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dst.h
/* * Copyright (C) Internet Systems Consortium, Inc. ("ISC") * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, you can obtain one at https://mozilla.org/MPL/2.0/. * * See the COPYRIGHT file distributed with this work for additional * information regarding copyright ownership. */ #ifndef DST_DST_H #define DST_DST_H 1 /*! \file dst/dst.h */ #include <inttypes.h> #include <stdbool.h> #include <isc/lang.h> #include <isc/stdtime.h> #include <dns/types.h> #include <dns/log.h> #include <dns/name.h> #include <dns/secalg.h> #include <dns/ds.h> #include <dns/dsdigest.h> #include <dst/gssapi.h> ISC_LANG_BEGINDECLS /*** *** Types ***/ /*% * The dst_key structure is opaque. Applications should use the accessor * functions provided to retrieve key attributes. If an application needs * to set attributes, new accessor functions will be written. */ typedef struct dst_key dst_key_t; typedef struct dst_context dst_context_t; /* DST algorithm codes */ #define DST_ALG_UNKNOWN 0 #define DST_ALG_RSAMD5 1 #define DST_ALG_RSA DST_ALG_RSAMD5 /*%< backwards compatibility */ #define DST_ALG_DH 2 #define DST_ALG_DSA 3 #define DST_ALG_ECC 4 #define DST_ALG_RSASHA1 5 #define DST_ALG_NSEC3DSA 6 #define DST_ALG_NSEC3RSASHA1 7 #define DST_ALG_RSASHA256 8 #define DST_ALG_RSASHA512 10 #define DST_ALG_ECCGOST 12 #define DST_ALG_ECDSA256 13 #define DST_ALG_ECDSA384 14 #define DST_ALG_ED25519 15 #define DST_ALG_ED448 16 #define DST_ALG_HMACMD5 157 #define DST_ALG_GSSAPI 160 #define DST_ALG_HMACSHA1 161 /* XXXMPA */ #define DST_ALG_HMACSHA224 162 /* XXXMPA */ #define DST_ALG_HMACSHA256 163 /* XXXMPA */ #define DST_ALG_HMACSHA384 164 /* XXXMPA */ #define DST_ALG_HMACSHA512 165 /* XXXMPA */ #define DST_ALG_INDIRECT 252 #define DST_ALG_PRIVATE 254 #define DST_MAX_ALGS 256 /*% A buffer of this size is large enough to hold any key */ #define DST_KEY_MAXSIZE 1280 /*% * A buffer of this size is large enough to hold the textual representation * of any key */ #define DST_KEY_MAXTEXTSIZE 2048 /*% 'Type' for dst_read_key() */ #define DST_TYPE_KEY 0x1000000 /* KEY key */ #define DST_TYPE_PRIVATE 0x2000000 #define DST_TYPE_PUBLIC 0x4000000 /* Key timing metadata definitions */ #define DST_TIME_CREATED 0 #define DST_TIME_PUBLISH 1 #define DST_TIME_ACTIVATE 2 #define DST_TIME_REVOKE 3 #define DST_TIME_INACTIVE 4 #define DST_TIME_DELETE 5 #define DST_TIME_DSPUBLISH 6 #define DST_TIME_SYNCPUBLISH 7 #define DST_TIME_SYNCDELETE 8 #define DST_MAX_TIMES 8 /* Numeric metadata definitions */ #define DST_NUM_PREDECESSOR 0 #define DST_NUM_SUCCESSOR 1 #define DST_NUM_MAXTTL 2 #define DST_NUM_ROLLPERIOD 3 #define DST_MAX_NUMERIC 3 /* * Current format version number of the private key parser. * * When parsing a key file with the same major number but a higher minor * number, the key parser will ignore any fields it does not recognize. * Thus, DST_MINOR_VERSION should be incremented whenever new * fields are added to the private key file (such as new metadata). * * When rewriting these keys, those fields will be dropped, and the * format version set back to the current one.. * * When a key is seen with a higher major number, the key parser will * reject it as invalid. Thus, DST_MAJOR_VERSION should be incremented * and DST_MINOR_VERSION set to zero whenever there is a format change * which is not backward compatible to previous versions of the dst_key * parser, such as change in the syntax of an existing field, the removal * of a currently mandatory field, or a new field added which would * alter the functioning of the key if it were absent. */ #define DST_MAJOR_VERSION 1 #define DST_MINOR_VERSION 3 /*** *** Functions ***/ isc_result_t dst_lib_init(isc_mem_t *mctx, isc_entropy_t *ectx, unsigned int eflags); isc_result_t dst_lib_init2(isc_mem_t *mctx, isc_entropy_t *ectx, const char *engine, unsigned int eflags); /*%< * Initializes the DST subsystem. * * Requires: * \li "mctx" is a valid memory context * \li "ectx" is a valid entropy context * * Returns: * \li ISC_R_SUCCESS * \li ISC_R_NOMEMORY * \li DST_R_NOENGINE * * Ensures: * \li DST is properly initialized. */ void dst_lib_destroy(void); /*%< * Releases all resources allocated by DST. */ isc_result_t dst_random_getdata(void *data, unsigned int length, unsigned int *returned, unsigned int flags); /*%< * Gets random data from the random generator provided by the * crypto library, if BIND was built with --enable-crypto-rand. * * See isc_entropy_getdata() for parameter usage. Normally when * this function is available, it will be set up as a hook in the * entropy context, so that isc_entropy_getdata() is a front-end to * this function. * * Returns: * \li ISC_R_SUCCESS on success * \li ISC_R_NOTIMPLEMENTED if BIND is built with --disable-crypto-rand * \li DST_R_OPENSSLFAILURE, DST_R_CRYPTOFAILURE, or other codes on error */ bool dst_algorithm_supported(unsigned int alg); /*%< * Checks that a given algorithm is supported by DST. * * Returns: * \li true * \li false */ bool dst_ds_digest_supported(unsigned int digest_type); /*%< * Checks that a given digest algorithm is supported by DST. * * Returns: * \li true * \li false */ isc_result_t dst_context_create(dst_key_t *key, isc_mem_t *mctx, dst_context_t **dctxp); isc_result_t dst_context_create2(dst_key_t *key, isc_mem_t *mctx, isc_logcategory_t *category, dst_context_t **dctxp); isc_result_t dst_context_create3(dst_key_t *key, isc_mem_t *mctx, isc_logcategory_t *category, bool useforsigning, dst_context_t **dctxp); isc_result_t dst_context_create4(dst_key_t *key, isc_mem_t *mctx, isc_logcategory_t *category, bool useforsigning, int maxbits, dst_context_t **dctxp); /*%< * Creates a context to be used for a sign or verify operation. * * Requires: * \li "key" is a valid key. * \li "mctx" is a valid memory context. * \li dctxp != NULL && *dctxp == NULL * * Returns: * \li ISC_R_SUCCESS * \li ISC_R_NOMEMORY * * Ensures: * \li *dctxp will contain a usable context. */ void dst_context_destroy(dst_context_t **dctxp); /*%< * Destroys all memory associated with a context. * * Requires: * \li *dctxp != NULL && *dctxp == NULL * * Ensures: * \li *dctxp == NULL */ isc_result_t dst_context_adddata(dst_context_t *dctx, const isc_region_t *data); /*%< * Incrementally adds data to the context to be used in a sign or verify * operation. * * Requires: * \li "dctx" is a valid context * \li "data" is a valid region * * Returns: * \li ISC_R_SUCCESS * \li DST_R_SIGNFAILURE * \li all other errors indicate failure */ isc_result_t dst_context_sign(dst_context_t *dctx, isc_buffer_t *sig); /*%< * Computes a signature using the data and key stored in the context. * * Requires: * \li "dctx" is a valid context. * \li "sig" is a valid buffer. * * Returns: * \li ISC_R_SUCCESS * \li DST_R_VERIFYFAILURE * \li all other errors indicate failure * * Ensures: * \li "sig" will contain the signature */ isc_result_t dst_context_verify(dst_context_t *dctx, isc_region_t *sig); isc_result_t dst_context_verify2(dst_context_t *dctx, unsigned int maxbits, isc_region_t *sig); /*%< * Verifies the signature using the data and key stored in the context. * * 'maxbits' specifies the maximum number of bits permitted in the RSA * exponent. * * Requires: * \li "dctx" is a valid context. * \li "sig" is a valid region. * * Returns: * \li ISC_R_SUCCESS * \li all other errors indicate failure * * Ensures: * \li "sig" will contain the signature */ isc_result_t dst_key_computesecret(const dst_key_t *pub, const dst_key_t *priv, isc_buffer_t *secret); /*%< * Computes a shared secret from two (Diffie-Hellman) keys. * * Requires: * \li "pub" is a valid key that can be used to derive a shared secret * \li "priv" is a valid private key that can be used to derive a shared secret * \li "secret" is a valid buffer * * Returns: * \li ISC_R_SUCCESS * \li any other result indicates failure * * Ensures: * \li If successful, secret will contain the derived shared secret. */ isc_result_t dst_key_getfilename(dns_name_t *name, dns_keytag_t id, unsigned int alg, int type, const char *directory, isc_mem_t *mctx, isc_buffer_t *buf); /*%< * Generates a key filename for the name, algorithm, and * id, and places it in the buffer 'buf'. If directory is NULL, the * current directory is assumed. * * Requires: * \li "name" is a valid absolute dns name. * \li "id" is a valid key tag identifier. * \li "alg" is a supported key algorithm. * \li "type" is DST_TYPE_PUBLIC, DST_TYPE_PRIVATE, or the bitwise union. * DST_TYPE_KEY look for a KEY record otherwise DNSKEY * \li "mctx" is a valid memory context. * \li "buf" is not NULL. * * Returns: * \li ISC_R_SUCCESS * \li any other result indicates failure */ isc_result_t dst_key_fromfile(dns_name_t *name, dns_keytag_t id, unsigned int alg, int type, const char *directory, isc_mem_t *mctx, dst_key_t **keyp); /*%< * Reads a key from permanent storage. The key can either be a public or * private key, and is specified by name, algorithm, and id. If a private key * is specified, the public key must also be present. If directory is NULL, * the current directory is assumed. * * Requires: * \li "name" is a valid absolute dns name. * \li "id" is a valid key tag identifier. * \li "alg" is a supported key algorithm. * \li "type" is DST_TYPE_PUBLIC, DST_TYPE_PRIVATE, or the bitwise union. * DST_TYPE_KEY look for a KEY record otherwise DNSKEY * \li "mctx" is a valid memory context. * \li "keyp" is not NULL and "*keyp" is NULL. * * Returns: * \li ISC_R_SUCCESS * \li any other result indicates failure * * Ensures: * \li If successful, *keyp will contain a valid key. */ isc_result_t dst_key_fromnamedfile(const char *filename, const char *dirname, int type, isc_mem_t *mctx, dst_key_t **keyp); /*%< * Reads a key from permanent storage. The key can either be a public or * key, and is specified by filename. If a private key is specified, the * public key must also be present. * * If 'dirname' is not NULL, and 'filename' is a relative path, * then the file is looked up relative to the given directory. * If 'filename' is an absolute path, 'dirname' is ignored. * * Requires: * \li "filename" is not NULL * \li "type" is DST_TYPE_PUBLIC, DST_TYPE_PRIVATE, or the bitwise union * DST_TYPE_KEY look for a KEY record otherwise DNSKEY * \li "mctx" is a valid memory context * \li "keyp" is not NULL and "*keyp" is NULL. * * Returns: * \li ISC_R_SUCCESS * \li any other result indicates failure * * Ensures: * \li If successful, *keyp will contain a valid key. */ isc_result_t dst_key_read_public(const char *filename, int type, isc_mem_t *mctx, dst_key_t **keyp); /*%< * Reads a public key from permanent storage. The key must be a public key. * * Requires: * \li "filename" is not NULL * \li "type" is DST_TYPE_KEY look for a KEY record otherwise DNSKEY * \li "mctx" is a valid memory context * \li "keyp" is not NULL and "*keyp" is NULL. * * Returns: * \li ISC_R_SUCCESS * \li DST_R_BADKEYTYPE if the key type is not the expected one * \li ISC_R_UNEXPECTEDTOKEN if the file can not be parsed as a public key * \li any other result indicates failure * * Ensures: * \li If successful, *keyp will contain a valid key. */ isc_result_t dst_key_tofile(const dst_key_t *key, int type, const char *directory); /*%< * Writes a key to permanent storage. The key can either be a public or * private key. Public keys are written in DNS format and private keys * are written as a set of base64 encoded values. If directory is NULL, * the current directory is assumed. * * Requires: * \li "key" is a valid key. * \li "type" is DST_TYPE_PUBLIC, DST_TYPE_PRIVATE, or the bitwise union * * Returns: * \li ISC_R_SUCCESS * \li any other result indicates failure */ isc_result_t dst_key_fromdns_ex(dns_name_t *name, dns_rdataclass_t rdclass, isc_buffer_t *source, isc_mem_t *mctx, bool no_rdata, dst_key_t **keyp); isc_result_t dst_key_fromdns(dns_name_t *name, dns_rdataclass_t rdclass, isc_buffer_t *source, isc_mem_t *mctx, dst_key_t **keyp); /*%< * Converts a DNS KEY record into a DST key. * * Requires: * \li "name" is a valid absolute dns name. * \li "source" is a valid buffer. There must be at least 4 bytes available. * \li "mctx" is a valid memory context. * \li "keyp" is not NULL and "*keyp" is NULL. * * Returns: * \li ISC_R_SUCCESS * \li any other result indicates failure * * Ensures: * \li If successful, *keyp will contain a valid key, and the consumed * pointer in data will be advanced. */ isc_result_t dst_key_todns(const dst_key_t *key, isc_buffer_t *target); /*%< * Converts a DST key into a DNS KEY record. * * Requires: * \li "key" is a valid key. * \li "target" is a valid buffer. There must be at least 4 bytes unused. * * Returns: * \li ISC_R_SUCCESS * \li any other result indicates failure * * Ensures: * \li If successful, the used pointer in 'target' is advanced by at least 4. */ isc_result_t dst_key_frombuffer(dns_name_t *name, unsigned int alg, unsigned int flags, unsigned int protocol, dns_rdataclass_t rdclass, isc_buffer_t *source, isc_mem_t *mctx, dst_key_t **keyp); /*%< * Converts a buffer containing DNS KEY RDATA into a DST key. * * Requires: *\li "name" is a valid absolute dns name. *\li "alg" is a supported key algorithm. *\li "source" is a valid buffer. *\li "mctx" is a valid memory context. *\li "keyp" is not NULL and "*keyp" is NULL. * * Returns: *\li ISC_R_SUCCESS * \li any other result indicates failure * * Ensures: *\li If successful, *keyp will contain a valid key, and the consumed * pointer in source will be advanced. */ isc_result_t dst_key_tobuffer(const dst_key_t *key, isc_buffer_t *target); /*%< * Converts a DST key into DNS KEY RDATA format. * * Requires: *\li "key" is a valid key. *\li "target" is a valid buffer. * * Returns: *\li ISC_R_SUCCESS * \li any other result indicates failure * * Ensures: *\li If successful, the used pointer in 'target' is advanced. */ isc_result_t dst_key_privatefrombuffer(dst_key_t *key, isc_buffer_t *buffer); /*%< * Converts a public key into a private key, reading the private key * information from the buffer. The buffer should contain the same data * as the .private key file would. * * Requires: *\li "key" is a valid public key. *\li "buffer" is not NULL. * * Returns: *\li ISC_R_SUCCESS * \li any other result indicates failure * * Ensures: *\li If successful, key will contain a valid private key. */ gss_ctx_id_t dst_key_getgssctx(const dst_key_t *key); /*%< * Returns the opaque key data. * Be cautions when using this value unless you know what you are doing. * * Requires: *\li "key" is not NULL. * * Returns: *\li gssctx key data, possibly NULL. */ isc_result_t dst_key_fromgssapi(dns_name_t *name, gss_ctx_id_t gssctx, isc_mem_t *mctx, dst_key_t **keyp, isc_region_t *intoken); /*%< * Converts a GSSAPI opaque context id into a DST key. * * Requires: *\li "name" is a valid absolute dns name. *\li "gssctx" is a GSSAPI context id. *\li "mctx" is a valid memory context. *\li "keyp" is not NULL and "*keyp" is NULL. * * Returns: *\li ISC_R_SUCCESS * \li any other result indicates failure * * Ensures: *\li If successful, *keyp will contain a valid key and be responsible for * the context id. */ #ifdef DST_KEY_INTERNAL isc_result_t dst_key_buildinternal(dns_name_t *name, unsigned int alg, unsigned int bits, unsigned int flags, unsigned int protocol, dns_rdataclass_t rdclass, void *data, isc_mem_t *mctx, dst_key_t **keyp); #endif isc_result_t dst_key_fromlabel(dns_name_t *name, int alg, unsigned int flags, unsigned int protocol, dns_rdataclass_t rdclass, const char *engine, const char *label, const char *pin, isc_mem_t *mctx, dst_key_t **keyp); isc_result_t dst_key_generate(dns_name_t *name, unsigned int alg, unsigned int bits, unsigned int param, unsigned int flags, unsigned int protocol, dns_rdataclass_t rdclass, isc_mem_t *mctx, dst_key_t **keyp); isc_result_t dst_key_generate2(dns_name_t *name, unsigned int alg, unsigned int bits, unsigned int param, unsigned int flags, unsigned int protocol, dns_rdataclass_t rdclass, isc_mem_t *mctx, dst_key_t **keyp, void (*callback)(int)); /*%< * Generate a DST key (or keypair) with the supplied parameters. The * interpretation of the "param" field depends on the algorithm: * \code * RSA: exponent * 0 use exponent 3 * !0 use Fermat4 (2^16 + 1) * DH: generator * 0 default - use well known prime if bits == 768 or 1024, * otherwise use 2 as the generator. * !0 use this value as the generator. * DSA: unused * HMACMD5: entropy * 0 default - require good entropy * !0 lack of good entropy is ok *\endcode * * Requires: *\li "name" is a valid absolute dns name. *\li "keyp" is not NULL and "*keyp" is NULL. * * Returns: *\li ISC_R_SUCCESS * \li any other result indicates failure * * Ensures: *\li If successful, *keyp will contain a valid key. */ bool dst_key_compare(const dst_key_t *key1, const dst_key_t *key2); /*%< * Compares two DST keys. Returns true if they match, false otherwise. * * Keys ARE NOT considered to match if one of them is the revoked version * of the other. * * Requires: *\li "key1" is a valid key. *\li "key2" is a valid key. * * Returns: *\li true * \li false */ bool dst_key_pubcompare(const dst_key_t *key1, const dst_key_t *key2, bool match_revoked_key); /*%< * Compares only the public portions of two DST keys. Returns true * if they match, false otherwise. This allows us, for example, to * determine whether a public key found in a zone matches up with a * key pair found on disk. * * If match_revoked_key is TRUE, then keys ARE considered to match if one * of them is the revoked version of the other. Otherwise, they are not. * * Requires: *\li "key1" is a valid key. *\li "key2" is a valid key. * * Returns: *\li true * \li false */ bool dst_key_paramcompare(const dst_key_t *key1, const dst_key_t *key2); /*%< * Compares the parameters of two DST keys. This is used to determine if * two (Diffie-Hellman) keys can be used to derive a shared secret. * * Requires: *\li "key1" is a valid key. *\li "key2" is a valid key. * * Returns: *\li true * \li false */ void dst_key_attach(dst_key_t *source, dst_key_t **target); /* * Attach to a existing key increasing the reference count. * * Requires: *\li 'source' to be a valid key. *\li 'target' to be non-NULL and '*target' to be NULL. */ void dst_key_free(dst_key_t **keyp); /*%< * Decrement the key's reference counter and, when it reaches zero, * release all memory associated with the key. * * Requires: *\li "keyp" is not NULL and "*keyp" is a valid key. *\li reference counter greater than zero. * * Ensures: *\li All memory associated with "*keyp" will be freed. *\li *keyp == NULL */ /*%< * Accessor functions to obtain key fields. * * Require: *\li "key" is a valid key. */ dns_name_t * dst_key_name(const dst_key_t *key); unsigned int dst_key_size(const dst_key_t *key); unsigned int dst_key_proto(const dst_key_t *key); unsigned int dst_key_alg(const dst_key_t *key); uint32_t dst_key_flags(const dst_key_t *key); dns_keytag_t dst_key_id(const dst_key_t *key); dns_keytag_t dst_key_rid(const dst_key_t *key); dns_rdataclass_t dst_key_class(const dst_key_t *key); bool dst_key_isprivate(const dst_key_t *key); bool dst_key_iszonekey(const dst_key_t *key); bool dst_key_isnullkey(const dst_key_t *key); isc_result_t dst_key_buildfilename(const dst_key_t *key, int type, const char *directory, isc_buffer_t *out); /*%< * Generates the filename used by dst to store the specified key. * If directory is NULL, the current directory is assumed. * * Requires: *\li "key" is a valid key *\li "type" is either DST_TYPE_PUBLIC, DST_TYPE_PRIVATE, or 0 for no suffix. *\li "out" is a valid buffer * * Ensures: *\li the file name will be written to "out", and the used pointer will * be advanced. */ isc_result_t dst_key_sigsize(const dst_key_t *key, unsigned int *n); /*%< * Computes the size of a signature generated by the given key. * * Requires: *\li "key" is a valid key. *\li "n" is not NULL * * Returns: *\li #ISC_R_SUCCESS *\li DST_R_UNSUPPORTEDALG * * Ensures: *\li "n" stores the size of a generated signature */ isc_result_t dst_key_secretsize(const dst_key_t *key, unsigned int *n); /*%< * Computes the size of a shared secret generated by the given key. * * Requires: *\li "key" is a valid key. *\li "n" is not NULL * * Returns: *\li #ISC_R_SUCCESS *\li DST_R_UNSUPPORTEDALG * * Ensures: *\li "n" stores the size of a generated shared secret */ uint16_t dst_region_computeid(const isc_region_t *source, unsigned int alg); uint16_t dst_region_computerid(const isc_region_t *source, unsigned int alg); /*%< * Computes the (revoked) key id of the key stored in the provided * region with the given algorithm. * * Requires: *\li "source" contains a valid, non-NULL region. * * Returns: *\li the key id */ uint16_t dst_key_getbits(const dst_key_t *key); /*%< * Get the number of digest bits required (0 == MAX). * * Requires: * "key" is a valid key. */ void dst_key_setbits(dst_key_t *key, uint16_t bits); /*%< * Set the number of digest bits required (0 == MAX). * * Requires: * "key" is a valid key. */ void dst_key_setttl(dst_key_t *key, dns_ttl_t ttl); /*%< * Set the default TTL to use when converting the key * to a KEY or DNSKEY RR. * * Requires: * "key" is a valid key. */ dns_ttl_t dst_key_getttl(const dst_key_t *key); /*%< * Get the default TTL to use when converting the key * to a KEY or DNSKEY RR. * * Requires: * "key" is a valid key. */ isc_result_t dst_key_setflags(dst_key_t *key, uint32_t flags); /* * Set the key flags, and recompute the key ID. * * Requires: * "key" is a valid key. */ isc_result_t dst_key_getnum(const dst_key_t *key, int type, uint32_t *valuep); /*%< * Get a member of the numeric metadata array and place it in '*valuep'. * * Requires: * "key" is a valid key. * "type" is no larger than DST_MAX_NUMERIC * "timep" is not null. */ void dst_key_setnum(dst_key_t *key, int type, uint32_t value); /*%< * Set a member of the numeric metadata array. * * Requires: * "key" is a valid key. * "type" is no larger than DST_MAX_NUMERIC */ void dst_key_unsetnum(dst_key_t *key, int type); /*%< * Flag a member of the numeric metadata array as "not set". * * Requires: * "key" is a valid key. * "type" is no larger than DST_MAX_NUMERIC */ isc_result_t dst_key_gettime(const dst_key_t *key, int type, isc_stdtime_t *timep); /*%< * Get a member of the timing metadata array and place it in '*timep'. * * Requires: * "key" is a valid key. * "type" is no larger than DST_MAX_TIMES * "timep" is not null. */ void dst_key_settime(dst_key_t *key, int type, isc_stdtime_t when); /*%< * Set a member of the timing metadata array. * * Requires: * "key" is a valid key. * "type" is no larger than DST_MAX_TIMES */ void dst_key_unsettime(dst_key_t *key, int type); /*%< * Flag a member of the timing metadata array as "not set". * * Requires: * "key" is a valid key. * "type" is no larger than DST_MAX_TIMES */ isc_result_t dst_key_getprivateformat(const dst_key_t *key, int *majorp, int *minorp); /*%< * Get the private key format version number. (If the key does not have * a private key associated with it, the version will be 0.0.) The major * version number is placed in '*majorp', and the minor version number in * '*minorp'. * * Requires: * "key" is a valid key. * "majorp" is not NULL. * "minorp" is not NULL. */ void dst_key_setprivateformat(dst_key_t *key, int major, int minor); /*%< * Set the private key format version number. * * Requires: * "key" is a valid key. */ #define DST_KEY_FORMATSIZE (DNS_NAME_FORMATSIZE + DNS_SECALG_FORMATSIZE + 7) void dst_key_format(const dst_key_t *key, char *cp, unsigned int size); /*%< * Write the uniquely identifying information about the key (name, * algorithm, key ID) into a string 'cp' of size 'size'. */ isc_buffer_t * dst_key_tkeytoken(const dst_key_t *key); /*%< * Return the token from the TKEY request, if any. If this key was * not negotiated via TKEY, return NULL. * * Requires: * "key" is a valid key. */ isc_result_t dst_key_dump(dst_key_t *key, isc_mem_t *mctx, char **buffer, int *length); /*%< * Allocate 'buffer' and dump the key into it in base64 format. The buffer * is not NUL terminated. The length of the buffer is returned in *length. * * 'buffer' needs to be freed using isc_mem_put(mctx, buffer, length); * * Requires: * 'buffer' to be non NULL and *buffer to be NULL. * 'length' to be non NULL and *length to be zero. * * Returns: * ISC_R_SUCCESS * ISC_R_NOMEMORY * ISC_R_NOTIMPLEMENTED * others. */ isc_result_t dst_key_restore(dns_name_t *name, unsigned int alg, unsigned int flags, unsigned int protocol, dns_rdataclass_t rdclass, isc_mem_t *mctx, const char *keystr, dst_key_t **keyp); bool dst_key_inactive(const dst_key_t *key); /*%< * Determines if the private key is missing due the key being deemed inactive. * * Requires: * 'key' to be valid. */ void dst_key_setinactive(dst_key_t *key, bool inactive); /*%< * Set key inactive state. * * Requires: * 'key' to be valid. */ void dst_key_setexternal(dst_key_t *key, bool value); bool dst_key_isexternal(dst_key_t *key); ISC_LANG_ENDDECLS #endif /* DST_DST_H */
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