Blame 0091-FIPS-RSA-encapsulate.patch
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From afab56d09edb525dd794fcb2ae2295ab7f39400a Mon Sep 17 00:00:00 2001
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From: Dmitry Belyavskiy <dbelyavs@redhat.com>
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Date: Mon, 21 Aug 2023 16:01:48 +0200
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Subject: [PATCH 42/48] 0091-FIPS-RSA-encapsulate.patch
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Patch-name: 0091-FIPS-RSA-encapsulate.patch
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Patch-id: 91
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---
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providers/implementations/kem/rsa_kem.c | 15 +++++++++++++++
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1 file changed, 15 insertions(+)
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diff --git a/providers/implementations/kem/rsa_kem.c b/providers/implementations/kem/rsa_kem.c
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index 365ae3d7d6..8a6f585d0b 100644
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--- a/providers/implementations/kem/rsa_kem.c
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+++ b/providers/implementations/kem/rsa_kem.c
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@@ -265,6 +265,14 @@ static int rsasve_generate(PROV_RSA_CTX *prsactx,
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*secretlen = nlen;
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return 1;
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}
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+
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+#ifdef FIPS_MODULE
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+ if (nlen < OPENSSL_RSA_FIPS_MIN_MODULUS_BITS/8) {
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+ ERR_raise(ERR_LIB_PROV, PROV_R_KEY_SIZE_TOO_SMALL);
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+ return 0;
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+ }
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+#endif
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+
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/*
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* Step (2): Generate a random byte string z of nlen bytes where
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* 1 < z < n - 1
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@@ -308,6 +316,13 @@ static int rsasve_recover(PROV_RSA_CTX *prsactx,
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return 1;
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}
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+#ifdef FIPS_MODULE
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+ if (nlen < OPENSSL_RSA_FIPS_MIN_MODULUS_BITS/8) {
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+ ERR_raise(ERR_LIB_PROV, PROV_R_KEY_SIZE_TOO_SMALL);
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+ return 0;
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+ }
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+#endif
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+
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/* Step (2): check the input ciphertext 'inlen' matches the nlen */
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if (inlen != nlen) {
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ERR_raise(ERR_LIB_PROV, PROV_R_BAD_LENGTH);
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--
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2.41.0
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