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);
}
/* given a reader and a reader arg, calculate and validate the the hash
* signature of a NIST leap second file.
*/
int
leapsec_validate(
leapsec_reader func,
void * farg)
{
isc_sha1_t mdctx;
sha1_digest rdig, ldig; /* remote / local digests */
char line[50];
int hlseen = -1;
isc_sha1_init(&mdctx);
while (get_line(func, farg, line, sizeof(line))) {
if (!strncmp(line, "#h", 2))
hlseen = do_leap_hash(&rdig, line+2);
else if (!strncmp(line, "#@", 2))
do_hash_data(&mdctx, line+2);
else if (!strncmp(line, "#$", 2))
do_hash_data(&mdctx, line+2);
else if (isdigit((unsigned char)line[0]))
do_hash_data(&mdctx, line);
}
isc_sha1_final(&mdctx, ldig.hv);
isc_sha1_invalidate(&mdctx);
if (0 > hlseen)
return LSVALID_NOHASH;
if (0 == hlseen)
return LSVALID_BADFORMAT;
if (0 != memcmp(&rdig, &ldig, sizeof(sha1_digest)))
return LSVALID_BADHASH;
return LSVALID_GOODHASH;
}
static isc_result_t
openssldsa_sign(dst_context_t *dctx, isc_buffer_t *sig) {
isc_sha1_t *sha1ctx = dctx->opaque;
dst_key_t *key = dctx->key;
DSA *dsa = key->opaque;
DSA_SIG *dsasig;
isc_region_t r;
unsigned char digest[ISC_SHA1_DIGESTLENGTH];
isc_buffer_availableregion(sig, &r);
if (r.length < ISC_SHA1_DIGESTLENGTH * 2 + 1)
return (ISC_R_NOSPACE);
isc_sha1_final(sha1ctx, digest);
dsasig = DSA_do_sign(digest, ISC_SHA1_DIGESTLENGTH, dsa);
if (dsasig == NULL)
return (dst__openssl_toresult(DST_R_SIGNFAILURE));
*r.base++ = (key->key_size - 512)/64;
BN_bn2bin_fixed(dsasig->r, r.base, ISC_SHA1_DIGESTLENGTH);
r.base += ISC_SHA1_DIGESTLENGTH;
BN_bn2bin_fixed(dsasig->s, r.base, ISC_SHA1_DIGESTLENGTH);
r.base += ISC_SHA1_DIGESTLENGTH;
DSA_SIG_free(dsasig);
isc_buffer_add(sig, ISC_SHA1_DIGESTLENGTH * 2 + 1);
return (ISC_R_SUCCESS);
}
static isc_result_t
openssldsa_verify(dst_context_t *dctx, const isc_region_t *sig) {
isc_sha1_t *sha1ctx = dctx->opaque;
dst_key_t *key = dctx->key;
DSA *dsa = key->opaque;
DSA_SIG *dsasig;
int status = 0;
unsigned char digest[ISC_SHA1_DIGESTLENGTH];
unsigned char *cp = sig->base;
isc_sha1_final(sha1ctx, digest);
if (sig->length < 2 * ISC_SHA1_DIGESTLENGTH + 1)
return (DST_R_VERIFYFAILURE);
cp++; /*%< Skip T */
dsasig = DSA_SIG_new();
dsasig->r = BN_bin2bn(cp, ISC_SHA1_DIGESTLENGTH, NULL);
cp += ISC_SHA1_DIGESTLENGTH;
dsasig->s = BN_bin2bn(cp, ISC_SHA1_DIGESTLENGTH, NULL);
cp += ISC_SHA1_DIGESTLENGTH;
status = DSA_do_verify(digest, ISC_SHA1_DIGESTLENGTH, dsasig, dsa);
DSA_SIG_free(dsasig);
if (status <= 0)
return (dst__openssl_toresult(DST_R_VERIFYFAILURE));
return (ISC_R_SUCCESS);
}
/*
* Compute signature - finalize SHA1 operation and reapply SHA1.
*/
void
isc_hmacsha1_sign(isc_hmacsha1_t *ctx, unsigned char *digest, size_t len) {
unsigned char opad[ISC_SHA1_BLOCK_LENGTH];
unsigned char newdigest[ISC_SHA1_DIGESTLENGTH];
unsigned int i;
REQUIRE(len <= ISC_SHA1_DIGESTLENGTH);
isc_sha1_final(&ctx->sha1ctx, newdigest);
memset(opad, OPAD, sizeof(opad));
for (i = 0; i < ISC_SHA1_BLOCK_LENGTH; i++)
opad[i] ^= ctx->key[i];
isc_sha1_init(&ctx->sha1ctx);
isc_sha1_update(&ctx->sha1ctx, opad, sizeof(opad));
isc_sha1_update(&ctx->sha1ctx, newdigest, ISC_SHA1_DIGESTLENGTH);
isc_sha1_final(&ctx->sha1ctx, newdigest);
isc_hmacsha1_invalidate(ctx);
memcpy(digest, newdigest, len);
memset(newdigest, 0, sizeof(newdigest));
}
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);
}
/*
* Start HMAC-SHA1 process. Initialize an sha1 context and digest the key.
*/
void
isc_hmacsha1_init(isc_hmacsha1_t *ctx, const unsigned char *key,
unsigned int len)
{
unsigned char ipad[ISC_SHA1_BLOCK_LENGTH];
unsigned int i;
memset(ctx->key, 0, sizeof(ctx->key));
if (len > sizeof(ctx->key)) {
isc_sha1_t sha1ctx;
isc_sha1_init(&sha1ctx);
isc_sha1_update(&sha1ctx, key, len);
isc_sha1_final(&sha1ctx, ctx->key);
} else
memcpy(ctx->key, key, len);
isc_sha1_init(&ctx->sha1ctx);
memset(ipad, IPAD, sizeof(ipad));
for (i = 0; i < ISC_SHA1_BLOCK_LENGTH; i++)
ipad[i] ^= ctx->key[i];
isc_sha1_update(&ctx->sha1ctx, ipad, sizeof(ipad));
}
int
isc_iterated_hash(unsigned char out[ISC_SHA1_DIGESTLENGTH],
unsigned int hashalg, int iterations,
const unsigned char *salt, int saltlength,
const unsigned char *in, int inlength)
{
isc_sha1_t ctx;
int n = 0;
if (hashalg != 1)
return (0);
do {
isc_sha1_init(&ctx);
isc_sha1_update(&ctx, in, inlength);
isc_sha1_update(&ctx, salt, saltlength);
isc_sha1_final(&ctx, out);
in = out;
inlength = ISC_SHA1_DIGESTLENGTH;
} while (n++ < iterations);
return (ISC_SHA1_DIGESTLENGTH);
}
isc_result_t
dns_ds_buildrdata(dns_name_t *owner, dns_rdata_t *key,
unsigned int digest_type, unsigned char *buffer,
dns_rdata_t *rdata)
{
dns_fixedname_t fname;
dns_name_t *name;
unsigned char digest[ISC_SHA256_DIGESTLENGTH];
isc_region_t r;
isc_buffer_t b;
dns_rdata_ds_t ds;
isc_sha1_t sha1;
isc_sha256_t sha256;
#ifdef HAVE_OPENSSL_GOST
EVP_MD_CTX ctx;
const EVP_MD *md;
#endif
REQUIRE(key != NULL);
REQUIRE(key->type == dns_rdatatype_dnskey);
if (!dns_ds_digest_supported(digest_type))
return (ISC_R_NOTIMPLEMENTED);
dns_fixedname_init(&fname);
name = dns_fixedname_name(&fname);
(void)dns_name_downcase(owner, name, NULL);
memset(buffer, 0, DNS_DS_BUFFERSIZE);
isc_buffer_init(&b, buffer, DNS_DS_BUFFERSIZE);
switch (digest_type) {
case DNS_DSDIGEST_SHA1:
isc_sha1_init(&sha1);
dns_name_toregion(name, &r);
isc_sha1_update(&sha1, r.base, r.length);
dns_rdata_toregion(key, &r);
INSIST(r.length >= 4);
isc_sha1_update(&sha1, r.base, r.length);
isc_sha1_final(&sha1, digest);
break;
#ifdef HAVE_OPENSSL_GOST
#define CHECK(x) \
if ((x) != 1) { \
EVP_MD_CTX_cleanup(&ctx); \
return (DST_R_OPENSSLFAILURE); \
}
case DNS_DSDIGEST_GOST:
md = EVP_gost();
if (md == NULL)
return (DST_R_OPENSSLFAILURE);
EVP_MD_CTX_init(&ctx);
CHECK(EVP_DigestInit(&ctx, md));
dns_name_toregion(name, &r);
CHECK(EVP_DigestUpdate(&ctx,
(const void *) r.base,
(size_t) r.length));
dns_rdata_toregion(key, &r);
INSIST(r.length >= 4);
CHECK(EVP_DigestUpdate(&ctx,
(const void *) r.base,
(size_t) r.length));
CHECK(EVP_DigestFinal(&ctx, digest, NULL));
break;
#endif
default:
isc_sha256_init(&sha256);
dns_name_toregion(name, &r);
isc_sha256_update(&sha256, r.base, r.length);
dns_rdata_toregion(key, &r);
INSIST(r.length >= 4);
isc_sha256_update(&sha256, r.base, r.length);
isc_sha256_final(digest, &sha256);
break;
}
ds.mctx = NULL;
ds.common.rdclass = key->rdclass;
ds.common.rdtype = dns_rdatatype_ds;
ds.algorithm = r.base[3];
ds.key_tag = dst_region_computeid(&r, ds.algorithm);
ds.digest_type = digest_type;
switch (digest_type) {
case DNS_DSDIGEST_SHA1:
ds.length = ISC_SHA1_DIGESTLENGTH;
break;
#ifdef HAVE_OPENSSL_GOST
case DNS_DSDIGEST_GOST:
ds.length = ISC_GOST_DIGESTLENGTH;
break;
#endif
default:
ds.length = ISC_SHA256_DIGESTLENGTH;
break;
}
ds.digest = digest;
return (dns_rdata_fromstruct(rdata, key->rdclass, dns_rdatatype_ds,
&ds, &b));
}
static isc_result_t
opensslrsa_verify(dst_context_t *dctx, const isc_region_t *sig) {
dst_key_t *key = dctx->key;
int status = 0;
#if USE_EVP
EVP_MD_CTX *evp_md_ctx = dctx->ctxdata.evp_md_ctx;
EVP_PKEY *pkey = key->keydata.pkey;
#else
/* note: ISC_SHA512_DIGESTLENGTH >= ISC_*_DIGESTLENGTH */
unsigned char digest[ISC_SHA512_DIGESTLENGTH];
int type = 0;
unsigned int digestlen = 0;
RSA *rsa = key->keydata.rsa;
#if OPENSSL_VERSION_NUMBER < 0x00908000L
unsigned int prefixlen = 0;
const unsigned char *prefix = NULL;
#endif
#endif
REQUIRE(dctx->key->key_alg == DST_ALG_RSAMD5 ||
dctx->key->key_alg == DST_ALG_RSASHA1 ||
dctx->key->key_alg == DST_ALG_NSEC3RSASHA1 ||
dctx->key->key_alg == DST_ALG_RSASHA256 ||
dctx->key->key_alg == DST_ALG_RSASHA512);
#if USE_EVP
status = EVP_VerifyFinal(evp_md_ctx, sig->base, sig->length, pkey);
#else
switch (dctx->key->key_alg) {
case DST_ALG_RSAMD5:
{
isc_md5_t *md5ctx = dctx->ctxdata.md5ctx;
isc_md5_final(md5ctx, digest);
type = NID_md5;
digestlen = ISC_MD5_DIGESTLENGTH;
}
break;
case DST_ALG_RSASHA1:
case DST_ALG_NSEC3RSASHA1:
{
isc_sha1_t *sha1ctx = dctx->ctxdata.sha1ctx;
isc_sha1_final(sha1ctx, digest);
type = NID_sha1;
digestlen = ISC_SHA1_DIGESTLENGTH;
}
break;
case DST_ALG_RSASHA256:
{
isc_sha256_t *sha256ctx = dctx->ctxdata.sha256ctx;
isc_sha256_final(digest, sha256ctx);
digestlen = ISC_SHA256_DIGESTLENGTH;
#if OPENSSL_VERSION_NUMBER < 0x00908000L
prefix = sha256_prefix;
prefixlen = sizeof(sha256_prefix);
#else
type = NID_sha256;
#endif
}
break;
case DST_ALG_RSASHA512:
{
isc_sha512_t *sha512ctx = dctx->ctxdata.sha512ctx;
isc_sha512_final(digest, sha512ctx);
digestlen = ISC_SHA512_DIGESTLENGTH;
#if OPENSSL_VERSION_NUMBER < 0x00908000L
prefix = sha512_prefix;
prefixlen = sizeof(sha512_prefix);
#else
type = NID_sha512;
#endif
}
break;
default:
INSIST(0);
}
if (sig->length != (unsigned int) RSA_size(rsa))
return (DST_R_VERIFYFAILURE);
#if OPENSSL_VERSION_NUMBER < 0x00908000L
switch (dctx->key->key_alg) {
case DST_ALG_RSAMD5:
case DST_ALG_RSASHA1:
case DST_ALG_NSEC3RSASHA1:
INSIST(type != 0);
status = RSA_verify(type, digest, digestlen, sig->base,
RSA_size(rsa), rsa);
break;
case DST_ALG_RSASHA256:
case DST_ALG_RSASHA512:
{
/*
* 1024 is big enough for all valid RSA bit sizes
* for use with DNSSEC.
*/
unsigned char original[PREFIXLEN + 1024];
INSIST(prefix != NULL);
INSIST(prefixlen != 0U);
if (RSA_size(rsa) > (int)sizeof(original))
return (DST_R_VERIFYFAILURE);
status = RSA_public_decrypt(sig->length, sig->base,
original, rsa,
RSA_PKCS1_PADDING);
if (status <= 0)
return (dst__openssl_toresult2(
"RSA_public_decrypt",
DST_R_VERIFYFAILURE));
if (status != (int)(prefixlen + digestlen))
return (DST_R_VERIFYFAILURE);
if (memcmp(original, prefix, prefixlen))
return (DST_R_VERIFYFAILURE);
if (memcmp(original + prefixlen, digest, digestlen))
return (DST_R_VERIFYFAILURE);
status = 1;
}
break;
default:
INSIST(0);
}
#else
INSIST(type != 0);
status = RSA_verify(type, digest, digestlen, sig->base,
RSA_size(rsa), rsa);
#endif
#endif
if (status != 1)
return (dst__openssl_toresult2("RSA_verify",
DST_R_VERIFYFAILURE));
return (ISC_R_SUCCESS);
}
static isc_result_t
opensslrsa_sign(dst_context_t *dctx, isc_buffer_t *sig) {
dst_key_t *key = dctx->key;
isc_region_t r;
unsigned int siglen = 0;
#if USE_EVP
EVP_MD_CTX *evp_md_ctx = dctx->ctxdata.evp_md_ctx;
EVP_PKEY *pkey = key->keydata.pkey;
#else
RSA *rsa = key->keydata.rsa;
/* note: ISC_SHA512_DIGESTLENGTH >= ISC_*_DIGESTLENGTH */
unsigned char digest[PREFIXLEN + ISC_SHA512_DIGESTLENGTH];
int status;
int type = 0;
unsigned int digestlen = 0;
#if OPENSSL_VERSION_NUMBER < 0x00908000L
unsigned int prefixlen = 0;
const unsigned char *prefix = NULL;
#endif
#endif
REQUIRE(dctx->key->key_alg == DST_ALG_RSAMD5 ||
dctx->key->key_alg == DST_ALG_RSASHA1 ||
dctx->key->key_alg == DST_ALG_NSEC3RSASHA1 ||
dctx->key->key_alg == DST_ALG_RSASHA256 ||
dctx->key->key_alg == DST_ALG_RSASHA512);
isc_buffer_availableregion(sig, &r);
#if USE_EVP
if (r.length < (unsigned int) EVP_PKEY_size(pkey))
return (ISC_R_NOSPACE);
if (!EVP_SignFinal(evp_md_ctx, r.base, &siglen, pkey)) {
return (dst__openssl_toresult2("EVP_SignFinal",
ISC_R_FAILURE));
}
#else
if (r.length < (unsigned int) RSA_size(rsa))
return (ISC_R_NOSPACE);
switch (dctx->key->key_alg) {
case DST_ALG_RSAMD5:
{
isc_md5_t *md5ctx = dctx->ctxdata.md5ctx;
isc_md5_final(md5ctx, digest);
type = NID_md5;
digestlen = ISC_MD5_DIGESTLENGTH;
}
break;
case DST_ALG_RSASHA1:
case DST_ALG_NSEC3RSASHA1:
{
isc_sha1_t *sha1ctx = dctx->ctxdata.sha1ctx;
isc_sha1_final(sha1ctx, digest);
type = NID_sha1;
digestlen = ISC_SHA1_DIGESTLENGTH;
}
break;
case DST_ALG_RSASHA256:
{
isc_sha256_t *sha256ctx = dctx->ctxdata.sha256ctx;
isc_sha256_final(digest, sha256ctx);
digestlen = ISC_SHA256_DIGESTLENGTH;
#if OPENSSL_VERSION_NUMBER < 0x00908000L
prefix = sha256_prefix;
prefixlen = sizeof(sha256_prefix);
#else
type = NID_sha256;
#endif
}
break;
case DST_ALG_RSASHA512:
{
isc_sha512_t *sha512ctx = dctx->ctxdata.sha512ctx;
isc_sha512_final(digest, sha512ctx);
digestlen = ISC_SHA512_DIGESTLENGTH;
#if OPENSSL_VERSION_NUMBER < 0x00908000L
prefix = sha512_prefix;
prefixlen = sizeof(sha512_prefix);
#else
type = NID_sha512;
#endif
}
break;
default:
INSIST(0);
}
#if OPENSSL_VERSION_NUMBER < 0x00908000L
switch (dctx->key->key_alg) {
case DST_ALG_RSAMD5:
case DST_ALG_RSASHA1:
case DST_ALG_NSEC3RSASHA1:
INSIST(type != 0);
status = RSA_sign(type, digest, digestlen, r.base,
&siglen, rsa);
break;
case DST_ALG_RSASHA256:
case DST_ALG_RSASHA512:
INSIST(prefix != NULL);
INSIST(prefixlen != 0);
INSIST(prefixlen + digestlen <= sizeof(digest));
memmove(digest + prefixlen, digest, digestlen);
memcpy(digest, prefix, prefixlen);
status = RSA_private_encrypt(digestlen + prefixlen,
digest, r.base, rsa,
RSA_PKCS1_PADDING);
if (status < 0)
status = 0;
else
siglen = status;
break;
default:
INSIST(0);
}
#else
INSIST(type != 0);
status = RSA_sign(type, digest, digestlen, r.base, &siglen, rsa);
#endif
if (status == 0)
return (dst__openssl_toresult2("RSA_sign",
DST_R_OPENSSLFAILURE));
#endif
isc_buffer_add(sig, siglen);
return (ISC_R_SUCCESS);
}
isc_result_t
dns_ds_buildrdata(dns_name_t *owner, dns_rdata_t *key,
unsigned int digest_type, unsigned char *buffer,
dns_rdata_t *rdata)
{
dns_fixedname_t fname;
dns_name_t *name;
unsigned char digest[ISC_SHA384_DIGESTLENGTH];
isc_region_t r;
isc_buffer_t b;
dns_rdata_ds_t ds;
isc_sha1_t sha1;
isc_sha256_t sha256;
isc_sha384_t sha384;
#if defined(HAVE_OPENSSL_GOST) || defined(HAVE_PKCS11_GOST)
isc_gost_t gost;
#endif
REQUIRE(key != NULL);
REQUIRE(key->type == dns_rdatatype_dnskey);
if (!dst_ds_digest_supported(digest_type))
return (ISC_R_NOTIMPLEMENTED);
dns_fixedname_init(&fname);
name = dns_fixedname_name(&fname);
(void)dns_name_downcase(owner, name, NULL);
memset(buffer, 0, DNS_DS_BUFFERSIZE);
isc_buffer_init(&b, buffer, DNS_DS_BUFFERSIZE);
switch (digest_type) {
case DNS_DSDIGEST_SHA1:
isc_sha1_init(&sha1);
dns_name_toregion(name, &r);
isc_sha1_update(&sha1, r.base, r.length);
dns_rdata_toregion(key, &r);
INSIST(r.length >= 4);
isc_sha1_update(&sha1, r.base, r.length);
isc_sha1_final(&sha1, digest);
break;
#if defined(HAVE_OPENSSL_GOST) || defined(HAVE_PKCS11_GOST)
#define RETERR(x) do { \
isc_result_t ret = (x); \
if (ret != ISC_R_SUCCESS) { \
isc_gost_invalidate(&gost); \
return (ret); \
} \
} while (/*CONSTCOND*/0)
case DNS_DSDIGEST_GOST:
RETERR(isc_gost_init(&gost));
dns_name_toregion(name, &r);
RETERR(isc_gost_update(&gost, r.base, r.length));
dns_rdata_toregion(key, &r);
INSIST(r.length >= 4);
RETERR(isc_gost_update(&gost, r.base, r.length));
RETERR(isc_gost_final(&gost, digest));
break;
#endif
case DNS_DSDIGEST_SHA384:
isc_sha384_init(&sha384);
dns_name_toregion(name, &r);
isc_sha384_update(&sha384, r.base, r.length);
dns_rdata_toregion(key, &r);
INSIST(r.length >= 4);
isc_sha384_update(&sha384, r.base, r.length);
isc_sha384_final(digest, &sha384);
break;
case DNS_DSDIGEST_SHA256:
default:
isc_sha256_init(&sha256);
dns_name_toregion(name, &r);
isc_sha256_update(&sha256, r.base, r.length);
dns_rdata_toregion(key, &r);
INSIST(r.length >= 4);
isc_sha256_update(&sha256, r.base, r.length);
isc_sha256_final(digest, &sha256);
break;
}
ds.mctx = NULL;
ds.common.rdclass = key->rdclass;
ds.common.rdtype = dns_rdatatype_ds;
ds.algorithm = r.base[3];
ds.key_tag = dst_region_computeid(&r, ds.algorithm);
ds.digest_type = digest_type;
switch (digest_type) {
case DNS_DSDIGEST_SHA1:
ds.length = ISC_SHA1_DIGESTLENGTH;
break;
#if defined(HAVE_OPENSSL_GOST) || defined(HAVE_PKCS11_GOST)
case DNS_DSDIGEST_GOST:
ds.length = ISC_GOST_DIGESTLENGTH;
break;
#endif
case DNS_DSDIGEST_SHA384:
ds.length = ISC_SHA384_DIGESTLENGTH;
break;
case DNS_DSDIGEST_SHA256:
default:
ds.length = ISC_SHA256_DIGESTLENGTH;
break;
}
ds.digest = digest;
return (dns_rdata_fromstruct(rdata, key->rdclass, dns_rdatatype_ds,
&ds, &b));
}
static isc_result_t
openssldsa_verify(dst_context_t *dctx, const isc_region_t *sig) {
dst_key_t *key = dctx->key;
DSA *dsa = key->keydata.dsa;
int status = 0;
unsigned char *cp = sig->base;
DSA_SIG *dsasig;
#if USE_EVP
EVP_MD_CTX *evp_md_ctx = dctx->ctxdata.evp_md_ctx;
#if 0
EVP_PKEY *pkey;
unsigned char *sigbuf;
#endif
unsigned int siglen;
#else
isc_sha1_t *sha1ctx = dctx->ctxdata.sha1ctx;
#endif
unsigned char digest[ISC_SHA1_DIGESTLENGTH];
#if USE_EVP
#if 1
/* Only use EVP for the digest */
if (!EVP_DigestFinal_ex(evp_md_ctx, digest, &siglen)) {
return (ISC_R_FAILURE);
}
#endif
#else
isc_sha1_final(sha1ctx, digest);
#endif
if (sig->length != 2 * ISC_SHA1_DIGESTLENGTH + 1) {
return (DST_R_VERIFYFAILURE);
}
cp++; /*%< Skip T */
dsasig = DSA_SIG_new();
if (dsasig == NULL)
return (ISC_R_NOMEMORY);
dsasig->r = BN_bin2bn(cp, ISC_SHA1_DIGESTLENGTH, NULL);
cp += ISC_SHA1_DIGESTLENGTH;
dsasig->s = BN_bin2bn(cp, ISC_SHA1_DIGESTLENGTH, NULL);
#if 0
pkey = EVP_PKEY_new();
if (pkey == NULL)
return (ISC_R_NOMEMORY);
if (!EVP_PKEY_set1_DSA(pkey, dsa)) {
EVP_PKEY_free(pkey);
return (ISC_R_FAILURE);
}
/* Convert to Dss-Sig-Value (RFC2459). */
sigbuf = malloc(EVP_PKEY_size(pkey) + 50);
if (sigbuf == NULL) {
EVP_PKEY_free(pkey);
return (ISC_R_NOMEMORY);
}
siglen = (unsigned) i2d_DSA_SIG(dsasig, &sigbuf);
INSIST(EVP_PKEY_size(pkey) >= (int) siglen);
status = EVP_VerifyFinal(evp_md_ctx, sigbuf, siglen, pkey);
EVP_PKEY_free(pkey);
free(sigbuf);
#else
status = DSA_do_verify(digest, ISC_SHA1_DIGESTLENGTH, dsasig, dsa);
#endif
DSA_SIG_free(dsasig);
if (status != 1)
return (dst__openssl_toresult(DST_R_VERIFYFAILURE));
return (ISC_R_SUCCESS);
}
static isc_result_t
openssldsa_sign(dst_context_t *dctx, isc_buffer_t *sig) {
dst_key_t *key = dctx->key;
DSA *dsa = key->keydata.dsa;
isc_region_t r;
DSA_SIG *dsasig;
#if USE_EVP
EVP_MD_CTX *evp_md_ctx = dctx->ctxdata.evp_md_ctx;
EVP_PKEY *pkey;
unsigned char *sigbuf;
const unsigned char *sb;
unsigned int siglen;
#else
isc_sha1_t *sha1ctx = dctx->ctxdata.sha1ctx;
unsigned char digest[ISC_SHA1_DIGESTLENGTH];
#endif
isc_buffer_availableregion(sig, &r);
if (r.length < ISC_SHA1_DIGESTLENGTH * 2 + 1)
return (ISC_R_NOSPACE);
#if USE_EVP
pkey = EVP_PKEY_new();
if (pkey == NULL)
return (ISC_R_NOMEMORY);
if (!EVP_PKEY_set1_DSA(pkey, dsa)) {
EVP_PKEY_free(pkey);
return (ISC_R_FAILURE);
}
sigbuf = malloc(EVP_PKEY_size(pkey));
if (sigbuf == NULL) {
EVP_PKEY_free(pkey);
return (ISC_R_NOMEMORY);
}
if (!EVP_SignFinal(evp_md_ctx, sigbuf, &siglen, pkey)) {
EVP_PKEY_free(pkey);
free(sigbuf);
return (ISC_R_FAILURE);
}
INSIST(EVP_PKEY_size(pkey) >= (int) siglen);
EVP_PKEY_free(pkey);
/* Convert from Dss-Sig-Value (RFC2459). */
dsasig = DSA_SIG_new();
if (dsasig == NULL) {
free(sigbuf);
return (ISC_R_NOMEMORY);
}
sb = sigbuf;
if (d2i_DSA_SIG(&dsasig, &sb, (long) siglen) == NULL) {
free(sigbuf);
return (ISC_R_FAILURE);
}
free(sigbuf);
#elif 0
/* Only use EVP for the Digest */
if (!EVP_DigestFinal_ex(evp_md_ctx, digest, &siglen)) {
return (ISC_R_FAILURE);
}
dsasig = DSA_do_sign(digest, ISC_SHA1_DIGESTLENGTH, dsa);
if (dsasig == NULL)
return (dst__openssl_toresult(DST_R_SIGNFAILURE));
#else
isc_sha1_final(sha1ctx, digest);
dsasig = DSA_do_sign(digest, ISC_SHA1_DIGESTLENGTH, dsa);
if (dsasig == NULL)
return (dst__openssl_toresult(DST_R_SIGNFAILURE));
#endif
*r.base++ = (key->key_size - 512)/64;
BN_bn2bin_fixed(dsasig->r, r.base, ISC_SHA1_DIGESTLENGTH);
r.base += ISC_SHA1_DIGESTLENGTH;
BN_bn2bin_fixed(dsasig->s, r.base, ISC_SHA1_DIGESTLENGTH);
r.base += ISC_SHA1_DIGESTLENGTH;
DSA_SIG_free(dsasig);
isc_buffer_add(sig, ISC_SHA1_DIGESTLENGTH * 2 + 1);
return (ISC_R_SUCCESS);
}
int
main(int argc, char **argv) {
isc_buffer_t buf;
unsigned char key[1024];
char secret[1024];
char base64[(1024*4)/3];
isc_region_t r;
isc_result_t result;
if (argc != 3) {
fprintf(stderr, "Usage:\t%s algorithm secret\n", argv[0]);
fprintf(stderr, "\talgorithm: (MD5 | SHA1 | SHA224 | "
"SHA256 | SHA384 | SHA512)\n");
return (1);
}
isc_buffer_init(&buf, secret, sizeof(secret));
result = isc_base64_decodestring(argv[2], &buf);
if (result != ISC_R_SUCCESS) {
fprintf(stderr, "error: %s\n", isc_result_totext(result));
return (1);
}
isc__buffer_usedregion(&buf, &r);
if (!strcasecmp(argv[1], "md5") ||
!strcasecmp(argv[1], "hmac-md5")) {
if (r.length > HMAC_LEN) {
isc_md5_t md5ctx;
isc_md5_init(&md5ctx);
isc_md5_update(&md5ctx, r.base, r.length);
isc_md5_final(&md5ctx, key);
r.base = key;
r.length = ISC_MD5_DIGESTLENGTH;
}
} else if (!strcasecmp(argv[1], "sha1") ||
!strcasecmp(argv[1], "hmac-sha1")) {
if (r.length > ISC_SHA1_DIGESTLENGTH) {
isc_sha1_t sha1ctx;
isc_sha1_init(&sha1ctx);
isc_sha1_update(&sha1ctx, r.base, r.length);
isc_sha1_final(&sha1ctx, key);
r.base = key;
r.length = ISC_SHA1_DIGESTLENGTH;
}
} else if (!strcasecmp(argv[1], "sha224") ||
!strcasecmp(argv[1], "hmac-sha224")) {
if (r.length > ISC_SHA224_DIGESTLENGTH) {
isc_sha224_t sha224ctx;
isc_sha224_init(&sha224ctx);
isc_sha224_update(&sha224ctx, r.base, r.length);
isc_sha224_final(key, &sha224ctx);
r.base = key;
r.length = ISC_SHA224_DIGESTLENGTH;
}
} else if (!strcasecmp(argv[1], "sha256") ||
!strcasecmp(argv[1], "hmac-sha256")) {
if (r.length > ISC_SHA256_DIGESTLENGTH) {
isc_sha256_t sha256ctx;
isc_sha256_init(&sha256ctx);
isc_sha256_update(&sha256ctx, r.base, r.length);
isc_sha256_final(key, &sha256ctx);
r.base = key;
r.length = ISC_SHA256_DIGESTLENGTH;
}
} else if (!strcasecmp(argv[1], "sha384") ||
!strcasecmp(argv[1], "hmac-sha384")) {
if (r.length > ISC_SHA384_DIGESTLENGTH) {
isc_sha384_t sha384ctx;
isc_sha384_init(&sha384ctx);
isc_sha384_update(&sha384ctx, r.base, r.length);
isc_sha384_final(key, &sha384ctx);
r.base = key;
r.length = ISC_SHA384_DIGESTLENGTH;
}
} else if (!strcasecmp(argv[1], "sha512") ||
!strcasecmp(argv[1], "hmac-sha512")) {
if (r.length > ISC_SHA512_DIGESTLENGTH) {
isc_sha512_t sha512ctx;
isc_sha512_init(&sha512ctx);
isc_sha512_update(&sha512ctx, r.base, r.length);
isc_sha512_final(key, &sha512ctx);
r.base = key;
r.length = ISC_SHA512_DIGESTLENGTH;
}
} else {
fprintf(stderr, "unknown hmac/digest algorithm: %s\n", argv[1]);
return (1);
}
isc_buffer_init(&buf, base64, sizeof(base64));
result = isc_base64_totext(&r, 0, "", &buf);
if (result != ISC_R_SUCCESS) {
fprintf(stderr, "error: %s\n", isc_result_totext(result));
return (1);
}
fprintf(stdout, "%.*s\n", (int)isc_buffer_usedlength(&buf), base64);
return (0);
}
int
main(int argc, char **argv) {
isc_sha1_t sha1;
isc_sha224_t sha224;
isc_md5_t md5;
isc_hmacmd5_t hmacmd5;
isc_hmacsha1_t hmacsha1;
isc_hmacsha224_t hmacsha224;
isc_hmacsha256_t hmacsha256;
isc_hmacsha384_t hmacsha384;
isc_hmacsha512_t hmacsha512;
unsigned char digest[ISC_SHA512_DIGESTLENGTH];
unsigned char buffer[1024];
const char *s;
unsigned char key[20];
UNUSED(argc);
UNUSED(argv);
s = "abc";
isc_sha1_init(&sha1);
memcpy(buffer, s, strlen(s));
isc_sha1_update(&sha1, buffer, strlen(s));
isc_sha1_final(&sha1, digest);
print_digest(s, "sha1", digest, ISC_SHA1_DIGESTLENGTH/4);
s = "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq";
isc_sha1_init(&sha1);
memcpy(buffer, s, strlen(s));
isc_sha1_update(&sha1, buffer, strlen(s));
isc_sha1_final(&sha1, digest);
print_digest(s, "sha1", digest, ISC_SHA1_DIGESTLENGTH/4);
s = "abc";
isc_sha224_init(&sha224);
memcpy(buffer, s, strlen(s));
isc_sha224_update(&sha224, buffer, strlen(s));
isc_sha224_final(digest, &sha224);
print_digest(s, "sha224", digest, ISC_SHA224_DIGESTLENGTH/4);
s = "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq";
isc_sha224_init(&sha224);
memcpy(buffer, s, strlen(s));
isc_sha224_update(&sha224, buffer, strlen(s));
isc_sha224_final(digest, &sha224);
print_digest(s, "sha224", digest, ISC_SHA224_DIGESTLENGTH/4);
s = "abc";
isc_md5_init(&md5);
memcpy(buffer, s, strlen(s));
isc_md5_update(&md5, buffer, strlen(s));
isc_md5_final(&md5, digest);
print_digest(s, "md5", digest, 4);
/*
* The 3 HMAC-MD5 examples from RFC2104
*/
s = "Hi There";
memset(key, 0x0b, 16);
isc_hmacmd5_init(&hmacmd5, key, 16);
memcpy(buffer, s, strlen(s));
isc_hmacmd5_update(&hmacmd5, buffer, strlen(s));
isc_hmacmd5_sign(&hmacmd5, digest);
print_digest(s, "hmacmd5", digest, 4);
s = "what do ya want for nothing?";
strcpy((char *)key, "Jefe");
isc_hmacmd5_init(&hmacmd5, key, 4);
memcpy(buffer, s, strlen(s));
isc_hmacmd5_update(&hmacmd5, buffer, strlen(s));
isc_hmacmd5_sign(&hmacmd5, digest);
print_digest(s, "hmacmd5", digest, 4);
s = "\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335";
memset(key, 0xaa, 16);
isc_hmacmd5_init(&hmacmd5, key, 16);
memcpy(buffer, s, strlen(s));
isc_hmacmd5_update(&hmacmd5, buffer, strlen(s));
isc_hmacmd5_sign(&hmacmd5, digest);
print_digest(s, "hmacmd5", digest, 4);
/*
* The 3 HMAC-SHA1 examples from RFC4634.
*/
s = "Hi There";
memset(key, 0x0b, 20);
isc_hmacsha1_init(&hmacsha1, key, 20);
memcpy(buffer, s, strlen(s));
isc_hmacsha1_update(&hmacsha1, buffer, strlen(s));
isc_hmacsha1_sign(&hmacsha1, digest, ISC_SHA1_DIGESTLENGTH);
print_digest(s, "hmacsha1", digest, ISC_SHA1_DIGESTLENGTH/4);
s = "what do ya want for nothing?";
strcpy((char *)key, "Jefe");
isc_hmacsha1_init(&hmacsha1, key, 4);
memcpy(buffer, s, strlen(s));
isc_hmacsha1_update(&hmacsha1, buffer, strlen(s));
isc_hmacsha1_sign(&hmacsha1, digest, ISC_SHA1_DIGESTLENGTH);
print_digest(s, "hmacsha1", digest, ISC_SHA1_DIGESTLENGTH/4);
s = "\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335";
memset(key, 0xaa, 20);
isc_hmacsha1_init(&hmacsha1, key, 20);
memcpy(buffer, s, strlen(s));
isc_hmacsha1_update(&hmacsha1, buffer, strlen(s));
isc_hmacsha1_sign(&hmacsha1, digest, ISC_SHA1_DIGESTLENGTH);
print_digest(s, "hmacsha1", digest, ISC_SHA1_DIGESTLENGTH/4);
/*
* The 3 HMAC-SHA224 examples from RFC4634.
*/
s = "Hi There";
memset(key, 0x0b, 20);
isc_hmacsha224_init(&hmacsha224, key, 20);
memcpy(buffer, s, strlen(s));
isc_hmacsha224_update(&hmacsha224, buffer, strlen(s));
isc_hmacsha224_sign(&hmacsha224, digest, ISC_SHA224_DIGESTLENGTH);
print_digest(s, "hmacsha224", digest, ISC_SHA224_DIGESTLENGTH/4);
s = "what do ya want for nothing?";
strcpy((char *)key, "Jefe");
isc_hmacsha224_init(&hmacsha224, key, 4);
memcpy(buffer, s, strlen(s));
isc_hmacsha224_update(&hmacsha224, buffer, strlen(s));
isc_hmacsha224_sign(&hmacsha224, digest, ISC_SHA224_DIGESTLENGTH);
print_digest(s, "hmacsha224", digest, ISC_SHA224_DIGESTLENGTH/4);
s = "\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335";
memset(key, 0xaa, 20);
isc_hmacsha224_init(&hmacsha224, key, 20);
memcpy(buffer, s, strlen(s));
isc_hmacsha224_update(&hmacsha224, buffer, strlen(s));
isc_hmacsha224_sign(&hmacsha224, digest, ISC_SHA224_DIGESTLENGTH);
print_digest(s, "hmacsha224", digest, ISC_SHA224_DIGESTLENGTH/4);
/*
* The 3 HMAC-SHA256 examples from RFC4634.
*/
s = "Hi There";
memset(key, 0x0b, 20);
isc_hmacsha256_init(&hmacsha256, key, 20);
memcpy(buffer, s, strlen(s));
isc_hmacsha256_update(&hmacsha256, buffer, strlen(s));
isc_hmacsha256_sign(&hmacsha256, digest, ISC_SHA256_DIGESTLENGTH);
print_digest(s, "hmacsha256", digest, ISC_SHA256_DIGESTLENGTH/4);
s = "what do ya want for nothing?";
strcpy((char *)key, "Jefe");
isc_hmacsha256_init(&hmacsha256, key, 4);
memcpy(buffer, s, strlen(s));
isc_hmacsha256_update(&hmacsha256, buffer, strlen(s));
isc_hmacsha256_sign(&hmacsha256, digest, ISC_SHA256_DIGESTLENGTH);
print_digest(s, "hmacsha256", digest, ISC_SHA256_DIGESTLENGTH/4);
s = "\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335";
memset(key, 0xaa, 20);
isc_hmacsha256_init(&hmacsha256, key, 20);
memcpy(buffer, s, strlen(s));
isc_hmacsha256_update(&hmacsha256, buffer, strlen(s));
isc_hmacsha256_sign(&hmacsha256, digest, ISC_SHA256_DIGESTLENGTH);
print_digest(s, "hmacsha256", digest, ISC_SHA256_DIGESTLENGTH/4);
/*
* The 3 HMAC-SHA384 examples from RFC4634.
*/
s = "Hi There";
memset(key, 0x0b, 20);
isc_hmacsha384_init(&hmacsha384, key, 20);
memcpy(buffer, s, strlen(s));
isc_hmacsha384_update(&hmacsha384, buffer, strlen(s));
isc_hmacsha384_sign(&hmacsha384, digest, ISC_SHA384_DIGESTLENGTH);
print_digest(s, "hmacsha384", digest, ISC_SHA384_DIGESTLENGTH/4);
s = "what do ya want for nothing?";
strcpy((char *)key, "Jefe");
isc_hmacsha384_init(&hmacsha384, key, 4);
memcpy(buffer, s, strlen(s));
isc_hmacsha384_update(&hmacsha384, buffer, strlen(s));
isc_hmacsha384_sign(&hmacsha384, digest, ISC_SHA384_DIGESTLENGTH);
print_digest(s, "hmacsha384", digest, ISC_SHA384_DIGESTLENGTH/4);
s = "\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335";
memset(key, 0xaa, 20);
isc_hmacsha384_init(&hmacsha384, key, 20);
memcpy(buffer, s, strlen(s));
isc_hmacsha384_update(&hmacsha384, buffer, strlen(s));
isc_hmacsha384_sign(&hmacsha384, digest, ISC_SHA384_DIGESTLENGTH);
print_digest(s, "hmacsha384", digest, ISC_SHA384_DIGESTLENGTH/4);
/*
* The 3 HMAC-SHA512 examples from RFC4634.
*/
s = "Hi There";
memset(key, 0x0b, 20);
isc_hmacsha512_init(&hmacsha512, key, 20);
memcpy(buffer, s, strlen(s));
isc_hmacsha512_update(&hmacsha512, buffer, strlen(s));
isc_hmacsha512_sign(&hmacsha512, digest, ISC_SHA512_DIGESTLENGTH);
print_digest(s, "hmacsha512", digest, ISC_SHA512_DIGESTLENGTH/4);
s = "what do ya want for nothing?";
strcpy((char *)key, "Jefe");
isc_hmacsha512_init(&hmacsha512, key, 4);
memcpy(buffer, s, strlen(s));
isc_hmacsha512_update(&hmacsha512, buffer, strlen(s));
isc_hmacsha512_sign(&hmacsha512, digest, ISC_SHA512_DIGESTLENGTH);
print_digest(s, "hmacsha512", digest, ISC_SHA512_DIGESTLENGTH/4);
s = "\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335"
"\335\335\335\335\335\335\335\335\335\335";
memset(key, 0xaa, 20);
isc_hmacsha512_init(&hmacsha512, key, 20);
memcpy(buffer, s, strlen(s));
isc_hmacsha512_update(&hmacsha512, buffer, strlen(s));
isc_hmacsha512_sign(&hmacsha512, digest, ISC_SHA512_DIGESTLENGTH);
print_digest(s, "hmacsha512", digest, ISC_SHA512_DIGESTLENGTH/4);
return (0);
}