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diff -up ./lib/softoken/kbkdf.c.kdf_update ./lib/softoken/kbkdf.c
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--- ./lib/softoken/kbkdf.c.kdf_update 2019-11-27 16:48:01.864135431 -0800
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+++ ./lib/softoken/kbkdf.c 2019-11-27 16:48:51.779661708 -0800
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@@ -160,6 +160,9 @@ static CK_RV kbkdf_ValidateParameter(CK_
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/* There is no additional data to validate for byte arrays; we can
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* only assume the context is of the correct size. */
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break;
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+ default:
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+ /* don't allow unknown types */
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+ return CKR_MECHANISM_PARAM_INVALID;
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}
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return CKR_OK;
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@@ -250,14 +253,16 @@ static CK_RV kbkdf_ValidateParameters(CK
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return CKR_MECHANISM_PARAM_INVALID;
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}
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- /* Count that we have a parameter of this type. */
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- param_type_count[params->pDataParams[offset].type] += 1;
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-
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/* Validate this parameter has acceptable values. */
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ret = kbkdf_ValidateParameter(mech, params->pDataParams + offset);
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if (ret != CKR_OK) {
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- return CKR_MECHANISM_PARAM_INVALID;
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+ return ret;
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}
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+ /* Count that we have a parameter of this type. */
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+ /* Do this after we've validated the param to make sure we don't
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+ * overflow our array */
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+ PORT_Assert(params->pDataParams[offset].type < sizeof(param_type_count)/sizeof(param_type_count[0]));
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+ param_type_count[params->pDataParams[offset].type] += 1;
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}
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if (mech == CKM_SP800_108_COUNTER_KDF || mech == CKM_NSS_SP800_108_COUNTER_KDF_DERIVE_DATA) {
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@@ -306,18 +311,20 @@ static CK_RV kbkdf_ValidateParameters(CK
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/* [ section: parameter helpers ] */
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static void kbkdf_EncodeInteger(uint64_t integer, CK_ULONG num_bits, CK_BBOOL littleEndian, CK_BYTE_PTR output, CK_ULONG_PTR output_len) {
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- uint64_t reordered;
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+ CK_ULONG num_bytes = num_bits/8;
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+ CK_ULONG i;
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if (output_len) {
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- *output_len = (num_bits / 8);
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+ *output_len = num_bytes;
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}
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if (littleEndian == CK_TRUE) {
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- reordered = htole64(integer);
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- memcpy(output, &reordered, num_bits/8);
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+ for (i=0; i < num_bytes; i++) {
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+ output[i] = (integer >> i*8) & 0xff;
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+ }
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} else {
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- reordered = htobe64(integer);
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- reordered = reordered >> (64 - num_bits);
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- memcpy(output, &reordered, (num_bits/8));
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+ for (i=num_bytes; i > 0; i--) {
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+ output[num_bytes-i] = (integer >> (i-1)*8) & 0xff;
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+ }
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}
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}
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ddf7d0 |
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