openssl/0091-FIPS-RSA-encapsulate.patch
Clemens Lang c0667361a5 Fix explicit indicator for PSS salt length
The previous state of the patch did not work correctly when used with
negative salt lengths, which OpenSSL uses a magic values. Setting the
saltlength to max would yield an approved state in the indicator, while
it is not approved.

Additionally, update the patch to change the default PSS salt length
with the current state of discussion upstream (see
https://github.com/openssl/openssl/pull/19724).

Resolves: rhbz#2142087
Signed-off-by: Clemens Lang <cllang@redhat.com>
2022-11-29 13:23:25 +01:00

33 lines
1.1 KiB
Diff

diff -up openssl-3.0.1/providers/implementations/kem/rsa_kem.c.encap openssl-3.0.1/providers/implementations/kem/rsa_kem.c
--- openssl-3.0.1/providers/implementations/kem/rsa_kem.c.encap 2022-11-22 12:27:30.994530801 +0100
+++ openssl-3.0.1/providers/implementations/kem/rsa_kem.c 2022-11-22 12:32:15.916875495 +0100
@@ -264,6 +264,14 @@ static int rsasve_generate(PROV_RSA_CTX
*secretlen = nlen;
return 1;
}
+
+#ifdef FIPS_MODULE
+ if (nlen < OPENSSL_RSA_FIPS_MIN_MODULUS_BITS/8) {
+ ERR_raise(ERR_LIB_PROV, PROV_R_KEY_SIZE_TOO_SMALL);
+ return 0;
+ }
+#endif
+
/*
* Step (2): Generate a random byte string z of nlen bytes where
* 1 < z < n - 1
@@ -307,6 +315,13 @@ static int rsasve_recover(PROV_RSA_CTX *
return 1;
}
+#ifdef FIPS_MODULE
+ if (nlen < OPENSSL_RSA_FIPS_MIN_MODULUS_BITS/8) {
+ ERR_raise(ERR_LIB_PROV, PROV_R_KEY_SIZE_TOO_SMALL);
+ return 0;
+ }
+#endif
+
/* Step (2): check the input ciphertext 'inlen' matches the nlen */
if (inlen != nlen) {
ERR_raise(ERR_LIB_PROV, PROV_R_BAD_LENGTH);