lid, 1); + } + + gcry_md_write(md, buf_i, pw ? 128 : 64); + + gcry_md_final (md); + memcpy (hash, gcry_md_read (md, 0), 20); + + gcry_md_close (md); + + for (i = 1; i < iter; i++) + gcry_md_hash_buffer (GCRY_MD_SHA1, hash, hash, 20); + + for (i = 0; i < 20 && cur_keylen < req_keylen; i++) + keybuf[cur_keylen++] = hash[i]; + + if (cur_keylen == req_keylen) + { + gcry_mpi_release (num_b1); + return TRUE; /* ready */ + } + + /* need more bytes. */ + for (i = 0; i < 64; i++) + buf_b[i] = hash[i % 20]; + + n = 64; + + rc = gcry_mpi_scan (&num_b1, GCRYMPI_FMT_USG, buf_b, n, &n); + + if (rc != 0) + { + return FALSE; + } + + gcry_mpi_add_ui (num_b1, num_b1, 1); + + for (i = 0; i < 128; i += 64) + { + gcry_mpi_t num_ij; + + n = 64; + rc = gcry_mpi_scan (&num_ij, GCRYMPI_FMT_USG, buf_i + i, n, &n); + + if (rc != 0) + { + return FALSE; + } + + gcry_mpi_add (num_ij, num_ij, num_b1); + gcry_mpi_clear_highbit (num_ij, 64 * 8); + + n = 64; + + rc = gcry_mpi_print (GCRYMPI_FMT_USG, buf_i + i, n, &n, num_ij); + if (rc != 0) + { + return FALSE; + } + + gcry_mpi_release (num_ij); + } + } +} + +void PBE_reset_parameters(void) +{ + iteration_count = 0; + salt = NULL; +} + +int PBE_decrypt_data(const char *object_identifier_id_param _U_, tvbuff_t *encrypted_tvb _U_, packet_info *pinfo _U_, asn1_ctx_t *actx _U_, proto_item *item _U_) +{ + const char *encryption_algorithm; + gcry_cipher_hd_t cipher; + gcry_error_t err; + int algo; + int mode; + int ivlen = 0; + int keylen = 0; + int datalen = 0; + char *key = NULL; + char *iv = NULL; + char *clear_data = NULL; + tvbuff_t *clear_tvb = NULL; + const gchar *oidname; + GString *name; + proto_tree *tree; + char byte; + gboolean decrypt_ok = TRUE; + + if(((password == NULL) || (*password == '\0')) && (try_null_password == FALSE)) { + /* we are not configured to decrypt */ + return FALSE; + } + + encryption_algorithm = x509af_get_last_algorithm_id(); + + /* these are the only encryption schemes we understand for now */ + if(!strcmp(encryption_algorithm, PKCS12_PBE_3DES_SHA1_OID)) { + ivlen = 8; + keylen = 24; + algo = GCRY_CIPHER_3DES; + mode = GCRY_CIPHER_MODE_CBC; + } else if(!strcmp(encryption_algorithm, PKCS12_PBE_ARCFOUR_SHA1_OID)) { + ivlen = 0; + keylen = 16; + algo = GCRY_CIPHER_ARCFOUR; + mode = GCRY_CIPHER_MODE_NONE; + } else if(!strcmp(encryption_algorithm, PKCS12_PBE_RC2_40_SHA1_OID)) { + ivlen = 8; + keylen = 5; + algo = GCRY_CIPHER_RFC2268_40; + mode = GCRY_CIPHER_MODE_CBC; + } else { + /* we don't know how to decrypt this */ + + proto_item_append_text(item, " [Unsupported encryption algorithm]"); + return FALSE; + } + + if((iteration_count == 0) || (salt == NULL)) { + proto_item_append_text(item, " [Insufficient parameters]"); + return FALSE; + } + + /* allocate buffers */ + key = (char *)wmem_alloc(pinfo->pool, keylen); + + if(!generate_key_or_iv(pinfo, 1 /*LEY */, salt, iteration_count, password, keylen, key)) + return FALSE; + + if(ivlen) { + + iv = (char *)wmem_alloc(pinfo->pool, ivlen); + + if(!generate_key_or_iv(pinfo, 2 /* IV */, salt, iteration_count, password, ivlen, iv)) + return FALSE; + } + + /* now try an internal function */ + err = gcry_cipher_open(&cipher, algo, mode, 0); + if (gcry_err_code (err)) + return FALSE; + + err = gcry_cipher_setkey (cipher, key, keylen); + if (gcry_err_code (err)) { + gcry_cipher_close (cipher); + return FALSE; + } + + if(ivlen) { + err = gcry_cipher_setiv (cipher, iv, ivlen); + if (gcry_err_code (err)) { + gcry_cipher_close (cipher); + return FALSE; + } + } + + datalen = tvb_captured_length(encrypted_tvb); + clear_data = (char *)wmem_alloc(pinfo->pool, datalen); + + err = gcry_cipher_decrypt (cipher, clear_data, datalen, (char *)tvb_memdup(pinfo->pool, encrypted_tvb, 0, datalen), datalen); + if (gcry_err_code (err)) { + + proto_item_append_text(item, " [Failed to decrypt with password preference]"); + + gcry_cipher_close (cipher); + return FALSE; + } + + gcry_cipher_close (cipher); + + /* We don't know if we have successfully decrypted the data or not so we: + a) check the trailing bytes + b) see if we start with a sequence or a set (is this too constraining? + */ + + /* first the trailing bytes */ + byte = clear_data[datalen-1]; + if(byte <= 0x08) { + int i; + + for(i = (int)byte; i > 0 ; i--) { + if(clear_data[datalen - i] != byte) { + decrypt_ok = FALSE; + break; + } + } + } else { + /* XXX: is this a failure? */ + } + + /* we assume the result is ASN.1 - check it is a SET or SEQUENCE */ + byte = clear_data[0]; + if((byte != 0x30) && (byte != 0x31)) { /* do we need more here? OCTET STRING? */ + decrypt_ok = FALSE; + } + + if(!decrypt_ok) { + proto_item_append_text(item, " [Failed to decrypt with supplied password]"); + + return FALSE; + } + + proto_item_append_text(item, " [Decrypted successfully]"); + + tree = proto_item_add_subtree(item, ett_decrypted_pbe); + + /* OK - so now clear_data contains the decrypted data */ + + clear_tvb = tvb_new_child_real_data(encrypted_tvb,(const guint8 *)clear_data, datalen, datalen); + + name = g_string_new(""); + oidname = oid_resolved_from_string(pinfo->pool, object_identifier_id_param); + g_string_printf(name, "Decrypted %s", oidname ? oidname : object_identifier_id_param); + + /* add it as a new source */ + add_new_data_source(actx->pinfo, clear_tvb, name->str); + + g_string_free(name, TRUE); + + /* now try and decode it */ + call_ber_oid_callback(object_identifier_id_param, clear_tvb, 0, actx->pinfo, tree, NULL); + + return TRUE; +} + + +static const value_string pkcs12_T_version_vals[] = { + { 3, "v3" }, + { 0, NULL } +}; + + +static int +dissect_pkcs12_T_version(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index, + NULL); + + return offset; +} + + + +static int +dissect_pkcs12_OCTET_STRING(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index, + (hf_index == hf_pkcs12_salt ? &salt : NULL)); + + return offset; +} + + + +static int +dissect_pkcs12_INTEGER(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index, + (hf_index == hf_pkcs12_iterationCount ? &iteration_count : NULL)); + + return offset; +} + + +static const ber_sequence_t MacData_sequence[] = { + { &hf_pkcs12_mac , BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_cms_DigestInfo }, + { &hf_pkcs12_macSalt , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_pkcs12_OCTET_STRING }, + { &hf_pkcs12_iterations , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_OPTIONAL|BER_FLAGS_NOOWNTAG, dissect_pkcs12_INTEGER }, + { NULL, 0, 0, 0, NULL } +}; + +static int +dissect_pkcs12_MacData(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset, + MacData_sequence, hf_index, ett_pkcs12_MacData); + + return offset; +} + + +static const ber_sequence_t PFX_sequence[] = { + { &hf_pkcs12_version , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_pkcs12_T_version }, + { &hf_pkcs12_authSafe , BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_cms_ContentInfo }, + { &hf_pkcs12_macData , BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_OPTIONAL|BER_FLAGS_NOOWNTAG, dissect_pkcs12_MacData }, + { NULL, 0, 0, 0, NULL } +}; + +static int +dissect_pkcs12_PFX(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + dissector_handle_t dissector_handle; + + /* we change the CMS id-data dissector to dissect as AuthenticatedSafe + not sure why PKCS#12 couldn't have used its own content type OID for AuthenticatedSafe */ + dissector_handle=create_dissector_handle(dissect_AuthenticatedSafe_OCTETSTRING_PDU, proto_pkcs12); + dissector_change_string("ber.oid", "1.2.840.113549.1.7.1", dissector_handle); + + offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset, + PFX_sequence, hf_index, ett_pkcs12_PFX); + + + /* restore the original dissector */ + dissector_reset_string("ber.oid", "1.2.840.113549.1.7.1"); + + + return offset; +} + + +static const ber_sequence_t AuthenticatedSafe_sequence_of[1] = { + { &hf_pkcs12_AuthenticatedSafe_item, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_cms_ContentInfo }, +}; + +static int +dissect_pkcs12_AuthenticatedSafe(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + dissector_handle_t dissector_handle; + + /* we change the CMS id-data dissector to dissect as SafeContents */ + dissector_handle=create_dissector_handle(dissect_SafeContents_OCTETSTRING_PDU, proto_pkcs12); + dissector_change_string("ber.oid", "1.2.840.113549.1.7.1", dissector_handle); + + offset = dissect_ber_sequence_of(implicit_tag, actx, tree, tvb, offset, + AuthenticatedSafe_sequence_of, hf_index, ett_pkcs12_AuthenticatedSafe); + + + /* restore the original dissector */ + dissector_reset_string("ber.oid", "1.2.840.113549.1.7.1"); + + + return offset; +} + + + +static int +dissect_pkcs12_T_bagId(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_object_identifier_str(implicit_tag, actx, tree, tvb, offset, hf_index, &object_identifier_id); + + append_oid(actx->pinfo->pool, tree, object_identifier_id); + return offset; +} + + + +static int +dissect_pkcs12_T_bagValue(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + if(object_identifier_id) + offset = call_ber_oid_callback(object_identifier_id, tvb, offset, actx->pinfo, tree, NULL); + + + return offset; +} + + + +static int +dissect_pkcs12_T_attrId(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_object_identifier_str(implicit_tag, actx, tree, tvb, offset, hf_index, &object_identifier_id); + + append_oid(actx->pinfo->pool, tree, object_identifier_id); + return offset; +} + + + +static int +dissect_pkcs12_T_attrValues_item(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + if(object_identifier_id) + offset = call_ber_oid_callback(object_identifier_id, tvb, offset, actx->pinfo, tree, NULL); + + + return offset; +} + + +static const ber_sequence_t T_attrValues_set_of[1] = { + { &hf_pkcs12_attrValues_item, BER_CLASS_ANY, 0, BER_FLAGS_NOOWNTAG, dissect_pkcs12_T_attrValues_item }, +}; + +static int +dissect_pkcs12_T_attrValues(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_set_of(implicit_tag, actx, tree, tvb, offset, + T_attrValues_set_of, hf_index, ett_pkcs12_T_attrValues); + + return offset; +} + + +static const ber_sequence_t PKCS12Attribute_sequence[] = { + { &hf_pkcs12_attrId , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_pkcs12_T_attrId }, + { &hf_pkcs12_attrValues , BER_CLASS_UNI, BER_UNI_TAG_SET, BER_FLAGS_NOOWNTAG, dissect_pkcs12_T_attrValues }, + { NULL, 0, 0, 0, NULL } +}; + +static int +dissect_pkcs12_PKCS12Attribute(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset, + PKCS12Attribute_sequence, hf_index, ett_pkcs12_PKCS12Attribute); + + return offset; +} + + +static const ber_sequence_t SET_OF_PKCS12Attribute_set_of[1] = { + { &hf_pkcs12_bagAttributes_item, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_pkcs12_PKCS12Attribute }, +}; + +static int +dissect_pkcs12_SET_OF_PKCS12Attribute(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_set_of(implicit_tag, actx, tree, tvb, offset, + SET_OF_PKCS12Attribute_set_of, hf_index, ett_pkcs12_SET_OF_PKCS12Attribute); + + return offset; +} + + +static const ber_sequence_t SafeBag_sequence[] = { + { &hf_pkcs12_bagId , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_pkcs12_T_bagId }, + { &hf_pkcs12_bagValue , BER_CLASS_CON, 0, 0, dissect_pkcs12_T_bagValue }, + { &hf_pkcs12_bagAttributes, BER_CLASS_UNI, BER_UNI_TAG_SET, BER_FLAGS_OPTIONAL|BER_FLAGS_NOOWNTAG, dissect_pkcs12_SET_OF_PKCS12Attribute }, + { NULL, 0, 0, 0, NULL } +}; + +static int +dissect_pkcs12_SafeBag(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset, + SafeBag_sequence, hf_index, ett_pkcs12_SafeBag); + + return offset; +} + + +static const ber_sequence_t SafeContents_sequence_of[1] = { + { &hf_pkcs12_SafeContents_item, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_pkcs12_SafeBag }, +}; + +static int +dissect_pkcs12_SafeContents(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_sequence_of(implicit_tag, actx, tree, tvb, offset, + SafeContents_sequence_of, hf_index, ett_pkcs12_SafeContents); + + return offset; +} + + +static const value_string pkcs12_Version_vals[] = { + { 0, "v1" }, + { 0, NULL } +}; + + +static int +dissect_pkcs12_Version(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index, + NULL); + + return offset; +} + + + +static int +dissect_pkcs12_PrivateKey(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index, + NULL); + + return offset; +} + + +static const ber_sequence_t Attributes_set_of[1] = { + { &hf_pkcs12_Attributes_item, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_x509if_Attribute }, +}; + +static int +dissect_pkcs12_Attributes(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_set_of(implicit_tag, actx, tree, tvb, offset, + Attributes_set_of, hf_index, ett_pkcs12_Attributes); + + return offset; +} + + +static const ber_sequence_t PrivateKeyInfo_sequence[] = { + { &hf_pkcs12_privateKeyVersion, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_pkcs12_Version }, + { &hf_pkcs12_privateKeyAlgorithm, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_x509af_AlgorithmIdentifier }, + { &hf_pkcs12_privateKey , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_pkcs12_PrivateKey }, + { &hf_pkcs12_attributes , BER_CLASS_CON, 0, BER_FLAGS_OPTIONAL|BER_FLAGS_IMPLTAG, dissect_pkcs12_Attributes }, + { NULL, 0, 0, 0, NULL } +}; + +static int +dissect_pkcs12_PrivateKeyInfo(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset, + PrivateKeyInfo_sequence, hf_index, ett_pkcs12_PrivateKeyInfo); + + return offset; +} + + + +static int +dissect_pkcs12_KeyBag(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_pkcs12_PrivateKeyInfo(implicit_tag, tvb, offset, actx, tree, hf_index); + + return offset; +} + + + +static int +dissect_pkcs12_EncryptedData(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + tvbuff_t *encrypted_tvb; + dissector_handle_t dissector_handle; + + offset = dissect_ber_octet_string(implicit_tag, actx, tree, tvb, offset, hf_index, + &encrypted_tvb); + + + + + dissector_handle=create_dissector_handle(dissect_PrivateKeyInfo_PDU, proto_pkcs12); + dissector_change_string("ber.oid", object_identifier_id, dissector_handle); + + PBE_decrypt_data(object_identifier_id, encrypted_tvb, actx->pinfo, actx, actx->created_item); + + /* restore the original dissector */ + dissector_reset_string("ber.oid", object_identifier_id); + + return offset; +} + + +static const ber_sequence_t EncryptedPrivateKeyInfo_sequence[] = { + { &hf_pkcs12_encryptionAlgorithm, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_x509af_AlgorithmIdentifier }, + { &hf_pkcs12_encryptedData, BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_pkcs12_EncryptedData }, + { NULL, 0, 0, 0, NULL } +}; + +static int +dissect_pkcs12_EncryptedPrivateKeyInfo(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset, + EncryptedPrivateKeyInfo_sequence, hf_index, ett_pkcs12_EncryptedPrivateKeyInfo); + + return offset; +} + + + +static int +dissect_pkcs12_PKCS8ShroudedKeyBag(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_pkcs12_EncryptedPrivateKeyInfo(implicit_tag, tvb, offset, actx, tree, hf_index); + + return offset; +} + + + +static int +dissect_pkcs12_T_certId(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_object_identifier_str(implicit_tag, actx, tree, tvb, offset, hf_index, &object_identifier_id); + + append_oid(actx->pinfo->pool, tree, object_identifier_id); + return offset; +} + + + +static int +dissect_pkcs12_T_certValue(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + if(object_identifier_id) + offset = call_ber_oid_callback(object_identifier_id, tvb, offset, actx->pinfo, tree, NULL); + + + return offset; +} + + +static const ber_sequence_t CertBag_sequence[] = { + { &hf_pkcs12_certId , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_pkcs12_T_certId }, + { &hf_pkcs12_certValue , BER_CLASS_CON, 0, 0, dissect_pkcs12_T_certValue }, + { NULL, 0, 0, 0, NULL } +}; + +static int +dissect_pkcs12_CertBag(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset, + CertBag_sequence, hf_index, ett_pkcs12_CertBag); + + return offset; +} + + + +static int +dissect_pkcs12_T_crlId(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_object_identifier_str(implicit_tag, actx, tree, tvb, offset, hf_index, &object_identifier_id); + + append_oid(actx->pinfo->pool, tree, object_identifier_id); + return offset; +} + + + +static int +dissect_pkcs12_T_crlValue(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + if(object_identifier_id) + offset = call_ber_oid_callback(object_identifier_id, tvb, offset, actx->pinfo, tree, NULL); + + + return offset; +} + + +static const ber_sequence_t CRLBag_sequence[] = { + { &hf_pkcs12_crlId , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_pkcs12_T_crlId }, + { &hf_pkcs12_crlValue , BER_CLASS_CON, 0, 0, dissect_pkcs12_T_crlValue }, + { NULL, 0, 0, 0, NULL } +}; + +static int +dissect_pkcs12_CRLBag(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset, + CRLBag_sequence, hf_index, ett_pkcs12_CRLBag); + + return offset; +} + + + +static int +dissect_pkcs12_T_secretTypeId(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_object_identifier_str(implicit_tag, actx, tree, tvb, offset, hf_index, &object_identifier_id); + + append_oid(actx->pinfo->pool, tree, object_identifier_id); + return offset; +} + + + +static int +dissect_pkcs12_T_secretValue(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + if(object_identifier_id) + offset = call_ber_oid_callback(object_identifier_id, tvb, offset, actx->pinfo, tree, NULL); + + + return offset; +} + + +static const ber_sequence_t SecretBag_sequence[] = { + { &hf_pkcs12_secretTypeId , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_pkcs12_T_secretTypeId }, + { &hf_pkcs12_secretValue , BER_CLASS_CON, 0, 0, dissect_pkcs12_T_secretValue }, + { NULL, 0, 0, 0, NULL } +}; + +static int +dissect_pkcs12_SecretBag(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset, + SecretBag_sequence, hf_index, ett_pkcs12_SecretBag); + + return offset; +} + + +static const ber_sequence_t PBEParameter_sequence[] = { + { &hf_pkcs12_salt , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_pkcs12_OCTET_STRING }, + { &hf_pkcs12_iterationCount, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_pkcs12_INTEGER }, + { NULL, 0, 0, 0, NULL } +}; + +static int +dissect_pkcs12_PBEParameter(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + /* initialise the encryption parameters */ + PBE_reset_parameters(); + + offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset, + PBEParameter_sequence, hf_index, ett_pkcs12_PBEParameter); + + return offset; +} + + +static const value_string pkcs12_T_saltChoice_vals[] = { + { 0, "specified" }, + { 1, "otherSource" }, + { 0, NULL } +}; + +static const ber_choice_t T_saltChoice_choice[] = { + { 0, &hf_pkcs12_specified , BER_CLASS_UNI, BER_UNI_TAG_OCTETSTRING, BER_FLAGS_NOOWNTAG, dissect_pkcs12_OCTET_STRING }, + { 1, &hf_pkcs12_otherSource , BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_x509af_AlgorithmIdentifier }, + { 0, NULL, 0, 0, 0, NULL } +}; + +static int +dissect_pkcs12_T_saltChoice(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_choice(actx, tree, tvb, offset, + T_saltChoice_choice, hf_index, ett_pkcs12_T_saltChoice, + NULL); + + return offset; +} + + + +static int +dissect_pkcs12_INTEGER_1_MAX(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_integer64(implicit_tag, actx, tree, tvb, offset, hf_index, + NULL); + + return offset; +} + + +static const ber_sequence_t PBKDF2Params_sequence[] = { + { &hf_pkcs12_saltChoice , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_pkcs12_T_saltChoice }, + { &hf_pkcs12_iterationCount, BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_pkcs12_INTEGER }, + { &hf_pkcs12_keyLength , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_OPTIONAL|BER_FLAGS_NOOWNTAG, dissect_pkcs12_INTEGER_1_MAX }, + { &hf_pkcs12_prf , BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_OPTIONAL|BER_FLAGS_NOOWNTAG, dissect_x509af_AlgorithmIdentifier }, + { NULL, 0, 0, 0, NULL } +}; + +static int +dissect_pkcs12_PBKDF2Params(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset, + PBKDF2Params_sequence, hf_index, ett_pkcs12_PBKDF2Params); + + return offset; +} + + +static const ber_sequence_t PBES2Params_sequence[] = { + { &hf_pkcs12_keyDerivationFunc, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_x509af_AlgorithmIdentifier }, + { &hf_pkcs12_encryptionScheme, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_x509af_AlgorithmIdentifier }, + { NULL, 0, 0, 0, NULL } +}; + +static int +dissect_pkcs12_PBES2Params(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset, + PBES2Params_sequence, hf_index, ett_pkcs12_PBES2Params); + + return offset; +} + + +static const ber_sequence_t PBMAC1Params_sequence[] = { + { &hf_pkcs12_keyDerivationFunc, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_x509af_AlgorithmIdentifier }, + { &hf_pkcs12_messageAuthScheme, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_x509af_AlgorithmIdentifier }, + { NULL, 0, 0, 0, NULL } +}; + +static int +dissect_pkcs12_PBMAC1Params(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset, + PBMAC1Params_sequence, hf_index, ett_pkcs12_PBMAC1Params); + + return offset; +} + +/*--- PDUs ---*/ + +static int dissect_PFX_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_, void *data _U_) { + int offset = 0; + asn1_ctx_t asn1_ctx; + asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo); + offset = dissect_pkcs12_PFX(FALSE, tvb, offset, &asn1_ctx, tree, hf_pkcs12_PFX_PDU); + return offset; +} +static int dissect_SafeContents_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_, void *data _U_) { + int offset = 0; + asn1_ctx_t asn1_ctx; + asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo); + offset = dissect_pkcs12_SafeContents(FALSE, tvb, offset, &asn1_ctx, tree, hf_pkcs12_SafeContents_PDU); + return offset; +} +static int dissect_KeyBag_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_, void *data _U_) { + int offset = 0; + asn1_ctx_t asn1_ctx; + asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo); + offset = dissect_pkcs12_KeyBag(FALSE, tvb, offset, &asn1_ctx, tree, hf_pkcs12_KeyBag_PDU); + return offset; +} +static int dissect_PKCS8ShroudedKeyBag_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_, void *data _U_) { + int offset = 0; + asn1_ctx_t asn1_ctx; + asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo); + offset = dissect_pkcs12_PKCS8ShroudedKeyBag(FALSE, tvb, offset, &asn1_ctx, tree, hf_pkcs12_PKCS8ShroudedKeyBag_PDU); + return offset; +} +static int dissect_CertBag_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_, void *data _U_) { + int offset = 0; + asn1_ctx_t asn1_ctx; + asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo); + offset = dissect_pkcs12_CertBag(FALSE, tvb, offset, &asn1_ctx, tree, hf_pkcs12_CertBag_PDU); + return offset; +} +static int dissect_CRLBag_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_, void *data _U_) { + int offset = 0; + asn1_ctx_t asn1_ctx; + asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo); + offset = dissect_pkcs12_CRLBag(FALSE, tvb, offset, &asn1_ctx, tree, hf_pkcs12_CRLBag_PDU); + return offset; +} +static int dissect_SecretBag_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_, void *data _U_) { + int offset = 0; + asn1_ctx_t asn1_ctx; + asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo); + offset = dissect_pkcs12_SecretBag(FALSE, tvb, offset, &asn1_ctx, tree, hf_pkcs12_SecretBag_PDU); + return offset; +} +static int dissect_PrivateKeyInfo_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_, void *data _U_) { + int offset = 0; + asn1_ctx_t asn1_ctx; + asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo); + offset = dissect_pkcs12_PrivateKeyInfo(FALSE, tvb, offset, &asn1_ctx, tree, hf_pkcs12_PrivateKeyInfo_PDU); + return offset; +} +static int dissect_EncryptedPrivateKeyInfo_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_, void *data _U_) { + int offset = 0; + asn1_ctx_t asn1_ctx; + asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo); + offset = dissect_pkcs12_EncryptedPrivateKeyInfo(FALSE, tvb, offset, &asn1_ctx, tree, hf_pkcs12_EncryptedPrivateKeyInfo_PDU); + return offset; +} +static int dissect_PBEParameter_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_, void *data _U_) { + int offset = 0; + asn1_ctx_t asn1_ctx; + asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo); + offset = dissect_pkcs12_PBEParameter(FALSE, tvb, offset, &asn1_ctx, tree, hf_pkcs12_PBEParameter_PDU); + return offset; +} +static int dissect_PBKDF2Params_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_, void *data _U_) { + int offset = 0; + asn1_ctx_t asn1_ctx; + asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo); + offset = dissect_pkcs12_PBKDF2Params(FALSE, tvb, offset, &asn1_ctx, tree, hf_pkcs12_PBKDF2Params_PDU); + return offset; +} +static int dissect_PBES2Params_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_, void *data _U_) { + int offset = 0; + asn1_ctx_t asn1_ctx; + asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo); + offset = dissect_pkcs12_PBES2Params(FALSE, tvb, offset, &asn1_ctx, tree, hf_pkcs12_PBES2Params_PDU); + return offset; +} +static int dissect_PBMAC1Params_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_, void *data _U_) { + int offset = 0; + asn1_ctx_t asn1_ctx; + asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo); + offset = dissect_pkcs12_PBMAC1Params(FALSE, tvb, offset, &asn1_ctx, tree, hf_pkcs12_PBMAC1Params_PDU); + return offset; +} + + +static int strip_octet_string(tvbuff_t *tvb) +{ + gint8 ber_class; + bool pc, ind; + gint32 tag; + guint32 len; + int offset = 0; + + /* PKCS#7 encodes the content as OCTET STRING, whereas CMS is just any ANY */ + /* if we use CMS (rather than PKCS#7) - which we are - we need to strip the OCTET STRING tag */ + /* before proceeding */ + + offset = get_ber_identifier(tvb, 0, &ber_class, &pc, &tag); + offset = get_ber_length(tvb, offset, &len, &ind); + + if((ber_class == BER_CLASS_UNI) && (tag == BER_UNI_TAG_OCTETSTRING)) + return offset; + + return 0; + +} + +static int dissect_AuthenticatedSafe_OCTETSTRING_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) { + int offset = 0; + asn1_ctx_t asn1_ctx; + asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo); + + if((offset = strip_octet_string(tvb)) > 0) + dissect_pkcs12_AuthenticatedSafe(FALSE, tvb, offset, &asn1_ctx, tree, hf_pkcs12_AuthenticatedSafe_PDU); + else + proto_tree_add_expert(tree, pinfo, &ei_pkcs12_octet_string_expected, tvb, 0, 1); + return tvb_captured_length(tvb); +} + +static int dissect_SafeContents_OCTETSTRING_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) +{ + int offset = 0; + asn1_ctx_t asn1_ctx; + asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo); + + offset = strip_octet_string(tvb); + + dissect_pkcs12_SafeContents(FALSE, tvb, offset, &asn1_ctx, tree, hf_pkcs12_SafeContents_PDU); + return tvb_captured_length(tvb); +} + +static int dissect_X509Certificate_OCTETSTRING_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) +{ + int offset = 0; + asn1_ctx_t asn1_ctx; + asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo); + + if((offset = strip_octet_string(tvb)) > 0) + dissect_x509af_Certificate(FALSE, tvb, offset, &asn1_ctx, tree, hf_pkcs12_X509Certificate_PDU); + else + proto_tree_add_expert(tree, pinfo, &ei_pkcs12_octet_string_expected, tvb, 0, 1); + + return tvb_captured_length(tvb); +} + +/*--- proto_register_pkcs12 ----------------------------------------------*/ +void proto_register_pkcs12(void) { + + /* List of fields */ + static hf_register_info hf[] = { + { &hf_pkcs12_X509Certificate_PDU, + { "X509Certificate", "pkcs12.X509Certificate", + FT_NONE, BASE_NONE, NULL, 0, + "pkcs12.X509Certificate", HFILL }}, + { &hf_pkcs12_AuthenticatedSafe_PDU, + { "AuthenticatedSafe", "pkcs12.AuthenticatedSafe", + FT_UINT32, BASE_DEC, NULL, 0, + NULL, HFILL }}, + + { &hf_pkcs12_PFX_PDU, + { "PFX", "pkcs12.PFX_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_SafeContents_PDU, + { "SafeContents", "pkcs12.SafeContents", + FT_UINT32, BASE_DEC, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_KeyBag_PDU, + { "KeyBag", "pkcs12.KeyBag_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_PKCS8ShroudedKeyBag_PDU, + { "PKCS8ShroudedKeyBag", "pkcs12.PKCS8ShroudedKeyBag_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_CertBag_PDU, + { "CertBag", "pkcs12.CertBag_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_CRLBag_PDU, + { "CRLBag", "pkcs12.CRLBag_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_SecretBag_PDU, + { "SecretBag", "pkcs12.SecretBag_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_PrivateKeyInfo_PDU, + { "PrivateKeyInfo", "pkcs12.PrivateKeyInfo_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_EncryptedPrivateKeyInfo_PDU, + { "EncryptedPrivateKeyInfo", "pkcs12.EncryptedPrivateKeyInfo_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_PBEParameter_PDU, + { "PBEParameter", "pkcs12.PBEParameter_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_PBKDF2Params_PDU, + { "PBKDF2Params", "pkcs12.PBKDF2Params_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_PBES2Params_PDU, + { "PBES2Params", "pkcs12.PBES2Params_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_PBMAC1Params_PDU, + { "PBMAC1Params", "pkcs12.PBMAC1Params_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_version, + { "version", "pkcs12.version", + FT_UINT32, BASE_DEC, VALS(pkcs12_T_version_vals), 0, + NULL, HFILL }}, + { &hf_pkcs12_authSafe, + { "authSafe", "pkcs12.authSafe_element", + FT_NONE, BASE_NONE, NULL, 0, + "ContentInfo", HFILL }}, + { &hf_pkcs12_macData, + { "macData", "pkcs12.macData_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_mac, + { "mac", "pkcs12.mac_element", + FT_NONE, BASE_NONE, NULL, 0, + "DigestInfo", HFILL }}, + { &hf_pkcs12_macSalt, + { "macSalt", "pkcs12.macSalt", + FT_BYTES, BASE_NONE, NULL, 0, + "OCTET_STRING", HFILL }}, + { &hf_pkcs12_iterations, + { "iterations", "pkcs12.iterations", + FT_INT32, BASE_DEC, NULL, 0, + "INTEGER", HFILL }}, + { &hf_pkcs12_AuthenticatedSafe_item, + { "ContentInfo", "pkcs12.ContentInfo_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_SafeContents_item, + { "SafeBag", "pkcs12.SafeBag_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_bagId, + { "bagId", "pkcs12.bagId", + FT_OID, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_bagValue, + { "bagValue", "pkcs12.bagValue_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_bagAttributes, + { "bagAttributes", "pkcs12.bagAttributes", + FT_UINT32, BASE_DEC, NULL, 0, + "SET_OF_PKCS12Attribute", HFILL }}, + { &hf_pkcs12_bagAttributes_item, + { "PKCS12Attribute", "pkcs12.PKCS12Attribute_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_certId, + { "certId", "pkcs12.certId", + FT_OID, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_certValue, + { "certValue", "pkcs12.certValue_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_crlId, + { "crlId", "pkcs12.crlId", + FT_OID, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_crlValue, + { "crlValue", "pkcs12.crlValue_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_secretTypeId, + { "secretTypeId", "pkcs12.secretTypeId", + FT_OID, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_secretValue, + { "secretValue", "pkcs12.secretValue_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_attrId, + { "attrId", "pkcs12.attrId", + FT_OID, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_attrValues, + { "attrValues", "pkcs12.attrValues", + FT_UINT32, BASE_DEC, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_attrValues_item, + { "attrValues item", "pkcs12.attrValues_item_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_privateKeyVersion, + { "version", "pkcs12.version", + FT_UINT32, BASE_DEC, VALS(pkcs12_Version_vals), 0, + NULL, HFILL }}, + { &hf_pkcs12_privateKeyAlgorithm, + { "privateKeyAlgorithm", "pkcs12.privateKeyAlgorithm_element", + FT_NONE, BASE_NONE, NULL, 0, + "AlgorithmIdentifier", HFILL }}, + { &hf_pkcs12_privateKey, + { "privateKey", "pkcs12.privateKey", + FT_BYTES, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_attributes, + { "attributes", "pkcs12.attributes", + FT_UINT32, BASE_DEC, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_Attributes_item, + { "Attribute", "pkcs12.Attribute_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_encryptionAlgorithm, + { "encryptionAlgorithm", "pkcs12.encryptionAlgorithm_element", + FT_NONE, BASE_NONE, NULL, 0, + "AlgorithmIdentifier", HFILL }}, + { &hf_pkcs12_encryptedData, + { "encryptedData", "pkcs12.encryptedData", + FT_BYTES, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_pkcs12_salt, + { "salt", "pkcs12.salt", + FT_BYTES, BASE_NONE, NULL, 0, + "OCTET_STRING", HFILL }}, + { &hf_pkcs12_iterationCount, + { "iterationCount", "pkcs12.iterationCount", + FT_INT32, BASE_DEC, NULL, 0, + "INTEGER", HFILL }}, + { &hf_pkcs12_saltChoice, + { "salt", "pkcs12.salt", + FT_UINT32, BASE_DEC, VALS(pkcs12_T_saltChoice_vals), 0, + "T_saltChoice", HFILL }}, + { &hf_pkcs12_specified, + { "specified", "pkcs12.specified", + FT_BYTES, BASE_NONE, NULL, 0, + "OCTET_STRING", HFILL }}, + { &hf_pkcs12_otherSource, + { "otherSource", "pkcs12.otherSource_element", + FT_NONE, BASE_NONE, NULL, 0, + "AlgorithmIdentifier", HFILL }}, + { &hf_pkcs12_keyLength, + { "keyLength", "pkcs12.keyLength", + FT_UINT64, BASE_DEC, NULL, 0, + "INTEGER_1_MAX", HFILL }}, + { &hf_pkcs12_prf, + { "prf", "pkcs12.prf_element", + FT_NONE, BASE_NONE, NULL, 0, + "AlgorithmIdentifier", HFILL }}, + { &hf_pkcs12_keyDerivationFunc, + { "keyDerivationFunc", "pkcs12.keyDerivationFunc_element", + FT_NONE, BASE_NONE, NULL, 0, + "AlgorithmIdentifier", HFILL }}, + { &hf_pkcs12_encryptionScheme, + { "encryptionScheme", "pkcs12.encryptionScheme_element", + FT_NONE, BASE_NONE, NULL, 0, + "AlgorithmIdentifier", HFILL }}, + { &hf_pkcs12_messageAuthScheme, + { "messageAuthScheme", "pkcs12.messageAuthScheme_element", + FT_NONE, BASE_NONE, NULL, 0, + "AlgorithmIdentifier", HFILL }}, + }; + + /* List of subtrees */ + static gint *ett[] = { + &ett_decrypted_pbe, + &ett_pkcs12_PFX, + &ett_pkcs12_MacData, + &ett_pkcs12_AuthenticatedSafe, + &ett_pkcs12_SafeContents, + &ett_pkcs12_SafeBag, + &ett_pkcs12_SET_OF_PKCS12Attribute, + &ett_pkcs12_CertBag, + &ett_pkcs12_CRLBag, + &ett_pkcs12_SecretBag, + &ett_pkcs12_PKCS12Attribute, + &ett_pkcs12_T_attrValues, + &ett_pkcs12_PrivateKeyInfo, + &ett_pkcs12_Attributes, + &ett_pkcs12_EncryptedPrivateKeyInfo, + &ett_pkcs12_PBEParameter, + &ett_pkcs12_PBKDF2Params, + &ett_pkcs12_T_saltChoice, + &ett_pkcs12_PBES2Params, + &ett_pkcs12_PBMAC1Params, + }; + static ei_register_info ei[] = { + { &ei_pkcs12_octet_string_expected, { "pkcs12.octet_string_expected", PI_PROTOCOL, PI_WARN, "BER Error: OCTET STRING expected", EXPFILL }}, + }; + + module_t *pkcs12_module; + expert_module_t* expert_pkcs12; + + /* Register protocol */ + proto_pkcs12 = proto_register_protocol(PNAME, PSNAME, PFNAME); + + /* Register fields and subtrees */ + proto_register_field_array(proto_pkcs12, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + expert_pkcs12 = expert_register_protocol(proto_pkcs12); + expert_register_field_array(expert_pkcs12, ei, array_length(ei)); + + /* Register preferences */ + pkcs12_module = prefs_register_protocol(proto_pkcs12, NULL); + + prefs_register_string_preference(pkcs12_module, "password", + "Password to decrypt the file with", + "The password to used to decrypt the encrypted elements within" + " the PKCS#12 file", &password); + + prefs_register_bool_preference(pkcs12_module, "try_null_password", + "Try to decrypt with a empty password", + "Whether to try and decrypt the encrypted data within the" + " PKCS#12 with a NULL password", &try_null_password); + + register_ber_syntax_dissector("PKCS#12", proto_pkcs12, dissect_PFX_PDU); + register_ber_oid_syntax(".p12", NULL, "PKCS#12"); + register_ber_oid_syntax(".pfx", NULL, "PKCS#12"); +} + + +/*--- proto_reg_handoff_pkcs12 -------------------------------------------*/ +void proto_reg_handoff_pkcs12(void) { + register_ber_oid_dissector("1.2.840.113549.1.12.10.1.1", dissect_KeyBag_PDU, proto_pkcs12, "keyBag"); + register_ber_oid_dissector("1.2.840.113549.1.12.10.1.2", dissect_PKCS8ShroudedKeyBag_PDU, proto_pkcs12, "pkcs8ShroudedKeyBag"); + register_ber_oid_dissector("1.2.840.113549.1.12.10.1.3", dissect_CertBag_PDU, proto_pkcs12, "certBag"); + register_ber_oid_dissector("1.2.840.113549.1.12.10.1.4", dissect_SecretBag_PDU, proto_pkcs12, "secretBag"); + register_ber_oid_dissector("1.2.840.113549.1.12.10.1.5", dissect_CRLBag_PDU, proto_pkcs12, "crlBag"); + register_ber_oid_dissector("1.2.840.113549.1.12.10.1.6", dissect_SafeContents_PDU, proto_pkcs12, "safeContentsBag"); + register_ber_oid_dissector("2.16.840.1.113730.3.1.216", dissect_PFX_PDU, proto_pkcs12, "pkcs-9-at-PKCS12"); + register_ber_oid_dissector("1.2.840.113549.1.9.25.2", dissect_EncryptedPrivateKeyInfo_PDU, proto_pkcs12, "pkcs-9-at-encryptedPrivateKeyInfo"); + register_ber_oid_dissector("1.2.840.113549.1.12.1.1", dissect_PBEParameter_PDU, proto_pkcs12, "pbeWithSHAAnd128BitRC4"); + register_ber_oid_dissector("1.2.840.113549.1.12.1.2", dissect_PBEParameter_PDU, proto_pkcs12, "pbeWithSHAAnd40BitRC4"); + register_ber_oid_dissector("1.2.840.113549.1.12.1.3", dissect_PBEParameter_PDU, proto_pkcs12, "pbeWithSHAAnd3-KeyTripleDES-CBC"); + register_ber_oid_dissector("1.2.840.113549.1.12.1.4", dissect_PBEParameter_PDU, proto_pkcs12, "pbeWithSHAAnd2-KeyTripleDES-CBC"); + register_ber_oid_dissector("1.2.840.113549.1.12.1.5", dissect_PBEParameter_PDU, proto_pkcs12, "pbeWithSHAAnd128BitRC2-CBC"); + register_ber_oid_dissector("1.2.840.113549.1.12.1.6", dissect_PBEParameter_PDU, proto_pkcs12, "pbeWithSHAAnd40BitRC2-CBC"); + register_ber_oid_dissector("1.2.840.113549.1.5.1", dissect_PBEParameter_PDU, proto_pkcs12, "pbeWithMD2AndDES-CBC"); + register_ber_oid_dissector("1.2.840.113549.1.5.3", dissect_PBEParameter_PDU, proto_pkcs12, "pbeWithMD5AndDES-CBC"); + register_ber_oid_dissector("1.2.840.113549.1.5.4", dissect_PBEParameter_PDU, proto_pkcs12, "pbeWithMD2AndRC2-CBC"); + register_ber_oid_dissector("1.2.840.113549.1.5.6", dissect_PBEParameter_PDU, proto_pkcs12, "pbeWithMD5AndRC2-CBC"); + register_ber_oid_dissector("1.2.840.113549.1.5.10", dissect_PBEParameter_PDU, proto_pkcs12, "pbeWithSHA1AndDES-CBC"); + register_ber_oid_dissector("1.2.840.113549.1.5.11", dissect_PBEParameter_PDU, proto_pkcs12, "pbeWithSHA1AndRC2-CBC"); + register_ber_oid_dissector("1.2.840.113549.1.5.12", dissect_PBKDF2Params_PDU, proto_pkcs12, "id-PBKDF2"); + register_ber_oid_dissector("1.2.840.113549.1.5.13", dissect_PBES2Params_PDU, proto_pkcs12, "id-PBES2"); + register_ber_oid_dissector("1.2.840.113549.1.5.14", dissect_PBMAC1Params_PDU, proto_pkcs12, "id-PBMAC1"); + + + register_ber_oid_dissector("1.2.840.113549.1.9.22.1", dissect_X509Certificate_OCTETSTRING_PDU, proto_pkcs12, "x509Certificate"); + +} + |