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-rw-r--r--doc/man3/EVP_PKEY_check.pod5
1 files changed, 5 insertions, 0 deletions
diff --git a/doc/man3/EVP_PKEY_check.pod b/doc/man3/EVP_PKEY_check.pod
index a16fdbbd50..198a0923c5 100644
--- a/doc/man3/EVP_PKEY_check.pod
+++ b/doc/man3/EVP_PKEY_check.pod
@@ -61,6 +61,11 @@ It is not necessary to call these functions after locally calling an approved ke
generation method, but may be required for assurance purposes when receiving
keys from a third party.
+The EVP_PKEY_pairwise_check() and EVP_PKEY_private_check() might not be bounded
+by any key size limits as private keys are not expected to be supplied by
+attackers. For that reason they might take an unbounded time if run on
+arbitrarily large keys.
+
=head1 RETURN VALUES
All functions return 1 for success or others for failure.