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path: root/lib/dns/pkcs11rsa_link.c
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Diffstat (limited to 'lib/dns/pkcs11rsa_link.c')
-rw-r--r--lib/dns/pkcs11rsa_link.c79
1 files changed, 57 insertions, 22 deletions
diff --git a/lib/dns/pkcs11rsa_link.c b/lib/dns/pkcs11rsa_link.c
index 0473acd7..480a24ab 100644
--- a/lib/dns/pkcs11rsa_link.c
+++ b/lib/dns/pkcs11rsa_link.c
@@ -309,7 +309,7 @@ pkcs11rsa_createctx_verify(dst_key_t *key, unsigned int maxbits,
key->key_alg == DST_ALG_NSEC3RSASHA1 ||
key->key_alg == DST_ALG_RSASHA256 ||
key->key_alg == DST_ALG_RSASHA512);
-
+ REQUIRE(maxbits <= RSA_MAX_PUBEXP_BITS);
/*
* Reject incorrect RSA key lengths.
*/
@@ -352,6 +352,7 @@ pkcs11rsa_createctx_verify(dst_key_t *key, unsigned int maxbits,
for (attr = pk11_attribute_first(rsa);
attr != NULL;
attr = pk11_attribute_next(rsa, attr))
+ {
switch (attr->type) {
case CKA_MODULUS:
INSIST(keyTemplate[5].type == attr->type);
@@ -372,12 +373,16 @@ pkcs11rsa_createctx_verify(dst_key_t *key, unsigned int maxbits,
memmove(keyTemplate[6].pValue, attr->pValue,
attr->ulValueLen);
keyTemplate[6].ulValueLen = attr->ulValueLen;
- if (pk11_numbits(attr->pValue,
- attr->ulValueLen) > maxbits &&
- maxbits != 0)
+ unsigned int bits;
+ ret = pk11_numbits(attr->pValue, attr->ulValueLen,
+ &bits);
+ if (ret != ISC_R_SUCCESS ||
+ (bits > maxbits && maxbits != 0)) {
DST_RET(DST_R_VERIFYFAILURE);
+ }
break;
}
+ }
pk11_ctx->object = CK_INVALID_HANDLE;
pk11_ctx->ontoken = false;
PK11_RET(pkcs_C_CreateObject,
@@ -1386,6 +1391,8 @@ pkcs11rsa_fromdns(dst_key_t *key, isc_buffer_t *data) {
CK_BYTE *exponent = NULL, *modulus = NULL;
CK_ATTRIBUTE *attr;
unsigned int length;
+ unsigned int bits;
+ isc_result_t ret = ISC_R_SUCCESS;
isc_buffer_remainingregion(data, &r);
if (r.length == 0)
@@ -1403,9 +1410,7 @@ pkcs11rsa_fromdns(dst_key_t *key, isc_buffer_t *data) {
if (e_bytes == 0) {
if (r.length < 2) {
- isc_safe_memwipe(rsa, sizeof(*rsa));
- isc_mem_put(key->mctx, rsa, sizeof(*rsa));
- return (DST_R_INVALIDPUBLICKEY);
+ DST_RET(DST_R_INVALIDPUBLICKEY);
}
e_bytes = (*r.base) << 8;
isc_region_consume(&r, 1);
@@ -1414,17 +1419,18 @@ pkcs11rsa_fromdns(dst_key_t *key, isc_buffer_t *data) {
}
if (r.length < e_bytes) {
- isc_safe_memwipe(rsa, sizeof(*rsa));
- isc_mem_put(key->mctx, rsa, sizeof(*rsa));
- return (DST_R_INVALIDPUBLICKEY);
+ DST_RET(DST_R_INVALIDPUBLICKEY);
}
exponent = r.base;
isc_region_consume(&r, e_bytes);
modulus = r.base;
mod_bytes = r.length;
- key->key_size = pk11_numbits(modulus, mod_bytes);
-
+ ret = pk11_numbits(modulus, mod_bytes, &bits);
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+ key->key_size = bits;
isc_buffer_forward(data, length);
rsa->repr = (CK_ATTRIBUTE *) isc_mem_get(key->mctx, sizeof(*attr) * 2);
@@ -1450,7 +1456,7 @@ pkcs11rsa_fromdns(dst_key_t *key, isc_buffer_t *data) {
return (ISC_R_SUCCESS);
- nomemory:
+ nomemory:
for (attr = pk11_attribute_first(rsa);
attr != NULL;
attr = pk11_attribute_next(rsa, attr))
@@ -1476,6 +1482,11 @@ pkcs11rsa_fromdns(dst_key_t *key, isc_buffer_t *data) {
isc_safe_memwipe(rsa, sizeof(*rsa));
isc_mem_put(key->mctx, rsa, sizeof(*rsa));
return (ISC_R_NOMEMORY);
+
+ err:
+ isc_safe_memwipe(rsa, sizeof(*rsa));
+ isc_mem_put(key->mctx, rsa, sizeof(*rsa));
+ return (ret)
}
static isc_result_t
@@ -1654,6 +1665,7 @@ pkcs11rsa_fetch(dst_key_t *key, const char *engine, const char *label,
pk11_object_t *pubrsa;
pk11_context_t *pk11_ctx = NULL;
isc_result_t ret;
+ unsigned int bits;
if (label == NULL)
return (DST_R_NOENGINE);
@@ -1740,7 +1752,11 @@ pkcs11rsa_fetch(dst_key_t *key, const char *engine, const char *label,
attr = pk11_attribute_bytype(rsa, CKA_MODULUS);
INSIST(attr != NULL);
- key->key_size = pk11_numbits(attr->pValue, attr->ulValueLen);
+ ret = pk11_numbits(attr->pValue, attr->ulValueLen, &bits);
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+ key->key_size = bits;
return (ISC_R_SUCCESS);
@@ -1826,6 +1842,7 @@ pkcs11rsa_parse(dst_key_t *key, isc_lex_t *lexer, dst_key_t *pub) {
CK_ATTRIBUTE *attr;
isc_mem_t *mctx = key->mctx;
const char *engine = NULL, *label = NULL;
+ unsigned int bits;
/* read private key file */
ret = dst__privstruct_parse(key, DST_ALG_RSA, lexer, mctx, &priv);
@@ -1969,13 +1986,21 @@ pkcs11rsa_parse(dst_key_t *key, isc_lex_t *lexer, dst_key_t *pub) {
attr = pk11_attribute_bytype(rsa, CKA_MODULUS);
INSIST(attr != NULL);
- key->key_size = pk11_numbits(attr->pValue, attr->ulValueLen);
-
+ ret = pk11_numbits(attr->pValue, attr->ulValueLen, &bits);
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+ key->key_size = bits;
attr = pk11_attribute_bytype(rsa, CKA_PUBLIC_EXPONENT);
INSIST(attr != NULL);
- if (pk11_numbits(attr->pValue, attr->ulValueLen) > RSA_MAX_PUBEXP_BITS)
- DST_RET(ISC_R_RANGE);
+ ret = pk11_numbits(attr->pValue, attr->ulValueLen, &bits);
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+ if (bits > RSA_MAX_PUBEXP_BITS) {
+ DST_RET(ISC_R_RANGE);
+ }
dst__privstruct_free(&priv, mctx);
isc_safe_memwipe(&priv, sizeof(priv));
@@ -2009,6 +2034,7 @@ pkcs11rsa_fromlabel(dst_key_t *key, const char *engine, const char *label,
pk11_context_t *pk11_ctx = NULL;
isc_result_t ret;
unsigned int i;
+ unsigned int bits;
UNUSED(pin);
@@ -2103,13 +2129,22 @@ pkcs11rsa_fromlabel(dst_key_t *key, const char *engine, const char *label,
attr = pk11_attribute_bytype(rsa, CKA_PUBLIC_EXPONENT);
INSIST(attr != NULL);
- if (pk11_numbits(attr->pValue, attr->ulValueLen) > RSA_MAX_PUBEXP_BITS)
- DST_RET(ISC_R_RANGE);
+ ret = pk11_numbits(attr->pValue, attr->ulValueLen, &bits);
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+ if (bits > RSA_MAX_PUBEXP_BITS) {
+ DST_RET(ISC_R_RANGE);
+ }
attr = pk11_attribute_bytype(rsa, CKA_MODULUS);
INSIST(attr != NULL);
- key->key_size = pk11_numbits(attr->pValue, attr->ulValueLen);
-
+ ret = pk11_numbits(attr->pValue, attr->ulValueLen, &bits);
+ if (ret != ISC_R_SUCCESS) {
+ goto err;
+ }
+ key->key_size = bits;
+
pk11_return_session(pk11_ctx);
isc_safe_memwipe(pk11_ctx, sizeof(*pk11_ctx));
isc_mem_put(key->mctx, pk11_ctx, sizeof(*pk11_ctx));
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-30 09:28:09 +0000