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hcrypto: Fix integer undeflow in rsa-ltm.c

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This commit is contained in:
Nicolas Williams
2023-01-03 20:43:15 -06:00
parent 274b683d76
commit 86af011f0b
1 changed files with 8 additions and 8 deletions
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16
lib/hcrypto/rsa-ltm.c
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@@ -41,7 +41,7 @@
#include "tommath.h"
#define CHECK(f) \
do { if (ret == MP_OKAY && ((ret = f)) != MP_OKAY) { goto out; } } while (0)
do { where = __LINE__ + 1; if (ret == MP_OKAY && ((ret = f)) != MP_OKAY) { goto out; } } while (0)
#define FIRST(e) do { ret = (e); } while (0)
#define FIRST_ALLOC(e) \
do { where = __LINE__; ret = ((e)) ? MP_OKAY : MP_MEM; } while (0)
@@ -50,9 +50,9 @@
#define THEN_IF_MP(cond, e) \
do { where = __LINE__ + 1; if (ret == MP_OKAY && (cond)) ret = (e); } while (0)
#define THEN_IF_VOID(cond, e) \
do { if (ret == MP_OKAY && (cond)) e; } while (0)
do { where = __LINE__ + 1; if (ret == MP_OKAY && (cond)) e; } while (0)
#define THEN_VOID(e) \
do { if (ret == MP_OKAY) e; } while (0)
do { where = __LINE__ + 1; if (ret == MP_OKAY) e; } while (0)
#define THEN_ALLOC(e) \
do { where = __LINE__ + 1; if (ret == MP_OKAY) ret = ((e)) ? MP_OKAY : MP_MEM; } while (0)
@@ -226,7 +226,7 @@ ltm_rsa_public_decrypt(int flen, const unsigned char* from,
mp_err ret;
size_t size;
mp_int s, us, n, e;
int where = 0;
int where = __LINE__;
if (padding != RSA_PKCS1_PADDING)
return -1;
@@ -250,7 +250,7 @@ ltm_rsa_public_decrypt(int flen, const unsigned char* from,
mp_clear_multi(&e, &n, &s, NULL);
mp_clear(&us);
if (ret != MP_OKAY)
if (ret != MP_OKAY || size == 0)
return -where;
/* head zero was skipped by mp_to_unsigned_bin */
@@ -280,7 +280,7 @@ ltm_rsa_private_encrypt(int flen, const unsigned char* from,
size_t size;
int blinding = (rsa->flags & RSA_FLAG_NO_BLINDING) == 0;
int do_unblind = 0;
int where = 0;
int where = __LINE__;
if (padding != RSA_PKCS1_PADDING)
return -1;
@@ -367,7 +367,7 @@ ltm_rsa_private_decrypt(int flen, const unsigned char* from,
mp_int in, out, n, e, b, bi;
int blinding = (rsa->flags & RSA_FLAG_NO_BLINDING) == 0;
int do_unblind = 0;
int where = 0;
int where = __LINE__;
if (padding != RSA_PKCS1_PADDING)
return -1;
@@ -530,7 +530,7 @@ ltm_rsa_generate_key(RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb)
mp_err ret;
uint8_t high_nibbles = 0;
int bitsp;
int where = 0;
int where = __LINE__;
if (bits < 789)
return -1;