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From ff2bfaa612704a7b8fb5126d450b596106421244 Mon Sep 17 00:00:00 2001
From: Ingo Franzki <ifranzki@linux.ibm.com>
Date: Fri, 18 Feb 2022 12:58:24 +0100
Subject: [PATCH 23/34] POLICY: Dilithium strength and signature size depends
on variant
Signed-off-by: Ingo Franzki <ifranzki@linux.ibm.com>
---
testcases/unit/unit.mk | 3 +-
usr/lib/api/api.mk | 1 +
usr/lib/api/mechtable.inc | 2 +-
usr/lib/api/policy.c | 65 +++++++++++++++++++++++++++++++++++++++++-
usr/lib/common/pqc_defs.h | 2 ++
usr/lib/common/pqc_supported.c | 27 ++++++++++++------
6 files changed, 88 insertions(+), 12 deletions(-)
diff --git a/testcases/unit/unit.mk b/testcases/unit/unit.mk
index accaebca..56ae3bcc 100644
--- a/testcases/unit/unit.mk
+++ b/testcases/unit/unit.mk
@@ -22,7 +22,8 @@ testcases_unit_policytest_SOURCES=testcases/unit/policytest.c \
usr/lib/common/kdf_translation.c \
usr/lib/common/mgf_translation.c \
usr/lib/api/supportedstrengths.c \
- usr/lib/config/cfgparse.y usr/lib/config/cfglex.l
+ usr/lib/config/cfgparse.y usr/lib/config/cfglex.l \
+ usr/lib/common/pqc_supported.c
nodist_testcases_unit_policytest_SOURCES=usr/lib/api/mechtable.c
diff --git a/usr/lib/api/api.mk b/usr/lib/api/api.mk
index 8ec4034e..f222dce7 100644
--- a/usr/lib/api/api.mk
+++ b/usr/lib/api/api.mk
@@ -30,6 +30,7 @@ opencryptoki_libopencryptoki_la_SOURCES = usr/lib/api/api_interface.c \
usr/lib/common/kdf_translation.c \
usr/lib/common/mgf_translation.c \
usr/lib/api/supportedstrengths.c \
+ usr/lib/common/pqc_supported.c \
usr/lib/config/cfgparse.y usr/lib/config/cfglex.l
nodist_opencryptoki_libopencryptoki_la_SOURCES = \
diff --git a/usr/lib/api/mechtable.inc b/usr/lib/api/mechtable.inc
index f74e08b7..e3d14e3e 100644
--- a/usr/lib/api/mechtable.inc
+++ b/usr/lib/api/mechtable.inc
@@ -78,7 +78,7 @@ const struct mechrow mechtable_rows[] =
{ "CKM_IBM_ATTRIBUTEBOUND_WRAP", CKM_IBM_ATTRIBUTEBOUND_WRAP, 0, MC_INFORMATION_UNAVAILABLE, MCF_WRAPUNWRAP | MCF_NEEDSPARAM },
{ "CKM_IBM_BTC_DERIVE", CKM_IBM_BTC_DERIVE, 0, MC_INFORMATION_UNAVAILABLE, MCF_DERIVE | MCF_NEEDSPARAM },
{ "CKM_IBM_CMAC", CKM_IBM_CMAC, 0, MC_KEY_DEPENDENT, MCF_SIGNVERIFY },
- { "CKM_IBM_DILITHIUM", CKM_IBM_DILITHIUM, 0, 3366, MCF_KEYGEN | MCF_SIGNVERIFY },
+ { "CKM_IBM_DILITHIUM", CKM_IBM_DILITHIUM, 0, MC_KEY_DEPENDENT, MCF_KEYGEN | MCF_SIGNVERIFY },
{ "CKM_IBM_ECDSA_OTHER", CKM_IBM_ECDSA_OTHER, 0, MC_KEY_DEPENDENT, MCF_SIGNVERIFY | MCF_NEEDSPARAM },
{ "CKM_IBM_EC_X25519", CKM_IBM_EC_X25519, 0, MC_INFORMATION_UNAVAILABLE, MCF_DERIVE },
{ "CKM_IBM_EC_X448", CKM_IBM_EC_X448, 0, MC_INFORMATION_UNAVAILABLE, MCF_DERIVE },
diff --git a/usr/lib/api/policy.c b/usr/lib/api/policy.c
index 82e799cd..4bee5180 100644
--- a/usr/lib/api/policy.c
+++ b/usr/lib/api/policy.c
@@ -25,6 +25,7 @@
#include <grp.h>
#include <errno.h>
#include <host_defs.h>
+#include <pqc_defs.h>
/* in h_extern.h, but not included since it creates too many unneeded
dependencies for unit tests. */
@@ -179,6 +180,65 @@ static CK_RV policy_get_curve_args(get_attr_val_f getattr, void *d,
return rv;
}
+static CK_RV policy_get_pqc_args(CK_KEY_TYPE key_type,
+ get_attr_val_f getattr, void *d,
+ free_attr_f free_attr, CK_ULONG *size,
+ CK_ULONG *siglen, const CK_BYTE **oid,
+ CK_ULONG *oidlen)
+{
+ CK_ATTRIBUTE_TYPE keyform_attr;
+ CK_ATTRIBUTE_TYPE mode_attr;
+ CK_ATTRIBUTE *keyform = NULL, *mode = NULL;
+ const struct pqc_oid *oids, *pqc_oid = NULL;
+ CK_RV rv;
+
+ switch (key_type) {
+ case CKK_IBM_PQC_DILITHIUM:
+ keyform_attr = CKA_IBM_DILITHIUM_KEYFORM;
+ mode_attr = CKA_IBM_DILITHIUM_MODE;
+ oids = dilithium_oids;
+ break;
+ case CKK_IBM_PQC_KYBER:
+ keyform_attr = CKA_IBM_KYBER_KEYFORM;
+ mode_attr = CKA_IBM_KYBER_MODE;
+ oids = kyber_oids;
+ break;
+ default:
+ TRACE_ERROR("Unsupported key type 0x%lx\n", key_type);
+ return CKR_KEY_TYPE_INCONSISTENT;
+ }
+
+ rv = getattr(d, keyform_attr, &keyform);
+ if (rv == CKR_OK && keyform->ulValueLen == sizeof(CK_ULONG)) {
+ pqc_oid = find_pqc_by_keyform(oids, *(CK_ULONG *)keyform->pValue);
+ } else {
+ rv = getattr(d, mode_attr, &mode);
+ if (rv == CKR_OK && mode->ulValueLen > 0)
+ pqc_oid = find_pqc_by_oid(oids, mode->pValue, mode->ulValueLen);
+ }
+ if (pqc_oid == NULL) {
+ TRACE_ERROR("Did not find KEYFORM or MODE for key type 0x%lx\n",
+ key_type);
+ rv = CKR_TEMPLATE_INCOMPLETE;
+ goto out;
+ }
+
+ *size = pqc_oid->policy_size;
+ *siglen = pqc_oid->policy_siglen;
+ *oid = pqc_oid->oid;
+ *oidlen = pqc_oid->oid_len;
+
+out:
+ if (free_attr) {
+ if (keyform)
+ free_attr(keyform);
+ if (mode)
+ free_attr(mode);
+ }
+
+ return rv;
+}
+
static CK_RV policy_extract_key_data(get_attr_val_f getattr, void *d,
free_attr_f free_attr,
CK_ULONG *comptarget, CK_ULONG *size,
@@ -273,7 +333,8 @@ static CK_RV policy_extract_key_data(get_attr_val_f getattr, void *d,
*comptarget = COMPARE_SYMMETRIC;
break;
case CKK_IBM_PQC_DILITHIUM:
- *size = 256;
+ rv = policy_get_pqc_args(*(CK_ULONG *)keytype->pValue, getattr, d,
+ free_attr, size, siglen, oid, oidlen);
*comptarget = COMPARE_PQC;
break;
/* POLICY: New CKK */
@@ -346,6 +407,8 @@ static CK_RV policy_get_sig_size(CK_MECHANISM_PTR mech, struct objstrength *s,
case CKM_RSA_X9_31:
/* Fallthrough */
case CKM_IBM_ED448_SHA3:
+ /* Fallthrough */
+ case CKM_IBM_DILITHIUM:
*ssize = s->siglen;
break;
case CKM_DSA_SHA1:
diff --git a/usr/lib/common/pqc_defs.h b/usr/lib/common/pqc_defs.h
index 51ee1200..947f86a7 100644
--- a/usr/lib/common/pqc_defs.h
+++ b/usr/lib/common/pqc_defs.h
@@ -35,6 +35,8 @@ struct pqc_oid {
const CK_BYTE *oid;
CK_ULONG oid_len;
CK_ULONG keyform;
+ CK_ULONG policy_size;
+ CK_ULONG policy_siglen;
};
extern const struct pqc_oid dilithium_oids[];
diff --git a/usr/lib/common/pqc_supported.c b/usr/lib/common/pqc_supported.c
index 4f048c33..77970352 100644
--- a/usr/lib/common/pqc_supported.c
+++ b/usr/lib/common/pqc_supported.c
@@ -25,16 +25,22 @@ const CK_ULONG dilithium_r3_87_len = sizeof(dilithium_r3_87);
const struct pqc_oid dilithium_oids[] = {
{ .oid = dilithium_r2_65, .oid_len = dilithium_r2_65_len,
- .keyform = CK_IBM_DILITHIUM_KEYFORM_ROUND2_65 },
+ .keyform = CK_IBM_DILITHIUM_KEYFORM_ROUND2_65,
+ .policy_size = 256, .policy_siglen = 3366 },
{ .oid = dilithium_r2_87, .oid_len = dilithium_r2_87_len,
- .keyform = CK_IBM_DILITHIUM_KEYFORM_ROUND2_87 },
+ .keyform = CK_IBM_DILITHIUM_KEYFORM_ROUND2_87,
+ .policy_size = 256, .policy_siglen = 4668 },
{ .oid = dilithium_r3_44, .oid_len = dilithium_r3_44_len,
- .keyform = CK_IBM_DILITHIUM_KEYFORM_ROUND3_44 },
+ .keyform = CK_IBM_DILITHIUM_KEYFORM_ROUND3_44,
+ .policy_size = 256, .policy_siglen = 2420 },
{ .oid = dilithium_r3_65, .oid_len = dilithium_r3_65_len,
- .keyform = CK_IBM_DILITHIUM_KEYFORM_ROUND3_65 },
+ .keyform = CK_IBM_DILITHIUM_KEYFORM_ROUND3_65,
+ .policy_size = 256, .policy_siglen = 3293 },
{ .oid = dilithium_r3_87, .oid_len = dilithium_r3_87_len,
- .keyform = CK_IBM_DILITHIUM_KEYFORM_ROUND3_87 },
- { .oid = NULL, .oid_len = 0, .keyform = 0 }
+ .keyform = CK_IBM_DILITHIUM_KEYFORM_ROUND3_87,
+ .policy_size = 256, .policy_siglen = 4595 },
+ { .oid = NULL, .oid_len = 0, .keyform = 0,
+ .policy_size = 0, .policy_siglen = 0 }
};
const CK_BYTE kyber_r2_768[] = OCK_KYBER_R2_768;
@@ -44,10 +50,13 @@ const CK_ULONG kyber_r2_1024_len = sizeof(kyber_r2_1024);
const struct pqc_oid kyber_oids[] = {
{ .oid = kyber_r2_768, .oid_len = kyber_r2_768_len,
- .keyform = CK_IBM_KYBER_KEYFORM_ROUND2_768 },
+ .keyform = CK_IBM_KYBER_KEYFORM_ROUND2_768,
+ .policy_size = 256, .policy_siglen = 0 },
{ .oid = kyber_r2_1024, .oid_len = kyber_r2_1024_len,
- .keyform = CK_IBM_KYBER_KEYFORM_ROUND2_1024 },
- { .oid = NULL, .oid_len = 0, .keyform = 0 }
+ .keyform = CK_IBM_KYBER_KEYFORM_ROUND2_1024,
+ .policy_size = 256, .policy_siglen = 0 },
+ { .oid = NULL, .oid_len = 0, .keyform = 0,
+ .policy_size = 0, .policy_siglen = 0 }
};
const struct pqc_oid *find_pqc_by_keyform(const struct pqc_oid *pqcs,
--
2.16.2.windows.1
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