diff options
Diffstat (limited to 'contrib/bind9/lib/dns/opensslrsa_link.c')
| -rw-r--r-- | contrib/bind9/lib/dns/opensslrsa_link.c | 567 |
1 files changed, 0 insertions, 567 deletions
diff --git a/contrib/bind9/lib/dns/opensslrsa_link.c b/contrib/bind9/lib/dns/opensslrsa_link.c deleted file mode 100644 index 0d4426bfabef..000000000000 --- a/contrib/bind9/lib/dns/opensslrsa_link.c +++ /dev/null @@ -1,567 +0,0 @@ -/* - * Copyright (C) 2004 Internet Systems Consortium, Inc. ("ISC") - * Copyright (C) 2000-2003 Internet Software Consortium. - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH - * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, - * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM - * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE - * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR - * PERFORMANCE OF THIS SOFTWARE. - */ - -/* - * Principal Author: Brian Wellington - * $Id: opensslrsa_link.c,v 1.1.4.1 2004/12/09 04:07:18 marka Exp $ - */ -#ifdef OPENSSL - -#include <config.h> - -#include <isc/entropy.h> -#include <isc/md5.h> -#include <isc/sha1.h> -#include <isc/mem.h> -#include <isc/string.h> -#include <isc/util.h> - -#include <dst/result.h> - -#include "dst_internal.h" -#include "dst_openssl.h" -#include "dst_parse.h" - -#include <openssl/err.h> -#include <openssl/objects.h> -#include <openssl/rsa.h> - - /* - * XXXMPA Temporarially disable RSA_BLINDING as it requires - * good quality random data that cannot currently be guarenteed. - * XXXMPA Find which versions of openssl use pseudo random data - * and set RSA_FLAG_BLINDING for those. - */ - -#if 0 -#if OPENSSL_VERSION_NUMBER < 0x0090601fL -#define SET_FLAGS(rsa) \ - do { \ - (rsa)->flags &= ~(RSA_FLAG_CACHE_PUBLIC | RSA_FLAG_CACHE_PRIVATE); \ - (rsa)->flags |= RSA_FLAG_BLINDING; \ - } while (0) -#else -#define SET_FLAGS(rsa) \ - do { \ - (rsa)->flags |= RSA_FLAG_BLINDING; \ - } while (0) -#endif -#endif - -#if OPENSSL_VERSION_NUMBER < 0x0090601fL -#define SET_FLAGS(rsa) \ - do { \ - (rsa)->flags &= ~(RSA_FLAG_CACHE_PUBLIC | RSA_FLAG_CACHE_PRIVATE); \ - (rsa)->flags &= ~RSA_FLAG_BLINDING; \ - } while (0) -#else -#define SET_FLAGS(rsa) \ - do { \ - (rsa)->flags &= ~RSA_FLAG_BLINDING; \ - } while (0) -#endif - -static isc_result_t opensslrsa_todns(const dst_key_t *key, isc_buffer_t *data); - -static isc_result_t -opensslrsa_createctx(dst_key_t *key, dst_context_t *dctx) { - UNUSED(key); - REQUIRE(dctx->key->key_alg == DST_ALG_RSAMD5 || - dctx->key->key_alg == DST_ALG_RSASHA1); - - if (dctx->key->key_alg == DST_ALG_RSAMD5) { - isc_md5_t *md5ctx; - - md5ctx = isc_mem_get(dctx->mctx, sizeof(isc_md5_t)); - isc_md5_init(md5ctx); - dctx->opaque = md5ctx; - } else { - isc_sha1_t *sha1ctx; - - sha1ctx = isc_mem_get(dctx->mctx, sizeof(isc_sha1_t)); - isc_sha1_init(sha1ctx); - dctx->opaque = sha1ctx; - } - - return (ISC_R_SUCCESS); -} - -static void -opensslrsa_destroyctx(dst_context_t *dctx) { - REQUIRE(dctx->key->key_alg == DST_ALG_RSAMD5 || - dctx->key->key_alg == DST_ALG_RSASHA1); - - if (dctx->key->key_alg == DST_ALG_RSAMD5) { - isc_md5_t *md5ctx = dctx->opaque; - - if (md5ctx != NULL) { - isc_md5_invalidate(md5ctx); - isc_mem_put(dctx->mctx, md5ctx, sizeof(isc_md5_t)); - } - } else { - isc_sha1_t *sha1ctx = dctx->opaque; - - if (sha1ctx != NULL) { - isc_sha1_invalidate(sha1ctx); - isc_mem_put(dctx->mctx, sha1ctx, sizeof(isc_sha1_t)); - } - } - dctx->opaque = NULL; -} - -static isc_result_t -opensslrsa_adddata(dst_context_t *dctx, const isc_region_t *data) { - REQUIRE(dctx->key->key_alg == DST_ALG_RSAMD5 || - dctx->key->key_alg == DST_ALG_RSASHA1); - - if (dctx->key->key_alg == DST_ALG_RSAMD5) { - isc_md5_t *md5ctx = dctx->opaque; - isc_md5_update(md5ctx, data->base, data->length); - } else { - isc_sha1_t *sha1ctx = dctx->opaque; - isc_sha1_update(sha1ctx, data->base, data->length); - } - return (ISC_R_SUCCESS); -} - -static isc_result_t -opensslrsa_sign(dst_context_t *dctx, isc_buffer_t *sig) { - dst_key_t *key = dctx->key; - RSA *rsa = key->opaque; - isc_region_t r; - /* note: ISC_SHA1_DIGESTLENGTH > ISC_MD5_DIGESTLENGTH */ - unsigned char digest[ISC_SHA1_DIGESTLENGTH]; - unsigned int siglen = 0; - int status; - int type; - unsigned int digestlen; - char *message; - unsigned long err; - const char* file; - int line; - - REQUIRE(dctx->key->key_alg == DST_ALG_RSAMD5 || - dctx->key->key_alg == DST_ALG_RSASHA1); - - isc_buffer_availableregion(sig, &r); - - if (r.length < (unsigned int) RSA_size(rsa)) - return (ISC_R_NOSPACE); - - if (dctx->key->key_alg == DST_ALG_RSAMD5) { - isc_md5_t *md5ctx = dctx->opaque; - isc_md5_final(md5ctx, digest); - type = NID_md5; - digestlen = ISC_MD5_DIGESTLENGTH; - } else { - isc_sha1_t *sha1ctx = dctx->opaque; - isc_sha1_final(sha1ctx, digest); - type = NID_sha1; - digestlen = ISC_SHA1_DIGESTLENGTH; - } - - status = RSA_sign(type, digest, digestlen, r.base, &siglen, rsa); - if (status == 0) { - err = ERR_peek_error_line(&file, &line); - if (err != 0U) { - message = ERR_error_string(err, NULL); - fprintf(stderr, "%s:%s:%d\n", message, - file ? file : "", line); - } - return (dst__openssl_toresult(DST_R_OPENSSLFAILURE)); - } - - isc_buffer_add(sig, siglen); - - return (ISC_R_SUCCESS); -} - -static isc_result_t -opensslrsa_verify(dst_context_t *dctx, const isc_region_t *sig) { - dst_key_t *key = dctx->key; - RSA *rsa = key->opaque; - /* note: ISC_SHA1_DIGESTLENGTH > ISC_MD5_DIGESTLENGTH */ - unsigned char digest[ISC_SHA1_DIGESTLENGTH]; - int status = 0; - int type; - unsigned int digestlen; - - REQUIRE(dctx->key->key_alg == DST_ALG_RSAMD5 || - dctx->key->key_alg == DST_ALG_RSASHA1); - - if (dctx->key->key_alg == DST_ALG_RSAMD5) { - isc_md5_t *md5ctx = dctx->opaque; - isc_md5_final(md5ctx, digest); - type = NID_md5; - digestlen = ISC_MD5_DIGESTLENGTH; - } else { - isc_sha1_t *sha1ctx = dctx->opaque; - isc_sha1_final(sha1ctx, digest); - type = NID_sha1; - digestlen = ISC_SHA1_DIGESTLENGTH; - } - - if (sig->length < (unsigned int) RSA_size(rsa)) - return (DST_R_VERIFYFAILURE); - - status = RSA_verify(type, digest, digestlen, sig->base, - RSA_size(rsa), rsa); - if (status == 0) - return (dst__openssl_toresult(DST_R_VERIFYFAILURE)); - - return (ISC_R_SUCCESS); -} - -static isc_boolean_t -opensslrsa_compare(const dst_key_t *key1, const dst_key_t *key2) { - int status; - RSA *rsa1, *rsa2; - - rsa1 = (RSA *) key1->opaque; - rsa2 = (RSA *) key2->opaque; - - if (rsa1 == NULL && rsa2 == NULL) - return (ISC_TRUE); - else if (rsa1 == NULL || rsa2 == NULL) - return (ISC_FALSE); - - status = BN_cmp(rsa1->n, rsa2->n) || - BN_cmp(rsa1->e, rsa2->e); - - if (status != 0) - return (ISC_FALSE); - - if (rsa1->d != NULL || rsa2->d != NULL) { - if (rsa1->d == NULL || rsa2->d == NULL) - return (ISC_FALSE); - status = BN_cmp(rsa1->d, rsa2->d) || - BN_cmp(rsa1->p, rsa2->p) || - BN_cmp(rsa1->q, rsa2->q); - - if (status != 0) - return (ISC_FALSE); - } - return (ISC_TRUE); -} - -static isc_result_t -opensslrsa_generate(dst_key_t *key, int exp) { - RSA *rsa; - unsigned long e; - - if (exp == 0) - e = RSA_3; - else - e = RSA_F4; - rsa = RSA_generate_key(key->key_size, e, NULL, NULL); - if (rsa == NULL) - return (dst__openssl_toresult(DST_R_OPENSSLFAILURE)); - SET_FLAGS(rsa); - key->opaque = rsa; - - return (ISC_R_SUCCESS); -} - -static isc_boolean_t -opensslrsa_isprivate(const dst_key_t *key) { - RSA *rsa = (RSA *) key->opaque; - return (ISC_TF(rsa != NULL && rsa->d != NULL)); -} - -static void -opensslrsa_destroy(dst_key_t *key) { - RSA *rsa = key->opaque; - RSA_free(rsa); - key->opaque = NULL; -} - - -static isc_result_t -opensslrsa_todns(const dst_key_t *key, isc_buffer_t *data) { - RSA *rsa; - isc_region_t r; - unsigned int e_bytes; - unsigned int mod_bytes; - - REQUIRE(key->opaque != NULL); - - rsa = (RSA *) key->opaque; - - isc_buffer_availableregion(data, &r); - - e_bytes = BN_num_bytes(rsa->e); - mod_bytes = BN_num_bytes(rsa->n); - - if (e_bytes < 256) { /* key exponent is <= 2040 bits */ - if (r.length < 1) - return (ISC_R_NOSPACE); - isc_buffer_putuint8(data, (isc_uint8_t) e_bytes); - } else { - if (r.length < 3) - return (ISC_R_NOSPACE); - isc_buffer_putuint8(data, 0); - isc_buffer_putuint16(data, (isc_uint16_t) e_bytes); - } - - if (r.length < e_bytes + mod_bytes) - return (ISC_R_NOSPACE); - isc_buffer_availableregion(data, &r); - - BN_bn2bin(rsa->e, r.base); - r.base += e_bytes; - BN_bn2bin(rsa->n, r.base); - - isc_buffer_add(data, e_bytes + mod_bytes); - - return (ISC_R_SUCCESS); -} - -static isc_result_t -opensslrsa_fromdns(dst_key_t *key, isc_buffer_t *data) { - RSA *rsa; - isc_region_t r; - unsigned int e_bytes; - - isc_buffer_remainingregion(data, &r); - if (r.length == 0) - return (ISC_R_SUCCESS); - - rsa = RSA_new(); - if (rsa == NULL) - return (ISC_R_NOMEMORY); - SET_FLAGS(rsa); - - if (r.length < 1) { - RSA_free(rsa); - return (DST_R_INVALIDPUBLICKEY); - } - e_bytes = *r.base++; - r.length--; - - if (e_bytes == 0) { - if (r.length < 2) { - RSA_free(rsa); - return (DST_R_INVALIDPUBLICKEY); - } - e_bytes = ((*r.base++) << 8); - e_bytes += *r.base++; - r.length -= 2; - } - - if (r.length < e_bytes) { - RSA_free(rsa); - return (DST_R_INVALIDPUBLICKEY); - } - rsa->e = BN_bin2bn(r.base, e_bytes, NULL); - r.base += e_bytes; - r.length -= e_bytes; - - rsa->n = BN_bin2bn(r.base, r.length, NULL); - - key->key_size = BN_num_bits(rsa->n); - - isc_buffer_forward(data, r.length); - - key->opaque = (void *) rsa; - - return (ISC_R_SUCCESS); -} - - -static isc_result_t -opensslrsa_tofile(const dst_key_t *key, const char *directory) { - int i; - RSA *rsa; - dst_private_t priv; - unsigned char *bufs[8]; - isc_result_t result; - - if (key->opaque == NULL) - return (DST_R_NULLKEY); - - rsa = (RSA *) key->opaque; - - for (i = 0; i < 8; i++) { - bufs[i] = isc_mem_get(key->mctx, BN_num_bytes(rsa->n)); - if (bufs[i] == NULL) { - result = ISC_R_NOMEMORY; - goto fail; - } - } - - i = 0; - - priv.elements[i].tag = TAG_RSA_MODULUS; - priv.elements[i].length = BN_num_bytes(rsa->n); - BN_bn2bin(rsa->n, bufs[i]); - priv.elements[i].data = bufs[i]; - i++; - - priv.elements[i].tag = TAG_RSA_PUBLICEXPONENT; - priv.elements[i].length = BN_num_bytes(rsa->e); - BN_bn2bin(rsa->e, bufs[i]); - priv.elements[i].data = bufs[i]; - i++; - - priv.elements[i].tag = TAG_RSA_PRIVATEEXPONENT; - priv.elements[i].length = BN_num_bytes(rsa->d); - BN_bn2bin(rsa->d, bufs[i]); - priv.elements[i].data = bufs[i]; - i++; - - priv.elements[i].tag = TAG_RSA_PRIME1; - priv.elements[i].length = BN_num_bytes(rsa->p); - BN_bn2bin(rsa->p, bufs[i]); - priv.elements[i].data = bufs[i]; - i++; - - priv.elements[i].tag = TAG_RSA_PRIME2; - priv.elements[i].length = BN_num_bytes(rsa->q); - BN_bn2bin(rsa->q, bufs[i]); - priv.elements[i].data = bufs[i]; - i++; - - priv.elements[i].tag = TAG_RSA_EXPONENT1; - priv.elements[i].length = BN_num_bytes(rsa->dmp1); - BN_bn2bin(rsa->dmp1, bufs[i]); - priv.elements[i].data = bufs[i]; - i++; - - priv.elements[i].tag = TAG_RSA_EXPONENT2; - priv.elements[i].length = BN_num_bytes(rsa->dmq1); - BN_bn2bin(rsa->dmq1, bufs[i]); - priv.elements[i].data = bufs[i]; - i++; - - priv.elements[i].tag = TAG_RSA_COEFFICIENT; - priv.elements[i].length = BN_num_bytes(rsa->iqmp); - BN_bn2bin(rsa->iqmp, bufs[i]); - priv.elements[i].data = bufs[i]; - i++; - - priv.nelements = i; - result = dst__privstruct_writefile(key, &priv, directory); - fail: - for (i = 0; i < 8; i++) { - if (bufs[i] == NULL) - break; - isc_mem_put(key->mctx, bufs[i], BN_num_bytes(rsa->n)); - } - return (result); -} - -static isc_result_t -opensslrsa_parse(dst_key_t *key, isc_lex_t *lexer) { - dst_private_t priv; - isc_result_t ret; - int i; - RSA *rsa = NULL; - isc_mem_t *mctx = key->mctx; -#define DST_RET(a) {ret = a; goto err;} - - /* read private key file */ - ret = dst__privstruct_parse(key, DST_ALG_RSA, lexer, mctx, &priv); - if (ret != ISC_R_SUCCESS) - return (ret); - - rsa = RSA_new(); - if (rsa == NULL) - DST_RET(ISC_R_NOMEMORY); - SET_FLAGS(rsa); - key->opaque = rsa; - - for (i = 0; i < priv.nelements; i++) { - BIGNUM *bn; - bn = BN_bin2bn(priv.elements[i].data, - priv.elements[i].length, NULL); - if (bn == NULL) - DST_RET(ISC_R_NOMEMORY); - - switch (priv.elements[i].tag) { - case TAG_RSA_MODULUS: - rsa->n = bn; - break; - case TAG_RSA_PUBLICEXPONENT: - rsa->e = bn; - break; - case TAG_RSA_PRIVATEEXPONENT: - rsa->d = bn; - break; - case TAG_RSA_PRIME1: - rsa->p = bn; - break; - case TAG_RSA_PRIME2: - rsa->q = bn; - break; - case TAG_RSA_EXPONENT1: - rsa->dmp1 = bn; - break; - case TAG_RSA_EXPONENT2: - rsa->dmq1 = bn; - break; - case TAG_RSA_COEFFICIENT: - rsa->iqmp = bn; - break; - } - } - dst__privstruct_free(&priv, mctx); - - key->key_size = BN_num_bits(rsa->n); - - return (ISC_R_SUCCESS); - - err: - opensslrsa_destroy(key); - dst__privstruct_free(&priv, mctx); - memset(&priv, 0, sizeof(priv)); - return (ret); -} - -static dst_func_t opensslrsa_functions = { - opensslrsa_createctx, - opensslrsa_destroyctx, - opensslrsa_adddata, - opensslrsa_sign, - opensslrsa_verify, - NULL, /* computesecret */ - opensslrsa_compare, - NULL, /* paramcompare */ - opensslrsa_generate, - opensslrsa_isprivate, - opensslrsa_destroy, - opensslrsa_todns, - opensslrsa_fromdns, - opensslrsa_tofile, - opensslrsa_parse, - NULL, /* cleanup */ -}; - -isc_result_t -dst__opensslrsa_init(dst_func_t **funcp) { - REQUIRE(funcp != NULL); - if (*funcp == NULL) - *funcp = &opensslrsa_functions; - return (ISC_R_SUCCESS); -} - -#else /* OPENSSL */ - -#include <isc/util.h> - -EMPTY_TRANSLATION_UNIT - -#endif /* OPENSSL */ |