1 files changed, 11 insertions, 0 deletions

diff --git a/src/lib/libcrypto/asn1/asn1_locl.h b/src/lib/libcrypto/asn1/asn1_locl.h
index 9fcf0d9530..2c6087bf02 100644
--- a/src/lib/libcrypto/asn1/asn1_locl.h
+++ b/src/lib/libcrypto/asn1/asn1_locl.h
@@ -143,3 +143,14 @@ struct x509_crl_method_st
                                 ASN1_INTEGER *ser, X509_NAME *issuer);
         int (*crl_verify)(X509_CRL *crl, EVP_PKEY *pk);
         };
+
+/*
+ * Unicode codepoint constants
+ */
+#define UNICODE_MAX             0x10FFFF
+#define UNICODE_SURROGATE_MIN   0x00D800
+#define UNICODE_SURROGATE_MAX   0x00DFFF
+
+#define UNICODE_IS_SURROGATE(x) \
+        ((x) >= UNICODE_SURROGATE_MIN && (x) <= UNICODE_SURROGATE_MAX)
+