diff --git a/include/mbedtls/pk.h b/include/mbedtls/pk.h
index 7b41321..f218558 100644
--- a/include/mbedtls/pk.h
+++ b/include/mbedtls/pk.h
@@ -585,6 +585,7 @@
  *                        set for the underlying PSA key, except that
  *                        sign/decrypt flags are removed if the type is
  *                        set to a public key type.
+ *                        The underlying key must allow \p usage.
  *                        Note that the enrollment algorithm set with
  *                        psa_set_key_enrollment_algorithm() is not copied.
  *
diff --git a/library/pk.c b/library/pk.c
index 80e30be..3b9c537 100644
--- a/library/pk.c
+++ b/library/pk.c
@@ -564,6 +564,9 @@
                 new_type = PSA_KEY_TYPE_PUBLIC_KEY_OF_KEY_PAIR(new_type);
             }
             more_usage = psa_get_key_usage_flags(&old_attributes);
+            if ((usage & more_usage) == 0) {
+                return MBEDTLS_ERR_PK_TYPE_MISMATCH;
+            }
             psa_set_key_type(attributes, new_type);
             psa_set_key_bits(attributes, psa_get_key_bits(&old_attributes));
             psa_set_key_algorithm(attributes, psa_get_key_algorithm(&old_attributes));
diff --git a/tests/suites/test_suite_pk.data b/tests/suites/test_suite_pk.data
index 204f58c..0858163 100644
--- a/tests/suites/test_suite_pk.data
+++ b/tests/suites/test_suite_pk.data
@@ -988,9 +988,9 @@
 depends_on:MBEDTLS_PK_HAVE_ECC_KEYS
 pk_get_psa_attributes_fail:MBEDTLS_PK_ECKEY_DH:0:PSA_KEY_USAGE_VERIFY_HASH:MBEDTLS_ERR_PK_TYPE_MISMATCH
 
-PSA attributes for pk: opaque RSA pair, 0 & SIGN_MESSAGE
+PSA attributes for pk: opaque RSA pair, 0 & SIGN_MESSAGE (bad policy)
 depends_on:MBEDTLS_RSA_C:MBEDTLS_GENPRIME
-pk_get_psa_attributes_opaque:PSA_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_RSA_GEN_KEY_MIN_BITS:0:PSA_ALG_RSA_PKCS1V15_SIGN_RAW:PSA_KEY_USAGE_SIGN_MESSAGE:0:1:0
+pk_get_psa_attributes_opaque:PSA_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_RSA_GEN_KEY_MIN_BITS:0:PSA_ALG_RSA_PKCS1V15_SIGN_RAW:PSA_KEY_USAGE_SIGN_MESSAGE:MBEDTLS_ERR_PK_TYPE_MISMATCH:1:0
 
 PSA attributes for pk: opaque RSA pair, SIGN_MESSAGE & SIGN_MESSAGE
 depends_on:MBEDTLS_RSA_C:MBEDTLS_GENPRIME
@@ -1008,23 +1008,31 @@
 depends_on:MBEDTLS_RSA_C:MBEDTLS_GENPRIME
 pk_get_psa_attributes_opaque:PSA_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_RSA_GEN_KEY_MIN_BITS:PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE | PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_COPY | PSA_KEY_USAGE_DECRYPT | PSA_KEY_USAGE_ENCRYPT:PSA_ALG_RSA_PKCS1V15_SIGN_RAW:PSA_KEY_USAGE_SIGN_MESSAGE:0:1:PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE | PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_COPY | PSA_KEY_USAGE_DECRYPT | PSA_KEY_USAGE_ENCRYPT
 
+PSA attributes for pk: opaque RSA pair, SIGN_MESSAGE & SIGN_HASH (bad policy)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_GENPRIME
+pk_get_psa_attributes_opaque:PSA_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_RSA_GEN_KEY_MIN_BITS:PSA_KEY_USAGE_SIGN_MESSAGE:PSA_ALG_RSA_PKCS1V15_SIGN_RAW:PSA_KEY_USAGE_SIGN_HASH:MBEDTLS_ERR_PK_TYPE_MISMATCH:1:0
+
 # For a PK_OPAQUE key, mbedtls_pk_get_psa_attributes() ignores the input
 # key's algorithm policy. Just this time, test with a few different algorithms.
-PSA attributes for pk: opaque RSA pair, 0 & SIGN_HASH [0]
+PSA attributes for pk: opaque RSA pair, SIGN_HASH & SIGN_HASH [0]
 depends_on:MBEDTLS_RSA_C:MBEDTLS_GENPRIME
-pk_get_psa_attributes_opaque:PSA_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_RSA_GEN_KEY_MIN_BITS:0:PSA_ALG_NONE:PSA_KEY_USAGE_SIGN_HASH:0:1:0
+pk_get_psa_attributes_opaque:PSA_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_RSA_GEN_KEY_MIN_BITS:PSA_KEY_USAGE_SIGN_HASH:PSA_ALG_NONE:PSA_KEY_USAGE_SIGN_HASH:0:1:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_SIGN_MESSAGE
 
-PSA attributes for pk: opaque RSA pair, 0 & SIGN_HASH [raw]
+PSA attributes for pk: opaque RSA pair, SIGN_HASH & SIGN_HASH [raw]
 depends_on:MBEDTLS_RSA_C:MBEDTLS_GENPRIME
-pk_get_psa_attributes_opaque:PSA_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_RSA_GEN_KEY_MIN_BITS:0:PSA_ALG_RSA_PKCS1V15_SIGN_RAW:PSA_KEY_USAGE_SIGN_HASH:0:1:0
+pk_get_psa_attributes_opaque:PSA_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_RSA_GEN_KEY_MIN_BITS:PSA_KEY_USAGE_SIGN_HASH:PSA_ALG_RSA_PKCS1V15_SIGN_RAW:PSA_KEY_USAGE_SIGN_HASH:0:1:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_SIGN_MESSAGE
 
-PSA attributes for pk: opaque RSA pair, 0 & SIGN_HASH [v15]
+PSA attributes for pk: opaque RSA pair, SIGN_HASH & SIGN_HASH [v15]
 depends_on:MBEDTLS_RSA_C:MBEDTLS_GENPRIME
-pk_get_psa_attributes_opaque:PSA_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_RSA_GEN_KEY_MIN_BITS:0:PSA_ALG_RSA_PKCS1V15_SIGN_RAW:PSA_KEY_USAGE_SIGN_HASH:0:1:0
+pk_get_psa_attributes_opaque:PSA_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_RSA_GEN_KEY_MIN_BITS:PSA_KEY_USAGE_SIGN_HASH:PSA_ALG_RSA_PKCS1V15_SIGN_RAW:PSA_KEY_USAGE_SIGN_HASH:0:1:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_SIGN_MESSAGE
 
-PSA attributes for pk: opaque RSA pair, 0 & SIGN_HASH [PSS]
+PSA attributes for pk: opaque RSA pair, SIGN_HASH & SIGN_HASH [PSS]
 depends_on:MBEDTLS_RSA_C:MBEDTLS_GENPRIME
-pk_get_psa_attributes_opaque:PSA_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_RSA_GEN_KEY_MIN_BITS:0:PSA_ALG_RSA_PSS_ANY_SALT(PSA_ALG_SHA_256):PSA_KEY_USAGE_SIGN_HASH:0:1:0
+pk_get_psa_attributes_opaque:PSA_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_RSA_GEN_KEY_MIN_BITS:PSA_KEY_USAGE_SIGN_HASH:PSA_ALG_RSA_PSS_ANY_SALT(PSA_ALG_SHA_256):PSA_KEY_USAGE_SIGN_HASH:0:1:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_SIGN_MESSAGE
+
+PSA attributes for pk: opaque RSA pair, 0 & DECRYPT (bad policy)
+depends_on:MBEDTLS_RSA_C:MBEDTLS_GENPRIME
+pk_get_psa_attributes_opaque:PSA_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_RSA_GEN_KEY_MIN_BITS:0:PSA_ALG_RSA_PKCS1V15_CRYPT:PSA_KEY_USAGE_DECRYPT:MBEDTLS_ERR_PK_TYPE_MISMATCH:1:0
 
 PSA attributes for pk: opaque RSA pair, DECRYPT & DECRYPT
 depends_on:MBEDTLS_RSA_C:MBEDTLS_GENPRIME
@@ -1042,21 +1050,21 @@
 depends_on:MBEDTLS_RSA_C:MBEDTLS_GENPRIME
 pk_get_psa_attributes_opaque:PSA_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_RSA_GEN_KEY_MIN_BITS:PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE | PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_COPY | PSA_KEY_USAGE_DECRYPT | PSA_KEY_USAGE_ENCRYPT:PSA_ALG_RSA_PKCS1V15_CRYPT:PSA_KEY_USAGE_EXPORT:MBEDTLS_ERR_PK_TYPE_MISMATCH:1:0
 
-PSA attributes for pk: opaque RSA pair->public, 0 & VERIFY_MESSAGE
+PSA attributes for pk: opaque RSA pair->public, VERIFY_MESSAGE & VERIFY_MESSAGE
 depends_on:MBEDTLS_RSA_C:MBEDTLS_GENPRIME
-pk_get_psa_attributes_opaque:PSA_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_RSA_GEN_KEY_MIN_BITS:0:PSA_ALG_RSA_PKCS1V15_SIGN_RAW:PSA_KEY_USAGE_VERIFY_MESSAGE:0:0:0
+pk_get_psa_attributes_opaque:PSA_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_RSA_GEN_KEY_MIN_BITS:PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_RSA_PKCS1V15_SIGN_RAW:PSA_KEY_USAGE_VERIFY_MESSAGE:0:0:PSA_KEY_USAGE_VERIFY_MESSAGE
 
-PSA attributes for pk: opaque RSA pair->public, 0 & VERIFY_HASH
+PSA attributes for pk: opaque RSA pair->public, VERIFY_HASH & VERIFY_HASH
 depends_on:MBEDTLS_RSA_C:MBEDTLS_GENPRIME
-pk_get_psa_attributes_opaque:PSA_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_RSA_GEN_KEY_MIN_BITS:0:PSA_ALG_RSA_PKCS1V15_SIGN_RAW:PSA_KEY_USAGE_VERIFY_HASH:0:0:0
+pk_get_psa_attributes_opaque:PSA_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_RSA_GEN_KEY_MIN_BITS:PSA_KEY_USAGE_VERIFY_HASH:PSA_ALG_RSA_PKCS1V15_SIGN_RAW:PSA_KEY_USAGE_VERIFY_HASH:0:0:PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_VERIFY_MESSAGE
 
-PSA attributes for pk: opaque RSA pair->public, 0 & ENCRYPT
+PSA attributes for pk: opaque RSA pair->public, ENCRYPT & ENCRYPT
 depends_on:MBEDTLS_RSA_C:MBEDTLS_GENPRIME
-pk_get_psa_attributes_opaque:PSA_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_RSA_GEN_KEY_MIN_BITS:0:PSA_ALG_RSA_PKCS1V15_CRYPT:PSA_KEY_USAGE_ENCRYPT:0:0:0
+pk_get_psa_attributes_opaque:PSA_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_RSA_GEN_KEY_MIN_BITS:PSA_KEY_USAGE_ENCRYPT:PSA_ALG_RSA_PKCS1V15_CRYPT:PSA_KEY_USAGE_ENCRYPT:0:0:PSA_KEY_USAGE_ENCRYPT
 
-PSA attributes for pk: opaque ECC pair, 0 & SIGN_MESSAGE
+PSA attributes for pk: opaque ECC pair, 0 & SIGN_MESSAGE (bad policy)
 depends_on:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_GENERATE:PSA_WANT_ECC_FAMILY_SECP_R1_256
-pk_get_psa_attributes_opaque:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):256:0:PSA_ALG_ECDSA_ANY:PSA_KEY_USAGE_SIGN_MESSAGE:0:1:0
+pk_get_psa_attributes_opaque:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):256:0:PSA_ALG_ECDSA_ANY:PSA_KEY_USAGE_SIGN_MESSAGE:MBEDTLS_ERR_PK_TYPE_MISMATCH:1:0
 
 PSA attributes for pk: opaque ECC pair, SIGN_MESSAGE & SIGN_MESSAGE
 depends_on:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_GENERATE:PSA_WANT_ECC_FAMILY_SECP_R1_256
@@ -1074,9 +1082,9 @@
 depends_on:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_GENERATE:PSA_WANT_ECC_FAMILY_SECP_R1_256
 pk_get_psa_attributes_opaque:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):256:PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE | PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_COPY | PSA_KEY_USAGE_DECRYPT | PSA_KEY_USAGE_ENCRYPT:PSA_ALG_ECDSA_ANY:PSA_KEY_USAGE_SIGN_MESSAGE:0:1:PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE | PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_COPY | PSA_KEY_USAGE_DECRYPT | PSA_KEY_USAGE_ENCRYPT
 
-PSA attributes for pk: opaque ECC pair, 0 & SIGN_HASH
+PSA attributes for pk: opaque ECC pair, SIGN_HASH & SIGN_HASH
 depends_on:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_GENERATE:PSA_WANT_ECC_FAMILY_SECP_R1_256
-pk_get_psa_attributes_opaque:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):256:0:PSA_ALG_ECDSA_ANY:PSA_KEY_USAGE_SIGN_HASH:0:1:0
+pk_get_psa_attributes_opaque:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):256:PSA_KEY_USAGE_SIGN_HASH:PSA_ALG_ECDSA_ANY:PSA_KEY_USAGE_SIGN_HASH:0:1:PSA_KEY_USAGE_SIGN_HASH
 
 PSA attributes for pk: opaque ECC pair, ... & DERIVE
 depends_on:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_GENERATE:PSA_WANT_ECC_FAMILY_SECP_R1_256
@@ -1090,14 +1098,14 @@
 depends_on:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_GENERATE:PSA_WANT_ECC_FAMILY_SECP_R1_256
 pk_get_psa_attributes_opaque:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):256:PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE | PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_COPY | PSA_KEY_USAGE_DECRYPT | PSA_KEY_USAGE_ENCRYPT:PSA_ALG_ECDH:PSA_KEY_USAGE_EXPORT:MBEDTLS_ERR_PK_TYPE_MISMATCH:1:0
 
-PSA attributes for pk: opaque ECC pair->public, 0 & VERIFY_MESSAGE
+PSA attributes for pk: opaque ECC pair->public, VERIFY_MESSAGE & VERIFY_MESSAGE
 depends_on:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_GENERATE:PSA_WANT_ECC_FAMILY_SECP_R1_256
-pk_get_psa_attributes_opaque:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):256:0:PSA_ALG_ECDSA_ANY:PSA_KEY_USAGE_VERIFY_MESSAGE:0:0:0
+pk_get_psa_attributes_opaque:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):256:PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_ECDSA_ANY:PSA_KEY_USAGE_VERIFY_MESSAGE:0:0:PSA_KEY_USAGE_VERIFY_MESSAGE
 
-PSA attributes for pk: opaque ECC pair->public, 0 & VERIFY_HASH
+PSA attributes for pk: opaque ECC pair->public, VERIFY_HASH & VERIFY_HASH
 depends_on:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_GENERATE:PSA_WANT_ECC_FAMILY_SECP_R1_256
-pk_get_psa_attributes_opaque:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):256:0:PSA_ALG_ECDSA_ANY:PSA_KEY_USAGE_VERIFY_HASH:0:0:0
+pk_get_psa_attributes_opaque:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):256:PSA_KEY_USAGE_VERIFY_HASH:PSA_ALG_ECDSA_ANY:PSA_KEY_USAGE_VERIFY_HASH:0:0:PSA_KEY_USAGE_VERIFY_HASH
 
-PSA attributes for pk: opaque ECC pair->public, 0 & ENCRYPT (bad)
+PSA attributes for pk: opaque ECC pair->public, ENCRYPT & ENCRYPT (bad)
 depends_on:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_GENERATE:PSA_WANT_ECC_FAMILY_SECP_R1_256
-pk_get_psa_attributes_opaque:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):256:0:PSA_ALG_ECDSA_ANY:PSA_KEY_USAGE_ENCRYPT:MBEDTLS_ERR_PK_TYPE_MISMATCH:0:0
+pk_get_psa_attributes_opaque:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):256:PSA_KEY_USAGE_ENCRYPT:PSA_ALG_ECDSA_ANY:PSA_KEY_USAGE_ENCRYPT:MBEDTLS_ERR_PK_TYPE_MISMATCH:0:0